JPH03221591A - Slag discharging device of entrained flow layer type coal gasifying furnace - Google Patents
Slag discharging device of entrained flow layer type coal gasifying furnaceInfo
- Publication number
- JPH03221591A JPH03221591A JP1654990A JP1654990A JPH03221591A JP H03221591 A JPH03221591 A JP H03221591A JP 1654990 A JP1654990 A JP 1654990A JP 1654990 A JP1654990 A JP 1654990A JP H03221591 A JPH03221591 A JP H03221591A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- slag
- tap
- chamber
- cooling chamber
- 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
Links
- 239000002893 slag Substances 0.000 title claims abstract description 45
- 239000003245 coal Substances 0.000 title claims abstract description 20
- 238000007599 discharging Methods 0.000 title description 2
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000002309 gasification Methods 0.000 claims description 30
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は噴流層式石炭ガス化炉に係り、特にガス化炉か
らスラブを安定して排出するのに好適なスラグ排出装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an entrained bed coal gasifier, and particularly to a slag discharge device suitable for stably discharging slabs from a gasifier.
従来の噴流層式石炭ガス化炉のスラブ排出装置は、特開
昭６２−２３６８９１号公報に記載されているように、
ガス化炉の底部にスラグタップとガスタップが設けられ
、微粉砕された石炭を石炭供給バーナからガス化炉のガ
ス化室へ接線方向に吹込むことによりガス化室内部で旋
回流を起こさせ、炉壁面部と炉中心部とで圧力差（炉壁
面部の圧力が炉中心部の圧力より高くなる）を生しさせ
て、これによりガス化室内部の高温ガスをスラグタップ
からガスタップへと自己循環させている。A conventional slab discharge device for a spouted bed coal gasifier is as described in Japanese Patent Application Laid-Open No. 62-236891.
A slag tap and a gas tap are provided at the bottom of the gasifier, and the pulverized coal is tangentially blown from the coal supply burner into the gasification chamber of the gasifier to create a swirling flow inside the gasification chamber. A pressure difference is created between the furnace wall and the furnace center (the pressure on the furnace wall is higher than the pressure in the furnace center), and this causes the high temperature gas inside the gasification chamber to flow from the slag tap to the gas tap. It is being circulated.
そして、循環する高温ガスにより、スラグタップを高温
状態にし、スラグを溶解させて排出するようにしている
。The circulating high-temperature gas heats the slag tap to melt the slag and discharge it.
しかしながら、スラグタップ下方の冷却室にはスタート
アップ用のオイルバーナが設けられており、このオイル
バーナがスラグによって詰まったり焼損したりするのを
防止するために、オイルバーナには不使用時にも常にＮ
２ガス等が吹込まれている。However, a startup oil burner is installed in the cooling chamber below the slag tap, and in order to prevent this oil burner from being clogged with slag or burnt out, the oil burner is always filled with nitrogen even when not in use.
2 gas etc. are blown into the tank.
上記従来技術では、この吹込みガスに対する配慮されて
おらず、吹込みガスにより高温ガスの自己循環が阻害さ
れると、スラブを安定して排出することが困難になる。In the above-mentioned conventional technology, no consideration is given to this blown gas, and if the self-circulation of the high-temperature gas is inhibited by the blown gas, it becomes difficult to discharge the slab stably.
また、吹込む石炭の量を減らすと、ガス化室の炉壁面部
と中心部との圧力差が小さくなり、高温ガスの循環量が
少なくなってしまう。すなわち、低負荷でガス化炉を運
転すると、スラグが十分に排出されないという問題があ
る６
本発明の目的は、高温ガスを強制的に循環させることに
より、スラブを安定して排出することができる噴流層式
石炭ガス化炉のスラグ排出装置を提供することである。Furthermore, if the amount of coal to be blown is reduced, the pressure difference between the furnace wall surface and the center of the gasification chamber becomes smaller, and the amount of high-temperature gas circulated decreases. In other words, when the gasifier is operated at low load, there is a problem that slag is not sufficiently discharged.6 The object of the present invention is to be able to stably discharge slag by forcibly circulating high-temperature gas. An object of the present invention is to provide a slag discharge device for a spouted bed coal gasifier.
上記目的を達成するために、本発明は、石炭から可燃性
ガスを生成するガス化室とガス生成時に生じるスラグを
冷却する冷却室とをスラグタップとガスタップで連通し
、前記ガス化室の高温ガスを前記スラグタップを介して
前記冷却室へ、さらにガスタップを介して前記ガス化室
へと循環させることにより、スラグタップを高温状態に
してスラグを排出する噴流層式石炭ガス化炉のスラグ排
出装置において、前記ガスタップを介して前記ガス化室
へガス体を噴射する噴射手段を設けたものである。In order to achieve the above object, the present invention connects a gasification chamber that generates combustible gas from coal and a cooling chamber that cools slag produced during gas generation through a slag tap and a gas tap, and Slag discharge of a spouted bed coal gasifier, in which the slag tap is brought to a high temperature state and slag is discharged by circulating gas through the slag tap to the cooling chamber and further through the gas tap to the gasification chamber. The apparatus is provided with an injection means for injecting a gas into the gasification chamber through the gas tap.
上記構成によれば、噴射手段によりガス体（例えばスチ
ーム等のガス化剤）を吹込むと、吹込まれたガス体の運
動エネルギによりエゼクタ効果を生じ、冷却室にある高
温ガスをガスタップを介してガス化室内に吹上げるとと
もに、ガス化室内で加熱された高温ガスをスラグタップ
を介して吸引する。これにより、ガス化室と冷却室との
間で高温ガスを強制的に循環させ、スラグタップを常に
高温状態に維持することができ、スラグを完全に溶融さ
せ安定して排出することが可能となる。According to the above configuration, when a gas body (for example, a gasifying agent such as steam) is blown in by the injection means, the kinetic energy of the blown gas body causes an ejector effect, and the high-temperature gas in the cooling chamber is directed through the gas tap. While blowing up into the gasification chamber, the high temperature gas heated inside the gasification chamber is sucked through the slag tap. This makes it possible to forcibly circulate high-temperature gas between the gasification chamber and the cooling chamber, and to maintain the slag tap at a constant high temperature, making it possible to completely melt the slag and discharge it stably. Become.
以下に本発明の一実施例を図面を参照して説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明に係る噴流層式石炭ガス化炉のスラグ排
出装置の概略構成を示している。図に示すように、ガス
化炉はケーシング３で形成され、その内部には耐火材１
６で囲まれたガス化室１７と冷却室１９が設けられてい
る。ガス化室１７の底部にはスラグタップ１とガスタッ
プ２が設けられ、このスラグタップ１とガスタップ２を
介してガス化室１７は冷却室１９に連通している。ガス
化室１７の周囲には複数の石炭供給ノズル２１がガス化
室１７の接線方向に配設され、石炭供給ノズル２１には
石炭供給管２２と冷却水供給管２３が接続されている。FIG. 1 shows a schematic configuration of a slag discharge device for a spouted bed coal gasifier according to the present invention. As shown in the figure, the gasifier is formed of a casing 3, inside which is a refractory material 1.
A gasification chamber 17 and a cooling chamber 19 surrounded by 6 are provided. A slag tap 1 and a gas tap 2 are provided at the bottom of the gasification chamber 17, and the gasification chamber 17 communicates with a cooling chamber 19 via the slag tap 1 and gas tap 2. A plurality of coal supply nozzles 21 are arranged around the gasification chamber 17 in a tangential direction of the gasification chamber 17, and a coal supply pipe 22 and a cooling water supply pipe 23 are connected to the coal supply nozzle 21.
なお、図の符号２４は石炭供給ノズル２１の開口部を示
している。Note that the reference numeral 24 in the figure indicates the opening of the coal supply nozzle 21.
冷却室１９の壁面にはスチームを吹込むためのスチーム
供給管４が固定され、このスチーム供給管４内のスチー
ム量は調節弁１４で調節される。A steam supply pipe 4 for blowing steam is fixed to the wall of the cooling chamber 19, and the amount of steam in the steam supply pipe 4 is adjusted by a control valve 14.
スチーム供給Ｗ４は冷却室１９内で折り曲げられ、その
先端部がガス化室１７に向くようにしてガスタップ２の
中心に配置されている。またスチーム供給管４にはミニ
マムフローライン２０が設けられ、ガス化剤としても作
用するスチームの最少必要量が確保されている。スラグ
タップｌの下方には、スラグタップ１より吹出す高温ガ
スの温度を測定するための熱電対５が取り付けられてお
り、この熱電対５の測定温度は調節弁１４にカスケード
されるようになっている。The steam supply W4 is bent within the cooling chamber 19 and placed at the center of the gas tap 2 with its tip facing the gasification chamber 17. Further, the steam supply pipe 4 is provided with a minimum flow line 20 to ensure the minimum required amount of steam that also acts as a gasifying agent. A thermocouple 5 for measuring the temperature of the high-temperature gas blown out from the slag tap 1 is attached below the slag tap l, and the temperature measured by the thermocouple 5 is cascaded to the control valve 14. ing.
また、冷却室１９には給水管１０と排水管■１が設けら
れている。排水管１１にはレベル検出座１２からの液面
検出信号に応じて作動する液面調整弁１５が配設され、
冷却室１９内に張られた冷却水工８を一定レベルに保持
できるようになっている。さらに、冷却室１９の壁面に
は、油供給管７に接続されたスタートアップ用のオイル
バーナ６が取付けられている。オイルバーナ６では、高
圧条件下で使用可能なように、燃焼空気として高圧Ｎ２
ガスと高圧０２ガスの混合気が用いられる。Further, the cooling chamber 19 is provided with a water supply pipe 10 and a drain pipe 1. The drain pipe 11 is provided with a liquid level adjustment valve 15 that operates in response to a liquid level detection signal from the level detection seat 12.
The cooling water system 8 installed in the cooling chamber 19 can be maintained at a constant level. Furthermore, a startup oil burner 6 connected to the oil supply pipe 7 is attached to the wall surface of the cooling chamber 19. In oil burner 6, high pressure N2 is used as combustion air so that it can be used under high pressure conditions.
A mixture of gas and high pressure 02 gas is used.
このため、オイルバーナ６には酸素供給管８と窒素供給
管９が接続されている。また冷却室１９の底部にはスラ
グ排出ノズル１３が設けられ、冷却室１９底部へ流下し
て冷却水工８で急冷されたスラグを炉外へ排出できるよ
うになっている。For this reason, an oxygen supply pipe 8 and a nitrogen supply pipe 9 are connected to the oil burner 6. Further, a slag discharge nozzle 13 is provided at the bottom of the cooling chamber 19, so that the slag that has flowed down to the bottom of the cooling chamber 19 and has been rapidly cooled by the cooling water system 8 can be discharged out of the furnace.
なお、本実施例では、スチーム供給管４、熱電対５、お
よび調節弁１４が噴射手段を構成している。In this embodiment, the steam supply pipe 4, thermocouple 5, and control valve 14 constitute the injection means.
次に本実施例の作用について説明する。Next, the operation of this embodiment will be explained.
ガスタップ２を介してスチーム供給管４からスチームを
吹込むと、吹込まれたスチームの運動エネルギによりエ
ゼクタ効果を生じ、冷却室１９内の高温ガスはガス化室
１７へ吹上げられる。これによって、ガス化室１７と冷
却室１９とで圧力差が発生し、ガス化室１７内の高温ガ
スがスラグタップ１を介して冷却室１９へ吹出す。この
ようにして、ガス化室１７と冷却室１９との間で高温ガ
スを強制的に循環させることができる。この場合、スラ
グタップ１から冷却室１９へ吹出す高温ガスの温度は熱
電対５により検出され、その検出温度に応じて調節弁１
４の開度が調節されて、スラグタップ１の温度をスラブ
の溶融流下温度以上に保つへくスチームの吹込み量が制
御される。When steam is blown from the steam supply pipe 4 through the gas tap 2, the kinetic energy of the blown steam produces an ejector effect, and the high temperature gas in the cooling chamber 19 is blown up into the gasification chamber 17. As a result, a pressure difference is generated between the gasification chamber 17 and the cooling chamber 19, and the high temperature gas in the gasification chamber 17 is blown out to the cooling chamber 19 via the slag tap 1. In this way, high-temperature gas can be forced to circulate between the gasification chamber 17 and the cooling chamber 19. In this case, the temperature of the high temperature gas blown out from the slag tap 1 to the cooling chamber 19 is detected by the thermocouple 5, and the control valve 1 is adjusted according to the detected temperature.
The opening degree of 4 is adjusted to control the amount of steam blown into the slag tap 1 to keep the temperature of the slag tap 1 at or above the melt flow temperature of the slab.
なお５本実施例ではガス化室１７ヘスチームを吹込みよ
うにしたが、スチームの代わりに、ガス化炉からの生成
ガスを吹込んだり、窒素ガスを吹込んだりしても良い。In this embodiment, steam is blown into the gasification chamber 17, but instead of steam, generated gas from a gasification furnace or nitrogen gas may be blown into the gasification chamber 17.
以上説明したように、本発明によれば、ガス化室と冷却
室との間で高温ガスを強制的に循環させて、しかも、そ
の循環量の強弱を自由に調整できるので、スラグタップ
の温度を常にスラグの溶融流下温度以上に保持すること
ができ、スラグを安定して排出することが可能となる。As explained above, according to the present invention, high-temperature gas is forcibly circulated between the gasification chamber and the cooling chamber, and the strength of the circulation amount can be freely adjusted. can be maintained at a temperature higher than the melting temperature of the slag at all times, making it possible to discharge the slag stably.
第１図は本発明に係る噴流層式石炭ガス化炉のスラブ排
出装置の概略構成図である。
１・・・スラグタップ、２・・・ガスタップ、４・・・
スチーム供給管、５・・熱電対、６・・・オイルバーナ
、１３・・・スラグ排出ノズル、１４・・調節弁、１７
・・・ガス化室、１８・・冷却水、１９・・・冷却室、
２１・・・石炭供給バーナ。FIG. 1 is a schematic diagram of a slab discharge device for an entrained bed coal gasifier according to the present invention. 1...Slag tap, 2...Gas tap, 4...
Steam supply pipe, 5...Thermocouple, 6...Oil burner, 13...Slag discharge nozzle, 14...Control valve, 17
...gasification chamber, 18..cooling water, 19..cooling chamber,
21...Coal supply burner.
Claims (1)
時に生じるスラグを冷却する冷却室とをスラグタップと
ガスタップで連通し、前記ガス化室の高温ガスを前記ス
ラグタップを介して前記冷却室へ、さらにガスタップを
介して前記ガス化室へと循環させることにより、スラグ
タップを高温状態にしてスラグを排出する噴流層式石炭
ガス化炉のスラグ排出装置において、 前記ガスタップを介して前記ガス化室へガス体を噴射す
る噴射手段を設けたことを特徴とする噴流層式石炭ガス
化炉のスラグ排出装置。[Claims] 1. A gasification chamber that generates flammable gas from coal and a cooling chamber that cools slag produced during gas generation are communicated through a slag tap and a gas tap, and the high-temperature gas in the gasification chamber is connected to the slag. A slag discharge device for a spouted-bed coal gasification furnace that discharges slag by keeping the slag tap in a high temperature state by circulating the slag to the cooling chamber through a tap and further to the gasification chamber through a gas tap, comprising: A slag discharge device for a spouted bed coal gasifier, characterized in that an injection means for injecting a gas into the gasification chamber via a gas tap is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016549A JPH086099B2 (en) | 1990-01-26 | 1990-01-26 | Slag discharge device of spouted bed coal gasifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016549A JPH086099B2 (en) | 1990-01-26 | 1990-01-26 | Slag discharge device of spouted bed coal gasifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03221591A true JPH03221591A (en) | 1991-09-30 |
| JPH086099B2 JPH086099B2 (en) | 1996-01-24 |
Family
ID=11919356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016549A Expired - Fee Related JPH086099B2 (en) | 1990-01-26 | 1990-01-26 | Slag discharge device of spouted bed coal gasifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086099B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114672345A (en) * | 2020-12-27 | 2022-06-28 | 新疆宜化化工有限公司 | Blowing process and device for preventing coke residue deposition at furnace bottom of circulating fluidized bed coal gasifier |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5176302A (en) * | 1974-08-28 | 1976-07-01 | Shell Int Research | |
| JPS62236891A (en) * | 1986-04-09 | 1987-10-16 | Hitachi Ltd | Method and apparatus for gasification in coal gasification oven |
-
1990
- 1990-01-26 JP JP2016549A patent/JPH086099B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5176302A (en) * | 1974-08-28 | 1976-07-01 | Shell Int Research | |
| JPS62236891A (en) * | 1986-04-09 | 1987-10-16 | Hitachi Ltd | Method and apparatus for gasification in coal gasification oven |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114672345A (en) * | 2020-12-27 | 2022-06-28 | 新疆宜化化工有限公司 | Blowing process and device for preventing coke residue deposition at furnace bottom of circulating fluidized bed coal gasifier |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH086099B2 (en) | 1996-01-24 |
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