CN105756732B - A kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT - Google Patents
A kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT Download PDFInfo
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- CN105756732B CN105756732B CN201610144314.8A CN201610144314A CN105756732B CN 105756732 B CN105756732 B CN 105756732B CN 201610144314 A CN201610144314 A CN 201610144314A CN 105756732 B CN105756732 B CN 105756732B
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- combustion chamber
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- pressure turbine
- high compression
- heat exchanger
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 210
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 239000012530 fluid Substances 0.000 title claims abstract description 17
- 230000006835 compression Effects 0.000 claims abstract description 95
- 238000007906 compression Methods 0.000 claims abstract description 95
- 238000000605 extraction Methods 0.000 claims abstract description 20
- 230000005532 trapping Effects 0.000 claims abstract description 9
- 230000008676 import Effects 0.000 claims description 65
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000007789 gas Substances 0.000 claims description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 230000008602 contraction Effects 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000003345 natural gas Substances 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 8
- 238000004146 energy storage Methods 0.000 abstract description 8
- 238000010248 power generation Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- 238000011217 control strategy Methods 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 74
- 229910002092 carbon dioxide Inorganic materials 0.000 description 38
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000003303 reheating Methods 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000009738 saturating Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- F01K21/00—Steam engine plants not otherwise provided for
- F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1853—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines coming in direct contact with water in bulk or in sprays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0027—Oxides of carbon, e.g. CO2
Abstract
A kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT is made up of work done subsystem, extraction cycle subsystem and LNG and liquid oxygen supply with CO2 trapping subsystems；Boiler and reheater are substituted with high compression combustion chamber group and reheat combustion chamber group；LNG/ liquid oxygen high pressure-temperature combustion products and feedwater mixing produce H2O/CO2Mixed vapour expansion power generation in turbine set, mixed working fluid exhaust steam condense within the condenser separation moisture after, CO2 it is pre-cooled and boosting after liquefy.Because the inlet pressure and temperature of turbine working medium are higher, and the control strategy of unit load is adjusted using burning and low pressure turbine off-the-line is run in the paddy electricity period, be greatly improved the efficiency of unit；So as to realize the functions such as scale energy storage, zero CO2 and NOx emission, efficient, peak regulation.
Description
Technical field
The present invention relates to a kind of TRT, especially a kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle, which generates electricity, to be filled
Put.
Background technology
Scale energy storage is in ebb of dissolving nuclear power more than needed and receives the intermittent new energy networking side such as wind-powered electricity generation, solar power generation
Face has become following intelligent grid balanced load, abatement peak load fluctuation, ensures the reliable crucial ring of power system security
Section.But hydroenergy storage station is restricted by geographic factor, there is problem in other energy storage methods in terms of economy.Liquefaction is natural
Gas because be readily transported and store be peaking generation main fuel, gas peak regulation generate electricity and scale energy storage will be that power network peak valley is put down
Weighing apparatus, the Main Means of stable operation of power networks.Greenhouse gas emission and the climate change brought and environmental problem based on CO2
By the common concern in the whole world.International Energy Agency is proposed within 2008, and CO2 trappings are to solve climate change with Plugging Technology Applied (CCS)
The necessary technology of problem, should be actively pushed forward.Wherein CO2 trappings are the primary sport technique segments that CCS is implemented.Existing CO2 is caught
Mainly to combustion product processing, there is the problem of trapping process energy resource consumption cost is too big in collection scheme.
The content of the invention
Combustion product is mixed with cycle fluid as working medium it is an object of the present invention to provide a kind of, with high density scale
Energy storage, zero carbon row, zero discharged nitrous oxides, efficiently, peak regulation the features such as power cycle TRT.
The present invention is adopted the following technical scheme that to achieve the above object：
A kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT, including work done subsystem, extraction cycle subsystem
System and LNG and liquid oxygen supply trap subsystem with CO2, wherein,
It is saturating that the work done subsystem includes high compression combustion chamber group, reheat combustion chamber group, high pressure turbine, intermediate pressure turbine, low pressure
Flat, generator A, generator B and valve group；The work done subsystem is used as working medium using H2O/CO2 mixed working fluids；The high compression ignition
It is 4 groups to burn room component, corresponds respectively to 4 air chambers of high pressure turbine, and each high compression combustion chamber group comprises at least a high pressure
Combustion chamber；The high compression combustion chamber is by high compression combustion chamber cylinder, high compression combustion chamber burner, high compression combustion chamber burner inner liner, high pressure
Combustion chamber helical baffles group, high compression combustion chamber annular endplate, high compression combustion chamber atomizer group, high compression combustion chamber first member plate,
High compression combustion chamber water inlet adapter, high compression combustion chamber contraction section and discharge connection composition；The high compression combustion chamber helical baffles group
The spiral that annular space formation cross-sectional flow area between high compression combustion chamber cylinder and high compression combustion chamber burner inner liner gradually increases
Passage；The high compression combustion chamber burner is provided with high compression combustion chamber Imported gas and high compression combustion chamber oxygen inlet；It is described again
Hot chamber group number of packet is identical with high pressure turbine exhaust outlet quantity, and every group of reheat combustion chamber group at least includes 1 reheating combustion
Burn room；The reheat combustion chamber is fired by reheat combustion chamber cylinder, reheat combustion chamber burner, reheat combustion chamber burner inner liner, reheating
Burn room helical baffles group, reheat combustion chamber first member plate, reheat combustion chamber working medium entrance sleeve, reheat combustion chamber contraction section and go out
Mouth adapter composition；The reheat combustion chamber helical baffles group is between reheat combustion chamber cylinder and reheat combustion chamber burner inner liner
The helical duct that annular space formation cross-sectional flow area gradually increases；The reheat combustion chamber burner is provided with reheat combustion chamber day
Right gas import and reheat combustion chamber oxygen inlet；The valve group includes high compression combustion chamber Imported gas valve group, high compression combustion chamber
Oxygen inlet valve group, high compression combustion chamber feed-water inlet valve group, high pressure turbine import valve group, reheat combustion chamber Imported gas valve
Group, reheat combustion chamber oxygen inlet valve group, intermediate pressure turbine import valve group, intermediate pressure turbine extraction valve A, intermediate pressure turbine outlet bypass valve
Group and low pressure turbine import valve group；The high compression combustion chamber contraction section and discharge connection of each high compression combustion chamber pass through high pressure turbine import
Valve group connects 4 groups of air chambers of high pressure turbine, each reheat combustion chamber work exported respectively with reheat combustion chamber group of high pressure turbine
Matter entrance sleeve is connected, and the reheat combustion chamber contraction section and discharge connection of each reheat combustion chamber of reheat combustion chamber group are in
Pressure turbine import valve group is connected with the import of intermediate pressure turbine；
The extraction cycle subsystem includes condenser, low-pressure heater group, high-pressure heater group, condensate pump, feedwater
Pump and draining valve；Condenser cooling water side include water inlet and delivery port, condenser condense water out by condensate pump with it is low
The import of heater group is pressed to be connected, the outlet of low-pressure heater group is connected by feed pump with high-pressure heater group import；Hyperbaric heating
The outlet of device group is connected by high compression combustion chamber feed-water inlet valve group with high compression combustion chamber water inlet adapter；The import of the draining valve with
Condensate pump outlet line is connected；
LNG and the liquid oxygen supply includes LNG storage tank, liquid oxygen storage tank, LNG pump, liquid oxygen pump, CO2 with CO2 trapping subsystems
Compressor, heat exchanger A, heat exchanger B, heat exchanger C and heat exchanger D；LNG storage tank outlet passes through LNG pump and heat exchanger A LNG sides
Import is connected, and heat exchanger A LNG side outlets are connected with heat exchanger D LNG imports, heat exchanger D LNG outlet difference
It is connected by high compression combustion chamber Imported gas valve group with each high compression combustion chamber Imported gas and by reheat combustion chamber day
Right gas import valve group is connected with each reheat combustion chamber Imported gas；Liquid oxygen storage tank outlet is by liquid oxygen pump with heat exchanger B's
Liquid oxygen import is connected, and heat exchanger B liquid oxygen outlet is connected with heat exchanger D liquid oxygen side-entrance, and heat exchanger D liquid oxygen side goes out
Mouth is connected and by reheat combustion chamber by high compression combustion chamber liquid oxygen import valve group with each high compression combustion chamber liquid oxygen import respectively
Liquid oxygen import valve group is connected with each reheat combustion chamber liquid oxygen import；Heat exchanger A CO2 side-entrances are located at more than condenser liquid level
Housing on, heat exchanger A CO2 side outlets are connected by CO2 compressor with heat exchanger B CO2 imports, heat exchanger B CO2
Outlet is connected with heat exchanger C CO2 imports, and heat exchanger C is exported including CO2；
Intermediate pressure turbine first order extraction opening is connected by intermediate pressure turbine extraction valve A with heat exchanger D superheated steam air intake
Connect, the steam inlet with the high-pressure heater of high-pressure heater group is connected by heat exchanger D superheated steam venthole；Middle pressure
The lower steam drain of turbine is connected by intermediate pressure turbine outlet bypass valve group with condenser air intake B, the upper steam discharge of intermediate pressure turbine
Mouth is connected by low pressure turbine import valve group with low pressure turbine import；The outlet of low pressure turbine is connected with condenser air intake A
Connect；Each extraction opening of high pressure turbine, each extraction opening of low pressure turbine and intermediate pressure turbine all respectively with high-pressure heater group and low pressure
Each steam inlet correspondence of heater group is connected.
Further, high pressure turbine and intermediate pressure turbine are used to drive generator A, and low pressure turbine is used to drive generator B.
Further, the CO2 outlets outflow of the heat exchanger C for CO2 liquid.
Compared with prior art, the invention has the advantages that：
1. the need for meeting power network scale energy storage.Liquid oxygen needed for LNG generates electricity was produced and stored in the electric-net valley-electricity period, was stored
Space is small, and energy storage facility investment can be greatly reduced.According to preresearch estimates, oxygen energy storage wasted work processed substantially accounts for unit generation amount
25%~35%；And the thermal efficiency of cycle of generating set then can reach 60%~65%.What it is due to oxygen consumption processed is paddy electricity, and it is sent out
The cycle efficieny and economic benefit of group of motors are far above conventional power generation usage scheme.
Completed 2. the trapping process of carbon dioxide is the condensation process for combining turbine exhaust steam, system is simpler.LNG/ liquid
Oxygen direct combustion feedwater Mixed working fluid cycle using liquid oxygen substitute compressed air, make LNG/ liquid oxygen high pressure-temperature combustion products and to
Water mixing produces H2O/CO2Mixed vapour expansion power generation in turbine set, mixed working fluid exhaust steam condenses separation water within the condenser
After point, the part liquid nitrogen liquid that carbon dioxide is successively boosted using LNG and liquid oxygen precooling and compressor and utilizes air separation unit to produce
Change, so as to realize that the full trapping of carbon dioxide is sealed up for safekeeping or utilizes occasion available for other., can be with because combustion product is as working medium
Near ambient temperature is expanded into turbine, it is thus eliminated that flue gas loss, and pure oxygen burning avoids NOx generation, there is excellent
Good environmental benefit.
3. using with the control strategy of the combustion control power of the assembling unit, i.e., high compression combustion chamber and high pressure turbine air chamber are used
Blocking packet regulation, because combustion chamber is designed by multiple combustor moduleizations, start and stop regulation and control phase in combustion chamber of the invention
There is very strong convenience than boiler, thus it is possible to vary combustion chamber puts into operation quantity and fuel quantity to realize the regulation of unit load.
4. consider in terms of peak load regulation from the material thickness of the turbine high pressure cylinder needed for 30MPa, as gas turbine
Dead halt peak regulation may be unfavorable for its service life, therefore use the operation side of the relatively low turbine low pressure (LP) cylinder off-the-line of operating temperature
Case, using the by-pass line steam discharge of intermediate pressure cylinder steam drain to condenser, achievable unit exists on the premise of equipment safety is ensured
Greater efficiency operation under underload.When turbine low pressure (LP) cylinder off-the-line is run, reheat combustion chamber need not put into operation, and reheat combustion chamber is only made
For passage.
5. thermal efficiency of cycle is higher.In addition to the above-mentioned measure for being beneficial to thermal efficiency of cycle raising, also have benefited from combustion chamber
It is few more than boiler in material consumption, have ready conditions using exotic material costly, so the operation ginseng of apparatus of the present invention
Number is that the inlet pressure and temperature of turbine working medium are higher；In addition unit also has higher efficiency during sub-load.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the embodiment of the present invention；
Fig. 2 is the high compression combustion chamber schematic diagram of the embodiment of the present invention；
Fig. 3 is the reheat combustion chamber schematic diagram of the embodiment of the present invention.
Embodiment
Technical scheme is described in detail with reference to Fig. 1：
Embodiment：
A kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT, it is characterised in that including work done subsystem, return
Thermal cycle subsystem and LNG and liquid oxygen supply trap subsystem with CO2, wherein,
It is saturating that the work done subsystem includes high compression combustion chamber group 1-1, reheat combustion chamber group 1-2, high pressure turbine 1-3, middle pressure
Flat 1-4, low pressure turbine 1-5, generator A 1-6, generator B 1-7 and valve group 1-8；The work done subsystem uses H2O/CO2
Mixed working fluid is used as working medium；The high compression combustion chamber group 1-1 points are 4 groups, correspond respectively to high pressure turbine 1-3 4 air chambers,
Each high compression combustion chamber group 1-1 comprises at least a high compression combustion chamber 1-1-1；The high compression combustion chamber 1-1-1 is by high-pressure combustion
Room cylinder 1-1-1-1, high compression combustion chamber burner 1-1-1-2, high compression combustion chamber burner inner liner 1-1-1-3, high compression combustion chamber spiral
Baffle groups 1-1-1-4, high compression combustion chamber annular endplate 1-1-1-5, high compression combustion chamber atomizer group 1-1-1-6, high compression ignition
Burn room first member plate 1-1-1-7, high compression combustion chamber water inlet adapter 1-1-1-8, high compression combustion chamber contraction section and discharge connection 1-1-1-9
Composition；The high compression combustion chamber helical baffles group 1-1-1-4 is in high compression combustion chamber cylinder 1-1-1-1 and high compression combustion chamber flame
The helical duct that annular space formation cross-sectional flow area between cylinder 1-1-1-3 gradually increases；The high compression combustion chamber burner
1-1-1-2 is provided with high compression combustion chamber Imported gas 1-1-1-10 and high compression combustion chamber oxygen inlet 1-1-1-11；The reheating
Combustion chamber group 1-2 number of packet is identical with high pressure turbine exhaust outlet quantity, and every group of reheat combustion chamber group 1-2 at least includes 1 again
Hot chamber 1-2-1；The reheat combustion chamber 1-2-1 is by reheat combustion chamber cylinder 1-2-1-1, reheat combustion chamber burner 1-2-
1-2, reheat combustion chamber burner inner liner 1-2-1-3, reheat combustion chamber helical baffles group 1-2-1-4, reheat combustion chamber first member plate 1-
2-1-7, reheat combustion chamber working medium entrance sleeve 1-2-1-8, reheat combustion chamber contraction section and discharge connection 1-2-1-9 compositions；Institute
Reheat combustion chamber helical baffles group 1-2-1-4 is stated in reheat combustion chamber cylinder 1-2-1-1 and reheat combustion chamber burner inner liner 1-2-
The helical duct that annular space formation cross-sectional flow area between 1-3 gradually increases；The reheat combustion chamber burner 1-2-1-2
Provided with reheat combustion chamber Imported gas 1-2-1-10 and reheat combustion chamber oxygen inlet 1-2-1-11；The valve group 1-8 includes
High compression combustion chamber Imported gas valve group 1-8-1, high compression combustion chamber oxygen inlet valve group 1-8-2, high compression combustion chamber feed-water inlet
Valve group 1-8-3, high pressure turbine import valve group 1-8-4, reheat combustion chamber Imported gas valve group 1-8-5, reheat combustion chamber oxygen
Import valve group 1-8-6, intermediate pressure turbine import valve group 1-8-7, intermediate pressure turbine extraction valve A 1-8-8, intermediate pressure turbine outlet bypass valve
Group 1-8-9 and low pressure turbine import valve group 1-8-10；Each high compression combustion chamber 1-1-1 high compression combustion chamber contraction section and discharge connection
1-1-1-9 passes through high pressure turbine import valve group 1-8-4 connection high pressure turbines 1-3 4 groups of air chambers, the outlet difference of high pressure turbine
It is connected with reheat combustion chamber group 1-2 each reheat combustion chamber working medium entrance sleeve 1-2-1-8, reheat combustion chamber group 1-2's is each
Reheat combustion chamber 1-2-1 reheat combustion chamber contraction section and discharge connection 1-2-1-9 by intermediate pressure turbine import valve group 1-8-7 with
Intermediate pressure turbine 1-4 import is connected；
The extraction cycle subsystem includes condenser 2-1, low-pressure heater group 2-2, high-pressure heater group 2-3, condensation
Water pump 2-4, feed pump 2-5 and draining valve 2-6；Condenser 2-1 cooling water sides include water inlet 2-1-1 and delivery port 2-1-2, cold
Condenser condenses water out 2-1-4 and is connected by condensate pump 2-4 with low-pressure heater group 2-2 imports, and low-pressure heater group 2-2 goes out
Mouth is connected by feed pump 2-5 with high-pressure heater group 2-3 imports；High-pressure heater group 2-3 is given outlet by high compression combustion chamber
Water inlet valve group 1-8-3 is connected with high compression combustion chamber water inlet adapter 1-1-1-8；The import of the draining valve 2-6 and condensate pump
2-4 outlet lines are connected；
The LNG and liquid oxygen supply and CO2 trapping subsystems include LNG storage tank 3-1, liquid oxygen storage tank 3-2, LNG pump 3-3,
Liquid oxygen pump 3-4, CO2 compressor 3-5, heat exchanger A3-6, heat exchanger B 3-7, heat exchanger C 3-8 and heat exchanger D 3-9；LNG is stored up
Tank 3-1 outlets are connected by LNG pump 3-3 with heat exchanger A LNG side-entrances 3-6-1, heat exchanger A LNG side outlets 3-6-2
It is connected with heat exchanger D LNG imports 3-9-1, heat exchanger D LNG outlet 3-9-2 passes through high compression combustion chamber natural gas respectively
Import valve group 1-8-1 is connected and by reheat combustion chamber Imported gas with each high compression combustion chamber Imported gas 1-1-1-10
Valve group 1-8-5 is connected with each reheat combustion chamber Imported gas 1-2-1-10；Liquid oxygen storage tank 3-2 outlets pass through liquid oxygen pump 3-4
It is connected with heat exchanger B liquid oxygen import 3-7-1, heat exchanger B liquid oxygen outlet 3-7-2 and heat exchanger D liquid oxygen side-entrance 3-
9-3 is connected, and heat exchanger D liquid oxygen side outlet 3-9-4 passes through high compression combustion chamber liquid oxygen import valve group 1-8-2 and each high pressure respectively
Combustion chamber liquid oxygen import 1-1-1-11 is connected and by reheat combustion chamber liquid oxygen import valve group 1-8-6 and each reheat combustion chamber liquid
Oxygen import 1-2-1-11 is connected；Heat exchanger A CO2 side-entrances 3-6-3 is located on housing more than condenser 2-1 liquid levels, is changed
Hot device A CO2 side outlets 3-6-4 is connected by CO2 compressor 3-5 with heat exchanger B CO2 imports 3-7-3, heat exchanger B's
CO2 outlets 3-7-4 is connected with heat exchanger C CO2 imports 3-8-3, and heat exchanger C includes CO2 and exports 3-8-4；
The superheated steam that intermediate pressure turbine first order extraction opening passes through intermediate pressure turbine extraction valve A 1-8-8 and heat exchanger D 3-9
Air intake 3-9-5 is connected, and heat exchanger D superheated steam venthole 3-9-6 adds some high pressure with high-pressure heater group 2-3
The steam inlet of hot device is connected；The lower steam drain of intermediate pressure turbine passes through intermediate pressure turbine outlet bypass valve group 1-8-9 and condensation
Device air intake B 2-1-5 are connected, and the upper steam drain of intermediate pressure turbine passes through low pressure turbine import valve group 1-8-10 and low pressure turbine
1-5 imports are connected；Low pressure turbine 1-5 outlet is connected with condenser air intake A 2-1-3；High pressure turbine, low pressure turbine
Each extraction opening and intermediate pressure turbine other each extraction openings all respectively with high-pressure heater group 2-3's and low-pressure heater group 2-2
Each steam inlet correspondence is connected.
It is preferable to a kind of high pressure turbine 1- of described LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT
3 and intermediate pressure turbine 1-4 is used to drive generator A 1-6, low pressure turbine 1-5 for driving generator B 1-7.The heat exchanger C
CO2 outlets 3-8-4 outflows for CO2 liquid.
The workflow of the present invention is as follows：
Liquid oxygen and liquid nitrogen are prepared in paddy electricity period operation air-separating plant, electric period generating set is saturating by low pressure at non-peak
Sub-load (about 20%) operation of flat 1-5 off-the-lines；At peak, the whole turbines of electric period generating set put into operation；Generating set is transported
During row, LNG/ liquid oxygen burns in high compression combustion chamber group 1-1 and heats mixing feedwater, H2O/CO2 mixed vapours is produced, in turbine
Middle segmentation expansion working generates electricity, and expansion process sets an afterburning reheating；When turbine low pressure (LP) cylinder off-the-line is run, reheat combustion chamber is not
It must put into operation, reheat combustion chamber is only as passage.Turbine exhaust steam is condensed in condenser 2-1, and moisture is separated with CO2, big portion
Fractional condensation is born water flows back to high compression combustion chamber group through water supply heat back system circulation, and part H2O corresponding with combustion product quantity then passes through
Draining valve 2-6 discharge systems.Gaseous state CO2 is arranged in heat exchanger A 3-6 on condenser shell by LNG precoolings by import,
Further cooled, then utilized in heat exchanger C 3-8 by liquid oxygen in heat exchanger B 3-7 after being boosted in compressor 3-5
The part liquid nitrogen of air separation unit production liquefies CO2.To make natural gas and oxygen respectively reach combustor inlet parameter, both
Each combustion chamber is flow to again after being heated in heat exchanger D 3-9 by the superheated steam drawn gas the section drawn from intermediate pressure cylinder, mistake herein
Vapours pressure is relatively low but the degree of superheat is larger, directly heats feedwater and uneconomical.Flame is set in high compression combustion chamber 1-1-1
Cylinder, natural gas surely fires generation HTHP mixed vapour, the ring outside high compression combustion chamber burner inner liner with oxygen in burner inner liner
Shape space injection high-pressure feed water (being cold reheating mixed vapour for reheat combustion chamber), is on the one hand carried out cold to combustion chamber flame drum
But, on the other hand itself heat absorption evaporation, steam water interface will mix work in flame zone outlet spraying and combustion product contact heat transfer
The pressure of matter steam, temperature are adjusted in the safe operation confinement of equipment, then sequentially enter high pressure turbine, reheat combustion chamber,
Expansion working and single reheat in intermediate pressure turbine and low pressure turbine；At non-peak, electric period generating set presses the portion of low pressure turbine off-the-line
When dividing load operation, low pressure turbine import valve group 1-8-10 is closed, and intermediate pressure turbine outlet bypass valve group 1-8-9 is opened, and is mixed and is steamed
Vapour exhaust steam is directly entered condenser 2-1.
Claims (3)
1. a kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT, it is characterised in that including acting subsystem, backheat
Cycle subsystem and LNG and liquid oxygen supply trap subsystem with CO2, wherein,
The acting subsystem includes high compression combustion chamber group (1-1), reheat combustion chamber group (1-2), high pressure turbine (1-3), middle pressure
Turbine (1-4), low pressure turbine (1-5), generator A (1-6), generator B (1-7) and valve group (1-8)；The acting subsystem is adopted
Working medium is used as with H2O/CO2 mixed working fluids；The high compression combustion chamber group (1-1) is divided into 4 groups, corresponds respectively to high pressure turbine (1-
3) 4 air chambers, each high compression combustion chamber group (1-1) comprises at least a high compression combustion chamber (1-1-1)；The high-pressure combustion
Room (1-1-1) is by high compression combustion chamber cylinder (1-1-1-1), high compression combustion chamber burner (1-1-1-2), high compression combustion chamber burner inner liner
(1-1-1-3), high compression combustion chamber helical baffles group (1-1-1-4), high compression combustion chamber annular endplate (1-1-1-5), high compression ignition
Burn room atomizer group (1-1-1-6), high compression combustion chamber first member plate (1-1-1-7), high compression combustion chamber water inlet adapter (1-1-1-
8), high compression combustion chamber contraction section and discharge connection (1-1-1-9) composition；The high compression combustion chamber helical baffles group (1-1-1-
4) annular space between high compression combustion chamber cylinder (1-1-1-1) and high compression combustion chamber burner inner liner (1-1-1-3) forms through-flow
The helical duct that sectional area gradually increases；The high compression combustion chamber burner (1-1-1-2) is entered provided with high compression combustion chamber natural gas
Mouth (1-1-1-10) and high compression combustion chamber oxygen inlet (1-1-1-11)；Reheat combustion chamber group (1-2) number of packet and height
Pressure turbine exhaust mouthful quantity is identical, and every group of reheat combustion chamber group (1-2) at least includes 1 reheat combustion chamber (1-2-1)；It is described again
Hot chamber (1-2-1) is by reheat combustion chamber cylinder (1-2-1-1), reheat combustion chamber burner (1-2-1-2), reheat combustion chamber
Burner inner liner (1-2-1-3), reheat combustion chamber helical baffles group (1-2-1-4), reheat combustion chamber first member plate (1-2-1-7), again
Hot chamber working medium entrance sleeve (1-2-1-8), reheat combustion chamber contraction section and discharge connection (1-2-1-9) composition；It is described again
Hot chamber helical baffles group (1-2-1-4) is in reheat combustion chamber cylinder (1-2-1-1) and reheat combustion chamber burner inner liner (1-2-
The helical duct that annular space formation cross-sectional flow area between 1-3) gradually increases；Reheat combustion chamber burner (the 1-2-
1-2) it is provided with reheat combustion chamber Imported gas (1-2-1-10) and reheat combustion chamber oxygen inlet (1-2-1-11)；The valve group
(1-8) includes high compression combustion chamber Imported gas valve group (1-8-1), high compression combustion chamber oxygen inlet valve group (1-8-2), high compression ignition
Burn room feed-water inlet valve group (1-8-3), high pressure turbine import valve group (1-8-4), reheat combustion chamber Imported gas valve group (1-8-
5), reheat combustion chamber oxygen inlet valve group (1-8-6), intermediate pressure turbine import valve group (1-8-7), intermediate pressure turbine extraction valve A (1-8-
8), intermediate pressure turbine outlet bypass valve group (1-8-9) and low pressure turbine import valve group (1-8-10)；Each high compression combustion chamber (1-1-1)
High compression combustion chamber contraction section and discharge connection (1-1-1-9) pass through high pressure turbine import valve group (1-8-4) connect high pressure turbine
4 groups of air chambers of (1-3), each reheat combustion chamber working medium import of the outlet of high pressure turbine respectively with reheat combustion chamber group (1-2)
Adapter (1-2-1-8) is connected, the reheat combustion chamber contraction section of each reheat combustion chamber (1-2-1) of reheat combustion chamber group (1-2)
And discharge connection (1-2-1-9) is connected by intermediate pressure turbine import valve group (1-8-7) with the import of intermediate pressure turbine (1-4)；
The extraction cycle subsystem includes condenser (2-1), low-pressure heater group (2-2), high-pressure heater group (2-3), solidifying
Bear water pump (2-4), feed pump (2-5) and draining valve (2-6)；Condenser (2-1) cooling water side includes water inlet (2-1-1) and gone out
The mouth of a river (2-1-2), condenser condenses water out (2-1-4) and passes through condensate pump (2-4) and low-pressure heater group (2-2) import phase
Even, low-pressure heater group (2-2) outlet is connected by feed pump (2-5) with high-pressure heater group (2-3) import；High-pressure heater
Group (2-3) outlet passes through high compression combustion chamber feed-water inlet valve group (1-8-3) and high compression combustion chamber water inlet adapter (1-1-1-8) phase
Even；The import of the draining valve (2-6) is connected with condensate pump (2-4) outlet line；
LNG and the liquid oxygen supply includes LNG storage tank (3-1), liquid oxygen storage tank (3-2), LNG pump (3- with CO2 trapping subsystems
3), liquid oxygen pump (3-4), CO2 compressor (3-5), heat exchanger A (3-6), heat exchanger B (3-7), heat exchanger C (3-8) and heat exchanger D
(3-9)；LNG storage tank (3-1) outlet is connected by LNG pump (3-3) with heat exchanger A LNG side-entrances (3-6-1), heat exchanger A
LNG side outlets (3-6-2) be connected with heat exchanger D LNG imports (3-9-1), heat exchanger D LNG outlet (3-9-2) point
It is not connected by high compression combustion chamber Imported gas valve group (1-8-1) with each high compression combustion chamber Imported gas (1-1-1-10)
It is connected with by reheat combustion chamber Imported gas valve group (1-8-5) with each reheat combustion chamber Imported gas (1-2-1-10)
Connect；Liquid oxygen storage tank (3-2) outlet is connected by liquid oxygen pump (3-4) with heat exchanger B liquid oxygen import (3-7-1), heat exchanger B's
Liquid oxygen outlet (3-7-2) is connected with heat exchanger D liquid oxygen side-entrance (3-9-3), heat exchanger D liquid oxygen side outlet (3-9-4)
Be connected respectively with each high compression combustion chamber liquid oxygen import (1-1-1-11) by high compression combustion chamber liquid oxygen import valve group (1-8-2) and
It is connected by reheat combustion chamber liquid oxygen import valve group (1-8-6) with each reheat combustion chamber liquid oxygen import (1-2-1-11)；Heat exchange
Device A CO2 side-entrances (3-6-3) are located on housing more than condenser (2-1) liquid level, heat exchanger A CO2 side outlets (3-6-
4) be connected by CO2 compressor (3-5) with heat exchanger B CO2 imports (3-7-3), heat exchanger B CO2 outlet (3-7-4) with
Heat exchanger C CO2 imports (3-8-3) are connected, and heat exchanger C includes CO2 outlets (3-8-4)；
Intermediate pressure turbine first order extraction opening is entered by intermediate pressure turbine extraction valve A (1-8-8) and heat exchanger D (3-9) superheated steam
Steam ports (3-9-5) is connected, and heat exchanger D superheated steam venthole (3-9-6) adds the high pressure with high-pressure heater group (2-3)
The steam inlet of hot device is connected；The lower steam drain of intermediate pressure turbine by intermediate pressure turbine outlet bypass valve group (1-8-9) with it is cold
Condenser air intake B (2-1-5) is connected, and the upper steam drain of intermediate pressure turbine passes through low pressure turbine import valve group (1-8-10) and low pressure
Turbine (1-5) import is connected；The outlet of low pressure turbine (1-5) is connected with condenser air intake A (2-1-3)；High pressure turbine,
Each extraction opening of low pressure turbine and each extraction opening of intermediate pressure turbine respectively with high-pressure heater group (2-3) and low-pressure heater group
Each steam inlet correspondence of (2-2) is connected.
2. a kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT according to claim 1, it is characterised in that
High pressure turbine (1-3) and intermediate pressure turbine (1-4) are used to drive generator A (1-6), and low pressure turbine (1-5) is used to drive generator
B(1-7)。
3. a kind of LNG/ liquid oxygen direct combustion Mixed working fluid cycle TRT according to claim 2, it is characterised in that
The CO2 outlets of the heat exchanger C（3-8-4）Outflow for CO2 liquid.
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| CN107626183B (en) * | 2016-11-15 | 2024-04-02 | 宁波瑞信能源科技有限公司 | Oxygen-enriched combustion carbon dioxide trapping integrated system suitable for peak-valley load operation of power grid |
| CN109184830B (en) * | 2018-09-14 | 2021-09-07 | 东南大学 | Fuel and oxygen combustion product and CO2Mixed working medium circulation power generation device |
| CN109854381B (en) * | 2019-02-19 | 2021-08-10 | 东南大学 | Mixed working medium power cycle power generation system for CO2 capture and transformation of existing power plant |
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| JPH01208524A (en) * | 1987-11-30 | 1989-08-22 | Michael J Panchuriano | Steam injection type gas turbine engine |
| JP2000337767A (en) * | 1999-05-26 | 2000-12-08 | Air Liquide Japan Ltd | Air separating method and air separating facility |
| US6205762B1 (en) * | 1997-04-15 | 2001-03-27 | Mitsubishi Heavy Industries, Ltd. | Combined cycle power generating plant and method of supplying cooling steam for gas turbine in same |
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| CN101101086A (en) * | 2006-07-05 | 2008-01-09 | 中国科学院工程热物理研究所 | Carbon dioxide zero discharge thermodynamic cycle and procedure using liquefied natural gas cool |
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| CN103628982A (en) * | 2013-11-27 | 2014-03-12 | 暨南大学 | Combined power circulating method capable of catching carbon dioxide (CO2) by using LNG (Liquefied Natural Gas) cold energy and system thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7637109B2 (en) * | 2004-08-02 | 2009-12-29 | American Air Liquide, Inc. | Power generation system including a gas generator combined with a liquified natural gas supply |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01208524A (en) * | 1987-11-30 | 1989-08-22 | Michael J Panchuriano | Steam injection type gas turbine engine |
| US6205762B1 (en) * | 1997-04-15 | 2001-03-27 | Mitsubishi Heavy Industries, Ltd. | Combined cycle power generating plant and method of supplying cooling steam for gas turbine in same |
| JP2000337767A (en) * | 1999-05-26 | 2000-12-08 | Air Liquide Japan Ltd | Air separating method and air separating facility |
| CN1447016A (en) * | 2002-03-22 | 2003-10-08 | 中国科学院工程热物理研究所 | Gas turbine generating system and flow by cooling liquefied natural gas to separate carbon dioxide |
| CN101101086A (en) * | 2006-07-05 | 2008-01-09 | 中国科学院工程热物理研究所 | Carbon dioxide zero discharge thermodynamic cycle and procedure using liquefied natural gas cool |
| CN102102586A (en) * | 2010-06-08 | 2011-06-22 | 丁玉龙 | Peak load power generation device |
| CN103628982A (en) * | 2013-11-27 | 2014-03-12 | 暨南大学 | Combined power circulating method capable of catching carbon dioxide (CO2) by using LNG (Liquefied Natural Gas) cold energy and system thereof |
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| CN105756732A (en) | 2016-07-13 |
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