CN207316460U - Liquefied gas at low temp evaporation gas recycling system and compressor - Google Patents
Liquefied gas at low temp evaporation gas recycling system and compressor Download PDFInfo
- Publication number
- CN207316460U CN207316460U CN201721201805.8U CN201721201805U CN207316460U CN 207316460 U CN207316460 U CN 207316460U CN 201721201805 U CN201721201805 U CN 201721201805U CN 207316460 U CN207316460 U CN 207316460U
- Authority
- CN
- China
- Prior art keywords
- compressor
- gas
- valve
- cryogenic liquid
- cryogenic
- 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.)
- Expired - Fee Related
Links
- 238000004064 recycling Methods 0.000 title claims abstract description 14
- 238000001704 evaporation Methods 0.000 title claims abstract description 13
- 230000008020 evaporation Effects 0.000 title claims abstract description 13
- 239000007789 gas Substances 0.000 claims abstract description 105
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 239000000498 cooling water Substances 0.000 claims abstract description 5
- 238000005299 abrasion Methods 0.000 abstract description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 229910052786 argon Inorganic materials 0.000 description 5
- 238000011084 recovery Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- -1 then Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides a kind of liquefied gas at low temp evaporation gas recycling system and compressor, bus-bar is filled including cryogenic liquid tank lorry, cryogenic liquid storage tank, cryogenic insulated cylinder, compressor and gases at high pressure, the gas phase end of cryogenic liquid tank lorry is connected on compressor inleting pipe road by the first branch pipe and valve V1；The gas phase end of cryogenic liquid storage tank is connected on compressor inleting pipe road by the second branch pipe and valve V2；The gas phase end of cryogenic insulated cylinder is connected on compressor inleting pipe road by the 3rd branch pipe and valve V3；Boost gauge, air intake valve V4, safety valve V5 and exhaust gas pressure gage are set on compressor inleting pipe road；Bosh is set in compressor, heat exchanger is installed in bosh.Compressor casing, cylinder cap, which are immersed in cooling water, to be conducive to compress the dissipation of heat, and piston speed is less than 0.93m/s, and the delivery temperature of compressor is significantly lower than isentropic Compression temperature, runs the abrasion for also reducing part under low speed, improve the durability of machine.
Description
Technical field
Liquefied gas at low temp boil-off gas recovery technology field is the utility model is related to, is related specifically to liquid oxygen（LO2）, liquid nitrogen
（LN2）, liquid argon（LAr）Evaporation gas recycling system and compression.
Background technology
As air separation plant maximizes, liquefied, packaged air separation plant is gradually eliminated, and the substitute is various regions foundation
Liquefied gas at low temp fueling station, fills cryogenic insulated cylinder and gas cylinder, but how liquefied gas at low temp boil-off gas returns
The technical problem of receipts just generates.
One of characteristic of liquefied gas at low temp is that the pressure of storage is higher, then heat of vaporization is smaller, that is to say, that easier vapour
Change.By taking liquid argon as an example, when mono- atmospheric pressure of 90K, heat of vaporization is 1525 kilocalories/Kg, corresponding when pressure is raised to 0.78MPa
Saturation temperature is 115K, its heat of vaporization drops to 1240 kilocalories/kg, in accordance with the above, should be maintained at storage tank as much as possible
Operation is preferable under relatively low pressure, such as 0.45MPa, is beneficial to the storage of liquefied gas at low temp, is conducive to cryogenic liquid
Pump fills gas cylinder, is conducive to that cryogenic insulated cylinder is filling, reduces the loss of gas.
Under normal conditions, the cryogenic liquid storage tank of liquefied gas at low temp fueling station, cryogenic liquid tank lorry operating pressure are
0.8Mpa.Cryogenic liquid storage tank pressure is close to safety valve setting value or cryogenic liquid tank lorry, cryogenic liquid storage tank and Cryo Heat Insulation
Gas cylinder internal air pressure is too high and when can not be filled with cryogenic liquid, then boil-off gas must be handled, processing method has following several
Kind：
First, directly diffused to air, this method can waste many gases, cause economic loss.
2nd, condensation recycling is carried out with the method for refrigeration, CN01124633.2 discloses a kind of argon gas recovery method, using arteries and veins
Control is cold and magnetic force refrigeration system produces refrigerating refrigerant fluid, and indirect thermal friendship is carried out by means of coolant fluid in heat exchanger
Change, low-temperature steam is condensed and is produced cryogenic liquid, then, liquid argon is sent into basin.This method can effectively recycle low
Warm steam, however, this needs larger investment and operation cost.
3rd, low-temperature evaporation gas being recycled with the method for compression, this is also to apply a more technology at present,
CN200820161835.5 discloses low-temperature gas reclaiming device, including low-temperature tanker storage tank, and tank car storage tank passes through pipeline and control
Energy-saving tank is pressed in valve connection processed, middle pressure energy-saving tank connects gasifier by pipeline, and gasifier connects low by pipeline with pressure reducing valve
Surge tank is pressed, low pressure buffer tank is sequentially connected compressor, high pressure drier and gas cylinder by pipeline and charges area.The retracting device has
Effect has recycled boil-off gas, reduces waste, there is higher economic value.But there is also as follows for the low-temperature gas reclaiming device
Problem：
On middle pressure energy-saving tank and low pressure buffer tank：In recovery system, cryogenic liquid tank lorry, cryogenic liquid storage tank and low
Warm insulated gas cylinder natively has larger volume space, can provide the various transmission rates of gas, as long as compressor type selecting obtains
When and there is no matching problem between compressor maximum inlet flow rate.
From the point of view of the energy, gasifier is set to waste cryogenic cold energy.
In addition, commercially using membrane compressor recycling argon gas, due to membrane compressor, there is rupture of diaphragm
Polluted gas risk is produced, and operation cost is higher.
When recycling oxygen, it is common to use a kind of trade name 3Z3.5W-1.67/165 type oxygen compressors, this compressor
Compression is higher, burns in order to prevent, and filling distilled water cools down cylinder and gas in cylinder, thereby increase gas and
The water content of gas cylinder, causes gas cylinder corrosion and gas quality decline.
The content of the invention
It is to be solved in the utility model be reduce disadvantages mentioned above of the prior art some or all, and provide a kind of low
Warm liquid gas evaporation gas recycling system and compressor, can effectively realize the recycling of liquefied gas at low temp boil-off gas, fully
Using the cold energy and pressure energy of cryogenic gas, improve compression efficiency and be conducive to the dissipation of the heat of compression, improve making for compressor
Use the service life.
In order to solve the above technical problems, technical solution is used by the utility model：A kind of low-temperature liquid gas evacuator body
Gas recovery system and compressor, including cryogenic liquid tank lorry, cryogenic liquid storage tank, cryogenic insulated cylinder, compressor and high pressure
Gas filling bus-bar, the gas phase end of cryogenic liquid tank lorry are connected to compressor inleting pipe road by the first branch pipe and valve V1
On；The gas phase end of cryogenic liquid storage tank is connected on compressor inleting pipe road by the second branch pipe and valve V2；Cryo Heat Insulation gas
The gas phase end of bottle is connected on compressor inleting pipe road by the 3rd branch pipe and valve V3；Set on compressor inleting pipe road into
Atmospheric pressure table, air intake valve V4, safety valve V5 and exhaust gas pressure gage, with the admission pressure of air intake valve V4 control compressors；Pressure
Bosh is set in contracting machine, heat exchanger is installed in bosh, liquefied gas at low temp boil-off gas is changed indirectly with cooling water
Heat, the gas after re-heat are buffered after the one stage of compression of compressor, level-one cooler, two-stage compression, secondary coolers
Tank, bus-bar is filled by valve V7 discharge lines to gases at high pressure.
In preferable scheme, the cylinder inner wall of the compressor is communicated with atmospheric environment.Transfer heat to surrounding environment
Provide larger surface area.
In preferable scheme, the method for the more heats of compressor dissipation and the piston speed of reduction compressor are mutually tied
Close, the piston speed of compressor is preferably less than 0.93m/s.
A kind of liquefied gas at low temp evaporation gas recycling system and compressor provided by the utility model, it is several more than
Item technical measures, make full use of the cold energy and pressure energy of cryogenic gas, reduce energy consumption, the delivery temperature of compressor is significantly low
Operation also reduces the abrasion of part at isentropic Compression temperature, low speed, improves the durability of machine.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples.
Fig. 1 is the overall structure diagram of the utility model.
In figure：Cryogenic liquid tank lorry 1, cryogenic liquid storage tank 2, cryogenic insulated cylinder 3, compressor 4, gases at high pressure fill remittance
Stream row 5, the first branch pipe 6, the second branch pipe 7, the 3rd branch pipe 8, compressor inleting pipe road 9, heat exchanger 10, one stage of compression 11, one
Level cooler 12, two-stage compression 13, bosh 14, secondary coolers 15, the cylinder inside wall of cylinder 16,17, surge tank 18, compressor
Exhaust pipe 19, boost gauge 20, exhaust gas pressure gage 21.
Embodiment
In Fig. 1, a kind of liquefied gas at low temp evaporation gas recycling system and compressor, including cryogenic liquid tank lorry 1, low temperature
Wet tank 2, cryogenic insulated cylinder 3, compressor 4 and gases at high pressure fill bus-bar 5, the gas phase end of cryogenic liquid tank lorry 1
It is connected to by the first branch pipe 6 and valve V1 on compressor inleting pipe road 9；The gas phase end of cryogenic liquid storage tank 2 passes through second
Pipe 7 and valve V2 are connected on compressor inleting pipe road 9；The gas phase end of cryogenic insulated cylinder 3 passes through the 3rd branch pipe 8 and valve V3
It is connected on compressor inleting pipe road 9；Boost gauge 20, air intake valve V4, safety valve are set on compressor inleting pipe road 9
V5, exhaust gas pressure gage 21, with the admission pressure of air intake valve V4 control compressors；Compressor 4 sets bosh 14, cooling water
Heat exchanger 10, liquefied gas at low temp boil-off gas and cooling water indirect heat exchange are installed, the gas after re-heat is through overvoltage in groove 14
After the one stage of compression 11 of contracting machine 4, level-one cooler 12, two-stage compression 13, secondary coolers 15, buffered tank 18, by valve V7,
Discharge line 19 fills bus-bar 5 to gases at high pressure.
The cylinder inner wall 16,17 of the compressor 4 is communicated with atmospheric environment.Surrounding environment offer is so provided
Larger surface area.
The method of the more heats of compressor dissipation is combined with reducing the piston speed of compressor, compressor
Piston speed is preferably less than 0.93m/s.
By above-mentioned several technical measures, the cold energy and pressure energy of cryogenic gas are made full use of, reduces energy consumption, compressed
The delivery temperature of machine is significantly lower than isentropic Compression temperature, runs the abrasion for also reducing part under low speed, improves machine
Durability.
Liquefied gas at low temp boil-off gas reclaimer operation includes the following steps：
1) after cryogenic liquid tank lorry 1 unloads liquid, if tank car storage tank is more than preferred pressure with pressure in cryogenic liquid storage tank 2
During 0.45MPa, valve V1, valve V2 and air intake valve V4 are opened, and valve V3 is closed, then open compressor 4 and extract its Low Temperature Liquid
Change gas evaporation gas, gas compression to high pressure is filled with gas cylinder.
2) when cryogenic liquid storage tank 2 is more than preferred pressure 0.45MPa because leaking thermic tank inner pressure, valve V2, air inlet
Valve V4 is opened, and valve V1, valve V3 are closed, then opens compressor and extract its liquefied gas at low temp boil-off gas, by gas compression
Gas cylinder is filled with to high pressure.
3) when cryogenic insulated cylinder 3 fills, valve V3, valve V2, air intake valve V4 are opened, and valve V1 is closed, and low temperature is exhausted
The liquefied gas at low temp boil-off gas of hot gas bottle 3 is partly into cryogenic liquid storage tank 2, is partly into compressor 4, opens compression
Machine 4 extracts its liquefied gas at low temp boil-off gas, and gas compression to high pressure is filled with gas cylinder.
The above embodiments are only the optimal technical scheme of the utility model, and are not construed as the limit for the utility model
System, the technical solution that the scope of protection of the utility model should be recorded with claim, including the technical solution that claim is recorded
The equivalents of middle technical characteristic are protection domain.Equivalent substitution i.e. within this range is improved, also in the utility model
Protection domain within.
Claims (3)
1. a kind of liquefied gas at low temp evaporation gas recycling system and compressor, it is characterised in that：Including cryogenic liquid tank lorry（1）、
Cryogenic liquid storage tank（2）, cryogenic insulated cylinder（3）, compressor（4）And gases at high pressure fill bus-bar（5）, cryogenic liquid
Tank car（1）Gas phase end pass through the first branch pipe（6）And valve V1 is connected to compressor inleting pipe road（9）On；Cryogenic liquid storage tank
（2）Gas phase end pass through the second branch pipe（7）And valve V2 is connected to compressor inleting pipe road（9）On；Cryogenic insulated cylinder（3）'s
Gas phase end passes through the 3rd branch pipe（8）And valve V3 is connected to compressor inleting pipe road（9）On；In compressor inleting pipe road（9）On
Boost gauge 20, air intake valve V4, safety valve V5 and exhaust gas pressure gage 21 are set, compressor is controlled with air intake valve V4（4）
Admission pressure；Compressor（4）Bosh is set（14）, bosh（14）Heat exchanger is inside installed（10）, Low Temperature Liquid
Change gas evaporation gas through over-heat-exchanger（10）With cooling water indirect heat exchange, the gas after re-heat passes through compressor（4）Level-one
Compression（11）, level-one cooler（12）, two-stage compression（13）, secondary coolers（15）, surge tank（18）Afterwards, by valve V7, row
Go out pipeline（19）Bus-bar is filled to gases at high pressure（5）.
2. a kind of liquefied gas at low temp evaporation gas recycling system according to claim 1 and compressor, it is characterised in that：Institute
State compressor（4）Cylinder inner wall（16,17）Communicated with atmospheric environment.
3. a kind of liquefied gas at low temp evaporation gas recycling system according to claim 1 and compressor, it is characterised in that：Institute
State compressor（4）Piston speed be less than 0.93m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721201805.8U CN207316460U (en) | 2017-09-19 | 2017-09-19 | Liquefied gas at low temp evaporation gas recycling system and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721201805.8U CN207316460U (en) | 2017-09-19 | 2017-09-19 | Liquefied gas at low temp evaporation gas recycling system and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316460U true CN207316460U (en) | 2018-05-04 |
Family
ID=62382995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721201805.8U Expired - Fee Related CN207316460U (en) | 2017-09-19 | 2017-09-19 | Liquefied gas at low temp evaporation gas recycling system and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316460U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778915A (en) * | 2019-11-27 | 2020-02-11 | 浙江海天气体有限公司 | Gas recovery device of low-temperature gas cylinder |
| CN111692525A (en) * | 2020-07-20 | 2020-09-22 | 郑志 | BOG (boil off gas) recovery system and BOG recovery method for LNG tank container |
-
2017
- 2017-09-19 CN CN201721201805.8U patent/CN207316460U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110778915A (en) * | 2019-11-27 | 2020-02-11 | 浙江海天气体有限公司 | Gas recovery device of low-temperature gas cylinder |
| CN111692525A (en) * | 2020-07-20 | 2020-09-22 | 郑志 | BOG (boil off gas) recovery system and BOG recovery method for LNG tank container |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107014151A (en) | A kind of device and method of liquefaction of hydrogen | |
| CN110748786B (en) | Industrial liquid hydrogen storage device based on argon, nitrogen and positive hydrogen three-level heat preservation | |
| CN207316460U (en) | Liquefied gas at low temp evaporation gas recycling system and compressor | |
| CA2581281A1 (en) | Method for compressing a natural gas flow | |
| CN104792114A (en) | BOG re-liquefaction process and re-liquefaction recovery system thereof | |
| CN206771874U (en) | A kind of device of liquefaction of hydrogen | |
| CN108799823A (en) | A kind of recycling of On Lng Leakage and boil-off gas retracting device | |
| CN109027660A (en) | Supercritical hydrogen storage method and application thereof | |
| CN105416009A (en) | Method for refrigeration recovery of liquefied gas cylinder of power equipment | |
| CN206176035U (en) | Carbon dioxide sends and splits ware and fill installation | |
| CN213178918U (en) | A equipment that is used for LNG receiving station and big jar flash distillation gas of transfer station to retrieve | |
| CN214249132U (en) | Buried liquid hydrogen storage type hydrogenation device | |
| CN109372603A (en) | A kind of electricity generation system and dynamical system | |
| CN107736435A (en) | Process system and process method for carrying out deep-freezing and quick-freezing of seafood by using air | |
| CN104807292A (en) | Device and method for comprehensively utilizing nitrogen gas emptying energy and liquid argon gasification cold energy | |
| CN204987650U (en) | BOG retrieves liquefaction LNG system device | |
| CN104763873A (en) | Low-temperature liquid storage tank cover subsystem and low-temperature liquid storage tank | |
| CN103759496A (en) | Small skid-mounted evaporation gas reliquefaction and recovery device for liquefied natural gas | |
| CN111219593A (en) | BOG recovery system of LNG power ship and working method thereof | |
| CN103754894B (en) | Method for recycling ammonia synthesis cold energy in synthetic ammonia system | |
| CN206310233U (en) | Liquefied natural gas storage tank BOG gas cold energy recycle systems | |
| CN205825584U (en) | A kind of intelligentized petroleum benzin conversion equipment | |
| CN108072235B (en) | Air separation system | |
| CN104329561B (en) | A kind of system of liquid nitrogen LNG Liquefied natural gas and method thereof | |
| CN205939928U (en) | Retrieve LNG tank wagon BOG's sled dress formula liquefying plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180504 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |