JPH0740813Y2 - Burner for coal gasification - Google Patents
Burner for coal gasificationInfo
- Publication number
- JPH0740813Y2 JPH0740813Y2 JP8514089U JP8514089U JPH0740813Y2 JP H0740813 Y2 JPH0740813 Y2 JP H0740813Y2 JP 8514089 U JP8514089 U JP 8514089U JP 8514089 U JP8514089 U JP 8514089U JP H0740813 Y2 JPH0740813 Y2 JP H0740813Y2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- outer cylinder
- burner
- coal gasification
- coal
- 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 - Fee Related
Links
- 239000003245 coal Substances 0.000 title claims description 45
- 238000002309 gasification Methods 0.000 title claims description 34
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 2
- 239000002893 slag Substances 0.000 description 14
- 239000011819 refractory material Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
- 229910001882 dioxygen Inorganic materials 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は石炭ガス化装置に係り、特にガス化原料をガス
化炉に安定して供給するのに好適な石炭ガス化用バーナ
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a coal gasifier, and more particularly to a coal gasification burner suitable for stably supplying a gasification raw material to a gasification furnace.
一般に石炭ガス化用バーナは、第３図および第４図に示
すように、ガス化炉の炉壁を構成する耐火材５を貫通し
て配設されている。そして微粉炭噴出孔14Aの周囲に酸
素噴出孔9Aが複数個設けられ、微粉炭11は窒素ガスと共
に微粉炭噴出孔14Aを介して、ガス化剤としての酸素ガ
ス12は酸素噴出孔9Aを介してそれぞれ炉内15に供給され
る。また酸素噴出孔9Aの周囲に微粉炭または溶融スラグ
が溶着するのを防止するために、石炭ガス化用バーナの
内部には冷却水18を循環させるようになっている。In general, a coal gasification burner is arranged so as to penetrate a refractory material 5 that constitutes a furnace wall of a gasification furnace, as shown in FIGS. 3 and 4. And a plurality of oxygen ejection holes 9A are provided around the pulverized coal ejection hole 14A, the pulverized coal 11 together with the nitrogen gas through the pulverized coal ejection hole 14A, the oxygen gas 12 as a gasifying agent through the oxygen ejection hole 9A. Are respectively supplied to the furnace 15. Further, in order to prevent pulverized coal or molten slag from being deposited around the oxygen ejection holes 9A, cooling water 18 is circulated inside the coal gasification burner.
ところが、このような構造の石炭ガス化用バーナでは、
溶融スラグが炉壁内面を流下してきたとき、その溶融ス
ラグが石炭ガス化用バーナの先端部に付着して、上記両
噴出孔9A,14Aが狭くなるという欠点がある。However, in the coal gasification burner having such a structure,
When the molten slag flows down on the inner surface of the furnace wall, the molten slag adheres to the tip of the burner for coal gasification, and there is a drawback that both the ejection holes 9A and 14A become narrow.
そこで、この欠点を解消するようにした石炭ガス化用バ
ーナが、実開昭63−12009号公報で提案されている。こ
れは、第５図および第６図に示すように、微粉炭11と酸
素ガス12をそれぞれ搬送する２本の内筒８を設け、この
内筒８を収納する外筒７と耐火材５との間に間隙を設
け、この間隙からパージガス17を噴出させて、上部から
流下してくる溶融スラグをカーテン効果によって吹き飛
ばし、溶融スラグが石炭ガス化用バーナの先端部に付着
するのを防止するようにしたものである。なお、図で符
号16は外筒７と内筒８の間に設けられた断熱材である。Therefore, a burner for coal gasification which solves this drawback is proposed in Japanese Utility Model Laid-Open No. 63-12009. As shown in FIG. 5 and FIG. 6, this is provided with two inner cylinders 8 for respectively carrying pulverized coal 11 and oxygen gas 12, and an outer cylinder 7 for accommodating the inner cylinder 8 and a refractory material 5. A gap is provided between the two, and the purge gas 17 is jetted from this gap to blow off the molten slag flowing down from the upper part by the curtain effect, and prevent the molten slag from adhering to the tip part of the coal gasification burner. It is the one. In the figure, reference numeral 16 is a heat insulating material provided between the outer cylinder 7 and the inner cylinder 8.
しかしながら、上記従来技術の石炭ガス化用バーナで
も、石炭ガス化用バーナの先端部への溶融スラグの付着
防止を完全に解決するには至っていない。すなわち、炉
壁内面を流下してきた溶融スラグは、ある程度の厚さ
（１〜5mm）を有しているが、上記従来の石炭ガス化用
バーナはその先端部が炉壁内面と面一であるために、溶
融スラグが前記両噴出孔に流れ易く、石炭ガス化用バー
ナを冷却水で冷却して溶融スラグの付着力を弱くして
も、石炭ガス化用バーナの噴出孔が閉塞する恐れがあ
る。However, even the above-mentioned conventional coal gasification burner has not completely solved the prevention of adhesion of molten slag to the tip of the coal gasification burner. That is, the molten slag flowing down the inner surface of the furnace wall has a certain thickness (1 to 5 mm), but the tip of the conventional coal gasification burner is flush with the inner surface of the furnace wall. Therefore, the molten slag easily flows into both the ejection holes, and even if the coal gasification burner is cooled with cooling water to weaken the adhesive force of the molten slag, the ejection holes of the coal gasification burner may be blocked. is there.
また、石炭ガス化用バーナが耐火材で保持されている
が、耐火材は浸食されたり破損したりし易いので、運転
中に石炭ガス化用バーナの外筒と耐火材との間隙寸法が
変化することがある。その結果、必要以上のパージガス
を使用してしまうことになる。石炭ガス化ガスをメタノ
ール合成等の化学原料として使用する場合、パージガス
中のN2等は、生成ガスの不純物として除去しなければな
らず、パージガスを多量に使用することは問題である。Also, the coal gasification burner is held by the refractory material, but the refractory material is easily eroded or damaged, so the gap between the outer cylinder of the coal gasification burner and the refractory material changes during operation. I have something to do. As a result, an excessive amount of purge gas will be used. When coal gasification gas is used as a chemical raw material for methanol synthesis or the like, N 2 and the like in the purge gas must be removed as impurities in the produced gas, and the use of a large amount of purge gas is a problem.
本考案の目的は、微粉末状の燃料、ガス化剤およびパー
ジガス等のガス化原料を炉内に安定して供給できる石炭
ガス化用バーナを提供することである。An object of the present invention is to provide a coal gasification burner capable of stably supplying fine powdered fuel, a gasifying agent such as a gasifying agent and a purge gas, into a furnace.
上記目的を達成するための、本考案の石炭ガス化バーナ
は、微粉末状の原料を炉内に供給する内筒を、ガス化剤
を炉内に供給する外筒の内部に同心円に配置するととも
に、前記外筒の先端部を炉壁内面より突出させて該外筒
を炉壁に固定し、かつスチームを噴出するスチーム噴出
孔を前記外筒の外周近傍の炉壁内面に設けたことを特徴
とする。In order to achieve the above object, the coal gasification burner of the present invention has an inner cylinder for supplying a fine powder raw material into a furnace and a concentric circle inside an outer cylinder for supplying a gasifying agent into the furnace. At the same time, the tip of the outer cylinder is projected from the inner surface of the furnace wall to fix the outer cylinder to the furnace wall, and a steam ejection hole for ejecting steam is provided on the inner surface of the furnace wall near the outer periphery of the outer cylinder. Characterize.
上記構成によれば、スチーム噴出孔が外筒の外周近傍の
炉壁面に設けられているため、安定したカーテン効果が
得られ、流下してくる溶融スラグを確実に吹き飛ばすこ
とができ、また万一、カーテン効果が有効に作用しなか
った場合でも、外筒の先端部を炉壁内面より突出させて
いるので、溶融スラグは外筒の外周面に沿って流れ、石
炭ガス化用バーナ先端部が閉塞されることはない。According to the above configuration, since the steam ejection holes are provided on the furnace wall surface in the vicinity of the outer periphery of the outer cylinder, a stable curtain effect can be obtained, and the molten slag that flows down can be surely blown off. Even if the curtain effect does not work effectively, since the tip of the outer cylinder is projected from the inner surface of the furnace wall, the molten slag flows along the outer peripheral surface of the outer cylinder and the burner tip for coal gasification is It is not blocked.
また、炉内へ突出した外筒の外周面はスチームによって
冷却されるため、微粉炭等の原料が石炭ガス化用バーナ
先端部に直接溶着することも防止できる。Further, since the outer peripheral surface of the outer cylinder protruding into the furnace is cooled by the steam, it is possible to prevent the raw material such as pulverized coal from being directly welded to the tip of the burner for coal gasification.
以下に、本考案の一実施例を図面に従って説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本考案の石炭ガス化用バーナの縦断面を、第２
図はその先端部の平面形状をそれぞれ示している。図に
おいて、ノズル１を有する内筒８は、ノズル２を有する
外筒７の内部に同心円に配設されている。ノズル１から
は微粉炭11が窒素（または空気）とともに供給され、ノ
ズル２からはガス化剤としての酸素ガス（または空気）
12が供給される。内筒８には、炉内15側に微粉炭噴出孔
14Aが形成され、この微粉炭噴出孔14A側は、多数の酸素
噴出孔9Aを備えたリング部材９により外筒７に結合され
ている。また外筒７の外側にはノズル３を有する筒状の
固定部材20が設けられ、固定部材20は耐火材５内に挿通
され、かつ固定部材20はバーナフランジ６を介して耐火
材５の周囲のガス化炉ケーシング４に固定されている。
固定部材20の炉内15側にはリング部材10が固定され、こ
のリング部材10は耐火材５と面一に配置されている。ま
たリング部材10には多数のスチーム噴出孔10Aが形成さ
れている。FIG. 1 is a vertical sectional view of a burner for coal gasification of the present invention.
The figures respectively show the planar shapes of the tips thereof. In the figure, an inner cylinder 8 having a nozzle 1 is concentrically arranged inside an outer cylinder 7 having a nozzle 2. Pulverized coal 11 is supplied together with nitrogen (or air) from nozzle 1, and oxygen gas (or air) as a gasifying agent from nozzle 2.
12 are supplied. The inner cylinder 8 has a pulverized coal ejection hole on the inner side of the furnace 15.
14A is formed, and the pulverized coal ejection hole 14A side is connected to the outer cylinder 7 by a ring member 9 having a large number of oxygen ejection holes 9A. A tubular fixing member 20 having a nozzle 3 is provided outside the outer cylinder 7, the fixing member 20 is inserted into the refractory material 5, and the fixing member 20 surrounds the refractory material 5 via a burner flange 6. It is fixed to the gasification furnace casing 4 of FIG.
A ring member 10 is fixed to the inside of the furnace 15 of the fixing member 20, and the ring member 10 is arranged flush with the refractory material 5. Further, a large number of steam ejection holes 10A are formed in the ring member 10.
また、外筒７はその先端部が耐火材５の内面より炉内15
側に約10mm突出して設けられ、さらに、内筒８はその先
端部が外筒７の先端部より２〜5mm内側に引っ込められ
た構造となっている。In addition, the tip of the outer cylinder 7 is inside the furnace 15 from the inner surface of the refractory material 5.
The inner cylinder 8 has a structure in which the tip of the inner cylinder 8 is retracted to the inside by 2 to 5 mm from the tip of the outer cylinder 7.
次ぎに本実施例の作用について説明する。Next, the operation of this embodiment will be described.
ノズル１から内筒８内に窒素と共に供給された微粉炭
（予め200メッシュ程度に微粉砕されている）11は、微
粉炭噴出孔14Aから炉内15に導入され、同時にノズル２
から外筒７内に供給された酸素ガス12は酸素噴出孔9Aか
ら炉内15に導入される。Pulverized coal (previously pulverized to about 200 mesh) 11 supplied together with nitrogen from the nozzle 1 into the inner cylinder 8 is introduced into the furnace 15 through the pulverized coal ejection hole 14A, and at the same time, the nozzle 2
The oxygen gas 12 supplied from the inside to the outer cylinder 7 is introduced into the furnace 15 through the oxygen ejection holes 9A.
一方、運転中は溶融スラグが炉壁内面を流下してくる
が、その溶融スラグは、スチーム噴出孔10Aからのスチ
ーム13によるカーテン効果によって吹き飛ばされ、外筒
７に付着するのが防止される。また万一、外筒７の外面
に付着しても、外筒７の先端部が耐火材５の内面より炉
内15側に突出して設けられているので、溶融スラグによ
り微粉炭噴出孔14Aや酸素噴出孔9Aが閉塞することはな
い。On the other hand, during operation, the molten slag flows down on the inner surface of the furnace wall, but the molten slag is blown away by the curtain effect of the steam 13 from the steam ejection holes 10A and is prevented from adhering to the outer cylinder 7. Even if it adheres to the outer surface of the outer cylinder 7, since the tip of the outer cylinder 7 is provided so as to project from the inner surface of the refractory material 5 toward the inside of the furnace 15, the pulverized coal injection holes 14A and The oxygen ejection hole 9A is never blocked.
本実施例によれば、炉内15へ突出した外筒７の外周面が
スチーム噴出孔10Aからのスチームによって冷却される
ため、微粉炭11等の原料が石炭ガス化用バーナ先端部に
直接溶着することがない。According to this embodiment, since the outer peripheral surface of the outer cylinder 7 protruding into the furnace 15 is cooled by the steam from the steam ejection holes 10A, the raw material such as the pulverized coal 11 is directly deposited on the tip of the burner for coal gasification. There is nothing to do.
また、カーテン効果を得るためのスチーム13は、水成化
反応により、炉内15においては石炭ガス化ガスの一部と
なり、生成ガス中の不純物を増加させることなく、化学
合成用の原料ガスとして使用することができる。Further, the steam 13 for obtaining the curtain effect becomes a part of the coal gasification gas in the furnace 15 due to the hydrogenation reaction, and serves as a raw material gas for chemical synthesis without increasing impurities in the produced gas. Can be used.
以上説明したように、本考案によれば、石炭ガス化用バ
ーナの溶融スラグによる閉塞を完全に防止できるので、
ガス化炉へ原料とガス化剤を安定して供給することが可
能である。As described above, according to the present invention, it is possible to completely prevent the clogging of the coal gasification burner due to the molten slag.
It is possible to stably supply the raw material and the gasifying agent to the gasification furnace.
第１図は本考案の石炭ガス化用バーナの縦断面図、第２
図は第１図の右側面図、第３図は従来の石炭ガス化用バ
ーナの縦断面図、第４図は第３図の右側面図、第５図は
従来の他の石炭ガス化用バーナの縦断面図、第６図は第
５図の右側の面図である。 1,2,3…ノズル、５…耐火材、７…外筒、８…内筒、9,1
0…リング部材、9A…酸素噴出孔、10A…スチーム噴出
孔、11…微粉炭、12…酸素ガス、13…スチーム、14A…
微粉炭噴出孔。FIG. 1 is a longitudinal sectional view of a burner for coal gasification of the present invention, FIG.
Fig. 1 is a right side view of Fig. 1, Fig. 3 is a vertical sectional view of a conventional coal gasification burner, Fig. 4 is a right side view of Fig. 3, and Fig. 5 is another conventional coal gasification burner. FIG. 6 is a vertical sectional view of the burner, and FIG. 6 is a right side view of FIG. 1,2,3 ... Nozzle, 5 ... Refractory material, 7 ... Outer cylinder, 8 ... Inner cylinder, 9,1
0 ... Ring member, 9A ... Oxygen ejection hole, 10A ... Steam ejection hole, 11 ... Pulverized coal, 12 ... Oxygen gas, 13 ... Steam, 14A ...
Pulverized coal spouting hole.
Claims (2)
ガス化剤を炉内に供給する外筒の内部に同心円に配置す
るとともに、前記外筒の先端部を炉壁内面より突出させ
て該外筒を炉壁に固定し、かつスチームを噴出するスチ
ーム噴出孔を前記外筒の外周近傍の炉壁内面に設けたこ
とを特徴とする石炭ガス化用バーナ。1. An inner cylinder for supplying a fine powder raw material into a furnace,
A steam which is concentrically arranged inside the outer cylinder for supplying the gasifying agent into the furnace, and the tip of the outer cylinder is projected from the inner surface of the furnace wall to fix the outer cylinder to the furnace wall, and the steam is ejected. A burner for coal gasification, characterized in that ejection holes are provided on the inner surface of the furnace wall near the outer periphery of the outer cylinder.
て、前記外筒の先端部は、前記炉壁面より約10mm突出し
ていることを特徴とする石炭ガス化用バーナ。2. The burner for coal gasification according to claim 1, wherein a tip portion of the outer cylinder projects about 10 mm from the wall surface of the furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8514089U JPH0740813Y2 (en) | 1989-07-20 | 1989-07-20 | Burner for coal gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8514089U JPH0740813Y2 (en) | 1989-07-20 | 1989-07-20 | Burner for coal gasification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0330013U JPH0330013U (en) | 1991-03-25 |
| JPH0740813Y2 true JPH0740813Y2 (en) | 1995-09-20 |
Family
ID=31634096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8514089U Expired - Fee Related JPH0740813Y2 (en) | 1989-07-20 | 1989-07-20 | Burner for coal gasification |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0740813Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101536743B1 (en) * | 2013-10-11 | 2015-07-15 | 주식회사 포스코 | Feed mixer for coal gasifier |
| KR20180130873A (en) * | 2017-05-30 | 2018-12-10 | 한국에너지기술연구원 | PDTR including an apparatus for preventing steam condensation |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010255892A (en) * | 2009-04-22 | 2010-11-11 | Electric Power Dev Co Ltd | Gasification burner and fuel supply method for gasification burner |
-
1989
- 1989-07-20 JP JP8514089U patent/JPH0740813Y2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101536743B1 (en) * | 2013-10-11 | 2015-07-15 | 주식회사 포스코 | Feed mixer for coal gasifier |
| KR20180130873A (en) * | 2017-05-30 | 2018-12-10 | 한국에너지기술연구원 | PDTR including an apparatus for preventing steam condensation |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0330013U (en) | 1991-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |