JPH04113103A - Pulverized coal burning burner nozzle - Google Patents

Pulverized coal burning burner nozzle

Info

Publication number
JPH04113103A
JPH04113103A JP23238490A JP23238490A JPH04113103A JP H04113103 A JPH04113103 A JP H04113103A JP 23238490 A JP23238490 A JP 23238490A JP 23238490 A JP23238490 A JP 23238490A JP H04113103 A JPH04113103 A JP H04113103A
Authority
JP
Japan
Prior art keywords
burner nozzle
pulverized coal
wear
nozzle
coating material
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.)
Pending
Application number
JP23238490A
Other languages
Japanese (ja)
Inventor
Masaharu Nakamori
正治 中森
Isamu Kayano
榧野　勇
Takeo Araki
剛夫 荒木
Satoshi Tsuru
鶴　聰
Tamotsu Yoshida
保 吉田
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.)
KORYO ENG KK
Mitsubishi Heavy Industries Ltd
Original Assignee
KORYO ENG KK
Mitsubishi Heavy Industries Ltd
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 KORYO ENG KK, Mitsubishi Heavy Industries Ltd filed Critical KORYO ENG KK
Priority to JP23238490A priority Critical patent/JPH04113103A/en
Publication of JPH04113103A publication Critical patent/JPH04113103A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the wear of a burner nozzle by the pulverized coal by coating its inner face of the nozzle with a wear-resistant material such as 13Cr steel, ceramic, etc. CONSTITUTION:On the inner face, through which the pulverized coal passes, of the tip 2 of the burner nozzle of a boiler that buns pulverized coal a coating material 1 that consists of a highly wear-resistant material is provided. This coating material 1 is formed by the spray coating of a self-fluxing alloy, 13Cr steel, ceramics, etc., by the plating of Ni-P, Ni-P-B, etc., by aluminium diffusion treatment, or by other methods. It is possible to reduce very much the wear at the burner nozzle tip by the pulverized coal that goes through the inside of the burner nozzle tip 2 by this coating material 1. Further, the life of the burner nozzle 4 is prolonged, the frequency of the burner nozzle replacement becomes small, and the cost of its repair is reduced by providing the coating material 1 on the section of the inner face of the burner nozzle 4 other than the nozzle tip 2.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、耐摩耗性を改善した微粉炭焚きバーナノズル
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a pulverized coal-fired burner nozzle with improved wear resistance.

〔従来の技術〕[Conventional technology]

従来微粉炭焚きボイラにおいては、第３図に示すように
、ボイラ本体７に複数のバーナ６が設けられ、各バーナ
６は、第２図に示すように、外筒５内にバーナノズル４
が収容され、ボイラ火炉に向って微粉炭と燃焼空気を噴
出するバーナノズルチップ２が同バーナノズル４の先端
に設けられている。なお、第２図中３はバーナノズルチ
ップの仕切板である。In a conventional pulverized coal-fired boiler, as shown in FIG. 3, a plurality of burners 6 are provided in the boiler body 7, and each burner 6 has a burner nozzle 4 in an outer cylinder 5, as shown in FIG.
A burner nozzle tip 2 is provided at the tip of the burner nozzle 4, which houses the boiler and blows out pulverized coal and combustion air toward the boiler furnace. Note that 3 in FIG. 2 is a partition plate of the burner nozzle tip.

前記の従来の微粉炭焚きボイラのバーナノズルはい耐熱
鋼素材で構成されてい友、 〔発明が解決しようとする′Ｉ！１題じところが従来の
耐熱鋼製のバーナノズルでは、微粉炭による摩耗により
減肉が激しく早いもので１年間の運転で堆替える必要が
あり念。このため、ノズルの取替えひん度の延長が望１
れてい友。The burner nozzle of the conventional pulverized coal-fired boiler mentioned above is made of heat-resistant steel material. One problem is that with conventional burner nozzles made of heat-resistant steel, the thickness decreases rapidly due to wear caused by pulverized coal, and it is necessary to replace the nozzle after every year of operation. For this reason, it is desirable to extend the frequency of nozzle replacement.
Dear friend.

本発明は、以上の問題点を解決することができる微粉炭
焚きバーナノズルを提供しようとするものである、 〔課題を解決する友めの手段〕 本発明は、バーナノズルの内面に耐摩耗性を有する物質
を被＆（−友。The present invention aims to provide a pulverized coal-fired burner nozzle that can solve the above-mentioned problems. Substance covered & (- friend.

〔作用〕[Effect]

本発明の微粉炭焚きバーナノズルは上記のように構成さ
れているので、バーナ燃焼に供される微粉炭は、その内
面が耐摩耗性を有する物質を被覆したノズルチップを通
過することとなり微粉炭によるバーナノズルの摩耗量を
著しく低減させることができる。Since the pulverized coal-fired burner nozzle of the present invention is configured as described above, the pulverized coal used for burner combustion passes through the nozzle tip whose inner surface is coated with a wear-resistant material, and the pulverized coal is heated by the pulverized coal. The amount of wear on the burner nozzle can be significantly reduced.

〔実施す１」 本光明Ｄ−夾施列全、第１図によって説明す０ワ 本実施例は、第２図に示される型式の蒙粉炭Ｒｅホイラ
のバーナノズルチップ２の微粉炭が通過する内面に耐ａ
ａ性の高い物質工９なる被覆材１ｔ−設けた。[Practice 1] This embodiment is explained by referring to FIG. 1. In this embodiment, the pulverized coal of the burner nozzle tip 2 of the pulverized coal Re wheeler of the type shown in FIG. 2 passes through. A-resistant on the inside
A coating material 1t made of material 9 with high abrasion properties was provided.

この被覆材１は、 （１）溶射被覆（例えば自溶性合金、１３Ｃｒ鋼、セラ
ミック等による溶射被！！ｉ）、 （２）　　メツキ（例えはＮ　ｉ　−Ｐ、　Ｎ　ｉ　−
Ｐ−Ｂ　Ｎ等のメツキ） ；３）　　アルミニウム拡散処理 等によって形成される。This coating material 1 includes: (1) thermal spray coating (for example, thermal spray coating of self-fluxing alloy, 13Cr steel, ceramic, etc.), (2) plating (for example, Ni-P, Ni-
3) Formed by aluminum diffusion treatment, etc.

本実施例では、耐摩耗性の高い物質の被覆材１によって
、バーナノズルチノグ２内會通過する微粉炭によるバー
ナノズルチップ２の摩耗量を著しく低減させることがで
きる。In this embodiment, the amount of wear on the burner nozzle tip 2 caused by the pulverized coal passing through the burner nozzle nozzle 2 can be significantly reduced by using the coating material 1 made of a material with high wear resistance.

な訃、前記実施例では、バーナノズルチクブ内面に耐摩
耗性の高い物質よりなる被覆材を設けているが、本発明
においては、バーナノズルチア・ブ、−ｉ、外、つバー
ナノズルチップ、つ童粉災が接＠ｆ巳部分に、耐摩耗性
り高・ハ吻λ二つなる被覆材を投けるようにすることが
できる・。However, in the embodiment described above, a coating material made of a material with high wear resistance is provided on the inner surface of the burner nozzle tip, but in the present invention, the burner nozzle tip is It is possible to apply two types of abrasion-resistant coating materials to the parts where the powder comes in contact with the powder.

〔発明の効果〕〔Effect of the invention〕

以上説明し念ように不発明は微粉炭が接触するバーナノ
ズルＤ内面に耐摩耗性のある物質を被覆したことにエリ
、バーナノズルの寿命が人中に延び、取替ひん度を短縮
させることができ、またこｎに伴って保修費の低減など
経済的効果が太き一つAs explained above, the invention is based on coating the inner surface of the burner nozzle D, which comes in contact with pulverized coal, with a wear-resistant material, which extends the life of the burner nozzle and reduces the frequency of replacement. In addition, economic effects such as reduced maintenance costs are becoming more significant.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の一実施例の縦断面図、第２図（ａ４　
、　（ｂ）はそれぞれ従来の微粉炭焚きバーナノズルの
縦断面図と側面図、第３図は従来の微粉炭焚さボイラの
概念図であるう １−・・被覆材、２・・・バーナノズルチップ、３・−
・仕切板、４・・・バーナノズル、５−・・外ｍ、６−
・・バーナ、７・・・ボイラ本体。 代理人　弁理士　　坂　間　　　　暁　　　　　外２名
第１図 第３図 第２図 （ａ） （ｂ）FIG. 1 is a vertical sectional view of one embodiment of the present invention, and FIG. 2 (A4
, (b) are a longitudinal cross-sectional view and a side view of a conventional pulverized coal-fired burner nozzle, respectively, and Fig. 3 is a conceptual diagram of a conventional pulverized coal-fired boiler. Chip, 3・-
・Partition plate, 4...burner nozzle, 5-...outer m, 6-
... Burner, 7... Boiler body. Agent: Patent attorney Akira Sakama and two others Figure 1 Figure 3 Figure 2 (a) (b)

Claims (1)

【特許請求の範囲】[Claims] 内面に耐摩耗性を有する物質を被覆したことを特徴とす
る微粉炭焚きバーナノズル。A pulverized coal-fired burner nozzle whose inner surface is coated with a wear-resistant material.
JP23238490A 1990-09-04 1990-09-04 Pulverized coal burning burner nozzle Pending JPH04113103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23238490A JPH04113103A (en) 1990-09-04 1990-09-04 Pulverized coal burning burner nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23238490A JPH04113103A (en) 1990-09-04 1990-09-04 Pulverized coal burning burner nozzle

Publications (1)

Publication Number Publication Date
JPH04113103A true JPH04113103A (en) 1992-04-14

Family

ID=16938392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23238490A Pending JPH04113103A (en) 1990-09-04 1990-09-04 Pulverized coal burning burner nozzle

Country Status (1)

Country Link
JP (1) JPH04113103A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003004935A1 (en) * 2001-07-03 2003-01-16 Alstom Technology Ltd Pulverized solid fuel nozzle tip with ceramic component
JP2013174370A (en) * 2012-02-23 2013-09-05 Mitsubishi Heavy Ind Ltd Burner exclusive for biomass burning
KR101494767B1 (en) * 2014-05-13 2015-03-02 정정운 Nozzle tip for burner

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003004935A1 (en) * 2001-07-03 2003-01-16 Alstom Technology Ltd Pulverized solid fuel nozzle tip with ceramic component
JP2013174370A (en) * 2012-02-23 2013-09-05 Mitsubishi Heavy Ind Ltd Burner exclusive for biomass burning
KR101494767B1 (en) * 2014-05-13 2015-03-02 정정운 Nozzle tip for burner
WO2015174629A1 (en) * 2014-05-13 2015-11-19 주식회사 하나웰텍 Burner nozzle tip
CN106104155A (en) * 2014-05-13 2016-11-09 哈纳沃特株式会社 Burner nozzle
JP2017509856A (en) * 2014-05-13 2017-04-06 ハナ ウェルテック カンパニー リミテッド Burner nozzle tip

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