JPH0229930B2 - - Google Patents
Info
- Publication number
- JPH0229930B2 JPH0229930B2 JP57133789A JP13378982A JPH0229930B2 JP H0229930 B2 JPH0229930 B2 JP H0229930B2 JP 57133789 A JP57133789 A JP 57133789A JP 13378982 A JP13378982 A JP 13378982A JP H0229930 B2 JPH0229930 B2 JP H0229930B2
- Authority
- JP
- Japan
- Prior art keywords
- coal
- oxygen
- enriched air
- nitrogen
- air
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Description
【発明の詳細な説明】
本発明は、粉末状石炭の燃焼方法に関するもの
である。詳しく述べると、酸素富化膜を使用して
得られる酸素富化空気を微粉炭の燃焼に使用し、
また窒素富化空気を石炭粉砕用不活性ガスとして
使用する粉末状石炭の燃焼方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for burning powdered coal. Specifically, oxygen-enriched air obtained using an oxygen-enriched membrane is used to burn pulverized coal,
The present invention also relates to a method of burning powdered coal using nitrogen-enriched air as an inert gas for crushing coal.
最近、石油価格の高騰に伴なつて、各種のボイ
ラ、セメントキルン、その他の工業炉において石
炭が石油系燃料に代つて再び使用されるようにな
つてきた。しかしながら、石炭は石油系燃料とは
異なり固体であるので、取扱いが不便であるばか
りでなく、燃焼方法にも特別の工夫を要する。こ
のため、最近では石炭を微粉砕して微粉炭として
あるいは該微粉炭に石油系燃料、例えば重油を混
合して使用されているが、それでもなお効率よく
燃焼させることは困難であつた。このため、酸素
ボンベや液体酸素を用いて酸素を富化した空気を
使用することが提案されているが、経済性や安定
性の点で問題があつた。また前記微粉炭燃焼法に
おいては、石炭を予め微粉砕しておく必要がある
が、燃焼である石炭を微粉砕することは炭塵爆発
等の問題に関し、安全上無視し得ないものがあつ
た。 Recently, with the rise in oil prices, coal has once again been used in place of petroleum-based fuels in various boilers, cement kilns, and other industrial furnaces. However, unlike petroleum-based fuels, coal is solid, so it is not only inconvenient to handle, but also requires special ingenuity in its combustion method. For this reason, in recent years, coal has been pulverized into pulverized coal, or the pulverized coal is mixed with petroleum fuel, such as heavy oil, but it is still difficult to burn it efficiently. For this reason, it has been proposed to use air enriched with oxygen using an oxygen cylinder or liquid oxygen, but this has been problematic in terms of economy and stability. In addition, in the pulverized coal combustion method, it is necessary to pulverize the coal in advance, but pulverizing the coal during combustion poses problems such as coal dust explosions that cannot be ignored for safety reasons. .
一方、酸素富化空気を経済的に得る方法として
は、最近、酸素富化膜の使用が提案されている。
酸素富化膜法の場合、空気を酸素富化膜に吸引ブ
ロワまたは押込ブロワまたはその両者を利用して
透過させて酸素富化空気を得ているが、一方その
分だけ窒素富化空気が生成している。しかしなが
ら、窒素富化空気については現在ほとんど利用さ
れておらず、このため前記酸素富化空気も、未だ
充分安価とはいえない。 On the other hand, as a method for economically obtaining oxygen-enriched air, the use of oxygen-enriched membranes has recently been proposed.
In the case of the oxygen-enriched membrane method, air is passed through the oxygen-enriched membrane using a suction blower, a forced blower, or both to obtain oxygen-enriched air, but on the other hand, nitrogen-enriched air is produced accordingly. are doing. However, nitrogen-enriched air is hardly used at present, and therefore the oxygen-enriched air is still not sufficiently cheap.
本発明は、前記のごとき従来の問題点を解消す
るためになされたもので、空気を酸素富化膜に透
過させて酸素富化空気と窒素富化空気とに分離
し、該酸素富化空気を用いて粉末状石炭を燃焼さ
せ、かつ前記窒素富化空気の存在下に石炭を燃焼
装置内で粉砕して粉末状石炭を製造し、得られる
粉末状石炭−窒素富化空気混合物より前記窒素富
化空気を分離除去したのちに粉末状石炭を前記燃
焼装置に供給することを特徴とする粉末状石炭の
燃焼方法である。 The present invention has been made in order to solve the above-mentioned problems of the conventional art. and pulverizing the coal in a combustion apparatus in the presence of the nitrogen-enriched air to produce powdered coal, and from the resulting powdered coal-nitrogen-enriched air mixture, the nitrogen A method for combustion of powdered coal, characterized in that the powdered coal is supplied to the combustion device after separating and removing enriched air.
すなわち、本発明は、第一に空気を酸素富化膜
に透過させて酸素富化空気と窒素富化（酸素貧
化）空気とに分離することにある。酸素富化膜
は、有機高分子薄膜を通過する気体の透過性の差
異を利用して空気中の酸素を選択的に分離濃縮
し、酸素富化空気を生成するためのもので、その
時必然的に酸素貧化空気が窒素富化空気として生
成する。しかして、酸素富化モジユールの形態と
しては、平膜方式、スパイラル方式、中空糸方式
等種々のものがある。また、分離の駆動力として
は、圧力差を用いて通常一次側（空気側）を加圧
するか、二次側（酸素富化空気側）を減圧する
か、あるいはその両者を併用することによつて分
離エネルギーが供給される。また、前記酸素富化
膜としては、ジメチルシリコーン、ジメチルシリ
コーン−ポリカーボネート、セルロースアセテー
ト等があり、その膜厚は、例えば50〜500Åであ
る。しかして、前記酸素富化膜を用いて得られる
酸素富化空気は、酸素を22〜40％、好ましくは30
〜40％含有する空気であり、又窒素富化空気は、
酸素を５〜20％、好ましくは８〜13％含有する空
気である。 That is, the present invention first consists in separating air into oxygen-enriched air and nitrogen-enriched (oxygen-depleted) air by permeating air through an oxygen-enriching membrane. Oxygen-enriching membranes are used to selectively separate and concentrate oxygen in the air by utilizing the difference in gas permeability that passes through organic polymer thin films, and to generate oxygen-enriched air. Oxygen-depleted air is produced as nitrogen-enriched air. There are various forms of the oxygen enrichment module, such as a flat membrane type, a spiral type, and a hollow fiber type. In addition, the driving force for separation is usually increased pressure on the primary side (air side) using a pressure difference, reduced pressure on the secondary side (oxygen-enriched air side), or a combination of both. separation energy is supplied. The oxygen-enriching film may be made of dimethyl silicone, dimethyl silicone-polycarbonate, cellulose acetate, or the like, and has a thickness of, for example, 50 to 500 Å. Therefore, the oxygen-enriched air obtained using the oxygen-enriched membrane contains 22 to 40% oxygen, preferably 30% oxygen.
~40% containing air, and nitrogen-enriched air is
Air containing 5-20% oxygen, preferably 8-13%.
また、本発明は第二に前記酸素富化空気を粉末
状石炭の燃焼に使用することにあり、これにより
粉末状石炭の燃焼効率を高めることにある。本発
明は、第三に前記窒素富化空気を石炭の粉砕工程
に不活性ガスとして使用することにあり、これに
より粉砕工程における炭塵爆発を防止している。
さらに、本発明は、第四に石炭の粉砕工程で得ら
れた粉末状石炭−窒素富化空気混合物より前記窒
素富化空気を分離除去したのちに該粉末状石炭を
燃焼装置に供給することにあり、これにより燃焼
装置に供給される酸素富化空気中の酸素濃度をあ
まり低下させることなく、石炭の燃焼に供するこ
ととができるのである。 A second object of the present invention is to use the oxygen-enriched air for the combustion of powdered coal, thereby increasing the combustion efficiency of the powdered coal. A third aspect of the present invention is to use the nitrogen-enriched air as an inert gas in the coal pulverization process, thereby preventing coal dust explosions during the pulverization process.
Furthermore, fourthly, the present invention provides for separating and removing the nitrogen-enriched air from the powdered coal-nitrogen-enriched air mixture obtained in the coal pulverization step, and then supplying the powdered coal to a combustion device. As a result, the oxygen-enriched air supplied to the combustion device can be used for combustion of coal without significantly lowering the oxygen concentration.
つぎに、図面を参照しながら本発明の一実施態
様を説明する。すなわち、図面はポルトランドセ
メント製造工程における粉末状石炭の燃焼方法を
示すものである。同図に示すように、ブロワ１に
より酸素富化装置２に導入された空気は、その酸
素富化膜３を通過させることにより選択的に酸素
が通過することにより酸素富化空気となり、この
酸素富化空気は導管４より取出され、ブロワ５に
により導管６を経てバーナ７に送られ、後述する
ように供給ライン８により供給されてくる微粉炭
を燃焼させてロータリキルン９中のセメント原料
を、例えば1450〜1500℃に加熱焼成してクリンカ
ーを生成させる。キルン９より排出した燃焼ガス
はサスペンジヨンプレヒータ１０ａを通過したの
ち、熱交換器１０ｂで300〜400℃に冷却されて煙
道１１より排出される。なお、３４はクーラーで
ある。 Next, one embodiment of the present invention will be described with reference to the drawings. That is, the drawings show a method of burning powdered coal in the Portland cement manufacturing process. As shown in the figure, the air introduced into the oxygen enrichment device 2 by the blower 1 becomes oxygen-enriched air by selectively passing oxygen through the oxygen-enriching membrane 3. The enriched air is taken out from the conduit 4 and sent to the burner 7 via the conduit 6 by the blower 5, where it burns the pulverized coal supplied from the supply line 8 and converts the cement raw material in the rotary kiln 9, as will be described later. , for example, by heating and firing at 1450 to 1500°C to produce clinker. Combustion gas discharged from the kiln 9 passes through a suspension preheater 10a, is cooled to 300 to 400°C by a heat exchanger 10b, and is discharged from a flue 11. Note that 34 is a cooler.
一方、前記酸素富化装置２より得られる窒素富
化空気（酸素貧化空気）は導管１２を経て熱交換
器１０ｂに送られて所定の温度、例えば200〜300
℃に加熱されたのち、乾燥器１８に導入される。
貯炭場１４の石炭はバスケツトエレベータ１５に
より石炭タンク１６に搬送されたのち、テーブル
フイーダ１７により乾燥器１８で乾燥される。乾
燥器における粉塵はサイクロン１９である程度回
収され、そのガスはさらに導管２０によりバツク
フイルタ２１に導かれて微粉末状物を回収された
のち、ブロワ２２により系外に排出される。 On the other hand, the nitrogen-enriched air (oxygen-depleted air) obtained from the oxygen enrichment device 2 is sent to the heat exchanger 10b via the conduit 12 to a predetermined temperature, e.g.
After being heated to .degree. C., it is introduced into the dryer 18.
Coal in the coal storage yard 14 is transported to a coal tank 16 by a basket elevator 15, and then dried in a dryer 18 by a table feeder 17. A certain amount of the dust in the dryer is collected by a cyclone 19, and the gas is further led to a back filter 21 through a conduit 20 to collect fine powder, which is then discharged to the outside of the system by a blower 22.
乾燥器１８で乾燥された石炭およびサイクロン
１９で回収された微粉炭は粉砕機１３に搬送され
たのち、導管２３より導入される窒素富化空気の
存在下に微粉砕される。微粉砕された石炭（微粉
炭）は、導管２４により前記窒素富化ガスととも
にサイクロン２５に送られて微粉炭と窒素富化空
気とに分離され、窒素富化空気は導管２６を経て
バツクフイルタ２１に送られて微粉末状物を除去
されたのち、ブロワ２２により系外に排出され
る。 The coal dried in the dryer 18 and the pulverized coal recovered in the cyclone 19 are conveyed to the pulverizer 13 and then pulverized in the presence of nitrogen-enriched air introduced through the conduit 23. The pulverized coal (pulverized coal) is sent to the cyclone 25 along with the nitrogen-enriched gas through a conduit 24 and separated into pulverized coal and nitrogen-enriched air, and the nitrogen-enriched air is sent to the back filter 21 through a conduit 26. After being sent and removing fine powder, it is discharged out of the system by the blower 22.
サイクロン２５で回収された微粉炭は導管２７
により、又バツクフイルタ２１で回収された微粉
末状物は導管２８によりそれぞれ石炭サイロ２９
に送られ、フイーダ３０より導管３１を経て、ブ
ロワ３３により作動されるエジエクタ３２により
導管８を経てバーナ７に導入される。 The pulverized coal recovered by the cyclone 25 is transferred to the conduit 27
The fine powder recovered by the back filter 21 is sent to a coal silo 29 via a conduit 28.
From the feeder 30, it passes through the conduit 31, and is introduced into the burner 7 through the conduit 8 by the ejector 32 operated by the blower 33.
以上、セメント製造装置を例にとつて説明した
が、ロータリーキルン９の代りにボイラーを用い
れば、火力発電所におけるボイラあるいはその他
のボイラにおける微粉炭燃焼方法、あるいはセラ
ミツク焼成炉、ガラス溶解炉、鍛造用加熱炉、鋼
材熱処理炉等における微粉炭の燃焼方法にも適用
できることはもちろんである。 The above explanation has been given using cement manufacturing equipment as an example, but if a boiler is used instead of the rotary kiln 9, it can be used for pulverized coal combustion in a boiler in a thermal power plant or other boilers, or for use in ceramic kilns, glass melting furnaces, and forging. It goes without saying that the present invention can also be applied to methods of burning pulverized coal in heating furnaces, steel heat treatment furnaces, and the like.
つぎに、実施例を挙げて本発明方法をさらに詳
細に説明する。 Next, the method of the present invention will be explained in more detail with reference to Examples.
実施例
図面に示すようなポルトランドセメントの製造
方法において、ブロワ１により酸素富化装置に空
気を導入し、酸素濃度約35容量％野酸素富化空気
3000m3／hrと酸素濃度約11.7容量％の窒素富化空
気1286m3／hrを得た。酸素富化空気3000m3／hrと
微粉炭5000Kg／hrとをバーナ７に送つて燃焼さ
せ、ロータリーキルン内の温度を1600〜1700℃に
保つてクリンカーを焼成し、その廃ガスはサスペ
ンジヨンプレヒーターを通つて、熱交換器１０ｂ
を通過させたのち、系外に排出させた。窒素富化
空気1286m3／hrは熱交換器１０ｂで200〜300℃に
予熱したのち、熱交換器１８に送つて石炭の乾燥
に供した。Example In the method for manufacturing Portland cement as shown in the drawing, air is introduced into the oxygen enrichment device by blower 1, and the air is enriched with oxygen at an oxygen concentration of approximately 35% by volume.
3000 m 3 /hr and 1286 m 3 /hr of nitrogen-enriched air with an oxygen concentration of about 11.7% by volume were obtained. 3000m 3 /hr of oxygen-enriched air and 5000Kg/hr of pulverized coal are sent to burner 7 for combustion, and the temperature inside the rotary kiln is maintained at 1600 to 1700℃ to burn clinker, and the waste gas is sent to the suspension preheater. Through the heat exchanger 10b
After passing through, it was discharged from the system. 1286 m 3 /hr of nitrogen-enriched air was preheated to 200 to 300°C in the heat exchanger 10b, and then sent to the heat exchanger 18 to dry the coal.
一方、石炭5250Kg／hrを乾燥器１８に搬送して
乾燥し、乾燥石炭5000Kg／hr（サイクロン１９で
の回収分も含む）を粉砕機１３に搬送し、導管２
３より供給される窒素富化空気とともに微粉砕し
た。微粉炭はサイクロン２５で微粉炭と窒素富化
空気として分離して、微粉炭5000Kg／hrを得た。 On the other hand, 5250Kg/hr of coal is transported to the dryer 18 and dried, 5000Kg/hr of dry coal (including the amount recovered in the cyclone 19) is transported to the crusher 13, and the conduit 2
The mixture was pulverized with nitrogen-enriched air supplied from No. 3. The pulverized coal was separated into pulverized coal and nitrogen-enriched air in a cyclone 25 to obtain 5000 kg/hr of pulverized coal.
以上述べたように、本発明による粉末状石炭の
燃焼方法は、空気を酸素富化膜に透過させて酸素
富化空気と窒素富化空気とに分離し該酸素富化空
気を用いて粉末状石炭を燃焼装置内で燃焼させ、
かつ前記窒素富化空気の存在下に石炭を粉砕して
粉末状石炭を製造し、得られる粉末状石炭−窒素
富化空気混合物より前記窒素富化空気を分離除去
したのちに前記粉末状石炭を前記燃焼装置に供給
することにより行なわれるものであるから、酸素
富化空気の使用により粉末状石炭の燃焼効率を高
めることができるだけでなく、窒素富化空気の使
用により石炭粉砕時に生じやすい粉塵爆発等の安
全上の問題なくなり、しかも、酸素富化空気製造
時に副生する窒素富化空気の有効利用に寄与する
という利点がある。さらに、石炭の粉砕時に使用
される窒素富化空気は、粉末状石炭−窒素富化空
気混合物から予め実質的に分離してから、粉末状
石炭が燃焼装置に供給されるので、該燃焼装置に
供給されて粉末状石炭の燃焼に供される酸素富化
空気中の酸素濃度を実質的に低下させることがな
く、供給される酸素富化空気により効果が期待で
きるのである。 As described above, the method for combustion of powdered coal according to the present invention involves passing air through an oxygen-enriching membrane to separate it into oxygen-enriched air and nitrogen-enriched air, and using the oxygen-enriched air to form powdered coal. Burning coal in a combustion device,
and producing powdered coal by pulverizing coal in the presence of the nitrogen-enriched air, separating and removing the nitrogen-enriched air from the obtained powdered coal-nitrogen-enriched air mixture, and then producing the powdered coal. Since this is carried out by supplying the air to the combustion equipment, the use of oxygen-enriched air not only increases the combustion efficiency of powdered coal, but also reduces dust explosions that are likely to occur during coal pulverization by using nitrogen-enriched air. This method has the advantage that it eliminates safety problems such as the above, and contributes to the effective use of nitrogen-enriched air, which is produced as a by-product during the production of oxygen-enriched air. Additionally, the nitrogen-enriched air used during coal crushing is substantially separated from the powdered coal-nitrogen-enriched air mixture before the powdered coal is fed to the combustion device. The oxygen concentration in the oxygen-enriched air that is supplied and used for combustion of powdered coal is not substantially lowered, and the oxygen-enriched air that is supplied can be expected to be effective.
図面は、本発明による粉末状石炭の燃焼方法の
一実施例を表わすフローシートである。
２……酸素富化装置、３……酸素富化膜、７…
…バーナ、９……キルン、１０ｂ……熱交換器、
１８……乾燥器、１９，２５……サイクロン、１
３……石炭粉砕機、３２……エジエクタ。
The drawing is a flow sheet representing one embodiment of the method for burning powdered coal according to the present invention. 2...Oxygen enrichment device, 3...Oxygen enrichment membrane, 7...
...Burner, 9...Kiln, 10b...Heat exchanger,
18...Dryer, 19,25...Cyclone, 1
3... Coal crusher, 32... Executor.
Claims (1)
と窒素富化空気とに分離し、該酸素富化空気を用
いて粉末状石炭を燃焼装置内で燃焼させ、かつ前
記窒素富化空気の存在下に石炭を粉砕して粉末状
石炭を製造し、得られる粉末状石炭−窒素富化空
気混合物より前記窒素富化空気を分離除去したの
ちに前記粉末状石炭を前記燃焼装置に供給するこ
とを特徴とする粉末状石炭の燃焼方法。 ２ 酸素富化空気中の酸素濃度は22〜40容量％で
ある特許請求の範囲第１項に記載の方法。 ３ 該窒素富化空気の一部は前記粉末状石炭の燃
焼熱により加熱されたのち、前記石炭との接触さ
れて該石炭の乾燥に利用されてなる特許請求の範
囲第１項または第２項に記載の方法。[Claims] 1. Passing air through an oxygen-enriching membrane to separate it into oxygen-enriched air and nitrogen-enriched air, and using the oxygen-enriched air to burn powdered coal in a combustion device, and producing powdered coal by pulverizing coal in the presence of the nitrogen-enriched air, separating and removing the nitrogen-enriched air from the obtained powdered coal-nitrogen-enriched air mixture, and then producing the powdered coal. A method for burning powdered coal, which comprises supplying powdered coal to the combustion device. 2. The method according to claim 1, wherein the oxygen concentration in the oxygen-enriched air is 22 to 40% by volume. 3. A portion of the nitrogen-enriched air is heated by the heat of combustion of the powdered coal, and then brought into contact with the coal and used for drying the coal. The method described in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57133789A JPS5924115A (en) | 1982-08-02 | 1982-08-02 | Combustion of powdered coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57133789A JPS5924115A (en) | 1982-08-02 | 1982-08-02 | Combustion of powdered coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5924115A JPS5924115A (en) | 1984-02-07 |
| JPH0229930B2 true JPH0229930B2 (en) | 1990-07-03 |
Family
ID=15113043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57133789A Granted JPS5924115A (en) | 1982-08-02 | 1982-08-02 | Combustion of powdered coal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5924115A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61250417A (en) * | 1985-04-30 | 1986-11-07 | Mitsubishi Mining & Cement Co Ltd | Combustion burner |
| JPS62169908A (en) * | 1986-01-21 | 1987-07-27 | Kawasaki Heavy Ind Ltd | Pulverized coal combustion boiler |
| JPH02275214A (en) * | 1989-04-18 | 1990-11-09 | Mitsubishi Heavy Ind Ltd | Oxygen enriched combustion device of solid fuel |
| DE4313102A1 (en) * | 1993-04-22 | 1994-10-27 | Sbw Sonderabfallentsorgung Bad | Method of reducing the amount of exhaust gas to eliminate NO¶x¶ emissions from combustion, preferably from waste incineration |
| JP4730809B2 (en) * | 2004-09-10 | 2011-07-20 | 株式会社アマダ | Chip discharge device |
| CN102132097A (en) * | 2008-08-28 | 2011-07-20 | 宇部兴产株式会社 | Coal processing method and processing system |
| EP2487439B1 (en) | 2011-02-14 | 2019-05-08 | General Electric Technology GmbH | Method and system for milling a fuel for an oxy-fuel combustion burner |
| JP6019565B2 (en) * | 2011-11-16 | 2016-11-02 | 株式会社Ihi | Fine powder fuel supply method for oxyfuel boiler and oxyfuel boiler system |
| LU103187B1 (en) * | 2023-08-21 | 2025-02-21 | Thyssenkrupp Ag | Safe preparation of fuels using the oxyfuel process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4226371A (en) * | 1979-04-06 | 1980-10-07 | Willams Robert M | Inert grinding and direct firing in coal burning systems |
| JPS5659125A (en) * | 1979-10-17 | 1981-05-22 | Denka Consult & Eng Co Ltd | Fuel and air separate feed type burner for pneumatically conveyed solid fuel |
-
1982
- 1982-08-02 JP JP57133789A patent/JPS5924115A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5924115A (en) | 1984-02-07 |
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