CN116447510A - Device system and method for recycling liquid hydrogen gasification cold energy - Google Patents
Device system and method for recycling liquid hydrogen gasification cold energy Download PDFInfo
- Publication number
- CN116447510A CN116447510A CN202310455662.7A CN202310455662A CN116447510A CN 116447510 A CN116447510 A CN 116447510A CN 202310455662 A CN202310455662 A CN 202310455662A CN 116447510 A CN116447510 A CN 116447510A
- Authority
- CN
- China
- Prior art keywords
- water
- liquid hydrogen
- hydrogen
- unit
- cold
- 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.)
- Pending
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 586
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 586
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 584
- 239000007788 liquid Substances 0.000 title claims abstract description 501
- 238000002309 gasification Methods 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000004064 recycling Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 577
- 238000003860 storage Methods 0.000 claims abstract description 195
- 238000001816 cooling Methods 0.000 claims abstract description 120
- 239000000498 cooling water Substances 0.000 claims abstract description 87
- 239000007789 gas Substances 0.000 claims abstract description 84
- 238000012544 monitoring process Methods 0.000 claims abstract description 56
- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 239000002826 coolant Substances 0.000 claims description 196
- 239000003507 refrigerant Substances 0.000 claims description 92
- 238000002955 isolation Methods 0.000 claims description 90
- 230000001105 regulatory effect Effects 0.000 claims description 74
- 238000000926 separation method Methods 0.000 claims description 39
- 238000010992 reflux Methods 0.000 claims description 26
- 238000011084 recovery Methods 0.000 claims description 25
- 238000009826 distribution Methods 0.000 claims description 22
- 238000009825 accumulation Methods 0.000 claims description 21
- 238000001704 evaporation Methods 0.000 claims description 19
- 230000008020 evaporation Effects 0.000 claims description 19
- 230000001502 supplementing effect Effects 0.000 claims description 19
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 13
- 238000004458 analytical method Methods 0.000 claims description 8
- 238000004364 calculation method Methods 0.000 claims description 8
- 238000011156 evaluation Methods 0.000 claims description 7
- 239000000470 constituent Substances 0.000 claims description 6
- 238000011068 loading method Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 230000002209 hydrophobic effect Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 19
- 239000003570 air Substances 0.000 description 225
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 14
- 239000013589 supplement Substances 0.000 description 11
- 238000011049 filling Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000001294 propane Substances 0.000 description 7
- 238000005086 pumping Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 150000002431 hydrogen Chemical class 0.000 description 6
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000004146 energy storage Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 235000011089 carbon dioxide Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000001282 iso-butane Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000008400 supply water Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011143 downstream manufacturing Methods 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
- F17C9/02—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure with change of state, e.g. vaporisation
- F17C9/04—Recovery of thermal energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
- F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
- F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/12—Cooling of plants
- F02C7/14—Cooling of plants of fluids in the plant, e.g. lubricant or fuel
- F02C7/141—Cooling of plants of fluids in the plant, e.g. lubricant or fuel of working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/005—Pipe-line systems for a two-phase gas-liquid flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/14—Conveying liquids or viscous products by pumping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/013—Single phase liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/01—Propulsion of the fluid
- F17C2227/0128—Propulsion of the fluid with pumps or compressors
- F17C2227/0135—Pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
- F17C2227/0309—Heat exchange with the fluid by heating using another fluid
- F17C2227/0316—Water heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0302—Heat exchange with the fluid by heating
- F17C2227/0309—Heat exchange with the fluid by heating using another fluid
- F17C2227/0323—Heat exchange with the fluid by heating using another fluid in a closed loop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0337—Heat exchange with the fluid by cooling
- F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
- F17C2227/0348—Water cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0337—Heat exchange with the fluid by cooling
- F17C2227/0341—Heat exchange with the fluid by cooling using another fluid
- F17C2227/0355—Heat exchange with the fluid by cooling using another fluid in a closed loop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0367—Localisation of heat exchange
- F17C2227/0388—Localisation of heat exchange separate
- F17C2227/0393—Localisation of heat exchange separate using a vaporiser
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0631—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/04—Reducing risks and environmental impact
- F17C2260/046—Enhancing energy recovery
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to a device system and a method for recycling liquid hydrogen gasification cold energy, wherein the device system comprises a liquid hydrogen storage and supply unit, a hydrogen post-treatment unit, a liquid hydrogen gasification unit, an air inlet cooling unit, a water cold storage unit, a circulating cooling water unit and a monitoring control unit. The invention comprehensively adopts the air inlet cooling technology, the intermediate medium gasification technology and the water cold storage technology of the hydrogen-burning gas turbine, properly reduces the air inlet temperature of the hydrogen-burning gas turbine unit, improves the power and efficiency of the hydrogen-burning gas turbine in a high-temperature operation environment, realizes the recycling of the gasification cold energy of the liquid hydrogen fuel, improves the comprehensive utilization level of the energy of the hydrogen-burning gas turbine combined cycle power plant, and meets the advanced technical requirements of a novel power system taking new energy as a main body.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a device system and a method for recycling liquid hydrogen gasification cold energy.
Background
Currently, the specific gravity of clean energy is gradually increased, and hydrogen energy becomes an important component of an energy system. The development of the hydrogen-burning gas turbine can further solve the problem of energy safety, and meanwhile, the development resistance of the gas turbine industry caused by natural gas tension is solved, so that the hydrogen-burning gas turbine plays a key supporting role in constructing a novel power system taking new energy as a main body.
One of the preferred modes of use and storage of hydrogen as a fuel or as an energy carrier is liquid hydrogen. Hydrogen-blended gas turbines typically burn natural gas blended with hydrogen, and liquid hydrogen gasification is one of the important links when the hydrogen-blended gas turbine uses liquid hydrogen fuel. CN 114738662a discloses a renewable energy comprehensive utilization system and method based on liquid hydrogen energy storage, the system comprises: the electrolytic hydrogen production device is connected with the renewable energy power supply device, and the renewable energy power supply device supplies electric energy to the electrolytic hydrogen production device for electrolytic hydrogen production; a hydrogen liquefying device connected with a hydrogen output pipeline of the electrolytic hydrogen production device, wherein the hydrogen liquefying device is used for liquefying hydrogen; the liquid hydrogen storage device is connected with the liquid hydrogen output end of the hydrogen liquefying device and is used for storing liquid hydrogen; and the liquid hydrogen gasification device is connected with the output end of the liquid hydrogen storage device and is used for gasifying liquid hydrogen. However, the liquid hydrogen releases more cold energy in the gasification process, but the invention does not recycle the cold energy of the liquid hydrogen.
The liquid hydrogen cold energy can be used for preparing liquid CO 2 And dry ice, a freezing warehouse and the like, and has great economic benefits. CN 114087846a discloses a device for producing dry ice by coupling photoelectric hydrogen production energy storage and cold energy recovery and a use method, comprising a photoelectric conversion liquid hydrogen energy storage unit: the photoelectric conversion liquid hydrogen energy storage unit is used for preparing hydrogen by water electrolysis, and surplus hydrogen meeting the downstream process requirement is liquefied in the unit to output liquid hydrogen so as to convert intermittent photoelectric energy into hydrogen energy for storage; when the hydrogen production by electrolysis of water is insufficient but industrial hydrogen is continuous, the industrial tail gas is used for purifying CO 2 And air-separated nitrogen are respectively recovered to obtain high-grade and low-grade cold energy of low-temperature liquid hydrogen serving as cold source in the unit, and liquid nitrogen and liquid CO are output 2 The method is respectively used for photoelectric conversion liquid hydrogen energy storage units and dry ice manufacture, and liquid hydrogen is subjected to reheating and is fed into downstream processes. The invention can realize intermittent photoelectric storage in the form of liquid hydrogen, optimize the recovery liquid hydrogen cooling capacity for preparing liquid nitrogen and dry ice, and has certain limitation in the application field because of the need of applying a complex photoelectric conversion device.
Accordingly, in view of the shortcomings of the prior art, it is desirable to provide a device system that can increase the power and operating efficiency of a hydrogen-fired gas turbine and achieve the recycling of the cold energy of liquid hydrogen gasification.
Disclosure of Invention
The invention aims to provide a device system and a method for recycling liquid hydrogen gasification cold energy, which comprehensively adopt an air inlet cooling technology, an intermediate medium gasification technology and a water cold storage technology of a hydrogen-burning gas turbine to fully recycle the gasification cold energy of liquid hydrogen fuel of the hydrogen-burning gas turbine, and solve the problem of cold energy waste in the process of utilizing the liquid hydrogen fuel of the hydrogen-burning gas turbine.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
in a first aspect, the invention provides a device system for recycling cold energy of liquid hydrogen gasification, which comprises a liquid hydrogen storage and supply unit, a hydrogen post-treatment unit, a liquid hydrogen gasification unit, an air inlet cooling unit, a water cold storage unit, a circulating cooling water unit and a monitoring control unit;
The liquid hydrogen storage and supply unit is respectively connected with the hydrogen post-treatment unit and the liquid hydrogen gasification unit, and the hydrogen post-treatment unit is connected with the liquid hydrogen gasification unit; the liquid hydrogen gasification unit is connected with the air inlet cooling unit, and the air inlet cooling unit is respectively and independently connected with the water cold accumulation unit and the circulating cooling water unit;
the monitoring control unit is used for collecting and monitoring temperature, pressure, flow and valve position signals of the device system and remotely transmitting the signals to the control system.
According to the device system provided by the invention, the gasification cold energy of the liquid hydrogen fuel is used for cooling the air of the air inlet system of the hydrogen-burning gas turbine, so that the air inlet temperature of the unit is properly reduced, the power generation power of the hydrogen-burning gas turbine combined cycle unit under the basic load is improved, the energy utilization efficiency of the hydrogen-burning gas turbine combined cycle unit system is improved, the recycling of the liquid hydrogen gasification cold energy of the hydrogen-burning gas turbine is realized, the operation cost of a hydrogen-burning gas turbine power plant is reduced, and good social benefit and economic benefit are realized; the device system provided by the invention is suitable for the application scene of the combined cycle power plant of the hydrogen-gas turbine, improves the comprehensive utilization level of the energy of the combined cycle power plant of the hydrogen-gas turbine, and can meet the advanced technical requirements of a novel power system taking new energy as a main body.
Preferably, the liquid hydrogen storage and supply unit includes a liquid hydrogen storage device and a liquid hydrogen return flow path, and the liquid hydrogen storage device is connected to the liquid hydrogen supply flow path.
The liquid hydrogen storage and supply unit is used for storing, pressurizing, switching on and off and regulating the flow of the liquid hydrogen fuel so as to meet the requirement of supplying liquid hydrogen to the liquid hydrogen gasification unit; the liquid hydrogen storage device is used for storing liquid hydrogen fuel for combustion of the hydrogen-combustion gas turbine.
Preferably, the liquid hydrogen supply flow path includes a liquid hydrogen supply check valve, a liquid hydrogen supply pump, a liquid hydrogen supply quick-closing isolation valve, and a liquid hydrogen supply flow rate regulating valve, which are connected in this order.
The liquid hydrogen supply check valve is used for preventing liquid hydrogen pumped by the liquid hydrogen supply pump from converging to the liquid hydrogen storage device; the liquid hydrogen supply pump is used for pumping out liquid hydrogen from the liquid hydrogen storage device and pumping the liquid hydrogen to the liquid hydrogen gasification unit in a pressurizing mode; the liquid hydrogen supply quick-closing isolation valve is used for quickly switching on and off the liquid hydrogen supply to the liquid hydrogen gasification unit, and the quick-closing time of the quick-closing isolation valve is less than 1s; the liquid hydrogen supply flow regulating valve is used for regulating the flow of liquid hydrogen entering the liquid hydrogen gasification unit.
Preferably, the liquid hydrogen reflux flow path comprises a liquid hydrogen reflux isolation valve, a liquid hydrogen reflux flow regulating valve and a liquid hydrogen reflux check valve which are connected in sequence, and the liquid hydrogen reflux check valve is connected with the liquid hydrogen supply check valve.
The liquid hydrogen reflux isolation valve is used for isolating a liquid hydrogen flow path of reflux of the gas-liquid separator in the hydrogen post-treatment unit; the liquid hydrogen reflux flow regulating valve is used for regulating the liquid hydrogen flow of the reflux of the gas-liquid separator in the hydrogen post-treatment unit; the liquid hydrogen return check valve is used for preventing liquid hydrogen after the liquid hydrogen is supplied to the check valve from entering the liquid hydrogen return flow path.
Preferably, the inlet of the liquid hydrogen storage device is provided with a liquid hydrogen unloading isolation valve, and the top of the liquid hydrogen storage device is provided with a liquid hydrogen storage device safety rupture disc.
The liquid hydrogen unloading isolation valve is used for isolating a hydrogen unloading flow path between a liquid hydrogen source outside the gas turbine plant and the liquid hydrogen storage device; the liquid hydrogen storage device safety rupture disc is used for internal overpressure protection of the liquid hydrogen storage device.
Preferably, the liquid hydrogen supply pump is further connected with a liquid hydrogen supply pump outlet overflow valve, the outlet liquid hydrogen pressure of the liquid hydrogen supply pump exceeds the set value of the liquid hydrogen supply pump outlet overflow valve, and part of liquid hydrogen overflows back to the liquid hydrogen storage device.
Preferably, the hydrogen post-treatment unit comprises a hydrogen gas-liquid separation device, and the hydrogen gas-liquid separation device is connected with the liquid hydrogen gasification unit; the bottom of the hydrogen gas-liquid separation device is connected with the liquid hydrogen reflux flow path, and the top of the hydrogen gas-liquid separation device is connected with a hydrogen gas supply flow path.
The hydrogen post-treatment unit is used for gas-liquid separation of gasified hydrogen and liquid hydrogen two-phase fluid, supply on-off of hydrogen, flow regulation, pressure regulation and filtration, and provides hydrogen meeting the requirements of specific pressure, temperature and flow parameters for the hydrogen-burning gas turbine fuel system; the hydrogen gas-liquid separation device is used for receiving the gas-liquid hydrogen fluid from the liquid hydrogen gasification unit and carrying out gas-liquid separation, the separated pure hydrogen is led out from the top of the hydrogen gas-liquid separation device, and the separated liquid hydrogen is temporarily stored at the bottom of the hydrogen gas-liquid separation device.
Preferably, the hydrogen gas-liquid separation device is provided with a liquid level meter for monitoring the liquid hydrogen level separated by the hydrogen gas-liquid separation device in real time and setting a liquid level overrun alarm module.
Preferably, the hydrogen supply flow path includes a first safety relief device, a hydrogen supply quick-closing valve, a hydrogen supply flow control valve, a hydrogen supply flow meter, a hydrogen supply pressure reducing valve, a hydrogen supply outlet filter, a second safety relief device, and a hydrogen supply outlet isolation valve, which are connected in order.
The first safety relief device is used for overpressure safety protection of equipment and pipelines between the hydrogen supply quick-closing valve and the liquid hydrogen supply flow regulating valve; the hydrogen supply quick-closing valve is used for quickly switching on and off hydrogen supply when the fuel system of the gas turbine needs to be shut down in emergency, and the quick-closing time of the hydrogen supply quick-closing valve is less than 1s; the hydrogen supply flow control valve is used for adjusting the amount of hydrogen entering the fuel system of the gas turbine in real time according to flow feedback of the hydrogen supply flow meter and a command of the control system of the gas turbine; the hydrogen supply flowmeter comprises a turbine flowmeter and/or an ultrasonic flowmeter and is used for measuring feedback hydrogen supply flow in real time; the hydrogen supply pressure reducing valve is used for regulating the hydrogen supply pressure to the hydrogen supply pressure required by the fuel system of the gas turbine; the hydrogen supply outlet filter is used for ensuring the cleanliness of downstream hydrogen; the second safety relief device is used for overpressure safety protection of equipment and pipelines between the hydrogen supply quick-closing valve and the hydrogen supply outlet isolation valve; the hydrogen supply outlet isolation valve is used for opening and closing a flow path between the hydrogen post-treatment unit and the fuel system of the gas turbine, and is fully opened in normal operation, and the system is shut down, overhauled or closed in emergency.
Preferably, the liquid hydrogen gasification unit comprises a liquid hydrogen gasification device, a condensation area is arranged at the top of an inner cavity of the liquid hydrogen gasification device, and an evaporation area is arranged at the bottom of the inner cavity.
The liquid hydrogen gasification unit adopts an intermediate medium evaporation condenser mode, liquid hydrogen from the liquid hydrogen storage and supply unit is heated by utilizing the backwater of the refrigerant water from the air inlet cooling unit, and the liquid hydrogen gasification is realized by an intermediate heat transfer medium heat exchange mode.
Preferably, the intermediate medium comprises any one or a combination of at least two of propane, isobutane, ammonia or freon, typically but not limited to combinations comprising propane and isobutane, ammonia and freon, or propane, isobutane, ammonia and freon.
Preferably, the condensation area is provided with a liquid hydrogen gasification heat exchange tube, an inlet of the liquid hydrogen gasification heat exchange tube is connected with the liquid hydrogen supply flow path, and an outlet of the liquid hydrogen gasification heat exchange tube is connected with the hydrogen gas-liquid separation device.
The liquid hydrogen gasification heat exchange tube adopts a low-inlet high-outlet multilayer coil arrangement mode, and condensed hot gas flowing through an intermediate medium outside the liquid hydrogen absorption tube in the tube is converted into hydrogen.
Preferably, an intermediate medium liquid collecting tank is arranged between the condensation area and the evaporation area, an intermediate medium gas distributing pipe is arranged at the top of the intermediate medium liquid collecting tank, and an intermediate medium liquid distributing pipe is arranged at the bottom of the intermediate medium liquid collecting tank.
The intermediate medium liquid collecting tank is used for collecting intermediate medium liquid condensed in the condensing area.
Preferably, the top end of the intermediate medium gas distribution pipe is provided with a liquid blocking cover so as to prevent upper intermediate medium liquid from directly entering the evaporation area of the liquid hydrogen gasification device through the intermediate medium gas distribution pipe.
Preferably, circular holes with diameters of 1-3mm are uniformly formed in the circumferential direction of the intermediate medium gas distribution pipe, for example, the circular holes can be 1mm, 2mm or 3mm, but the circular holes are not limited to the enumerated values, and other non-enumerated values in the numerical range are applicable.
The round holes are used for distributing and rectifying the middle medium vapor so as to ensure that the middle medium vapor from the evaporation area uniformly enters the condensation area and improve the heat exchange efficiency of the condensation area.
The round hole is positioned above the liquid level of the middle medium liquid collecting tank so as to prevent liquid from directly entering the evaporation area along the opening of the gas distribution pipe and affecting the heat exchange effect of the evaporation area.
Preferably, an intermediate medium spray header is arranged at the bottom of the intermediate medium liquid distribution pipe.
The middle medium liquid distribution pipe is used for receiving middle medium liquid from the middle medium liquid collection tank and adopting a multi-branch non-equidistant annular structure to realize uniform liquid distribution in a horizontal plane; and after receiving the liquid in the liquid distribution pipe, the intermediate medium spray header sprays the liquid to the outer surface of the refrigerant water heat exchange pipe below.
Preferably, the evaporation area is provided with a chilled water heat exchange tube, and an inlet and an outlet of the chilled water heat exchange tube are respectively and independently connected with the air inlet cooling unit.
The chilled water heat exchange tube adopts a multi-layer coil arrangement mode, and the chilled water flowing through the interior is effectively cooled due to the vaporization latent heat of evaporation of an intermediate medium outside the tube.
Preferably, a safety rupture disk of the liquid hydrogen gasification device is arranged at the top of the shell of the liquid hydrogen gasification device.
When the liquid hydrogen gasification device works, liquid hydrogen gasification cold energy in the liquid hydrogen gasification heat exchange tube is absorbed by middle medium vapor at the upper part to be condensed into liquid, the liquid hydrogen gasification cold energy is collected in a middle medium liquid collecting tank and sprayed onto the refrigerant water heat exchange tube of an evaporation zone at the lower part of the device through a middle medium spray header, the middle medium liquid evaporates and absorbs heat to become vapor, and meanwhile, the refrigerant water in the refrigerant water heat exchange tube is cooled; when the internal pressure of the liquid hydrogen gasification device exceeds the safety limit, the safety rupture disk of the liquid hydrogen gasification device is damaged, and an intermediate medium in the device is discharged to a designated safety area of a factory through a discharge pipeline for harmless treatment.
Preferably, the air inlet cooling unit comprises an air inlet cooling refrigerant water supply flow path, an air inlet cooler and an air inlet cooling refrigerant water return flow path which are connected in sequence.
The inlet air cooling unit cools inlet air of the hydrogen-burning gas turbine compressor by using coolant water from the liquid hydrogen gasification unit, improves power and efficiency of the gas turbine in high-temperature weather, and effectively recycles liquid hydrogen gasification cold energy of the hydrogen-burning gas turbine.
Preferably, the air inlet cooling chilled water supply flow path comprises a chilled water circulating pump, a chilled water supply check valve, a chilled water supply isolation valve and a chilled water supply flowmeter which are connected in sequence, and the chilled water supply isolation valve is also connected with a cold storage water storage isolation valve.
The cold-medium water circulating pump is used for pressurizing low-temperature cold-medium water from the cold-medium water heat exchange tube, overcoming the resistance such as the resistance along the way and the height difference of the inlet cooling cold-medium water supply flow path and providing sufficient power for the circulation of the cold-medium water supply loop; the chilled water supply check valve is used for pumping an inlet or a water cold accumulation unit or a circulating cooling water unit when the chilled water circulating pump is in low load or is out of operation; the coolant water supply isolation valve is used for switching on and off coolant water supply flow paths for supplying water; the chilled water supply flow meter is used for monitoring and measuring the flow of low-temperature chilled water entering the inlet cooler.
Preferably, the coolant water circulating pump is further connected with a coolant water circulating pump outlet overflow valve, the pressure of the coolant water circulating pump exceeds the set value of the coolant water circulating pump outlet overflow valve, and part of coolant water overflows to the water cold storage unit and/or the circulating cooling water unit.
Preferably, the chilled water circulating pump is also connected with a chilled water diversion isolation valve.
Preferably, the chilled water circulating pump is connected with an outlet of the chilled water heat exchange tube.
Preferably, the chilled water supply flow meter is also connected with a cold accumulation water supply isolation valve.
Preferably, an intake air filter is provided upstream of the intake air cooler in the air flow direction.
The air inlet cooler adopts a high-efficiency air-water heat exchanger mode, refrigerant water flows through the pipes, fins are arranged outside the pipes to increase air side heat exchange efficiency, seamless heat exchange pipes without joints are adopted inside air channels of the air inlet system, and all the pipes are arranged outside the air channels of the air inlet system, so that the refrigerant water is prevented from entering a gas compressor due to the fact that the joints are not tightly sealed; the air inlet cooler is arranged at the downstream of the air inlet filter in the air flow direction, and prevents the filter element of the air inlet filter from being wet blocked due to the increase of relative humidity after air cooling.
Preferably, the air inlet cooling refrigerant water return flow path comprises an air inlet cooler return flow regulating valve, an air inlet cooler return isolation valve and an air inlet cooler return flow meter which are connected in sequence.
The return water flow regulating valve of the air inlet cooler is used for controlling the quantity of the refrigerant water passing through the air inlet cooler; the air inlet cooler backwater isolation valve is used for switching on and off the backwater of the refrigerant water of the air inlet cooler and isolating the refrigerant water of the air inlet cooler during the shutdown, overhaul and maintenance of the air inlet cooler; the intake cooler backwater flowmeter is used for monitoring and metering the quantity of the refrigerant water passing through the intake cooler.
Preferably, the air inlet cooling coolant water return flow path is also provided with a coolant water drain isolation valve.
And a coolant drainage isolation valve is arranged at the lowest point of the air inlet cooling coolant return water flow path and is used for draining the coolant loop during the shutdown, overhauling and maintenance of the air inlet cooler.
Preferably, the cold-storage water supply isolation valve, the cold-storage water storage isolation valve and the refrigerant water circulation pump outlet overflow valve are respectively connected with the water cold-storage unit.
Preferably, the outlet overflow valve, the coolant diversion isolation valve and the coolant drainage isolation valve of the coolant circulating pump are respectively connected with the circulating cooling water unit.
Preferably, the water cold accumulation unit comprises a cold accumulation water flow path, a water cold accumulation device and a cold accumulation water supply flow path which are connected in sequence.
The water cold storage unit is used for receiving the excessive refrigerant water cooling capacity of the liquid hydrogen gasification unit which cannot be absorbed in the short-time intake cooling unit, supplementing the refrigerant water cooling capacity in time when the intake cooling unit is in a cold peak, balancing the peak-valley difference of the short-time intake cooling capacity, and improving the demand response of the intake cooling of the gas turbine and the operation stability of the liquid hydrogen gasification device.
Preferably, the cold storage water flow path comprises a cold storage water flow regulating valve and a cold storage water flow dividing flowmeter which are sequentially connected, and the cold storage water flow regulating valve is connected with the cold storage water storage isolation valve.
The cold-storage water diversion flow regulating valve is used for regulating diversion refrigerant flow entering the water cold-storage device; the cold-storage water flow-dividing flowmeter is used for monitoring and measuring the flow of divided refrigerant water entering the water cold-storage device.
Preferably, the cold-storage water supply flow path comprises a cold-storage water supply pump, a cold-storage water supply check valve and a cold-storage water supply flow regulating valve which are sequentially connected, and the cold-storage water supply flow regulating valve is connected with the cold-storage water supply isolation valve.
The cold-storage water feed pump is used for sucking low-temperature cold-storage water in the water cold-storage unit and feeding the low-temperature cold-storage water to the air inlet cooler; the cold-storage water supply check valve is used for preventing the refrigerant water supplied to the air inlet cooler from flowing back; the cold accumulation water supply water flow regulating valve is used for regulating the low-temperature cold accumulation water flow entering the air inlet cooler.
Preferably, the cold water supply pump is further connected with a cold water supply pump outlet overflow valve, the water supply pressure of the cold water exceeds the set value of the cold water supply pump outlet overflow valve, and part of the cold water overflows back to the cold water storage device.
Preferably, the chilled water storage device is further connected with a first overflow isolation valve of the chilled water, and the first overflow isolation valve of the chilled water is connected with an outlet overflow valve of the chilled water circulating pump.
The first overflow isolation valve for the coolant is used for switching on and off overflow coolant from the overflow valve at the outlet of the coolant circulating pump.
Preferably, the circulating cooling water unit comprises a closed cooling water device, wherein the closed cooling water device is respectively and independently connected with a cooling water supply and supplementing flow path, a cooling water diversion flow path, a cooling water overflow backwater flow path and a cooling water circulating pump, and the cooling water circulating pump is connected with a gas turbine condenser.
The circulating cooling water unit is used for filling initial coolant water into a coolant water loop of the air inlet cooling unit and supplementing coolant water in the operation process, receiving liquid hydrogen gasification cooling capacity which can not be absorbed after the air inlet cooling unit and the water cold storage unit jointly act, and receiving coolant water overflowed from an outlet of a coolant water circulating pump in the air inlet cooling unit to return to the closed cooling water device.
Preferably, the coolant water supply and supplement flow path comprises a coolant water supplement flow regulating valve and a coolant water supplement flow meter which are connected in sequence, and the coolant water supplement flow meter is connected with the coolant water drain isolation valve.
The cold water supply and supplement flow path is used for filling initial cold water into a cold water loop of the air inlet cooling unit and supplementing cold water in the running process; the refrigerant water supply and supplement flow regulating valve is used for regulating the initial refrigerant water filling and the refrigerant water supplement quantity in operation entering the refrigerant water heat exchange pipe; the coolant water supplementing flow meter is used for monitoring and measuring the initial coolant water filling and coolant water supplementing quantity in running of the coolant water heat exchange tube.
Preferably, the refrigerant water diversion flow path comprises a refrigerant water diversion flow meter and a refrigerant water diversion flow regulating valve which are connected in sequence, and the refrigerant water diversion flow meter is connected with the refrigerant water diversion isolation valve; the cooling water circulation pump is characterized in that a diversion branch is led out from the upstream of the cooling water diversion flow regulating valve, the diversion branch comprises a cooling water diversion flow regulating valve and a cooling water diversion flow meter which are sequentially connected, and the cooling water diversion flow meter is connected with the cooling water circulation pump.
The coolant water diversion flowmeter is used for monitoring and measuring the total diversion water quantity of the coolant water diversion flow path; the refrigerant water diversion flow regulating valve is used for regulating the low-temperature refrigerant water diversion flow which directly flows back to the closed cooling water device; the cooling water diversion flow regulating valve is used for regulating the flow of low-temperature refrigerant water directly injected into the circulating water system of the gas condenser of the gas turbine; the cooling water diversion flowmeter is used for monitoring and measuring the flow rate of low-temperature refrigerant water directly injected into the circulating water system of the gas condenser of the gas turbine; the cooling water circulating pump is used for pumping low-temperature coolant water flow which is directly injected into the circulating water system of the turbine condenser to the turbine condenser.
Preferably, the coolant overflow backwater flow path is provided with a coolant second overflow isolation valve for switching on and off overflow coolant flowing back to the closed cooling water device from an outlet of the coolant circulation pump outlet overflow valve.
The monitoring control unit is used for collecting and monitoring parameter signals such as temperature, pressure, flow, valve position and the like in the device system, and relevant signals are remotely transmitted to the power plant DCS control system and are monitored by the DCS monitoring system.
In a second aspect, the present invention provides a method for recycling cold energy of liquid hydrogen gasification by using the device system in the first aspect, the method comprising:
the constituent units of the plant system are operated in different combinations based on the different hydrogen loading ratios of the gas turbine generator sets.
The method provided by the invention is applicable to different liquid hydrogen gasification cold recovery modes for the hydrogen-fired gas turbine generator sets with different hydrogen loading ratios, and allows the liquid hydrogen storage supply unit, the hydrogen post-treatment unit, the liquid hydrogen gasification unit, the air inlet cooling unit, the water cold storage unit and the circulating cooling water unit to be applied to different combined operation modes.
Preferably, the operation sets an intake air cooling down triggering condition and an intake air cooling down releasing condition.
Preferably, the triggering condition of the air inlet cooling and shutdown is satisfied, the air inlet cooling unit and the water cold storage unit are stopped to ensure the operation safety of the hydrogen-burning gas turbine, and the liquid hydrogen gasification cold energy recovered by the liquid hydrogen gasification unit is completely consumed by the circulating cooling water unit.
Preferably, the charge air cooling off-stream triggering condition is: t (T) a1 T is less than or equal to 2 DEG C a2 -T c Less than 2 ℃; wherein T is a1 For charge air cooler inlet air temperature, T a2 For charge air cooler outlet air temperature, T c Is the total temperature of the inlet section of the air inlet chamber of the air compressor.
Preferably, the condition of releasing the cooling and stopping of the air intake is satisfied, the air intake cooling unit and the water cold accumulation unit are restarted, a device system for recycling the cold energy of the liquid hydrogen gasification releases a limiting mode, and the constituent units of the device system are in a state to be operated and are controlled by a power plant DCS, so that different combined operation modes are applicable.
Preferably, the charge air cooling outage cancellation condition is: t (T) a1 > 2 ℃ or T a2 -T c ＞2℃。
In a third aspect, the present invention provides a method for performing energy balance analysis and cold recovery effect evaluation by using the device system in the first aspect, where the method includes:
And the efficiency of the liquid hydrogen gasification unit is adopted to evaluate the heat exchange effect of the air inlet cooler and the perfection degree of the equipment technology, and the energy balance of the device system is established based on the water flow balance relation of the device system.
Preferably, the calculation formula of the intake air cold energy recovery efficiency is as follows:
wherein:
η A -intake air cooling capacity recovery efficiency,%;
c a -air specific heat capacity, kJ/(kg·k);
m a2 the amount of charge air cooler outlet air per unit time,kg/s；
T a1 -inlet air temperature of the inlet air cooler, K;
T a2 -inlet cooler outlet air temperature, K;
m h2 -hydrogen yield per unit time of liquid hydrogen gasification unit, kg/s;
h h2 -hydrogen mass enthalpy at the hydrogen outlet of the hydrogen-liquid separation device, kJ/kg;
h h1 -liquid hydrogen mass enthalpy at the liquid hydrogen inlet of the liquid hydrogen gasification heat exchange tube, kJ/kg;
wherein h is h2 ＝f(T h2 ，P h2 ) The temperature T of the hydrogen at the hydrogen outlet of the hydrogen-liquid separation device h2 And pressure P h2 Determining; wherein h is h1 ＝f(T h1 ，P h1 ) The temperature T of the liquid hydrogen at the liquid hydrogen inlet of the liquid hydrogen gasification heat exchange tube h1 And pressure P h1 And (5) determining.
The intake air cold energy recovery efficiency is defined as the ratio of intake air cooler air cold energy to the latent heat of vaporization absorbed by liquid hydrogen vaporization.
Preferably, the calculation formula of the liquid hydrogen gasification cold recovery coefficient of the liquid hydrogen gasification unit is:
wherein:
η B -the liquid hydrogen gasification cold recovery coefficient,%;
c w -specific heat capacity of coolant water, kJ/(kg·k);
m w3 the outlet water quantity kg/s of the cooling medium water heat exchange pipe in unit time;
T w3 -outlet water temperature of the refrigerant water heat exchange tube, K;
T w2 -inlet water temperature of the refrigerant water heat exchange tube, K.
The liquid hydrogen gasification cold recovery coefficient of the liquid hydrogen gasification unit is defined as the ratio of cold obtained by chilled water to cold released by liquid hydrogen gasification.
Preferably, the calculation formula of the heat exchange efficiency of the air inlet cooler is as follows:
wherein:
η C -intake cooler heat exchange efficiency,%;
m w6 -the amount of chilled water at the outlet of the inlet air cooler per unit time, kg/s;
T w6 -inlet cooler chilled water outlet water temperature, K;
T w2 -inlet coolant water temperature, K, of the inlet air cooler.
The heat exchange efficiency of the air inlet cooler is defined as the ratio of the air cold absorption capacity to the cold release capacity of the coolant water.
Under the condition of neglecting the flow path water quantity loss of the cooling water, cold storage water, cooling water and other flow paths, a water flow balance relation is established according to different combined operation modes, the energy balance of a device system is established based on the water flow balance relation, and according to the monitoring and adjusting requirements of a monitoring control unit on the system, the temperature, pressure and flow monitoring instruments are simplified to be configured and the taking and setting of the parameter definition positions are carried out under the condition that the temperature, pressure and flow monitoring requirements of a parameter definition position medium are met.
Compared with the prior art, the invention has the following beneficial effects:
(1) The device system provided by the invention adopts the hydrogen-burning gas turbine air inlet cooling technology, the intermediate medium gasification technology and the water cold accumulation technology comprehensively, properly reduces the air inlet temperature of the hydrogen-burning gas turbine unit, solves the problem of cold waste in the process of utilizing the liquid hydrogen fuel of the hydrogen-burning gas turbine, improves the power and efficiency of the hydrogen-burning gas turbine in a high-temperature operation environment, realizes the recycling of the gasified cold of the liquid hydrogen fuel, improves the comprehensive utilization level of the energy of the hydrogen-burning gas turbine combined cycle power plant, and meets the advanced technical requirements of a novel power system taking new energy as a main body;
(2) Aiming at the application scene of the combined cycle power plant of the hydrogen-burning gas turbine, the invention provides different liquid hydrogen gasification cold recovery modes applicable to the generator sets of the hydrogen-burning gas turbine with different hydrogen loading ratios, allows the constituent units of the device system to apply different combined operation modes, and also provides a specific method applicable to the energy balance analysis and the cold recovery effect evaluation of the device system, thereby filling the blank of the related technology.
Drawings
Fig. 1 is a schematic structural diagram of a device system for recycling cold energy of liquid hydrogen gasification provided in embodiment 1 of the present invention;
Fig. 2 is a schematic structural diagram of a liquid hydrogen storage and supply unit according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of a hydrogen post-treatment unit according to embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a liquid hydrogen gasification unit according to embodiment 1 of the present invention;
fig. 5 is a schematic structural view of an intake air cooling unit according to embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of a chilled water storage unit according to embodiment 1 of the present invention;
fig. 7 is a schematic structural diagram of a circulating cooling water unit according to embodiment 1 of the present invention;
FIG. 8 is a schematic diagram of the location of the parameters of the system for providing cold recycling of liquid hydrogen gasification according to application example 1 of the present invention;
wherein:
1, a liquid hydrogen storage and supply unit; 101, a liquid hydrogen discharging isolation valve; 102, a liquid hydrogen storage device; 103, a liquid hydrogen storage device thermometer; 104, a liquid hydrogen storage device pressure gauge; 105, a liquid hydrogen storage device safety burst disk; 106, supplying liquid hydrogen to the check valve; 107, a liquid hydrogen supply pump; 108, a liquid hydrogen supply pump outlet overflow valve; 109, liquid hydrogen supply pump outlet thermometer; 110, a liquid hydrogen supply pump outlet pressure gauge; 111, liquid hydrogen supply quick closing isolation valve; 112, a liquid hydrogen supply flow regulating valve; 113, a liquid hydrogen reflux isolation valve; 114, a liquid hydrogen reflux flow regulating valve; 115, a liquid hydrogen return check valve;
2, a hydrogen post-treatment unit; 201, a hydrogen gas-liquid separation device; 202, a hydrogen gas-liquid separation device liquid level gauge; 203, a first safety relief device; 204, hydrogen gas supply thermometer; 205, a hydrogen gas supply pressure gauge; 206, hydrogen supply quick closing valve; 207, a hydrogen gas supply flow control valve; 208, hydrogen supply flow meter; 209, a hydrogen supply pressure reducing valve; 210, hydrogen gas supply thermometer; 211, a hydrogen gas supply pressure gauge; 212, a hydrogen supply outlet filter; 213, a second safety relief device; 214, a hydrogen supply outlet isolation valve;
3, a liquid hydrogen gasification unit; 301, a liquid hydrogen gasification device; 302, a liquid hydrogen gasification heat exchange tube; 303, an intermediate media sump; 304, an intermediate medium gas distribution pipe; 305, an intermediate medium liquid distribution pipe; 306, an intermediate medium showerhead; 307, refrigerant water heat exchange tube; 308, a chilled water inlet thermometer; 309, chilled water outlet thermometer; 310, a liquid hydrogen gasification device component analyzer; 311, a liquid hydrogen gasification device thermometer; 312, a liquid hydrogen gasification device pressure gauge; 313, a liquid hydrogen gasification device safety burst disk;
4, an air inlet cooling unit; 401, a chilled water circulation pump; 402, a coolant water circulation pump outlet thermometer; 403, a coolant water circulating pump outlet pressure gauge; 404, an outlet overflow valve of the chilled water circulating pump; 405, a chilled water supply check valve; 406, a chilled water feed isolation valve; 407, a chilled water feed flow meter; 408, intake cooler intake thermometer; 409, an intake cooler; 410, an intake cooler backwater thermometer; 411, an intake cooler return water flow regulating valve; 412, an intake cooler return water isolation valve; 413, intake cooler backwater flow meter; 414, cold-storage water supply isolating valve; 415, cold-storage water storage isolation valve; 416, a chilled water flow dividing isolation valve; 417, a chilled water drain isolation valve; 418, a coolant overflow flow meter; 419, an intake pre-cooler thermometer; 420, an intake cooler post-thermometer; 421, an intake cooler rear hygrometer; 422, an intake air filter;
5, a water cold accumulation unit; 501, a chilled water storage device; 502, a cold accumulation water diversion flow regulating valve; 503 cold storage water flow dividing flowmeter; 504, cold-storage water feed pump; 505, cold-storage water feed pump outlet overflow valve; 506, a cold-storage water feed pump outlet thermometer; 507, a cold accumulation water feed pump outlet pressure gauge; 508, cold-storage water supply check valve; 509, a cold accumulation water supply water flow regulating valve; 510, a first overflow isolation valve for coolant water;
6, circulating cooling water unit; 601, a closed cooling water device; 602, a chilled water replenishing thermometer; 603, refrigerant water supplementing flow regulating valve; 604, a coolant water replenishing flowmeter; 605, a refrigerant water flow meter; 606, a refrigerant water flow regulating valve; 607, cooling water flow regulating valve; 608, cooling the water flow meter; 609, a chilled water second overflow isolation valve; 610, a cooling water circulation pump; 611, a turbine condenser; 612, a condenser manometer;
7, monitoring a control unit; 1A, a 1 st interface of a liquid hydrogen storage and supply unit; 1B, a 2 nd interface of the liquid hydrogen storage and supply unit; 2A, a 1 st interface of the hydrogen post-treatment unit; 2B, a 2 nd interface of the hydrogen post-treatment unit; 3A, the 1 st interface of the liquid hydrogen gasification unit; 3B, a 2 nd interface of the liquid hydrogen gasification unit; 3C, a 3 rd interface of the liquid hydrogen gasification unit; 3D, 4 th interface of liquid hydrogen gasification unit; 4A, an inlet air cooling unit 1 st interface; 4B, an inlet air cooling unit 2 nd interface; 4C, an inlet air cooling unit 3 rd interface; 4D, an inlet air cooling unit 4 th interface; 4E, an inlet air cooling unit 5 th interface; 4F, an inlet air cooling unit 6 th interface; 4G, an inlet air cooling unit 7 th interface; 4H, an 8 th interface of the air inlet cooling unit; 5A, a 1 st interface of the chilled water storage unit; 5B, a 2 nd interface of the chilled water storage unit; 5C, a 3 rd interface of the chilled water storage unit; 6A, a 1 st interface of the circulating cooling water unit; 6B, a 2 nd interface of the circulating cooling water unit; 6C, a 3 rd interface of the circulating cooling water unit;
h1, a liquid hydrogen inlet of the liquid hydrogen gasification heat exchange tube; h2, a hydrogen outlet of the hydrogen-liquid separation device; h3, a liquid hydrogen outlet of the hydrogen gas-liquid separation device; a1, an air inlet of an air inlet cooler; a2, an air outlet of the air inlet cooler; w1, outlet of coolant water supplementing flow meter; w2, an inlet of a refrigerant water heat exchange tube; w3, outlet of coolant water heat exchange tube; w4, outlet of coolant water circulating pump; w5, a refrigerant water inlet of the air inlet cooler; w6, a refrigerant water outlet of the air inlet cooler; w7, cold accumulation water feed pump outlet; w8, coolant water diversion flowmeter outlet; w9, coolant water diversion flowmeter outlet; w10, cooling water diversion flow meter outlet; w11, coolant water overflows the outlet of the flowmeter.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
Example 1
The embodiment provides a device system for recycling cold energy of liquid hydrogen gasification, as shown in fig. 1, the device system comprises a liquid hydrogen storage and supply unit 1, a hydrogen post-treatment unit 2, a liquid hydrogen gasification unit 3, an air inlet cooling unit 4, a water cold storage unit 5, a circulating cooling water unit 6 and a monitoring control unit 7;
The liquid hydrogen storage and supply unit 1 is provided with a liquid hydrogen storage and supply unit 1 st interface 1A and a liquid hydrogen storage and supply unit 2 nd interface 1B, and the liquid hydrogen storage and supply unit 1 st interface 1A is connected to a liquid hydrogen gasification unit 1 st interface 3A of the liquid hydrogen gasification unit 3 and is used for supplying liquid hydrogen to the liquid hydrogen gasification unit 3; the 2 nd interface 1B of the liquid hydrogen storage and supply unit is connected to the 2 nd interface 2B of the hydrogen post-treatment unit 2 and is used for recovering the separated liquid hydrogen of the hydrogen post-treatment unit 2;
the hydrogen post-treatment unit 2 is provided with a 1 st interface 2A of the hydrogen post-treatment unit and a 2 nd interface 3B of the liquid hydrogen gasification unit connected to the liquid hydrogen gasification unit 3;
the liquid hydrogen gasification unit 3 is provided with a 3 rd interface 3C and a 4 th interface 3D of the liquid hydrogen gasification unit, and the 3 rd interface 3C of the liquid hydrogen gasification unit is connected to a 1 st interface 4A of an air inlet cooling unit 4 and is used for receiving air inlet cooling backwater of the air inlet cooling unit 4; the 4 th interface 3D of the liquid hydrogen gasification unit is connected to the 2 nd interface 4B of the air intake cooling unit 4 and is used for supplying low-temperature refrigerant water to the air intake cooling unit 4;
the air inlet cooling unit 4 is provided with an air inlet cooling unit 3 rd interface 4C, an air inlet cooling unit 4 th interface 4D, an air inlet cooling unit 5 th interface 4E, an air inlet cooling unit 6 th interface 4F, an air inlet cooling unit 7 th interface 4G and an air inlet cooling unit 8 th interface 4H, and the air inlet cooling unit 3 rd interface 4C is connected to a circulating cooling water unit 3 rd interface 6C of the circulating cooling water unit 6 and is used for receiving initial coolant water filling from the circulating cooling water unit 6 and coolant water supplementing in the running process; the 4 th interface 4D of the air inlet cooling unit is connected to the 2 nd interface 6B of the circulating cooling water unit and is used for shunting the surplus coolant water to the circulating cooling water unit 6; the 5 th interface 4E of the air inlet cooling unit is connected to the 1 st interface 6A of the circulating cooling water unit and is used for recycling the refrigerant water overflowed by the w4 circulating pump to the circulating cooling water unit 6; the 6 th interface 4F of the air inlet cooling unit is connected to the 3 rd interface 5C of the chilled water storage unit 5, and is used for recycling chilled water overflowed from the outlet w4 of the chilled water circulation pump to the chilled water storage unit 5; the 7 th interface 4G of the air inlet cooling unit is connected to the 2 nd interface 5B of the chilled water storage unit and is used for conveying short-time excess coolant water for air inlet cooling to the chilled water storage unit 5; the 8 th interface 4H of the air inlet cooling unit is connected to the 1 st interface 5A of the water cold storage unit and is used for supplying low-temperature cold storage water from the water cold storage unit 5 to the air inlet cooling system;
The monitoring control unit 7 is used for collecting and monitoring temperature, pressure, flow and valve position signals of the device system, remotely transmitting the signals to a power plant DCS control system and receiving the monitoring of the DCS monitoring system;
the liquid hydrogen storage supply unit 1 provided in this embodiment will be described in detail below with reference to the drawings. As shown in fig. 2, the liquid hydrogen storage and supply unit 1 includes a liquid hydrogen storage device 102 and a liquid hydrogen return flow path, and the liquid hydrogen storage device 102 is connected to the liquid hydrogen supply flow path;
the liquid hydrogen supply flow path includes a liquid hydrogen supply check valve 106, a liquid hydrogen supply pump 107, a liquid hydrogen supply quick-closing isolation valve 111, and a liquid hydrogen supply flow rate regulating valve 112, which are connected in this order; the liquid hydrogen supply check valve 106 is used for preventing liquid hydrogen pumped by the liquid hydrogen supply pump 107 from converging to the liquid hydrogen storage device 102; the liquid hydrogen supply pump 107 is used for pumping out liquid hydrogen from the liquid hydrogen storage device 102 and pumping the liquid hydrogen to the liquid hydrogen gasification unit 3 in a pressurized manner; the liquid hydrogen supply quick closing isolation valve 111 is used for quickly switching on and off the liquid hydrogen supply to the liquid hydrogen gasification unit 3, and the quick closing time of the quick closing isolation valve is 0.8s; the liquid hydrogen supply flow rate regulating valve 112 is used for regulating the flow rate of the liquid hydrogen entering the liquid hydrogen gasification unit 3;
The hydrogen supply flow path is provided with a liquid hydrogen supply pump outlet overflow valve 108, a liquid hydrogen supply pump outlet thermometer 109, and a liquid hydrogen supply pump outlet pressure gauge 110 in the liquid hydrogen supply pump 107; the liquid hydrogen supply pump outlet overflow valve 108 is used for limiting the highest pressure of the liquid hydrogen supplied by the liquid hydrogen storage supply unit 1 to the liquid hydrogen gasification unit 3, and when the liquid hydrogen pressure at the outlet of the liquid hydrogen supply pump 107 exceeds the set value of the liquid hydrogen supply pump outlet overflow valve 108, part of the liquid hydrogen overflows back to the liquid hydrogen storage device 102; the liquid hydrogen supply pump outlet thermometer 109 is used for monitoring the temperature of the liquid hydrogen supplied from the liquid hydrogen storage supply unit 1 to the liquid hydrogen gasification unit 3; the liquid hydrogen supply pump outlet pressure gauge 110 is used for monitoring the liquid hydrogen pressure delivered from the liquid hydrogen storage supply unit 1 to the liquid hydrogen gasification unit 3;
the liquid hydrogen reflux flow path comprises a liquid hydrogen reflux isolation valve 113, a liquid hydrogen reflux flow regulating valve 114 and a liquid hydrogen reflux check valve 115 which are connected in sequence; the liquid hydrogen reflux isolation valve 113 is used for isolating a liquid hydrogen flow path of reflux of the gas-liquid separator in the hydrogen post-treatment unit 2. The liquid hydrogen reflux flow regulating valve 114 is used for regulating the liquid hydrogen flow of the hydrogen gas-liquid separating device 201 in the hydrogen post-treatment unit 2; the liquid hydrogen return check valve 115 is used for preventing liquid hydrogen after the liquid hydrogen is supplied to the check valve 106 from entering the liquid hydrogen return flow path;
The inlet of the liquid hydrogen storage device 102 is provided with a liquid hydrogen unloading isolation valve 101 for isolating a hydrogen unloading flow path between a liquid hydrogen source outside a gas turbine plant and the liquid hydrogen storage device 102; the liquid hydrogen storage device 102 is provided with a liquid hydrogen storage device thermometer 103 for monitoring the internal temperature of the liquid hydrogen storage device 102; the liquid hydrogen storage device 102 is provided with a liquid hydrogen storage device pressure gauge 104 for monitoring the internal pressure of the liquid hydrogen storage device 102; the top of the liquid hydrogen storage device 102 is provided with a liquid hydrogen storage device safety rupture disc 105 for overpressure protection in the liquid hydrogen storage device 102;
the hydrogen post-treatment unit 2 provided in this embodiment will be described in detail below with reference to the drawings. As shown in fig. 3, the hydrogen post-treatment unit 2 includes a hydrogen gas-liquid separation device 201, and the hydrogen gas-liquid separation device 201 is connected to the liquid hydrogen gasification unit 3; the bottom of the hydrogen-liquid separation device 201 is connected to the liquid hydrogen reflux flow path, and the top is connected to a hydrogen supply flow path;
the hydrogen gas-liquid separation device 201 is provided with a hydrogen gas-liquid separation device liquid level meter 202 for monitoring the liquid hydrogen level separated by the hydrogen gas-liquid separation device 201 in real time and setting a liquid level overrun alarm module; a hydrogen supply thermometer 204 and a hydrogen supply pressure gauge 205 are arranged at the outlet of the hydrogen-liquid separation device 201, and are respectively used for monitoring the temperature and pressure of the gasified hydrogen of the hydrogen-liquid separation device 201;
The hydrogen supply flow path includes a first safety relief device 203, a hydrogen supply quick-closing valve 206, a hydrogen supply flow control valve 207, a hydrogen supply flow meter 208, a hydrogen supply pressure reducing valve 209, a hydrogen supply outlet filter 212, a second safety relief device 213, and a hydrogen supply outlet isolation valve 214, which are connected in sequence; the first safety relief device 203 is used for overpressure safety protection of equipment and pipelines between the hydrogen supply quick-closing valve 206 and the liquid hydrogen supply flow regulating valve 112; the hydrogen supply quick-closing valve 206 is used for quickly switching on and off the hydrogen supply when the device system needs to close the hydrogen supply suddenly, and the quick-closing time of the hydrogen supply quick-closing valve is 0.8s; the hydrogen supply flow control valve 207 adjusts the hydrogen amount entering the fuel system of the gas turbine in real time according to the flow feedback of the hydrogen supply flow meter 208 and the instruction of the control system of the gas turbine; the hydrogen supply flow meter 208 is used for measuring the feedback hydrogen supply flow in real time; the hydrogen supply pressure reducing valve 209 is used for regulating the hydrogen supply pressure to the hydrogen supply pressure required by the fuel system of the gas turbine; the hydrogen supply outlet filter 212 is used for ensuring the cleanliness of the downstream hydrogen; the second safety relief device 213 is used for overpressure safety protection of equipment and pipelines between the hydrogen supply quick-closing valve 206 and the hydrogen supply outlet isolation valve 214; the hydrogen supply outlet isolation valve 214 is used for opening and closing a flow path between the hydrogen post-treatment unit 2 and a fuel system of the gas turbine, and is fully opened during normal operation, and closed during system shutdown, maintenance or emergency; a hydrogen supply thermometer 210 and a hydrogen supply pressure gauge 211 are disposed behind the hydrogen supply pressure reducing valve 209, and are respectively used for monitoring the hydrogen temperature and the hydrogen pressure behind the hydrogen supply pressure reducing valve 209 in real time;
The liquid hydrogen gasification unit 3 provided in this embodiment will be described in detail below with reference to the drawings. As shown in fig. 4, the liquid hydrogen gasification unit 3 includes a liquid hydrogen gasification device 301, a condensation area is disposed at the top of an inner cavity of the liquid hydrogen gasification device 301, and an evaporation area is disposed at the bottom of the inner cavity;
the condensation zone is provided with a liquid hydrogen gasification heat exchange tube 302 which is arranged by a plurality of layers of coils with lower inlet and higher outlet, the inlet of the liquid hydrogen gasification heat exchange tube 302 is connected with the liquid hydrogen supply flow path, and the outlet is connected with the hydrogen gas liquid separation device 201;
an intermediate medium liquid collecting tank 303 is arranged between the condensation area and the evaporation area, an intermediate medium gas distribution pipe 304 is arranged at the top of the intermediate medium liquid collecting tank 303, an intermediate medium liquid distribution pipe 305 is arranged at the bottom of the intermediate medium liquid collecting tank, and the intermediate medium liquid collecting tank is used for receiving intermediate medium propane liquid from the intermediate medium liquid collecting tank 303 and uniformly distributing liquid in a horizontal plane by adopting a multi-branch non-equidistant annular structure; the top end of the middle medium gas distribution pipe 304 is provided with a liquid blocking cover; the middle medium gas distribution pipe 304 is uniformly provided with round holes with the diameter of 1mm along the circumferential direction for distributing and rectifying propane vapor so as to ensure that the propane vapor from the evaporation area uniformly enters the condensation area and improve the heat exchange efficiency of the condensation area; the lowest row of openings of the middle medium gas distribution pipe 304 is positioned 10cm above the liquid level of the middle medium liquid collection tank 303, so that propane liquid is prevented from directly entering an evaporation zone along the openings of the middle medium gas distribution pipe 304, and the heat exchange effect of the evaporation zone is prevented from being influenced; the bottom of the middle medium liquid distribution pipe 305 is provided with a middle medium spray header 306;
The evaporation zone is provided with a plurality of layers of refrigerant water heat exchange pipes 307 which are arranged in a coil pipe manner, and an inlet and an outlet of each refrigerant water heat exchange pipe 307 are respectively and independently connected with the air inlet cooling unit 4; a chilled water inlet thermometer 308 is arranged at the inlet of the chilled water heat exchange pipe 307 and is used for monitoring the chilled water inlet temperature in real time; a chilled water outlet thermometer 309 is arranged at the outlet of the chilled water heat exchange tube 307, and is used for monitoring the outlet temperature of chilled water in real time;
the top of the liquid hydrogen gasification device 301 is provided with a liquid hydrogen gasification device component analyzer 310, a liquid hydrogen gasification device thermometer 311, a liquid hydrogen gasification device pressure gauge 312 and a liquid hydrogen gasification device safety rupture disk 313, wherein the liquid hydrogen gasification device thermometer 311 and the liquid hydrogen gasification device pressure gauge 312 are respectively used for monitoring the temperature and the pressure of an intermediate medium in the liquid hydrogen gasification device 301; the safety rupture disk 313 of the liquid hydrogen gasification device is damaged when the internal pressure of the liquid hydrogen gasification device 301 exceeds the safety limit, and an intermediate medium is discharged to a designated safety area of a factory through a discharge pipeline for harmless treatment;
the intake air cooling unit 4 provided in this embodiment will be described in detail below with reference to the drawings. As shown in fig. 5, the intake cooling unit 4 includes an intake cooling coolant water supply flow path, an intake cooler, and an intake cooling coolant water return flow path that are sequentially connected;
The air inlet cooling chilled water supply flow path comprises a chilled water circulating pump 401, a chilled water supply check valve 405, a chilled water supply isolation valve 406 and a chilled water supply flowmeter 407 which are connected in sequence, and the chilled water supply isolation valve 406 is also connected with a cold storage water storage isolation valve 415; the coolant circulation pump 401 is used for pressurizing low-temperature coolant water from the coolant heat exchange tube 307, overcoming the along-way resistance and the elevation difference resistance of the inlet cooling coolant water supply flow path, and providing sufficient power for coolant water supply loop circulation; the cold-water supply check valve 405 is used for reversing the inlet of the cold-water circulation pump 401, the water cold storage unit 5 or the circulating cooling water unit 6 when the cold-water circulation pump 401 is in low load or is out of operation; the coolant water supply isolation valve 406 is used for switching on and off coolant water supply flow paths for water supply; the coolant water supply flowmeter 407 is configured to monitor and meter the flow of low-temperature coolant water into the intake cooler 409; the coolant water supply flowmeter 407 is also connected with a cold-storage water supply isolation valve 414;
the refrigerant water circulating pump 401 is further connected with a refrigerant water circulating pump outlet overflow valve 404, the pressure of the refrigerant water circulating pump 401 exceeds the set value of the refrigerant water circulating pump outlet overflow valve 404, and part of refrigerant water overflows to the chilled water storage unit 5 or the circulating cooling water unit 6; the coolant water circulation pump outlet overflow valve 404 is provided with a coolant water overflow flowmeter 418 for measuring low-temperature coolant water flow overflowed by the coolant water circulation pump outlet overflow valve 404; the coolant water circulating pump 401 is also connected with a coolant water diversion isolation valve 416; the coolant water circulating pump 401 is connected with the outlet of the coolant water heat exchange pipe 307;
The inlet cooling coolant water supply flow path is provided with a coolant water circulating pump outlet thermometer 402 for monitoring coolant water temperature at the outlet of the coolant water circulating pump 401; a circulating pump outlet pressure gauge 403 is arranged for monitoring the coolant water pressure at the outlet of the coolant water circulating pump 401; an intake cooler intake thermometer 408 is provided for monitoring the coolant intake water temperature of the intake cooler 409;
the refrigerant water circulates in the air inlet cooler 409, fins are arranged outside to increase the heat exchange efficiency of the air side, a seamless heat exchange tube without joints is adopted in the air channel of the air inlet system, and the seamless heat exchange tube is arranged outside the air channel of the air inlet system, so that the refrigerant water is prevented from entering the gas compressor due to the fact that the joints are not tightly sealed; the air inlet cooler 409 is arranged at the downstream of the air inlet filter 422 in the air flow direction, so as to prevent the filter element of the air inlet filter 422 from being wet blocked due to the increase of the relative humidity after the air is cooled;
the air inlet cooler 409 is provided with an air inlet cooler front thermometer 419 and an air inlet cooler rear thermometer 420, which are respectively used for monitoring the front air temperature and the rear air temperature of the air inlet cooler 409; the air inlet cooler 409 is further provided with an air inlet cooler rear hygrometer 421 for monitoring the air humidity behind the air inlet cooler 409;
The intake cooling refrigerant water return flow path comprises an intake cooler return flow regulating valve 411, an intake cooler return isolation valve 412 and an intake cooler return flow meter 413 which are connected in sequence; the intake cooler backwater flow regulating valve 411 is used for controlling the coolant water quantity of the intake cooler 409; the air inlet cooler backwater isolation valve 412 is used for switching on and off backwater of coolant of the air inlet cooler 409 and isolating coolant of the air inlet cooler during shutdown, overhaul and maintenance of the air inlet cooler 409; the intake cooler backwater flowmeter 413 is used for monitoring and metering the amount of the refrigerant water passing through the intake cooler 409;
the intake cooling coolant water return flow path is provided with an intake cooler water return thermometer 410 for monitoring coolant water return temperature of the intake cooler 409; the air inlet cooling coolant water return flow path is also provided with a coolant water drain isolation valve 417 for drain of the coolant water loop during the shutdown and maintenance of the air inlet cooler 409;
the chilled water storage unit 5 provided in this embodiment will be described in detail below with reference to the drawings. As shown in fig. 6, the water cold storage unit 5 includes a cold storage water flow path, a water cold storage device 501, and a cold storage water supply flow path, which are sequentially connected;
The cold-storage water diversion flow path comprises a cold-storage water diversion flow regulating valve 502 and a cold-storage water diversion flow meter 503 which are sequentially connected, and the cold-storage water diversion flow regulating valve 502 is connected with the cold-storage water storage isolation valve 415; the cold-storage water diversion flow regulating valve 502 is used for regulating the diversion refrigerant water flow entering the water cold storage device 501; the cold-storage water flow dividing flowmeter 503 is used for monitoring and measuring the flow of divided refrigerant water entering the water cold storage device 501;
the cold-storage water supply flow path comprises a cold-storage water supply pump 504, a cold-storage water supply check valve 508 and a cold-storage water supply flow regulating valve 509 which are sequentially connected, and the cold-storage water supply flow regulating valve 509 is connected with the cold-storage water supply isolation valve 414; the cold water supply pump 504 is used for pumping low-temperature cold water in the water absorption cold storage unit 5 and supplying the low-temperature cold water to the air inlet cooler 409; the cold-storage water supply check valve 508 is used for preventing the refrigerant water supplied to the inlet air cooler 409 from flowing back; the cold-storage water supply water flow regulating valve 509 is used for regulating the low-temperature cold-storage water flow entering the air inlet cooler 409;
the cold water supply pump 504 is further connected with a cold water supply pump outlet overflow valve 505, and when the water supply pressure of the cold water exceeds the set value of the cold water supply pump outlet overflow valve 505, part of the refrigerant water overflows to the water return cold storage device 501; the cold water feed pump 504 is further provided with a cold water feed pump outlet thermometer 506 and a cold water feed pump outlet pressure gauge 507, which are respectively used for monitoring the cold water temperature and the water pressure of the cold water at the outlet of the cold water feed pump 504;
The chilled water storage device is also connected with a first overflow isolation valve 510 of the chilled water, and the first overflow isolation valve 510 of the chilled water is connected with the overflow valve 404 of the outlet of the chilled water circulating pump and is used for switching on and off overflow chilled water from the overflow valve 404 of the outlet of the chilled water circulating pump;
the circulating cooling water unit 6 provided in this embodiment will be described in detail below with reference to the drawings. As shown in fig. 7, the circulating cooling water unit 6 includes a closed cooling water device 601, the closed cooling water device 601 is respectively and independently connected to a coolant water supply and replenishment flow path, a coolant water diversion flow path, a coolant water overflow return flow path, and a cooling water circulation pump 610, and the cooling water circulation pump 610 is connected to a turbine condenser 611; the gas turbine condenser 611 is provided with a condenser pressure gauge 612 for monitoring the gas turbine exhaust back pressure in the gas turbine condenser 611 in real time;
the coolant water supply and supplement flow path is used for filling initial coolant water into a coolant water loop of the air intake cooling unit 4 and supplementing coolant water in the running process, and comprises a coolant water supplement flow regulating valve 602 and a coolant water supplement flow meter 603 which are sequentially connected, wherein the coolant water supplement flow meter 603 is connected with the coolant water drain isolation valve 417; the coolant water supply and replenishment flow rate adjusting valve 602 is used for adjusting the initial coolant water filling and the coolant water replenishment amount in operation entering the coolant water heat exchange pipe 307; the coolant water make-up flow meter 603 is used for monitoring and metering the initial coolant water filling and coolant water make-up amount in operation of the coolant water heat exchange tube 307; a coolant water replenishing thermometer 604 is arranged at the downstream of the coolant water replenishing flowmeter 603 and is used for monitoring coolant water replenishing temperature;
The refrigerant water diversion flow path comprises a refrigerant water diversion flow meter 605 and a refrigerant water diversion flow regulating valve 606 which are connected in sequence, and the refrigerant water diversion flow meter 605 is connected with the refrigerant water diversion isolation valve 416; a diversion branch is led out from the upstream of the coolant diversion flow regulating valve 606, the diversion branch comprises a coolant diversion flow regulating valve 607 and a coolant diversion flow meter 608 which are connected in sequence, and the coolant diversion flow meter 608 is connected with the coolant circulation pump 610; the coolant split flow meter 605 is used for monitoring and measuring the total split water amount of the coolant split flow path; the coolant water diversion flow regulating valve 606 is used for regulating the low-temperature coolant water diversion flow which directly flows back to the closed cooling water device 601; the cooling water diversion flow regulating valve 607 is used for regulating the flow of low-temperature refrigerant water directly injected into the circulating water system of the gas turbine condenser 611; the cooling water diversion flowmeter 608 is used for monitoring and measuring the flow rate of low-temperature coolant water directly injected into the circulating water system of the gas turbine condenser 611;
the coolant overflow backwater flow path is provided with a coolant second overflow isolation valve 609 for switching on and off the overflow coolant flowing back to the closed cooling water device 601 from the outlet of the coolant circulation pump outlet overflow valve 404.
Application example 1
The application example provides a method for recycling liquid hydrogen gasification cold energy by using the device system provided in the application example 1, wherein the method comprises the following steps:
based on the hydrogen loading proportion of the gas turbine generator set, the liquid hydrogen storage and supply unit, the hydrogen post-treatment unit, the liquid hydrogen gasification unit, the air inlet cooling unit, the water cold storage unit and the circulating cooling water unit in the device system are combined for operation;
setting an air inlet cooling outage triggering condition and an air inlet cooling outage releasing condition in the running process; the air inlet cooling outage triggering condition is met, the air inlet cooling unit and the water cold accumulation unit are stopped, and the liquid hydrogen gasification cold energy recovered by the liquid hydrogen gasification unit is completely absorbed by the circulating cooling water unit; the inlet air cooling outage triggering conditions are as follows: t (T) a1 T is less than or equal to 2 DEG C a2 -T c Less than 2 ℃; the air inlet cooling outage relieving condition is met, the air inlet cooling unit and the chilled water storage unit are restarted, and the constituent units of the device system are in a state to be operated; the condition for releasing the cooling and stopping of the air inlet is as follows: t (T) a1 > 2 ℃ or T a2 -T c > 2 ℃; wherein T is a1 For charge air cooler inlet air temperature, T a2 For charge air cooler outlet air temperature, T c The total temperature of the inlet section of the air inlet chamber of the air compressor;
the method is used for recycling the liquid hydrogen gasification cold energy, and then the device system is used for carrying out energy balance analysis and cold energy recycling effect evaluation, and the method for carrying out the energy balance analysis and the cold energy recycling effect evaluation comprises the following steps:
and the efficiency of the liquid hydrogen gasification unit is adopted to evaluate the heat exchange effect of the air inlet cooler and the perfection degree of the equipment technology, and the energy balance of the device system is established based on the water flow balance relation of the device system.
The method for energy balance analysis and cold recovery effect evaluation according to the present application will be described in detail with reference to the drawings. As shown in fig. 8, the parameter defining positions of the device system for recycling the cold energy of the liquid hydrogen gasification include: liquid hydrogen inlet h1 of liquid hydrogen gasification heat exchange tube, hydrogen outlet h2 of hydrogen-liquid separation device, liquid hydrogen outlet h3 of hydrogen-liquid separation device, air inlet a1 of air inlet cooler, air outlet a2 of air inlet cooler, outlet w1 of coolant water make-up flow meter, inlet w2 of coolant water heat exchange tube, outlet w3 of coolant water heat exchange tube, outlet w4 of coolant water circulation pump, inlet w5 of coolant water of air inlet cooler, outlet w6 of coolant water of air inlet cooler, outlet w7 of coolant water feed pump, outlet w8 of coolant water diversion flow meter, outlet w9 of coolant water diversion flow meter, outlet w10 of coolant water diversion flow meter, outlet w11 of coolant water overflow flow meter.
The intake air cold energy recovery efficiency is defined as the ratio of the intake air cooler air cold energy to the gasification latent heat absorbed by the liquid hydrogen gasification, and the calculation formula is as follows:
wherein:
η A -intake air cooling capacity recovery efficiency,%;
c a -air specific heat capacity, kJ/(kg·k);
m a2 -air quantity per unit time at inlet cooler outlet, kg/s;
T a1 -inlet air temperature of the inlet air cooler, K;
T a2 -inlet cooler outlet air temperature, K;
m h2 -hydrogen yield per unit time of liquid hydrogen gasification unit, kg/s;
h h2 -hydrogen mass enthalpy at the hydrogen outlet of the hydrogen-liquid separation device, kJ/kg;
h h1 -liquid hydrogen mass enthalpy at the liquid hydrogen inlet of the liquid hydrogen gasification heat exchange tube, kJ/kg;
wherein h is h2 ＝f(T h2 ，P h2 ) The temperature T of the hydrogen at the hydrogen outlet of the hydrogen-liquid separation device h2 And pressure P h2 Determining; wherein h is h1 ＝f(T h1 ，P h1 ) The temperature T of the liquid hydrogen at the liquid hydrogen inlet of the liquid hydrogen gasification heat exchange tube h1 And pressure P h1 And (5) determining.
The liquid hydrogen gasification cold energy recovery coefficient of the liquid hydrogen gasification unit is defined as the ratio of cold energy obtained by chilled water to cold energy released by liquid hydrogen gasification, and the calculation formula is as follows:
wherein:
η B -the liquid hydrogen gasification cold recovery coefficient,%;
c w -specific heat capacity of coolant water, kJ/(kg·k);
m w3 the outlet water quantity kg/s of the cooling medium water heat exchange pipe in unit time;
T w3 -outlet water temperature of the refrigerant water heat exchange tube, K;
T w2 -inlet water temperature of the refrigerant water heat exchange tube, K.
The heat exchange efficiency of the air inlet cooler is defined as the ratio of air cold absorption capacity to cold release capacity of coolant water, and the calculation formula is as follows:
wherein:
η C -intake cooler heat exchange efficiency,%;
m w6 -the amount of chilled water at the outlet of the inlet air cooler per unit time, kg/s;
T w6 -inlet cooler chilled water outlet water temperature, K;
T w2 -inlet coolant water temperature, K, of the inlet air cooler.
Under the condition of neglecting the flow path water loss of cooling water, cold storage water, cooling water and the like, the following water flow balance relationship exists:
taking a node w2 of an inlet of a refrigerant water heat exchange pipe as an object, wherein the water quantity flowing into the node is equal to the sum of the water quantity at a refrigerant water outlet w6 of an air inlet cooler and the water quantity at an outlet w1 of a refrigerant water supplementing flow meter; the water quantity flowing out of the node is equal to the water quantity at the inlet w2 of the chilled water heat exchange pipe, namely:
m w2 ＝m w6 +m w1 (A-4)
Wherein:
m w1 -outlet water quantity of the refrigerant water supplementing flow meter, kg/s;
m w2 -the amount of water at the inlet of the refrigerant water heat exchange tube, kg/s;
m w6 -inlet cooler chilled water outlet water quantity, kg/s;
when the cooling water replenishing is stopped, the water quantity at the inlet of the cooling water heat exchange pipe is equal to the water quantity at the cooling water outlet of the air inlet cooler.
Taking a node w4 of an outlet of the coolant water circulating pump as an object, wherein the water quantity flowing into the node is equal to the water quantity of an outlet w3 of a coolant water heat exchange pipe; the water quantity flowing out of the node is equal to the sum of the water quantity of a refrigerant water inlet w5 of the air inlet cooler, the water quantity of a cold storage water diversion flowmeter outlet w8, the water quantity of a refrigerant water diversion flowmeter outlet w9 and the water quantity of a refrigerant water overflow flowmeter outlet w11, and the water quantity of a cold storage water feed pump outlet w7 is deducted, namely:
m w3 ＝(m w5 -m w7 )+m w8 +m w9 +m w11 (5)
Wherein:
m w3 -the outlet water quantity of the refrigerant water heat exchange pipe, kg/s;
m w5 -inlet water quantity of chilled water of the air inlet cooler, kg/s;
m w7 -the amount of water at the outlet of the cold-storage water feed pump, kg/s;
m w8 -the amount of water at the outlet of the cold-storage water diversion flowmeter, kg/s;
m w9 -outlet water quantity of the coolant water diversion flowmeter, kg/s;
m w11 -the outlet water quantity of the coolant water overflow flowmeter, kg/s;
when the hydrogen loading proportion of the hydrogen-burning gas turbine is less than 15%, the energy released by the gasification of liquid hydrogen is limited, the cooling capacity recovered by the air inlet cooler is mainly used, the coolant water is stopped to be split into a closed cooling water flow path, and at the moment, the coolant water split flow rate m w9 At zero, the above formula is reduced to: m is m w3 ＝(m w5 -m w7 )+m w8 +m w11 ；
When the cold load of the air inlet cooler is stable for a long time, the water cold storage unit is stopped, the coolant water circulating pump is stable to operate, the outlet pressure is smaller than the set overflow pressure for a long time, and when no coolant water overflows, the flow balance formula of the w4 node of the outlet of the coolant water circulating pump is simplified into: m is m w3 ＝m w5 。
And establishing system energy balance based on the flow balance relation. According to the monitoring and adjusting requirements of the monitoring control unit on the device system, under the condition that the monitoring requirements of the temperature, the pressure and the flow of the medium at the position defined by parameters are met, the temperature, the pressure and the flow monitoring instrument are simplified and configured, and the taking modes of the parameters at each position are as follows:
the position of the liquid hydrogen inlet h1 of the liquid hydrogen gasification heat exchange tube, the flow parameter takes the measurement value of the hydrogen supply flowmeter 208, the temperature parameter takes the measurement value of the liquid hydrogen supply pump outlet thermometer 109, and the pressure parameter takes the measurement value of the liquid hydrogen supply pump outlet pressure gauge 110;
the hydrogen outlet h2 of the hydrogen-liquid separation device is positioned, the flow parameter takes the mass flow measured by the hydrogen supply flowmeter 208, the temperature parameter takes the measured value of the hydrogen supply thermometer 204, and the pressure parameter takes the measured value of the hydrogen supply pressure gauge 205;
an air inlet a1 of the air inlet cooler, the flow parameters are taken as the air inlet flow of the compressor of the gas turbine, and the temperature parameters are taken as the measured values of a thermometer 418 in front of the air inlet cooler;
an air outlet a2 of the air inlet cooler, wherein flow parameters are taken as air inlet flow of a compressor of the gas turbine, temperature parameters are taken as measured values of a thermometer 419 after the air inlet cooler, and humidity parameters are taken as measured values of a hygrometer 420 after the air inlet cooler;
The outlet w1 of the coolant water supplementing flow meter, the flow parameter takes the measured value of the coolant water supplementing flow meter 604, and the temperature takes the water temperature of the water supplied by the closed cooling water device;
the inlet w2 of the chilled water heat exchange tube is used for taking flow parameters according to the formula (4), and the temperature parameters are measured by a chilled water inlet thermometer 308;
the outlet w3 of the coolant heat exchange tube, the flow parameter is the flow of the inlet w2 of the coolant heat exchange tube, and the temperature parameter is the measured value of the coolant outlet thermometer 309;
the outlet w4 of the coolant water circulating pump is used for taking flow parameters according to (5), and the temperature parameters are measured by a coolant water outlet thermometer 309;
the coolant water inlet w5 of the air intake cooler is used for measuring flow parameters by a water return flowmeter 413 of the air intake cooler, and the temperature parameters by a water inlet thermometer 408 of the air intake cooler;
the coolant water outlet w6 of the air inlet cooler is used for measuring flow parameters by the return water flowmeter 413 of the air inlet cooler, and temperature parameters by the return water thermometer 410 of the air inlet cooler;
the outlet w7 of the cold-storage water feed pump is used for subtracting the measured value of the coolant water feed flowmeter 407 from the measured value of the return water flowmeter 413 of the air inlet cooler, and the measured value of the outlet thermometer 506 of the cold-storage water feed pump is used for obtaining the flow parameters;
A refrigerant water flow dividing flowmeter w8, wherein flow parameters are measured by a refrigerant water flow dividing flowmeter 503, and temperature parameters are measured by a refrigerant water circulating pump outlet thermometer 402;
the outlet w9 of the refrigerant water diversion flowmeter, the flow parameter takes the measured value of the refrigerant water diversion flowmeter 605, and the temperature parameter takes the measured value of the refrigerant water circulation pump outlet thermometer 402;
the outlet w10 of the cooling water flow dividing flowmeter is used for measuring flow parameters by the cooling water flow dividing flowmeter 608, and the temperature parameters are used for measuring the temperature of the cooling water circulating pump outlet thermometer 402;
the outlet w11 of the coolant overflow flowmeter is used for measuring flow parameters by the coolant overflow flowmeter 421, and the temperature parameters are used for measuring the outlet thermometer 402 of the coolant circulation pump.
According to the method and the specific application example, the device system provided in the embodiment 1 is subjected to liquid hydrogen gasification cold energy recycling, energy balance analysis and cold energy recycling effect evaluation.
The performance parameters of a certain type of gas turbine generator set without air inlet cooling after the air inlet temperature is reduced by 10 ℃ by using the device system provided by the invention are compared with the performance parameters shown in the table 1.
TABLE 1
As can be seen from Table 1, the air intake mass flow, the pressure ratio and the power generation power of the combined cycle unit under the basic load can be improved by reducing the air intake temperature of the air compressor, wherein the power generation power can be increased by about 4.7-6.0%, and the effect of adopting air intake cooling is more obvious when the air temperature is higher.
Taking a certain 250MW gas turbine combined cycle unit as an example, when 15% of hydrogen is mixed according to the volume fraction, the gas consumption of a single unit natural gas design hour is 60900Nm 3 Per hour, 10750Nm of hydrogen consumption of a single unit hydrogen design 3 And/h, the mass flow of hydrogen consumed by the corresponding single unit is 2.986kg/s. When simplifying the energy balance analysis process, the liquid hydrogen gasification cold energy recovery coefficient of the liquid hydrogen gasification unit 3 is 1, and the heat exchange efficiency eta of the air inlet cooler 409 and the air inlet cooler C The main state point parameters of hydrogen, air and water of the device system are shown in the table according to 98 percent2.
TABLE 2
For a fuel system of a certain 250MW gas turbine combined cycle unit, when liquid hydrogen in a liquid hydrogen gasification unit is gasified from a state 1 (temperature-250 ℃ C., pressure 10 MPa) to a state 2 (temperature 0 ℃ C., pressure 0.101325 MPa), gasification coldness is as follows: 2.986× (3832.979-123.504) =11077 kJ/s; when the coolant water of the liquid hydrogen gasification unit is cooled from the state 2 (temperature 15 ℃) to the state 1 (temperature 7 ℃) and the flow is 329.7kg/s, the cooling capacity of the coolant water is as follows: 329.7X4.2× (15-7) =11077 kJ/s. At this time, when neglecting the recovery loss of the cold energy of the liquid hydrogen gasification unit, the energy balance of the liquid hydrogen gasification unit;
for the charge air cooler, when the charge air flow rate was 613kg/s, the air-water heat exchange amount was 613×1× (38-19.6) ×98% =11077 kJ/s. At the moment, the energy in the device system for recycling the liquid hydrogen gasification cold energy is balanced, the power generation power lifting rate of the combined cycle unit under the basic load can reach more than 6%, the full recycling of the liquid hydrogen gasification cold energy of the hydrogen-burning gas turbine is realized, the operation cost of the hydrogen-burning gas turbine power plant is effectively reduced, and the device has good social benefit and economic benefit.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that fall within the technical scope of the present invention disclosed herein are within the scope of the present invention.
Claims (10)
1. The device system for recycling the cold energy of the liquid hydrogen gasification is characterized by comprising a liquid hydrogen storage and supply unit, a hydrogen post-treatment unit, a liquid hydrogen gasification unit, an air inlet cooling unit, a water cold accumulation unit, a circulating cooling water unit and a monitoring control unit;
the liquid hydrogen storage and supply unit is respectively connected with the hydrogen post-treatment unit and the liquid hydrogen gasification unit, and the hydrogen post-treatment unit is connected with the liquid hydrogen gasification unit; the liquid hydrogen gasification unit is connected with the air inlet cooling unit, and the air inlet cooling unit is respectively and independently connected with the water cold accumulation unit and the circulating cooling water unit;
the monitoring control unit is used for collecting and monitoring temperature, pressure, flow and valve position signals of the device system and remotely transmitting the signals to the control system.
2. The device system of claim 1, wherein the liquid hydrogen storage supply unit comprises a liquid hydrogen storage device and a liquid hydrogen return flow path, the liquid hydrogen storage device being connected to the liquid hydrogen supply flow path;
Preferably, the liquid hydrogen supply flow path includes a liquid hydrogen supply check valve, a liquid hydrogen supply pump, a liquid hydrogen supply quick-closing isolation valve, and a liquid hydrogen supply flow rate regulating valve, which are connected in sequence;
preferably, the liquid hydrogen reflux flow path comprises a liquid hydrogen reflux isolation valve, a liquid hydrogen reflux flow regulating valve and a liquid hydrogen reflux check valve which are connected in sequence, wherein the liquid hydrogen reflux check valve is connected with a liquid hydrogen supply check valve;
preferably, the inlet of the liquid hydrogen storage device is provided with a liquid hydrogen unloading isolation valve, and the top of the liquid hydrogen storage device is provided with a liquid hydrogen storage device safety rupture disc;
preferably, the liquid hydrogen supply pump is further connected with a liquid hydrogen supply pump outlet overflow valve, the outlet liquid hydrogen pressure of the liquid hydrogen supply pump exceeds the set value of the liquid hydrogen supply pump outlet overflow valve, and part of liquid hydrogen overflows back to the liquid hydrogen storage device.
3. The plant system according to claim 2, wherein the hydrogen post-treatment unit comprises a hydrogen-liquid separation device connected to the liquid hydrogen gasification unit; the bottom of the hydrogen gas-liquid separation device is connected with the liquid hydrogen reflux flow path, and the top of the hydrogen gas-liquid separation device is connected with a hydrogen gas supply flow path;
preferably, the hydrogen gas-liquid separation device is provided with a liquid level meter for monitoring the liquid hydrogen level separated by the hydrogen gas-liquid separation device in real time and setting a liquid level overrun alarm module;
Preferably, the hydrogen supply flow path includes a first safety relief device, a hydrogen supply quick-closing valve, a hydrogen supply flow control valve, a hydrogen supply flow meter, a hydrogen supply pressure reducing valve, a hydrogen supply outlet filter, a second safety relief device, and a hydrogen supply outlet isolation valve, which are connected in sequence;
preferably, the liquid hydrogen gasification unit comprises a liquid hydrogen gasification device, wherein a condensation area is arranged at the top of an inner cavity of the liquid hydrogen gasification device, and an evaporation area is arranged at the bottom of the inner cavity;
preferably, the condensation zone is provided with a liquid hydrogen gasification heat exchange tube, an inlet of the liquid hydrogen gasification heat exchange tube is connected with the liquid hydrogen supply flow path, and an outlet of the liquid hydrogen gasification heat exchange tube is connected with the hydrogen gas-liquid separation device;
preferably, an intermediate medium liquid collecting tank is arranged between the condensation area and the evaporation area, an intermediate medium gas distribution pipe is arranged at the top of the intermediate medium liquid collecting tank, and an intermediate medium liquid distribution pipe is arranged at the bottom of the intermediate medium liquid collecting tank;
preferably, the top end of the middle medium gas distribution pipe is provided with a liquid blocking cover;
preferably, round holes with the diameter of 1-3mm are uniformly formed in the middle medium gas distribution pipe along the circumferential direction;
preferably, the bottom of the middle medium liquid distribution pipe is provided with a middle medium spray header;
Preferably, the evaporation area is provided with a chilled water heat exchange tube, and an inlet and an outlet of the chilled water heat exchange tube are respectively and independently connected with the air inlet cooling unit;
preferably, a safety rupture disk of the liquid hydrogen gasification device is arranged at the top of the shell of the liquid hydrogen gasification device.
4. The device system according to claim 3, wherein the intake cooling unit comprises an intake cooling chilled water supply flow path, an intake cooler, and an intake cooling chilled water return flow path connected in sequence;
preferably, the air inlet cooling chilled water supply flow path comprises a chilled water circulating pump, a chilled water supply check valve, a chilled water supply isolation valve and a chilled water supply flowmeter which are connected in sequence, and the chilled water supply isolation valve is also connected with a cold storage water storage isolation valve;
preferably, the coolant water circulating pump is also connected with a coolant water circulating pump outlet overflow valve, the pressure of the coolant water circulating pump exceeds the set value of the coolant water circulating pump outlet overflow valve, and part of coolant water overflows to the water cold storage unit and/or the circulating cooling water unit;
preferably, the coolant water circulating pump is also connected with a coolant water diversion isolation valve;
preferably, the chilled water circulating pump is connected with an outlet of the chilled water heat exchange tube;
Preferably, the chilled water supply flow meter is also connected with a cold accumulation water supply isolation valve;
preferably, an air inlet filter is arranged in the upstream air flow direction of the air inlet cooler;
preferably, the air inlet cooling refrigerant water return flow path comprises an air inlet cooler return flow regulating valve, an air inlet cooler return isolation valve and an air inlet cooler return flow meter which are connected in sequence;
preferably, the air inlet cooling coolant water return flow path is also provided with a coolant water drain isolation valve;
preferably, the cold-storage water supply isolation valve, the cold-storage water storage isolation valve and the refrigerant water circulation pump outlet overflow valve are respectively connected with the water cold-storage unit;
preferably, the outlet overflow valve, the coolant diversion isolation valve and the coolant drainage isolation valve of the coolant circulating pump are respectively connected with the circulating cooling water unit.
5. The device system of claim 4, wherein the chilled water storage unit comprises a chilled water flow path, a chilled water storage device, and a chilled water feed water path connected in sequence;
preferably, the cold storage water diversion flow path comprises a cold storage water diversion flow regulating valve and a cold storage water diversion flow meter which are sequentially connected, and the cold storage water diversion flow regulating valve is connected with the cold storage water storage isolation valve;
Preferably, the cold-storage water supply flow path comprises a cold-storage water supply pump, a cold-storage water supply check valve and a cold-storage water supply flow regulating valve which are sequentially connected, and the cold-storage water supply flow regulating valve is connected with the cold-storage water supply isolation valve;
preferably, the cold water supply pump is also connected with a cold water supply pump outlet overflow valve, the water supply pressure of the cold water exceeds the set value of the cold water supply pump outlet overflow valve, and part of the cold water overflows back to the cold water storage device;
preferably, the chilled water storage device is further connected with a first overflow isolation valve of the chilled water, and the first overflow isolation valve of the chilled water is connected with an outlet overflow valve of the chilled water circulating pump.
6. The system of claim 5, wherein the circulating cooling water unit comprises a closed cooling water device, the closed cooling water device is respectively and independently connected with a coolant water supply and supplementing flow path, a coolant water diversion flow path, a coolant water overflow and return flow path and a cooling water circulating pump, and the cooling water circulating pump is connected with a steam turbine condenser;
preferably, the coolant water supply and supplementing flow path comprises a coolant water supplementing flow regulating valve and a coolant water supplementing flow meter which are connected in sequence, and the coolant water supplementing flow meter is connected with the coolant water hydrophobic isolation valve;
Preferably, the refrigerant water diversion flow path comprises a refrigerant water diversion flow meter and a refrigerant water diversion flow regulating valve which are connected in sequence, and the refrigerant water diversion flow meter is connected with the refrigerant water diversion isolation valve; a diversion branch is led out from the upstream of the refrigerant water diversion flow regulating valve, and comprises a cooling water diversion flow regulating valve and a cooling water diversion flow meter which are sequentially connected, wherein the cooling water diversion flow meter is connected with the cooling water circulating pump;
preferably, the coolant overflow backwater flow path is provided with a coolant second overflow isolation valve for switching on and off overflow coolant flowing back to the closed cooling water device from an outlet of the coolant circulation pump outlet overflow valve.
7. A method for liquid hydrogen gasification cold recovery using the plant system of any one of claims 1-6, the method comprising:
the constituent units of the plant system are operated in different combinations based on the different hydrogen loading ratios of the gas turbine generator sets.
8. The method of claim 7, wherein the operating sets an charge air cooling down trigger condition and a charge air cooling down release condition;
Preferably, the air inlet cooling outage triggering condition is met, the air inlet cooling unit and the water cold accumulation unit are stopped, and the liquid hydrogen gasification cold energy recovered by the liquid hydrogen gasification unit is completely consumed by the circulating cooling water unit;
preferably, the charge air cooling off-stream triggering condition is: t (T) a1 T is less than or equal to 2 DEG C a2 -T c Less than 2 ℃; wherein T is a1 For charge air cooler inlet air temperature, T a2 For charge air cooler outlet air temperature, T c The total temperature of the inlet section of the air inlet chamber of the air compressor;
preferably, the condition for releasing the cooling and shutdown of the air inlet is satisfied, the air inlet cooling unit and the chilled water storage unit are restarted, and the constituent units of the device system are in a state to be operated;
preferably, the charge air cooling outage cancellation condition is: t (T) a1 > 2 ℃ or T a2 -T c ＞2℃。
9. A method for energy balance analysis and cold recovery effect evaluation using the plant system of any one of claims 1 to 6, the method comprising:
and the efficiency of the liquid hydrogen gasification unit is adopted to evaluate the heat exchange effect of the air inlet cooler and the perfection degree of the equipment technology, and the energy balance of the device system is established based on the water flow balance relation of the device system.
10. The method of claim 9, wherein the intake air cooling capacity recovery efficiency is calculated by the formula:
wherein:
η A -intake air cooling capacity recovery efficiency,%;
c a -air specific heat capacity, kJ/(kg·k);
m a2 -air quantity per unit time at inlet cooler outlet, kg/s;
T a1 -inlet air temperature of the inlet air cooler, K;
T a2 -inlet cooler outlet air temperature, K;
m h2 -hydrogen yield per unit time of liquid hydrogen gasification unit, kg/s;
h h2 -hydrogen mass enthalpy at the hydrogen outlet of the hydrogen-liquid separation device, kJ/kg;
h h1 -liquid hydrogen mass enthalpy at the liquid hydrogen inlet of the liquid hydrogen gasification heat exchange tube, kJ/kg;
preferably, the calculation formula of the liquid hydrogen gasification cold recovery coefficient of the liquid hydrogen gasification unit is:
wherein:
η B -the liquid hydrogen gasification cold recovery coefficient,%;
c w -specific heat capacity of coolant water, kJ/(kg·k);
m w3 the outlet water quantity kg/s of the cooling medium water heat exchange pipe in unit time;
T w3 -outlet water temperature of the refrigerant water heat exchange tube, K;
T w2 -inlet water temperature of the refrigerant water heat exchange tube, K;
preferably, the calculation formula of the heat exchange efficiency of the air inlet cooler is as follows:
wherein:
η C -intake cooler heat exchange efficiency,%;
m w6 -the amount of chilled water at the outlet of the inlet air cooler per unit time, kg/s;
T w6 -inlet cooler chilled water outlet water temperature, K;
T w2 -inlet coolant water temperature, K, of the inlet air cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310455662.7A CN116447510A (en) | 2023-04-25 | 2023-04-25 | Device system and method for recycling liquid hydrogen gasification cold energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310455662.7A CN116447510A (en) | 2023-04-25 | 2023-04-25 | Device system and method for recycling liquid hydrogen gasification cold energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116447510A true CN116447510A (en) | 2023-07-18 |
Family
ID=87120126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310455662.7A Pending CN116447510A (en) | 2023-04-25 | 2023-04-25 | Device system and method for recycling liquid hydrogen gasification cold energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116447510A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7471546B1 (en) | 2023-10-04 | 2024-04-19 | 三菱電機株式会社 | Superconducting power generation system |
-
2023
- 2023-04-25 CN CN202310455662.7A patent/CN116447510A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7471546B1 (en) | 2023-10-04 | 2024-04-19 | 三菱電機株式会社 | Superconducting power generation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110455006B (en) | Waste heat recovery and energy cascade utilization coupling system of metallurgical oxygen plant | |
| US20120255300A1 (en) | Solar thermal power plant and method for operating a solar thermal power plant | |
| CN116447510A (en) | Device system and method for recycling liquid hydrogen gasification cold energy | |
| CN104048161A (en) | United gasification device of liquified natural gas (LNG) | |
| CN106958977A (en) | A kind of freezer cooling equipment and its control method | |
| CN102230753B (en) | High-efficiency, sub-control and phase-change heat exchange system and method | |
| CN106288577A (en) | A kind of multiple-energy-source big temperature difference district cooling device | |
| CN116045262A (en) | High-pressure heat storage system for generating industrial steam and application method thereof | |
| CN201666706U (en) | Refrigerating system | |
| CN110030758A (en) | A kind of big temperature difference absorption heat pump of multi-stage, efficient and absorption heat exchange device | |
| CN211120163U (en) | L NG cold energy recovery ice making system | |
| CN210267858U (en) | LNG cold energy and exhaust-heat boiler waste heat refrigerated simultaneous cooling system | |
| CN109163576B (en) | Anti-freezing energy-saving heat pipe cooling system and control method thereof | |
| CN206347796U (en) | A kind of process water direct cooling system cooled down for equipment | |
| CN116123521A (en) | Ultra-high pressure steam boiler system utilizing valley electricity to store heat and regulation and control method | |
| KR101237450B1 (en) | Heat pump system for generating steam using waste heated water | |
| CN203907210U (en) | Novel gasifier for liquified natural gas (LNG) | |
| CN210135445U (en) | Ultra-low temperature liquid cold energy recovery device | |
| CN112129028A (en) | LNG power plant multi-energy complementary cooling system with energy storage device | |
| CN101876399A (en) | Energy-saving liquid gas vaporizer | |
| CN209857418U (en) | Ammonia refrigeration system applied to high-rise tower cooling | |
| CN207095136U (en) | A kind of United system | |
| CN216591668U (en) | Horizontal drainage flash tank | |
| CN219654753U (en) | Steam waste heat utilization system behind steam turbine low pressure jar | |
| CN107024063A (en) | A kind of United system and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |