CN208087559U - A kind of low temperature dewatering system - Google Patents
A kind of low temperature dewatering system Download PDFInfo
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- CN208087559U CN208087559U CN201721323269.9U CN201721323269U CN208087559U CN 208087559 U CN208087559 U CN 208087559U CN 201721323269 U CN201721323269 U CN 201721323269U CN 208087559 U CN208087559 U CN 208087559U
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- input terminal
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- low temperature
- heat exchange
- dewatering system
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Abstract
The application provides a kind of low temperature dewatering system, the output end of separation liquid distributing device in the low temperature dewatering system is connect with the input terminal around heat exchange of heat pipe, output end around heat exchange of heat pipe is connect with the input terminal of decompression heat sink and outer transportation metering device respectively, the input terminal of the output end and cold catch pot that are depressured heat sink connects, the output end of cold catch pot and the input terminal of coalescer connect, and the output end of coalescer is connect with the input terminal around heat exchange of heat pipe.The low temperature dewatering system of the application, pass through dual low temperature dewatering, greatly improve the efficiency of wet gas gas-liquid separation, using being carried out around the temperature difference of the heat exchange of heat pipe before and after gas dehydration flow, heat exchange realization cools down to wet gas, dry gas heats, simplify equipment and technological process, so that low temperature dewatering system structure is compacter, floor space is small；And it is energy saving apparent, it is managed and with good anti-high pressure effect to realize consumption reduction, facilitate.
Description
Technical field
This application involves natural gas processing technical field, more particularly to a kind of low temperature dewatering system.
Background technology
The natural gas flowed out from oil and gas wellhead is nearly all saturated by gas phase water, or even can carry a certain amount of liquid water.
The presence of moisture often causes serious consequence in natural gas：Contain CO2And H2The natural gas of S is in the presence of water
It forms acid and corrodes pipeline and equipment；It forms gas hydrates under certain condition and blocks valve, pipeline and equipment；It reduces
Pipeline transmission capacity causes unnecessary power consumption.Moisture is very unfavorable thing in the presence of natural gas.
In the prior art, generally use solvent absorption, solid absorption method carry out purification dehydration to natural gas, but these
Method and process flow is complicated, production consumption is larger, economic benefit is low, and floor space is larger.
Invention content
In view of this, the embodiment of the present application provides, a kind of technological process is simple, energy-saving and compact-sized occupation of land
The smaller low temperature dewatering system of area.
What the technical solution of the application was realized in：
The application provides a kind of low temperature dewatering system, including：
Detach liquid distributing device, around heat exchange of heat pipe, decompression heat sink, cold catch pot, coalescer and outer transportation metering device,
The output end of the separation liquid distributing device is connect with the input terminal around heat exchange of heat pipe,
The output end around the heat exchange of heat pipe input with the decompression heat sink and the outer transportation metering device respectively
End connection,
The output end of the decompression heat sink is connect with the input terminal of the cold catch pot,
The output end of the cold catch pot is connect with the input terminal of the coalescer,
The output end of the coalescer is connect with the input terminal around heat exchange of heat pipe.
Optionally, the low temperature dewatering system further includes：Skid body, it is described around heat exchange of heat pipe, the decompression heat sink, institute
It states cold catch pot and the coalescer is mounted in the skid body.
Optionally, the low temperature dewatering system further includes：Injecting modulating device and atomizer, the injecting modulating device
Output end is connect with the input terminal of the atomizer, the output end of the atomizer respectively with the input for detaching liquid distributing device
End is connected with the input terminal of the cold catch pot.
Optionally, the low temperature dewatering system further includes：Safety monitoring assembly, the input terminal of the safety monitoring assembly with
The output end connection of the separation liquid distributing device, the output end of the safety monitoring assembly and the input terminal around heat exchange of heat pipe
Connection, the safety detection device are installed in the skid body.
Optionally, the safety detection device includes safety valve and blow-down pipe, the input terminal of the safety valve with it is described
Detach the output end connection of liquid distributing device, the output end of the safety valve respectively with the blow-down pipe and described around heat exchange of heat pipe
Input terminal connection.
Optionally, blowoff line is provided on the cold catch pot, the blowoff line includes at least two.
Optionally, the separation liquid distributing device is flash tank, and the output end of the flash tank is with described around heat exchange of heat pipe
Input terminal connects.
Optionally, the decompression heat sink is J-T regulating valves.
Optionally, the cold catch pot includes corrugated plating and wire mesh demister, and the corrugated plating is arranged in the low temperature
The output end in the cold catch pot is arranged in the input terminal of separator, the wire mesh demister.
Optionally, the coalescer includes at least 4 and is formed and carried by resin-bonded by polypropylene, polyester material
The filter core of fold.
A kind of low temperature dewatering system provided by the present application greatly improves wet gas gas-liquid by dual low temperature dewatering
The efficiency of separation is realized using heat exchange is carried out around the temperature difference of the heat exchange of heat pipe before and after natural gas dehydration process flow to wet natural
Gas is cooled down, is heated to dewatered dry gas, and equipment and technological process are simplified so that the low temperature dewatering system
Structure is compacter, and floor space is small；And it is energy saving apparent, it is managed and with good anti-height to realize consumption reduction, facilitate
Press effect.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of low temperature dewatering system of the present embodiment；
Fig. 2 is a kind of structural schematic diagram of low temperature dewatering system of the present embodiment；
Fig. 3 is a kind of structural schematic diagram of low temperature dewatering system of the present embodiment；
Fig. 4 is a kind of structural schematic diagram of low temperature dewatering system of the present embodiment.
Reference numeral
1- detaches liquid distributing device, and 2- is around heat exchange of heat pipe, and 3- is depressured heat sink, 4- cold catch pots, 5- coalescers, outside 6-
Transportation metering device, 7- injecting modulating devices, 8- atomizers, 9- safety valves, 10- blow-down pipes, 11- skid bodys.
Specific implementation mode
The specific implementation mode of the application is described below in conjunction with the accompanying drawings.
Referring to Fig. 1, a kind of low temperature dewatering system that one embodiment of the application provides carries out wet gas using the system
Low temperature dewatering processing, the low temperature dewatering system include：
Detach liquid distributing device 1, around heat exchange of heat pipe 2, decompression heat sink 3, cold catch pot 4, coalescer 5 and outer defeated metering
Device 6,
The output end of the separation liquid distributing device 1 is connect by pipeline with the input terminal around heat exchange of heat pipe 2, from well head
Wet gas out is entered from the input terminal of the separation liquid distributing device 1 in the separation liquid distributing device 1 by pipeline, described
Separation liquid distributing device 1 is flash tank, and the right chamber of the flash tank is flash chamber, and the input terminal of the flash tank into
Regulating valve is housed on mouth pipeline, for reducing pressure, to realize flash process, wet gas is in the separation liquid distributing device 1
Middle progress first time dehydration, the wet gas by first time dehydration are exported via the output end of the separation liquid distributing device 1, so
It is described in heat exchange of heat pipe 2 from the input terminal entrance around heat exchange of heat pipe 2 by pipeline afterwards, described in heat exchange of heat pipe 2
It cools down；
The output end around heat exchange of heat pipe 2 is connect by pipeline with the input terminal of the decompression heat sink 3, described
It cools to -6 DEG C or so of wet gas around heat exchange of heat pipe 2 and is exported by the output end around heat exchange of heat pipe 2, pass through pipeline
Wet gas, which is inputted from the input terminal of the decompression heat sink 3 in the decompression heat sink 3, further to cool down, is depressured；
The decompression heat sink 3 can be J-T regulating valves, and the J-T regulating valves are Joule-Thomson throttling expansion
Valve makes pressurized natural gas expand by generates low temperature by expenditure and pressure, and natural gas natural gas system after J-T regulating valves is normal
5.3~5.8MPa of operating pressure (G), highest operating pressure 5.8MPa (G), temperature is -10~-15 DEG C after throttle valve throttling, if
Count -19.8 DEG C of temperature；
The output end of the decompression heat sink 3 is connect by pipeline with the input terminal of the cold catch pot 4, through described
Be depressured the wet gas of the cooling of heat sink 3, decompression from the output end of the decompression heat sink 3 by pipeline from the low temperature
The input terminal of separator 4, which inputs in the cold catch pot 4, carries out second of dehydration；
The output end of the cold catch pot 4 is connect by pipeline with the input terminal of the coalescer 5, in the low temperature point
It is exported from the output end of the cold catch pot 4 from dewatered dry gas in device 4, by pipeline from the coalescer 5
Input terminal enter the coalescer 5 in, the coalescer 5 in dry gas solid and liquid impurity handle, institute
The liquid that dust and minimum size droplet diameter are 1 μm in natural gas gas can be removed by stating coalescer 5, and be 1 μm to grain size
Dust, drop separation efficiency are 99%；
The output end of the coalescer 5 is connect by pipeline with the input terminal around heat exchange of heat pipe 2, in the coalescer
It carries out treated dry gas in 5 to be exported by the output end of the coalescer 5, by pipeline from described around heat exchange of heat pipe 2
Input terminal, which enters the heat given out with the wet gas cooling in heat exchange of heat pipe 2 in heat exchange of heat pipe 2, to carry out
It is exported through the output end around heat exchange of heat pipe 2 after heat exchange；
The input terminal of the outer transportation metering device 6 is connect by pipeline with the output end around heat exchange of heat pipe 2, through described
The dry gas carried out after heat exchange exported around the output end of heat exchange of heat pipe 2 is by pipeline from the outer transportation metering device 6
Input terminal enters in the outer transportation metering device 6 and carries out metering output.
In the embodiment of the present application, define liquid level total height in the cold catch pot 4 and the coalescer 5 10% is
LL, the 30% of liquid level total height is L, and the 60% of liquid level total height is H, and the 80% of liquid level total height is HH, wherein the low temperature
In normal operating conditions, liquid level is the 30%~60% of total height for separator 4 or the coalescer 5；In the present embodiment, institute
It states and is respectively provided with two blowoff lines on cold catch pot 4 and the coalescer 5, one manually opened, an automatic opening；Its
In, the hand-operated valve on the blowoff line of automatic opening is normally open, when liquid level is LL~L, the cold catch pot 4
Or electric control valve on the blowoff line that automatically turns on of the coalescer 5 and electrical ball valve are closed；When liquid level height
When degree is L~H, the electric control valve of the cold catch pot 4 or the coalescer 5 is opened, and sewage will pass through motorized adjustment
Valve and the drain valve on the blowoff line of automatic opening are discharged to common sewer；It is described when liquid level is H~HH
The electric control valve of cold catch pot 4 or the coalescer 5 continues on, and sewage is discharged to by electric control valve and drain valve
Common sewer, and the electrical ball valve in bypass is also opened, and sewage is delivered to common sewer by bypass simultaneously；When liquid level reaches
HH or when less than LL, the cold catch pot 4 or the coalescer 5 will automatic alarm, prompt maintenance of breaking down, at this time
Manually opened another way blowoff line, sewage is needed to run past manually opened blowoff line and be discharged to common sewer.
A kind of low temperature dewatering system provided in this embodiment greatly improves wet gas gas by dual low temperature dewatering
The efficiency of liquid separation is realized using heat exchange is carried out around the temperature difference of the heat exchange of heat pipe before and after natural gas dehydration process flow to wet day
Right gas is cooled down, is heated to dewatered dry gas, simplifies equipment and technological process so that the low temperature dewatering system
Structure of uniting is compacter, and floor space is small；And it is energy saving apparent, it is managed and with anti-well to realize consumption reduction, facilitate
High pressure effect.
Referring to Fig. 2, in one embodiment of the application, low temperature dewatering processing is still carried out to natural gas with the low temperature dewatering system
For, the low temperature dewatering system can also include：Skid body 11, it is described around heat exchange of heat pipe 2, it is the decompression heat sink 3, described
Cold catch pot 4 and the coalescer 5 are mounted in the skid body 11, are reduced floor space and are moved easily.
The low temperature dewatering system can also include：Injecting modulating device 7, atomizer 8 and skid body 11, the injecting modulation
The output end of device 7 is connect by pipeline with the input terminal of the atomizer 8, and the output end of the atomizer 8 passes through pipeline point
It is not connected with the input terminal of the input terminal for detaching liquid distributing device 1 and the cold catch pot 4.
Methanol is added in the injecting modulating device 7 first, methanol is logical from the output end of the injecting modulating device 7 again
Piping enters from the input terminal of the atomizer 8 in atomizer 8, into the methanol in the atomizer 8 after atomization by
The output end of the atomizer 8 exports, respectively the input terminal by pipeline from the separation liquid distributing device 1 and the cryogenic separation
The input terminal of device 4 enters in the separation liquid distributing device 1 and the cold catch pot 4 carries out mixed dehydration with wet gas.
In the embodiment of the present application, the low temperature dewatering system is relatively low using the solidification point of methanol, and methanol and water are mixed
Make this principle of the freeze point depression of water after conjunction, plays low temperature gas-liquid separation, antifreeze purpose；It is molten that methanol can also serve as acid gas removing
Agent so that the low temperature dewatering system by the dehydration of natural gas, natural gas recycling, acid gas removing be closely combined into one it is whole
Body simplifies technological process.
Referring to Fig. 3, in one embodiment of the application, low temperature dewatering processing is still carried out to natural gas with the low temperature dewatering system
For, the low temperature dewatering system can also include：Safety monitoring assembly, the safety monitoring assembly include safety valve 9 and put
The input terminal of blank pipe line 10, the safety valve 9 is connected by pipeline with the output end for detaching liquid distributing device 1, the safety
The output end of valve 9 is connect with the blow-down pipe 10 and the input terminal around heat exchange of heat pipe 2 respectively by pipeline；The separation
The wet gas of methanol is mixed in liquid distributing device 1 after the output end output of the separation liquid distributing device 1, the safety valve 9
Pressure monitoring is carried out to the wet gas of output, the air pressure of wet gas occurs under superpressure situation if monitoring, the safety valve 9
It will be automatically closed with the access between the input terminal of heat exchange of heat pipe 2, leading between unlatching and the blow-down pipe 10
Road, wet gas will export discharge by the output end of the blow-down pipe 10 and be depressurized.
In one embodiment of the application, the cold catch pot 4 of the low temperature dewatering system includes that corrugated plating and silk screen remove
The input terminal in the cold catch pot 4 is arranged in foam device, the corrugated plating, and the wire mesh demister is arranged in the cryogenic separation
Corrugated plating and wire mesh demister is arranged in the output end of device 4, the cold catch pot 4, and two-stage separation may be implemented, can remove day
The minimum grain size drop for the being 5 μm and drop separation efficiency for being 5 μm to grain size is 99% in right gas, to meet the low temperature dewatering
The normal operation of system.
In one embodiment of the application, the coalescer 5 of the low temperature dewatering system includes at least 4 by polypropylene, poly-
Ester material can also be increased or be subtracted according to the different of processing gas amount by the resin-bonded filter core formed and carry fold
The radical of few filter core, the coalescer 5 can remove the drop that dust in natural gas and minimum grain size are 1 μm, and to grain
Diameter is that the efficiency that 1 μm of dust and drop are detached is 99%；The filter core can pass through the technical finesses such as oleophobic, hydrophobic.
Referring to Fig. 4, a kind of low temperature dewatering system that one embodiment of the application provides, including：
Detach liquid distributing device 1, around heat exchange of heat pipe 2, decompression heat sink 3, cold catch pot 4, coalescer 5, outer defeated metering
Device 6, injecting modulating device 7, atomizer 8, safety valve 9, blow-down pipe 10 and skid body 11,
The output end of the injecting modulating device 7 is connect by pipeline with the input terminal of the atomizer 8,
The output end of the atomizer 8 by pipeline respectively with liquid distributing device 1 and the cold catch pot 4 of detaching
Input terminal connects,
The output end of the separation liquid distributing device 1 is connect by pipeline with the input terminal of the safety valve 9,
The output end of the safety valve 9 by pipeline respectively with the input around heat exchange of heat pipe 2 and the blow-down pipe
End connection,
The output end around heat exchange of heat pipe 2 by pipeline respectively with the decompression heat sink 3 and the outer defeated metering
The input terminal of device 6 connects,
The output end of the decompression heat sink 3 is connect by pipeline with the input terminal of the cold catch pot 4,
The output end of the cold catch pot 4 is connect by pipeline with the input terminal of the coalescer 5,
The output end of the coalescer 5 is connect by pipeline with the input terminal around heat exchange of heat pipe 2.
In the embodiment of the present application, it is described around heat exchange of heat pipe 2, it is the decompression heat sink 3, the cold catch pot 4, described
Coalescer 5, the safety valve 9 and the blow-down pipe 10 are mounted in the skid body 11, realize the low temperature dewatering system
Sledge dressization, reduce the floor space of the low temperature dewatering system.
It is described to realize " small temperature difference limit heat exchange " around heat exchange of heat pipe in the embodiment of the present application, it is changed for dry, wet gas adverse current
Heat provides technical guarantee, and whole process is not necessarily to open firing, and securely and reliably, it can be achieved that unattended, energy-saving effect is apparent；
The methanol being added in the injecting modulating device is injected through atomizer using multi-point injection mode, and atomizer can be realized
The injection of multiple and different angles, it is ensured that methanol is mixed with the uniform of wet gas, play wet gas and water cryogenic separation and
Antifreeze purpose；
And the low temperature dewatering system of the application can add sledge plate, be designed using sledge dressization, compact-sized, equipment is simple
Change, is energy saving, there is more obvious superiority.
The application preferred embodiment and embodiment are explained in detail above in conjunction with attached drawing, but the application
The above-described embodiment and examples are not limited to, within the knowledge of those skilled in the art, can also not taken off
It is made a variety of changes under the premise of conceiving from the application.
Claims (9)
1. a kind of low temperature dewatering system, which is characterized in that including：
Detach liquid distributing device (1), around heat exchange of heat pipe (2), decompression heat sink (3), cold catch pot (4), coalescer (5) and outside
Transportation metering device (6),
The output end of the separation liquid distributing device (1) is connect with the input terminal around heat exchange of heat pipe (2),
The output end around heat exchange of heat pipe (2) respectively with the decompression heat sink (3) and the outer transportation metering device (6)
Input terminal connects,
The output end of the decompression heat sink (3) is connect with the input terminal of the cold catch pot (4),
The output end of the cold catch pot (4) is connect with the input terminal of the coalescer (5),
The output end of the coalescer (5) is connect with the input terminal around heat exchange of heat pipe (2),
Skid body (11), it is described around heat exchange of heat pipe (2), the decompression heat sink (3), the cold catch pot (4) and described poly-
Knot device (5) is mounted in the skid body (11).
2. a kind of low temperature dewatering system according to claim 1, which is characterized in that further include：Injecting modulating device (7) and
The output end of atomizer (8), the injecting modulating device (7) is connect with the input terminal of the atomizer (8), the atomizer
(8) output end is connected with the input terminal of the input terminal for detaching liquid distributing device (1) and the cold catch pot (4) respectively.
3. a kind of low temperature dewatering system according to claim 1, which is characterized in that further include：Safety monitoring assembly, it is described
The input terminal of safety monitoring assembly is connected with the output end for detaching liquid distributing device (1), the output of the safety monitoring assembly
End is connect with the input terminal around heat exchange of heat pipe (2), and the safety detection device is installed in the skid body (11).
4. a kind of low temperature dewatering system according to claim 3, which is characterized in that the safety detection device includes safety
Valve (9) and blow-down pipe (10), the input terminal of the safety valve (9) are connected with the output end for detaching liquid distributing device (1), institute
The output end for stating safety valve (9) is connect with the blow-down pipe (10) and the input terminal around heat exchange of heat pipe (2) respectively.
5. a kind of low temperature dewatering system according to claim 1, which is characterized in that be arranged on the cold catch pot (4)
It includes at least two to have blowoff line, the blowoff line.
6. a kind of low temperature dewatering system according to claim 1, which is characterized in that the separation liquid distributing device (1) is to dodge
Steaming pot, the output end of the flash tank are connect with the input terminal around heat exchange of heat pipe (2).
7. a kind of low temperature dewatering system according to claim 1, which is characterized in that the decompression heat sink (3) is J-T
Regulating valve.
8. a kind of low temperature dewatering system according to claim 1, which is characterized in that the cold catch pot (4) includes wave
Card and wire mesh demister, the corrugated plating setting is in the input terminal of the cold catch pot (4), the wire mesh demister setting
Output end in the cold catch pot (4).
9. a kind of low temperature dewatering system according to claim 1, which is characterized in that the coalescer (5) includes at least 4
The resin-bonded filter core formed and carry fold is passed through by polypropylene, polyester material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201721323269.9U CN208087559U (en) | 2017-10-13 | 2017-10-13 | A kind of low temperature dewatering system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721323269.9U CN208087559U (en) | 2017-10-13 | 2017-10-13 | A kind of low temperature dewatering system |
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| CN208087559U true CN208087559U (en) | 2018-11-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109652154A (en) * | 2019-01-15 | 2019-04-19 | 西安长庆科技工程有限责任公司 | A kind of prying gas deoiling, dewatering integrated device and method |
| CN110408447A (en) * | 2019-08-31 | 2019-11-05 | 中国石油集团川庆钻探工程有限公司 | Natural gas dehydration method for shale gas pilot production operation |
| CN110540884A (en) * | 2019-09-30 | 2019-12-06 | 中国石油集团川庆钻探工程有限公司 | Natural gas dehydration device for shale gas pilot production operation |
| CN110617049A (en) * | 2019-09-30 | 2019-12-27 | 中国石油集团川庆钻探工程有限公司 | A dehydration cooling system for well head natural gas |
-
2017
- 2017-10-13 CN CN201721323269.9U patent/CN208087559U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109652154A (en) * | 2019-01-15 | 2019-04-19 | 西安长庆科技工程有限责任公司 | A kind of prying gas deoiling, dewatering integrated device and method |
| CN110408447A (en) * | 2019-08-31 | 2019-11-05 | 中国石油集团川庆钻探工程有限公司 | Natural gas dehydration method for shale gas pilot production operation |
| CN110540884A (en) * | 2019-09-30 | 2019-12-06 | 中国石油集团川庆钻探工程有限公司 | Natural gas dehydration device for shale gas pilot production operation |
| CN110617049A (en) * | 2019-09-30 | 2019-12-27 | 中国石油集团川庆钻探工程有限公司 | A dehydration cooling system for well head natural gas |
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