CN205227997U - Energy -saving liquefied natural gas flash distillation qi exhaustion nitrogen reliquefaction system - Google Patents
Energy -saving liquefied natural gas flash distillation qi exhaustion nitrogen reliquefaction system Download PDFInfo
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- CN205227997U CN205227997U CN201520986377.9U CN201520986377U CN205227997U CN 205227997 U CN205227997 U CN 205227997U CN 201520986377 U CN201520986377 U CN 201520986377U CN 205227997 U CN205227997 U CN 205227997U
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- waste heat
- water
- nitrogen
- bog
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 54
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 32
- 238000007701 flash-distillation Methods 0.000 title abstract 2
- 238000001816 cooling Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002918 waste heat Substances 0.000 claims abstract description 24
- 238000011084 recovery Methods 0.000 claims abstract description 12
- 238000003860 storage Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 4
- 239000003814 drug Substances 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract 2
- 229910001873 dinitrogen Inorganic materials 0.000 abstract 2
- 238000003795 desorption Methods 0.000 abstract 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 12
- 238000005265 energy consumption Methods 0.000 description 9
- 238000007906 compression Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 7
- 239000003345 natural gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes
- F25J1/0235—Heat exchange integration
- F25J1/0242—Waste heat recovery, e.g. from heat of compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/0002—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the fluid to be liquefied
- F25J1/0022—Hydrocarbons, e.g. natural gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/003—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production
- F25J1/0032—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration"
- F25J1/004—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures characterised by the kind of cold generation within the liquefaction unit for compensating heat leaks and liquid production using the feed stream itself or separated fractions from it, i.e. "internal refrigeration" by flash gas recovery
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
- F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
- F25J1/0243—Start-up or control of the process; Details of the apparatus used; Details of the refrigerant compression system used
- F25J1/0257—Construction and layout of liquefaction equipments, e.g. valves, machines
- F25J1/0262—Details of the cold heat exchange system
- F25J1/0264—Arrangement of heat exchanger cores in parallel with different functions, e.g. different cooling streams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2220/00—Processes or apparatus involving steps for the removal of impurities
- F25J2220/60—Separating impurities from natural gas, e.g. mercury, cyclic hydrocarbons
- F25J2220/62—Separating low boiling components, e.g. He, H2, N2, Air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/30—Compression of the feed stream
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides an energy -saving liquefied natural gas flash distillation qi exhaustion nitrogen reliquefaction system which characterized in that: utilize the unit including BOG reliquefaction unit, waste heat circulation unit and low -temperature nitrogen. BOG is in the BOG reliquefaction unit, through the compound calorimeter of water bath formula, air compressor, cooling tower, cryrogenic case and nitrogen gas flash tank denitrogenation liquefaction. Waste heat circulation unit utilizes the air compressor waste heat for the circulating water energy supply, and water is in the heating of waste heat recovery apparatus department flow into the compound calorimeter of water bath formula after, in, and turn cold after the BOG heat transfer of here, flow into the cooling tower again, for here BOG precooling, then heat again in flowing back to waste heat recovery apparatus. Low -temperature nitrogen utilizes the unit with the leading -in cooling tower of low -temperature nitrogen that the desorption obtained, refrigerates in coordination with here cold water, and after the heat transfer, the nitrogen gas temperature risees, easily carries out follow -up purification processing. The utility model discloses the inside waste heat of make full use of system is poor with the entropy, carries out the preliminary treatment to BOG, and reduction equipment, medicament are paid, and the energy saving is showing reduction in production cost, the benefit of improving production.
Description
Technical field
The utility model relates to natural gas production technical field, especially a kind of energy-saving liquefied natural gas flashed vapour denitrogenation liquefaction system again.
Background technology
LNG(liquefied natural gas) be widely used as a kind of high-grade energy, but because of its characteristic of very easily vaporizing of being heated, even if storing under adiabatic good condition, also inevitably produce BOG(liquefied natural gas flashed vapour).In order to maintain reservoir vessel inner pressure constant, need constantly to discharge BOG.Domestic LNG factory adopts liquefaction process mostly, reclaims the BOG that storage tank and loading station produce.This PROCESS FOR TREATMENT, can cause nitrogen content in system constantly to be accumulated, recycle this mist, not only can affect and reclaim makings amount, but also will increase refrigeration dosage and increasing device energy consumption.
Patent CN201220652685.4 describes a kind of device of liquefied natural gas coproduction liquid nitrogen, and natural gas is in denitrification column denitrogenation, and rich nitrogen is further purifying and preparing high-purity liquid nitrogen in fractionating column.Patent CN201310668914.0 describes a kind of liquefied natural gas and high purity nitrogen co-production equipment and production method, and the equipment such as natural gas via heat exchanger, heavy hydrocarbon knockout drum, rectifying column, knockout drum liquefy, and prepare High Purity Nitrogen.Patent CN201420523021.7 describes a kind of device of High-efficiency Gas denitrogenation, and natural gas carries out denitrogenation in scrubbing tower.Patent CN201410480303.8 describes a kind of method and system of separation of nitrogen from liquefied natural gas, cool rich nitrogen natural gas separation of nitrogen, BOG, through re-heat, compression, cooling enter denitrification column carry out rectifying and carry out secondary deep separation to nitrogen after ice chest deep cooling, carries out three separation at flash tank to nitrogen after cooling further and obtains rich nitrogen tail gas.Patent CN201520253648.X describes a kind of equipment for generation of denitrogenation liquefied natural gas product, utilizes main heat exchanger to carry out twice denitrogenation and liquefaction to nitrogenous natural gas.
In above patent, there is following shortcoming: be 1. absorbed in more and purify to removing the nitrogen obtained, and have ignored the utilization to its low temperature, thus purification energy consumption is increased, cost increases.2. when couple BOG does compression pre-treatment, be use extra power preheating completely, or use cryogenic compressor compression, cause dropping into increase, production cost increases.
Utility model content
The utility model provides a kind of energy-saving liquefied natural gas flashed vapour denitrogenation liquefaction system again, to solve above-mentioned the deficiencies in the prior art.Reclaiming heat of compressor, reaching the temperature that can use Conventional press for heating BOG, save equipment and energy consumption expenditure; Utilize the water-bath cold water after removing the low temperature nitrogen and heat exchange obtained to carry out precooling to the BOG after compression, the consumption of deep cooling box cryogen can be saved, save production cost further; After low temperature nitrogen heat exchange, temperature improves, then when purifying, will reduce energy consumption; In sum, enforcement of the present utility model, significantly can save energy consumption, reduces production cost, improves productivity effect.
In order to realize the purpose of this utility model, intend adopting following technology:
A kind of energy-saving liquefied natural gas flashed vapour denitrogenation liquefaction system again, is characterized in that: comprise BOG liquefaction unit, waste heat circulation unit and low temperature nitrogen range site again; Described BOG again liquefaction unit is made up of LNG storage tank, water-bath type recuperator, air compressor, cooling tower, deep cooling box and nitrogen flash tank, above-mentioned each structure is connected successively by pipeline, and described nitrogen flash tank liquid outlet is connected with described LNG storage tank by pipeline; Described waste heat circulation unit is made up of water-bath pipe, the waste heat recovery apparatus being arranged at described air compressor place and described cooling tower inner water cooling pipe in described water-bath type recuperator, described waste heat recovery apparatus is connected with described water-bath water inlet tube mouth by pipeline, described water-bath pipe discharge outlet is connected with described water cooling tube water inlet by pipeline, and described water cooling tube discharge outlet is connected with described waste heat recovery apparatus by pipeline; Described low temperature nitrogen range site is made up of air cooled lamp in described nitrogen flash tank and described cooling tower, and described nitrogen flash tank gas vent is connected with described air cooled lamp air inlet by pipeline.
Further, described air compressor is non-cryogenic air compressor.
Further, the pipeline connecting described deep cooling box and described nitrogen flash tank is provided with flow control valve.
Further, the pipeline connecting described nitrogen flash tank and described LNG storage tank is provided with control valve.
The beneficial effects of the utility model are:
1. utilize heat of compressor preheating BOG, save energy consumption;
2. utilize waste heat energy supply and recirculated water, preheating and precooling treatment are carried out to BOG, zero-emission, no pollution;
3. adopt the front pre-heating technique of compression, Conventional press can be used to substitute BOG special low temperature compressor, reduce equipment expenditure;
4. carry out precooling before pair BOG subzero treatment, deep cooling box cryogen consumption can be reduced, reduce medicament expenditure;
5. utilize and remove the low temperature nitrogen obtained, collaborative cooling BOG, improves pre-cold efficiency on the one hand, on the other hand, saves the energy consumption of subsequent purification nitrogen.
Accompanying drawing explanation
Fig. 1 shows structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, a kind of energy-saving liquefied natural gas flashed vapour denitrogenation liquefaction system again, is characterized in that: comprise BOG liquefaction unit A, waste heat circulation unit B and low temperature nitrogen range site C again; Described BOG again liquefaction unit A is made up of LNG storage tank 1, water-bath type recuperator 2, air compressor 3, cooling tower 4, deep cooling box 5 and nitrogen flash tank 6, above-mentioned each structure is connected successively by pipeline, and described nitrogen flash tank 6 liquid outlet is connected with described LNG storage tank 1 by pipeline.The pre-heat treatment is carried out to the BOG before compression, Conventional press can be used to substitute BOG special low temperature compressor, save equipment expenditure; Precooling treatment is set before deep cooling, deep cooling box cryogen consumption can be saved, save medicament expenditure.
Described waste heat circulation unit B is made up of water-bath pipe 201, the waste heat recovery apparatus 7 being arranged at described air compressor 3 place and described cooling tower 4 inner water cooling pipe 401 in described water-bath type recuperator 2, described waste heat recovery apparatus 7 is connected with described water-bath pipe 201 water inlet by pipeline, described water-bath pipe 201 discharge outlet is connected with described water cooling tube 401 water inlet by pipeline, and described water cooling tube 401 discharge outlet is connected with described waste heat recovery apparatus 7 by pipeline.Utilize waste heat energy supply, save energy consumption; Waterway circulating, does not produce discharge and pollutes.
Described low temperature nitrogen range site C is made up of air cooled lamp 402 in described nitrogen flash tank 6 and described cooling tower 4, and described nitrogen flash tank 6 gas vent is connected with described air cooled lamp 402 air inlet by pipeline.Utilize the low temperature of nitrogen, collaborative precooling, improves pre-cold efficiency on the one hand, on the other hand, saves the energy consumption of subsequent purification nitrogen.
In described water-bath pipe 201, in water (flow) direction and water-bath type recuperator 2, BOG approach axis is reverse.Be beneficial to abundant heat exchange.
In described water cooling tube 401, in water (flow) direction and described air cooled lamp 402, in airflow direction and described cooling tower 4, BOG approach axis is reverse.Be beneficial to abundant heat exchange.
The pipeline connecting described deep cooling box 5 and described nitrogen flash tank 6 is provided with flow control valve.Be convenient to control flashing pressure and temperature.
The pipeline connecting described nitrogen flash tank 6 and described LNG storage tank 1 is provided with control valve.Be convenient to control liquid level in described LNG tank 1, prevent rolling.
The BOG produced in described LNG tank 1, temperature is lower, with the hot bath heat exchange of being heated by described waste heat recovery apparatus 7 in described water-bath type recuperator 2, temperature rises to more than-40 DEG C, after being inhaled into the compression of described air compressor 3, enter the low temperature nitrogen heat exchange that the cold water of discharging with the water-bath of described water-bath type recuperator 2 in described cooling tower 4 and denitrogenation obtain, again by after described deep cooling box 5 deep cooling, entered in described nitrogen flash tank 6 by described Flux Valve Control and flash off nitrogen, nitrogen is expelled in described air cooled lamp 402 by described nitrogen flash tank 6 exhaust outlet, in described nitrogen flash tank 6, liquid is LNG, controlled to flow in described LNG storage tank 1 by described control valve.
Claims (4)
1. an energy-saving liquefied natural gas flashed vapour denitrogenation liquefaction system again, is characterized in that: comprise BOG liquefaction unit (A), waste heat circulation unit (B) and low temperature nitrogen range site (C) again; Described BOG again liquefaction unit (A) is made up of LNG storage tank (1), water-bath type recuperator (2), air compressor (3), cooling tower (4), deep cooling box (5) and nitrogen flash tank (6), above-mentioned each structure is connected successively by pipeline, and described nitrogen flash tank (6) liquid outlet is connected with described LNG storage tank (1) by pipeline; Described waste heat circulation unit (B) is made up of described water-bath type recuperator (2) interior water-bath pipe (201), the waste heat recovery apparatus (7) being arranged at described air compressor (3) place and described cooling tower (4) inner water cooling pipe (401), described waste heat recovery apparatus (7) is connected with described water-bath pipe (201) water inlet by pipeline, described water-bath pipe (201) discharge outlet is connected with described water cooling tube (401) water inlet by pipeline, and described water cooling tube (401) discharge outlet is connected with described waste heat recovery apparatus (7) by pipeline; Described low temperature nitrogen range site (C) is made up of described nitrogen flash tank (6) and described cooling tower (4) interior air cooled lamp (402), and described nitrogen flash tank (6) gas vent is connected with described air cooled lamp (402) air inlet by pipeline.
2. one according to claim 1 energy-saving liquefied natural gas flashed vapour denitrogenation reliquefaction installation, is characterized in that, described air compressor (3) is non-cryogenic air compressor.
3. one according to claim 1 energy-saving liquefied natural gas flashed vapour denitrogenation reliquefaction installation, is characterized in that, the pipeline connecting described deep cooling box (5) and described nitrogen flash tank (6) is provided with flow control valve.
4. one according to claim 1 energy-saving liquefied natural gas flashed vapour denitrogenation reliquefaction installation, is characterized in that, the pipeline connecting described nitrogen flash tank (6) and described LNG storage tank (1) is provided with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986377.9U CN205227997U (en) | 2015-12-03 | 2015-12-03 | Energy -saving liquefied natural gas flash distillation qi exhaustion nitrogen reliquefaction system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520986377.9U CN205227997U (en) | 2015-12-03 | 2015-12-03 | Energy -saving liquefied natural gas flash distillation qi exhaustion nitrogen reliquefaction system |
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| Publication Number | Publication Date |
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| CN205227997U true CN205227997U (en) | 2016-05-11 |
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| CN201520986377.9U Expired - Fee Related CN205227997U (en) | 2015-12-03 | 2015-12-03 | Energy -saving liquefied natural gas flash distillation qi exhaustion nitrogen reliquefaction system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458788A (en) * | 2018-12-09 | 2019-03-12 | 大连海事大学 | The LNG storage tank re-liquefied recycling heat-exchange system of BOG self-loopa and method |
| CN110496491A (en) * | 2019-09-20 | 2019-11-26 | 苏州市晟浩源节能科技有限公司 | A kind of device and method of the separation containing nitrogen in nitrogen vapor |
| CN112393526A (en) * | 2020-11-05 | 2021-02-23 | 华南理工大学 | Process and system for preparing LNG (liquefied Natural gas) cold-electricity cogeneration by coal-based synthesis gas cryogenic separation |
| CN115127304A (en) * | 2022-06-30 | 2022-09-30 | 四川帝雷蒙科技有限公司 | BOG reliquefaction and recovery system and method capable of improving helium purity |
-
2015
- 2015-12-03 CN CN201520986377.9U patent/CN205227997U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109458788A (en) * | 2018-12-09 | 2019-03-12 | 大连海事大学 | The LNG storage tank re-liquefied recycling heat-exchange system of BOG self-loopa and method |
| CN109458788B (en) * | 2018-12-09 | 2023-05-26 | 大连海事大学 | BOG self-circulation re-liquefaction recovery heat exchange system and method for LNG storage tank |
| CN110496491A (en) * | 2019-09-20 | 2019-11-26 | 苏州市晟浩源节能科技有限公司 | A kind of device and method of the separation containing nitrogen in nitrogen vapor |
| CN112393526A (en) * | 2020-11-05 | 2021-02-23 | 华南理工大学 | Process and system for preparing LNG (liquefied Natural gas) cold-electricity cogeneration by coal-based synthesis gas cryogenic separation |
| CN112393526B (en) * | 2020-11-05 | 2024-04-05 | 华南理工大学 | Process and system for preparing LNG (liquefied Natural gas) combined cooling and power generation through coal-based synthesis gas cryogenic separation |
| CN115127304A (en) * | 2022-06-30 | 2022-09-30 | 四川帝雷蒙科技有限公司 | BOG reliquefaction and recovery system and method capable of improving helium purity |
| CN115127304B (en) * | 2022-06-30 | 2023-11-17 | 四川帝雷蒙科技有限公司 | BOG reliquefaction recovery system and method capable of improving helium purity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160511 Termination date: 20191203 |