CN106642986A - Natural gas liquefaction device used for offshore platform - Google Patents
Natural gas liquefaction device used for offshore platform Download PDFInfo
- Publication number
- CN106642986A CN106642986A CN201611129689.3A CN201611129689A CN106642986A CN 106642986 A CN106642986 A CN 106642986A CN 201611129689 A CN201611129689 A CN 201611129689A CN 106642986 A CN106642986 A CN 106642986A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- heat exchanger
- gas
- liquid separator
- gas liquefaction
- 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
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000003345 natural gas Substances 0.000 title claims abstract description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 19
- 238000005057 refrigeration Methods 0.000 claims abstract description 15
- 239000007792 gaseous phase Substances 0.000 claims abstract description 6
- 239000007791 liquid phase Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 9
- 239000004215 Carbon black (E152) Substances 0.000 description 5
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 230000008859 change Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009471 action 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
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- F25J1/0203—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 single-component refrigerant [SCR] fluid in a closed vapor compression cycle
- F25J1/0204—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 single-component refrigerant [SCR] fluid in a closed vapor compression cycle as a single flow SCR 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
- F25J1/0243—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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention provides a natural gas liquefaction device used for an offshore platform. The natural gas liquefaction device comprises a heat exchange structure, a gas-liquid separator, a first collecting device and a second collecting device. The heat exchange structure comprises a nitrogen expansion refrigerating system and a heat exchanger. A first input tube, a second input tube, a first output tube and a second output tube are arranged on the heat exchanger. The first input tube is connected with a natural gas source. The first output tube is connected with the gas-liquid separator. The second input tube is connected with a gaseous phase outlet of the gas-liquid separator. The second output tube is connected with the first collecting device. The nitrogen expansion refrigerating system is connected with the heat exchanger. A liquid phase outlet of the gas-liquid separator is connected with the second collecting device. According to the natural gas liquefaction device, the refrigerating capacity is generated when high-safety nitrogen media is subjected to the cyclic process of compression, expansion and refrigeration; and the heat exchanger is a microporous heat exchanger, the size and weight are effectively controlled on the premise that heat exchange conditions of the heat exchanger are met, and therefore, the natural gas liquefaction device is compact in structure and small in occupied space.
Description
Technical field
The present invention relates to natural gas processing field, more particularly to a kind of natural gas liquefaction device for offshore platform.
Background technology
With continuous growth of the today's society to energy demand, offshore oil and gas field is developed into focus；And with right
The continuous enhancing of the environmental consciousness of air, the utilization and production as the natural gas of clean energy resource is more and more paid attention to.
Natural gas has obtained fast development as a kind of green energy resource.
The natural gas of offshore oil and gas field output typically can outer defeated ashore natural gas receiving terminal carry out natural gas purification and
Liquefaction is processed, and sea limit gas field, association gas field, deep-sea gas field less than normal for yield etc., with laying seafloor gas seepage
Method to convey these natural gases is clearly less economical.If will again pass through after natural gas at sea facility direct liquefaction
Shipping, this method has great advantage tool in economy.That is, the liquefying plant of offshore natural gas is arranged
At sea on platform.
The characteristics of having high cost investment and high environmental risk is exploited and produced to offshore oil and gas, thus makes building for offshore platform
If space is extremely limited, certain restriction is also generated to the weight that platform upper produces chunk, and the security to producing will
Ask very high.Therefore it is that those skilled in the art need to solve that rational natural gas liquefaction device how is at sea arranged on platform
Technical problem.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of simple structure, the compact natural gas for offshore platform
Liquefying plant, to overcome the defect in prior art.
In order to solve above-mentioned technical problem, the present invention is adopted the following technical scheme that：A kind of natural gas for offshore platform
Liquefying plant, including heat exchange structure, gas-liquid separator, the first collection device and the second collection device, the heat exchange structure includes
Nitrogen expansion refrigeration system and heat exchanger, the heat exchanger is provided with the first input pipe, the second input pipe, the first efferent duct and
Two efferent ducts, first input pipe is connected with natural air-air source, and the first efferent duct is connected with gas-liquid separator, the second input pipe
It is connected with the gaseous phase outlet of gas-liquid separator, the second efferent duct is connected with the first collection device, the nitrogen expansion refrigeration system
It is connected with the heat exchanger, the liquid-phase outlet of the gas-liquid separator is connected with the second collection device.
Preferably, first collection device is provided with choke valve.
Preferably, the heat exchanger is micropore heat exchanger.
Preferably, the nitrogen expansion refrigeration system includes decompressor.
As described above, a kind of natural gas liquefaction device for offshore platform of the present invention, has the advantages that：
The refrigerating capacity of the present invention is produced through compression-expansion refrigerative circle system by safe nitrogen medium, is got rid of
Abandon using the method with inflammable and explosive dangerous azeotrope medium circulation refrigeration；And nitrogen expansion refrigeration system phase
It is simple to flow process.The heat transmission equipment of the present invention is only with micropore heat exchanger, it is not necessary to other relevant devices or auxiliary equipment, full
On the premise of sufficient heat transfer boundary condition and heat exchange efficiency, the overall volume and weight of effective control.Therefore present configuration is compact, account for
Ground space is little, is especially suitable for the offshore platform application limited by space and weight.
Description of the drawings
Fig. 1 is the structure chart of the present invention.
In figure：1st, heat exchange structure 2, gas-liquid separator
3rd, the first collection device 4, the second collection device
11st, nitrogen expansion refrigeration system 12, heat exchanger
121st, the first input pipe 122, the second input pipe
123rd, the first efferent duct 124, the second efferent duct
31st, choke valve 111, decompressor
21st, gaseous phase outlet 22, liquid-phase outlet
5th, source of the gas
Specific embodiment
Structure, ratio, size depicted in Figure of description etc., only to coordinate the content disclosed in specification, with
Understand and read for those skilled in the art, be not limited to enforceable qualifications of the invention, therefore do not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated the present invention is not being affected
Under effect and the purpose to be reached, all should still fall in the range of disclosed technology contents to be covered.Meanwhile,
In this specification it is cited such as " on ", D score, "front", "rear", " centre " term, be merely convenient to describe understands, and
It is not used to limit enforceable scope of the invention, its relativeness is altered or modified, under without essence change technology contents, when
Also it is considered as enforceable category of the invention.
As shown in figure 1, a kind of natural gas liquefaction device for offshore platform of the present invention, it includes heat exchange structure 1, gas-liquid
Separator 2, the first collection device 3 and the second collection device 4.The heat exchange structure 1 includes nitrogen expansion refrigeration system 11 and changes
Hot device 12, the heat exchanger 12 is provided with the first input pipe 121, the second input pipe 122, the first efferent duct 123 and the second output
Pipe 124, first input pipe 121 is connected with natural air-air source, and the first efferent duct 123 is connected with gas-liquid separator 2, and second is defeated
Enter pipe 122 to be connected with the gaseous phase outlet 21 of gas-liquid separator 2, the second efferent duct 124 is connected with the first collection device 3, the nitrogen
Gas expansion refrigeration system 11 is connected with the heat exchanger 12, and the liquid-phase outlet 22 and second of the gas-liquid separator 2 collects dress
Put 4 connections.
Contain Multiple components, mainly heavy hydrocarbon and methane in natural gas.
The present invention action principle be：When the natural gas in source of the gas 5 is entered in heat exchanger 12 by the first input pipe 121
When, natural gas is condensed for the first time, natural gas partial liquefaction, and the part of liquefaction is heavy hydrocarbon, and the part without liquefaction is methane；Jing
After crossing liquefaction for the first time, heavy hydrocarbon and methane are discharged into gas-liquid separator 2 from the first efferent duct 123 simultaneously, in gas-liquid separator 2
In, heavy hydrocarbon is discharged into the second collection device 4 from liquid-phase outlet 22, and methane is discharged from gaseous phase outlet 21 and by the second input pipe
122 are re-introduced into being condensed in heat exchanger 12；Methane is liquefied through time condensation and is entered into by the second efferent duct 124
In first collection device 3.In the present embodiment, in order to describe conveniently, described heavy hydrocarbon and methane is and refers to concept, and not
To say only have in natural gas both materials, this be it should be clear to a person skilled in the art that general knowledge, so do not do excessive statement,
Liquid methane described here just refers to last liquefied natural gas.
In the present embodiment, first collection device 3 is provided with choke valve 31, in order to effective control liquefied natural gas
Pressure store.
Heat exchanger 12 described in the present embodiment is micropore heat exchanger.Through verification experimental verification, the volume and weight of micropore heat exchanger
Amount is well positioned to meet job requirement, while ensureing the liquefaction efficiency to natural gas, does not use other relevant devices.
Nitrogen expansion refrigeration system described in the present embodiment 11 includes decompressor 111, and nitrogen is laggard through expander
Enter in heat exchanger 12 and natural gas is condensed.I.e. as shown in figure 1, during condensing heat-exchange, nitrogen expansion refrigeration system
Nitrogen in 11 is entered in heat exchanger 12 after the expansion of decompressor 111, is backed within again after being exchanged heat with natural gas
Nitrogen expansion refrigeration system 11 is circulated and uses.And the natural gas flow knowable to the direction of arrow in Fig. 1, in heat exchanger 12
Flow with nitrogen in opposite direction in direction, it is ensured that heat exchange efficiency.
In sum, a kind of natural gas liquefaction device for offshore platform of the present invention, simple structure, compact, Neng Gouyou
Imitated carries out liquefaction collection to natural gas.So, the present invention effectively overcomes some practical problems of the prior art so as to have
Very high value and use meaning.
The principle and its effect of the above-mentioned embodiment only illustrative present invention, it is of the invention not for limiting.This
It is bright to also have many aspects to be improved on the premise of without prejudice to overall thought, for those skilled in the art all can be
Without prejudice under the spirit and the scope of the present invention, modifications and changes can be carried out to above-described embodiment.Therefore, art such as
All equivalent modifications that middle tool usually intellectual is completed under without departing from disclosed spirit and technological thought or
Change, should be covered by the claim of the present invention.
Claims (4)
1. a kind of natural gas liquefaction device for offshore platform, it is characterised in that：Including heat exchange structure (1), gas-liquid separator
(2), the first collection device (3) and the second collection device (4), the heat exchange structure (1) is including nitrogen expansion refrigeration system (11)
With heat exchanger (12), the heat exchanger (12) is provided with the first input pipe (121), the second input pipe (122), the first efferent duct
(123) and the second efferent duct (124), first input pipe (121) is connected with natural air-air source, the first efferent duct (123) with
Gas-liquid separator (2) connects, and the second input pipe (122) is connected with the gaseous phase outlet (21) of gas-liquid separator (2), the second efferent duct
(124) it is connected with the first collection device (3), the nitrogen expansion refrigeration system (11) is connected with the heat exchanger (12), institute
The liquid-phase outlet (22) for stating gas-liquid separator (2) is connected with the second collection device (4).
2. a kind of natural gas liquefaction device for offshore platform according to claim 1, it is characterised in that：Described first
Collection device (3) is provided with choke valve (31).
3. a kind of natural gas liquefaction device for offshore platform according to claim 1, it is characterised in that：The heat exchange
Device (12) is micropore heat exchanger.
4. a kind of natural gas liquefaction device for offshore platform according to claim 1, it is characterised in that：The nitrogen
Expansion refrigeration system (11) includes decompressor (111).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748751 | 2016-07-15 | ||
| CN2016207487516 | 2016-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106642986A true CN106642986A (en) | 2017-05-10 |
Family
ID=58825469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611129689.3A Pending CN106642986A (en) | 2016-07-15 | 2016-12-09 | Natural gas liquefaction device used for offshore platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106642986A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202030720U (en) * | 2011-01-20 | 2011-11-09 | 中国海洋石油总公司 | Offshore natural gas liquefaction device |
| CN102636000A (en) * | 2012-03-13 | 2012-08-15 | 新地能源工程技术有限公司 | Method for refrigerating liquefied natural gas by aid of single mixed working medium and device |
| CN103215093A (en) * | 2013-03-14 | 2013-07-24 | 上海交通大学 | Miniature skid type nitrogen expansion natural gas liquefaction system and method thereof |
| US20130192297A1 (en) * | 2010-07-29 | 2013-08-01 | John Mak | Configurations and methods for small scale lng production |
| CN104930815A (en) * | 2015-06-16 | 2015-09-23 | 上海交通大学 | Marine natural gas liquefaction and NGL recycling system and application |
| CN105698487A (en) * | 2016-03-17 | 2016-06-22 | 杨晓东 | Mixed refrigerant internal circulation method, and natural gas liquefying method and device |
-
2016
- 2016-12-09 CN CN201611129689.3A patent/CN106642986A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130192297A1 (en) * | 2010-07-29 | 2013-08-01 | John Mak | Configurations and methods for small scale lng production |
| CN202030720U (en) * | 2011-01-20 | 2011-11-09 | 中国海洋石油总公司 | Offshore natural gas liquefaction device |
| CN102636000A (en) * | 2012-03-13 | 2012-08-15 | 新地能源工程技术有限公司 | Method for refrigerating liquefied natural gas by aid of single mixed working medium and device |
| CN103215093A (en) * | 2013-03-14 | 2013-07-24 | 上海交通大学 | Miniature skid type nitrogen expansion natural gas liquefaction system and method thereof |
| CN104930815A (en) * | 2015-06-16 | 2015-09-23 | 上海交通大学 | Marine natural gas liquefaction and NGL recycling system and application |
| CN105698487A (en) * | 2016-03-17 | 2016-06-22 | 杨晓东 | Mixed refrigerant internal circulation method, and natural gas liquefying method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Mortazavi et al. | Enhancement of APCI cycle efficiency with absorption chillers | |
| CN101852504B (en) | Double-stage cascade refrigeration method used for oil-gas recovery | |
| RU2716099C1 (en) | Modular device for separation of spg and heat exchanger of flash gas | |
| CN103363778B (en) | Minitype skid-mounted single-level mixed refrigerant natural gas liquefaction system and method thereof | |
| CN105536282B (en) | A kind of oil-gas recovery method for being pressurized multi-stage condensing | |
| WO2019118578A1 (en) | Process integration for natural gas liquid recovery | |
| CN104857810B (en) | Gas condensation process and equipment | |
| CN104930815A (en) | Marine natural gas liquefaction and NGL recycling system and application | |
| CN104864734A (en) | Condenser and condensation method | |
| CN205607020U (en) | System for separation chemical engineering exhaust gas system ethylene | |
| CN203224100U (en) | Air separation apparatus for oxygen and nitrogen isobaric-separation and preparation | |
| CN104046400A (en) | Method and device for removing hydrocarbon and water by using pressure difference of inlet and outlet of pipeline | |
| CN203131427U (en) | Skid-mounted liquefied natural gas device | |
| CN106642986A (en) | Natural gas liquefaction device used for offshore platform | |
| CN108775770A (en) | A kind of brazing plate type heat exchanger natural gas liquefaction system using mixed-refrigerant cycle | |
| CN203048901U (en) | Low-cost and low-energy natural gas recovering and processing device | |
| CN202016987U (en) | Light hydrocarbon recovery unit | |
| CN212476630U (en) | Liquefaction unit in vehicle-mounted movable oilfield emptying gas recovery system | |
| CN104877724A (en) | Treatment method for recovering vent natural gas | |
| CN205718206U (en) | Utilize the system of carbon black tail gas preparing liquefied natural gas | |
| CN206803597U (en) | Gas in natural gas recovery system | |
| CN106839650A (en) | Gas in natural gas recovery system and technique | |
| CN107626185A (en) | A kind of carbon capture system suitable for supercritical carbon dioxide coal fired power plant | |
| US20160208461A1 (en) | Harvesting atmospheric water using natural gas that would typically be flared and wasted | |
| CN205700022U (en) | A kind of oil carrier rocks the processing means of cargo tank effusion oil gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
|
| RJ01 | Rejection of invention patent application after publication |