CN104445681B - Spiral three-phase medium separator - Google Patents

Spiral three-phase medium separator Download PDF

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Publication number
CN104445681B
CN104445681B CN201410658938.2A CN201410658938A CN104445681B CN 104445681 B CN104445681 B CN 104445681B CN 201410658938 A CN201410658938 A CN 201410658938A CN 104445681 B CN104445681 B CN 104445681B
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straight length
flow path
cone
helical flow
formula
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CN104445681A (en
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蒋明虎
赵立新
李永山
李枫
张勇
徐保蕊
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Northeast Petroleum University
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Northeast Petroleum University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/38Treatment of water, waste water, or sewage by centrifugal separation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/20Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities

Abstract

A kind of spiral three-phase medium separator.Main purpose is, for field produces provides a kind of equipment that synchronously can carry out degassed desanding process to Produced Liquid, to alleviate separation equipment weight, improves the economic benefit of oilfield exploitation.It is characterized in that: have the first helical flow path at the first straight length internal fixtion, run through overflow pipe, there are some first micropores at lower 1/3 place of overflow pipe; In the first straight length, have baffle, the horn mouth back-off of baffle is fixed on the central authorities of the first helical flow path, and escape pipe has identical central axis with overflow pipe; The second helical flow path and discharging tube is had in the second straight length; Some the second micropores running through body are had in the stage casing of discharging tube; In outer cone section, had filter cone, be built-in with the 3rd helical flow path, have some 3rd micropores at lower 1/3 place crossing filter cone at mistake filter cone, the 3rd micropore is vertical with the wall of described filter cone excessively; The head end of the bottom and discharging tube of crossing filter cone is connected.

Description

Spiral three-phase medium separator
Technical field
The present invention relates to a kind of multiphase medium separating and treating apparatus be applied in the fields such as oil, chemical industry, ocean engineering, water treatment and environmental protection.
Background technology
Along with deepening continuously of the numerous oil field development of China, Produced Liquid sand content, association tolerance increase year by year.The a large amount of of Produced Liquid can cause great infringement to ground collection transfer device containing sand, gassiness, and degasification, desanding are indispensable.It is several that the desanding device that current oil field is applied mainly contains gravitational settling, filtration desanding, centrifugal desanding and cyclone desanding etc.Wherein, gravitational settling (tank) belongs to Gravity Separation method, is utilize density contrast to be separated.Shortcoming is that floor space is large, is suitable for land environment, the occasion that space is enough large; Filter (screen cloth) desanding and have efficient feature, but need backwash, occupation area of equipment is large, is suitable for sand content less, the occasions such as sand grains particle diameter is little; Centrifugation is by means of centrifugal force, and the material making proportion different carries out the method be separated.Because the equipment such as centrifuge can produce quite high angular speed, make centrifugal force much larger than gravity, so the suspension in solution is convenient to Precipitation: the centrifugal force again suffered by the different material of proportion is different, thus sinking speed is different, and the different material of proportion can be made to reach separation; Cyclonic separation forms according to centrifugal sedimentation and density difference principle design, make to produce centrifugal force field in it, according to the effect of the density contrast between object and centrifugal force, thus reach the effect of separation, cyclonic separation has the advantages such as equipment volume is little, but current existing cyclonic separation equipment is limited for the removal ability of fine oil droplets and particle, is also not suitable for and is separated the Produced Liquid containing impurity such as a large amount of associated gases, silt particles.
The separation of associated gas then mainly contains the several methods such as absorption process, active carbon adsorption, membrane separation process.Absorption is usually used in the disposal and recovery of gas pollutant; The concentration etc. of the size of its solubility, surface free energy, polarity, adsorption molecule and degree of unsaturation, attached matter is depended in charcoal absorption; UF membrane is under pressure-driven, and by the adsorption capacity of component each in gas on polymeric membrane surface and the difference in film in dissolving-diffusion, namely infiltration rate difference carries out being separated, and equipment cost is higher, requires comparatively strict again to ambient condition.The impurity such as a large amount of associated gases, silt particle are all contained in the Produced Liquid in the most of oil field of current China, these impurity not only can build-up of pressure unstable, increase conveying difficulty, also can cause the burn into blocking etc. of equipment, there is many potential safety hazards, very large harm is caused to field produces.Therefore, the degassed desanding process of Produced Liquid also becomes a major issue in field produces.The efficient separation equipment that can realize three-phase medium of many good characteristics such as being therefore badly in need of reasonable in design, volume is little, function is many, manpower demand is few, be easy to operate, to reduce system energy consumption, effectively solves Produced Liquid containing sand gassiness to the impact of gathering system.
Summary of the invention
In order to solve the technical problem mentioned in background technology, the invention provides a kind of spiral three-phase medium separator, this kind of cyclone separator arrangement is simple, synchronously can carry out the efficient degassing desanding to Produced Liquid, alleviate separation equipment weight, improve the economic benefit of oilfield exploitation.
Technical scheme of the present invention is: this kind of spiral three-phase medium separator, comprise the first straight length connected successively, outer cone section and the second straight length, the diameter of the first straight length is greater than the diameter of the second straight length, the bottom lock of the second straight length, a tangential access sediment outflow pipe on the excircle of the second straight length, middle part in the first straight length is fixed with the first helical flow path, the overflow pipe that one runs through described first helical flow path is in the axial direction fixedly connected with in the central authorities of the first helical flow path, the head of overflow pipe, tail two ends all lean out outside described first helical flow path, have some the first micropores running through body at the lower 1/3 pipeline section place of overflow pipe, the pore diameter range of described first micropore is between 5 microns ~ 10 microns.
Top in the first straight length, there is one in trumpet-shaped baffle, described baffle forms after being connected with escape pipe by horn mouth, and the horn mouth back-off of described baffle is fixed on the central authorities of the first helical flow path, and escape pipe has identical central axis with overflow pipe.
Bottom in first straight length is eddy flow chamber, and the tail end of overflow pipe is positioned at eddy flow chamber; Middle part in the second straight length is fixed with the second helical flow path, is fixedly connected with in the central authorities of the second helical flow path the discharging tube that runs through described second helical flow path in the axial direction, and the tail end opening of discharging tube leans out the bottom lock end of the second straight length; Have some the second micropores running through body in the stage casing of discharging tube, the pore diameter range of described second micropore is between 10 microns ~ 15 microns.
What in outer cone section, have one to match with its taper crosses filter cone, is built-in with the 3rd helical flow path crossing filter cone, and have some 3rd micropores crossing lower 1/3 place of filter cone, the 3rd micropore is vertical with the cone wall of described mistake filter cone; The pore diameter range of described 3rd micropore is between 30 microns ~ 50 microns; The bottom of outer cone section is connected with the head end of discharging tube.
The present invention has following beneficial effect: first, and this kind of spiral three-phase medium separator adopts helical flow path entrance structure, and the equipment radial dimension of making reduces further, and floor space is little; Secondly, can be used for the do not dissolve each other integration of medium of the different three-phase of density and be separated, both can be applicable to field produces, and can be applicable to other fields such as municipal and environment-friendly again; Again, many helical flow path structures taked by this separator, can make repeatedly centrifugation to occur in separator, further improve separative efficiency.In addition, this kind of separator also can be applicable in pipe string of oil field downhole, can realize solution-air-liquid and be separated with liquid-liquid-solid three-phase medium that waits.Put it briefly, this kind of separator is the latest scientific research of being subsidized by National 863 plan problem (2012AA061303), the open problem of the special Funded Projects of China's post-doctors science fund (2014T70191) and key lab of the raising rate of oil and gas recovery Ministry of Education and being completed, a kind of equipment synchronously carrying out the degassed desanding process of Produced Liquid can be provided for field produces, alleviate separation equipment weight, improve the economic benefit of oilfield exploitation, in the oil field produced liquor treating process of simplification, there is profound significance, have wide future in engineering applications.
accompanying drawing illustrates:
Fig. 1 is surface structure schematic diagram of the present invention.
Fig. 2 is sectional structure schematic diagram of the present invention.
Fig. 3 is the structural representation after the first helical flow path of the present invention is connected with overflow pipe.
Fig. 4 is the sectional structure schematic diagram that the present invention has indicated each setup parameter.
1-escape pipe in figure, 2-first straight length, 3-first helical flow path, 4-overflow pipe, 5-eddy flow chamber, 6-outer cone section, 7-crosses filter cone, 8-the 3rd helical flow path, 9-the 3rd micropore, 10-discharging tube, 11-second helical flow path, 12-second straight length, 13-second micropore, 14-sediment outflow pipe, 15-first micropore.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the invention will be further described:
Shown in Fig. 1 composition graphs 2, this kind of spiral three-phase medium separator, comprise the first straight length 2, outer cone section 6 and the second straight length 12 that connect successively, the diameter of the first straight length 2 is greater than the diameter of the second straight length 12, the bottom lock of the second straight length 12, a tangential access sediment outflow pipe 14 on the excircle of the second straight length 12, in addition:
As shown in Figure 3, middle part in the first straight length 2 is fixed with the first helical flow path 3, be fixedly connected with in the central authorities of the first helical flow path 3 overflow pipe 4 that runs through described first helical flow path in the axial direction, the initial and end two ends of overflow pipe 4 all lean out outside described first helical flow path; Have some the first micropores 15 running through body at the lower 1/3 pipeline section place of overflow pipe 4, the pore diameter range of described first micropore is between 5 microns ~ 10 microns.
Top in the first straight length 2, there is one in trumpet-shaped baffle, described baffle forms after being connected with escape pipe 1 by horn mouth, and the horn mouth back-off of described baffle is fixed on the central authorities of the first helical flow path 3, and escape pipe 1 has identical central axis with overflow pipe 4.
Bottom in first straight length 2 is eddy flow chamber 5, and the tail end of overflow pipe 4 is positioned at eddy flow chamber 5;
The second helical flow path 11 is fixed with in the second straight length 12 inside, be fixedly connected with in the central authorities of the second helical flow path 11 discharging tube 10 that runs through described second helical flow path in the axial direction, the tail end opening of discharging tube 10 leans out the bottom lock end of the second straight length 12; Have some the second micropores 13 running through body in the stage casing of discharging tube 10, the pore diameter range of described second micropore is between 10 microns ~ 15 microns.The structure of the second helical flow path is identical with the structure of the first helical flow path, and just size diminishes.
What in outer cone section 6, have one to match with its taper crosses filter cone 7, the 3rd helical flow path 8 is built-in with at mistake filter cone 7, described 3rd helical flow path and the first helical flow path structurally slightly change, and be a solid construction, the helix of runner outer rim is then unchanged.There are some 3rd micropore the 9, three micropores 9 vertical with the cone wall of described filter cone 7 excessively at lower 1/3 place of mistake filter cone 7; The pore diameter range of described 3rd micropore is between 30 microns ~ 50 microns.The bottom of outer cone section 6 is connected with the head end of discharging tube 10 and becomes the entirety run through.
The above-mentioned part relating to micropore due to aperture very little, boring possibility is little, can directly select poromerics to process from strand, so appropriate section is for carrying micropore.
The primary efficacy of this kind of spiral three-phase medium separator is centrifugation, and its separation principle is separated into example with gas-liquid-solid three-phase and is described, and is utilize the density contrast of three kinds of immiscible liquid media and carry out centrifugation.Gas-liquid-solid mixed liquor enters separator interior by the opening on the first straight length, through the first helical flow path, the rectilinear motion of blending agent is become circular motion, the eddy current of High Rotation Speed is formed in eddy flow chamber and outer cone section, the form of outer cone is adopted to have certain energy compensating effect to the fluid in cyclone, and then the speed loss in compensation separation process, be conducive to the separation of three-phase.
During separator work, mixed material enters in separator by the opening on the first straight length, through the first helical flow path, the rectilinear motion of blending agent is become circular motion, under the effect of density contrast, relies on centrifugal force to complete separation process.Three-phase medium rotates separation at separator, first three-phase medium rotates in the first helical flow path, overflow pipe 4 wall in it has micropore, because density of gas phase is the lightest, overflow pipe 4 can be entered by micropore, first discharge sub-fraction by overflow pipe 4, be beneficial to the later separation at separator interior; Micropore design can also prevent solid particle from entering in overflow pipe 4, affects separating effect.Secondly three-phase medium rotates separation in separator, and gas phase the lightest in gas, liquid, solid three-phase is separated at first, and is discharged by top overflow pipe 4; Blending agent is in descending process, proceed rotating separation, under the influence of centrifugal force, solid phase (containing Partial Liquid Phase) shifts to Bian Bichu gradually, enter in the second straight length 12, the second helical flow path 11 can make its internal mix medium (mainly liquid, solid) rotate separation again, and lighter Partial Liquid Phase can enter discharging tube 10 by the second micropore 13, and solid phase and small part liquid phase medium are under the promotion of subsequent medium, finally by lateral row sandpipe 14 drain separator; Liquid then passed through filter cone 7 and then entered in discharging tube 10, the 3rd helical flow path 8 crossed in filter cone 7 can make the blending agent of its inside again rotate separation, the duct that the heavier solid phase of part can pass through the 3rd micropore 9 of filter cone 7 wall enters in underflow pipe 12, further raising solid phase separative efficiency, and filter cone 7 pairs of gases can also produce certain castering action excessively, be beneficial to the discharge of overflow gas, again improve gas phase separation precision.Liquid medium after repeatedly purifying is discharged from discharging tube 10 outlet at bottom, and gas is discharged from top vent pipe, and solid phase is discharged from sediment outflow pipe 14, thus completes the final separation of three-phase.
Provide a preferred embodiment of patent application of the present invention below:
If the diameter of setting the first straight length 2 is D, the diameter of overflow pipe 4 is D 1, discharging tube 10 diameter be D 2, eddy flow chamber 5 height be H, the height of the first helical flow path is H 1, overflow pipe 4 length that stretches into described eddy flow chamber is L, the height of the second straight length 12 is H 2, outer cone section 6 cone angle be α, outer cone section 6 height that is positioned at the part of described separator after being connected with discharging tube 10 is H 3, the second straight length 12 diameter be D 3, then construct described separator according to the limited range as shown in the formula (1) ~ formula (9) and can optimal effectiveness be obtained.
0.1D<D 1<0.5D ... formula (1);
0.2D<D 2<0.7D ... formula (2);
2D<H<5D ... formula (3);
2D<H 1<4D ... formula (4);
0.05H<L<0.5H ... formula (5);
0.5H<H 2<1.2H ... formula (6);
0.5 ° of < α <60 ° ... formula (7);
0.5H<H 3<5H ... formula (8);
0.2D<D 3<0.9D ... formula (9).

Claims (1)

1. a spiral three-phase medium separator, comprise the first straight length (2), outer cone section (6) and the second straight length (12) that connect successively, the diameter of the first straight length (2) is greater than the diameter of the second straight length (12), the bottom lock of the second straight length (12), a tangential access sediment outflow pipe (14) on the excircle of the second straight length (12), is characterized in that:
Middle part in the first straight length (2) is fixed with the first helical flow path (3), be fixedly connected with in the central authorities of the first helical flow path (3) overflow pipe (4) that runs through described first helical flow path (3) in the axial direction, the initial and end two ends of overflow pipe (4) all lean out described first helical flow path (3) outward; Have some the first micropores (15) running through body at the lower 1/3 pipeline section place of overflow pipe (4), the pore diameter range of described first micropore (15) is between 5 microns ~ 10 microns;
Top in the first straight length (2), there is one in trumpet-shaped baffle, described baffle forms after being connected with escape pipe (1) by horn mouth, the horn mouth back-off of described baffle is fixed on the central authorities of the first helical flow path (3), and escape pipe (1) has identical central axis with overflow pipe (4);
Bottom in first straight length (2) is eddy flow chamber (5), and the tail end of overflow pipe (4) is positioned at eddy flow chamber (5);
The second helical flow path (11) is fixed with in the second straight length (12) inside, be fixedly connected with in the central authorities of the second helical flow path (11) discharging tube (10) that runs through described second helical flow path (11) in the axial direction, the tail end opening of discharging tube (10) leans out the bottom lock end of the second straight length (12); Have some the second micropores (13) running through body in the stage casing of discharging tube (10), the pore diameter range of described second micropore (13) is between 10 microns ~ 15 microns;
What in outer cone section (6), have one to match with its taper crosses filter cone (7), the 3rd helical flow path (8) is built-in with in mistake filter cone (7), have some 3rd micropores (9) at lower 1/3 place of mistake filter cone (7), the 3rd micropore (9) is vertical with the cone wall of described filter cone excessively; The pore diameter range of described 3rd micropore (9) is between 30 microns ~ 50 microns; The bottom of outer cone section (6) is connected with the head end of discharging tube (10);
If the diameter of setting the first straight length (2) is D, the diameter of overflow pipe (4) is D 1, discharging tube (10) diameter be D 2, eddy flow chamber (5) height be H, the height of the first helical flow path (3) is H 1, overflow pipe (4) length that stretches into described eddy flow chamber (5) is L, the height of the second straight length (12) is H 2, outer cone section (6) cone angle be α, outer cone section (6) height that is positioned at the part of described separator after being connected with discharging tube (10) is H 3, the second straight length (12) diameter be D 3, then construct described separator according to the limited range as shown in the formula (1) ~ formula (9):
0.1D<D 1<0.5D ... formula (1);
0.2D<D 2<0.7D ... formula (2);
2D<H<5D ... formula (3);
2D<H 1<4D ... formula (4);
0.05H<L<0.5H ... formula (5);
0.5H<H 2<1.2H ... formula (6);
0.5 ° of < α <60 ° ... formula (7);
0.5H<H 3<5H ... formula (8);
0.2D<D 3<0.9D ... formula (9).
CN201410658938.2A 2014-11-19 2014-11-19 Spiral three-phase medium separator Active CN104445681B (en)

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CN112827669A (en) * 2020-12-30 2021-05-25 东北石油大学 Intermittent gas-liquid cyclone separator
CN112827674A (en) * 2020-12-30 2021-05-25 东北石油大学 Reciprocating intermittent type formula cyclone separation device
CN112774879A (en) * 2020-12-30 2021-05-11 东北石油大学 Automatic vertical heterogeneous integration cyclone separation device of paraffin removal
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Publication number Priority date Publication date Assignee Title
US6251296B1 (en) * 1999-07-27 2001-06-26 G.B.D. Corp. Apparatus and method for separating particles from a cyclonic fluid flow
CN101766935B (en) * 2009-01-06 2012-02-15 中国海洋石油总公司 Combined type gas-liquid-solid three phase separation method and device
CN203370342U (en) * 2013-08-02 2014-01-01 上海净博船务有限公司 Vertical type three-phase spiral centrifugal machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6251296B1 (en) * 1999-07-27 2001-06-26 G.B.D. Corp. Apparatus and method for separating particles from a cyclonic fluid flow
CN101766935B (en) * 2009-01-06 2012-02-15 中国海洋石油总公司 Combined type gas-liquid-solid three phase separation method and device
CN203370342U (en) * 2013-08-02 2014-01-01 上海净博船务有限公司 Vertical type three-phase spiral centrifugal machine

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