CN105861025A - Recovery device and method for liquid-state light hydrocarbon in gas pipeline - Google Patents
Recovery device and method for liquid-state light hydrocarbon in gas pipeline Download PDFInfo
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- CN105861025A CN105861025A CN201610390795.0A CN201610390795A CN105861025A CN 105861025 A CN105861025 A CN 105861025A CN 201610390795 A CN201610390795 A CN 201610390795A CN 105861025 A CN105861025 A CN 105861025A
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- storage tank
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G5/00—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
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- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
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- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to a recovery device and method for liquid-state light hydrocarbon in a gas pipeline. The device comprises a low-pressure storage tank, a high-pressure blow-off pipe, a gas emission branch A, a gas emission branch B and a liquid header, wherein a pressure detector and a liquid level detector are installed on the low-pressure storage tank; the high-pressure blow-off pipe is connected into the low-pressure storage tank from one end of the top of the low-pressure storage tank, and an emergency intercepting valve A is arranged on the high-pressure blow-off pipe; an inlet of the gas emission branch A and an inlet of the gas emission branch B are connected into the low-pressure storage tank from the top of the low-pressure storage tank, an outlet of the gas emission branch A and an outlet of the gas emission branch B are gathered into a gas emission header, and the gas emission header is connected into a station blowdown system; an inlet of the liquid header is connected with one end of the bottom of the low-pressure storage tank, and an outlet of the liquid header is connected with a liquid discharge branch A and a liquid discharge branch. According to the method, a mixture is discharged to the low-pressure storage tank through the high-pressure blow-off pipe, liquid is left, redundant gas is emitted, and then the liquid in the low-pressure storage tank is recovered through a tank truck for recycling. Through the method and device, safety running of the gas pipeline is guaranteed, and environmental pollution is prevented.
Description
Technical field
The present invention relates to a kind of retracting device and the method for gas pipeline liquid light hydrocarbon.
Background technology
The oil gas field ground gas handling system of Gas Pipeline Project upstream, often has leakage, lost efficacy and even damage
Bad situation, causes liquid light hydrocarbon to enter pipeline, the conveying gas pipeline containing liquid light hydrocarbon with gas
Operationally, particularly when blowdown process, usually because there being the reason of liquid light hydrocarbon in gas, occur
Serious security incident serious environment pollution.
Summary of the invention
For ensureing the well head gas containing liquid light hydrocarbon safety in conduit running, particularly ensure appendix
Road changes the safety in the discharge process such as core, maintenance at pigging operation, filter, reduces and pollutes environment, this
The purpose of invention is to provide retracting device and the method for a kind of gas pipeline liquid light hydrocarbon.
It is an object of the invention to be achieved through the following technical solutions:
A kind of retracting device of gas pipeline liquid light hydrocarbon, including:
Low pressure storage tank, described low pressure storage tank is separately installed with pressure detector and liquid level detector, described
Liquid is had in low pressure storage tank；
High pressure blow-off pipe, described high pressure blow-off pipe accesses described low pressure storage tank from one end, top of low pressure storage tank,
The outlet of described high pressure blow-off pipe reaches bottom described low pressure storage tank, and below the liquid level that submerges, described high pressure
Blow-off pipe is provided with urgent block valve A；
Gas bleeder A and gas bleeder B, described gas bleeder A and gas discharge
The import of pipe B accesses described low pressure storage tank, described gas bleeder A respectively from the top of low pressure storage tank
Being provided with relief valve, described gas bleeder B is sequentially provided with ball valve and gate valve, described gas discharges
Arm A and gas bleeder B accumulates gas discharge manifold in its exit, and the discharge of described gas is total
Pipe accesses yard blowdown system, and described gas discharge manifold is provided with automobile return-air interface；
Liquid header, described liquid header is provided with draining valve, the import of described liquid header and low pressure
The bottom end of storage tank connects, the outlet of described liquid header connected drainage arm A and drain branch pipe respectively
B, the outlet of described drain branch pipe A is provided with snap joint A, described drain branch pipe B and connects dredge pump,
And the exit of described drain branch pipe B is provided with snap joint B.
Further, the top of described low pressure storage tank is provided with manhole.
Further, before described high pressure blow-off pipe, connection has receiving ball tube or filter or separator or the gas that converges
Pipe.
Further, the liquid one that the liquid having in described low pressure storage tank is discharged with described high pressure blow-off pipe
Cause.
Further, described low pressure storage tank is airtight.
Further, described pressure detector is chain with described urgent block valve A.
Further, described gas discharge manifold is got on the car and is provided with ball valve before return-air interface.
Further, described gas bleeder A is provided with ball valve before relief valve.
Further, on described gas bleeder A import before gas discharge manifold with described relief valve
Between be provided with ball valve.
Further, described drain branch pipe A and drain branch pipe B is respectively equipped with arm valve.
Further, the arm valve on described drain branch pipe A is gate valve.
Further, described drain branch pipe B is equipped with arm valve before and after described dredge pump.
Further, described high pressure blow-off pipe is provided with EMER emergency block valve B.
The retracting device using described gas pipeline liquid light hydrocarbon carries out the recovery method of liquid light hydrocarbon, bag
Include following steps:
Step 1, through receiving ball tube or filter or separator or converge the gas of trachea and the mixture of liquid
Entering high pressure blow-off pipe, described mixture enters low pressure storage tank, low pressure storage tank internal memory by high pressure blow-off pipe
There is liquid, and the outlet of described high pressure blow-off pipe reaches bottom described low pressure storage tank, and below the liquid level that submerges；
Step 2, the pressure in described pressure detector monitoring low pressure storage tank, when described pressure exceedes relief valve
During setting value, described mixture continues to enter low pressure storage tank by high pressure blow-off pipe, and opens gas discharge
Relief valve on arm A, is discharged into yard blowdown system by gas by gas bleeder A；Work as institute
State pressure to continue to raise, when exceeding the alarm for high voltage value of setting, turn off urgent block valve, and open described
Arm valve on relief valve and gas bleeder B, by gas respectively by gas bleeder A and
Gas bleeder B is discharged into yard blowdown system；
Step 3, liquid level in described liquid level detector monitoring low pressure storage tank, by liquid header drain,
When described liquid level exceedes the low liquid level warning value of setting, close draining valve, stop discharge opeing.
Further, in step 3, utilize the pressure in low pressure storage tank, by drain branch pipe A by low pressure
Storage pot liquid is discharged.
Further, in step 3, when described pressure exceedes the low pressure alarming value of setting, start blowdown
Pump, is discharged liquid in low pressure storage tank by drain branch pipe B.
The invention have the benefit that
Device of the present invention is by receiving ball tube, filter, separator or the high pressure blow-off pipe of remittance trachea
Gas-liquid mixture is discharged into airtight low pressure storage tank, leaves liquid, drain unnecessary gas, then by vapour
Car tank car reclaims the liquid of low pressure storage tank, recycling, it is ensured that the safe operation of gas pipeline, prevents dirt
Dye environment.
Accompanying drawing explanation
Fig. 1 is the perspective view of the retracting device of gas pipeline liquid light hydrocarbon of the present invention；
Fig. 2 is that described in the embodiment of the present invention 1, the planar structure of the retracting device of gas pipeline liquid light hydrocarbon is shown
It is intended to；
Wherein, 1-urgent block valve A, 2-low pressure storage tank, 3-manhole, 4-relief valve, 5-dredge pump, 6-
Drain branch pipe A, 7-high pressure blow-off pipe, 8-drain branch pipe B, 9-liquid header, 10-snap joint A, 11-
Snap joint B, 12-gas discharge pipe A, 13-gas bleeder B, 14-EMER emergency block valve B,
15-gas discharge manifold.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and
Embodiment, is further elaborated to the present invention.Should be appreciated that described herein being embodied as
Example only in order to explain the present invention, is not intended to limit the present invention.
A kind of retracting device of gas pipeline liquid light hydrocarbon, including:
Low pressure storage tank 2, described low pressure storage tank 2 is airtight, and described low pressure storage tank 2 is separately installed with pressure
Force detector and liquid level detector, the top of described low pressure storage tank 2 is provided with manhole 3, described low pressure storage tank 2
Inside there is liquid, consistent with the liquid that described high pressure blow-off pipe 7 is discharged；The volume of low pressure storage tank 2 is at least
Can accommodate a yard blowdown flow rate, conventional volume is 5m3, 10m3, 20m3, according to the size of yard
And type selecting, generally, 5m is selected at small-sized point of defeated station3, large-scale point of defeated station or pigging station select 10m3,
Compressor station selects 20m3。
High pressure blow-off pipe 7, described high pressure blow-off pipe 7 accesses described low pressure from one end, top of low pressure storage tank 2
Storage tank 2, the outlet of described high pressure blow-off pipe 7 reaches bottom described low pressure storage tank 2, and below the liquid level that submerges,
Ensureing that the liquid of high pressure blow-off pipe 7 is not taken away by gas, described high pressure blow-off pipe 7 is provided with and promptly blocks
Valve A1, described pressure detector is chain with described urgent block valve A1, when described pressure exceedes setting
During alarm for high voltage value, turn off urgent block valve, it is ensured that low pressure storage tank 2 not superpressure, safe operation.
Gas bleeder A12 and gas bleeder B13, described gas bleeder A12 and gas
The import of bleeder B13 accesses described low pressure storage tank 2, described gas respectively from the top of low pressure storage tank 2
Body bleeder A12 is provided with relief valve 4, described gas bleeder B13 is sequentially provided with ball valve and
Gate valve, described gas bleeder A12 and gas bleeder B13 accumulates gas row in its exit
Putting house steward 15, described gas discharge manifold 15 accesses yard blowdown system, described gas discharge manifold 15
It is provided with automobile return-air interface；
Liquid header 9, described liquid header 9 is provided with draining valve, the import of described liquid header 9 with
The bottom end of low pressure storage tank 2 connects, the outlet of described liquid header 9 connected drainage arm A6 respectively and
Drain branch pipe B8, described drain branch pipe A6 and drain branch pipe B8 is respectively equipped with arm valve, described row
The outlet of liquid arm A6 is provided with snap joint A10, described drain branch pipe B8 and connects dredge pump 5, and institute
The exit stating drain branch pipe B8 is provided with snap joint B11, described snap joint A10 and snap joint
B11 connects truck tank respectively, and wherein said snap joint A10 is used as water filling and notes ammonia mouth.
Connect before described high pressure blow-off pipe 7 and have receiving ball tube or filter or separator or the trachea that converges.
Preferably, described high pressure blow-off pipe 7 is provided with EMER emergency block valve B14.Described gas discharges
House steward 15 gets on the car and is provided with ball valve before return-air interface.Set before relief valve 4 on described gas bleeder A12
There is ball valve.On described gas bleeder A12 import before gas discharge manifold 15 with described relief valve 4
Between be provided with ball valve.It is respectively equipped with arm valve on described drain branch pipe A6 and drain branch pipe B8.Described
Arm valve on drain branch pipe A6 is gate valve.On described drain branch pipe B8 before described dredge pump 5
After be equipped with arm valve.
The retracting device using described gas pipeline liquid light hydrocarbon carries out the recovery method of liquid light hydrocarbon, bag
Include following steps:
Step 1, through receiving ball tube or filter or separator or converge the gas of trachea and the mixture of liquid
Entering high pressure blow-off pipe, described mixture enters low pressure storage tank, low pressure storage tank internal memory by high pressure blow-off pipe
There is liquid, and the outlet of described high pressure blow-off pipe reaches bottom described low pressure storage tank, and below the liquid level that submerges；
Step 2, the pressure in described pressure detector monitoring low pressure storage tank, when described pressure exceedes relief valve
During setting value, described mixture continues to enter low pressure storage tank by high pressure blow-off pipe, and opens gas discharge
Relief valve on arm A, is discharged into yard blowdown system by gas by gas bleeder A；Work as institute
State pressure to continue to raise, when exceeding the alarm for high voltage value of setting, turn off urgent block valve, and open described
Arm valve on relief valve and gas bleeder B, by gas respectively by gas bleeder A and
Gas bleeder B is discharged into yard blowdown system；
Step 3, liquid level in described liquid level detector monitoring low pressure storage tank, by liquid header drain,
When described liquid level exceedes the low liquid level warning value of setting, close draining valve, stop discharge opeing.Discharge
Liquid, hauls with truck tank, recycling.
Wherein, in step 3, utilize the pressure in low pressure storage tank, do not start dredge pump, propped up by discharge opeing
Liquid in low pressure storage tank is discharged by pipe A；Or when described pressure exceedes the low pressure alarming value of setting, start
Dredge pump, is discharged liquid in low pressure storage tank by drain branch pipe B.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for this
For the technical staff in field, the present invention can have various modifications and variations.All spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. the retracting device of a gas pipeline liquid light hydrocarbon, it is characterised in that including:
Low pressure storage tank (2), described low pressure storage tank (2) is separately installed with pressure detector and
Liquid level detector, described low pressure storage tank has liquid in (2)；
High pressure blow-off pipe (7), described high pressure blow-off pipe (7) is from the top of low pressure storage tank (2)
Described low pressure storage tank (2) is accessed in one end, and the outlet of described high pressure blow-off pipe (7) reaches described
Low pressure storage tank (2) bottom, and below the liquid level that submerges, described high pressure blow-off pipe (7) is provided with
Urgent block valve A (1)；
Gas bleeder A (12) and gas bleeder B (13), described gas discharges
The import of arm A (12) and gas bleeder B (13) is respectively from low pressure storage tank (2)
Top access described low pressure storage tank (2), described gas bleeder A (12) is provided with peace
Full valve (4), described gas bleeder B (13) is provided with arm valve, and described gas is arranged
Put arm A (12) and gas bleeder B (13) and accumulate gas discharge in its exit
House steward (15), described gas discharge manifold (15) accesses yard blowdown system, described gas
Discharge manifold (15) is provided with automobile return-air interface；
Liquid header (9), described liquid header (9) is provided with draining valve, described discharge opeing
The import of house steward (9) is connected with the bottom end of low pressure storage tank (2), described liquid header (9)
Outlet respectively connected drainage arm A (6) and drain branch pipe B (8), described drain branch pipe
The outlet of A (6) is provided with snap joint A (10), and described drain branch pipe B (8) connects blowdown
Pump (5), and the exit of described drain branch pipe B (8) is provided with snap joint B (11).
The retracting device of gas pipeline liquid light hydrocarbon the most according to claim 1, it is special
Levying and be, the top of described low pressure storage tank (2) is provided with manhole (3).
The retracting device of gas pipeline liquid light hydrocarbon the most according to claim 1, it is special
Levying and be, the front connection of described high pressure blow-off pipe (7) has receiving ball tube or filter or separator
Or remittance trachea.
The retracting device of gas pipeline liquid light hydrocarbon the most according to claim 1, it is special
Levying and be, the liquid having in described low pressure storage tank (2) is arranged with described high pressure blow-off pipe (7)
The liquid gone out is consistent.
The retracting device of gas pipeline liquid light hydrocarbon the most according to claim 1, it is special
Levying and be, described low pressure storage tank (2) is airtight.
The retracting device of gas pipeline liquid light hydrocarbon the most according to claim 1, it is special
Levy and be, described drain branch pipe A (6) and drain branch pipe B (8) are respectively equipped with manifold valve
Door.
The retracting device of gas pipeline liquid light hydrocarbon the most according to claim 1, it is special
Levying and be, described high pressure blow-off pipe (7) is provided with EMER emergency block valve B (14).
8. the recovery using the gas pipeline liquid light hydrocarbon described in any of the above-described claim fills
Put the recovery method carrying out liquid light hydrocarbon, it is characterised in that comprise the following steps:
Step 1, through receiving ball tube or filter or separator or converge the gas of trachea and liquid
Mixture enter high pressure blow-off pipe, described mixture enters low pressure storage tank by high pressure blow-off pipe,
There is liquid in low pressure storage tank, and the outlet of described high pressure blow-off pipe reaches at the bottom of described low pressure storage tank
Below portion, and the liquid level that submerges；
Step 2, the pressure in described pressure detector monitoring low pressure storage tank, when described pressure surpasses
When crossing safety valve setting value, described mixture continues to enter low pressure storage tank by high pressure blow-off pipe,
And open the relief valve on gas bleeder A, gas is arranged by gas bleeder A
It is put into yard blowdown system；When described pressure continues to raise, when exceeding the alarm for high voltage value of setting,
Turn off urgent block valve, and open the manifold valve on described relief valve and gas bleeder B
Door, is discharged into yard by gas bleeder A and gas bleeder B respectively by gas
Blowdown system；
Step 3, liquid level in described liquid level detector monitoring low pressure storage tank, arranged by liquid header
Go out liquid, when described liquid level exceedes the low liquid level warning value of setting, close draining valve, stop
Only discharge opeing.
The recovery method of liquid light hydrocarbon the most according to claim 8, it is characterised in that
In step 3, utilize the pressure in low pressure storage tank, by drain branch pipe A by low pressure storage tank
Liquid is discharged.
The recovery method of liquid light hydrocarbon the most according to claim 8, it is characterised in that
In step 3, when described pressure exceedes the low pressure alarming value of setting, start dredge pump, pass through
Liquid in low pressure storage tank is discharged by drain branch pipe B.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610390795.0A CN105861025B (en) | 2016-06-02 | 2016-06-02 | The retracting device and method of a kind of gas pipeline liquid light hydrocarbon |
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| CN201610390795.0A CN105861025B (en) | 2016-06-02 | 2016-06-02 | The retracting device and method of a kind of gas pipeline liquid light hydrocarbon |
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| CN105861025B CN105861025B (en) | 2017-07-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759779A (en) * | 2017-03-29 | 2017-05-31 | 中国石油天然气集团公司 | A kind of online blowdown apparatus and online method for discharging pollution for being applied to gas pipeline yard |
| CN106838618A (en) * | 2017-03-29 | 2017-06-13 | 中国石油天然气集团公司 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
| CN111720738A (en) * | 2020-06-08 | 2020-09-29 | 中国神华煤制油化工有限公司 | Chemical device waste liquid collecting system and collecting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759779A (en) * | 2017-03-29 | 2017-05-31 | 中国石油天然气集团公司 | A kind of online blowdown apparatus and online method for discharging pollution for being applied to gas pipeline yard |
| CN106838618A (en) * | 2017-03-29 | 2017-06-13 | 中国石油天然气集团公司 | A kind of on-line automatic blowdown apparatus of gas pipeline yard |
| CN106759779B (en) * | 2017-03-29 | 2019-01-29 | 中国石油天然气集团公司 | A kind of online blowdown apparatus and online method for discharging pollution applied to gas pipeline yard |
| CN111720738A (en) * | 2020-06-08 | 2020-09-29 | 中国神华煤制油化工有限公司 | Chemical device waste liquid collecting system and collecting method |
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| Publication number | Publication date |
|---|---|
| CN105861025B (en) | 2017-07-18 |
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Effective date of registration: 20170627 Address after: 100120 Beijing Xicheng District six laying Kang Applicant after: China National Petroleum Corp. Applicant after: China Petroleum Pipeline Engineering Co.,Ltd. Applicant after: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Applicant before: China National Petroleum Corp. Applicant before: CHINA PETROLEUM PIPELINE BUREAU Applicant before: CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Petroleum Pipeline Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Co-patentee after: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100120 Xicheng District six paw Kang in Beijing City Co-patentee before: China Petroleum Pipeline Engineering Co.,Ltd. Patentee before: China National Petroleum Corp. Co-patentee before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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Effective date of registration: 20190711 Address after: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Petroleum Pipeline Engineering Co.,Ltd. Patentee after: CHINA NATIONAL PETROLEUM Corp. Co-patentee after: CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Dongzhimen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Petroleum Pipeline Engineering Co.,Ltd. Patentee before: CHINA NATIONAL PETROLEUM Corp. Co-patentee before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |