CN106122756A - A kind of liquefied natural gas tank car reclaiming BOG - Google Patents

A kind of liquefied natural gas tank car reclaiming BOG Download PDF

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Publication number
CN106122756A
CN106122756A CN201610678080.5A CN201610678080A CN106122756A CN 106122756 A CN106122756 A CN 106122756A CN 201610678080 A CN201610678080 A CN 201610678080A CN 106122756 A CN106122756 A CN 106122756A
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CN
China
Prior art keywords
bog
natural gas
liquefied natural
tank car
storage tank
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
Application number
CN201610678080.5A
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Chinese (zh)
Inventor
陈鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sino Way (beijing) Technology Co Ltd
Original Assignee
Sino Way (beijing) Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sino Way (beijing) Technology Co Ltd filed Critical Sino Way (beijing) Technology Co Ltd
Priority to CN201610678080.5A priority Critical patent/CN106122756A/en
Publication of CN106122756A publication Critical patent/CN106122756A/en
Pending legal-status Critical Current

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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
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
    • 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
    • F25J1/0275—Construction and layout of liquefaction equipments, e.g. valves, machines adapted for special use of the liquefaction unit, e.g. portable or transportable devices
    • 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
    • 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
    • F25J1/0025—Boil-off gases "BOG" from storages
    • 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
    • F25J1/0047—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 an "external" refrigerant stream in a closed vapor compression cycle
    • F25J1/0052—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 an "external" refrigerant stream in a closed vapor compression cycle by vaporising a liquid refrigerant 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
    • 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
    • F25J1/0211—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 using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle
    • F25J1/0212—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 using a multi-component refrigerant [MCR] fluid in a closed vapor compression cycle as a single flow MCR cycle
    • 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
    • F25J1/0225—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 using other external refrigeration means not provided before, e.g. heat driven absorption chillers
    • 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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0119—Shape cylindrical with flat end-piece
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • 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
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
    • 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
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • 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
    • F17C2227/0157—Compressors
    • 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
    • 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
    • F17C2227/0369—Localisation of heat exchange in or on a vessel
    • 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
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/032—Treating the boil-off by recovery
    • F17C2265/033—Treating the boil-off by recovery with 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
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use
    • 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
    • F25J2210/00—Processes characterised by the type or other details of the feed stream
    • F25J2210/60—Natural gas or synthetic natural gas [SNG]
    • 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
    • F25J2270/908—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by regenerative chillers, i.e. oscillating or dynamic systems, e.g. Stirling refrigerator, thermoelectric ("Peltier") or magnetic refrigeration
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/62—Details of storing a fluid in a tank

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The present invention proposes a kind of liquefied natural gas tank car reclaiming BOG, including LNG tank car, LNG storage tank is installed, for absorbing the compressor of BOG gas and for the refrigeration machine of the BOG that liquefies on described LNG tank car, while the present invention is capable of BOG recovery, energy waste can either be avoided, again it can be avoided that cause environmental pollution.

Description

A kind of liquefied natural gas tank car reclaiming BOG
Technical field
The invention belongs to liquefied natural gas transport technical field, particularly to a kind of liquefied natural gas tank car reclaiming BOG.
Background technology
At present, liquefied natural gas is a kind of clean energy resource, and its discharge is far below coal, oil.In recent years, China is sent out energetically Exhibition LNG application.Main application has generating, transport, chemical industry, the energy.LNG is liquefying, is storing, is transporting, is using each ring Joint is required for leaving in thermally insulated container.Technology is that heat transfer from environment to LNG is completely eliminated at present, and LNG can constantly evaporate, Become BOG (Boil of gas).With for the high vacuum multiple layer heat insulation storage tank that current insulation effect is best, daily evaporation amount is About 0.3%.Accumulate over a long period, have a lot of BOG every day and produce.The BOG of Large LNG device can be sent by condensation, compression Enter pipeline, become CNG form reclaim.But, the most small-sized LNG device often uses emptying measure, on the one hand causes energy Source is wasted, and on the other hand causes environmental pollution.
Therefore, need now a kind of liquefied natural gas tank car reclaiming BOG badly, energy waste can either be avoided, can keep away again Exempt from environmental pollution.
Summary of the invention
The present invention proposes a kind of liquefied natural gas tank car reclaiming BOG, solves prior art middle-size and small-size LNG device easy The problem causing environmental pollution and energy waste.
The technical scheme is that and be achieved in that: reclaim the liquefied natural gas tank car of BOG, including LNG tank car, LNG LNG storage tank is installed, for absorbing the compressor of BOG gas and for the refrigeration machine of the BOG gas that liquefies on tank car.
As one preferred embodiment, the vaporizer of refrigeration machine is arranged in LNG storage tank.
As one preferred embodiment, the vaporizer of refrigeration machine is arranged in thermally insulated container, and thermally insulated container is by pipe Road connects with LNG storage tank.
As one preferred embodiment, refrigeration machine includes mixture throttling refrigerating machine, G-M refrigeration machine, pulse tube Any one or a few in refrigeration machine, sterlin refrigerator, hot sound refrigerating machine.
As one preferred embodiment, LNG storage tank is heat insulation-type storage tank, adiabatic method include vacuum-powders insulation, Any one or a few in vacuum insulation, high vacuum multiple layer heat insulation.
As one preferred embodiment, the BOG gas of compressor and the BOG gas of compressor discharge are entered in backheat Device carries out heat exchange.As one preferred embodiment, the pipeline that thermally insulated container connects with LNG storage tank is provided with switch Valve.
As one preferred embodiment, LNG storage tank is provided with feed tube and drain pipe, and feed tube is provided with hydraulic pressure Table and air cutoff valve, drain pipe is provided with stop valve and relief valve.
As one preferred embodiment, it is provided with unloading unit bottom LNG storage tank.
As one preferred embodiment, feed tube connects supercharger, is provided with resistance between feed tube and supercharger Firearm.
As one preferred embodiment, LNG storage tank being provided with temperature sensing device, temperature sensing device connects to be had Alarm device, temperature sensing device detects that, when temperature is higher than preset value in LNG storage tank, alarm device carries out instruction of reporting to the police.
After have employed technique scheme, the invention has the beneficial effects as follows: by arranging on the tank car of liquefied natural gas Refrigeration machine, and the vaporizer of refrigeration machine is arranged in LNG storage tank, or by the vaporizer of refrigeration machine is arranged at thermal insulation In container, then thermally insulated container is connected with LNG storage tank, it is ensured that zero evaporation of liquefied natural gas, be simultaneously achieved energy-conservation and Environmental protection；Additionally, arrive the place needing to reclaim BOG also by LNG tank car, draw BOG by compressor and enter LNG storage tank In, then by refrigeration machine, BOG carried out cooling liquefaction, it is achieved that the recovery of BOG.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used To obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention one；
Fig. 2 is the structural representation of the embodiment of the present invention two.
In figure, 1, refrigeration machine；11, vaporizer；2, LNG storage tank；3, LNG tank car；4, thermally insulated container；5, pipeline；6, compression Machine；7, regenerator.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.
Embodiment one
As it is shown in figure 1, the present embodiment reclaims the liquefied natural gas tank car of BOG, including LNG tank car 3, LNG tank car 3 is installed Have LNG storage tank 2, regenerator 7, for absorbing the compressor 6 of BOG gas and for the refrigeration machine 1 of the BOG gas that liquefies.Refrigeration The vaporizer 11 of machine 1 is arranged in LNG storage tank 2.Refrigeration machine 1 includes mixture throttling refrigerating machine 1, G-M refrigeration machine 1, pulse Any one or a few in control cold 1, sterlin refrigerator 1, hot sound refrigerating machine 1.LNG storage tank 2 is heat insulation-type storage tank, absolutely Hot mode includes any one or a few in vacuum-powders insulation, vacuum insulation, high vacuum multiple layer heat insulation.Regenerator 7 includes Fin-tube type heat exchanger, plate type heat exchanger, double pipe heat exchanger.
The inlet and outlet of compressor 6 connects with regenerator 7 respectively, and the BOG of entrance compressor 6 and compressor 6 are discharged BOG heat exchange in regenerator 7.It is provided with switch valve on the pipeline 5 that thermally insulated container 4 connects with LNG storage tank 2.LNG storage tank 2 is arranged There are feed tube and drain pipe, feed tube is provided with hydralic pressure gauge and air cutoff valve, drain pipe is provided with stop valve and safety Valve.It is provided with unloading unit bottom LNG storage tank 2.Feed tube connects supercharger, is provided with back-fire relief between feed tube and supercharger Device.Being provided with temperature sensing device in LNG storage tank 2, temperature sensing device connects has alarm device, temperature sensing device to detect When in LNG storage tank 2, temperature is higher than preset value, alarm device carries out instruction of reporting to the police.(not shown in the contents of the section figure)
Embodiment two
Unlike embodiment one, in the present embodiment, refer to Fig. 2, the vaporizer 11 of refrigeration machine 1 is arranged on adiabatic appearance In device 4, thermally insulated container 4 is connected with LNG storage tank 2 by pipeline 5.Compressor 6 is drawn BOG and is entered LNG storage tank 2.Vaporizer 11 is pacified Being contained in thermally insulated container 4, thermally insulated container 4 is connected by pipeline 5 with LNG storage tank 2.The gas of LNG storage tank 2 enters thermally insulated container 4, By vaporizer 11 cooling liquid.Natural gas after liquefaction returns LNG storage tank 2 by pipeline 5.
The operation principle of the liquefied natural gas tank car of this recovery BOG is: the present invention is by the tank car of liquefied natural gas Refrigeration machine 1 is set, and the vaporizer 11 of refrigeration machine 1 is arranged in LNG storage tank 2, or by the vaporizer by refrigeration machine 1 11 are arranged in thermally insulated container 4, are then connected with LNG storage tank 2 by thermally insulated container 4, it is ensured that zero evaporation of liquefied natural gas, with Time achieve energy-conservation and environmental protection；Additionally, arrive the place needing to reclaim BOG also by LNG tank car 3, drawn by compressor 6 BOG enters in LNG storage tank 2, then by refrigeration machine 1, BOG carries out cooling liquefaction, it is achieved that the recovery of BOG.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.

Claims (10)

1. reclaim a liquefied natural gas tank car of BOG, including LNG tank car, it is characterised in that
LNG storage tank is installed, for absorbing the compressor of BOG gas and for the system of the BOG gas that liquefies on described LNG tank car Cold.
The liquefied natural gas tank car of recovery BOG the most according to claim 1, it is characterised in that the evaporation of described refrigeration machine Device is arranged in described LNG storage tank, and the BOG of the BOG and the discharge of described compressor that enter described compressor is carried out in regenerator Heat exchange.
The liquefied natural gas tank car of recovery BOG the most according to claim 1, it is characterised in that the evaporation of described refrigeration machine Device is arranged in thermally insulated container, and described thermally insulated container is connected with described LNG storage tank by pipeline.
4. according to the liquefied natural gas tank car of the recovery BOG according to any one of claim 1-3, it is characterised in that described system Cold includes in mixture throttling refrigerating machine, G-M refrigeration machine, pulse tube refrigerating machine, sterlin refrigerator, hot sound refrigerating machine Any one or a few.
5. according to the liquefied natural gas tank car of the recovery BOG according to any one of claim 1-3, it is characterised in that described LNG Storage tank is heat insulation-type storage tank, and adiabatic method includes any one in vacuum-powders insulation, vacuum insulation, high vacuum multiple layer heat insulation Or it is several.
The liquefied natural gas tank car of recovery BOG the most according to claim 3, it is characterised in that described thermally insulated container and institute State and be provided with switch valve on the pipeline of LNG storage tank connection.
The liquefied natural gas tank car of recovery BOG the most according to claim 1, it is characterised in that described LNG storage tank is provided with Feed tube and drain pipe, described feed tube is provided with hydralic pressure gauge and air cutoff valve, described drain pipe is provided with stop valve And relief valve.
The liquefied natural gas tank car of recovery BOG the most according to claim 1, it is characterised in that described LNG reservoir bottom sets It is equipped with unloading unit.
The liquefied natural gas tank car of recovery BOG the most according to claim 7, it is characterised in that described feed tube connects to be had Supercharger, is provided with spark arrester between described feed tube and supercharger.
The liquefied natural gas tank car of recovery BOG the most according to claim 1, it is characterised in that set in described LNG storage tank Being equipped with temperature sensing device, described temperature sensing device connects has alarm device, described temperature sensing device LNG storage tank to be detected When interior temperature is higher than preset value, described alarm device carries out instruction of reporting to the police.
CN201610678080.5A 2016-08-16 2016-08-16 A kind of liquefied natural gas tank car reclaiming BOG Pending CN106122756A (en)

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CN205938507U (en) * 2016-08-16 2017-02-08 中科赛德（北京）科技有限公司 Retrieve BOG's liquefied natural gas tank wagon

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CN101975335A (en) * 2010-09-26 2011-02-16 上海交通大学 Reliquefaction device for boil-off gas from liquefied natural gas vehicle gas filling station
CN202361752U (en) * 2011-12-16 2012-08-01 重庆耐德能源装备集成有限公司 Recovery system of BOG (boil-off gas) in liquefied natural gas mixed refrigerating technologies
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Publication number Priority date Publication date Assignee Title
CN111344528A (en) * 2017-11-21 2020-06-26 乔治洛德方法研究和开发液化空气有限公司 BOG recondenser and LNG supply system provided with same
CN111344528B (en) * 2017-11-21 2022-02-01 乔治洛德方法研究和开发液化空气有限公司 BOG recondenser and LNG supply system provided with same

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Application publication date: 20161116