CN101280883A - Technological process recycling retail natural gas - Google Patents
Technological process recycling retail natural gas Download PDFInfo
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- CN101280883A CN101280883A CNA2008100443610A CN200810044361A CN101280883A CN 101280883 A CN101280883 A CN 101280883A CN A2008100443610 A CNA2008100443610 A CN A2008100443610A CN 200810044361 A CN200810044361 A CN 200810044361A CN 101280883 A CN101280883 A CN 101280883A
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Abstract
The invention relates to a technique for recycling scattered natural gas for stone oil natural gas drill site, petroleum refinery. According to the invention, natural gas hydrocarbon mixing recycle is carried out for each components of scattered natural gas. The technical scheme comprises feeding the collected scattered natural gas into a cylinder from a gas inlet via a gas valve; opening a high-pressure water pump, water in the water tank is pressed into the cylinder and gas pressure increases with decrease of gas compartment volume in the cylinder; opening the air outlet valve when the gas pressure in the cylinder is higher than internal pressure of the air storage tank, the natural gas enters the air storage tank; opening the water-outlet valve on cylinder bottom, the water is discharged from the cylinder, gas pressure reduces and the air outlet valve shuts down when internal pressure of the cylinder is lower than internal pressure of the air storage tank; opening the gas valve when the internal pressure of the cylinder is lower than gas feed pressure, thus the natural gas is recycled by to-and-fro movement. The invention has simple flow scheme, high coefficient of recovery, simple maintenance, low operating cost, recycle for scattered natural gas in various spaces.
Description
Technical field
The present invention relates to a kind of technological method that is used for petroleum gas well site, oil refinery recovery retail natural gas.
Background technique
In the gas gathering and transportation process, for making full use of resource, increase economic efficiency, need reclaim hydrocarbon mixture in the rock gas, be commonly referred to lighter hydrocarbons recovery.Product after the lighter hydrocarbons recovery can be divided into ethane, propane, butane, liquefied petroleum gas (LPG) (propane, butane mixture) and light oil.
Rock gas can be divided into dry gas (based on the C of methane by component
1, C
2Component), liquefied petroleum gas (LPG) (propane, butane mixture), light oil (C
5And C
5 +Component).Present lighter hydrocarbons recovery mainly is meant and reclaims liquefied petroleum gas (LPG) and light oil constituents from associated gas.And existing technology mostly is emptying or ignites the torch the processing of dry gas, can't recycle, and therefore causes the loss and the waste of a large amount of valuable lighter hydrocarbons resources.
At present, large-scale lighter hydrocarbons recovery technology such as swell refrigeration from rock gas, ammonia cold-peace propane refrigeration etc. are quite ripe, from associated gas, well head separates gas, big jar Volatile Gas, the recovery lighter hydrocarbons technology of gas stringer gas and outlying district rock gas middle and small scale is to develop from the former basically, miniaturization, this has just caused conventional lighter hydrocarbons recovery technology to be used for stingy amount rock gas recovery lighter hydrocarbons, exist investment big, device is complicated, efficient is low, Operation and Maintenance expense height, turnover is long or just receive techno-economic question such as not backing up money at all, moreover can't recycle dry gas wherein.Therefore, suddenly wait to develop that a kind of investment is low, technology is simple, convenient, flexible, the recyclable rock gas full constituent recovery method that comprises the various lighter hydrocarbons of dry gas.
Summary of the invention
The objective of the invention is to: for each component to the block of cells retail natural gas comprises that dry gas carries out rock gas and mixes the hydrocarbon recovery, a kind of technological method that reclaims retail natural gas of special proposition.
In order to reach above purpose, the present invention is by the following technical solutions: a kind of technological method that reclaims retail natural gas, adopt and mix hydrocarbon centrifugal water strength body compress technique, it is characterized in that: the retail natural gas that will need earlier to collect is imported cylinder (3) or (4) by air intake through breather cheek valve (6) or (8); Open high-pressure water pump (2), the water in the water tank (1) is pressed in the cylinder (3) by high pressure water valve (13) through high pressure water valve (10), and along with gas space volume in the cylinder reduces, gas pressure increases; When gas pressure was higher than suction pressure in the cylinder (3), breather cheek valve (6) was closed; When gas pressure in the cylinder (3) was higher than in the gas holder (5) gas pressure, unidirectional gas outlet valve (7) was opened, and needed the natural gas via air valve (14) collected, entered gas holder (5) by air valve (18); Open cylinder (3) bottom outlet valve (13), the water in the cylinder is discharged cylinder, through water valve (13), (12), water pump (2), water valve (16), (17), enters in the cylinder (4), and breather cheek valve this moment (6) is opened air-breathing automatically; Along with the rock gas in the continuous compression cylinder of high pressure water (4), when in-cylinder pressure was higher than suction pressure, breather cheek valve (8) was closed, and high-pressure natural gas presses off unidirectional gas outlet valve (9), enters gas holder (5) through air valve (15), (18); After the rock gas in the cylinder (4) all is pressed into gas holder (5), water valve (17), (11), (13), air valve (14) are opened, water valve (12), (16), air valve (15) is closed, high pressure water in the cylinder (4) is pressed in the cylinder (3) through water valve (17), (11), water pump (2), water valve (13), gas outlet valve this moment (9) cuts out, and suction valve (8) is opened air-breathing automatically, thereby finishes a circulation; At last after gas holder (5) is full of high-pressure natural gas, by the outward transport of air valve (19) input high-pressure natural gas container truck.
The recovery retail natural gas device that the present invention relates to, form by water tank, high-pressure water pump, cylinder, gas holder, air valve and water valve, its structure characteristic is: water tank (1) is with pipeline and high-pressure water pump (2), link to each other bottom cylinder (3) or (4) again, cylinder (3) or (4) bottom link to each other with high-pressure water pump (2) inlet again, form water-flow circuit, the each several part pipeline is equipped with high pressure water valve (10), (11), (12), (13), (16), (17); Cylinder (3) or (4) top have air intake and air outlet, breather cheek valve (6), (8) and unidirectional gas outlet valve (7), (9) are housed respectively, the air outlet is connected with gas holder (5) with pipeline, be connected with High-pressure air valve (14), (15), (18) in the each several part pipeline, gas holder (5) air outlet is equipped with air valve (19).
Compared with prior art, the present invention has following beneficial effect: (1) technological process is simple, adopts high-pressure water pump to replace gas compressor, and plant investment is low, is about 50% of gas compression machine technology; (2) can reclaim present irretrievable dry gas, the rock gas recovery rate is 100%; (3) cancellation inlet qi exhaustion water operation; (4) except that high-pressure water pump and valve adopt procedure auto-control, do not have other moving member, operation, safeguard simple and operating cost low; (5) but the device skidization can be carried out series and parallel operation according to different sources of the gas, tolerance capital equipment (high-pressure water pump and cylinder), the device operating flexibility is big.
Description of drawings
Accompanying drawing is a kind of apparatus structure schematic representation that reclaims the technological method of retail natural gas of the present invention.
Among the figure: 1. water tank; 2. high-pressure water pump; 3,4. cylinder; 5. gas holder; 6,8. breather cheek valve; 7,9. unidirectional gas outlet valve; 10,11,12,13,16,17. high pressure water valves; 14,15,18,19. High-pressure air valves.
Embodiment
Below in conjunction with accompanying drawing enforcement of the present invention is described further.
Shown in accompanying drawing, this recovery method is: technological process of the present invention is made up of water tank 1, high-pressure water pump 2, cylinder 3,4, gas holder 5, breather cheek valve 6,8, unidirectional gas outlet valve 7,9, high pressure water valve 10,11,12,13,16,17, High- pressure air valve 14,15,18,19.Its technological process is as follows: rock gas (NG) is after suction valve 6 is full of cylinder 3, water is pressed into cylinder 3 by high-pressure water pump 2, and (this moment, valve 10,11,14,17 left, valve 12,15,16 closes), along with the NG in the continuous compression cylinder 3 of high pressure water and after reaching certain pressure, breather cheek valve 6 is closed, and high pressure air presses off unidirectional gas outlet valve 7 and enters air cylinder 5 through valve 14,18.After the NG in the cylinder 3 all is pressed into air cylinder 5, valve 13,12,16,15 is opened, high pressure water in the cylinder 3 is pressed in the cylinder 4 through valve 13,12, pump 2, valve 16,17, this moment, valve 6 was opened air-breathing automatically, along with the NG in the continuous compression cylinder 4 of high pressure water and after reaching certain pressure, valve 8 closes, and high pressure air presses off one-way valve 9 and enters air cylinder 5 through valve 15,18.After the NG in the cylinder 4 all was pressed into air cylinder 5, valve 17,11,13,14 was opened, and valve 12,16,15 cuts out, and the high pressure water in the cylinder 4 is pressed in the cylinder 3 through valve 17,11, pump 2, valve 13, and valve 9 passes, valve 8 are opened air-breathing automatically at this moment.Thereby finish a circulation.After gas holder 5 is full of high-pressure natural gas, can enter the outward transport of high-pressure natural gas container truck by valve 19.
Claims (2)
1. a technological method that reclaims retail natural gas adopts and mixes hydrocarbon centrifugal water strength body compress technique, it is characterized in that: the retail natural gas that will need earlier to collect is imported cylinder (3) or (4) by air intake through breather cheek valve (6) or (8); Open high-pressure water pump (2), the water in the water tank (1) is pressed in the cylinder (3) by high pressure water valve (13) through high pressure water valve (10), and along with gas space volume in the cylinder reduces, gas pressure increases; When gas pressure was higher than suction pressure in the cylinder (3), breather cheek valve (6) was closed; When gas pressure in the cylinder (3) was higher than in the gas holder (5) gas pressure, unidirectional gas outlet valve (7) was opened, and needed the natural gas via air valve (14) collected, entered gas holder (5) by air valve (18); Open cylinder (3) bottom outlet valve (13), the water in the cylinder is discharged cylinder, through water valve (13), (12), water pump (2), water valve (16), (17), enters in the cylinder (4), and breather cheek valve this moment (6) is opened air-breathing automatically; Along with the rock gas in the continuous compression cylinder of high pressure water (4), gas pressure increases, and when in-cylinder pressure was higher than suction pressure, breather cheek valve (8) was closed, and high-pressure natural gas presses off unidirectional gas outlet valve (9), enters gas holder (5) through air valve (15), (18); After the rock gas in the cylinder (4) all is pressed into gas holder (5), water valve (17), (11), (13), air valve (14) are opened, water valve (12), (16), air valve (15) is closed, high pressure water in the cylinder (4) is pressed in the cylinder (3) through water valve (17), (11), water pump (2), water valve (13), gas outlet valve this moment (9) cuts out, and suction valve (8) is opened air-breathing automatically, thereby finishes a circulation; At last after gas holder (5) is full of high-pressure natural gas, by the outward transport of air valve (19) input high-pressure natural gas container truck.
2. recovery retail natural gas device of implementing the technological method of the described recovery retail natural gas of claim 1, form by water tank, high-pressure water pump, cylinder, gas holder, air valve and water valve, it is characterized in that: water tank (1) is with pipeline and high-pressure water pump (2), link to each other bottom cylinder (3) or (4) again, cylinder (3) or (4) bottom link to each other with high-pressure water pump (2) inlet again, form water-flow circuit, the each several part pipeline is equipped with high pressure water valve (10), (11), (12), (13), (16), (17); Cylinder (3) or (4) top have air intake and air outlet, breather cheek valve (6), (8) and unidirectional gas outlet valve (7), (9) are housed respectively, the air outlet is connected with gas holder (5) with pipeline, be connected with High-pressure air valve (14), (15), (18) in the each several part pipeline, gas holder (5) air outlet is equipped with air valve (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100443610A CN101280883A (en) | 2008-05-06 | 2008-05-06 | Technological process recycling retail natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100443610A CN101280883A (en) | 2008-05-06 | 2008-05-06 | Technological process recycling retail natural gas |
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| Publication Number | Publication Date |
|---|---|
| CN101280883A true CN101280883A (en) | 2008-10-08 |
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ID=40013483
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100443610A Pending CN101280883A (en) | 2008-05-06 | 2008-05-06 | Technological process recycling retail natural gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155605A (en) * | 2011-01-27 | 2011-08-17 | 田伟臣 | Natural gas recycling device |
| CN110672385A (en) * | 2018-07-02 | 2020-01-10 | 中国石油天然气股份有限公司 | Natural gas pressurizing and sampling device and method |
| CN111255423A (en) * | 2020-03-11 | 2020-06-09 | 长沙宁湖机械设备有限公司 | Multi-mode oil well natural gas recovery device |
-
2008
- 2008-05-06 CN CNA2008100443610A patent/CN101280883A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155605A (en) * | 2011-01-27 | 2011-08-17 | 田伟臣 | Natural gas recycling device |
| CN110672385A (en) * | 2018-07-02 | 2020-01-10 | 中国石油天然气股份有限公司 | Natural gas pressurizing and sampling device and method |
| CN111255423A (en) * | 2020-03-11 | 2020-06-09 | 长沙宁湖机械设备有限公司 | Multi-mode oil well natural gas recovery device |
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Open date: 20081008 |