CN113757072A - Ionic liquid hydrogen compressor and using method thereof - Google Patents
Ionic liquid hydrogen compressor and using method thereof Download PDFInfo
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- CN113757072A CN113757072A CN202111251970.5A CN202111251970A CN113757072A CN 113757072 A CN113757072 A CN 113757072A CN 202111251970 A CN202111251970 A CN 202111251970A CN 113757072 A CN113757072 A CN 113757072A
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- 239000002608 ionic liquid Substances 0.000 title claims abstract description 165
- 239000001257 hydrogen Substances 0.000 title claims abstract description 140
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 140
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 190
- 230000006835 compression Effects 0.000 claims abstract description 179
- 239000007921 spray Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 10
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 abstract description 9
- 239000007789 gas Substances 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/06—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means
- F04B37/08—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for evacuating by thermal means by condensing or freezing, e.g. cryogenic pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/062—Cooling by injecting a liquid in the gas to be compressed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/123—Fluid connections
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
An ionic liquid hydrogen compressor and a using method thereof relate to a hydrogen compressor technology, and comprise an ionic liquid tank, a motor pump set, a low-pressure hydrogen tank and a buffer tank, wherein the motor pump set consists of a motor and an ionic liquid pump, the input end of the ionic liquid pump is connected with the ionic liquid tank through a pipeline A, the output end of the ionic liquid pump is communicated with the compression tank A through a pipeline B, a branch pipe A communicated with the compression tank B is arranged on the pipeline B, a pipeline C communicated with the compression tank B is arranged at the top of the low-pressure hydrogen tank, and a branch pipe B communicated with the compression tank A is arranged on the pipeline C; a pipeline D communicated with the upper end of the compression tank A is arranged at the bottom of the buffer tank, and a branch pipe C communicated with the upper end of the compression tank B is arranged on the pipeline D; pipelines E communicated with the heat exchanger are arranged on the outlets of the lower ends of the compression tank A, the compression tank B and the buffer tank; the invention compresses hydrogen and fully cools the compressed hydrogen, and high-pressure gas with high compression ratio can be obtained by one-time compression, and the compression efficiency is higher.
Description
Technical Field
The invention relates to a hydrogen compressor technology, in particular to an ionic liquid hydrogen compressor and a using method thereof.
Background
As is known, the existing high-pressure hydrogen compressor is commonly used for storage and transportation of fuel for new energy vehicles and storage and transportation of gas stations, and is very important for the development of new energy vehicles. The pressure for storing and transporting hydrogen is also increased from 21 MPa to 35 MPa and 70MPa, and the pressure is also increased to 90 MPa. More severe requirements are put on the production of the compressor generating such high pressure, and the existing hydrogen compressors of the type are mainly of a piston type and a centrifugal type, and the piston type is divided into a conventional sealing type, a diaphragm type and an ionic liquid type according to the sealing mode and the structure. The compressors have the common characteristic that the existing multi-stage compression is realized, the outlet temperature of each stage of compression is smaller than a certain value, and then the compressors are cooled and enter the next stage of compressor for compression. Usually three or more stages, which results in a complex, bulky, high leakage and inefficient plant architecture. Therefore, it is a basic demand of those skilled in the art to provide an ionic liquid hydrogen compressor with higher compression efficiency, low leakage rate and higher safety.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses an ionic liquid hydrogen compressor and a using method thereof.
In order to realize the purpose, the invention adopts the following technical scheme:
an ionic liquid hydrogen compressor comprises an ionic liquid tank, a motor pump set, a low-pressure hydrogen tank and a buffer tank, wherein the motor pump set consists of a motor and an ionic liquid pump, the input end of the ionic liquid pump is connected with the ionic liquid tank through a pipeline A, the output end of the ionic liquid pump is communicated with the compression tank A through a pipeline B, a branch pipe A communicated with the compression tank B is arranged on the pipeline B, a pipeline C communicated with the compression tank B is arranged at the top of the low-pressure hydrogen tank, and a branch pipe B communicated with the compression tank A is arranged on the pipeline C; a pipeline D communicated with the upper end of the compression tank A is arranged at the bottom of the buffer tank, and a branch pipe C communicated with the upper end of the compression tank B is arranged on the pipeline D; and the outlets of the lower ends of the compression tank A, the compression tank B and the buffer tank are respectively provided with a pipeline E communicated with the heat exchanger.
Ionic liquid hydrogen compressor, the pipeline B that is connected with compression jar A, compression jar B, branch pipe A's one end all is equipped with the spray nozzle, and the spray nozzle is equallyd divide and is set up respectively in compression jar A, compression jar B.
The ionic liquid hydrogen compressor is characterized in that reversing valves are arranged on a pipeline C, a pipeline D and a pipeline B, and the reversing valve on the pipeline C is arranged on a pipeline between the low-pressure hydrogen tank and the compression tank A; the reversing valve on the pipeline D is arranged at the joint of the pipeline D and the branch pipe C; the reversing valve on the pipeline B is arranged at the joint of the pipeline B and the branch pipe A.
One end of a pipeline E is communicated with the buffer tank, the other end of the pipeline E is communicated with the heat exchanger, branch pipes are respectively arranged on the pipeline E and are communicated with the compression tank A and the compression tank B, and a reversing valve is arranged between the branch pipes of the compression tank A and the pipeline E close to the heat exchanger.
The ionic liquid hydrogen compressor, the switching-over valve is the switching-over ooff valve, all pass through the signal line with external controller and be connected.
The ionic liquid hydrogen compressor is provided with a filter in the buffer tank.
The ionic liquid hydrogen compressor and the ionic liquid pump are constant power variable plunger pumps.
The ionic liquid hydrogen compressor is characterized in that hydrogen is filled in the compression tank A and the compression tank B.
The ionic liquid hydrogen compressor, the start and stop of the ionic liquid pump, the start and stop of the heat exchanger, the temperature measurement of the heat exchanger and the liquid level controllers in the compression tank A and the compression tank B are all controlled by a controller.
A use method of an ionic liquid hydrogen compressor comprises the following specific operation steps:
(1) the motor drives the ionic liquid pump, and liquid in the ionic liquid tank enters the ionic liquid pump through a pipeline A to generate pressurized ionic liquid; hydrogen in the low-pressure hydrogen tank is sent to a compression tank A through a pipeline C, ionic liquid is sprayed into the compression tank A through a spray nozzle by a pipeline B and a reversing valve on the pipeline B, and the hydrogen in the compression tank A is compressed along with the increase of the amount of the ionic liquid in the compression tank A; the compressed hydrogen is cooled by the vaporific ionic liquid in the compression tank A, and the heat of the compressed hydrogen is directly exchanged into the ionic liquid and falls into the tank bottom;
(2) the compressed hydrogen enters a buffer tank through a pipeline D, the compression process is completed after the compression tank A is filled with the ionic liquid, the ionic liquid is extruded out of the compression tank A by the inlet pressure, and the ionic liquid enters a heat exchanger through a branch pipe at the lower part of the compression tank A to exchange heat and then returns to an ionic liquid tank;
(3) liquid in the ionic liquid box enters an ionic liquid pump through a pipeline A to generate pressurized ionic liquid, a control valve switches the pressurized ionic liquid from a compression tank A to the compression tank A, the ionic liquid is sprayed into a compression tank B through a spray nozzle on a branch pipe A, hydrogen in a low-pressure hydrogen tank is sent into the compression tank B through a pipeline C, and the hydrogen in the compression tank B is compressed along with the increase of the amount of the ionic liquid in the compression tank B; the compressed hydrogen is cooled by the vaporific ionic liquid in the compression tank B, and the heat of the compressed hydrogen is directly exchanged into the ionic liquid and falls into the tank bottom;
(4) and (3) connecting with the previous step, enabling the compressed hydrogen to enter the buffer tank through the branch pipe C, completing the compression process after the ionic liquid is filled in the compression tank B, extruding the ionic liquid out of the compression tank B by the intake pressure, and enabling the ionic liquid to enter the heat exchanger through the branch pipe at the lower part of the compression tank B for heat exchange and then return to the ionic liquid tank.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. the ionic liquid hydrogen compressor and the use method thereof, which are disclosed by the invention, have the characteristics of small vapor pressure, no volatilization, large specific heat capacity, good thermal stability, small compression ratio, difficulty in compression and no pollution to hydrogen by using the ionic liquid as a medium to compress hydrogen; the compressed hydrogen is fully cooled while being compressed, so that high-pressure gas with high compression ratio can be obtained through one-time compression, and the compression efficiency is higher; meanwhile, the compressed gas is not in contact with the movable part, the motion leakage condition is avoided, the leakage rate is low, the safety is high, only the ionic liquid participates in the volume change in the whole compression process, and the compressor can compress high-purity hydrogen because the property of the ionic liquid does not pollute the hydrogen.
2. The ionic liquid hydrogen compressor and the use method thereof compress compressed hydrogen by adopting an atomized internal cooling mode, so that heat generated by compression can be taken away timely and uniformly, the temperature of the hydrogen is not increased obviously, higher pressure can be obtained by one-time compression, and the high efficiency of isothermal compression can be approached. When the existing piston compressor compresses hydrogen, the temperature of the hydrogen in the cylinder is released everywhere, the temperature of the hydrogen rises, the compression efficiency is reduced, only one part of the hydrogen is radiated by the cylinder wall, most of the hydrogen also needs an intermediate heat exchanger to reduce the temperature of the hydrogen, then the hydrogen is compressed again, and high-pressure hydrogen can be obtained after multiple times of compression; the multiple compression also makes the existing compressor complex in structure and large in volume; in a single compression process, the compressor adopts a constant-power variable pump, so that different pressures are provided at different compression moments to compress hydrogen, the compression curve is closer to an ideal gas compression curve, less useless work is realized, and the efficiency is high.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure: 1. an ionic liquid tank; 2. a heat exchanger; 3. a low-pressure hydrogen tank; 4. a compression tank A; 5. a compression tank B; 6. a diverter valve; 7. a buffer tank; 8. a filter; 9. a motor-pump set; 10. a controller; 11. a branch pipe B; 12. a pipeline C; 13. a branch pipe A; 14. a pipeline D; 15. a pipeline B; 16. a pipeline A; 17. a branch pipe C; 18. and a pipeline E.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
The ionic liquid hydrogen compressor described with reference to fig. 1 comprises an ionic liquid tank 1, a motor-pump set 9, a low-pressure hydrogen tank 3 and a buffer tank 7, wherein the motor-pump set 9 is composed of a motor and an ionic liquid pump, the input end of the ionic liquid pump is connected with the ionic liquid tank 1 through a pipeline a16, the output end is communicated with a compression tank a4 through a pipeline B15, a branch pipe a13 communicated with the compression tank B5 is arranged on the pipeline B15, a pipeline C12 communicated with the compression tank B5 is arranged at the top of the low-pressure hydrogen tank 3, and a branch pipe B11 communicated with the compression tank a4 is arranged on the pipeline C12; a pipeline D14 communicated with the upper end of the compression tank A4 is arranged at the bottom of the buffer tank 7, and a branch pipe C17 communicated with the upper end of the compression tank B5 is arranged on the pipeline D14; and pipelines E18 communicated with the heat exchanger 2 are arranged on the outlets of the lower ends of the compression tank A4, the compression tank B5 and the buffer tank 8.
The ionic liquid hydrogen compressor is characterized in that one ends of a pipeline B15 and a branch pipe A13 which are connected with a compression tank A4 and a compression tank B5 are respectively provided with a spray nozzle, and the spray nozzles are respectively arranged in the compression tank A4 and the compression tank B5; the spray nozzles are arranged in the compression tank A4 and the compression tank B5, so that the ionic liquid enters the compression tank A4 and the compression tank B5 in a fog shape, the surface area of the fog-packaged ionic liquid is large, the fog-packaged ionic liquid can be fully contacted with compressed hydrogen, heat generated by the continuously compressed hydrogen can be timely and uniformly transferred into the ionic liquid, the temperature of the compressed hydrogen cannot be greatly increased, a high compression ratio can be obtained by one-time compression, and high pressure of 35, 70 or 90MPa can be obtained without multi-stage compression;
the ionic liquid hydrogen compressor is characterized in that a pipeline C12, a pipeline D14 and a pipeline B15 are respectively provided with a reversing valve 6, and the reversing valve 6 on the pipeline C12 is arranged on a pipeline between the low-pressure hydrogen tank 3 and the compression tank A4; the reversing valve 6 on the pipeline D14 is arranged at the connection part of the pipeline D14 and the branch pipe C17; the reversing valve 6 on line B15 is provided at the connection of line B15 and branch a 13.
In the ionic liquid hydrogen compressor, one end of a pipeline E18 is communicated with a buffer tank 7, the other end of the pipeline E18 is communicated with a heat exchanger 2, a branch pipe is arranged on a pipeline E18 and is communicated with a compression tank A4 and a compression tank B5 respectively, and a reversing valve 6 is arranged between the pipeline E18 close to the heat exchanger 2 and the branch pipe of the compression tank A4.
The reversing valve 6 is a reversing switch valve and is connected with an external controller 10 through a signal line; the reversing valve responds to the signal of the controller, and performs reversing and on-off control on each process, switching on and off of hydrogen entering, switching on and off of the spray nozzle of the ionic liquid, and emptying and switching the ionic liquid to a proper position.
The ionic liquid hydrogen compressor is characterized in that a filter 8 is arranged in the buffer tank 7; the buffer tank is a high-pressure container, the impact and the pulsation when the compression tank A4 and the compression tank B5 are switched are balanced, and the filter is used for further purifying the splashed ionic liquid and the hydrogen.
The ionic liquid hydrogen compressor is characterized in that the ionic liquid pump is a constant power variable plunger pump and is used for compressing hydrogen, the pressure of the hydrogen in the compression tank is different at different moments, the constant power pump can provide different pressures and flows according to the pressure of the hydrogen, and when the pressure of the hydrogen in the compression tank is low, the constant power pump can provide high-flow low-pressure ionic liquid for spraying and compressing the hydrogen; when the pressure of hydrogen in the compression tank is high, the constant-power pump can provide high-pressure low-flow ionic liquid for spraying and compressing hydrogen, and the constant-power pump always runs at full power in one compression period.
Hydrogen is filled in the ionic liquid hydrogen compressor, the compression tank A4 and the compression tank B5; the compression tank A4 and the compression tank B5 are two high-pressure containers, the entering hydrogen is compressed by the continuously increased ionic liquid in the close space to generate high-pressure hydrogen, and the two high-pressure containers are alternately used to complete uninterrupted and stable compression.
The start and stop of the ionic liquid hydrogen compressor, the start and stop of the heat exchanger 2, the temperature measurement of the heat exchanger 2 and the liquid level controllers in the compression tank A4 and the compression tank B5 are all controlled by a controller; the controller comprises a program controller PLC and an action electric control element, and has the functions of air inlet switch and switching, ionic liquid switch and switching, air exhaust switch and switching, temperature control, liquid level control, heat exchanger control, motor and ionic liquid pump large switch control, environmental hydrogen content monitoring and the like.
A use method of an ionic liquid hydrogen compressor comprises the following specific operation steps:
(1) the motor drives the ionic liquid pump, and liquid in the ionic liquid box 1 enters the ionic liquid pump through a pipeline A16 to generate pressurized ionic liquid; hydrogen in the low-pressure hydrogen tank 3 is sent to a compression tank A4 through a pipeline C12, ionic liquid is sprayed into the compression tank A4 through a spray nozzle by a reversing valve on a pipeline B15 and a pipeline B15, and the hydrogen in the compression tank A4 is compressed as the amount of the ionic liquid in the compression tank A4 increases; the compressed hydrogen is cooled by the atomized ionic liquid newly entering the compression tank A4, and the heat of the compressed hydrogen is directly exchanged into the ionic liquid and falls into the tank bottom;
the low-pressure hydrogen tank 3 is used for storing hydrogen for compression and providing a stable gas source for the compressor;
(2) the compressed hydrogen enters a buffer tank 7 through a pipeline D14, the compression process is completed after the ionic liquid fills a compression tank A4, the ionic liquid is extruded out of the compression tank A4 by the inlet pressure, and the ionic liquid enters a heat exchanger 2 through a branch pipe at the lower part of the compression tank A4 to exchange heat and then returns to an ionic liquid tank 1;
the heat exchanger absorbs the heat generated in the hydrogen compression process by the atomized ionic liquid, and then the ionic liquid enters the heat exchanger and is mixed with a cooling medium, such as: after heat exchange of water or air, heat generated by hydrogen compression is taken away, and the ionic liquid is in a low-temperature state and is used for absorbing the heat of the hydrogen generated in the compression process again;
(3) the liquid in the ionic liquid box 1 enters an ionic liquid pump through a pipeline A16 to generate pressurized ionic liquid, the control valve 6 switches the pressurized ionic liquid from a compression tank A4 to a compression tank A5, the ionic liquid is sprayed into the compression tank B5 through a spray nozzle on a branch pipe A13, hydrogen in the low-pressure hydrogen tank 3 is sent into a compression tank B5 through a pipeline C12, and the hydrogen in the compression tank B5 is compressed along with the increase of the amount of the ionic liquid in the compression tank B5; the compressed hydrogen is cooled by the atomized ionic liquid newly entering the compression tank B5, and the heat of the compressed hydrogen is directly exchanged into the ionic liquid and falls into the tank bottom;
(4) and in the last step, compressed hydrogen enters the buffer tank 7 through the branch pipe C17, the compression process is completed after the ionic liquid fills the compression tank B5, the ionic liquid is extruded out of the compression tank B5 by the inlet pressure, and the ionic liquid enters the heat exchanger 2 through the branch pipe at the lower part of the compression tank B5 to exchange heat and then returns to the ionic liquid tank 1.
Examples
A 90KW asynchronous motor is adopted to drive a constant power variable plunger pump to generate 75MPa of ionic liquid of a control valve; hydrogen in the low-pressure hydrogen tank 3 is sent to a compression tank A4 through a pipeline C12 and is sprayed out through a spray nozzle, and the low-pressure hydrogen tank 3 is subjected to 3m volume cultivation and 1MPa pressure; the compression tank A4 and the compression tank B5 both have the capacity of 40L and the pressure resistance of 100 MPa; along with the increase of the ionic liquid volume in compression tank A4, hydrogen in the jar is compressed, and the process that hydrogen compressed is cooled by the vaporific ionic liquid in the new jar that advances, and compressed hydrogen heat direct exchange falls into the tank bottoms in the ionic liquid, and the high temperature can not appear in the hydrogen of compression, and this process compression ratio 1: 75; the compressed hydrogen enters a buffer tank 7, the volume of the buffer tank 7 is 20L, the pressure resistance is 100MPa, and the compression process is completed after the compression tank A4 is filled with the ionic liquid; the air inlet pressure is 1MPa, the ionic liquid is extruded out of the compression tank A4, the heat generated by compressing hydrogen is taken away by the ionic liquid, the heat is taken away by a cooling medium after passing through the heat exchanger 2, and the cooled ionic liquid returns to the ionic liquid tank 1; the volume of the ionic liquid tank is 400L, and the ionic liquid tank is normal pressure; the heat exchanger adopts water cooling, the heat exchange area is 15 square meters, and the pressure resistance is 1 MPa; after the compression tank A4 finishes compression, the control valve 6 on the pipeline C12 is switched to the compression tank B5 to continue working, and the working principle of the device is the same as that of the compression tank A4; the pipeline pressure of each pipeline and branch pipe is 100MPa, and the pipe diameter is DN 50; the controller 10 adopts a PLC controller, a temperature control element adopts a thermal resistor and is arranged on a pipeline for ionic liquid to enter and exit the compression tank A4 and the compression tank A5, and a position sensor adopts a magnetic contact type and is arranged at the lower parts of the compression tanks A4 and A5; the output pressure of the ionic liquid hydrogen compressor is rated at 70MPa and is 75MPa at the maximum, and the compression efficiency reaches 89%.
The present invention is not described in detail in the prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments which fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides an ionic liquid hydrogen compressor, includes ionic liquid case, motor pump group, low pressure hydrogen jar and buffer tank, characterized by: the motor pump set consists of a motor and an ionic liquid pump, wherein the input end of the ionic liquid pump is connected with an ionic liquid tank through a pipeline A, the output end of the ionic liquid pump is communicated with a compression tank A through a pipeline B, a branch pipe A communicated with the compression tank B is arranged on the pipeline B, a pipeline C communicated with the compression tank B is arranged at the top of the low-pressure hydrogen tank, and a branch pipe B communicated with the compression tank A is arranged on the pipeline C; a pipeline D communicated with the upper end of the compression tank A is arranged at the bottom of the buffer tank, and a branch pipe C communicated with the upper end of the compression tank B is arranged on the pipeline D; and the outlets of the lower ends of the compression tank A, the compression tank B and the buffer tank are respectively provided with a pipeline E communicated with the heat exchanger.
2. The ionic liquid hydrogen compressor according to claim 1, wherein: and the pipeline B connected with the compression tank A and the compression tank B and one end of the branch pipe A are respectively provided with a spray nozzle, and the spray nozzles are respectively arranged in the compression tank A and the compression tank B.
3. The ionic liquid hydrogen compressor according to claim 1, wherein: the pipeline C, the pipeline D and the pipeline B are all provided with reversing valves, and the reversing valve on the pipeline C is arranged on a pipeline between the low-pressure hydrogen tank and the compression tank A; the reversing valve on the pipeline D is arranged at the joint of the pipeline D and the branch pipe C; the reversing valve on the pipeline B is arranged at the joint of the pipeline B and the branch pipe A.
4. The ionic liquid hydrogen compressor according to claim 1, wherein: one end of the pipeline E is communicated with the buffer tank, the other end of the pipeline E is communicated with the heat exchanger, branch pipes are arranged on the pipeline E and communicated with the compression tank A and the compression tank B respectively, and a reversing valve is arranged between the branch pipes of the compression tank A and the pipeline E close to the heat exchanger.
5. The ionic liquid hydrogen compressor according to claim 1, wherein: the reversing valves are reversing switch valves and are connected with an external controller through signal lines.
6. The ionic liquid hydrogen compressor according to claim 1, wherein: a filter is arranged in the buffer tank.
7. The ionic liquid hydrogen compressor according to claim 1, wherein: the ionic liquid pump is a constant power variable plunger pump.
8. The ionic liquid hydrogen compressor according to claim 1, wherein: hydrogen is filled in the compression tank A and the compression tank B.
9. The ionic liquid hydrogen compressor according to claim 1, wherein: the start and stop of the ionic liquid pump, the start and stop of the heat exchanger, the temperature measurement of the heat exchanger and the liquid level controllers in the compression tank A and the compression tank B are all controlled by a controller.
10. The method of using an ionic liquid hydrogen compressor as claimed in claim 1, wherein: the specific operation steps are as follows:
(1) the motor drives the ionic liquid pump, and liquid in the ionic liquid tank enters the ionic liquid pump through a pipeline A to generate pressurized ionic liquid; hydrogen in the low-pressure hydrogen tank is sent to a compression tank A through a pipeline C, ionic liquid is sprayed into the compression tank A through a spray nozzle by a pipeline B and a reversing valve on the pipeline B, and the hydrogen in the compression tank A is compressed along with the increase of the amount of the ionic liquid in the compression tank A; the compressed hydrogen is cooled by the vaporific ionic liquid in the compression tank A, and the heat of the compressed hydrogen is directly exchanged into the ionic liquid and falls into the tank bottom;
(2) the compressed hydrogen enters a buffer tank through a pipeline D, the compression process is completed after the compression tank A is filled with the ionic liquid, the ionic liquid is extruded out of the compression tank A by the inlet pressure, and the ionic liquid enters a heat exchanger through a branch pipe at the lower part of the compression tank A to exchange heat and then returns to an ionic liquid tank;
(3) liquid in the ionic liquid box enters an ionic liquid pump through a pipeline A to generate pressurized ionic liquid, a control valve switches the pressurized ionic liquid from a compression tank A to the compression tank A, the ionic liquid is sprayed into a compression tank B through a spray nozzle on a branch pipe A, hydrogen in a low-pressure hydrogen tank is sent into the compression tank B through a pipeline C, and the hydrogen in the compression tank B is compressed along with the increase of the amount of the ionic liquid in the compression tank B; the compressed hydrogen is cooled by the vaporific ionic liquid in the compression tank B, and the heat of the compressed hydrogen is directly exchanged into the ionic liquid and falls into the tank bottom;
(4) and (3) connecting with the previous step, enabling the compressed hydrogen to enter the buffer tank through the branch pipe C, completing the compression process after the ionic liquid is filled in the compression tank B, extruding the ionic liquid out of the compression tank B by the intake pressure, and enabling the ionic liquid to enter the heat exchanger through the branch pipe at the lower part of the compression tank B for heat exchange and then return to the ionic liquid tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111251970.5A CN113757072A (en) | 2021-10-27 | 2021-10-27 | Ionic liquid hydrogen compressor and using method thereof |
Applications Claiming Priority (1)
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| CN116044712A (en) * | 2023-01-16 | 2023-05-02 | 西安交通大学 | Ionic liquid compressor capable of controlling spraying to carry out liquid supplementing cooling by piston displacement and working method thereof |
| WO2024246521A1 (en) * | 2023-05-31 | 2024-12-05 | Flexergy Ltd | Apparatus', systems and methods for handling pressurised gas |
| WO2025053762A1 (en) * | 2023-09-08 | 2025-03-13 | Straen Energy As | System and method for compression of gas |
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