CN208416502U - A kind of well head natural gas liquefaction recovery system - Google Patents
A kind of well head natural gas liquefaction recovery system Download PDFInfo
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- CN208416502U CN208416502U CN201820936633.7U CN201820936633U CN208416502U CN 208416502 U CN208416502 U CN 208416502U CN 201820936633 U CN201820936633 U CN 201820936633U CN 208416502 U CN208416502 U CN 208416502U
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Abstract
The utility model relates to a kind of well head natural gas liquefaction recovery systems, including sequentially connected metering supercharging device, pretreatment unit, ice chest and LNG storage tank, further include the compressor unit being connected with ice chest；Measuring supercharging device includes sequentially connected buffer metering device and supercharging device, and pretreatment unit includes dehydration device and the deacidifying device being connected respectively with dehydration device, regenerating molecular sieve device and mercury removal device；Supercharging device, deacidifying device, dehydration device, mercury removal device and ice chest are sequentially connected with.The utility model scientific structure design is reasonable; it can be used for skid-mounted type to recycle on the spot; realize the liquefaction recycling of small-sized well head natural gas resource; realize the recycling of the small tolerance associated gas of individual well and the outlying district oil gas field associated gas without pipe network; effect is obvious in terms of economizing on resources and protecting environment, can meet the needs of practical application well.
Description
Technical field
The utility model belongs to exploitation of oil-gas field equipment technical field, and in particular to a kind of well head natural gas liquefaction recycling system
System.
Background technique
Well head natural gas is concentrated mainly on border area, outlying individual well, also there is the initial stage of development in oil gas field new district, as facing
When Productivity Construction.These bleed pressures are small and yield is small, and most of component includes ethane, propane, butane, penta based on methane
The gases such as the hydro carbons such as alkane and a small amount of nitrogen, carbon dioxide, hydrogen sulfide, helium, oxygen, hydrogen.
China is developing country, makes full use of and recycle the above small-sized well head natural gas resource to China's economy and society
Development and environmental protection, have very important meaning.In above-described border area, outlying oil field, most of landform compare
Complexity, natural gas line be laid with it is difficult, can not gross radiation and the reasons such as less economical, cause caused by well head it is natural
Gas mostly uses greatly emptying to burn, according to incompletely statistics, annual to burn up about 1,000,000,000 sides, is equivalent to 1,000,000 tons of petroleum, and with interior
The further opening in land oil field, more and more such natural gas resources will be wasted.As country is to energy extraction process institute
Caused by environmental pollution and the increasing of energy waste improvement and rectification dynamics, rationally recycling this class natural gas has been when business
It is anxious, it also will be an inexorable trend of the long-term sustainable development of the domestic energy.
Due to environmental crisis and greenhouse effects, the residual well of oil gas, recycling coal bed gas, garbage loading embeading, which produce gas, has important reality meaning
Justice.These bleed pressures are small and yield is small, need simple at low cost, structure, ease of assembly and maintenance, the skid-mounted type convenient for dispatching
Recovery technology on the spot.Existing natural gas liquefaction recyclable device mostly uses tandem type, swell refrigeration, multi-stage refrigerating technique, mostly
Number is bulky, and cost of investment is relatively high, therefore is not suitable for the small tolerance associated gas of individual well, and the oil of the outlying district without pipe network
The recycling of gas field associated gas.
Utility model content
For above-mentioned problems of the prior art, the purpose of this utility model is to provide one kind can avoid in appearance
State the well head natural gas liquefaction recovery system of technological deficiency.
In order to realize above-mentioned purpose of utility model, the technical scheme that the utility model is provided is as follows:
A kind of well head natural gas liquefaction recovery system, including sequentially connected metering supercharging device, pretreatment unit, ice chest
And LNG storage tank, it further include the compressor unit being connected with ice chest；Metering supercharging device includes sequentially connected buffering metering dress
It sets and supercharging device, pretreatment unit includes dehydration device and the deacidifying device being connected respectively with dehydration device, molecular sieve
Regenerating unit and mercury removal device；Supercharging device, deacidifying device, dehydration device, mercury removal device and ice chest are sequentially connected with.
Further, buffer metering device is made of the feed gas separator and filter interconnected.
Further, filter is basket filter.
Further, supercharging device is the supercharger of a P1.2-3.5Mpa, shaft power 65kW or more.
Further, deacidifying device includes sequentially connected active carbon filter, dirt filter, amine absorption tower, amine regenerator
And amine liquid pump, amine liquid cooler, amine liquid heat exchanger and horizontal tubular sheet heat exchanger.
Further, dehydration device is made of the dehydrating tower and dirt filter interconnected
Further, regenerating molecular sieve device includes sequentially connected regeneration air preheater and heater, hot recycling separation
Device.
Further, contain sulfur loading active carbon in mercury removal device.
Further, ice chest is plate-fin heat exchanger.
Further, it is connected on the pipeline between ice chest and LNG storage tank and is provided with throttle valve.
Well head natural gas liquefaction recovery system provided by the utility model, scientific structure design is reasonable, at low cost, volume
Small, structure is simple, ease of assembly and maintenance, convenient for dispatching, can be used for skid-mounted type and recycle on the spot, realize small-sized well head natural gas
The liquefaction of resource is recycled, and the recycling benefit of the small tolerance associated gas of individual well and the outlying district oil gas field associated gas without pipe network is realized
With effect is obvious in terms of economizing on resources and protecting environment, can meet the needs of practical application well.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
In figure, it is de- that 1- measures supercharging device, 1.1- buffer metering device, 1.2- supercharging device, 2- pretreatment unit, 2.1-
Sour device, 2.2- dehydration device, 2.3- regenerating molecular sieve device, 2.4- mercury removal device, 3- ice chest, 4- compressor unit, 5- section
Flow valve, 6-LNG storage tank.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
Embodiment is described further the utility model.It should be appreciated that specific embodiment described herein is only to explain this reality
With novel, it is not used to limit the utility model.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.
As shown in Figure 1, a kind of well head natural gas liquefaction recovery system, including sequentially connected metering supercharging device 1, pre- place
Device 2, ice chest 3 and LNG storage tank 6 are managed, further includes the compressor unit 4 being connected with ice chest 3；It is connected to ice chest 3 and LNG storage tank
Throttle valve 5 is provided on pipeline between 6；Wherein, metering supercharging device 1 includes sequentially connected 1.1 He of buffer metering device
Supercharging device 1.2, pretreatment unit 2 include dehydration device 2.2 and the deacidifying device being connected respectively with dehydration device 2.2
2.1, regenerating molecular sieve device 2.3 and mercury removal device 2.4；The outlet of supercharging device 1.2 is connected to deacidifying device 2.1, demercuration dress
It sets 2.4 to be connected with ice chest 3, supercharging device 1.2, deacidifying device 2.1, dehydration device 2.2, mercury removal device 2.4 and ice chest 3 are sequentially
Connection.
Buffer metering device 1.1 is mainly made of the feed gas separator and basket filter that interconnect, separator
There are buffering and function of measuring, basket filter filtering accuracy is 300 mesh, and basket filter outlet is connected to deacidifying device 2.1.
Supercharging device 1.2 is the supercharger of a P1.2-3.5Mpa, shaft power 65kW or more；
Deacidifying device 2.1 mainly includes dirt filter, the BX filler of sequentially connected active carbon filter, precision for 5 microns
Amine absorption tower, amine regenerator and amine liquid pump, shell-and-tube amine liquid cooler, amine liquid heat exchanger and horizontal tubular sheet heat exchanger etc.；It is de-
Sour device 2.1 is used to carry out carbon dioxide removal and depriving hydrogen sulphide to gas and other sulfide operate, and deacidifying device 2.1 is using warm
Alkali is by the CO in gas2It is removed to 50ppm.
Dehydration device 2.2 is made of the dehydrating tower and dirt filter interconnected；Dehydration device 2.2 uses molecular sieve by gas
In water take off to 100ppm, dehydration device 2.2 and regenerating molecular sieve device 2.3 are connected with each other the regeneration cycle to realize molecular sieve
It utilizes.
Regenerating molecular sieve device 2.3 includes the regeneration air preheater of sequentially connected 6 ㎡ and the hot recycling of heater, 10 ㎡
Separator.Regenerating molecular sieve device 2.3 can also use other regenerating molecular sieve devices commonly used in the prior art.
Contain sulfur loading active carbon in mercury removal device 2.4, utilizes the mercury in sulfur loading active carbon removing gas.
Ice chest 3 is plate-fin heat exchanger.
Compressor unit 4 is the refrigeration cycle piston compressor of 2000Nm3/h, a 186kW, and is driven using combustion gas
Dynamic, the refrigeration working medium of compressor unit 4 is provided by refrigerant configuration unit according to proportion.
After well head unstripped gas enters buffer metering device 1.1, after being removed the free fluid and mechanical admixture that may be carried
Into supercharging device 1.2, pretreatment unit 2 is entered after supercharging device 1.2 is pressurized to 3.5Mpa.
Well head unstripped gas will meet the nothing of pre-processing requirements after buffer metering device 1.1, the processing of supercharging device 1.2
Foreign gas is transported to pretreatment unit 2, by deacidifying device 2.1, dehydration device 2.2 and mercury removal device 2.4 processing after, into
Enter ice chest 3, provides cooling capacity by mix refrigerant by compressor unit 4, the natural gas for meeting liquefaction condition is cooled to -144
DEG C or so, 0.45Mpa (G) 95% is decompressed to through throttling and is liquefied, and (LNG is liquid to the interior storage of input LNG storage tank 6 after obtaining LNG product
Change the abbreviation of natural gas (liquefied natural gas)), throttle valve 5 is used to control the stream of the LNG of input LNG storage tank 6
Amount.
Well head natural gas liquefaction recovery system provided by the utility model, scientific structure design is reasonable, at low cost, volume
Small, structure is simple, ease of assembly and maintenance, convenient for dispatching, can be used for skid-mounted type and recycle on the spot, realize small-sized well head natural gas
The liquefaction of resource is recycled, and the recycling benefit of the small tolerance associated gas of individual well and the outlying district oil gas field associated gas without pipe network is realized
With effect is obvious in terms of economizing on resources and protecting environment, can meet the needs of practical application well.
The above-mentioned embodiments merely express the embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Therefore it cannot be interpreted as that a limitation on the scope of the patent of the present invention.It should be pointed out that for the ordinary skill of this field
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this
The protection scope of utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of well head natural gas liquefaction recovery system, which is characterized in that including sequentially connected metering supercharging device, pretreatment
Device, ice chest and LNG storage tank further include the compressor unit being connected with ice chest；It includes sequentially connected for measuring supercharging device
Buffer metering device and supercharging device, pretreatment unit include dehydration device and the depickling being connected respectively with dehydration device dress
It sets, regenerating molecular sieve device and mercury removal device；Supercharging device, deacidifying device, dehydration device, mercury removal device and ice chest sequentially connect
It connects.
2. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that buffer metering device is by mutual
The feed gas separator and filter of connection form.
3. well head natural gas liquefaction recovery system according to claim 2, which is characterized in that filter is basket filtering
Device.
4. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that supercharging device is one
The supercharger of P1.2-3.5Mpa, shaft power 65kW or more.
5. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that deacidifying device includes sequentially connecting
The active carbon filter, dirt filter, amine absorption tower, amine regenerator and the amine liquid pump that connect, amine liquid cooler, amine liquid heat exchanger and horizontal
Tubular sheet heat exchanger.
6. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that dehydration device is by interconnecting
Dehydrating tower and dirt filter composition.
7. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that regenerating molecular sieve device includes
Sequentially connected regeneration air preheater and heater, hot recycling separator.
8. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that contain load sulphur in mercury removal device
Active carbon.
9. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that ice chest is plate fin heat-exchanging
Device.
10. well head natural gas liquefaction recovery system according to claim 1, which is characterized in that be connected to ice chest and LNG is stored up
Throttle valve is provided on pipeline between tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820936633.7U CN208416502U (en) | 2018-06-15 | 2018-06-15 | A kind of well head natural gas liquefaction recovery system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820936633.7U CN208416502U (en) | 2018-06-15 | 2018-06-15 | A kind of well head natural gas liquefaction recovery system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527571A (en) * | 2019-09-11 | 2019-12-03 | 张家港富瑞特种装备股份有限公司 | A kind of natural gas filtering metering dehydration demercuration module |
| CN114646186A (en) * | 2022-03-15 | 2022-06-21 | 中海石油气电集团有限责任公司 | Standard modular natural gas liquefaction system |
-
2018
- 2018-06-15 CN CN201820936633.7U patent/CN208416502U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110527571A (en) * | 2019-09-11 | 2019-12-03 | 张家港富瑞特种装备股份有限公司 | A kind of natural gas filtering metering dehydration demercuration module |
| CN114646186A (en) * | 2022-03-15 | 2022-06-21 | 中海石油气电集团有限责任公司 | Standard modular natural gas liquefaction system |
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