CN204958819U - Liquefied gas recovery unit in intensive natural gas - Google Patents
Liquefied gas recovery unit in intensive natural gas Download PDFInfo
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- CN204958819U CN204958819U CN201520723297.4U CN201520723297U CN204958819U CN 204958819 U CN204958819 U CN 204958819U CN 201520723297 U CN201520723297 U CN 201520723297U CN 204958819 U CN204958819 U CN 204958819U
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Abstract
The utility model discloses a liquefied gas recovery unit in intensive natural gas, it includes the slug flow trap, the gaseous phase pipeline of slug flow trap links to each other with tourie lower part gaseous phase import, the liquid phase export of tourie bottom is linked together with three -phase separator through the liquid phase pipeline, the three -phase separator oil -out is linked together with C2 tower side line oil inlet through the oil pipe who is connected with C2 tower entry heat exchanger, the liquid phase export is linked together through the side line import of C2 tower liquid phase pipeline with the C4 tower at the bottom of the tower of C2 tower, the cooling liquid exit of C4 top reflux cooler is linked together through a branch pipe and liquefied petroleum gas pipeline, the oil -out connects gradually C2 tower entry heat exchanger at the bottom of the tower of C4 tower, three -phase separator heater and air cooler, the air cooler is respectively through pipeline and C2 tower backward flow mouth, finished product condensation oil pipe line is linked together, the air cooler still is linked together with tourie backward flow mouth through the pipeline that is equipped with the backward flow booster pump. Adopt this device showing and improved high added value product LPG output.
Description
Technical field
The utility model relates to liquefied gas restoring device in a kind of strengthening Sweet natural gas, and particularly in refined natural gas process, condensate oil backflow is mixed into extra large pipe Sweet natural gas the device that slug catcher improves liquefied petroleum gas (LPG) output.
Background technology
Liquefied petroleum gas (LPG) LPG is the mixture of propane and butane, produces when refining crude oil, or from the gas that oil or gas exploitation course volatilize.At suitable pressures with storage in liquid in reservoir container, be often used as cooking fuel, light vehicle fuel etc.
Along with the prolongation of gas well natural gas construction cycle, in Sweet natural gas, heavy constituent content gets more and more, and wherein the content of C3, C4 also accounts for suitable ratio, and the price of LPG comparatively G&C is higher, many gas field treatment plants have set up LPG separation system.
Current offshore gas well treatment plant uses slug catcher, triphase separator, J/T valve, low-temperature separator and C2 tower, and gas-oil mixture is isolated the shallow cold technique of Sweet natural gas, LPG and condensate oil by C4 tower.The restriction of J/T valve refrigeration is subject to because the method LPG reclaims ability, a large amount of C3, C4 component escapes in gas phase in slug catcher and triphase separator, particularly when whole system pressure is lower, the problem that C3, C4 escape into Sweet natural gas is more outstanding.
Also have technique to use refrigerator or expander refrigeration to replace J/T valve strengthening refrigeration, though recovering effect has enhancing, but the method is invested and energy consumption is larger.
Summary of the invention
The purpose of this utility model is the deficiency overcoming prior art, provide a kind of significantly improve high value added product liquefied petroleum gas (LPG) output and energy consumption significantly reduce one strengthening Sweet natural gas in liquefied gas restoring device.
For reaching above object, the utility model by the following technical solutions:
Liquefied gas restoring device in one strengthening Sweet natural gas of the present utility model, it comprises slug catcher, the vapor delivery line of described slug catcher is connected with the bottom gas phase import of tourie, the bottom liquid phases outlet of described tourie is connected with triphase separator by liquid phase pipeline, the liquid-phase outlet of described slug catcher is connected with liquid phase pipeline by pipeline, the aqueous phase outlet of described triphase separator is connected with the outer comb of aqueous phase, described triphase separator oil outlet is connected with C2 tower side line oil-in by the oil pipe being connected with C2 tower entrance interchanger, the tower top of described C2 tower is connected with natural gas line, liquid-phase outlet at the bottom of the tower of described C2 tower is connected with the side line import of C4 tower by C2 tower liquid phase pipeline, the tower top of described C4 tower is connected with C4 trim the top of column water cooler, the cooling liquid outlet of described C4 trim the top of column water cooler to be connected with C4 tower refluxing opening by an arm and to be connected with liquefied petroleum air pipe by another arm, at the bottom of the tower of described C4 tower, reboiler is installed, oil outlet at the bottom of the tower of described C4 tower connects C2 tower entrance interchanger successively by transition pipeline, triphase separator well heater and air cooler, described air cooler is respectively by pipeline and C2 tower refluxing opening, finished product condensate oil pipeline is connected, described air cooler is also connected with tourie refluxing opening by the pipeline that backflow topping-up pump is housed.
Remarkable advantage of the present utility model is in the following aspects:
(1) use refining condensate oil backflow tourie to absorb C3, C4 component volume increase LPG in Sweet natural gas, significantly improve high value added product LPG output.
(2) use refining condensate oil backflow tourie to absorb C3, C4 component volume increase LPG in Sweet natural gas, strengthen low ternperature separation process with use refrigeration equipment and increase production compared with LPG, energy consumption significantly reduces, and facility investment is few, is easy to transform.
(3) use refining condensate oil backflow tourie to absorb C3, C4 component volume increase LPG in Sweet natural gas, conveniently can change condensate oil quantity of reflux when changing keep good LPG to reclaim ability at supplied materials oil gas composition, flow, operate flexible.
(4) this device is applicable to the workflow reengineering of the shallow cold explained hereafter condensate oil in natural gas processing field, the particularly situation (as the reasons such as supplied materials gas pressure reduction cause) that declines of the refrigerating device refrigeration effect such as J/T valve, be used on former technical process basis and use this plant modification, LPG effect of increasing production is good, and less investment, be easy to transformation, handled easily is safeguarded.
Accompanying drawing explanation
Accompanying drawing is a kind of schematic diagram strengthening liquefied gas restoring device in Sweet natural gas of the present utility model.
Embodiment
Below in conjunction with concrete drawings and Examples, the utility model is described in detail.
Liquefied gas restoring device in one strengthening Sweet natural gas as shown in drawings, it comprises slug catcher 1, the vapor delivery line of described slug catcher 1 is connected with the bottom gas phase import of tourie 2, the bottom liquid phases outlet of described tourie is connected with triphase separator 3 by liquid phase pipeline, the liquid-phase outlet of described slug catcher 1 is connected with liquid phase pipeline by pipeline, the aqueous phase outlet of triphase separator 3 is connected with the outer comb of aqueous phase, triphase separator 3 oil outlet is connected with C2 tower 7 side line oil-in by the oil pipe being connected with C2 tower entrance interchanger 6, the tower top of C2 tower is connected with natural gas line, liquid-phase outlet at the bottom of the tower of C2 tower is connected with the side line import of C4 tower 8 by C2 tower liquid phase pipeline, the tower top of C4 tower is connected with C4 trim the top of column water cooler 9, the cooling liquid outlet of described C4 trim the top of column water cooler 9 to be connected with C4 tower refluxing opening by an arm and to be connected with liquefied petroleum air pipe by another arm, reboiler 10 is installed at the bottom of the tower of C4 tower, oil outlet at the bottom of the tower of C4 tower connects C2 tower entrance interchanger 6 successively by transition pipeline, the well heater of triphase separator 3 and air cooler 4, described air cooler 4 is respectively by pipeline and C2 tower refluxing opening, finished product condensate oil pipeline is connected, described air cooler 4 is also connected with tourie 2 refluxing opening by the pipeline that backflow topping-up pump 5 is housed.
Adopt operation steps of the present utility model as follows: the gas-oil mixture that sea pipe comes is separated into gas-liquid two-phase through slug catcher 1, liquid phase enters triphase separator 3 and isolates aqueous phase, gas phase and oil phase, wherein aqueous phase is arranged outward, gas phase and tourie 2 gas phase are out jointly for the preparation of Sweet natural gas, oil phase enters C2 tower 7 after the heat exchange of C2 tower entrance interchanger 6 heats up, C2 column overhead is isolated Sweet natural gas and is made sales gas, at the bottom of C2 tower tower, liquid phase enters C4 tower 8, C4 column overhead gas phase is through cooling and isolating liquefied petroleum gas (LPG) (LPG), finished product condensate oil is gone out at the bottom of C4 tower tower, finished product condensate oil makes heat source to after the preheating of C2 tower entrance interchanger 6 triphase separator 3, cool through air cooler 4 afterwards, divide work three part, a part does the backflow of C2 column overhead, a part goes out system and makes finished product condensate oil, a part is back to tourie 2 and slug catcher 1 gas phase counter current contact out by topping-up pump 5 supercharging, tourie outlet liquid phase and slug catcher 1 export liquid-phase mixing and enter triphase separator 3, tourie 2 gas phase is out for the preparation of Sweet natural gas.
Claims (1)
1. liquefied gas restoring device in a strengthening Sweet natural gas, it is characterized in that: it comprises slug catcher, the vapor delivery line of described slug catcher is connected with the bottom gas phase import of tourie, the bottom liquid phases outlet of described tourie is connected with triphase separator by liquid phase pipeline, the liquid-phase outlet of described slug catcher is connected with liquid phase pipeline by pipeline, the aqueous phase outlet of described triphase separator is connected with the outer comb of aqueous phase, described triphase separator oil outlet is connected with C2 tower side line oil-in by the oil pipe being connected with C2 tower entrance interchanger, the tower top of described C2 tower is connected with natural gas line, liquid-phase outlet at the bottom of the tower of described C2 tower is connected with the side line import of C4 tower by C2 tower liquid phase pipeline, the tower top of described C4 tower is connected with C4 trim the top of column water cooler, the cooling liquid outlet of described C4 trim the top of column water cooler to be connected with C4 tower refluxing opening by an arm and to be connected with liquefied petroleum air pipe by another arm, at the bottom of the tower of described C4 tower, reboiler is installed, oil outlet at the bottom of the tower of described C4 tower connects C2 tower entrance interchanger successively by transition pipeline, triphase separator well heater and air cooler, described air cooler is respectively by pipeline and C2 tower refluxing opening, finished product condensate oil pipeline is connected, described air cooler is also connected with tourie refluxing opening by the pipeline that backflow topping-up pump is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723297.4U CN204958819U (en) | 2015-09-17 | 2015-09-17 | Liquefied gas recovery unit in intensive natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723297.4U CN204958819U (en) | 2015-09-17 | 2015-09-17 | Liquefied gas recovery unit in intensive natural gas |
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| Publication Number | Publication Date |
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| CN204958819U true CN204958819U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520723297.4U Active CN204958819U (en) | 2015-09-17 | 2015-09-17 | Liquefied gas recovery unit in intensive natural gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854448A (en) * | 2021-02-03 | 2022-08-05 | 中国石油天然气集团有限公司 | Recovery device of liquefied gas in reforming hydrogen production |
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2015
- 2015-09-17 CN CN201520723297.4U patent/CN204958819U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114854448A (en) * | 2021-02-03 | 2022-08-05 | 中国石油天然气集团有限公司 | Recovery device of liquefied gas in reforming hydrogen production |
| CN114854448B (en) * | 2021-02-03 | 2024-03-26 | 中国石油天然气集团有限公司 | Recovery device for liquefied gas in hydrogen production by reforming |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170407 Address after: 100027 Beijing city Dongcheng District Dongzhimen Street No. 6 Patentee after: CNOOC Energy Development Co., Ltd. Patentee after: Company limited of Hai Youzong energy-saving and emission-reduction monitoring center Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Energy Development Co., Ltd. Patentee before: Company limited of Hai Youzong energy-saving and emission-reduction monitoring center |