JP2005225736A - Rotary kiln and method for treating flammable waste using the same - Google Patents

Rotary kiln and method for treating flammable waste using the same Download PDF

Info

Publication number
JP2005225736A
JP2005225736A JP2004037953A JP2004037953A JP2005225736A JP 2005225736 A JP2005225736 A JP 2005225736A JP 2004037953 A JP2004037953 A JP 2004037953A JP 2004037953 A JP2004037953 A JP 2004037953A JP 2005225736 A JP2005225736 A JP 2005225736A
Authority
JP
Japan
Prior art keywords
combustible waste
main fuel
rotary kiln
waste
burner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2004037953A
Other languages
Japanese (ja)
Other versions
JP4947249B2 (en
Inventor
Naoyuki Shimoda
直之 下田
Hisanobu Tanaka
久順 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP2004037953A priority Critical patent/JP4947249B2/en
Publication of JP2005225736A publication Critical patent/JP2005225736A/en
Application granted granted Critical
Publication of JP4947249B2 publication Critical patent/JP4947249B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y02P40/125—Fuels from renewable energy sources, e.g. waste or biomass

Landscapes

  • Gasification And Melting Of Waste (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

【課題】投入した可燃性廃棄物を効率良く燃焼させる。
【解決手段】主燃料バーナ１０及び可燃性廃棄物燃焼バーナ１１を備えたセメントクリンカ製造用のロータリーキルン１において、可燃性廃棄物燃焼バーナ１１を主燃料バーナ１０の下側に配置し、この可燃性廃棄物燃焼バーナ１１による可燃性廃棄物Ｓの吹出方向を、主燃料バーナ１１の胴部、または、主燃料バーナ１１の火炎Ｆに向かうように傾け、可燃性廃棄物の投入箇所を、主燃料バーナの先端１０ａから前方に１ｍ、後方に２ｍの範囲に設定した。
【選択図】図１An object of the present invention is to efficiently burn combustible waste that has been input.
In a rotary kiln (1) for producing cement clinker having a main fuel burner (10) and a combustible waste combustion burner (11), a combustible waste combustion burner (11) is disposed below the main fuel burner (10), and the combustibility is increased. The direction in which the combustible waste S is blown out by the waste combustion burner 11 is tilted toward the trunk of the main fuel burner 11 or the flame F of the main fuel burner 11, and the injection point of the combustible waste is changed to the main fuel. The range was set to 1 m forward and 2 m backward from the tip 10 a of the burner.
[Selection] Figure 1

Description

本発明は、廃プラスチック等の可燃性廃棄物を補助燃料として用いるロータリーキルン及びこれを用いた可燃性廃棄物の処理方法に関するものである。   The present invention relates to a rotary kiln using flammable waste such as waste plastic as an auxiliary fuel and a method for treating flammable waste using the rotary kiln.

産業廃棄物の発生量は年々増加の一途をたどっている。その処理方法としては埋め立て処理、焼却処理等が知られている。しかし、埋め立て場の確保が難しくなってきていることから、焼却処理が注目を浴びてきている。かかる産業廃棄物の中でも廃プラスチックやごみ固体化燃料（ＲＤＦ）等の可燃性廃棄物は、焼却によって大きな熱量を発生するため、その燃焼によって生じる熱量を有効に利用すべく、各種の燃焼炉の燃料として利用されつつある。   The amount of industrial waste generated has been increasing year by year. As the processing method, landfill processing, incineration processing and the like are known. However, incineration has attracted attention because it has become difficult to secure a landfill. Among such industrial wastes, combustible wastes such as waste plastics and solid waste fuel (RDF) generate a large amount of heat by incineration. Therefore, in order to effectively use the amount of heat generated by the combustion, various combustion furnaces It is being used as fuel.

例えば、廃プラスチック等の可燃性廃棄物を燃料として利用する方法として、その破砕品をセメント焼成設備のロータリーキルンの窯前部からロータリーキルン内に空気流に乗せて吹き込んで燃焼させ、主燃料として使用する微粉炭の使用量を削減する技術が以前より知られている。   For example, as a method of using flammable waste such as waste plastic as fuel, the crushed product is blown into an air flow from the front of the kiln of the rotary kiln of the cement firing equipment and burned to be used as the main fuel. Techniques for reducing the amount of pulverized coal used have been known for some time.

特許文献１には、主燃料バーナの上側に可燃性廃棄物燃焼バーナを設けて、可燃性廃棄物を主燃料による火炎中に落下するように投入することにより、ロータリーキルン壁への着地前に空間燃焼を完了させるロータリーキルンが開示されている。また、特許文献２には、キルンの中心から降ろした鉛直線から回転方向に１１０度の範囲に可燃性廃棄物燃焼バーナを設け、可燃性廃棄物をクリンカ上に降下するように投入して、クリンカからの高熱と酸素の多い二次空気により、可燃性廃棄物を効率良く燃焼させる技術が開示されている。   In Patent Document 1, a combustible waste combustion burner is provided on the upper side of the main fuel burner, and the combustible waste is thrown into the flame of the main fuel so as to be dropped before landing on the rotary kiln wall. A rotary kiln that completes combustion is disclosed. In addition, in Patent Document 2, a combustible waste combustion burner is provided in the range of 110 degrees in the rotational direction from the vertical line lowered from the center of the kiln, and the combustible waste is thrown down onto the clinker, A technique for efficiently combusting flammable waste by high heat from clinker and secondary air rich in oxygen is disclosed.

特開２０００−３１９０４９号公報JP 2000-319049 A 特開２００３−１０６７７１号公報JP 2003-106791 A

ところが、上記従来技術においては、投入した可燃性廃棄物の拡散の度合いが低いために、必ずしも可燃性廃棄物を効率良く燃焼させることができないという問題があった。   However, in the above-described conventional technology, there is a problem that the combustible waste cannot be efficiently burned because the degree of diffusion of the combustible waste that has been input is low.

本発明は、上記事情を考慮し、投入した可燃性廃棄物を効率良く燃焼させることのできるロータリーキルンおよびこれを用いた可燃性廃棄物の処理方法を提供することを目的としている。   In view of the above circumstances, an object of the present invention is to provide a rotary kiln capable of efficiently burning combustible waste that has been input and a method for treating combustible waste using the rotary kiln.

請求項１の発明のロータリーキルンは、主燃料バーナ及び可燃性廃棄物燃焼バーナを備えたセメントクリンカ製造用のロータリーキルンにおいて、前記可燃性廃棄物燃焼バーナを主燃料バーナの下側に配置し、この可燃性廃棄物燃焼バーナによる可燃性廃棄物の吹出方向を、主燃料バーナの胴部、または、主燃料バーナの火炎に向かうように傾けたことを特徴とする。   The rotary kiln of the invention of claim 1 is a rotary kiln for producing a cement clinker equipped with a main fuel burner and a combustible waste combustion burner, and the combustible waste combustion burner is disposed below the main fuel burner. The direction in which the combustible waste is blown out by the combustible waste combustion burner is tilted toward the trunk of the main fuel burner or the flame of the main fuel burner.

請求項２の発明のロータリーキルンは、請求項１において、前記可燃性廃棄物燃焼バーナを、キルンの回転中心から下ろした鉛直線から、回転方向あるいはその逆方向に８０度の範囲に設けたことを特徴とする。   A rotary kiln according to a second aspect of the present invention is the rotary kiln according to the first aspect, wherein the combustible waste combustion burner is provided within a range of 80 degrees in the rotational direction or the opposite direction from the vertical line drawn from the rotational center of the kiln. Features.

請求項３の発明の可燃性廃棄物の処理方法は、セメントクリンカ製造用のロータリーキルン内を加熱するために、主燃料バーナに加えて設けられた可燃性廃棄物燃焼バーナによる可燃性廃棄物の処理方法において、前記可燃性廃棄物燃焼バーナから、主燃料バーナの胴部または主燃料バーナの火炎に向けて可燃性廃棄物を投入することを特徴とする。   According to a third aspect of the present invention, there is provided a method for treating flammable waste, comprising: a flammable waste combustion burner provided in addition to a main fuel burner for heating a rotary kiln for producing cement clinker. In the method, the combustible waste is injected from the combustible waste combustion burner toward the trunk of the main fuel burner or the flame of the main fuel burner.

請求項４の発明の可燃性廃棄物の処理方法は、請求項３において、前記可燃性廃棄物の投入箇所を、主燃料バーナの先端から前方に１ｍ、後方に２ｍの範囲に設定したことを特徴とする。   The method for treating flammable waste according to claim 4 is the method according to claim 3, wherein the place where the flammable waste is introduced is set in a range of 1 m forward from the tip of the main fuel burner and 2 m backward. Features.

請求項５の発明の可燃性廃棄物の処理方法は、請求項３または４において、前記可燃性廃棄物として廃プラスチックを投入する場合は、主燃料バーナの火炎に向けて投入することを特徴とする。   The method for treating combustible waste according to claim 5 is characterized in that, in claim 3 or 4, when waste plastic is introduced as the combustible waste, it is introduced toward the flame of the main fuel burner. To do.

請求項６の発明の可燃性廃棄物の処理方法は、請求項３または４において、前記可燃性廃棄物として、木屑、肉骨粉、魚粉の少なくともいずれかを投入する場合は、主燃料バーナの胴部にぶつかるように投入することを特徴とする。   The method for treating flammable waste according to the invention of claim 6 is the body of the main fuel burner according to claim 3 or 4, wherein at least one of wood chips, meat-and-bone meal and fish meal is used as the flammable waste. It is characterized by being thrown in so as to hit the part.

請求項７の発明の可燃性廃棄物の処理方法は、請求項３〜６のいずれかにおいて、前記可燃性廃棄物の投入量を、熱量換算で、セメント製造に用いられる燃料全体の熱量に対して１％以上５０％以下とすることを特徴とする。   The method for treating flammable waste according to claim 7 is the method according to any one of claims 3 to 6, wherein the input amount of the flammable waste is calculated in terms of calorie, with respect to the calorie of the whole fuel used for cement production. 1% or more and 50% or less.

請求項８の発明の可燃性廃棄物の処理方法は、請求項３〜７のいずれかにおいて、前記可燃性廃棄物の粒径を５０ｍｍ以下に調整した上で投入することを特徴とする。   The method for treating flammable waste according to claim 8 is characterized in that in any one of claims 3 to 7, the flammable waste is charged after the particle size of the combustible waste is adjusted to 50 mm or less.

本発明によれば、可燃性廃棄物を広く拡散させながらクリンカ上に降下させることができる。つまり、主燃料バーナの胴部に可燃性廃棄物をぶつけたり、主燃料バーナの火炎に向けて可燃性廃棄物を吹き出したりすることにより、可燃性廃棄物を広く散らばらせながら、高温のクリンカ上に降下させることができ、燃焼効率を高めることができる。特に可燃性廃棄物の高温燃焼作用によってフリーライムを下げることができるため、最終的に強度の高いセメントを得ることができ、多量の可燃性廃棄物を投入しても、セメントの品質を低下させることがなくなる。また、可燃性廃棄物の焼却灰はセメントの製造原料の一部として有効に利用できる。   According to the present invention, combustible waste can be lowered onto the clinker while widely diffusing. In other words, by burning flammable waste against the body of the main fuel burner or blowing out flammable waste toward the flame of the main fuel burner, It can be lowered and combustion efficiency can be increased. In particular, because high-temperature combustion action of combustible waste can reduce free lime, it is possible to finally obtain a high-strength cement, and even if a large amount of combustible waste is added, the quality of the cement is lowered. Nothing will happen. Incinerated ash of combustible waste can be effectively used as part of the raw material for producing cement.

以下、本発明の実施形態を図面に基づいて説明する。図１は本発明のロータリーキルンの概略構成図、図２は図１のＩＩ−ＩＩ線に沿う断面図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a rotary kiln of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II in FIG.

図１において、被焼成物であるセメント原料は、ロータリーキルン１内の上流端である窯尻部側（図中左側）から投入され、ロータリーキルン１内を矢印Ｙのように、下流側である窯前部１Ａ側（図中右側）に移動しながら焼成され、焼成されたセメントクリンカＣは、窯前部１Ａの下部に接続されたクリンカクーラー２に落ちて、さらに下流側に移動しながら二次空気Ｄによって冷却される。この二次空気Ｄは、クリンカクーラー２においてセメントクリンカＣから熱を吸収して高温になると共に、窯前部１Ａを通ってロータリーキルン１内を上流側に流れる。   In FIG. 1, a cement raw material to be fired is charged from the kiln bottom side (left side in the figure) which is the upstream end in the rotary kiln 1, and the rotary kiln 1 is in front of the kiln which is downstream as indicated by an arrow Y. The cement clinker C fired while moving to the part 1A side (right side in the figure) falls to the clinker cooler 2 connected to the lower part of the kiln front part 1A, and further moves to the downstream side while moving to the secondary air. Cooled by D. The secondary air D absorbs heat from the cement clinker C in the clinker cooler 2 and becomes high temperature, and flows upstream in the rotary kiln 1 through the kiln front part 1A.

ロータリーキルン１の下流端である窯前部１Ａの端壁１Ａａには、主燃料である微粉炭ＴをブロワーＢ１から供給される一次空気と共にロータリーキルン１内に吹き込む円筒形状の主燃料バーナ１０が設けられている。この主燃料バーナ１０は、主燃料である微粉炭Ｔを一次空気と共に、窯前部１Ａから窯尻部の方向に向かって吹き出して、微粉炭Ｔを燃焼させるものである。さらに、主燃料バーナ１０は、図２に示すように、窯前部１Ａの端壁１Ａａにおけるロータリーキルン１の回転中心に対応する位置に配置されており、微粉炭Ｔを該ロータリーキルン１の回転中心軸に沿って吹き出すようになっている。   A cylindrical main fuel burner 10 for blowing pulverized coal T, which is the main fuel, into the rotary kiln 1 together with the primary air supplied from the blower B1 is provided on the end wall 1Aa of the kiln front portion 1A, which is the downstream end of the rotary kiln 1. ing. The main fuel burner 10 blows out the pulverized coal T, which is the main fuel, together with primary air from the kiln front portion 1A toward the kiln bottom, and burns the pulverized coal T. Further, as shown in FIG. 2, the main fuel burner 10 is disposed at a position corresponding to the rotation center of the rotary kiln 1 on the end wall 1 </ b> Aa of the kiln front portion 1 </ b> A. It comes to blow out along.

また、窯前部１Ａの端壁１Ａａには、図１に示すように、廃プラスチックやごみ固体化燃料（ＲＤＦ）等の可燃性廃棄物Ｓの破砕品を補助燃料用のブロワーＢ２から供給される補助一次空気と共にロータリーキルン１内に吹き込む円筒形状の可燃性廃棄物燃焼バーナ１１が、主燃料バーナ１０の下側に位置させて配置されている。この場合、可燃性廃棄物燃焼バーナ１１は、可燃性廃棄物Ｓの吹出方向が、主燃料バーナ１０の胴部、または、主燃料バーナ１０の前方に形成される火炎Ｆを指向するように傾けて設置されている。また、可燃性廃棄物燃焼バーナ１１は、図２に示すように、キルンの回転中心から下ろした鉛直線から、回転方向（矢印Ｘ方向）あるいはその逆方向に８０度の範囲（角度α１、α２の範囲）に設けられている。   Further, as shown in FIG. 1, a crushed product of combustible waste S such as waste plastic and waste solidified fuel (RDF) is supplied to the end wall 1Aa of the front part 1A of the kiln from a blower B2 for auxiliary fuel. A cylindrical flammable waste combustion burner 11 that is blown into the rotary kiln 1 together with auxiliary primary air is disposed below the main fuel burner 10. In this case, the combustible waste combustion burner 11 is tilted so that the blowing direction of the combustible waste S is directed to the flame F formed in the trunk of the main fuel burner 10 or in front of the main fuel burner 10. Installed. Further, as shown in FIG. 2, the combustible waste combustion burner 11 has a range of 80 degrees (angles α1, α2) in the rotational direction (arrow X direction) or the opposite direction from the vertical line drawn from the rotation center of the kiln. Range).

ここで、可燃性廃棄物燃焼バーナ１１による可燃性廃棄物Ｓの投入箇所は、主燃料バーナ１０の先端１０ａから前方に１ｍ、後方に２ｍの範囲に設定されている。例えば、可燃性廃棄物Ｓとして廃プラスチック等の高温で軟化するものを投入する場合には、主燃料バーナ１０の先端１０ａから前方に１ｍ以内の火炎Ｆに向けて当該火炎Ｆにぶつかるように可燃性廃棄物Ｓを投入すべく、可燃性廃棄物燃焼バーナ１１の吹出角度（傾角）が設定されている。また、可燃性廃棄物Ｓとして木屑、肉骨粉、魚粉の少なくともいずれか（木屑、肉骨粉、魚粉のうち１種以上）を投入する場合には、主燃料バーナ１１の胴部に向けて当該胴部にぶつかるように可燃性廃棄物Ｓを投入すべく、可燃性廃棄物燃焼バーナ１１の吹出角度（傾角）が設定されている。   Here, the place where the combustible waste S is charged by the combustible waste combustion burner 11 is set in a range of 1 m forward from the tip 10 a of the main fuel burner 10 and 2 m rearward. For example, when a combustible waste S that is softened at a high temperature such as waste plastic is introduced, it is combustible so as to hit the flame F toward the flame F within 1 m from the front end 10a of the main fuel burner 10. The blowing angle (tilt angle) of the combustible waste combustion burner 11 is set in order to introduce the waste S. When at least one of wood chips, meat and bone meal, and fish meal (one or more kinds of wood chips, meat and bone meal, and fish meal) is input as the combustible waste S, the body is directed toward the body of the main fuel burner 11. The blowing angle (tilt angle) of the combustible waste combustion burner 11 is set so that the combustible waste S can be introduced so as to hit the part.

次に、本発明の可燃性廃棄物の処理方法を上記ロータリーキルン１の作用効果と共に説明する。
セメントクリンカＣを製造するに当たり、主燃料用のブロワーＢ１から供給した一次空気を、微粉炭Ｔと共に主燃料バーナ１０から吹き出して燃焼させる。同時に、補助燃料用のブロワーＢ２から供給される補助一次空気を、例えば、廃プラスチックを細かく砕いた可燃性廃棄物Ｓと共に可燃性廃棄物燃焼バーナ１１から吹き出して燃焼させる。 Next, the processing method of the combustible waste of this invention is demonstrated with the effect of the said rotary kiln 1. FIG.
In manufacturing the cement clinker C, the primary air supplied from the blower B1 for main fuel is blown out from the main fuel burner 10 together with the pulverized coal T and burned. At the same time, the auxiliary primary air supplied from the auxiliary fuel blower B2 is blown out from the combustible waste combustion burner 11 together with the combustible waste S obtained by finely pulverizing the waste plastic, for example.

そのように可燃性廃棄物Ｓを投入した場合、可燃性廃棄物Ｓは、主燃料バーナ１０の火炎Ｆからの輻射熱や、高温のセメントクリンカＣからの輻射熱や、クリンカクーラー２においてセメントクリンカＣから熱を吸収して高温となった二次空気Ｄからの熱や、その他からの熱を受けて高温となり、該二次空気Ｄの高温雰囲気中で燃焼を開始することになる。   When the combustible waste S is introduced in such a manner, the combustible waste S is generated from the radiant heat from the flame F of the main fuel burner 10, the radiant heat from the high-temperature cement clinker C, or from the cement clinker C in the clinker cooler 2. The heat from the secondary air D that has absorbed the heat and becomes high due to the heat from the secondary air D and the heat from others, and combustion starts in the high temperature atmosphere of the secondary air D.

その際、可燃性廃棄物Ｓを広く拡散させながら、セメントクリンカＣ上に降下させることができる。つまり、主燃料バーナ１０の胴部に向けて当該胴部に可燃性廃棄物Ｓを当てるべく可燃性廃棄物Ｓを吹き出したり、主燃料バーナ１０の火炎Ｆに向けて当該火炎Ｆに当てるべく可燃性廃棄物Ｓを吹き出したりすることにより、可燃性廃棄物Ｓが広く散らばりながら、火炎Ｆ等から効率よく熱を受けて燃焼すると共に高温のクリンカＣ上に降下させることができる。   At that time, the combustible waste S can be lowered onto the cement clinker C while being widely diffused. That is, the combustible waste S is blown out toward the trunk portion of the main fuel burner 10 so as to apply the combustible waste S to the trunk portion, or the combustible waste is applied toward the flame F toward the flame F of the main fuel burner 10. When the combustible waste S is blown out, the combustible waste S is scattered widely and can be burned by receiving heat efficiently from the flame F or the like and lowered onto the high-temperature clinker C.

ここで、ロータリーキルン１内では、セメントクリンカＣが周方向に回転しながら掻き上げられてはその上端部から崩れ落ちることを繰り返す状態になっている。このため、可燃性廃棄物燃焼バーナ１１から吹き出し後、完全に燃焼するに至らなかった可燃性廃棄物Ｓは、掻き上げられてはその上端部から崩れ落ちる約１４００℃のセメントクリンカＣ上等に分散して降下し、セメントクリンカＣから極めて効率良く熱を受けると共に、ロータリーキルン１内に供給される二次空気とも極めて効率よく混合されることになる。従って、可燃性廃棄物Ｓを極めて効率よく燃焼させることができる。また、この燃焼効率の向上による高温の作用によってフリーライムが下がるため、最終的に強度の高いセメントを得ることができる。また、可燃性廃棄物Ｓの焼却灰は、セメントの製造のために必要な原料の一部として有効利用される。   Here, in the rotary kiln 1, the cement clinker C is repeatedly scraped off from the upper end portion of the cement clinker C while being rotated in the circumferential direction. For this reason, the combustible waste S that has not been completely combusted after being blown out from the combustible waste combustion burner 11 is dispersed on the cement clinker C having a temperature of about 1400 ° C. that falls down from the upper end of the combustible waste S. As a result, the heat is received from the cement clinker C very efficiently, and the secondary air supplied into the rotary kiln 1 is also mixed very efficiently. Therefore, the combustible waste S can be burned extremely efficiently. Moreover, since the free lime is lowered by the action of high temperature due to the improvement of the combustion efficiency, a cement with high strength can be finally obtained. Further, the incinerated ash of the combustible waste S is effectively used as a part of the raw material necessary for manufacturing cement.

なお、可燃性廃棄物Ｓの投入量を、熱量換算で、セメント製造に用いられる燃料全体の熱量に対して１％以上５０％以下とするのが望ましい。そうすることで、セメントの品質を低下させるおそれがなくなるからである。好ましくは、３０％以下とするのがよい。また、可燃性廃棄物Ｓは、粒径を５０ｍｍ以下に調整した上で投入するのがよい。   In addition, it is desirable that the input amount of the combustible waste S is 1% or more and 50% or less with respect to the heat amount of the whole fuel used for cement production in terms of heat amount. By doing so, there is no risk of lowering the quality of the cement. Preferably, it should be 30% or less. In addition, the combustible waste S is preferably introduced after the particle size is adjusted to 50 mm or less.

実施例１では、可燃性廃棄物Ｓの投入点（主燃料バーナの先端１０ａからの距離）を変化させた場合のセメントクリンカ中のフリーライム（ｆ.ＣａＯ）の発生率について調べた。その結果を表１に示す。投入条件として、可燃性廃棄物である木材チップ（粒径０〜５０ｍｍ）を、図２の３番の箇所の可燃性廃棄物燃焼バーナ１１から投入した。投入量は１２．５kg/t-cli（クリンカ１トン当たりの可燃性廃棄物の投入重量をｋｇで示した単位）である。ｆ.ＣａＯが多いということは、燃焼効率が悪いことを意味すると共に、セメントの製品としても不適切なものとなる。特に、ｆ.ＣａＯが１．０％以上の場合は製品にできない。そこで、投入可能なポイントは、主燃料バーナ１０の先端１０ａから前方へ１．０ｍ、後方へ２．０ｍの範囲がよいことが分かった。   In Example 1, the occurrence rate of free lime (f.CaO) in the cement clinker when the input point of the combustible waste S (distance from the tip 10a of the main fuel burner) was changed was examined. The results are shown in Table 1. As input conditions, wood chips (particle size 0 to 50 mm), which is combustible waste, were input from the combustible waste combustion burner 11 at the third position in FIG. The input amount is 12.5 kg / t-cli (unit of indicating the input weight of combustible waste per ton of clinker in kg). f. A large amount of CaO means that the combustion efficiency is low, and it is inappropriate as a cement product. In particular, when f.CaO is 1.0% or more, it cannot be made into a product. Thus, it has been found that the points that can be charged are preferably 1.0 m forward and 2.0 m backward from the tip 10 a of the main fuel burner 10.

Figure 2005225736
Figure 2005225736

実施例２では、可燃性廃棄物Ｓとしてプラスチックを投入した場合の、可燃性廃棄物Ｓの投入点（主燃料バーナの先端１０ａからの距離）と、セメントクリンカ中のフリーライム（ｆ.ＣａＯ）の発生率との関係について調べた。その結果を表２に示す。投入条件として、可燃性廃棄物であるプラスチック（粒径０〜２０ｍｍ）を、図２の３番の箇所の可燃性廃棄物燃焼バーナ１１から投入した。投入量は１２．５kg/t-cliである。ｆ.ＣａＯが多いということは、燃焼効率が悪いということであり、１．０％以上は製品にできない。そこで、プラスチックを投入する場合の投入可能なポイントは、主燃料バーナ１０の先端１０ａから前方へ１．０ｍの範囲がよいことが分かった。   In Example 2, when plastic is used as the combustible waste S, the input point of the combustible waste S (distance from the tip 10a of the main fuel burner) and the free lime (f.CaO) in the cement clinker We investigated the relationship with the incidence. The results are shown in Table 2. As an input condition, a combustible waste plastic (particle size: 0 to 20 mm) was supplied from the combustible waste combustion burner 11 at the number 3 position in FIG. The input is 12.5 kg / t-cli. f. A large amount of CaO means that the combustion efficiency is poor, and 1.0% or more cannot be made into a product. Thus, it has been found that the point where the plastic can be charged is preferably within a range of 1.0 m forward from the tip 10a of the main fuel burner 10.

Figure 2005225736
Figure 2005225736

実施例３では、可燃性廃棄物燃焼バーナ１１の位置と、セメントクリンカ中のフリーライム（ｆ.ＣａＯ）の発生率との関係について調べた。その結果を表３に示す。投入条件として、可燃性廃棄物である木材チップ（粒径０．１〜５０ｍｍ）を、図２の１〜１２番の各箇所の可燃性廃棄物燃焼バーナ１１から、主燃料バーナ１０の先端１０ａから後方１．０ｍのポイントを狙って投入した。投入量は１２．５kg/t-cliである。ｆ.ＣａＯが多いということは、燃焼効率が悪いということであり、１．０％以上は製品にできない。そこで、可燃性廃棄物燃焼バーナ１１を設ける位置は、１〜６番が最適であり、７〜１２番は不適切であることが分かった。つまり、キルンの中心から降ろした鉛直線から回転方向あるいはその逆方向に８０度の範囲に可燃性廃棄物燃焼バーナ１１を設けるのがよいことが分かった。   In Example 3, the relationship between the position of the combustible waste combustion burner 11 and the generation rate of free lime (f.CaO) in the cement clinker was examined. The results are shown in Table 3. As input conditions, wood chips (particle size 0.1 to 50 mm), which are combustible waste, are transferred from the combustible waste combustion burner 11 in each of Nos. 1 to 12 in FIG. 2 to the tip 10a of the main fuel burner 10. I aimed at the point 1.0m behind. The input is 12.5 kg / t-cli. f. A large amount of CaO means that the combustion efficiency is poor, and 1.0% or more cannot be made into a product. Therefore, it has been found that the position where the combustible waste combustion burner 11 is provided is optimally numbered 1-6, and numbered 7-12 is inappropriate. That is, it has been found that the combustible waste combustion burner 11 should be provided in the range of 80 degrees in the rotational direction or the opposite direction from the vertical line drawn down from the center of the kiln.

Figure 2005225736
Figure 2005225736

実施例４では、クリンカ製造に関わる熱量全体に対する、副バーナ（可燃性廃棄物燃焼バーナ１１）からの投入可燃性廃棄物の熱量割合と、セメントクリンカ中のフリーライム（ｆ.ＣａＯ）の発生率との関係について調べた。その結果を表４に示す。投入条件として、可燃性廃棄物である木材チップ（粒径０〜５０ｍｍ）を、図２の３番の可燃性廃棄物燃焼バーナ１１から、主燃料バーナ１０の先端１０ａの後方１．０ｍのポイントを狙って投入した。ｆ.ＣａＯが多いということは、燃焼効率が悪いということであり、１．０％以上は製品にできない。そこで、可燃性廃棄物の投入量は、熱量換算で、セメント製造に用いられる燃料全体の熱量に対して１％以上５０％以下とするのがよく、特に３０％以下とするのがよいことが分かった。   In Example 4, the calorific proportion of the combustible waste introduced from the secondary burner (combustible waste combustion burner 11) with respect to the total calorific value related to clinker production, and the generation rate of free lime (f.CaO) in the cement clinker We investigated the relationship with. The results are shown in Table 4. As a charging condition, a wood chip (particle size of 0 to 50 mm), which is combustible waste, is pointed 1.0 m behind the tip 10a of the main fuel burner 10 from the third combustible waste combustion burner 11 in FIG. It was introduced aiming at. f. A large amount of CaO means that the combustion efficiency is poor, and 1.0% or more cannot be made into a product. Therefore, the amount of combustible waste input is preferably 1% or more and 50% or less, and particularly preferably 30% or less, in terms of calorie, with respect to the calorie of the entire fuel used for cement production. I understood.

Figure 2005225736
Figure 2005225736

実施例５では、投入する可燃性廃棄物Ｓの粒径を変化させた場合の、セメントクリンカ中のフリーライム（ｆ.ＣａＯ）の発生率について調べた。その結果を表５に示す。投入条件として、可燃性廃棄物である木材チップを粒径を段階的に異ならせて、図２の３番の可燃性廃棄物燃焼バーナ１１から、主燃料バーナ１０の先端１０ａの後方１．０ｍのポイントを狙って投入した。ｆ.ＣａＯが多いということは、燃焼効率が悪いということであり、１．０％以上は製品にできない。そこで、投入する可燃性廃棄物の粒径は、５０ｍｍ以下とするのがよいことが分かった。なお、プラスチックや木材等の可燃性廃棄物を破砕する破砕装置の性能上、投入する可燃性廃棄物の粒径は、ほぼ０．１ｍｍ以上となる。   In Example 5, the occurrence rate of free lime (f.CaO) in the cement clinker when the particle size of the combustible waste S to be input was changed was examined. The results are shown in Table 5. As an input condition, the wood chip, which is a combustible waste, is gradually changed in particle size, and from the third combustible waste combustion burner 11 of FIG. 2 to 1.0 m behind the tip 10a of the main fuel burner 10 It was introduced aiming at. f. A large amount of CaO means that the combustion efficiency is poor, and 1.0% or more cannot be made into a product. Therefore, it was found that the particle size of the combustible waste to be introduced should be 50 mm or less. In addition, the particle size of the combustible waste to be charged is approximately 0.1 mm or more in view of the performance of the crushing apparatus for crushing combustible waste such as plastic and wood.

Figure 2005225736
Figure 2005225736

本発明の実施形態のロータリーキルンの概略構成図である。It is a schematic block diagram of the rotary kiln of embodiment of this invention. 図１のＩＩ−ＩＩ線に沿う断面図である。It is sectional drawing which follows the II-II line | wire of FIG.

符号の説明Explanation of symbols

１ ロータリーキルン
１０ 主燃料バーナ
１１ 可燃性廃棄物燃焼バーナ
Ｓ 可燃性廃棄物
Ｆ 火炎 1 Rotary Kiln 10 Main Fuel Burner 11 Combustible Waste Combustion Burner S Combustible Waste F Flame

Claims (8)

主燃料バーナ及び可燃性廃棄物燃焼バーナを備えたセメントクリンカ製造用のロータリーキルンにおいて、前記可燃性廃棄物燃焼バーナを主燃料バーナの下側に配置し、この可燃性廃棄物燃焼バーナによる可燃性廃棄物の吹出方向を、主燃料バーナの胴部、または、主燃料バーナの火炎に向かうように傾けたことを特徴とするロータリーキルン。   In a rotary kiln for producing a cement clinker equipped with a main fuel burner and a combustible waste combustion burner, the combustible waste combustion burner is disposed under the main fuel burner, and combustible waste is produced by the combustible waste combustion burner. A rotary kiln characterized by tilting the blowing direction of the object toward the trunk of the main fuel burner or the flame of the main fuel burner. 前記可燃性廃棄物燃焼バーナを、キルンの回転中心から下ろした鉛直線から、回転方向あるいはその逆方向に８０度の範囲に設けたことを特徴とする請求項１に記載のロータリーキルン。   2. The rotary kiln according to claim 1, wherein the combustible waste combustion burner is provided in a range of 80 degrees in a rotation direction or the opposite direction from a vertical line drawn from the rotation center of the kiln. セメントクリンカ製造用のロータリーキルン内を加熱するために、主燃料バーナに加えて設けられた可燃性廃棄物燃焼バーナによる可燃性廃棄物の処理方法において、前記可燃性廃棄物燃焼バーナから、主燃料バーナの胴部または主燃料バーナの火炎に向けて可燃性廃棄物を投入することを特徴とするロータリーキルンを用いた可燃性廃棄物の処理方法。   In the method for treating combustible waste by a combustible waste combustion burner provided in addition to the main fuel burner for heating the inside of the rotary kiln for producing cement clinker, the main fuel burner A combustible waste treatment method using a rotary kiln, characterized in that combustible waste is charged toward the flame of the main body or the main fuel burner. 前記可燃性廃棄物の投入箇所を、主燃料バーナの先端から前方に１ｍ、後方に２ｍの範囲に設定したことを特徴とする請求項３記載のロータリーキルンを用いた可燃性廃棄物の処理方法。   4. The method for treating combustible waste using a rotary kiln according to claim 3, wherein the place where the combustible waste is charged is set to a range of 1 m forward and 2 m rearward from the tip of the main fuel burner. 前記可燃性廃棄物として廃プラスチックを投入する場合は、主燃料バーナの火炎に向けて投入することを特徴とする請求項３または４に記載のロータリーキルンを用いた可燃性廃棄物の処理方法。   5. The method for treating combustible waste using a rotary kiln according to claim 3, wherein when the waste plastic is introduced as the combustible waste, it is introduced toward the flame of the main fuel burner. 前記可燃性廃棄物として、木屑、肉骨粉、魚粉の少なくともいずれかを投入する場合は、主燃料バーナの胴部にぶつかるように投入することを特徴とする請求項３または４に記載のロータリーキルンを用いた可燃性廃棄物の処理方法。   5. The rotary kiln according to claim 3, wherein at least one of wood chips, meat-and-bone meal, and fish meal is introduced as the combustible waste so as to hit the trunk of the main fuel burner. Used flammable waste treatment method. 前記可燃性廃棄物の投入量を、熱量換算で、セメント製造に用いられる燃料全体の熱量に対して１％以上５０％以下とすることを特徴とする請求項３〜６のいずれかに記載のロータリーキルンを用いた可燃性廃棄物の処理方法。   The input amount of the combustible waste is 1% or more and 50% or less with respect to the heat amount of the whole fuel used for cement production, in terms of heat amount. A method for treating flammable waste using a rotary kiln. 前記可燃性廃棄物の粒径を５０ｍｍ以下に調整した上で投入することを特徴とするロータリーキルンを用いた可燃性廃棄物の処理方法。   A method for treating flammable waste using a rotary kiln, wherein the particle size of the flammable waste is adjusted to 50 mm or less and then charged.
JP2004037953A 2004-02-16 2004-02-16 Method for treating combustible waste using a rotary kiln Expired - Fee Related JP4947249B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004037953A JP4947249B2 (en) 2004-02-16 2004-02-16 Method for treating combustible waste using a rotary kiln

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004037953A JP4947249B2 (en) 2004-02-16 2004-02-16 Method for treating combustible waste using a rotary kiln

Publications (2)

Publication Number Publication Date
JP2005225736A true JP2005225736A (en) 2005-08-25
JP4947249B2 JP4947249B2 (en) 2012-06-06

Family

ID=35000743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004037953A Expired - Fee Related JP4947249B2 (en) 2004-02-16 2004-02-16 Method for treating combustible waste using a rotary kiln

Country Status (1)

Country Link
JP (1) JP4947249B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008050678A1 (en) * 2006-10-24 2008-05-02 Taiheiyo Cement Corporation Method for removing lead from cement kiln
JP2009165919A (en) * 2008-01-11 2009-07-30 Taiheiyo Cement Corp Processing system for combustible waste containing metals and chlorine
JP2023083939A (en) * 2021-12-06 2023-06-16 太平洋セメント株式会社 Combustible waste injection device and its operation method

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5181824A (en) * 1975-01-14 1976-07-17 Daido Oxygen
JPS5717867B2 (en) * 1972-07-27 1982-04-13
JPH0771728A (en) * 1993-09-03 1995-03-17 Mitsui Eng & Shipbuild Co Ltd Burner
JPH08283053A (en) * 1995-04-14 1996-10-29 Yoshizawa Sekkai Kogyo Kk Combustion method of waste plastic in rotary kiln
JP2000319049A (en) * 1999-04-30 2000-11-21 Taiheiyo Cement Corp Production of cement clinker
JP2001012705A (en) * 1999-06-30 2001-01-19 Sumitomo Osaka Cement Co Ltd Fuel combustor apparatus and combustion method for cement rotary kiln
JP2001064049A (en) * 1999-07-02 2001-03-13 L'air Liquide Combustion process applicable to production of cement
JP2001114539A (en) * 1999-10-18 2001-04-24 Sumitomo Osaka Cement Co Ltd Apparatus for and method of burning fuel for cement rotary kiln
JP2001120950A (en) * 1999-10-25 2001-05-08 Taiheiyo Cement Corp Method for decreasing nitrogen oxide in cement raw material firing device
JP2002029791A (en) * 2000-07-07 2002-01-29 Taiheiyo Cement Corp Firing process of cement clinker raw material
JP2003083519A (en) * 2001-09-10 2003-03-19 Mitsubishi Materials Corp Rotary kiln fuel combustion method and combustion apparatus
JP2003090522A (en) * 2001-09-20 2003-03-28 Mitsubishi Materials Corp Injectable structure of combustible waste into rotary kiln
JP2003106771A (en) * 2001-09-27 2003-04-09 Mitsubishi Materials Corp Rotary kiln and method for treating combustible waste using the same
JP2003106508A (en) * 2001-09-28 2003-04-09 Mitsubishi Materials Corp Injectable structure of combustible waste into rotary kiln
JP2003130549A (en) * 2001-10-29 2003-05-08 Mitsubishi Materials Corp Rotary kiln
JP2003201489A (en) * 2001-11-02 2003-07-18 Maejima Fumio Solid fuel material of powdered flesh and bone and method for producing the same
JP2003201481A (en) * 2002-01-08 2003-07-18 Masayuki Matsui Carbonization furnace
JP2003275607A (en) * 2002-03-22 2003-09-30 Miike Iron Works Co Ltd Crusher

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717867B2 (en) * 1972-07-27 1982-04-13
JPS5181824A (en) * 1975-01-14 1976-07-17 Daido Oxygen
JPH0771728A (en) * 1993-09-03 1995-03-17 Mitsui Eng & Shipbuild Co Ltd Burner
JPH08283053A (en) * 1995-04-14 1996-10-29 Yoshizawa Sekkai Kogyo Kk Combustion method of waste plastic in rotary kiln
JP2000319049A (en) * 1999-04-30 2000-11-21 Taiheiyo Cement Corp Production of cement clinker
JP2001012705A (en) * 1999-06-30 2001-01-19 Sumitomo Osaka Cement Co Ltd Fuel combustor apparatus and combustion method for cement rotary kiln
JP2001064049A (en) * 1999-07-02 2001-03-13 L'air Liquide Combustion process applicable to production of cement
JP2001114539A (en) * 1999-10-18 2001-04-24 Sumitomo Osaka Cement Co Ltd Apparatus for and method of burning fuel for cement rotary kiln
JP2001120950A (en) * 1999-10-25 2001-05-08 Taiheiyo Cement Corp Method for decreasing nitrogen oxide in cement raw material firing device
JP2002029791A (en) * 2000-07-07 2002-01-29 Taiheiyo Cement Corp Firing process of cement clinker raw material
JP2003083519A (en) * 2001-09-10 2003-03-19 Mitsubishi Materials Corp Rotary kiln fuel combustion method and combustion apparatus
JP2003090522A (en) * 2001-09-20 2003-03-28 Mitsubishi Materials Corp Injectable structure of combustible waste into rotary kiln
JP2003106771A (en) * 2001-09-27 2003-04-09 Mitsubishi Materials Corp Rotary kiln and method for treating combustible waste using the same
JP2003106508A (en) * 2001-09-28 2003-04-09 Mitsubishi Materials Corp Injectable structure of combustible waste into rotary kiln
JP2003130549A (en) * 2001-10-29 2003-05-08 Mitsubishi Materials Corp Rotary kiln
JP2003201489A (en) * 2001-11-02 2003-07-18 Maejima Fumio Solid fuel material of powdered flesh and bone and method for producing the same
JP2003201481A (en) * 2002-01-08 2003-07-18 Masayuki Matsui Carbonization furnace
JP2003275607A (en) * 2002-03-22 2003-09-30 Miike Iron Works Co Ltd Crusher

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008050678A1 (en) * 2006-10-24 2008-05-02 Taiheiyo Cement Corporation Method for removing lead from cement kiln
JP5213119B2 (en) * 2006-10-24 2013-06-19 太平洋セメント株式会社 Method for removing lead from cement firing furnace
JP2009165919A (en) * 2008-01-11 2009-07-30 Taiheiyo Cement Corp Processing system for combustible waste containing metals and chlorine
JP2023083939A (en) * 2021-12-06 2023-06-16 太平洋セメント株式会社 Combustible waste injection device and its operation method
JP7795338B2 (en) 2021-12-06 2026-01-07 太平洋セメント株式会社 Method for operating a combustible waste injection device

Also Published As

Publication number Publication date
JP4947249B2 (en) 2012-06-06

Similar Documents

Publication Publication Date Title
US8474387B2 (en) Method and apparatus for incineration of combustible waste
KR100474034B1 (en) Waste Incineration Method and Equipment
CN102588950B (en) Novel high-efficiency vaporizing combustion compound furnace grate device with slag disintegrating function
JP6940289B2 (en) Combustible waste treatment method and treatment equipment
JP5410694B2 (en) Combustible waste treatment equipment
JP3891958B2 (en) Combustion apparatus and method
JP2007078239A (en) Waste gasification melting apparatus melting furnace, and control method and apparatus in the melting furnace
JP2010052991A (en) Method for burning limestone and dolomite using top type burning furnace for lime
CN202546734U (en) Novel high-efficiency vaporizing combustion compounded fire grate device with slag crushing function
JP4947249B2 (en) Method for treating combustible waste using a rotary kiln
CN109539240A (en) A kind of non-forming biomass combustion device
CN1945116B (en) Circulation fixing bed split phase combustion technology
CN103953930A (en) Efficient mobile bed gasifier device with pre-dechlorinating function and dechlorinating method of efficient mobile bed gasifier device
JP2005098676A (en) Tuyere structure of waste melting furnace and blowing method of combustible dust
CN218544459U (en) Be used for cement kiln to deal with spiral staircase stove in coordination
JP2003130549A (en) Rotary kiln
JP4749634B2 (en) Method for treating combustible waste using a rotary kiln
JP2004347271A (en) Combustion device and method
CN216667689U (en) A passageway formula burner for likepowder is useless admittedly dealt with
JP4048945B2 (en) Combustion method of flame retardant fuel in rotary kiln
CN1209573C (en) Garbage incinerator integrating fluidized incineration and moving cold slag into one integral and method
CN208170400U (en) The pre- fluidized drying incineration system of multisection type suitable for waste incineration
JP3959620B2 (en) Combustion method and apparatus for combustible waste in a rotary kiln.
CN2324418Y (en) Small air-cooled solid waste incinerator
JPS6370014A (en) Combustion-melting furnace of cyclone type for sewage sludge

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060331

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20090623

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20090810

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100615

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100730

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110510

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110630

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120208

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120221

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150316

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4947249

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

LAPS Cancellation because of no payment of annual fees