CN108970249A - A kind of natural gas gas-liquid separation device and process based on axial flow cyclone pipe - Google Patents
A kind of natural gas gas-liquid separation device and process based on axial flow cyclone pipe Download PDFInfo
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- CN108970249A CN108970249A CN201810977717.XA CN201810977717A CN108970249A CN 108970249 A CN108970249 A CN 108970249A CN 201810977717 A CN201810977717 A CN 201810977717A CN 108970249 A CN108970249 A CN 108970249A
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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
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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
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
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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
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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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
- B01D45/12—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
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- 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
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/24—Hydrocarbons
- B01D2256/245—Methane
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Abstract
The invention belongs to natural gas purification pretreatment stage gas and liquid separation technology fields, are related to a kind of natural gas gas-liquid separation device based on axial flow cyclone pipe, including housing system and Separate System of Water-jet.Wherein, Separate System of Water-jet is installed on inside housing system, including silk screen demisting pad, upper backup pad, 19 axial flow cyclone pipes, lower supporting plates, upper backup pad is coaxially installed between upper cover and axial flow cyclone pipe package cavity, lower supporting plate is coaxially installed between gas-liquid current stabilization chamber and axial flow cyclone pipe package cavity, and silk screen demisting pad is coaxially installed on inside upper cover, and between upper manhole and exhaust pipe, and a small sircle hole is opened up in upper backup pad edge, and connect with downspout.The invention also discloses the process for using above-mentioned apparatus to carry out wet gas pre-dehydration, the device of the invention and process can realize efficient, low-resistance, adaptable advantage.
Description
Technical field
The present invention relates to a kind of natural gas pre-dehydration devices, and in particular to a kind of natural gas gas based on axial flow cyclone pipe
Liquid separating apparatus and process belong to natural gas purification pretreatment stage gas and liquid separation technology field.
Background technique
Natural gas as generally acknowledged high-quality and efficient clean energy resource, have unit calorific value is high, exhaust pollution is small, supply can
It leans on, low-cost feature, the carbon dioxide and nitrogen oxides of discharge respectively may be about the 50% and 20% of coal, sulfur dioxide
Discharge amount is almost nil；In addition, natural gas is also used as valuable industrial chemicals, nearly thousand kinds of chemical products can be produced.Therefore,
The use for promoting natural gas, can not only promote the quality of the life of the mankind, can also promote industrial expansion, to promotion ecological environment
Construction and city Transformation upgrading are of great significance.
With advances in technology and demand of the international community to natural gas energy resource, the construction of natural gas fields by land to underwater,
By shallow water to deep water.The construction of natural gas fields is generally accompanied by natural gas condensate and water, and natural gas condensate and water are in natural gas
It not only will form hydrate in transmission process, cause the blocking of pipe-line system, reduce pipeline transmission capacity, cause unnecessary
Power consumption.And contact and easily formed with corrosive acid solution with sour gas such as carbon dioxide in natural or hydrogen sulfide,
Cause the corrosion of pipe-line equipment, increases flowing security risk, the especially conveying of long range tieback or standpipe tieback deep level
Platform, on the other hand may during Shipping liquefied natural gas solid-state hydrate impulse high voltage storage tank, generate electrostatic,
Bring serious security risk.If in addition, into offshore platform compressor natural gas containing the liquid such as a large amount of water floodings, can be to pressure
The longtime running of contracting machine generates strong influence.Mineral salt in the gas reservoir of underground can be dissolved under conditions of ground end high temperature and pressure
Water flooding, after gas reservoir development, natural gas is constantly moved to pit shaft from hole, is dissolved with the high mine of mineral salt in the process
Change degree water carries out ground by natural gas, if surface technology flow sheet equipment except liquid it is inefficient, will lead to a small amount of free water with
Natural gas enters compressor, and during multi-stage compression, gas temperature is increased, and moisture constantly evaporates under the high temperature conditions, with
The reduction of moisture, reach hypersaturated state dissolved with the aqueous solution of mineral salt, final mineral salt is precipitated with crystalline solid, is attached to
The impeller surface of compressor drum forms salt crust, and irregular distribution is presented, and destroys the dynamic equilibrium state of compressor,
Bias occurs, it is eccentric increasingly severe as the more poly- salt crust the more, since the vibration that bias generates is higher and higher, eventually lead to
Compressor is shut down, and normal production is seriously affected.
To improve the service life of equipment, the conveying capacity of pipeline and the safety of entire oil-gas gathering and transportation system, therefore
It is of great significance to the high-efficiency dehydration of natural gas.Currently used gas dehydration processing method includes adsorption separation method, cold
Solidifying partition method and oil-absorption process.Traditional separator has condenser pipe, vortex tube, whizzer, throttle valve, electrostatic separation
Device etc..Apparatus above there are many deficiencies place, such as invest it is high, it is complicated for operation, and separative efficiency is not in many cases
Requirement can be reached.If in addition, separator height is big, and offshore platform is multideck structure, if device height is greater than its layer
Between height then need aperture above deck, can thus destroy the original mechanical structure of platform, influence entire platform safety make
Industry, therefore, offshore platform have very strict requirement to the height of dehydration device, and higher tower equipment is difficult at sea
Platform is applied.
For producing the less gas field of water, can be then delivered to flat by injecting the hydrate inhibitors such as ethylene glycol under water
Platform carries out natural gas gas-liquid separation processing.But for High water cut gas field, not only hydrate inhibitor demand is big, costly, and
Discharge pressure can also be greatly increased, cause pressure to produce the flow production in gas field, shut-in pressure it is high even can not flow production etc. no
Benefit influences.Therefore, High water cut gas field is needed to be separated under water.The gas production and gas liquid ratio of deep water natural gas field exist
It can constantly be fluctuated during development and production, and degree of fluctuation is bigger, conventional separator is difficult to open in natural gas field
It is attained by and efficiently separates in the whole life cycle of hair.Currently, some separators are separated suitable for containing large amount of liquid, in liquid phase ratio
Will there are problems that low separation efficiency in the case where less；The problem of having, is suitable for low operating condition containing liquid and efficiently separates, in liquid phase
Often there is the problems such as broken liquid phase, entrainment in more situation, it is low so as to cause separative efficiency.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the shortage of prior art, provide a kind of efficient, low-resistance, adaptability
A kind of strong natural gas gas-liquid separation device and process based on axial flow cyclone pipe.
It is a kind of natural gas gas-liquid based on axial flow cyclone pipe point that the present invention, which solves the scheme that its technical problem is taken,
It include: housing system and Separate System of Water-jet from device.
The housing system includes exhaust pipe, upper cover, upper manhole cover, upper manhole, axial flow cyclone pipe package cavity, current stabilization
It is grid, gas-liquid current stabilization chamber, lower manhole, servant's port lid, lower head, 3 support columns, drain pipe, aspiration pump, downcomer outlet port, wet
Gas inlet pipe, downspout, valve, vortex shield, upper cover, axial flow cyclone pipe package cavity, gas-liquid current stabilization chamber and lower head
Flange coaxial is passed sequentially through to be connected；Exhaust pipe is welded in upper cover center；Upper manhole is placed in upper cover cylindrical sides,
And it is sealed with manhole cover；Vortex shield is welded at drain pipe nozzle, and drain pipe is welded in lower head center；Lower manhole
Lower head cylindrical sides are placed in, and are sealed with servant's port lid；3 support columns are arranged circumferentially outside lower head ellipsoid
Side, central axis and lower head centerline axis parallel；Wet gas inlet tube enters centre bit from gas-liquid current stabilization chamber side
It sets, current stabilization grid is placed in above wet gas inlet tube, and it is intracavitary to be coaxially installed on gas-liquid current stabilization；Downspout is from axial flow cyclone
Pipe package cavity side is drawn, and controls opening and closing degree by valve between aspiration pump, and downcomer outlet port connect and draws with aspiration pump
Enter to lower head.
The internal diameter of the axial flow cyclone pipe is in 100~150mm, highly in 1000~2000mm, including latasuture drain section,
Main segregation section, 2 vane sections, second level guide vane, interstage section, level-one guide vane, entrance, latasuture drain section, main segregation section, guide vane
Section, interstage section, vane section and entrance are sequentially connected, and level-one guide vane is coaxially installed on lower part vane section middle position, and second level is led
Leaf is installed on top vane section middle position, and latasuture drain section top is designed in reverse frustoconic wall surface, and latasuture drain pars infrasegmentalis is in
The design of falling cylindrical wall, latasuture and latasuture drain section inner cylindrical wall face are tangent.It, can edge when liquid film flow to latasuture drain section
Latasuture is discharged rapidly, and unlikely from latasuture drain section pipe under barrier effect of the latasuture drain section top in reverse frustoconic wall surface
Mouth injection avoids the crushing behavior of liquid film from reducing separative efficiency.
The Separate System of Water-jet is installed on inside housing system, including silk screen demisting pad, upper backup pad, 19 axial-flow type
Tornadotron, lower supporting plate, upper backup pad are coaxially installed between upper cover and axial flow cyclone pipe package cavity, and blending bolt is solid
It is fixed；Lower supporting plate is coaxially installed between gas-liquid current stabilization chamber and axial flow cyclone pipe package cavity, and blending bolt is fixed；Silk screen removes
Mist pad is coaxially installed on inside upper cover, and between upper manhole and exhaust pipe；Upper backup pad is uniformly opened outward by center
If 19 circular holes, circular hole size is consistent with axial flow cyclone pipe outside diameter, and the overall alignment shape of 19 circular holes is in regular hexagon；
Lower supporting plate is uniformly opened up 19 circular holes by center outward, and circular hole has boss, projection width and axial flow cyclone tube wall
Consistency of thickness, boss outer circle size is consistent with axial flow cyclone pipe outside diameter, and the overall alignment shape of 19 circular holes is in regular hexagon,
Realize the entrance tolerance otherness of every axial flow cyclone pipe below 10% to greatest extent；Entrance is respectively placed in lower supporting plate
19 circular holes in, main segregation section is respectively placed in 19 circular holes of upper backup pad；In addition, being opened up in upper backup pad edge
One small sircle hole, and connect with downspout.
The present invention also provides a kind of processes of natural gas gas-liquid separation device based on axial flow cyclone pipe, including
Following steps:
(1) wet gas of containing large amount of liquid enters housing system through wet gas inlet tube, is passing through wet gas inlet tube
Elbow, using inertial separation principle, a part of biggish drop of partial size is hit wet natural by self inertia in wet gas
Gas inlet tube elbow tube wall, is captured down, and realizes separation；Drop is constantly assembled, and manages in wet gas inlet tube elbow
Wall forms liquid film and flows into lower head bottom along wall surface.
(2) after step (1), wet gas enters housing system, utilizes gravitational settling in the outlet of wet gas inlet tube
Separation principle further separates the drop in wet gas, and drop directly imports lower head bottom at this time.
(3) after step (2), for wet gas under the action of gas-liquid current stabilization chamber and current stabilization grid, flow behavior tends to be equal
It is even, guarantee that wet gas enters the entrance tolerance otherness of root axial flow cyclone pipe 10% hereinafter, not according to total air inflow
Together, the superficial gas velocity of axial flow cyclone pipe operation can be between 4~18m/s, and wet gas enters after axial flow cyclone pipe,
First level-one guide vane make rotation effect under, separate partial size using centrifuge separation principle and be greater than 17 μm of drop, in rotation
The wet gas risen passes through second level guide vane, and the residual strength for the eddy flow field that second level guide vane makes full use of level-one guide vane to generate continues
Stronger eddy flow field is formed, the separation to 5 μm of partial size of micron order drop is realized in main segregation section, in the process
The larger pressure loss will not be generated.
(4) most drops are separated from wet gas after step (3), are trapped by axial flow cyclone pipe, in axis stream
Formula tornadotron wall surface forms liquid film, and liquid film flows into lower head along axial flow cyclone tube wall downwards, is finally discharged through drain pipe.
(5) when larger by the superficial gas velocity in axial flow cyclone pipe, forming liquid film in axial flow cyclone tube wall face can
Lower head can not can be flowed into downwards all along axial flow cyclone tube wall, at this moment liquid film can be arranged from the latasuture in latasuture drain section
Axial-flow type tornadotron flows into upper backup pad out, and accumulation is discharged into lower head through downspout afterwards to a certain extent, finally arranges through drain pipe
Out, clean dry gas flows into downstream process equipment through exhaust pipe.
(6) when process amount is small, lead to, the eddy flow field of formation smaller by the superficial gas velocity in axial flow cyclone pipe
Intensity is weaker, carries out air suction process using downspout and aspiration pump at this time, increases wet gas in axial flow cyclone pipe
Circulation, and then increase the superficial gas velocity in axial flow cyclone pipe, stronger eddy flow field is formed, realization efficiently separates.
Compared with prior art, the present invention has the beneficial effects that
(1) present invention uses axial flow cyclone pipe for main gas liquid separation element, using fluid self-energy as power source,
The equipment operation energy consumption during wet gas gas-liquid separation is greatly reduced, and separating property significantly increases, experimental data
Show to separate 5 μm of micron order drop, the pressure loss is within several hundred pas, the superficial gas velocity of axial flow cyclone pipe operation
Between 4~18m/s, the operating flexibility of wide aperture is really realized, adaptability for working condition is extremely strong, and the internal diameter of axial flow cyclone pipe exists
100~150mm, easy to process highly in 1000~2000mm, low cost.
(2) inventive shell system is easily installed disassembly, is facilitated the maintenance of whole device using segmentation flanged joint, is dropped
Low-maintenance cost, shortens the construction period.
(3) present invention is using downspout and aspiration pump, it can be achieved that the superficial gas velocity of axial flow cyclone pipe operation is not by oil gas
The limitation of field wet gas quantum of output realizes the superficial gas velocity that the operation of axial flow cyclone pipe is artificially adjusted according to water capacity, simultaneously
It is again unlikely to generate larger energy consumption.
(4) present invention is using upper backup pad and the fixed axial-flow type tornadotron of lower supporting plate, it can be achieved that the axial-flow type to damage
Tornadotron carries out lossless replacement, the mobility and flexibility of whole device is greatly strengthened, using the piping mode of regular hexagon
Realize the entrance tolerance otherness of every axial flow cyclone pipe below 10% to greatest extent.
(5) reliable, adaptability for working condition is strong, efficient low-resistance superior separating property with running smoothly for whole device.Without fortune
Dynamic component, structure is simple, is not necessarily to power device long-term operation, and the structure design of the close-coupled is played in narrow space
Online processing is carried out to natural gas on offshore platform, the effect of fast eliminating impurity and liquid can satisfy the skies such as offshore platform
Between be limited the pre-processing requirements of occasion natural gas can be efficiently from natural gas without adding any chemicals in operational process
In isolate moisture and hydrocarbon liquids, energy conservation and environmental protection reduces operating cost, it can be achieved that unmanned automatic operating, non-maintaining,
It can be used on remote or bad environments land or offshore platform.
Detailed description of the invention
Fig. 1 is a kind of isometric test chart of natural gas gas-liquid separation device based on axial flow cyclone pipe
Fig. 2 is a kind of natural gas gas-liquid separation device cross-sectional view based on axial flow cyclone pipe
Fig. 3 is lower head top view
Fig. 4 is current stabilization grid top view
Fig. 5 is lower supporting plate top view
Fig. 6 is A-A diagrammatic cross-section in Fig. 5
Fig. 7 is upper backup pad top view
Fig. 8 is axial flow cyclone pipe cross-sectional view
Fig. 9 is axial flow cyclone pipe top view
Figure 10 is latasuture drain section cross-sectional view
Figure 11 is B-B diagrammatic cross-section in Figure 10
Figure 12 is vane section cross-sectional view
Figure 13 is interstage section cross-sectional view
Figure 14 is main segregation section cross-sectional view
Figure 15 is entrance
Figure 16 is the isometric test chart of level-one guide vane
Figure 17 is second level guide vane isometric view
In figure, 1, exhaust pipe, 2, upper cover, 3, silk screen demisting pad, 4, upper manhole cover, 5, upper manhole, 6, upper backup pad, 7,
Axial flow cyclone pipe package cavity, 8, axial flow cyclone pipe, 9, lower supporting plate, 10, current stabilization grid, 11, gas-liquid current stabilization chamber, 12, under
Manhole, 13, servant's port lid, 14, lower head, 15, support column, 16, drain pipe, 17, aspiration pump, 18, downcomer outlet port, 19, wet
Gas inlet pipe, 20, downspout, 21, valve, 22, vortex shield, 23, latasuture drain section, 24, main segregation section, 25, guide vane
Section, 26, second level guide vane, 27, interstage section, 28, level-one guide vane, 29, entrance, 30, latasuture.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art without making creative work it is obtained it is all its
Its embodiment, shall fall within the protection scope of the present invention.
Fig. 1~17 are highly preferred embodiment of the present invention, and 1~16 the present invention will be further described with reference to the accompanying drawing.
Referring to attached drawing 1~17: a kind of natural gas gas-liquid separation device based on axial flow cyclone pipe, comprising: housing system
And Separate System of Water-jet.
The housing system includes exhaust pipe 1, upper cover 2, upper manhole cover 4, upper manhole 5, axial flow cyclone pipe package cavity
7, current stabilization grid 10, gas-liquid current stabilization chamber 11, lower manhole 12, servant's port lid 13,14,3 support columns 15 of lower head, drain pipe 16,
Aspiration pump 17, downcomer outlet port 18, wet gas inlet tube 19, downspout 20, valve 21, vortex shield 22, upper cover 2, axis stream
Formula tornadotron package cavity 7, gas-liquid current stabilization chamber 11 pass sequentially through flange coaxial with lower head 14 and are connected；Exhaust pipe 1 is welded in envelope
First 2 center；Upper manhole 5 is placed in 2 cylindrical sides of upper cover, and is sealed with manhole cover 4；22 row of being welded in of vortex shield
At 16 nozzle of liquid pipe, drain pipe 16 is welded in 14 center of lower head；Lower manhole 12 is placed in 14 cylindrical sides of lower head,
And it is sealed with servant's port lid 4；3 support columns 15 are arranged circumferentially on the outside of 14 ellipsoid of lower head, central axis and lower envelope
First 14 centerline axis parallel；Wet gas inlet tube 19 enters center, current stabilization grid 10 from 11 side of gas-liquid current stabilization chamber
It is placed in 19 top of wet gas inlet tube, and is coaxially installed in gas-liquid current stabilization chamber 11；Downspout 20 is sealed from axial flow cyclone pipe
It behave affectedly the extraction of 7 sides, opening and closing degree is controlled by valve 21 between aspiration pump 17, downcomer outlet port 18 and aspiration pump 17 connect
It connects and is introduced in lower head 14.
The axial flow cyclone pipe 8 include latasuture drain section 23,24,2 vane sections 25 of main segregation section, second level guide vane 26,
Interstage section 27, level-one guide vane 28, entrance 29, latasuture drain section 23, main segregation section 24, vane section 25, interstage section 27, guide vane
Section 25 and entrance 29 are sequentially connected, and level-one guide vane 28 is coaxially installed on 25 middle position of lower part vane section, and second level guide vane 26 is pacified
Loaded on 25 middle position of top vane section.23 top of latasuture drain section is designed in reverse frustoconic wall surface, 23 lower part of latasuture drain section
In the design of falling cylindrical wall, latasuture 30 and 23 inner cylindrical wall face of latasuture drain section are tangent, when liquid film flow to latasuture drain section 23
When, it can be discharged rapidly along latasuture 30, and unlikely from side under barrier effect of 23 top of latasuture drain section in reverse frustoconic wall surface
The injection of 23 nozzle of drain section is stitched, the crushing behavior of liquid film is avoided to reduce separative efficiency.
The Separate System of Water-jet is installed on inside housing system, including 6,19 silk screen demisting pad 3, upper backup pad axis streams
Formula tornadotron 8, lower supporting plate 9, upper backup pad 6 are coaxially installed between upper cover 2 and axial flow cyclone pipe package cavity 7, are used in combination
Bolt is fixed；Lower supporting plate 9 is coaxially installed between gas-liquid current stabilization chamber 11 and axial flow cyclone pipe package cavity 7, and blending bolt is solid
It is fixed；Silk screen demisting pad 3 is coaxially installed on inside upper cover 2, and between upper manhole 5 and exhaust pipe 1；Upper backup pad 6 is in
The heart uniformly opens up 19 circular holes outward, and circular hole size is consistent with 8 outer diameter of axial flow cyclone pipe, the overall alignment of 19 circular holes
Shape is in regular hexagon；Lower supporting plate 9 is uniformly opened up 19 circular holes by center outward, and circular hole has a boss, projection width with
8 pipe thickness of axial flow cyclone pipe is consistent, and boss outer circle size is consistent with 8 outer diameter of axial flow cyclone pipe, the entirety of 19 circular holes
Arranging shape is in regular hexagon, realizes the entrance tolerance otherness of every axial flow cyclone pipe below 10% to greatest extent；Enter
Mouth section 29 is respectively placed in 19 circular holes of lower supporting plate 9, and main segregation section 24 is respectively placed in 19 circular holes of upper backup pad 6；
In addition, opening up a small sircle hole in 6 edge of upper backup pad, and it is connect with downspout 20.
A kind of natural gas gas-liquid separation device based on axial flow cyclone pipe provided in based on the above embodiment, the present invention
Additionally provide a kind of process of natural gas gas-liquid separation device based on axial flow cyclone pipe, comprising the following steps:
(1) wet gas of containing large amount of liquid enters housing system through wet gas inlet tube 19, is passing through wet gas entrance
19 elbow of pipe, using inertial separation principle, a part of biggish drop of partial size is hit wet by self inertia in wet gas
19 elbow tube wall of gas inlet pipe, is captured down, and realizes separation；Drop is constantly assembled, in wet gas inlet tube 19
Elbow tube wall forms liquid film and flows into 14 bottom of lower head along wall surface.
(2) after step (1), wet gas enters housing system, heavy using gravity in the outlet of wet gas inlet tube 19
Drop separation principle further separates the drop in wet gas, and drop directly imports 14 bottom of lower head at this time.
(3) after step (2), under the action of gas-liquid current stabilization chamber 11 and current stabilization grid 10, flow behavior becomes wet gas
In uniform, guarantee wet gas enter the entrance tolerance otherness of 19 axial flow cyclone pipes 8 10% hereinafter, according to always into
Tolerance is different, and the superficial gas velocity that axial flow cyclone pipe 8 is run can be between 4~18m/s, and wet gas enters axial flow cyclone
After pipe 8, first level-one guide vane 28 make rotation effect under, separate partial size greater than 17 μm using centrifuge separation principle
Drop rotates the wet gas of rising by second level guide vane 26, the eddy flow that second level guide vane 26 makes full use of level-one guide vane 28 to generate
The residual strength of field continuously forms stronger eddy flow field, and the micron order drop to 5 μm of partial size is realized in main segregation section 24
Separation, the larger pressure loss will not be generated in the process.
(4) most drops are separated from wet gas after step (3), are trapped by axial flow cyclone pipe 8, in axis stream
8 wall surface of formula tornadotron forms liquid film, and liquid film flows downwardly into lower head 14 along 8 wall surface of axial flow cyclone pipe, finally through drain pipe 16
Discharge.
(5) when larger by the superficial gas velocity in axial flow cyclone pipe 8, liquid film is formed in 8 wall surface of axial flow cyclone pipe
Possibly lower head 14 can not be flowed downwardly into all along 8 wall surface of axial flow cyclone pipe, at this moment liquid film can be from latasuture drain section 23
Latasuture 30 is discharged axial flow cyclone pipe and flows into upper backup pad 6, and accumulation is discharged into lower head 14 through downspout 20 afterwards to a certain extent,
It is finally discharged through drain pipe 16, clean dry gas flows into downstream process equipment through exhaust pipe 1.
(6) when process amount is small, lead to, the eddy flow of formation smaller by the superficial gas velocity in axial flow cyclone pipe 8
Field intensity is weaker, carries out air suction process using downspout 20 and aspiration pump 17 at this time, increases wet gas in axial flow cyclone
Circulation in pipe 8, and then increase the superficial gas velocity in axial flow cyclone pipe 8, stronger eddy flow field is formed, realizes and efficiently divides
From.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention
Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these change and change
Into all fall within the protetion scope of the claimed invention.
Claims (5)
1. a kind of natural gas gas-liquid separation device based on axial flow cyclone pipe, it is characterised in that: including housing system and gas-liquid
Separation system.
2. a kind of natural gas gas-liquid separation device based on axial flow cyclone pipe according to claim 1, it is characterised in that:
Housing system includes that exhaust pipe, upper cover, upper manhole cover, upper manhole, axial flow cyclone pipe package cavity, current stabilization grid, gas-liquid are steady
Flow chamber, lower manhole, servant's port lid, lower head, 3 support columns, drain pipe, aspiration pump, downcomer outlet port, wet gas entrance
Pipe, downspout, valve, vortex shield, upper cover, axial flow cyclone pipe package cavity, gas-liquid current stabilization chamber and lower head pass sequentially through method
It is blue coaxial connected；Exhaust pipe is welded in upper cover center；Upper manhole is placed in upper cover cylindrical sides, and uses manhole cover
Sealing；Vortex shield is welded at drain pipe nozzle, and drain pipe is welded in lower head center；Lower manhole is placed in lower head cylinder
Body side surface, and sealed with servant's port lid；3 support columns are arranged circumferentially on the outside of lower head ellipsoid, and central axis is under
End socket centerline axis parallel；Wet gas inlet tube enters center from gas-liquid current stabilization chamber side, and current stabilization grid is placed in wet
Above gas inlet pipe, and it is intracavitary to be coaxially installed on gas-liquid current stabilization；Downspout is drawn from axial flow cyclone pipe package cavity side,
Opening and closing degree is controlled by valve between aspiration pump, downcomer outlet port connect with aspiration pump and is introduced in lower head.
3. a kind of natural gas gas-liquid separation device based on axial flow cyclone pipe according to claim 1, it is characterised in that:
The internal diameter of axial flow cyclone pipe is in 100~150mm, highly in 1000~2000mm, including latasuture drain section, main segregation section, 2
Vane section, second level guide vane, interstage section, level-one guide vane, entrance, latasuture drain section, main segregation section, vane section, interstage section, guide vane
Section and entrance are sequentially connected, and level-one guide vane is coaxially installed on lower part vane section middle position, and second level guide vane is installed on upper guide
Leaf section middle position, latasuture drain section top are designed in reverse frustoconic wall surface, and latasuture drain pars infrasegmentalis is set in cylindrical wall
Meter, latasuture and latasuture drain section inner cylindrical wall face are tangent；When liquid film flow to latasuture drain section, can be discharged rapidly along latasuture, and
It is unlikely under barrier effect of the latasuture drain section top in reverse frustoconic wall surface to be sprayed from latasuture drain section nozzle, avoid liquid film
Crushing behavior reduces separative efficiency.
4. according to claim 1 with a kind of natural gas gas-liquid separation device based on axial flow cyclone pipe as claimed in claim 2,
It is characterized by: the Separate System of Water-jet is installed on inside housing system, including silk screen demisting pad, upper backup pad, 19 axis
Streaming tornadotron, lower supporting plate, upper backup pad are coaxially installed between upper cover and axial flow cyclone pipe package cavity, blending bolt
It is fixed；Lower supporting plate is coaxially installed between gas-liquid current stabilization chamber and axial flow cyclone pipe package cavity, and blending bolt is fixed；Silk screen removes
Mist pad is coaxially installed on inside upper cover, and between upper manhole and exhaust pipe；Upper backup pad is uniformly opened outward by center
If 19 circular holes, circular hole size is consistent with axial flow cyclone pipe outside diameter, and the overall alignment shape of 19 circular holes is in regular hexagon；Under
Support plate is uniformly opened up 19 circular holes by center outward, and circular hole has boss, and projection width and axial flow cyclone tube wall are thick
Degree is consistent, and boss outer circle size is consistent with axial flow cyclone pipe outside diameter, and the overall alignment shape of 19 circular holes is in regular hexagon, most
Limits realize the entrance tolerance otherness of every axial flow cyclone pipe below 10%；Entrance is respectively placed in lower supporting plate
In 19 circular holes, main segregation section is respectively placed in 19 circular holes of upper backup pad；In addition, opening up one in upper backup pad edge
Small sircle hole, and connect with downspout.
5. according to claim 1 to a kind of technique side of natural gas gas-liquid separation device based on axial flow cyclone pipe described in 4
Method, comprising the following steps:
(1) wet gas of containing large amount of liquid enters housing system through wet gas inlet tube, is passing through wet gas entrance pipe bend
Place, using inertial separation principle, a part of biggish drop of partial size hits wet gas and enters by self inertia in wet gas
Tube wall at mouth pipe bend, is captured down, and realizes separation；Drop is constantly assembled, in wet gas inlet tube elbow tube wall shape
Lower head bottom is flowed into along wall surface at liquid film；
(2) after step (1), wet gas enters housing system, utilizes gravity settling separation in the outlet of wet gas inlet tube
Principle further separates the drop in wet gas, and drop directly imports lower head bottom at this time；
(3) after step (2), under the action of gas-liquid current stabilization chamber and current stabilization grid, flow behavior tends to uniformly, protect wet gas
Card wet gas enters the entrance tolerance otherness of root axial flow cyclone pipe 10% hereinafter, axis stream different according to total air inflow
The superficial gas velocity of formula tornadotron operation can be between 4~18m/s, and wet gas enters after axial flow cyclone pipe, first one
Grade guide vane is made under rotation effect, separates the drop that partial size is greater than 17 μm using centrifuge separation principle, rotates the wet day of rising
Right gas passes through second level guide vane, and the residual strength for the eddy flow field that second level guide vane makes full use of level-one guide vane to generate, which continuously forms, more to be reinforced
Strong eddy flow field is realized to the separation of 5 μm of partial size of micron order drop in main segregation section, will not be generated in the process larger
The pressure loss；
(4) most drops are separated from wet gas after step (3), are trapped by axial flow cyclone pipe, are revolved in axial-flow type
Air hose wall surface forms liquid film, and liquid film flows into lower head along axial flow cyclone tube wall downwards, is finally discharged through drain pipe；
(5) when larger by the superficial gas velocity in axial flow cyclone pipe, forming liquid film in axial flow cyclone tube wall face may nothing
Method flows into lower head all along axial flow cyclone tube wall downwards, and at this moment axis stream can be discharged from the latasuture in latasuture drain section in liquid film
Formula tornadotron flows into upper backup pad, and accumulation is discharged into lower head through downspout afterwards to a certain extent, is finally discharged through drain pipe, clean
Dry gas flow into downstream process equipment through exhaust pipe；
(6) when process amount is small, lead to, the eddy flow field intensity of formation smaller by the superficial gas velocity in axial flow cyclone pipe
It is weaker, air suction process is carried out using downspout and aspiration pump at this time, increases circulation of the wet gas in axial flow cyclone pipe
Amount, and then increase the superficial gas velocity in axial flow cyclone pipe, stronger eddy flow field is formed, realization efficiently separates.
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| CN114053816A (en) * | 2021-11-26 | 2022-02-18 | 江苏永诚装备科技有限公司 | Centrifugal multi-stage natural gas separator |
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