CN106731248A - A kind of combined type natural gas gas-liquid separation device and method under water - Google Patents
A kind of combined type natural gas gas-liquid separation device and method under water Download PDFInfo
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- CN106731248A CN106731248A CN201710137277.2A CN201710137277A CN106731248A CN 106731248 A CN106731248 A CN 106731248A CN 201710137277 A CN201710137277 A CN 201710137277A CN 106731248 A CN106731248 A CN 106731248A
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- gas
- natural gas
- liquid
- under water
- combined type
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/106—Removal of contaminants of water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
Abstract
The invention discloses a kind of combined type natural gas gas-liquid separation device and method under water, it is characterised in that：It includes air inlet pipeline and multiple separator single tubes, and the port of export of the air inlet pipeline has multiple air intake branch roads；Each separator single tube is separated into exhaust chamber, liquid collecting room, inlet plenum and drainage chamber successively from the top down by the first to the 3rd dividing plate, and is respectively arranged with valve on the first dividing plate and the 3rd dividing plate；The catheter for connecting the liquid collecting room and drainage chamber is provided with the inlet plenum, the eddy flow core pipe for connecting the exhaust chamber and inlet plenum is provided with the liquid collecting room；Each described air intake branch road on the air inlet pipeline is connected with the inlet plenum of each separator single tube.
Description
Technical field
The present invention relates to a kind of natural gas gas-liquid separation equipment and method, more particularly to a kind of combined type natural gas gas under water
Liquid separating apparatus and method.
Background technology
With advances in technology and international community is to the demand of natural gas energy resource, the construction of natural gas fields by land under water,
By shallow water to deep water.The construction of natural gas fields is generally accompanied by NGL and water, and NGL and water are in natural gas
Can cause to flow security risk, the particularly conveying of long range tieback or standpipe tieback deep water platform in course of conveying.For producing
The less gas field of water, can be by injecting the hydrate inhibitors such as ethylene glycol under water, and being then delivered to platform carries out natural gas gas
Liquid separating treatment；For High water cut gas field, not only hydrate inhibitor demand is big, costly, but also can greatly increase conveying
Pressure, causes pressure to produce to the flow production in gas field, and shut-in pressure is high or even cannot the adverse effect such as flow production.Therefore, for
High water cut gas field needs to be separated under water.
Underwater separator will subject very big external pressure relative to land or platform separator, if separator chamber
With land, then wall thickness will be very thick, and not only cost is high for body diameter, but also can bring very big to construction, installation etc.
Inconvenience, causes integrated engineering expense to invest too high.
The content of the invention
Regarding to the issue above, natural gas gas-liquid can be made to efficiently separate under water and process it is an object of the invention to provide one kind
The big natural gas of the combined type under water gas-liquid separation device of amount and method.
To achieve the above object, the present invention uses following technical scheme：A kind of dress of combined type natural gas gas-liquid separation under water
Put, it is characterised in that：It includes air inlet pipeline and multiple separator single tubes, and the port of export of the air inlet pipeline enters with multiple
Gas branch pipe road；Each separator single tube by the first to the 3rd dividing plate be separated into successively from the top down exhaust chamber, liquid collecting room,
Inlet plenum and drainage chamber, and it is respectively arranged with valve on the first dividing plate and the 3rd dividing plate；It is provided with the inlet plenum
For connecting the catheter of the liquid collecting room and drainage chamber, it is provided with the liquid collecting room for connecting the exhaust chamber and entering
The eddy flow core pipe of air chamber；Each described air intake branch road on the air inlet pipeline is entered with described in each separator single tube
Air chamber is connected.
The exhaust chamber of each separator single tube is connected by exhaust branch pipe road with gas exhaust piping, each described point
The drainage chamber from device single tube is connected by drain branch pipe road with drain line.
Multiple air intake branch curb circumferencial directions are distributed in the port of export of the air inlet pipeline, in each air inlet
Control valve is set on bye-pass, and one end of the inlet plenum is stretched into using 0~90 ° of elbow at angle in each air intake branch road,
Towards the lower section of the inlet plenum, using being obliquely installed, the valve is arranged on described the 3rd dividing plate in the elbow direction
Inclination low spot on 3rd dividing plate.
The valve uses check valve.
Setting silk screen in the exhaust chamber of the separator single tube.
The eddy flow core pipe includes conduit and eddy flow mechanism, and the bottom inner portion of the conduit sets the eddy flow mechanism,
It is located on the conduit on the side wall above the eddy flow mechanism and is uniformly arranged a plurality of discharge opeing latasuture.
The eddy flow mechanism includes that deflection cone and the uniform multiple of circumferencial direction along the deflection cone middle part of sliding channel make rotation
Blade.
The conduit includes air inlet section conduit and exhaust section conduit, and the exhaust section conduit diameter is led less than the air inlet section
The diameter of pipe, the air inlet section conduit is socketed in the bottom of the exhaust section conduit.
A diameter of 300~600mm of the separator single tube, is highly 1500~5000mm.
It is present invention also offers a kind of separation method based on combined type natural gas gas-liquid separation device under water including following
Step：
1) gas field natural gas containing liquid enters air inlet pipeline under water, and remote operation opens control valve, and natural gas containing liquid is through air inlet
Bye-pass is diverted to the inlet plenum of multiple separator single tubes, and natural gas containing liquid is in the tube wall of the inlet plenum of separator single tube and the 3rd
Condense out liquid phase on dividing plate, final liquid phase is converged on the 3rd dividing plate and drains into drainage chamber through the valve on the 3rd dividing plate, discharge opeing
Indoor liquid phase converges to drain line and discharges through drain branch pipe road；
2) through step 1) liquid phase that does not separate enters eddy flow core pipe with natural gas, and the liquid phase not separated is making rotation
Liquid collecting room is converged to through discharge opeing latasuture under the centrifugal action of blade, drainage chamber is drained into by catheter, gas phase enters exhaust chamber；
3) a small amount of liquid phase for failing and separating, liquid phase still are coalesced after running into silk screen into the natural gas in exhaust chamber
It is changed into big drop, then drips, the valve when the drop for falling is enough on first dividing plate is opened, liquid phase enters liquid collecting room
Drainage chamber is drained into through catheter, the liquid phase in drainage chamber converges to drain line and discharges by drain branch pipe road；Separator single tube
Exhaust chamber in gas phase converge to gas exhaust piping through exhaust branch pipe road after be transferred to outside.
The present invention uses above technical scheme, and it has the following advantages that：1st, the present invention connects multiple by an air inlet pipeline
Separator single tube, multiple chambers are divided into each separator single tube, and saturated gas sequentially pass through each chamber and carry out gas-liquid separation,
Natural gas gas-liquid can not only be reached to efficiently separate under water, and the treating capacity of natural gas can be improved, it is adaptable to High water cut water
The exploitation in extra large gas field.2nd, the present invention sets control valve on air intake branch road, and one end that inlet plenum is stretched on air intake branch road uses 0
~90 ° of elbow, and elbow is down, the 3rd dividing plate, can be according to gas field gas production size control air inlet pipe using being obliquely installed
The number of the separator single tube of road connection, it is ensured that each separator single tube is in treatment effeciency higher, meanwhile, gas containing liquid enters
Entering inlet plenum can carry out gas-liquid separation under inertia and Action of Gravity Field, can further improve the separative efficiency of gas-liquid.3rd, originally
The valve of invention uses check valve, prevents the backflow phenomenon of gas-liquid from occurring, and silk is set in the exhaust chamber of each separator single tube
Net, can further carry out gas-liquid separation to natural gas, improve the natural gas gas-liquid separation efficiency of whole device.4th, it is of the invention
Eddy flow core pipe includes conduit and eddy flow mechanism, and conduit is divided into air inlet section conduit and exhaust section conduit, and air inlet section conduit is socketed in row
The bottom of gas section conduit, eddy flow mechanism is arranged on the bottom of air inlet section conduit, positioned at the upper of eddy flow mechanism on air inlet section conduit
A plurality of discharge opeing latasuture is set on the side wall of side, through the centrifugation of eddy flow mechanism, the liquid phase isolated is through discharge opeing side for natural gas containing liquid
Seam transfer, gas phase rapidly enters exhaust chamber, can efficiently separate natural gas liquid containing liquid through the conduit of reducing, improves whole device
Separative efficiency.5th, a diameter of 300~600mm of separator single tube of the invention, is highly 1500~5000mm, its low cost,
Install and build convenient, the investment of integrated engineering expense can be reduced.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is eddy flow core pipe cross-sectional view of the invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1 and Figure 2, according to the natural gas gas-liquid separation device of combined type under water proposed by the present invention, it includes air inlet
Pipeline 1 and multiple separator single tubes 2, and the port of export of air inlet pipeline 1 has along the circumferential direction uniform multiple air intake branch roads
11.Each separator single tube 2 is separated into exhaust chamber 21, liquid collecting room 22, the and of inlet plenum 23 successively from the top down by dividing plate 25-27
Drainage chamber 24, and it is respectively arranged with valve 5 on dividing plate 25 and dividing plate 27.It is provided with for connecting liquid collecting in inlet plenum 23
The catheter 6 of room 22 and drainage chamber 24, is provided with the eddy flow core for connecting exhaust chamber 21 and inlet plenum 23 in liquid collecting room 22
Pipe 7.Each air intake branch road 11 on air inlet pipeline 1 is connected with the inlet plenum 23 of each separator single tube 2.
Further, for the natural gas preferably collected after treatment and the liquid isolated, each separator single tube 2
Exhaust chamber 21 is connected by exhaust branch pipe road 31 with gas exhaust piping 3, and the drainage chamber 24 of each separator single tube 2 passes through drain branch pipe
Road 41 is connected with drain line 4.
Further, the control valve 8 by hydraulic control or electric control is set on air intake branch road 11, can be according to day
The quantity of the separator single tube 2 under right gas gas field gas production control working condition, with ensure separator single tube 2 remain at compared with
Treatment effeciency high, so as to ensure the treatment effeciency of whole device.
Further, one end of inlet plenum 23 is stretched into using 0~90 ° of elbow at angle, elbow side in each air intake branch road 11
Use and be obliquely installed to towards the lower section of inlet plenum 23, and dividing plate 27, valve 5 is arranged on the inclination low spot on dividing plate 27.Profit
Gas-liquid separation is carried out into the effect of inertia of inlet plenum 23 and Action of Gravity Field with natural gas containing liquid, the liquid pools in inlet plenum 23 are arrived
The porch of the valve 5 on dividing plate 27, opens the liquid of valve 5 and flows into drainage chamber 24, and gas phase is upwardly into eddy flow core pipe 7 and carries out down
The treatment of one step.
Further, valve 5 uses check valve, and the backflow phenomenon for being prevented from gas-liquid occurs.
Further, the setting silk screen 9 in the exhaust chamber 21 of separator single tube 2, the natural gas into exhaust chamber 21
Still coalescence is changed into big drop after having a small amount of droplet for failing and separating, droplet to run into silk screen, then drips, when falling
Enter liquid collecting room 22 through the valve 5 on dividing plate 25 when the drop for coming is enough, drainage chamber 24 is drained into by catheter 6, realize day
The further gas-liquid separation treatment of right gas.
Further, eddy flow core pipe 7 includes conduit 71 and eddy flow mechanism 72, and the bottom inner portion of conduit 71 sets eddy flow mechanism
72, it is located on conduit 71 and a plurality of discharge opeing latasuture 711 is uniformly arranged on the side wall of the top of eddy flow mechanism 72, natural gas containing liquid is through rotation
The centrifugation of stream mechanism 72, liquid gathers to liquid collecting room 22 through discharge opeing latasuture 711, then drains into drainage chamber 24 through catheter 6.
Further, eddy flow mechanism 72 includes deflection cone a and uniformly many along the circumferencial direction of deflection cone a middle part of sliding channel
It is individual to make vane piece b.
Further, conduit 71 includes air inlet section conduit 712 and exhaust section conduit 713, and the diameter of exhaust section conduit 713 is small
In the diameter of air inlet section conduit 712, air inlet section conduit 712 is socketed in the bottom of exhaust section conduit 713, so sets, from air inlet
The gas flow rate that section conduit 712 enters exhaust section conduit 713 is improved, and then quickening gas is transferred to exhaust chamber 21.
Further, a diameter of 300~600mm of separator single tube 2, is highly 1500~5000mm.
Based on the combined type natural gas gas-liquid separation device provided in above-described embodiment, present invention also offers it is a kind of under water
The separation method of combined type natural gas gas-liquid separation, comprises the following steps：
1) gas field natural gas containing liquid enters air inlet pipeline 1 under water, and remote operation opens control valve 8, and natural gas containing liquid is through entering
Gas branch pipe road 11 is diverted to the inlet plenum 23 of multiple separator single tubes 2, inlet plenum 23 of the natural gas containing liquid in separator single tube 2
Condense out liquid phase on tube wall and dividing plate 27, final liquid phase is converged on dividing plate 27 and drains into drainage chamber through the valve 5 on dividing plate 27
24, the liquid phase in drainage chamber 24 converges to drain line 4 and discharges through drain branch pipe road 41；
2) through step 1) liquid phase that does not separate enters eddy flow core pipe 7 with natural gas, and the liquid phase not separated is being made
Liquid collecting room 22 is converged to through discharge opeing latasuture 711 under the centrifugal action of vane piece a, drainage chamber 24 is drained into by catheter 6, gas phase is entered
Enter exhaust chamber 21；
3) still there is a small amount of liquid phase for failing and separating into the natural gas in exhaust chamber 21, after liquid phase runs into silk screen 9
Coalescence is changed into big drop, then drips, and the valve 5 when the drop for falling is enough on dividing plate 25 is opened, and liquid phase enters collection
Liquid room 22 drains into drainage chamber 24 through catheter 6, and the liquid phase in drainage chamber 24 converges to the row of drain line 4 by drain branch pipe road 41
Go out；Gas phase in the exhaust chamber 21 of separator single tube 2 is transferred to outside after converging to gas exhaust piping 3 through exhaust branch pipe road 31.
The present invention is only illustrated with above-described embodiment, and the structure of each part, set location and its connection all can be have
Changed.On the basis of technical solution of the present invention, all improvement carried out to individual part according to the principle of the invention or equivalent
Conversion, should not exclude outside protection scope of the present invention.
Claims (10)
1. one kind combined type natural gas gas-liquid separation device under water, it is characterised in that：It includes air inlet pipeline and multiple separators
Single tube, and the port of export of the air inlet pipeline has multiple air intake branch roads；Each separator single tube is by first to the
Three dividing plates are separated into exhaust chamber, liquid collecting room, inlet plenum and drainage chamber successively from the top down, and in the first dividing plate and the 3rd dividing plate
On be respectively arranged with valve；The catheter for connecting the liquid collecting room and drainage chamber is provided with the inlet plenum, in institute
State the eddy flow core pipe being provided with liquid collecting room for connecting the exhaust chamber and inlet plenum；It is each described on the air inlet pipeline
Air intake branch road is connected with the inlet plenum of each separator single tube.
2. combined type natural gas gas-liquid separation device under water as claimed in claim 1 a kind of, it is characterised in that：Each described point
The exhaust chamber from device single tube is connected by exhaust branch pipe road with gas exhaust piping, the discharge opeing of each separator single tube
Room is connected by drain branch pipe road with drain line.
3. combined type natural gas gas-liquid separation device under water as claimed in claim 1 or 2 a kind of, it is characterised in that：Multiple institutes
The port of export that air intake branch curb circumferencial direction is distributed in the air inlet pipeline is stated, control is set on each air intake branch road
One end of the inlet plenum is stretched into using 0~90 ° of elbow at angle, the elbow direction court in valve processed, each air intake branch road
To the lower section of the inlet plenum, using being obliquely installed, the valve is arranged on inclining on the 3rd dividing plate to the 3rd dividing plate
Oblique low spot.
4. combined type natural gas gas-liquid separation device under water as claimed in claim 1 a kind of, it is characterised in that：The valve is adopted
Use check valve.
5. combined type natural gas gas-liquid separation device under water as claimed in claim 1 or 2 a kind of, it is characterised in that：Described
Setting silk screen in the exhaust chamber of separator single tube.
6. combined type natural gas gas-liquid separation device under water as claimed in claim 1 a kind of, it is characterised in that：The eddy flow core
Pipe includes conduit and eddy flow mechanism, and the bottom inner portion of the conduit sets the eddy flow mechanism, is located on the conduit described
A plurality of discharge opeing latasuture is uniformly arranged on side wall above eddy flow mechanism.
7. combined type natural gas gas-liquid separation device under water as claimed in claim 7 a kind of, it is characterised in that：The eddy flow machine
Structure includes that deflection cone and the uniform multiple of circumferencial direction along the deflection cone middle part of sliding channel make vane piece.
8. a kind of combined type natural gas gas-liquid separation device under water as claimed in claims 6 or 7, it is characterised in that：It is described to lead
Pipe includes air inlet section conduit and exhaust section conduit, and the exhaust section conduit diameter is less than the diameter of the air inlet section conduit, described
Air inlet section conduit is socketed in the bottom of the exhaust section conduit.
9. combined type natural gas gas-liquid separation device under water as claimed in claim 1 a kind of, it is characterised in that：The separator
A diameter of 300~600mm of single tube, is highly 1500~5000mm.
10. a kind of natural gas gas-liquid separating method of combined type under water based on such as any one of claim 1 to 9 described device, wraps
Include following steps：
1) gas field natural gas containing liquid enters air inlet pipeline under water, and remote operation opens control valve, and natural gas containing liquid is through air intake branch
Road is diverted to the inlet plenum of multiple separator single tubes, tube wall and threeth dividing plate of the natural gas containing liquid in the inlet plenum of separator single tube
On condense out liquid phase, final liquid phase is converged on the 3rd dividing plate and drains into drainage chamber through the valve on the 3rd dividing plate, in drainage chamber
Liquid phase through drain branch pipe road converge to drain line discharge；
2) through step 1) liquid phase that does not separate enters eddy flow core pipe with natural gas, and the liquid phase not separated is making vane piece
Centrifugal action under converge to liquid collecting room through discharge opeing latasuture, drain into drainage chamber by catheter, gas phase enters exhaust chamber；
3) still there is a small amount of liquid phase for failing and separating into the natural gas in exhaust chamber, liquid phase to run into coalesce after silk screen and is changed into
Big drop, is then dripped, and the valve when the drop for falling is enough on first dividing plate is opened, and liquid phase is into liquid collecting room through leading
Liquid pipe drains into drainage chamber, and the liquid phase in drainage chamber converges to drain line and discharges by drain branch pipe road；The row of separator single tube
Gas phase in air chamber is transferred to outside after converging to gas exhaust piping through exhaust branch pipe road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137277.2A CN106731248A (en) | 2017-03-09 | 2017-03-09 | A kind of combined type natural gas gas-liquid separation device and method under water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710137277.2A CN106731248A (en) | 2017-03-09 | 2017-03-09 | A kind of combined type natural gas gas-liquid separation device and method under water |
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| CN106731248A true CN106731248A (en) | 2017-05-31 |
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| CN201710137277.2A Pending CN106731248A (en) | 2017-03-09 | 2017-03-09 | A kind of combined type natural gas gas-liquid separation device and method under water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075623A (en) * | 2019-05-14 | 2019-08-02 | 哈尔滨工程大学 | A kind of fining gas-liquid separator |
| CN111693559A (en) * | 2020-06-22 | 2020-09-22 | 中国核动力研究设计院 | Vapor droplet mass flow separation measuring device and method for gas-phase mixture |
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| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant after: CHINA NATIONAL OFFSHORE OIL Corp. Applicant after: CNOOC RESEARCH INSTITUTE Co.,Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Applicant before: CHINA NATIONAL OFFSHORE OIL Corp. Applicant before: CNOOC Research Institute |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |