JPS6017626A - Purging of fuel - Google Patents
Purging of fuelInfo
- Publication number
- JPS6017626A JPS6017626A JP12335283A JP12335283A JPS6017626A JP S6017626 A JPS6017626 A JP S6017626A JP 12335283 A JP12335283 A JP 12335283A JP 12335283 A JP12335283 A JP 12335283A JP S6017626 A JPS6017626 A JP S6017626A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- steam
- pipe
- combustor
- closed
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/232—Fuel valves; Draining valves or systems
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、石炭ガス化燃料など単位体積当りの発熱量の
低い燃料を燃焼の停止後に燃料配管中に残留している燃
料を安全に放出する方法に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention is a method for safely releasing fuel remaining in a fuel pipe after combustion of a fuel with a low calorific value per unit volume, such as coal gasified fuel, is stopped. It is about the method.
第１図は一般的な石炭ガス化発電プラントの系統を示し
た図である。１は石炭ガス化炉、２は発生ガスの浄化装
置である。燃料浄化装置２．がら出たガスは燃料調整弁
３を通って、ガスタービンの燃焼器４へ導かれる。５は
ガスタービンのコンプレッサ、６はタービンである。ガ
スタービンコンプレッサ５からめ高圧空気は燃焼器４へ
入りここでガス化燃料と混合し燃焼、高温のガスを発生
する。高温ガスはタービン６へ入り、動力を発生させた
あと廃熱回収ボイラ７へ入り、蒸気を発生させた後、煙
突から排出される。発熱ボイラ７で発生した水蒸気は蒸
気タービン８へ導かれ、ここでそのエネルギーが動力に
転換される。FIG. 1 is a diagram showing the system of a typical coal gasification power plant. 1 is a coal gasification furnace, and 2 is a purification device for generated gas. Fuel purification device 2. The discharged gas passes through a fuel regulating valve 3 and is led to a combustor 4 of the gas turbine. 5 is a gas turbine compressor, and 6 is a turbine. High pressure air from the gas turbine compressor 5 enters the combustor 4 where it is mixed with gasified fuel and combusted to generate high temperature gas. The high-temperature gas enters the turbine 6, generates power, and then enters the waste heat recovery boiler 7, generates steam, and then is discharged from the chimney. Steam generated in the heat generating boiler 7 is guided to a steam turbine 8, where its energy is converted into power.
このような石炭ガス化発電プラントにおいて、石炭ガス
化炉から発生するガスは、石炭のガス化剤として使われ
る空気中の窒素ガスあるいは石炭の一部燃焼によって発
生する二酸化炭素などの不活性ガスが含まれているため
、天然ガスなどの高カロリーガスに比べ、単位体積当り
の発熱量が１／１０〜１／３と低い低力口１１−あるい
は中カロリーガスとなる。In such coal gasification power plants, the gas generated from the coal gasifier is either nitrogen gas in the air used as a coal gasifying agent or inert gases such as carbon dioxide generated by partial combustion of coal. Because of this, the calorific value per unit volume is 1/10 to 1/3 lower than that of high-calorie gases such as natural gas, making it a low-power or medium-calorie gas.
表は空気酸化方式により発生する低カロリーガスの代表
的な発熱量の値と、単位発熱量当りの体積の値を高カロ
リーである天然ガスと比較して示したものである。The table shows typical calorific values and volume values per unit calorific value of low-calorie gas generated by air oxidation in comparison with high-calorie natural gas.
表
低カロリーガスの場合には、高カロリーガスに比べ、単
位発熱量当りの体積が約１０倍となる。In the case of a low-calorie gas, the volume per unit calorific value is about 10 times that of a high-calorie gas.
単位発熱量当りの体積の大きい燃料を使用する第１図に
示すような発′屯装置においては、そのため燃料の送出
管９は天然ガス使用の場合に比゛べ、径の太いものとな
る。このように送出管の径が太くなると、発電プラント
停止のため、燃料調整弁を閉じたとき、調整弁から燃料
ノズルまでの配管中に残存する燃料の量は天然ガスの場
合に比べきわめて葉の多いものとなる。In a generator as shown in FIG. 1 which uses a fuel having a large volume per unit calorific value, the fuel delivery pipe 9 has a larger diameter than when natural gas is used. When the diameter of the delivery pipe increases in this way, when the fuel regulating valve is closed to stop the power plant, the amount of fuel remaining in the pipe from the regulating valve to the fuel nozzle is extremely small compared to the case of natural gas. There will be many.
一般にガス燃料を燃焼させるノズルは常時開口している
から燃料送出管中に残存した多量二のガスはこの開口部
を通じて燃焼器中に拡散していくとともに、坂＋４焼器
内の空気は逆に燃料送出管中に拡散混合してくる。この
よりに燃料と空気の混合気が出来、それが！沢られた空
間内に放置さ７しることは安全上問題がある。そのため
このような燃焼装置においては、その停止直後等に窒素
ガスを用いて、残留態別を燃焼器中に強制損出するパー
ジという処置をほどこすのが一般である。Generally, the nozzle that burns gas fuel is always open, so a large amount of gas remaining in the fuel delivery pipe diffuses into the combustor through this opening, and the air inside the slope + 4 burner is reversed. It diffuses and mixes into the fuel delivery pipe. This creates a mixture of fuel and air, and that's it! It is a safety problem to leave it in a flooded space. For this reason, in such a combustion apparatus, it is common to use nitrogen gas immediately after the combustion apparatus is stopped to perform a purge process in which the residual fraction is forcibly lost into the combustor.
しか１．なから石炭ガス化燃料などを使用する場合には
前記の如く、残留態別が多くなるため、そのパージに使
用する窒素ガスは天然ガスの場合などと比べ極めて多）
１ｉに必−波となる。Only 1. As mentioned above, when coal gasified fuel is used, there are many residual fractions, so the amount of nitrogen gas used for purging is extremely large compared to when using natural gas.)
It becomes a necessary wave in 1i.
不発、明の目的はこのような燃料送出管内のパージにお
いで、使用する窒素ガスの使用鼠を低減する経済的なパ
ージ法を提４＋、することにある。The purpose of the present invention is to provide an economical purging method that reduces the amount of nitrogen gas used in purging such fuel delivery pipes.
〔発明の１１メ敷〕
本発明は、％’！’、利を燃焼さ−（トる燃焼器と、該
燃焼器に燃料を送る燃料送出管と燃料流２足を調整する
弁とを有する装置におい−Ｃ，該燃料調ｖｊ「と該燃バ
ト７器を扶続する送出管内に残留」る燃料を、燃焼器に
つながる蒸気発生器の残留蒸気により）く−ジすること
を特徴とするものである。[Eleven points of the invention] The present invention is based on %'! ', in a device that has a combustor that burns the fuel, a fuel delivery pipe that sends fuel to the combustor, and a valve that adjusts the two fuel flows; The fuel remaining in the delivery pipe that connects the combustor to the combustor is removed by residual steam from the steam generator connected to the combustor.
第２図は本発明のパージ法を示した図である。 FIG. 2 is a diagram showing the purging method of the present invention.
３は燃料調整弁、４は燃焼器、７は燃焼器４につながる
発熱ボイラである。９は燃料送出管、１０は燃料ノズル
を示す。3 is a fuel adjustment valve, 4 is a combustor, and 7 is a heat generating boiler connected to the combustor 4. Reference numeral 9 indicates a fuel delivery pipe, and 10 indicates a fuel nozzle.
廃熱ボイラ７の伝熱管１０から燃料送出管９の燃料調整
弁３の下流直後に蒸気を送る蒸気（ｇｌｌと蒸気の通過
、停止を調整する止弁１２が設けである。A stop valve 12 is provided for sending steam from the heat transfer pipe 10 of the waste heat boiler 7 to just downstream of the fuel adjustment valve 3 of the fuel delivery pipe 9 to adjust the passage and stop of the steam.
通常の運転では燃焼器４で発生したガスはタービン（図
示してない）および廃熱ボイラ７を通り排出きれる。廃
熱ボイラ７では伝熱管１０内で発生した蒸気は蒸気ター
ビン（図示してない）などに送気される。蒸気止弁１２
は通常の運転では閉じてあり、蒸気管ｌｌ内には蒸気は
流れている。In normal operation, gases generated in the combustor 4 are exhausted through a turbine (not shown) and a waste heat boiler 7. In the waste heat boiler 7, steam generated within the heat transfer tubes 10 is sent to a steam turbine (not shown) or the like. Steam stop valve 12
is closed during normal operation, and steam flows in the steam pipe ll.
このような装置において、運転を停止する場合には、燃
料調整弁３を閉じるが、燃料送出管９内には燃料が残留
する。そのため、燃料調整弁３閉、燃・腕停止の泊′爾
に蒸気止弁１２を開と（，２、発熱ボイラ７内に残留す
る蒸気の一部を燃料排出管９に送り燃料送出管の燃料を
燃焼器４内に排出する。In such a device, when the operation is stopped, the fuel adjustment valve 3 is closed, but fuel remains in the fuel delivery pipe 9. Therefore, when the fuel adjustment valve 3 is closed and the fuel arm is stopped, the steam stop valve 12 is opened. Fuel is discharged into the combustor 4.
燃料送出に必要な蒸気駿が燃料送気管に送られ、パージ
が完了すると蒸気１１・、弁１２を閉め、ツク−ジを完
了させる。Steam necessary for fuel delivery is sent to the fuel air pipe, and when the purge is completed, the steam 11 and valve 12 are closed to complete the purge.
本発明によ７１ば、運転停車後に発熱ボイラなどに残留
する蒸気を有効に活用できるので、窒素ガスを用いる場
合に比べ特別な窒素の貯蔵や供給設備を不用とするうえ
、市価な窒素を使用しなくてすむため、極めて経済的な
パージが可能となる。According to the present invention, it is possible to effectively utilize the steam remaining in a heat generating boiler etc. after the operation is stopped, so compared to the case where nitrogen gas is used, special nitrogen storage and supply equipment is not required, and in addition, commercially available nitrogen can be used. This makes it possible to perform extremely economical purging.
第１図は石炭ガス化して発ｉ’Ｑ；するガス化発電プラ
ントの系統図、第２図は本発明の一実施例の系統図であ
る。
３・・・燃料調整弁、４・・・燃焼器、７・・・発熱ボ
イラ、光（図
５Ｔ］２図FIG. 1 is a system diagram of a gasification power plant that gasifies coal to generate i'Q;, and FIG. 2 is a system diagram of an embodiment of the present invention. 3...Fuel adjustment valve, 4...Combustor, 7...Heating boiler, light (Figure 5T) Figure 2
Claims (1)
燃料送出管と燃料流量を調整する弁とを有する装置にお
いて、該燃料調整弁と該燃焼器を接続する送出管内に残
留する燃料を、燃焼器につながる蒸気発生器の残留蒸気
によりパージすることを特徴とする燃料パージ法。1. In a device having a combustor that burns fuel, a fuel delivery pipe that sends fuel to the combustor, and a valve that adjusts the fuel flow rate, the fuel that remains in the delivery pipe that connects the fuel adjustment valve and the combustor A fuel purging method characterized by purging with residual steam from a steam generator connected to a combustor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12335283A JPS6017626A (en) | 1983-07-08 | 1983-07-08 | Purging of fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12335283A JPS6017626A (en) | 1983-07-08 | 1983-07-08 | Purging of fuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6017626A true JPS6017626A (en) | 1985-01-29 |
Family
ID=14858442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12335283A Pending JPS6017626A (en) | 1983-07-08 | 1983-07-08 | Purging of fuel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6017626A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0939220A1 (en) * | 1998-02-26 | 1999-09-01 | Abb Research Ltd. | Method for safely removing liquid fuel out of a gas turbine fuel system and device for carrying out the method |
| WO1999054610A1 (en) * | 1998-04-17 | 1999-10-28 | Pratt & Whitney Canada Corp. | Anti-coking fuel injector purging device |
| EP0952317A3 (en) * | 1998-04-21 | 2002-04-17 | Mitsubishi Heavy Industries, Ltd. | Purging system for a gas turbine fuel supply |
| CN102777270A (en) * | 2012-08-08 | 2012-11-14 | 长沙众强科技开发有限公司 | Control system and control method of residual fuel burning in supply pipeline of gas generator set |
| JP2013104427A (en) * | 2011-11-10 | 2013-05-30 | General Electric Co <Ge> | System for purging gas fuel circuit for gas turbine engine |
| US8500443B2 (en) | 2008-03-25 | 2013-08-06 | Ihi Corporation | Method and device for purging gas production furnace |
| JP2013174239A (en) * | 2012-02-27 | 2013-09-05 | General Electric Co <Ge> | Fuel purging system for turbine assembly |
| JP2013234804A (en) * | 2012-05-09 | 2013-11-21 | Miura Co Ltd | Combustion apparatus |
-
1983
- 1983-07-08 JP JP12335283A patent/JPS6017626A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0939220A1 (en) * | 1998-02-26 | 1999-09-01 | Abb Research Ltd. | Method for safely removing liquid fuel out of a gas turbine fuel system and device for carrying out the method |
| US6256975B1 (en) | 1998-02-26 | 2001-07-10 | Abb Research Ltd. | Method for reliably removing liquid fuel from the fuel system of a gas turbine, and a device for carrying out the method |
| CN1115474C (en) * | 1998-02-26 | 2003-07-23 | 阿尔斯通公司 | Method and device for reliable draining liquid fuel from gas turbine fuel system |
| WO1999054610A1 (en) * | 1998-04-17 | 1999-10-28 | Pratt & Whitney Canada Corp. | Anti-coking fuel injector purging device |
| EP0952317A3 (en) * | 1998-04-21 | 2002-04-17 | Mitsubishi Heavy Industries, Ltd. | Purging system for a gas turbine fuel supply |
| US8500443B2 (en) | 2008-03-25 | 2013-08-06 | Ihi Corporation | Method and device for purging gas production furnace |
| JP2013104427A (en) * | 2011-11-10 | 2013-05-30 | General Electric Co <Ge> | System for purging gas fuel circuit for gas turbine engine |
| JP2013174239A (en) * | 2012-02-27 | 2013-09-05 | General Electric Co <Ge> | Fuel purging system for turbine assembly |
| JP2013234804A (en) * | 2012-05-09 | 2013-11-21 | Miura Co Ltd | Combustion apparatus |
| CN102777270A (en) * | 2012-08-08 | 2012-11-14 | 长沙众强科技开发有限公司 | Control system and control method of residual fuel burning in supply pipeline of gas generator set |
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