CN106246252B - A kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit - Google Patents
A kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit Download PDFInfo
- Publication number
- CN106246252B CN106246252B CN201610822033.3A CN201610822033A CN106246252B CN 106246252 B CN106246252 B CN 106246252B CN 201610822033 A CN201610822033 A CN 201610822033A CN 106246252 B CN106246252 B CN 106246252B
- Authority
- CN
- China
- Prior art keywords
- steam
- supercritical
- super critical
- combined cycle
- turbine
- 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.)
- Active
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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit, including IGCC generating sets and supercritical generating sets, gasification outlet of still in the IGCC generating sets connects clean unit synthesis gas entrance, clean unit outlet is divided into two-way, the combustion chamber of gas turbine is connect all the way, peak load stations is made to carry out quick load change by the synthesis gas air inflow of regulating gas turbine, another way connects the synthesis gas burner of the super critical boiler in supercritical generating sets；Introduction pipe in the cylinder of the supercritical steam turbine of steam by super critical boiler is provided and is connected to steam regulator, steam regulator outlet connects the combined cycle steam turbine inlet duct in IGCC generating sets；The present invention is got in touch with by pipeline between system, cooperation, and two kinds of flows is made to organically blend, and realizes that power station is quick, ability of depth peak regulation can simultaneously keep higher generating efficiency.
Description
Technical field
The invention belongs to coal-fired power generator set fields, are related to a kind of peak load stations and tune for integrating IGCC and supercritical unit
Peak method.
Background technology
Cheap due to rich coal resources in China, for a long time, coal fired power generation all occupies in China's supply of electric power
The principal status of public economy, the electricity that the annual whole nation has more than 70% are sent out by coal-burning power plant.China's coal fired power generation passes through long-term development, combustion
Coal power generation machine set technology ability constantly improve, main steam condition are continuously improved, and generating efficiency constantly promotes, and environmental-protecting performance is also significantly
Improve.However, using wind-powered electricity generation as representative can the energy generate electricity continue to develop grow background under, coal fired power plant will face energy saving
Another a major challenge except emission reduction, i.e. peak modulation capacity are promoted.
On the one hand it is the new of representative with large capacity supercritical coal-fired units and IGCC (integrated gasification combined cycle plants) power generations
Type coal-fired power generator set has refreshed the record of coal fired power generation efficiency and pollution reduction, and two are specified for following coal fired power generation
Important development direction.On the other hand, with the continuous adjustment of China's energy resource structure, using wind-powered electricity generation as the renewable energy power generation of representative
Ratio is constantly promoted, and since regenerative resource has the characteristics of sustainable, low stain, therefore has obtained vigorously supporting for country,
It quickly grows.However, the renewable energy power generation using wind-powered electricity generation as representative has very big uncertainty and unstability, reliability
It can be extremely low.Such as wind power plant, it can only send out electric energy when having wind, and often power consumer is not at this time
Electricity consumption centainly is needed, and when power consumer needs electricity consumption, but not necessarily there is wind.Electric energy can not large scale storage, electric energy
That is the characteristic of hair i.e. determines that must have a certain number of generating sets in power grid is specifically used to peak regulation.When there is wind, wind
TV university scale is surfed the Internet, and regulating units is needed to reduce load or even depth load down at this time, are put down with the supply and demand for maintaining power grid electric energy
Weighing apparatus, and decline when wind-powered electricity generation meets with wind-force, when power generation is reduced, and regulating units is needed quickly to increase load, exited with supplementing wind-powered electricity generation
Generated output.
Ended for the end of the year 2015, China's installed capacity of wind-driven power has reached about 1.5 hundred million kilowatts, to ensure so large-scale wind
Electricity online needs the generating set of other a large amount of reliable forms to carry out peak regulation.Present case is that nuclear power generating sets are often all pacified
Row's burden basic load, unit will maintain generating state at full capacity, seldom make variation, it is impossible to peak regulation；It is needed since water conservancy is adjusted
The limit is also performed to the limitation of installed capacity, hydroelectric peak ability, can not meet peak regulation notch；Thus to ensure wind
Electricity online, peak load regulation network responsibility need fired power generating unit to undertake naturally.China is due to the limitation of natural gas resource shortage, it is impossible to build
If too many plant gas is used for peak regulation, thus coal-burning power plant participates in the inevitable requirement that peak regulation is future electrical energy development.Therefore not
Carry out the ability that Thermal generation unit should have quick startup, low-load combustion-stabilizing and quick load up.
At present, overcritical generating plant pulverized coal boiler is because without the large volumes thick-walled metal component such as drum, thus less worry
The influence of metal thermal stress, can faster variable load, this is the advantage that overcritical power station participates in peak regulation, however, low negative
During lotus state, especially when load is less than less than the 35% of design value, burner hearth is difficult surely to fire, and needs to throw oily auxiliary combustion.Fuel oil
Cost is very big, and fuel oil can pollute, and tail portion dedusting, desulphurization denitration equipment cannot run well.And IGCC generating sets,
Since system flow is very long, the Load Regulation response time is longer, load change speed very little, relies solely on IGCC power generations and also is difficult to
Adapt to the requirement of peak regulation.The coal fired power generation form of supercritical unit and two kinds of IGCC most efficiency and environment-friendly advantage, is all difficult to fit
The needs of wind-powered electricity generation online peak regulation should be coordinated, this is the major issue that the development of current coal fired power generation faces.
Invention content
Present invention solves the problem in that a kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit are provided,
It can realize the low-load combustion-stabilizing of super critical boiler low cost, and make ability of the power station with wide load, the peak regulation of fast speed, gram
Large capacity supercritical thermal power unit and IGCC generating sets have been taken respectively due to being difficult to low-load combustion-stabilizing and being difficult to quick load change
The shortcomings that without adapting to cooperation wind-powered electricity generation online quick peak regulation.
The present invention is to be achieved through the following technical solutions：
A kind of peak load stations for integrating IGCC and supercritical unit, including IGCC generating sets and supercritical generating sets,
Gasification outlet of still in the IGCC generating sets connects clean unit synthesis gas entrance, and clean unit, which exports, is divided into two-way, and one
Road connects the combustion chamber of gas turbine, peak load stations is made to carry out quick load change by the synthesis gas air inflow of regulating gas turbine,
Another way connects the synthesis gas burner of the super critical boiler in supercritical generating sets；Super critical boiler, which connects, to be drawn synthesis gas and lights a fire
Start and surely fired using synthesis gas in underload；
Introduction pipe in the cylinder of the supercritical steam turbine of steam by super critical boiler is provided and is connected to steam regulator, is steamed
The outlet of vapour adjuster connects the combined cycle steam turbine inlet duct in IGCC generating sets, when IGCC generating sets start,
Red switch and on-load are carried out to joint cyclic steam turbine by the steam extraction from steam regulator.
In the IGCC generating sets, the coal powder entrance of gasification furnace connects the oxygen of coal dust, oxygen intake and air separation unit
Outlet is connected；The coaxially connected gas turbine generator of gas turbine, the outlet of gas turbine turbine connect waste heat boiler, and waste heat boiler goes out
Mouth is discharged fume for waste heat boiler；Waste heat boiler higher pressure steam outlet connects combined cycle steam turbine entrance, combined cycle steam turbine
Coaxially connected combined cycle steam turbine generator, the second condenser entrance of combined cycle steam turbine outlet connection, the second condensing
The second entrance of water-supplying pump of device outlet connection, the second feedwater pump discharge connection waste heat boiler feed-water intake.
In the supercritical generating sets, super critical boiler is equipped with coal dust burner and synthesis gas burner, and coal dust burner connects
Boiler coal-ash, super critical boiler main-steam outlet connect the high pressure cylinder entrance of supercritical steam turbine, supercritical steam turbine
High pressure cylinder outlet connection super critical boiler reheater entrance, the outlet of super critical boiler reheater are connected in supercritical steam turbine
Cylinder pressure entrance, the low pressure (LP) cylinder entrance of the intermediate pressure cylinder outlet connection supercritical steam turbine of supercritical steam turbine, supercritical steam
The first condenser steam exhaust entrance of low pressure (LP) cylinder outlet connection of turbine；The coaxially connected supercritical steam wheel power generation of supercritical steam turbine
Machine, the first condenser outlet connection low-pressure heater group entrance, the outlet of low-pressure heater group connect the first entrance of water-supplying pump, and first gives
Exit of pump connects high-pressure heater group entrance, and the outlet of high-pressure heater group connects super critical boiler feed-water intake.
A pipeline is respectively drawn in the intermediate pressure cylinder stage casing of supercritical steam turbine and intermediate pressure cylinder front end be connected to steam tune respectively
Device is saved, steam regulator outlet connects combined cycle steam turbine inlet duct.
The IGCC generating sets operation of the peak load stations and in the case of starting supercritical generating sets, in super critical boiler
During startup, draw synthesis gas using being connect from clean unit and light a fire, until super critical boiler coal dust firing stops again after stablizing
Burn synthesis gas；
In the case of supercritical generating sets run and to start IGCC generating sets, in gasification furnace initial start stage, gas
Change the produced synthesis gas of stove and all send to super critical boiler burning, after gasification furnace institute production of synthetic gas stability of flow, synthesis gas
Change and send to gas turbine；In combined cycle steam turbine initial start stage, combined cycle steam turbine comes first with steam regulator
Steam red switch and generate electricity by way of merging two or more grid systems；After gas turbine starts and waste heat boiler is driven to generate the steam of corresponding parameter, then
The confession vapour source of combined cycle steam turbine is switched to waste heat boiler.
The peak regulating method of peak load stations based on the integration IGCC and supercritical unit, including following operation：
When grid requirements peak load stations rapid-transport line, gasification furnace load maintenance stablize it is constant, by reducing combustion gas wheel
The synthesis gas air inflow of machine reduces rapidly load, and the synthesis gas that gasification furnace has more is connected to overcritical pot from clean unit outlet
Stove burns, while reduces the coal dust amount of super critical boiler, and the load of super critical boiler is made to continuously decrease or maintain as needed steady
It is fixed；If power grid needs power station to carry out Load lifting in short time range again, the synthesis tolerance for being sent to super critical boiler is reduced, is increased
Add the synthesis tolerance for being sent to gas turbine, quickly to increase power station generated output, the load of super critical boiler passes through increase at this time
Coal dust amount maintains.
Compared with prior art, the present invention has technique effect beneficial below：
The peak load stations and peak regulating method provided by the invention for integrating IGCC and supercritical unit, using IGCC with it is overcritical
The technology type that fired power generating unit is combined sets the liaison tube of synthesis gas and steam between IGCC and supercritical generating sets
Road organically blends two kinds of forms of electricity generation, realizes high generation efficiency and environmental-protecting performance.The synthesis gas that gasification furnace generates both may be used
Gas turbine generating system to be sent to generate electricity, part or all can also be separated and be sent to super critical boiler burning, ensured that in this way
Ignite demand and steady combustion demand when carrying out ultra-low load peak regulation when super critical boiler starts, obtain super critical boiler
The quick peak modulation capacity started and ultra-low load steady fires.
In IGCC initial start stages, when the produced synthesis gas quality of gasification furnace is unstable, it is insufficient for gas turbine use
It is required that when, synthesis gas, which can be sent in super critical boiler, to burn, and avoids the waste sent to torch burning and cause fuel, realizes
Energy regenerating.And synthesis gas igniting may be used during super critical boiler startup, fuel oil is replaced using synthesis gas, saves fuel oil
Expense.
Gas turbine needs to start using fuel oil, rises to after high load capacity again by Fuel switching into synthesis gas, and combustion gas wheel
Machine needs first to keep underload from starting to before rising to high load capacity, combination circulation steam turbine to be waited for start and warming-up, causes
Gas turbine startup speed is slow, and the fuel oil time is long, and fuel consumption is big.The present invention is in supercritical steam turbine and combined cycle vapor wheel
There is steam liaison tube between machine, change the start-up course of IGCC combined cycles part, it can be first with supercritical steam turbine
Steam extraction red switch and on-load are carried out to joint cyclic steam turbine, after gas turbine startup, directly gas turbine is carried
It rises to and carries out Fuel switching after higher load again, red switch and warming-up process without waiting for combined cycle steam turbine again,
Thus fuel oil usage amount is saved, and accelerate the start-up course of combined cycle.
When peak load regulation network needs power station rapid-transport line, combustion engine can directly reduce synthesis gas air inflow and lighten the burden
Lotus without gasification furnace synthesis gas yield is waited for decline, improves load down speed, the synthesis gas of gasification furnace fecund can be sent to
Super critical boiler burns, and avoids energy dissipation.During depth peak regulation, super critical boiler is surely fired using synthesis gas, and the steady combustion of oil is thrown in substitution,
Operating cost is saved, and avoids what the equipment such as the electric precipitation of boiler tail, desulphurization denitration were generated by fuel oil imperfect combustion
Black smoke pollution improves the safety of equipment.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 is coal dust；2 be gasification furnace；3 be clean unit；4 be boiler coal-ash；5 be super critical boiler；6 face to be super
Boundary's steam turbine；7 be supercritical steam turbine generator；8 be the first condenser；9 be low-pressure heater group；10 be the first feedwater
Pump；11 be high-pressure heater group；12 be air；13 be air separation unit；14 be gas turbine；15 be gas turbine generator；16 are
Waste heat boiler；17 discharge fume for waste heat boiler；18 be steam regulator；19 be combined cycle steam turbine；20 steam for combined cycle
Steam turbine generator；21 be the second condenser；22 be the second feed pump.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Referring to Fig. 1, a kind of peak load stations for integrating IGCC and supercritical unit, including IGCC generating sets and overcritical hair
Motor group, which is characterized in that the outlet of gasification furnace 2 in the IGCC generating sets connects 3 synthesis gas entrance of clean unit, purifies
The outlet of unit 3 is divided into two-way, connects the combustion chamber of gas turbine 14 all the way, is made by the synthesis gas air inflow of regulating gas turbine 14
Peak load stations carry out quick load change, and another way connects the synthesis gas burner of the super critical boiler 5 in supercritical generating sets；It is super to face
Boundary's boiler 5, which connects, to be drawn synthesis gas and carries out igniting startup and surely fired using synthesis gas in underload；
Introduction pipe in the cylinder of the supercritical steam turbine 6 of steam by super critical boiler 5 is provided and is connected to steam regulator
18, steam regulator 18 exports 19 inlet duct of combined cycle steam turbine connect in IGCC generating sets, in IGCC generators
When group starts, red switch and on-load are carried out to joint cyclic steam turbine 19 by the steam extraction from steam regulator 18.
The technology type that the present invention is combined using IGCC with supercritical thermal power unit, in IGCC and supercritical generating sets
Between setting synthesis gas and steam contact pipeline, two kinds of forms of electricity generation are organically blended.The synthesis gas that gasification furnace generates
Both gas turbine generating system can be sent to generate electricity, part or all can also be separated and be sent to super critical boiler burning, thus
It ensure that ignite demand and steady combustion demand when carrying out ultra-low load peak regulation when super critical boiler starts, make super critical boiler
Obtain the quick peak modulation capacity started and ultra-low load steady fires.Have between supercritical steam turbine and combined cycle steam turbine
Steam liaison tube when IGCC starts, can carry out joint cyclic steam turbine first with the steam extraction of supercritical steam turbine
Gas turbine after gas turbine startup, is directly promoted to higher load, without waiting for connection again by red switch and on-load
Red switch and the warming-up process of cyclic steam turbine are closed, thus accelerates the start-up course of the combined cycle part of IGCC.
The peak regulating method of peak load stations based on the integration IGCC and supercritical unit, including following operation：
When grid requirements peak load stations rapid-transport line, 2 load of gasification furnace maintenance stablize it is constant, by reducing combustion gas wheel
The synthesis gas air inflow of machine 14 reduces rapidly load, and the synthesis gas that gasification furnace 2 has more is connected to super face from the outlet of clean unit 3
Boundary's boiler 5 burns, while reduces the coal dust amount of super critical boiler 5, make the load of super critical boiler 5 continuously decrease as needed or
It maintains to stablize；If power grid needs power station to carry out Load lifting in short time range again, the synthesis for being sent to super critical boiler 5 is reduced
Tolerance increases the synthesis tolerance for being sent to gas turbine 14, and quickly to increase power station generated output, super critical boiler 5 is negative at this time
Lotus is maintained by increasing coal dust amount.
Specific embodiment is given below.As shown in Figure 1, the peak load stations include gasification furnace 2, clean unit 3, overcritical
Boiler 5, supercritical steam turbine 6, supercritical steam turbine generator 7, the first condenser 8, low-pressure heater group 9, first feed water
Pump 10, high-pressure heater group 11, air separation unit 13, gas turbine 14, gas turbine generator 15, waste heat boiler 16, steam are adjusted
Device 18, combination circulation steam turbine 19, combined cycle steam turbine generator 20, the second condenser 21 and second feed pump 22 etc. are mainly set
Standby composition.
The connection mode of each capital equipment in power station and unit is：13 entrance of air separation unit connects air 12,13 oxygen of air separation unit
Gas outlet connects 2 oxygen intake of gasification furnace, and 2 coal powder entrance of gasification furnace connects coal dust 1, and the outlet of gasification furnace 2 connects 3 crude synthesis gas of clean unit
Entrance, the outlet of clean unit 3 are divided into two-way, connect the synthesis gas burner of super critical boiler 5 all the way, another way connects gas turbine 14 and fires
Room, 14 coaxially connected gas turbine generator 15 of gas turbine are burnt, the outlet of 14 turbine of gas turbine connects waste heat boiler 16, waste heat boiler
16 outlets are waste heat boiler smoke evacuation 17；16 higher pressure steam outlet of waste heat boiler connects 19 entrance of combined cycle steam turbine, combines and follows
19 coaxially connected combined cycle steam turbine generator 20 of ring steam turbine, the second condensing of the outlet of combined cycle steam turbine 19 connection
21 entrance of device, the second condenser 21 outlet connection 22 entrance of the second feed pump, the second feed pump 22 outlet connection waste heat boiler 16
Feed-water intake；
5 coal dust burner of super critical boiler connects boiler coal-ash 4,5 main-steam outlet of super critical boiler connection supercritical steam wheel
6 high pressure cylinder entrance of machine, 6 high pressure cylinder of supercritical steam turbine outlet connection, 5 reheater entrance of super critical boiler, super critical boiler 5
Reheater outlet connection 6 intermediate pressure cylinder entrance of supercritical steam turbine, the outlet of 6 intermediate pressure cylinder of supercritical steam turbine connect overcritical steaming
6 low pressure (LP) cylinder entrance of steam turbine, 6 low pressure (LP) cylinder of supercritical steam turbine outlet connection, 8 steam exhaust entrance of the first condenser；Supercritical steam
6 coaxially connected supercritical steam turbine generator 7 of turbine, 9 entrance of the first condenser 8 outlet connection low-pressure heater group, low pressure add
The hot outlet of device group 9 connects 10 entrance of the first feed pump, and the outlet of the first feed pump 10 connects 11 entrance of high-pressure heater group, high-pressure heater
11 outlet of group connects 5 feed-water intake of super critical boiler.In 6 intermediate pressure cylinder stage casing of supercritical steam turbine and Chao Linzheng circle steam turbines 6
Cylinder pressure front end draws a pipeline and is connected to steam regulator 18 respectively, and the outlet of steam regulator 18 connects combined cycle steam turbine 19
Inlet duct.
The characteristic that peak load stations should have include it is quick start, fast lifting load and station boiler in underload even
The burning that can stablize during ultra-low load, i.e., steady combustion.Illustrate that the peak load stations realize the process of these properties below.The tune
The startup of supercritical generating part and supercritical generating part when the startup in peak power station is divided into the cold start of full factory, IGCC operations
Three kinds of situations of the startup of IGCC parts during operation, the power station can arrange IGCC parts and supercritical generating part to shut down inspection respectively
It repaiies, so the start-up course of the power station overwhelming majority refers to latter two situation.
The pipeline for having and being connected to super critical boiler is exported in purified synthesis gas unit 3, super critical boiler 5, which can connect, draws synthesis
Gas is carried out igniting startup and is surely fired using synthesis gas in underload.Supercritical generating portion will be started for the operation of IGCC parts
Point situation, when super critical boiler 5 starts, using connect from clean unit 3 be introduced through come synthesis gas light a fire, up to surpass face
Boiler 5 coal dust firing in boundary's stops burn synthesis gas again after stablizing.Supercritical generating part is run and to start IGCC portions
Situation about dividing, in gasification furnace initial start stage, the produced synthesis gas of gasification furnace all sends to super critical boiler 5 and burns, to recycle heat
Steam can be generated to be used for generating electricity, after gasification furnace institute production of synthetic gas stability of flow, synthesis gas, which changes, to be sent to gas turbine.
Steam regulator 18 is provided with, and two strands of steam are extracted from supercritical steam turbine in combined cycle vapor wheel pusher side
It is mixed to steam regulator 18, to obtain the steam of suitable parameters.In 19 initial start stage of combined cycle steam turbine, combined cycle
Steam turbine 19 carries out red switch first with the steam of steam regulator 18 and generates electricity by way of merging two or more grid systems；When gas turbine 14 starts simultaneously band
After dynamic waste heat boiler 16 generates the steam of corresponding parameter, then the confession vapour source of combined cycle steam turbine 19 is switched to waste heat pot
Stove 16, the measure can accelerate the startup speed of gas turbine and combined cycle steam turbine.
For the quick load change demand of responsive electricity grid peak regulation, carried out by the synthesis gas air inflow of regulating gas turbine quick
Varying duty, the maintenance of gasification furnace load are stablized constant, are faced except in addition to gas turbine power generation, the synthesis gas of gasification furnace fecund is sent to surpass
Boundary's boiler combustion.When grid requirements power station rapid-transport line, combustion gas wheel is reduced rapidly by reducing synthesis gas air inflow first
The load of machine 14, and the synthesis gas that gasification furnace 2 has more is connected to super critical boiler 5 from the outlet of clean unit 3 and is burnt, it reduces simultaneously
The coal dust amount of super critical boiler 5 makes the load of super critical boiler 5 continuously decrease or maintain as needed to stablize.If the short time
In the range of power grid power station is needed to carry out Load lifting again, then reduce and be sent to the synthesis tolerance of super critical boiler 5, combustion gas is sent in increase
The synthesis tolerance of turbine, quickly to increase power station generated output, the load of super critical boiler 5 is tieed up by increasing coal dust amount at this time
It holds.
When grid requirements power station carries out depth peak regulation Ultra-low load operation, if the load drop of super critical boiler 5
Down to rated load 35% hereinafter, then surely being fired using connecing the synthesis gas drawn from purified synthesis gas unit 3.
In the embodiment, the major parameter for the peak load stations which integrates with supercritical unit is provided by table 1.
Table 1 integrates the peak load stations major parameter of IGCC and overcritical thermal power generation unit
Example given above is to realize the present invention preferably example, and the present invention is not limited to above-described embodiments.This field
Technical staff any nonessential addition, the replacement made according to the technical characteristic of technical solution of the present invention, belong to this
The protection domain of invention.
Claims (6)
1. a kind of peak load stations for integrating integrated gasification combined cycle plants and supercritical unit, including integrated gasification combined cycle plants
Generating set and supercritical generating sets, which is characterized in that the gasification in the integrated gasification combined cycle for power generation unit
Stove (2) outlet connects clean unit (3) synthesis gas entrance, and clean unit (3) outlet is divided into two-way, connects gas turbine (14) all the way
Combustion chamber makes peak load stations carry out quick load change by the synthesis gas air inflow of regulating gas turbine (14), and another way connects super
The synthesis gas burner of super critical boiler (5) in critical generating set；Super critical boiler (5) connect draw synthesis gas carry out igniting open
It moves and is surely fired using synthesis gas in underload；
Introduction pipe in the cylinder of the supercritical steam turbine (6) of steam by super critical boiler (5) is provided and is connected to steam regulator
(18), the combined cycle steam turbine (19) that steam regulator (18) outlet is connect in integrated gasification combined cycle for power generation unit enters
Mouth pipeline, in integrated gasification combined cycle for power generation unit starting, is followed by the steam extraction for coming from steam regulator (18) to combining
Ring steam turbine (19) carries out red switch and on-load；
In the integrated gasification combined cycle for power generation unit, the coal powder entrance of gasification furnace (2) connects coal dust (1), oxygen intake
It is connected with the oxygen outlet of air separation unit (13)；Gas turbine (14) coaxially connected gas turbine generator (15), gas turbine
(14) turbine outlet connects waste heat boiler (16), and (17) are discharged fume in waste heat boiler (16) outlet for waste heat boiler；Waste heat boiler (16) is high
Pressure steam (vapor) outlet connects combined cycle steam turbine (19) entrance, the coaxially connected combined cycle steam of combined cycle steam turbine (19)
Turbine generator (20), combined cycle steam turbine (19) outlet connection the second condenser (21) entrance, the second condenser (21) go out
Mouth connection the second feed pump (22) entrance, the second feed pump (22) outlet connection waste heat boiler (16) feed-water intake；
In the supercritical generating sets, super critical boiler (5) connects pot equipped with coal dust burner and synthesis gas burner, coal dust burner
Stove coal dust (4), the high pressure cylinder entrance of super critical boiler (5) main-steam outlet connection supercritical steam turbine (6), supercritical steam
High pressure cylinder outlet connection super critical boiler (5) reheater entrance of turbine (6), super critical boiler (5) reheater outlet connection are super
The intermediate pressure cylinder entrance of transcritical vapor turbine (6), the intermediate pressure cylinder outlet connection supercritical steam turbine of supercritical steam turbine (6)
(6) low pressure (LP) cylinder entrance, low pressure (LP) cylinder outlet connection the first condenser (8) steam exhaust entrance of supercritical steam turbine (6)；It is overcritical
The coaxially connected supercritical steam turbine generator (7) of steam turbine (6), the first condenser (8) outlet connection low-pressure heater group (9)
Entrance, low-pressure heater group (9) outlet connect the first feed pump (10) entrance, and the first feed pump (10) outlet connects high-pressure heater group
(11) entrance, high-pressure heater group (11) outlet connect super critical boiler (5) feed-water intake.
2. integrating the peak load stations of integrated gasification combined cycle plants and supercritical unit as described in claim 1, feature exists
In in the intermediate pressure cylinder stage casing of supercritical steam turbine (6) and intermediate pressure cylinder front end, respectively one pipeline of extraction is connected to steam adjusting respectively
Device (18), steam regulator (18) outlet connect combined cycle steam turbine (19) inlet duct.
3. integrating the peak load stations of integrated gasification combined cycle plants and supercritical unit as described in claim 1, feature exists
In the case of starting supercritical generating sets in, the integrated gasification combined cycle for power generation unit operation of the peak load stations,
When super critical boiler (5) starts, draw synthesis gas using being connect from clean unit (3) and light a fire, until super critical boiler (5) coal dust
Flameholding stops burn synthesis gas again later；
In the case of supercritical generating sets run and to start integrated gasification combined cycle for power generation unit, in gasification furnace
(2) initial start stage, gasification furnace (2) produced synthesis gas all sends to super critical boiler (5) burning, when gasification furnace (2) produces conjunction
After stablizing into throughput, synthesis gas, which changes, to be sent to gas turbine (14)；In combined cycle steam turbine (19) initial start stage, joint
Cyclic steam turbine (19) carries out red switch first with the steam come from steam regulator (18) and generates electricity by way of merging two or more grid systems；Work as gas turbine
(14) after starting and driving the steam that waste heat boiler (16) generates corresponding parameter, then the steam supply by combined cycle steam turbine (19)
Source is switched to waste heat boiler (16).
4. integrating the peak load stations of integrated gasification combined cycle plants and supercritical unit as described in claim 1, feature exists
In, when grid requirements peak load stations rapid-transport line, gasification furnace (2) load maintenance stablize it is constant, by reducing gas turbine
(14) synthesis gas air inflow reduces rapidly load, and the synthesis gas that gasification furnace (2) has more is connected to from clean unit (3) outlet
Super critical boiler (5) burns, while reduces the coal dust amount of super critical boiler (5), and the load for making super critical boiler (5) is as needed
It continuously decreases or maintains to stablize；If power grid needs power station to carry out Load lifting in short time range again, reduction is sent to overcritical
The synthesis tolerance of boiler (5) increases the synthesis tolerance for being sent to gas turbine (14), quickly to increase power station generated output, at this time
The load of super critical boiler (5) is maintained by increasing coal dust amount.
5. integrating the peak load stations of integrated gasification combined cycle plants and supercritical unit as described in claim 1, feature exists
In when grid requirements peak load stations carry out depth peak regulation with Ultra-low load operation, if the load drop of super critical boiler (5)
Down to rated load 35% hereinafter, then surely being fired using connecing the synthesis gas drawn from purified synthesis gas unit (3).
6. a kind of peak regulation based on the peak load stations that integrated gasification combined cycle plants and supercritical unit are integrated described in claim 1
Method, which is characterized in that including following operation：
When grid requirements peak load stations rapid-transport line, gasification furnace (2) load maintenance stablize it is constant, by reducing gas turbine
(14) synthesis gas air inflow reduces rapidly load, and the synthesis gas that gasification furnace (2) has more is connected to from clean unit (3) outlet
Super critical boiler (5) burns, while reduces the coal dust amount of super critical boiler (5), and the load for making super critical boiler (5) is as needed
It continuously decreases or maintains to stablize；If power grid needs power station to carry out Load lifting in short time range again, reduction is sent to overcritical
The synthesis tolerance of boiler (5) increases the synthesis tolerance for being sent to gas turbine (14), quickly to increase power station generated output, at this time
The load of super critical boiler (5) is maintained by increasing coal dust amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822033.3A CN106246252B (en) | 2016-09-13 | 2016-09-13 | A kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822033.3A CN106246252B (en) | 2016-09-13 | 2016-09-13 | A kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106246252A CN106246252A (en) | 2016-12-21 |
| CN106246252B true CN106246252B (en) | 2018-06-26 |
Family
ID=57598911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610822033.3A Active CN106246252B (en) | 2016-09-13 | 2016-09-13 | A kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106246252B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107103178B (en) * | 2017-03-10 | 2020-09-11 | 天津市电力科技发展有限公司 | Method for calculating peak regulation capacity of once-adjustment air extraction combined cycle heat supply unit |
| CN107191233B (en) * | 2017-05-08 | 2023-04-18 | 华电电力科学研究院有限公司 | Coal-fired power generation peak regulation system for low-load stable combustion and operation method thereof |
| CN107664046B (en) * | 2017-09-22 | 2023-05-30 | 中国华能集团公司 | Energy-saving starting system of IGCC power station |
| CN108266239A (en) * | 2018-03-06 | 2018-07-10 | 上海发电设备成套设计研究院有限责任公司 | A kind of Turbo-generator Set and its method of work with direct-burning heating |
| CN108979770B (en) * | 2018-08-27 | 2023-07-11 | 中国华能集团有限公司 | Integrated coal gasification combined cycle power generation system and method using supercritical carbon dioxide as working medium |
| CN109252842B (en) * | 2018-10-29 | 2024-04-12 | 邓晓亮 | Mixed gas triple power generation system produced by underground supercritical coal gasification |
| CN109251769A (en) * | 2018-10-30 | 2019-01-22 | 中国华能集团清洁能源技术研究院有限公司 | A kind of the dry coal powder gasification IGCC power plant and method of co-production of synthetic natural gas |
| CN110631050B (en) * | 2019-10-29 | 2023-06-02 | 中国华能集团有限公司 | Mixed heating system and method for synthetic gas fuel of gas turbine of IGCC power station |
| CN113914951B (en) * | 2021-10-15 | 2024-01-19 | 西安热工研究院有限公司 | Nuclear power plant peak shaving system based on compressed air energy storage and operation method |
| CN114413245B (en) * | 2021-12-13 | 2023-07-28 | 中国华能集团清洁能源技术研究院有限公司 | IGCC power plant heat accumulation, oxygen storage, energy storage and heat supply peak regulation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043493Y (en) * | 2007-06-22 | 2008-04-02 | 杭州杭氧透平机械有限公司 | Energy recovery device in association circulating power generation system |
| CN101270689A (en) * | 2008-04-30 | 2008-09-24 | 杭州杭氧透平机械有限公司 | Energy conversion and recovering method of coal gasification supercharging association circulating power generation system |
| CN104373164A (en) * | 2014-11-05 | 2015-02-25 | 中国华能集团清洁能源技术研究院有限公司 | Integrated gasification combined cycle (IGCC) power station system with complementary combustion type waste heat boiler and operating method |
| CN104533551A (en) * | 2014-08-29 | 2015-04-22 | 中国华能集团清洁能源技术研究院有限公司 | Waste heat recovery IGCC (integrated gasification combined cycle) combined heat and power generation central heating system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8414667B2 (en) * | 2006-02-10 | 2013-04-09 | Siemens Energy, Inc. | Supercritical pressurization of fuel slurry |
| US20080302106A1 (en) * | 2007-06-07 | 2008-12-11 | Econo-Power International Corporation | Integration of coal fired steam plants with integrated gasification combined cycle power plants |
| CN206144611U (en) * | 2016-09-13 | 2017-05-03 | 中国华能集团公司 | Integrate IGCC and supercritical unit's peak regulation power station |
-
2016
- 2016-09-13 CN CN201610822033.3A patent/CN106246252B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201043493Y (en) * | 2007-06-22 | 2008-04-02 | 杭州杭氧透平机械有限公司 | Energy recovery device in association circulating power generation system |
| CN101270689A (en) * | 2008-04-30 | 2008-09-24 | 杭州杭氧透平机械有限公司 | Energy conversion and recovering method of coal gasification supercharging association circulating power generation system |
| CN104533551A (en) * | 2014-08-29 | 2015-04-22 | 中国华能集团清洁能源技术研究院有限公司 | Waste heat recovery IGCC (integrated gasification combined cycle) combined heat and power generation central heating system and method |
| CN104373164A (en) * | 2014-11-05 | 2015-02-25 | 中国华能集团清洁能源技术研究院有限公司 | Integrated gasification combined cycle (IGCC) power station system with complementary combustion type waste heat boiler and operating method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106246252A (en) | 2016-12-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106246252B (en) | A kind of peak load stations and peak regulating method for integrating IGCC and supercritical unit | |
| CN107664046B (en) | Energy-saving starting system of IGCC power station | |
| CN106050419A (en) | Combustion gas turbine and pressurized water reactor steam turbine combined circulation system | |
| CN201852474U (en) | Combined recovery and power generation system for waste heat in flue gas of sintering machine and waste gas of cooling machine | |
| US6608395B1 (en) | Hybrid combined cycle power generation facility | |
| CN101275470A (en) | Thermal power plant | |
| CN102330967A (en) | Flue gas energy cascade utilization system | |
| CN106761982A (en) | A kind of new part backheating gas turbine combined cycle system | |
| CN206144611U (en) | Integrate IGCC and supercritical unit's peak regulation power station | |
| CN111237732A (en) | Thermoelectric decoupling system and method for gas turbine cogeneration unit | |
| RU2335642C1 (en) | Electric power generator with high-temperature steam turbine | |
| CN104061028B (en) | The double reheat association circulating power generation system that hydrogen-oxygen is combined with coal dust firing and method | |
| CN108150233A (en) | A kind of steam turbine using the novel overcritical mixed working fluid of coalification gas | |
| CN108105748B (en) | The high energy efficiency co-generation unit of mesolow combined heat | |
| CN106194431A (en) | Gas turbine presurized water reactor steam turbine combined cycle without separator | |
| RU101090U1 (en) | ENERGY BUILDING STEAM-GAS INSTALLATION (OPTIONS) | |
| CN204002957U (en) | A kind of Waste Energy In Iron & Steel Enterprises comprehensive high-efficiency power generation system | |
| CN109539216A (en) | A kind of combined generating system of integrated garbage burning boiler and coal-burning boiler | |
| CN202039910U (en) | Combined-cycle cogeneration equipment | |
| CN201810401U (en) | Gas caloric value allocation device in underground coal deployment combined-cycle power plant system | |
| CN217584405U (en) | Concurrent heating formula thermal power generating unit and electric wire netting | |
| CN116025884A (en) | Peak regulation and frequency modulation system of thermal power plant with fused salt heat storage participation | |
| CN109099498A (en) | It is a kind of to couple the technique and method for generating thermoelectricity decoupling by coal dust firing flue gas shunting | |
| CN205482289U (en) | Raw coal steam drying system of power plant suitable for operate in a variable working condition | |
| CN202030802U (en) | Flue gas waste heat utilization device of steel-rolling heating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |