JP3046854B2 - Coal-fired combined cycle power plant - Google Patents
Coal-fired combined cycle power plantInfo
- Publication number
- JP3046854B2 JP3046854B2 JP12749191A JP12749191A JP3046854B2 JP 3046854 B2 JP3046854 B2 JP 3046854B2 JP 12749191 A JP12749191 A JP 12749191A JP 12749191 A JP12749191 A JP 12749191A JP 3046854 B2 JP3046854 B2 JP 3046854B2
- Authority
- JP
- Japan
- Prior art keywords
- coal
- exhaust gas
- gas
- air
- drying
- 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
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]
-
- 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]
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は石炭焚複合発電設備、詳
しくはその石炭粉砕・乾燥設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coal-fired combined cycle power plant, and more particularly, to a coal crushing and drying plant.
【０００２】[0002]
【従来の技術】従来の複合発電設備等に用いる石炭ガス
化設備の例を図２に示す。石炭０６は、石炭粉砕・乾燥
供給装置０５にて粉砕、乾燥される。乾燥用熱源として
は、空気昇圧ファン０１にて昇圧された空気が、空気管
０２を通り、熱風発生炉０３にて、燃料０４の燃焼熱に
て昇温され使用される。石炭０６は、供給管０７を経て
ガス化炉０８にてガス化され、ガス管０９を通り、ガス
精製設備に供給され、これを発電設備等の動力源として
いた。2. Description of the Related Art FIG. 2 shows an example of a conventional coal gasification facility used for a combined cycle power generation facility or the like. The coal 06 is pulverized and dried in the coal pulverizing / drying supply device 05. As the heat source for drying, the air pressurized by the air pressurizing fan 01 passes through the air pipe 02, is heated in the hot air generating furnace 03 by the heat of combustion of the fuel 04, and is used. Coal 06 was gasified in a gasification furnace 08 via a supply pipe 07, supplied to a gas purification facility via a gas pipe 09, and used as a power source for power generation facilities and the like.
【０００３】[0003]
【発明が解決しようとする課題】上記従来の石炭ガス化
設備には解決すべき次の課題があった。The above conventional coal gasification facility has the following problems to be solved.
【０００４】即ち、従来の設備では石炭乾燥用に別置の
熱風発生炉が必要で、設備が複雑化するという問題があ
った。That is, the conventional equipment requires a separate hot-air generator for drying coal, and has a problem that the equipment is complicated.
【０００５】また、熱源として余分な燃料が必要とな
り、その燃料は灰処理等の煩雑さをさけるため、ガス、
油等高価な燃料を用いることとなって発電コストの悪化
をまねくという問題があった。[0005] Further, an extra fuel is required as a heat source.
There is a problem in that expensive fuel such as oil is used, which leads to deterioration of power generation cost.
【０００６】本発明は、上記従来設備の問題点を解消し
た、熱風発生炉や余分な燃料の投入を必要としない、高
効率の石炭焚複合発電設備を提供することを目的とする
ものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a high-efficiency coal-fired combined cycle power plant which solves the above-mentioned problems of the conventional facilities and does not require a hot-air generator or the addition of extra fuel. .
【０００７】[0007]
【課題を解決するための手段】本発明は上記課題の解決
手段として、石炭を粉砕乾燥して石炭ガス化炉にてガス
化し、そのガスを燃焼させて得た燃焼ガスをガスタービ
ンの動力源となし、次いでその排ガスにより排ガスボイ
ラで発生させた蒸気を蒸気タービンの動力源となす石炭
焚複合発電設備において、上記排ガスボイラの途中より
抽出した排ガスにより空気を加熱可能に設けられた熱交
換器と、同熱交換器にて加熱された空気を用いて石炭を
乾燥する石炭乾燥手段とを具備してなることを特徴とす
る石炭焚複合発電設備を提供しようとするものである。According to the present invention, as a means for solving the above-mentioned problems, a combustion gas obtained by pulverizing and drying coal, gasifying it in a coal gasifier, and burning the gas is used as a power source for a gas turbine. Then, in a coal-fired combined cycle power plant that uses the steam generated in the exhaust gas boiler by the exhaust gas as a power source of a steam turbine, a heat exchanger provided so that air can be heated by exhaust gas extracted from the middle of the exhaust gas boiler And a coal drying unit for drying coal using air heated by the heat exchanger.
【０００８】[0008]
【作用】本発明は上記のように構成されるので次の作用
を有する。The present invention is configured as described above and has the following effects.
【０００９】即ち、燃料ガス用の石炭を乾燥させる必要
のある石炭焚複合発電設備において、排ガスボイラの途
中より抽出した排ガスにより空気を加熱可能に熱交換器
を設け、その熱交換器を通して加熱した空気を石炭乾燥
手段に送って石炭を乾燥するので、排ガスボイラにて蒸
気発生を果たした、ないしは果たしつつある、大気へ放
出直前のエネルギーレベルの低い排気ガス（約３００
℃）を利用して石炭を乾燥することができ、発電設備と
しての発電効率を損なうことがない。That is, in a coal-fired combined cycle power plant that needs to dry coal for fuel gas, the exhaust gas boiler is used.
Heatable heat exchanger air provided by the extracted flue gas from the in, because the air heated through the heat exchanger for drying the coal is sent to a coal drying means, distilled at exhaust gas boiler
Played a vapor generator, or is being played, low exhaust gas energy level immediately before release to the atmosphere (approximately 300
° C) to dry the coal, without impairing the power generation efficiency as a power generation facility.
【００１０】又、従来のように、別に熱風発生炉を必要
とせず、そのための燃焼装置等の複雑な設備や、それの
燃料に用いる、ガス、油が不要となる。Further, unlike the prior art, there is no need for a separate hot-air generating furnace, so that complicated equipment such as a combustion device and gas and oil used for the fuel are not required.
【００１１】又、石炭を乾燥する媒体は、燃焼ガスをそ
のまま用いるのではなく、熱交換器にて加熱された空気
なので、この加熱された空気はクリーンであり、石炭に
よって得られるガスにダストや硫酸成分が混入しない。[0011] The medium for drying the coal is the combustion gas.
Since the air is not used as it is but is heated by the heat exchanger, the heated air is clean, and dust and sulfuric acid components do not mix into the gas obtained from coal.
【００１２】[0012]
【実施例】本発明の一実施例に係る石炭ガス化複合発電
設備を図１により説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An integrated coal gasification combined cycle power plant according to one embodiment of the present invention will be described with reference to FIG.
【００１３】図１は本実施例の構成を示すブロック図
で、図において、石炭１８は、石炭粉砕乾燥供給装置１
６にて、乾燥空気管１５からの高温空気により乾燥さ
れ、供給管１７を経て、石炭ガス化炉１に供給されガス
化される。ガス化生成ガスは、ガス管２を通りガスクー
ラ３にて減温され、ガス精製装置４に送られ、ダスト、
硫黄分が除去される。精製されたガスはガスタービン用
の燃焼器５にて燃焼し、ガスタービン６にて発電する。
ガスタービン６出口の排ガスは、排ガスボイラ７に導入
され、顕熱が回収され、蒸気８を発生する。蒸気８は蒸
気タービン９に導入され、発電を行ない、復水器１０を
経て排ガスボイラ７の給水となり、再び蒸気８化を繰返
す。排ガスボイラ７からの抽気排ガスは制御ダンパ１２
にて量を調整した後、ガス空気熱交換器１３にて熱交換
後、排ガスボイラ７出口の排ガスとともに、煙突１１よ
り排出される。FIG. 1 is a block diagram showing the configuration of the present embodiment. In FIG.
At 6, it is dried by the high-temperature air from the drying air pipe 15, and supplied to the coal gasifier 1 via the supply pipe 17 to be gasified. The gasification product gas passes through the gas pipe 2, is cooled by the gas cooler 3, sent to the gas purification device 4, and contains dust,
The sulfur content is removed. The purified gas is burned in a gas turbine combustor 5 and is generated in a gas turbine 6.
The exhaust gas at the outlet of the gas turbine 6 is introduced into an exhaust gas boiler 7 where sensible heat is recovered and steam 8 is generated. The steam 8 is introduced into a steam turbine 9, performs power generation, passes through a condenser 10, serves as water for the exhaust gas boiler 7, and is again turned into steam 8. Bleed exhaust gas from the exhaust gas boiler 7 is supplied to a control damper 12.
After the amount is adjusted in, the heat is exchanged in the gas-air heat exchanger 13 and then discharged from the chimney 11 together with the exhaust gas from the exhaust gas boiler 7 outlet.
【００１４】石炭乾燥用空気は空気昇圧ファン１４にて
大気より昇圧されガス空気熱交換器１３にて昇温され、
高温空気制御ダンパ１９及び低温空気制御ダンパ２０に
て、流量、温度を、石炭粉砕乾燥供給装置１６に必要な
量と温度に制御した後、乾燥空気管１５を通して上述の
通り石炭乾燥用に石炭粉砕乾燥供給装置１６へ供給され
る。The air for coal drying is pressurized from the atmosphere by an air pressure fan 14 and heated by a gas-air heat exchanger 13.
After controlling the flow rate and temperature to the amount and temperature required for the coal crushing and drying supply device 16 by the high temperature air control damper 19 and the low temperature air control damper 20, the coal crushing is performed through the drying air pipe 15 for coal drying as described above. It is supplied to the drying supply device 16.
【００１５】ガスタービンコンプレッサ６ａ出口の高圧
空気は、昇圧コンプレッサ２１により昇圧後、ガス化剤
として、石炭ガス化炉１に投入される。After the high-pressure air at the outlet of the gas turbine compressor 6a is pressurized by the pressurizing compressor 21, it is charged into the coal gasifier 1 as a gasifying agent.
【００１６】以上、石炭ガス化複合発電の場合について
の実施例について説明したが本発明は、加圧流動床複合
発電や石炭直焚複合発電といった、いわゆる石炭焚複合
発電設備で、石炭を粉砕、乾燥して利用する設備全般に
適用可能である。The embodiment of the present invention in the case of combined gasification combined cycle power generation has been described above. However, the present invention relates to a so-called combined coal-fired combined cycle power generation facility such as a pressurized fluidized-bed combined cycle power generation and a coal-fired combined cycle power generation. It is applicable to all equipment that is used after drying.
【００１７】以上の通り本実施例によればガスタービン
６にて先ず主要なエネルギ利用を果たし、次いで排ガス
ボイラ７にて蒸気発生を果たした、ないしは果たしつつ
ある排ガスを抽出して、ガス空気熱交換器１３に投入、
そこで空気昇圧ファン１４によって送られて来た空気を
加熱して、その空気により、石炭粉砕乾燥供給装置１６
で石炭１８を乾燥するので、煙突１１から大気放出直前
の抽気排ガスを石炭乾燥に利用することとなり、ガスタ
ービン６、蒸気タービン９での出力低下を生じないとい
う利点がある。As described above, according to the present embodiment, the gas turbine 6 first uses the main energy, and then the exhaust gas boiler 7 generates or is performing the generation of the steam to extract the exhaust gas. Put into exchanger 13,
Then, the air sent by the air pressure rising fan 14 is heated, and the air is used to heat the coal
Since the coal 18 is dried in this way, the extracted exhaust gas immediately before being released from the chimney 11 to the atmosphere is used for coal drying, and there is an advantage that the output of the gas turbine 6 and the steam turbine 9 does not decrease.
【００１８】また、従来のように熱風発生炉等を別に設
ける必要がないので発電設備としてのコストを低下でき
るという利点がある。Further, since there is no need to separately provide a hot-air generating furnace or the like as in the related art, there is an advantage that the cost as a power generation facility can be reduced.
【００１９】また、従来のように別に設けた熱風発生炉
に燃料として用いるガスや油を必要としないので発電設
備としての綜合効率が向上するという利点がある。In addition, since gas or oil used as fuel is not required for a separately provided hot air generating furnace as in the prior art, there is an advantage that the overall efficiency as a power generation facility is improved.
【００２０】また、従来のように熱風発生炉やそれに伴
う複雑な設備が不要となるので発電設備全体が単純化さ
れ、点検整備費、部品交換費、炉の運転用員費等全般に
わたる維持費が低減するという利点がある。Further, since a hot-air generating furnace and complicated equipment associated therewith are not required as in the prior art, the entire power generation equipment is simplified, and maintenance costs such as inspection and maintenance costs, parts replacement costs, furnace operating personnel costs, etc. Is advantageously reduced.
【００２１】[0021]
【発明の効果】本発明は上記のように構成されるので次
の効果を有する。The present invention has the following effects because it is configured as described above.
【００２２】即ち、従来のように発電設備外に、石炭乾
燥用の熱源を求めることなく、発電設備でその主たる部
分を利用した投棄直前の低レベルの排ガスの熱を石炭乾
燥に利用するので石炭焚複合発電設備の効率向上及び発
電コストの低減が達成される。That is, unlike the conventional method, the heat of the low-level exhaust gas immediately before dumping using the main part of the power generation facility is used for coal drying without requiring a heat source for drying the coal outside the power generation facility. The efficiency of the combined-fired power plant is improved and the power generation cost is reduced.
【００２３】また、熱風発生炉廃止により、設備が簡単
化する。また、乾燥媒体として従来のように燃焼ガスを
用いずクリーンな高温空気を使用するので、石炭の粉砕
・乾燥系でのトラブルが防止でき、かつ、生成ガスにダ
ストや硫黄成分が混入せず、信頼性が向上する。Also, the elimination of the hot-air generating furnace simplifies the equipment. In addition, since clean high-temperature air is used as a drying medium without using a combustion gas as in the past, troubles in the coal crushing and drying system can be prevented, and dust and sulfur components are not mixed into the generated gas, Reliability is improved.
【図１】本発明の一実施例に係る石炭ガス化複合発電設
備の構成ブロック図である。FIG. 1 is a configuration block diagram of an integrated coal gasification combined cycle power plant according to one embodiment of the present invention.
【図２】従来の石炭ガス化設備のブロック図である。FIG. 2 is a block diagram of a conventional coal gasification facility.
１ 石炭ガス化炉 ２ ガス管 ３ ガスクーラ ４ ガス精製装置 ５ 燃焼器 ６ ガスタービン ７ 排ガスボイラ ９ 蒸気タービン １３ ガス空気熱交換器 １４ 空気昇圧ファン １６ 石炭粉砕乾燥供給装置 ２１ 昇圧コンプレッサ DESCRIPTION OF SYMBOLS 1 Coal gasifier 2 Gas pipe 3 Gas cooler 4 Gas refiner 5 Combustor 6 Gas turbine 7 Exhaust gas boiler 9 Steam turbine 13 Gas air heat exchanger 14 Air booster fan 16 Coal crushing and drying supply device 21 Step-up compressor
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−175241（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) F02C 3/26 F01K 23/10 F02C 6/18 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-175241 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) F02C 3/26 F01K 23/10 F02C 6 / 18
Claims (1)
ス化し、そのガスを燃焼させて得た燃焼ガスをガスター
ビンの動力源となし、次いでその排ガスにより排ガスボ
イラで発生させた蒸気を蒸気タービンの動力源となす石
炭焚複合発電設備において、上記排ガスボイラの途中よ
り抽出した排ガスにより空気を加熱可能に設けられた熱
交換器と、同熱交換器にて加熱された空気を用いて石炭
を乾燥する石炭乾燥手段とを具備してなることを特徴と
する石炭焚複合発電設備。Claims: 1. Coal is pulverized and dried, gasified in a coal gasifier, and the combustion gas obtained by burning the gas is used as a power source of a gas turbine, and then steam generated by the exhaust gas in an exhaust gas boiler. In a coal-fired combined cycle power plant that uses as a power source of a steam turbine, a heat exchanger provided so as to be able to heat air by exhaust gas extracted from the middle of the exhaust gas boiler , and heated by the heat exchanger And a coal drying unit for drying coal using the air obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12749191A JP3046854B2 (en) | 1991-05-30 | 1991-05-30 | Coal-fired combined cycle power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12749191A JP3046854B2 (en) | 1991-05-30 | 1991-05-30 | Coal-fired combined cycle power plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04353226A JPH04353226A (en) | 1992-12-08 |
| JP3046854B2 true JP3046854B2 (en) | 2000-05-29 |
Family
ID=14961274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12749191A Expired - Fee Related JP3046854B2 (en) | 1991-05-30 | 1991-05-30 | Coal-fired combined cycle power plant |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3046854B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5030750B2 (en) | 2007-11-30 | 2012-09-19 | 三菱重工業株式会社 | Coal gasification combined power generation facility |
| JP5142201B2 (en) * | 2008-01-18 | 2013-02-13 | 一般財団法人電力中央研究所 | Zeolite production equipment and power generation equipment |
| JP2012233073A (en) * | 2011-04-28 | 2012-11-29 | Mitsubishi Heavy Ind Ltd | Fluidized bed drying facility, and gasification combined power generation system using coal |
-
1991
- 1991-05-30 JP JP12749191A patent/JP3046854B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04353226A (en) | 1992-12-08 |
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