CN107664046A - A kind of energy-saving activation system in IGCC power stations - Google Patents
A kind of energy-saving activation system in IGCC power stations Download PDFInfo
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- CN107664046A CN107664046A CN201710863515.8A CN201710863515A CN107664046A CN 107664046 A CN107664046 A CN 107664046A CN 201710863515 A CN201710863515 A CN 201710863515A CN 107664046 A CN107664046 A CN 107664046A
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- gas turbine
- waste heat
- heat boiler
- gas
- turbine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
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- 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
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas- turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/70—Application in combination with
- F05D2220/72—Application in combination with a steam turbine
- F05D2220/722—Application in combination with a steam turbine as part of an integrated gasification combined cycle
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- 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]
Abstract
A kind of energy-saving activation system in IGCC power stations, is connected with flare tower and is formed by coal gasification unit, air separation unit, gas turbine, gas turbine generator, afterburning blower fan, afterburner, waste heat boiler, steam turbine, steam turbine generator；When power station starts, start air separation unit and coal gasification unit first, then combustion-compensating device is sent into using synthesis gas caused by coal gasification unit to start waste heat boiler and turbine generating system, after gas turbine starts and switches to synthesis gas fuel, then combustion-compensating device is cut off and run；Relieve in conventional start-up course, waste heat boiler and steam turbine have to wait for the order limitation that gas turbine starts first, steam turbine can shift to an earlier date to be started in gas turbine, shorten full factory and start the time, and eliminated after gas turbine igniting during load up and wait steam turbine warming-up, red switch and grid-connected link, gas turbine load up and can carry out Fuel switching rapidly, and energy-saving effect is notable.
Description
Technical field
Type of the present invention is related to cleaning coal-fired power generator set field, more particularly to a kind of energy-saving activation system in IGCC power stations.
Background technology
IGCC (integrated gasification combined cycle plants) generation technology have passed through technological accumulation and practice for many years, running technology by
Gradually perfect, reliability is increased dramatically, and generating electricity in year can utilize hourage to be compared favourably with conventional coal-fired power plant.But
It is that the startup method in existing IGCC power stations is perfect not enough, start-up course elapsed time length, energy dissipation and start-up cost are inclined
Height is the outstanding problem in the start-up course of IGCC power stations.
On the one hand, to ensure the reliability in IGCC power stations, and the flexibility of total system is increased, IGCC is much adopted in power station
With independent motorized motions air separation unit, wherein the air compressor machine and supercharger of electronic space division system are the most important of IGCC power stations
Power consumption rich and influential family.And in the start-up course of IGCC power stations, it is necessary to first start space division system, when IGCC plant not yet generates electricity, electricity
Factory must meet the power consumption of air separation unit from power network power purchase, just can be space division list after whole factory's electricity generation system is stable
The power supply of member switches to station service.Therefore, if full factory start-up course is too slow, the power consumption of space division system can be caused to rise, increased
Add purchases strategies.On the other hand, in IGCC system, gas turbine, waste heat boiler and Steam Turbine are remaining into combined cycle system
The waste heat for generating steam that heat boiler is discharged fume using gas turbine is sent to steam turbine power generation, to start steam turbine, it is necessary to first to open
Dynamic gas turbine, steam turbine warming-up, red switch and grid-connected speed are slower, and this is crossed range request gas turbine and is maintained at underload etc.
Treat, and gas turbine needs to start using light diesel, after combustion engine load rises to about 55%~70% rated load
Synthesis gas fuel can be switched to, uses that the cost of light diesel is very high, and coordinates the process that steam turbine starts in gas turbine
In, because gas turbine is maintained at relatively low load, it is necessary to persistently use light diesel, the duration is grown, and fuel cost is very big.
Further, since gas turbine coordinates steam turbine to start, and it is longer in underload duration, cause gas turbine to delay to cut
Change synthesis gas fuel into, synthesis gas fuel can only send to flare tower and be vented burn-up in vain caused by gasification furnace, cause the wave of energy
Take.Comprehensive apparently the typical startup method in existing IGCC power stations, which exists, starts time length, and power consumption, fuel consumption be big and energy
Waste the problem of serious and start-up cost is too high.
The content of the invention
The defects of in order to overcome above-mentioned prior art, it is an object of the invention to propose, a kind of IGCC power stations are energy-saving to open
Dynamic system, shortens the startup time of the whole factory and power consumption of start-up course, fuel consumption and synthesis gas torch emptying amount, reduction are opened
Dynamic expense.
In order to achieve the above object, the technical scheme is that：
A kind of energy-saving activation system in IGCC power stations, including coal gasification unit 2, a coal powder entrance of coal gasification unit 2 and
Coal dust 1 connects, and the oxygen intake of coal gasification unit 2 connects with the oxygen outlet of air separation unit 3, and the air compressor machine 4 of air separation unit 3 enters
Mouthful the first air 5 of suction, the syngas outlet of coal gasification unit 2 is divided into three tunnels, and the first via is connected with flare tower 20, the second tunnel and
Afterburner 11 is connected, and the 3rd tunnel is connected with the combustion chamber of gas turbine 7；The air compressor machine entrance of gas turbine 7 sucks the second air
6, the entry of combustion chamber input light diesel 8 of gas turbine 7, the stiff shaft of gas turbine 7 is connected with gas turbine generator 13, combustion gas
First smoke evacuation 12 of turbine 7 connects with the flue entrance of waste heat boiler 14, and the second smoke evacuation 19 of waste heat boiler 14 is discharged into air；
The air intake of afterburner 11 connects with the outlet of afterburning blower fan 10, and the entrance of afterburning blower fan 10 sucks the 3rd air 9, mends
The outlet of burner 11 is connected with the flue entrance of waste heat boiler 14, and the feed-water intake of waste heat boiler 14 is connected with feed pipe 15, waste heat pot
The outlet of the superheated steam of stove 14 is connected with the steam inlet of steam turbine 17, and the exhaust steam of steam turbine 17 outlet 16 is connected to condensing system, steamer
The stiff shaft of machine 17 is connected with steam turbine generator 18.
Described air separation unit 3 is the independent air compressor machine using motorized motions.
Described gas turbine 7 is suitable for using the low-calorific-value gas turbine of synthesis gas, it is necessary to be opened using light diesel 8
Dynamic and load up to 55%~70% rated load can just switch to synthesis gas fuel.
Described waste heat boiler 14 is the waste heat boiler with fuel supplementing type, using external combustion-compensating device.
Described afterburning blower fan 10 and afterburner 11 form the combustion-compensating device of waste heat boiler 14, and combustion-compensating device uses coal gasification
As afterburning fuel, combustion-compensating device only uses the synthesis gas that unit 2 produces in the start-up course of IGCC power stations, normal in IGCC power stations
Combustion-compensating device is out of service after stable operation.
Described waste heat boiler 14 is started using synthesis gas afterburning immediately after the start completion of coal gasification unit 2,
Waste heat boiler 14 produces steam and drives steam turbine 17 to start, and drives steam turbine generator 18 to generate electricity.
The power consumption of described air separation unit 3, most start start when use power network power purchase, when steam turbine generator generating with
Afterwards, the power consumption of air separation unit 3 switches to station service.
A kind of startup method of described energy-saving activation system in IGCC power stations is：Start space division list from power network power taking first
Member 3, the air compressor machine 4 of air separation unit 3 utilize the driven by power of power network, after the stable production oxygen of air separation unit 3, to coal gasification unit
2, which provide oxygen, starts coal gasification unit 2；The oxygen that coal gasification unit 2 is sent using coal dust 1 and air separation unit 3 produces synthesis gas,
The starting stage synthesis gas yield that coal gasification unit 2 starts is unstable, and synthesis pneumatic transmission flare tower 20 does emptying burning processing；Treat coal
Synthesis pneumatic transmission afterburner 11 after gasification unit 2 is stable, at the same time start afterburning blower fan 10, afterburning blower fan suction the 3rd
Air 9 simultaneously provides combustion air to afterburner 11, and synthesis gas burning in burner 11 produces high-temperature flue gas and send waste heat boiler 14,
At the same time, feed pipe 15 is continuously available to water to waste heat boiler 14；Waste heat boiler 14 using afterburner 11 come high-temperature flue gas
Heating feedwater produces steam and is sent to steam turbine 17；Steam turbine 17 carries out red switch using steam caused by waste heat boiler 14 and drives vapour
The electricity generation grid-connecting of turbine generator 18, and with initial load warming-up；After warming-up terminates, according to synthesis gas yield, afterburning wind is stepped up
The load of machine 10, afterburner 11 and waste heat boiler 14, increase steam production, to step up the load of steam turbine 17, steamer
The generation load Synchronous lifting of generator 18；The power supply source of air separation unit 3 from power network power taking by switching to station service；Start combustion gas wheel
Machine 7, gas turbine 7 start red switch stage gas turbine generator 13 and used as motor, and gas turbine 7 is driven using station service
Air compressor machine rotate, the air compressor machine of gas turbine 7 suck the second air 6 be sent into combustion chamber, input light diesel 8 deliver to combustion chamber,
High temperature and high pressure flue gas caused by the ignition, combustion room of gas turbine 7 is used as combustion gas after turbine pit's expansion work of gas turbine 7
The flue of waste heat boiler 14 is delivered in first smoke evacuation 12 of turbine 7；After gas turbine 7 is lighted a fire successfully, supplied by adjusting light diesel 8
Carry out the revolution of regulating gas turbine 7 stabilization to 3000r/min to amount, gas turbine generator 13 is then changed into generator use and entered
Row electricity generation grid-connecting, the load of gas turbine 7 is gradually then lifted to Fuel switching can be carried out by lifting the quantity delivered of light diesel 8
Load；During the load of gas turbine 7 is gradually increasing, gas turbine 7 is sent to the stream of the first smoke evacuation 12 of waste heat boiler 14
Amount gradually increase, the load of afterburner 11 is at this moment gradually reduced, so that waste heat boiler 14 and the load of steam turbine 17 remain stable, coal
The unnecessary synthesis gas that gasification unit 2 is produced is vented by flare tower 20 to burn；It can carry out fuel when the load of gas turbine 7 rises to and cut
After the load changed, the operation of the Fuel switching of gas turbine 7 is carried out, the fuel of gas turbine 7 is switched to by light diesel 8 and synthesized
Gas, and the synthesis gas for being sent to afterburner 11 and flare tower 20 is gradually turned down until fully closed；Stop afterburning blower fan 10, afterburner 11 exits
Operation, now for waste heat boiler 14 completely by the drive of the first smoke evacuation 12 of gas turbine, the startup of full factory is completed in IGCC power stations.
Beneficial effects of the present invention are：
Sent out due to carrying out the afterburning of waste heat boiler 14 first with synthesis gas caused by coal gasification unit 2 to start steam turbine 17
Electricity, restart the start-up course of gas turbine 7, restart waste heat boiler 14 and vapour compared to traditional first startup gas turbine 7
The process that turbine 7 generates electricity, there is overall startup duration to shorten, save power plant's purchase of electricity, reduce light diesel usage amount and subtract
The characteristics of few synthesis gas torch emptying amount, energy-saving effect is notable, and the payment for initiation for being greatly saved IGCC power stations is used, and improves electricity
The economic benefit of factory.By taking the IGCC power stations of a 300MW capacity as an example, full factory cold start every time, when can integrally shorten startup
Between 3 hours, reduce synthesis gas flare tower and be vented about 400,000 Nm3, reduce gas turbine consumption light diesel about 30t, save and start
About 530,000 yuan of expense.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
The Booting sequence figure of Fig. 2 embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, the IGCC power stations using a total power generating capacity as 260MW are that embodiment is done in detail to the present invention
Narration, the main configuration in the IGCC power stations and device parameter are shown in Table 1.
The IGCC power stations capital equipment configuration of table 1
Reference picture 1, a kind of energy-saving activation system in IGCC power stations, including coal gasification unit 2, a coal of coal gasification unit 2
Powder entrance and coal dust 1 connect, and the oxygen intake of coal gasification unit 2 connects with the oxygen outlet of air separation unit 3, air separation unit 3
The entrance of air compressor machine 4 sucks the first air 5, and the syngas outlet of coal gasification unit 2 is divided into three tunnels, and the first via connects with flare tower 20
Connect, the second tunnel is connected with afterburner 11, and the 3rd tunnel is connected with the combustion chamber of gas turbine 7；The air compressor machine entrance of gas turbine 7 is inhaled
Enter the second air 6, the entry of combustion chamber input light diesel 8 of gas turbine 7, the stiff shaft of gas turbine 7 and gas turbine generator
13 connections, gas turbine 7 drive gas turbine generator 13 to generate electricity, the first smoke evacuation 12 of gas turbine 7 and the cigarette of waste heat boiler 14
Road entrance connection, the second smoke evacuation 19 of waste heat boiler 14 are discharged into air；
The air intake of afterburner 11 connects with the outlet of afterburning blower fan 10, and the entrance of afterburning blower fan 10 sucks the 3rd air 9, mends
The outlet of burner 11 is connected with the flue entrance of waste heat boiler 14, and the feed-water intake of waste heat boiler 14 is connected with feed pipe 15, waste heat pot
The outlet of the superheated steam of stove 14 is connected with the steam inlet of steam turbine 17, and the exhaust steam of steam turbine 17 outlet 16 is connected to condensing system, steamer
The stiff shaft of machine 17 is connected with steam turbine generator 18, and steam turbine 17 drives steam turbine generator 18 to generate electricity.
Described air separation unit 3 is the independent air compressor machine using motorized motions.
Described gas turbine 7 is suitable for using the low-calorific-value gas turbine of synthesis gas, it is necessary to be opened using light diesel 8
Dynamic and load up to 55%~70% rated load can just switch to synthesis gas fuel.
Described waste heat boiler 14 is the waste heat boiler with fuel supplementing type, using external combustion-compensating device.
Described afterburning blower fan 10 and afterburner 11 form the combustion-compensating device of waste heat boiler 14, and combustion-compensating device uses coal gasification
The synthesis gas that unit 2 produces is as afterburning fuel, and combustion-compensating device only uses in the start-up course of IGCC power stations, to improve waste heat boiler
With the toggle speed of turbine system, combustion-compensating device is out of service after the operation of IGCC normal tables.
Described waste heat boiler 14 is started using synthesis gas afterburning immediately after the start completion of coal gasification unit 2,
Waste heat boiler 14 produces steam and drives steam turbine 17 to start, and drives steam turbine generator 18 to generate electricity, without waiting gas turbine 7
It is preferential to start.
The power consumption of described air separation unit 3, most start start when use power network power purchase, when steam turbine generator generating with
Afterwards, the power consumption of air separation unit 3 switches to station service.
A kind of startup method of described energy-saving activation system in IGCC power stations is：Start space division list from power network power taking first
Member 3, the main current consuming apparatus of the grade of air compressor machine 4 of air separation unit 3 utilize the driven by power of power network, when the stable production oxygen of air separation unit 3
Afterwards, provide oxygen to coal gasification unit 2 and start coal gasification unit 2；Coal gasification unit 2 is sent using coal dust 1 and air separation unit 2
Oxygen produces synthesis gas, and the starting stage synthesis gas yield that coal gasification unit 2 starts is unstable, and synthesis pneumatic transmission flare tower 20 is put
The processing of air-fuel burning；Synthesis pneumatic transmission afterburner 11, at the same time starts afterburning after the running and comparing of coal gasification unit 2 is stable
Blower fan 10, afterburning blower fan suck the 3rd air 9 and provide combustion air, synthesis gas burning production in burner 11 to afterburner 11
Raw high-temperature flue gas send waste heat boiler 14, and at the same time, feed pipe 15 persistently provides the feedwater of certain pressure to waste heat boiler 14；It is remaining
Heat boiler 14 using afterburner 11 come high-temperature flue gas heating feedwater produce steam be sent to steam turbine 17；Steam turbine 17 utilizes waste heat
Steam caused by boiler 14 carries out red switch and drives the electricity generation grid-connecting of steam turbine generator 18, and carries out warming-up with initial load 10MW；
After warming-up terminates, according to synthesis gas yield, the load of afterburning blower fan 10, afterburner 11 and waste heat boiler 14 is stepped up, is increased
Add steam production, to step up the load of steam turbine 17, the generation load Synchronous lifting of steam turbine generator 18；In this embodiment
In, because the gasification furnace in the coal gasification unit 2 of use can also produce the middle pressure saturated vapor of about 150t/h flows, this part
Steam in addition to supplying station-service auxiliary steam, unnecessary point of emptying, starts simultaneously band before the startup of steam turbine 17 in steam turbine 17
Generation load is to the medium pressure steam system that some vapor after about 50MW, can be delivered to waste heat boiler 14 according to load condition
Overheated, then send steam turbine 17 to generate electricity；After steam turbine 17 drives the generating of steam turbine generator 18, the power supply of air separation unit 3
Source from power network power taking by switching to station service；Start gas turbine 7, gas turbine 7 starts red switch stage gas turbine generator 13
Used as motor, the air compressor machine for driving gas turbine 7 using station service rotates, and the air compressor machine of gas turbine 7 suction second is empty
Gas 6 is sent into combustion chamber, and input light diesel 8 delivers to combustion chamber, high temperature and high pressure flue gas caused by the ignition, combustion room of gas turbine 7
The flue of waste heat boiler 14 is delivered in the first smoke evacuation 12 as gas turbine 7 after turbine pit's expansion work of gas turbine 7；Combustion
After gas-turbine 7 is lighted a fire successfully, stablized by adjusting the quantity delivered of light diesel 8 come the revolution of regulating gas turbine 7 to 3000r/min,
Gas turbine generator 13 is then changed into generator using electricity generation grid-connecting is carried out, then by lifting the quantity delivered of light diesel 8
Gas turbine load is gradually lifted to 110MW；During the load of gas turbine 7 is gradually increasing, gas turbine 7 is sent to waste heat
First 12 flows of smoke evacuation of boiler 14 gradually increase, and the load of afterburner 11 are at this moment gradually reduced, so that waste heat boiler 14 and vapour
The load of turbine 17 remains stable, and the unnecessary synthesis gas that coal gasification unit 2 is produced is vented by flare tower 20 to burn；When gas turbine 7
Load is risen to after 110MW, carries out the operation of the Fuel switching of gas turbine 7, the fuel of gas turbine 7 is switched by light diesel 8
For synthesis gas, and the synthesis gas for being sent to afterburner 11 and flare tower 20 is gradually turned down until fully closed；Stop afterburning blower fan 10, afterburner
11 is out of service, and now waste heat boiler 14 is driven by the first smoke evacuation 12 of gas turbine completely；Carried out according to network load demand
Generation load adjusts, and cooperation, the IGCC power stations such as air separation unit 3, coal gasification unit 2, gas turbine 7 and steam turbine 17 are complete
Help the startup of factory.The boot sequence of each unit and required time are as shown in Fig. 2 table 2 is given using the inventive method
Carry out the Cost comparisons between IGCC power station cold start and current universal method, it can be seen that the inventive method can be reduced
Start the time, save energy consumption, reduce payment for initiation and use.
Table 2 carries out IGCC power station cold start and the Cost comparisons of current universal method using the inventive method
Claims (8)
1. a kind of energy-saving activation system in IGCC power stations, including coal gasification unit (2), it is characterised in that：Coal gasification unit (2)
Coal powder entrance and coal dust (1) connection, the oxygen intake of coal gasification unit (2) connect with the oxygen outlet of air separation unit (3), space division
Air compressor machine (4) entrance of unit (3) sucks the first air (5), and the syngas outlet of coal gasification unit (2) is divided into three tunnels, and first
Road is connected with flare tower (20), and the second tunnel is connected with afterburner (11), and the 3rd tunnel is connected with the combustion chamber of gas turbine (7)；Combustion
The air compressor machine entrance of gas-turbine (7) sucks the second air (6), and the entry of combustion chamber of gas turbine (7) inputs light diesel (8),
Gas turbine (7) stiff shaft is connected with gas turbine generator (13), the first smoke evacuation (12) of gas turbine (7) and waste heat boiler
(14) flue entrance connection, the second smoke evacuation (19) of waste heat boiler (14) are discharged into air；
Afterburner (11) air intake connects with afterburning blower fan (10) outlet, and the entrance of afterburning blower fan (10) sucks the 3rd air
(9), afterburner (11) outlet is connected with waste heat boiler (14) flue entrance, the feed-water intake and feed pipe of waste heat boiler (14)
(15) connect, the outlet of waste heat boiler (14) superheated steam is connected with steam turbine (17) steam inlet, steam turbine (17) exhaust steam outlet
(16) condensing system is connected to, steam turbine (17) stiff shaft is connected with steam turbine generator (18).
A kind of 2. energy-saving activation system in IGCC power stations according to claim 1, it is characterised in that：Described air separation unit
(3) for using the independent air compressor machine of motorized motions.
A kind of 3. energy-saving activation system in IGCC power stations according to claim 1, it is characterised in that：Described gas turbine
(7) be low-calorific-value gas turbine suitable for using synthesis gas, it is necessary to started using light diesel (8) and load up to 55%~
70% rated load can just switch to synthesis gas fuel.
A kind of 4. energy-saving activation system in IGCC power stations according to claim 1, it is characterised in that：Described waste heat boiler
(14) it is the waste heat boiler with fuel supplementing type, using external combustion-compensating device.
A kind of 5. energy-saving activation system in IGCC power stations according to claim 1, it is characterised in that：Described afterburning blower fan
(10) and afterburner (11) forms the combustion-compensating device of waste heat boiler (14), and combustion-compensating device uses the synthesis of coal gasification unit (2) production
Gas only uses as afterburning fuel, combustion-compensating device in the start-up course of IGCC power stations, after the operation of IGCC power stations normal table
Combustion-compensating device is out of service.
A kind of 6. energy-saving activation system in IGCC power stations according to claim 1, it is characterised in that：Described waste heat boiler
(14) started immediately using synthesis gas afterburning after coal gasification unit (2) start completion, waste heat boiler (14) produces steaming
Vapour drives steam turbine (17) to start, and drives steam turbine generator (18) to generate electricity.
A kind of 7. energy-saving activation system in IGCC power stations according to claim 1, it is characterised in that：Described air separation unit
(3) power consumption, power network power purchase is used when most starting and starting, after steam turbine generator (18) generating, air separation unit (3)
Power consumption switches to station service.
A kind of 8. startup method of energy-saving activation system in IGCC power stations according to claim 1, it is characterised in that：First
Start air separation unit (3) from power network power taking, the air compressor machine (4) of air separation unit (3) utilizes the driven by power of power network, when space division list
After first (3) stable production oxygen, provide oxygen to coal gasification unit (2) and start coal gasification unit (2)；Coal gasification unit (2) utilizes coal
The oxygen that powder (1) and air separation unit (3) are sent produces synthesis gas, the starting stage synthesis gas yield that coal gasification unit (2) starts
Unstable, synthesis pneumatic transmission flare tower (20) does emptying burning processing；Synthesis pneumatic transmission is mended after coal gasification unit (2) is stable
Burner (11), at the same time starts afterburning blower fan (10), and afterburning blower fan sucks the 3rd air (9) and provided to afterburner (11) and helped
Air is fired, synthesis gas burning in burner (11) produces high-temperature flue gas and send waste heat boiler (14), at the same time, feed pipe (15)
Water is continuously available to waste heat boiler (14)；Waste heat boiler (14) using afterburner (11) come high-temperature flue gas heating feedwater produce
Steam is sent to steam turbine (17)；Steam turbine (17) carries out red switch using steam caused by waste heat boiler (14) and drives turbine generator
Machine (18) electricity generation grid-connecting, and with initial load warming-up；After warming-up terminates, according to synthesis gas yield, afterburning blower fan is stepped up
(10), the load of afterburner (11) and waste heat boiler (14), steam production is increased, to step up the negative of steam turbine (17)
Lotus, steam turbine generator (18) generation load Synchronous lifting；The power supply source of air separation unit (3) from power network power taking by switching to station-service
Electricity；Start gas turbine (7), gas turbine (7) starts red switch stage gas turbine generator (13) and used as motor, utilized
Station service drives the air compressor machine of gas turbine (7) to rotate, and gas turbine (7) air compressor machine sucks the second air (6) and is sent into combustion chamber,
Input light diesel (8) delivers to combustion chamber, and high temperature and high pressure flue gas is through gas turbine caused by gas turbine (7) ignition, combustion room
(7) flue of waste heat boiler (14) is delivered in the first smoke evacuation (12) after turbine pit's expansion work as gas turbine (7)；Combustion gas
It is stable to 3000r/ come regulating gas turbine (7) revolution by adjusting light diesel (8) quantity delivered after turbine (7) is lighted a fire successfully
Min, gas turbine generator (13) is then changed into generator using electricity generation grid-connecting is carried out, then by lifting light diesel
(8) quantity delivered gradually lifts gas turbine (7) load to the load that can carry out Fuel switching；Gas turbine (7) load by
During gradually rising, first smoke evacuation (12) flow that gas turbine (7) is sent to waste heat boiler (14) gradually increases, at this moment gradually
Reduce the load of afterburner (11), so that waste heat boiler (14) and steam turbine (17) load remain stable, coal gasification unit (2) production
Unnecessary synthesis gas pass through flare tower (20) emptying burning；The negative of Fuel switching can be carried out when gas turbine (7) load rises to
After lotus, the operation of gas turbine (7) Fuel switching is carried out, the fuel of gas turbine (7) is switched to by light diesel (8) and synthesized
Gas, and the synthesis gas for being sent to afterburner (11) and flare tower (20) is gradually turned down until fully closed；Stop afterburning blower fan (10), afterburner
(11) out of service, now waste heat boiler (14) is driven by the first smoke evacuation (12) of gas turbine completely, and IGCC power stations are completed complete
The startup of factory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108954374A (en) * | 2018-08-16 | 2018-12-07 | 哈尔滨锅炉厂有限责任公司 | Combined Cycle Heat Recovery Boiler afterburning wind system |
| CN109412183A (en) * | 2018-11-22 | 2019-03-01 | 西安热工研究院有限公司 | A kind of integrated power generation system and method for combining oxygen-enriched combusting and liquid oxygen energy storage |
| CN112855302A (en) * | 2021-01-29 | 2021-05-28 | 中国华能集团清洁能源技术研究院有限公司 | IGCC power station coupling air liquefaction equipment system and working method thereof |
| CN112994118A (en) * | 2021-02-05 | 2021-06-18 | 中国华能集团清洁能源技术研究院有限公司 | Gasification furnace hydrogenation system of IGCC power station and working method thereof |
| CN112983584A (en) * | 2021-02-07 | 2021-06-18 | 华能（天津）煤气化发电有限公司 | Integrated Integrated Gasification Combined Cycle (IGCC) power station start-stop method |
| CN114060114A (en) * | 2021-11-23 | 2022-02-18 | 中国华能集团清洁能源技术研究院有限公司 | IGCC power station one-key start-stop control method |
| CN114251138A (en) * | 2020-09-23 | 2022-03-29 | 上海电气电站设备有限公司 | Steam supplementing type starting method of steam turbine unit |
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| CN112983584A (en) * | 2021-02-07 | 2021-06-18 | 华能（天津）煤气化发电有限公司 | Integrated Integrated Gasification Combined Cycle (IGCC) power station start-stop method |
| CN114060114A (en) * | 2021-11-23 | 2022-02-18 | 中国华能集团清洁能源技术研究院有限公司 | IGCC power station one-key start-stop control method |
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