JPS6153400B2 - - Google Patents
Info
- Publication number
- JPS6153400B2 JPS6153400B2 JP55135164A JP13516480A JPS6153400B2 JP S6153400 B2 JPS6153400 B2 JP S6153400B2 JP 55135164 A JP55135164 A JP 55135164A JP 13516480 A JP13516480 A JP 13516480A JP S6153400 B2 JPS6153400 B2 JP S6153400B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- turbine
- power generation
- coal
- temperature
- 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
Links
- 239000000428 dust Substances 0.000 claims description 21
- 239000003245 coal Substances 0.000 claims description 19
- 238000002309 gasification Methods 0.000 claims description 16
- 238000010248 power generation Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000012717 electrostatic precipitator Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- 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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Description
【発明の詳細な説明】
本発明は石炭ガス化複合発電方式、特にその効
率の向上に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coal gasification combined cycle power generation system, particularly to improving the efficiency thereof.
近年における深刻な石油事情に対処するため、
石油に代る化石燃料として豊富な石炭の活用が叫
ばれており、石炭火力の推進は電力事業にとつて
緊急の命題となりつつある。ところで石炭火力の
場合石炭の生焚が従来広く行われているが、この
方式の熱効率は周知のように約36〜37％（送電端
効率）程度であつて、これ以上の効率向上には大
きな期待をかけられないのが現状である。 In order to deal with the serious oil situation in recent years,
There are calls for the use of abundant coal as a fossil fuel to replace oil, and the promotion of coal-fired power generation is becoming an urgent imperative for the electric power industry. By the way, in the case of coal-fired power generation, raw coal combustion has traditionally been widely used, but as is well known, the thermal efficiency of this method is around 36 to 37% (transmission net efficiency), and it is difficult to improve efficiency further. The current situation is that we cannot have high expectations.
そこで最近石炭ガス化複合発電方式、即ち第１
図に示す概略系統図のように、粉砕機ａからの粉
砕炭を用いてガス化炉ｂにより作られたガスを、
燃焼器ｃにより高温ガス化してガスタービンｄに
加えて発電したのち、その排熱エネルギを排熱ボ
イラｅによる熱交換により蒸気エネルギ化して、
例えばスチームタービンｆを駆動して発電する、
所謂石炭ガス化複合発電方式が提唱されている。
この方式はガスタービンのガス温度を高くするこ
とにより高効率化が可能であつて、例えばその熱
効率は42％以上にも達する。従つて生焚方式に比
して効率的に最も得策であり、しかも省エネルギ
への貢献も著しい。また環境対策面においても有
利である。 Recently, coal gasification combined cycle power generation system, i.e.
As shown in the schematic system diagram shown in the figure, the gas produced by the gasifier b using the crushed coal from the crusher a is
After converting it into high-temperature gas in the combustor c and adding it to the gas turbine d to generate electricity, the exhaust heat energy is converted into steam energy by heat exchange in the exhaust heat boiler e,
For example, driving a steam turbine f to generate electricity,
A so-called coal gasification combined cycle system has been proposed.
This system can achieve high efficiency by increasing the gas temperature of the gas turbine, and its thermal efficiency reaches, for example, 42% or more. Therefore, it is the most efficient method compared to the green-fired method, and it also makes a significant contribution to energy savings. It is also advantageous in terms of environmental measures.
しかしこの方式では石油を燃料とする場合に見
ることのできない、ガス化ガスの処理過程を必要
とする。このため石油による場合に比べて、その
分だけ熱効率の低下を生ずるのをまぬがれること
ができない。即ち石炭のガス化によつて得られた
ガス中には、多量の粉塵および硫黄分が含有され
ており、このままではガスタービンの燃料として
利用できない。そのため第１図中に示すように、
一旦サイクロンのような粉塵分離器ｇに通して粗
大粉塵を除去したのち、集塵装置例えば電気集塵
装置ｈを用いて除塵を行つたものを、脱硫装置ｉ
を介してガスタービンｄの燃焼器ｃに送給するこ
とが行われている。しかし一般に石炭ガス化炉出
口のガスは温度が1000℃以上、圧力が10Kg/cm2以
上の高温高圧である。従つて従来のイオン化線、
対向電極などからなる電気集塵装置では、イオン
化線その他要部部材の熱的損傷、或いは風速の大
なることにもとづく粉塵捕集効率の低下などによ
り、高性能の集塵が困難であり、また脱硫部の熱
的損傷を招く。従つてガス化されたガスの温度圧
力を集塵装置などの動作温度条件、能力などに合
わせて少なくとも500℃ぐらいまで低下すること
が必要となり、その低下量を充分回収しなけれ
ば、プラント効率を低下することになる。 However, this method requires a gasification process that cannot be done when using petroleum as fuel. For this reason, compared to the case of using petroleum, it is impossible to avoid a corresponding decrease in thermal efficiency. That is, the gas obtained by gasifying coal contains a large amount of dust and sulfur, and cannot be used as fuel for a gas turbine. Therefore, as shown in Figure 1,
After passing through a dust separator g such as a cyclone to remove coarse dust, the dust is removed using a dust collector such as an electrostatic precipitator h.
The gas is fed to the combustor c of the gas turbine d via the combustor c of the gas turbine d. However, the gas at the outlet of a coal gasifier is generally high temperature and high pressure, with a temperature of 1000°C or higher and a pressure of 10 kg/cm 2 or higher. Therefore, the conventional ionization line,
With electrostatic precipitators consisting of counter electrodes, it is difficult to achieve high performance dust collection due to thermal damage to ionization wires and other important components, or a decrease in dust collection efficiency due to high wind speeds. This will cause thermal damage to the desulfurization section. Therefore, it is necessary to reduce the temperature and pressure of the gasified gas to at least 500°C depending on the operating temperature conditions and capacity of the dust collector, etc., and if this reduced amount is not recovered sufficiently, the plant efficiency will be reduced. This will result in a decline.
本発明は上記のようなガス化ガスの高い熱、高
い圧力ポテンシヤルを有効に利用しながら、温度
などを集塵装置などの動作条件に一致させるよう
にし、しかもこれによりガス化側と発電側との独
立性を高めて、系統運用上の自由度を増すことが
できる、プラント効率の高い石炭ガス化複合発電
方法の提供を目的とするものである。次に図面を
用いてその詳細を説明する。 The present invention makes effective use of the high heat and high pressure potential of the gasification gas as described above, and matches the temperature etc. with the operating conditions of the dust collector, etc., and thereby allows the gasification side and the power generation side to The purpose of this project is to provide a highly efficient coal gasification combined cycle power generation method that can increase the independence of systems and increase the degree of freedom in system operation. Next, the details will be explained using the drawings.
本発明は石炭ガス化ガスのように高温かつ粉塵
を含有する燃料、所謂高温のダーテイ含有ガスの
もつ、高エネルギーを回収するための熱交換器を
ガス化炉の出力部に設けて、スチームタービン動
力として取出して発電することにより、従来の石
炭ガス化複合発電方式におけるより、より高い効
率をプラントに持たせることができるようにしな
がら、発電量の調節によりガス温度などを集塵装
置の動作条件に合わせるようにしたものである。 The present invention provides a steam turbine by installing a heat exchanger in the output section of the gasifier to recover the high energy of high-temperature and dust-containing fuel such as coal gasification gas, so-called high-temperature dirty gas. By extracting power as power and generating it, the plant can have higher efficiency than the conventional combined coal gasification combined cycle system, while adjusting the amount of power generated to adjust the operating conditions of the dust collector, such as gas temperature. It was designed to match.
第２図は本発明の一実施例系統図であつて、図
において１は石炭の粉砕機、２は乾燥器、３はガ
ス化炉、４はその灰処理装置、５はサイクロン集
塵器、６は集塵装置、７はその塵処理装置、８は
脱硫装置、９は大出力、高効率タービン部で、次
の各部から形成される。１０の燃焼器、１１は圧
縮機、１２はガスタービン、１３は発電機、１４
は中間空気冷却器である。１５は排熱ボイラ、１
６は高効率スチームタービン部で、次の各部から
形成される。１７は高圧タービン、１８は中圧タ
ービン、１９は発電機、２０は給水加熱器、２１
は復水器である。２２は本発明のために設けた熱
交換器、２３はスチームタービン、２４は発電機
である。なお２５は空気供給系統、２６は水また
は蒸気供給系統で、本発明のための熱回収用スチ
ームタービン２３としては、炭種による熱回収量
の変化により、容易に出力を変えうるものが使用
される。そして熱交換器２２にはサイクロン集塵
器５を介して、ガス化炉３からの高温高圧のガス
化ガスG1が送給されて発電が行われ、また発電
量の調整により集塵装置６などの動作条件に一致
するような温度などとする。一方その排ガスG2
は集塵装置６によつて除塵され、脱硫装置８によ
り脱硫されて精製され、そのガスG3は大出力、
高効率ガスタービン９、更にはスチームタービン
１６に加えられて発電が行われる。 FIG. 2 is a system diagram of one embodiment of the present invention, in which 1 is a coal crusher, 2 is a dryer, 3 is a gasifier, 4 is its ash processing device, 5 is a cyclone dust collector, 6 is a dust collector, 7 is its dust treatment device, 8 is a desulfurization device, and 9 is a high-output, high-efficiency turbine section, which is formed from the following parts. 10 combustors, 11 compressors, 12 gas turbines, 13 generators, 14
is an intermediate air cooler. 15 is a waste heat boiler, 1
6 is a high-efficiency steam turbine section, which is formed from the following parts. 17 is a high pressure turbine, 18 is an intermediate pressure turbine, 19 is a generator, 20 is a feed water heater, 21
is a condenser. 22 is a heat exchanger provided for the present invention, 23 is a steam turbine, and 24 is a generator. Note that 25 is an air supply system, and 26 is a water or steam supply system.The steam turbine 23 for heat recovery used in the present invention is one whose output can be easily changed by changing the amount of heat recovery depending on the type of coal. Ru. The heat exchanger 22 is supplied with the high-temperature, high-pressure gasified gas G 1 from the gasification furnace 3 via the cyclone dust collector 5 to generate electricity, and the dust collector 6 is also fed by adjusting the amount of power generation. The temperature shall be such that it matches the operating conditions such as. Meanwhile its exhaust gas G 2
The gas G3 is removed by the dust collector 6, desulfurized and purified by the desulfurizer 8, and the gas G3 has a high output.
It is added to the high-efficiency gas turbine 9 and further to the steam turbine 16 to generate electricity.
以上の説明から明らかなように、本発明では石
炭ガス化ガスのもつ、高い熱と圧力ポテンシヤル
を熱交換器を介してスチームタービン動力として
有効利用しながら、集塵装置の動作に必要とする
条件まで、ガス化ガスの温度などを合わせるよう
にしている。従つてそれだけ複合発電プラントの
熱効率を向上して省エネルギに貢献できる。また
２系統の発電系統が形成されることから、例えば
ガス化炉の出力ガスによつて発電するスチームタ
ービンの発電量を、所内動力や蓄電池の充電量に
振り向けることにより、負荷変動に容易に対応で
きるなど、系統運用上の自由度が大となる効果が
得られるもので、石炭ガス化複合発電システムの
実現に大きな推進力を与えるものである。 As is clear from the above description, in the present invention, the high heat and pressure potential of coal gasification gas is effectively utilized as steam turbine power through a heat exchanger, while meeting the conditions necessary for the operation of the dust collector. We are trying to match the temperature of the gasification gas until then. Therefore, it is possible to improve the thermal efficiency of the combined cycle power plant and contribute to energy saving. In addition, since two power generation systems are formed, for example, by allocating the power generated by the steam turbine that generates electricity using the output gas of the gasifier to the in-house power or the charging amount of the storage battery, it is possible to easily respond to load fluctuations. This has the effect of increasing the degree of freedom in system operation, such as the ability to adapt to various conditions, and will provide a major impetus to the realization of a coal gasification combined cycle power generation system.
第１図は石炭ガス化複合発電方式の概略系統
図、第２図は本発明の一実施例を示す系統図であ
る。
１……石炭の粉砕機、２……乾燥器、３……ガ
ス化炉、４……その灰処理装置、５……サイクロ
ン集塵器、６……集塵装置、７……その灰処理装
置、８……脱硫装置、９……大出力、高効率ター
ビン部、１０……燃焼器、１１……圧縮機、１２
……ガスタービン、１３……発電機、１４……中
間空気冷却器、１５……排熱ボイラ、１６……高
効率スチームタービン、１９……発電機、２０…
…給水加熱器、２１……復水器、２２……熱交換
器、２３……熱回収用スチームタービン、２４…
…発電機、２５……空気供給系統、２６……水ま
たは蒸気供給系統。
FIG. 1 is a schematic system diagram of a coal gasification combined cycle system, and FIG. 2 is a system diagram showing an embodiment of the present invention. 1... Coal crusher, 2... Dryer, 3... Gasifier, 4... Ash processing equipment, 5... Cyclone dust collector, 6... Dust collector, 7... Ash processing Device, 8... Desulfurization device, 9... High output, high efficiency turbine section, 10... Combustor, 11... Compressor, 12
... Gas turbine, 13 ... Generator, 14 ... Intermediate air cooler, 15 ... Exhaust heat boiler, 16 ... High efficiency steam turbine, 19 ... Generator, 20 ...
...Feed water heater, 21... Condenser, 22... Heat exchanger, 23... Steam turbine for heat recovery, 24...
... Generator, 25 ... Air supply system, 26 ... Water or steam supply system.
Claims (1)
部に熱交換装置を設けて、その熱回収蒸気出力に
より熱回収用スチームタービンを駆動して発電す
ると共に、その発電量を制御することにより熱交
換器出口のガス温度等を集塵装置等ガス精製過程
の最適処理条件となるように制御して、精製した
のち、そのガスをガスタービンとスチームタービ
ンなどよりなる複合発電部に導びき発電して、プ
ラント効率の向上を図ることを特徴とする石炭ガ
ス化複合発電方式。1. In coal gasification combined cycle power generation, a heat exchange device is installed at the outlet of the gasifier, and the heat recovery steam output is used to drive a heat recovery steam turbine to generate electricity, and the heat exchange is performed by controlling the amount of electricity generated. After purifying the gas by controlling the temperature of the gas at the outlet of the device to achieve the optimum processing conditions for the gas purification process, such as using a dust collector, the gas is led to a combined power generation unit consisting of a gas turbine and a steam turbine to generate electricity. , a coal gasification combined cycle system that is characterized by improving plant efficiency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55135164A JPS5759992A (en) | 1980-09-30 | 1980-09-30 | Compound electricity generation by coal gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55135164A JPS5759992A (en) | 1980-09-30 | 1980-09-30 | Compound electricity generation by coal gasification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5759992A JPS5759992A (en) | 1982-04-10 |
| JPS6153400B2 true JPS6153400B2 (en) | 1986-11-17 |
Family
ID=15145315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55135164A Granted JPS5759992A (en) | 1980-09-30 | 1980-09-30 | Compound electricity generation by coal gasification |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5759992A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01149566U (en) * | 1988-04-06 | 1989-10-17 | ||
| WO2012133549A1 (en) * | 2011-03-31 | 2012-10-04 | 三菱重工業株式会社 | Wet material supplying facility and gasification composite power generation system using wet material |
| JP2012214578A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Low-grade coal supplying facility and gasification composite power generation system using the low-grade coal |
| JP2012215326A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Fluidized bed drying facility and integrated gasification composite power generation system using fluidized bed drying facility |
| CN105569746A (en) * | 2016-01-28 | 2016-05-11 | 上海电力股份有限公司 | Ultralow-concentration gas oxidation power generation and coal slime drying, refrigeration and heating integration system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0662963B2 (en) * | 1989-12-26 | 1994-08-17 | 川崎製鉄株式会社 | Operating method of flammable gas generator |
-
1980
- 1980-09-30 JP JP55135164A patent/JPS5759992A/en active Granted
Non-Patent Citations (2)
| Title |
|---|
| GWF-GAS ERDGAS=1980 * |
| STAHL UND EISEN=1980 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01149566U (en) * | 1988-04-06 | 1989-10-17 | ||
| WO2012133549A1 (en) * | 2011-03-31 | 2012-10-04 | 三菱重工業株式会社 | Wet material supplying facility and gasification composite power generation system using wet material |
| JP2012214578A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Low-grade coal supplying facility and gasification composite power generation system using the low-grade coal |
| JP2012215326A (en) * | 2011-03-31 | 2012-11-08 | Mitsubishi Heavy Ind Ltd | Fluidized bed drying facility and integrated gasification composite power generation system using fluidized bed drying facility |
| CN105569746A (en) * | 2016-01-28 | 2016-05-11 | 上海电力股份有限公司 | Ultralow-concentration gas oxidation power generation and coal slime drying, refrigeration and heating integration system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5759992A (en) | 1982-04-10 |
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