CN207815831U - A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas - Google Patents
A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas Download PDFInfo
- Publication number
- CN207815831U CN207815831U CN201820124247.8U CN201820124247U CN207815831U CN 207815831 U CN207815831 U CN 207815831U CN 201820124247 U CN201820124247 U CN 201820124247U CN 207815831 U CN207815831 U CN 207815831U
- Authority
- CN
- China
- Prior art keywords
- nitrogen
- cold energy
- natural gas
- rectifying column
- argon
- 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.)
- Withdrawn - After Issue
Links
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 48
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 47
- OLBVUFHMDRJKTK-UHFFFAOYSA-N [N].[O] Chemical compound [N].[O] OLBVUFHMDRJKTK-UHFFFAOYSA-N 0.000 title claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 169
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 84
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000011084 recovery Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005380 natural gas recovery Methods 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 239000003507 refrigerant Substances 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 6
- 238000010926 purge Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 30
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 238000004887 air purification Methods 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 2
- QJGQUHMNIGDVPM-OUBTZVSYSA-N nitrogen-15 Chemical compound [15N] QJGQUHMNIGDVPM-OUBTZVSYSA-N 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004172 nitrogen cycle Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012264 purified product Substances 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas, which includes liquified natural gas tank, cold energy of liquefied natural gas recovery system, raw argon column, purity nitrogen rectifying column, pure oxygen rectifying column, air cleaning system and dirty nitrogen cold energy recovery system；Pressurize after the refrigerant heat exchange of liquefied natural gas and cold energy of liquefied natural gas recovery system it is outer it is defeated for users to use, cold energy of liquefied natural gas recovery system connect to form refrigerant circulation circuit by pipeline with purity nitrogen rectifying column；Feed back loop is formed between purity nitrogen rectifying column and pure oxygen rectifying column, the bottom of tower of purity nitrogen rectifying column is connected to raw argon column simultaneously；Argon gas is formed between raw argon column and pure oxygen rectifying column and purifies circuit, and air cleaning system forms purging air circuit with dirty nitrogen cold energy recovery system, and dirty nitrogen cold energy recovery system forms dirty nitrogen cold energy recycling circuit with pure oxygen rectifying column and raw argon column.The utility model can realize that space division gas products specific energy consumption reduces by 20% or more.
Description
Technical field
The utility model is related to a kind of air-seperation systems, and in particular to a kind of cold energy using liquefied natural gas is to air
In the system that is detached of oxygen, nitrogen and argon gas.
Background technology
Air separation be by air oxygen and nitrogen carry out separating-purifying storage after carry out subsequent commercial Application.It is empty
Main component in gas is oxygen and nitrogen, and the boiling point of the two is different；The technological process of air separation is first compressed air, in advance
Cold, purification is cooled further to Celsius subzero 100 more and spends, make liquid air, then utilizes the boiling-point difference of oxygen and nitrogen,
Liquid air repeatedly evaporate and condense through rectifying column, makes oxygen and nitrogen separation, liquid oxygen and the liquid nitrogen production purified
Product.
Air-seperation system needs a large amount of cryogenic cold energy, conventional liq space division generally use supercharging air cycle or nitrogen
Pressurization cycle is reconfigured two high temperature, low-temperature turbine boosting expansion machine refrigeration provides institute's chilling requirement for air separation unit.Therefore, often
The low temperature environment for advising air-seperation system is generated by the mechanical refrigeration of electric drive completely, its general power cost accounts for being produced into
This 70% or so, while also to consume a large amount of cooling water.
Air-separating technology flow using cold energy of liquefied natural gas is that cold is passed to air segregative line by refrigerant
Air cooling unit, the air rectification cell of system cancel the circulating nitrogen gas swell refrigeration unit in traditional space division technique.With tradition
Air-seperation system is compared, and the compression energy consumption for cooling of air separation unit, base can be greatly lowered using the cold of liquefied natural gas
Originally cooling water is not needed, while liquefied natural gas gasifying expense can also be reduced.Cold energy of liquefied natural gas space division technique can
The cold of LNG cold position is made full use of, energy producing level can be used high, energy-saving advantage is notable.
Currently, it is conventional using cold energy of liquefied natural gas space division technique technology for cold energy of liquefied natural gas utilization rate less than
40%, just with shallow cold part, the deep cooling part for being worth bigger does not recycle.
Utility model content
In view of this, the utility model provides a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas, system
Two technique units of conventional air swell refrigeration and cryogenic separation are completely separable, it is independently arranged, thoroughly eliminates the phase between the two
Mutually interference, the respective technical process of re-optimization obtain largest device efficiency.
A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas, the system include liquified natural gas tank, liquefaction day
Right gas cold energy recovery system, argon tank, raw argon column, liquid nitrogen container, purity nitrogen rectifying column, pure oxygen rectifying column, liquid oxygen tank, air purification
System and dirty nitrogen cold energy recovery system；
Liquified natural gas tank leads to cold energy of liquefied natural gas recovery system, liquefied natural gas and liquefied natural gas by pipeline
Pressurize after the refrigerant heat exchange of cold energy recovery system it is outer it is defeated for users to use, cold energy of liquefied natural gas recovery system by pipeline with it is pure
Nitrogen rectifying column connects to form refrigerant circulation circuit, and purity nitrogen rectifying column is connected to by pipeline with liquid nitrogen container；The bottom of tower of purity nitrogen rectifying column
It is connected to form feed back loop with the bottom of tower of pure oxygen rectifying column and tower top respectively with tower top, the bottom of tower of purity nitrogen rectifying column while and crude argon
Rectifying column is connected to form liquid nitrogen cooling circuit；Argon gas is formed between raw argon column and pure oxygen rectifying column purifies circuit, pure oxygen essence
It evaporates tower while being connected to liquid oxygen tank, air cleaning system communicates to form purging air circuit with dirty nitrogen cold energy recovery system, dirty nitrogen cold energy
Recovery system forms dirty nitrogen cold energy recycling circuit with pure oxygen rectifying column and raw argon column.
Further, the cold energy of liquefied natural gas recovery system is using in low-temperature circulating working medium recycling liquified natural gas tank
The cryogenic cold energies discharged during liquid phase liquefied natural gas gasifying to 28~35 DEG C of room temperature, and by the cold energy in specific operating mode
It is passed in piece-rate system from purity nitrogen rectifying tower top heat exchanger under (pressure of 0.4MPa).
Further, the dirty nitrogen cold energy recovery system isolates pure oxygen rectifying column tower top containing a small amount of (1~2%) liquid
After the dirty nitrogen part of oxygen is pre-chilled by dirty nitrogen cold energy recovery system to raw air, it is discharged into environment after dirty nitrogen regeneration.
Further, the pure oxygen rectifying column detaches oxygen in raw air, reaches purity requirement (99.99%)
The dirty nitrogen of liquid oxygen product and higher degree (98%~99%), liquid oxygen product enter liquid oxygen storage tank as product store, dirty nitrogen into
Enter purity nitrogen rectifying column further to detach.
Further, the purity nitrogen rectifying column further detaches the dirty nitrogen that pure oxygen rectifying column generates, and tower top generation reaches
The liquid nitrogen product of purity requirement (99.999%) enters liquid nitrogen storage tank and is stored as product.Reflux dirty nitrogen in bottom of tower is with cold energy
It returns to pure oxygen rectifying column to continue to detach, while the cold energy of liquefied natural gas is brought into inside pure oxygen rectifying column.
Further, the air cleaning system pre-processes raw air, removes impurity, makes to enter distillation system
Air material composition be nitrogen, oxygen, argon gas and other trace amount of foreign gas.
Further, pure oxygen rectifier bottoms are contained liquid argon by the raw argon column and liquid oxygen enters crude argon rectifying
Tower, tower top isolate the liquid argon product of high-purity (92%~98%), and bottom of tower high-purity liquid oxygen (94%~96%) product returns
Enter liquid oxygen storage tank after liquid oxygen rectifying column.
Advantageous effect：
1, the system optimization of the utility model, independent cooling strengthen low-temperature heat exchange rectifying, space division gas products unit
Energy consumption reduces by 20% or more, i.e., by our times advanced level 0.42KWh/m3(O2) it is down to 0.3KWh/m3(O2) below.
2, the operating pressure of the utility model can be developed to 1-1.2MPa from ultralow pressure 0.35MPa to high pressure；
3, liquefied natural gas normal pressure (- 162 DEG C of low temperature) gasifies in Tthe utility model system, it is ensured that whole gasification latent heats are lossless
It loses.
4, the utility model chooses best refrigeration working medium and replaces existing nitrogen cycle refrigeration system, by cold contained by LNG by-
162 DEG C are down to -196 DEG C, make liquefaction of nitrogen, it is ensured that the cold energy of liquefied natural gas rate of recovery reaches 90% or more.
5, the system of the utility model mends cold fast, short, the elastic big, flexible adjustment of startup；System cancels turbo-expander, behaviour
Make more stable reliable.
6, the utility model uses completely new low-temperature distillation process and equipment, the single rectification column fed using two-phase, it is ensured that
It detaches efficient, energy-saving；System footprint substantially reduces, and construction investment is reduced by 30% or more and (advised with same liquid production
Mould meter), system green recycles, low-carbon environment-friendly, and energy-saving effect is notable.
7, the product scheme design of the utility model is flexible, need to only adjust the technological parameter of heat exchange rectifying and can meet production
It is required that.
Description of the drawings
Fig. 1 is the system composition and fundamental diagram of the utility model.
Specific implementation mode
With reference to the accompanying drawings and examples, the utility model is described in detail.
As shown in Fig. 1, the utility model provides a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas, should
System includes liquified natural gas tank, cold energy of liquefied natural gas recovery system, argon tank, raw argon column, liquid nitrogen container, purity nitrogen rectifying
Tower, pure oxygen rectifying column, liquid oxygen tank, air cleaning system and dirty nitrogen cold energy recovery system；
Liquefied natural gas enters cold energy recovery system, the liquid in cold energy of liquefied natural gas recovery system from natural gas tank output
Change natural gas gasifying, cold energy is passed into the gaseous coolant in cold energy of liquefied natural gas recovery system, gaseous coolant 4 is become by gaseous state
For liquid 3；Natural gas 2 after exchanging heat with refrigerant is outer defeated after pressurizeing, for users to use.Liquid refrigerants 3 enters purity nitrogen rectifying column, will
The gaseous nitrogen of purity nitrogen rectifying column tower top is cooled to liquid nitrogen 9, and the gasification of liquid refrigerants 4 is that gaseous coolant 4 returns to cold energy of liquefied natural gas
Recovery system continues to store cold energy of liquefied natural gas, and liquid nitrogen 9 after cooling is stored in liquid nitrogen container.The charging of purity nitrogen rectifying column is
Dirty nitrogen 5 from pure oxygen rectifying column tower top.
Purity nitrogen rectifying column tower bottom distillate is oxygen nitrogen mixing liquid 6, and part nitrogen oxygen mixing liquid 8 enters pure oxygen essence as charging
Tower is evaporated, another part nitrogen oxygen mixing liquid 7 enters raw argon column as low-temperature receiver.The oxygen extracted from pure oxygen rectifying column middle and lower part
Charging of the argon mixture gas 12 as raw argon column, raw argon column tower top are isolated the higher gas argon of purity 14 and are stored up into argon
Tank, bottom of tower are that the higher oxygen argon mixture gas of oxygen content 13 is back in pure oxygen rectifying column.
Air 20 is purified by air cleaning system, and purified air 18 enters dirty nitrogen cold energy recovery system 2 and returns
The cold that the dirty nitrogen 15 after cold is provided from pure oxygen rectifying tower top part dirt nitrogen 10 and for raw argon column is received, it is after cooling
Cold air 16 enters pure oxygen rectifying column as charging.It isolates liquid oxygen 11 and stores up into liquid oxygen tank, tower top separation in pure oxygen rectifying tower bottom
Charging of the part dirt nitrogen 5 gone out as purity nitrogen rectifying column, another part dirt nitrogen 10 is by dirty nitrogen cold energy recovery system and dirty nitrogen 15
Enter air cleaning system after mixing, as the regeneration purge gas 17 of air cleaning system, by the dirty nitrogen of air cleaning system
19 are discharged into air.
In conclusion the above is only the preferred embodiments of the present utility model only, it is not intended to limit the utility model
Protection domain.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all wrap
Containing being within the protection scope of the utility model.
Claims (6)
1. a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas, which includes liquified natural gas tank, liquefies naturally
Gas cold energy recovery system, argon tank, raw argon column, liquid nitrogen container, purity nitrogen rectifying column, pure oxygen rectifying column, liquid oxygen tank, air purification system
System and dirty nitrogen cold energy recovery system；
Liquified natural gas tank leads to cold energy of liquefied natural gas recovery system, liquefied natural gas and cold energy of liquefied natural gas by pipeline
Pressurize after the refrigerant heat exchange of recovery system it is outer it is defeated for users to use, cold energy of liquefied natural gas recovery system passes through pipeline and purity nitrogen essence
It evaporates tower to connect to form refrigerant circulation circuit, purity nitrogen rectifying column is connected to by pipeline with liquid nitrogen container；The bottom of tower of purity nitrogen rectifying column and tower
Top is connected to form feed back loop with the bottom of tower of pure oxygen rectifying column and tower top respectively, the bottom of tower of purity nitrogen rectifying column simultaneously with crude argon rectifying
Tower is connected to form liquid nitrogen cooling circuit；Argon gas is formed between raw argon column and pure oxygen rectifying column purifies circuit, pure oxygen rectifying column
It is connected to liquid oxygen tank simultaneously, air cleaning system communicates to form purging air circuit with dirty nitrogen cold energy recovery system, dirty nitrogen cold energy recycling
System forms dirty nitrogen cold energy recycling circuit with pure oxygen rectifying column and raw argon column.
2. a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas as described in claim 1, which is characterized in that described
Cold energy of liquefied natural gas recovery system is arrived using liquid phase liquefied natural gas gasifying in low-temperature circulating working medium recycling liquified natural gas tank
The cryogenic cold energy discharged during 28~35 DEG C, and the cold energy is passed under the pressure of 0.4MPa from purity nitrogen rectifying tower top heat exchanger
Enter in piece-rate system.
3. a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas as claimed in claim 1 or 2, which is characterized in that
It is cold by dirty nitrogen that pure oxygen rectifying column tower top is isolated the dirty nitrogen part containing 1~2% liquid oxygen by the dirt nitrogen cold energy recovery system
After energy recovery system is pre-chilled to raw air, it is discharged into environment after dirty nitrogen regeneration.
4. a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas as claimed in claim 3, which is characterized in that described
Pure oxygen rectifying column detaches oxygen in raw air, obtain liquid oxygen product that purity is 99.99% and purity be 98%~
99% dirty nitrogen, liquid oxygen product enter liquid oxygen storage tank and store as product, and dirty nitrogen enters purity nitrogen rectifying column and further detaches.
5. a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas as claimed in claim 4, which is characterized in that described
Purity nitrogen rectifying column further detaches the dirty nitrogen that pure oxygen rectifying column generates, and tower top generates the liquid nitrogen production for reaching that purity is 99.999%
Product enter liquid nitrogen storage tank and are stored as product；Reflux dirty nitrogen in bottom of tower returns to pure oxygen rectifying column with cold energy to be continued to detach, together
When the cold energy of liquefied natural gas is brought into inside pure oxygen rectifying column.
6. a kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas as claimed in claim 5, which is characterized in that described
Pure oxygen rectifier bottoms are contained liquid argon to raw argon column and liquid oxygen enters raw argon column, and it is 92% that tower top, which isolates purity,
~98% liquid argon product, bottom of tower purity are to enter liquid oxygen storage tank after 94%~96% liquid oxygen product returns to liquid oxygen rectifying column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124247.8U CN207815831U (en) | 2018-01-24 | 2018-01-24 | A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820124247.8U CN207815831U (en) | 2018-01-24 | 2018-01-24 | A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207815831U true CN207815831U (en) | 2018-09-04 |
Family
ID=63325284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820124247.8U Withdrawn - After Issue CN207815831U (en) | 2018-01-24 | 2018-01-24 | A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207815831U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224900A (en) * | 2018-01-24 | 2018-06-29 | 北京拓首能源科技股份有限公司 | A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas |
-
2018
- 2018-01-24 CN CN201820124247.8U patent/CN207815831U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224900A (en) * | 2018-01-24 | 2018-06-29 | 北京拓首能源科技股份有限公司 | A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas |
| CN108224900B (en) * | 2018-01-24 | 2024-01-09 | 北京拓首能源科技股份有限公司 | Oxygen-nitrogen-argon separation system utilizing liquefied natural gas cold energy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100363699C (en) | Air separation system for recycling cold energy of liquified natural gas | |
| CN102374754B (en) | The Apparatus and method for of liquified natural gas and carbon monoxide is produced from coke-stove gas | |
| CN105865149A (en) | Method for producing liquid air by utilizing liquefied natural gas cold energy | |
| CN101688753B (en) | Method and device for separating mixture of hydrogen, methane and carbon monoxide by cryogenic distillation | |
| CN104019628B (en) | Make the method that space division system runs continuously during the supply discontinuity of LNG cold energy | |
| CN103175381B (en) | Low concentration coal-bed gas produces LNG technique containing oxygen cryogenic liquefying | |
| CN104154416B (en) | A kind of ice-reserving method and device of utilizing cold energy of liquefied natural gas with atmospheric tower | |
| CN101571340A (en) | Air separation method utilizing liquefied natural gas cold energy | |
| CN108224900A (en) | A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas | |
| CN107144145B (en) | Trapping magnesite melting fume afterheat and CO are recycled using LNG cold energy2System and method | |
| CN107940893A (en) | Using the LNG cold energy stepped utilization methods of cold energy lighter hydrocarbons recovery | |
| CN108266965A (en) | A kind of oxygen nitrogen piece-rate system using cold energy of liquefied natural gas | |
| CN101899342B (en) | Process for producing liquefied natural gas by coal bed gas in mine coal | |
| CN201532078U (en) | Air separating system using liquefied natural gas cold energy | |
| CN102435045A (en) | Liquid nitrogen washing purified synthetic gas and device for cryogenically separating and recovering LNG (liquefied natural gas) thereof | |
| CN207815831U (en) | A kind of oxygen nitrogen and argon piece-rate system using cold energy of liquefied natural gas | |
| CN108240733A (en) | A kind of air-seperation system using cold energy of liquefied natural gas | |
| CN103175380B (en) | Low concentration coal-bed gas produces LNG device containing oxygen cryogenic liquefying | |
| CN208091061U (en) | A kind of oxygen nitrogen piece-rate system using cold energy of liquefied natural gas | |
| CN208567309U (en) | A kind of air-seperation system using cold energy of liquefied natural gas | |
| CN101818984B (en) | Full liquefying separation process for air-containing coal bed gas | |
| CN109721054A (en) | The production method and device of scale electronic grade high-purity carbon dioxide | |
| CN110017628A (en) | A kind of LNG cold energy use system and method based on argon circulation | |
| CN202382518U (en) | Device for washing and purifying synthesis gas with liquid nitrogen and cryogenically separating and recovering LNG (liquefied natural gas) | |
| CN203928597U (en) | A kind of LNG cold energy intercourse maintains the air-seperation system of continuous operation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180904 Effective date of abandoning: 20240109 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180904 Effective date of abandoning: 20240109 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |