CN204798904U - Three -phase separator - Google Patents
Three -phase separator Download PDFInfo
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- CN204798904U CN204798904U CN201520291917.1U CN201520291917U CN204798904U CN 204798904 U CN204798904 U CN 204798904U CN 201520291917 U CN201520291917 U CN 201520291917U CN 204798904 U CN204798904 U CN 204798904U
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- Prior art keywords
- weir plate
- oil
- shell side
- plate
- cylindrical shell
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000000926 separation method Methods 0.000 claims abstract description 23
- 239000004519 grease Substances 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 239000003595 mist Substances 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 239000002775 capsule Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 68
- 239000012071 phase Substances 0.000 abstract description 20
- 239000008346 aqueous phase Substances 0.000 abstract description 4
- 239000010779 crude oil Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000005191 phase separation Methods 0.000 abstract description 2
- 239000012736 aqueous medium Substances 0.000 abstract 1
- 238000005204 segregation Methods 0.000 abstract 1
- 238000003466 welding Methods 0.000 abstract 1
- 235000019198 oils Nutrition 0.000 description 57
- 239000007789 gas Substances 0.000 description 36
- 238000005516 engineering process Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Landscapes
- Separating Particles In Gases By Inertia (AREA)
Abstract
The utility model relates to a three -phase separator, including three -phase separator and inside energy separator, baffle, weir plate, aqueduct, lead oil pipe, catch the fog subassembly, coalescent pack device etc. Three -phase separator be horizontal, be equipped with the lug, both ends welding has the head, adopts the saddle to support. Entry oil gas aqueous medium gets into three -phase separator behind energy separator predissociation further separates, a plurality of shell sides are split into with the separator to the baffle, all carry out oil gas water three -phase separation in each shell side, from top to bottom between two adjacent shell sides respectively through the aqueduct with lead oil pipe and channel into next shell side with aqueous phase and oil phase and proceed alternate segregation. The utility model discloses can solve the big shortcoming of traditional horizontal three -phase separator area, simple structure, separation efficiency height to can realize the automatic continuous separation of crude oil, be fit for land oil gas field and platform oil gas water treatment process and use.
Description
Technical field
The utility model relates to separation technology field, in particular to a kind of three phase separator.
Background technology
From the evolution of petroleum industry, isolation technics is the development of adjoint petroleum industry and constantly improves.Domestic and international isolation technics mainly concentrates on Gravity Separation, centrifugation and collision coalescence and is separated three aspects.Gravity Separation is ripe due to Technical comparing, still occupies an leading position in current actual production.
Through development for many years, kind, the model of three phases separator are on the increase, and separative efficiency also in continuous improvement, but still exists some problems.General three phases separator volume is comparatively large, and especially horizontal-type oil-gas-water triphase floor space is quite large, causes use cost to increase.
Utility model content
The utility model aims to provide a kind of three phase separator, to solve the bulky problem of three phase separator of the prior art.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of three phase separator, comprises end socket, the first weir plate, the second weir plate, cylindrical shell, entrance energy separation device, oil gas water inlet, gas vent, the 3rd weir plate, dividing plate, oil export, the 4th weir plate, water out, aqueduct and oil guide pipe;
The two ends of described cylindrical shell are respectively arranged with end socket, described three phase separator is made to form the capsule shape of sealing, described dividing plate is arranged at described inner barrel and described inner barrel is evenly divided into the upper shell side being positioned at dividing plate top and the lower shell side being positioned at the lower partition, the top of the cylindrical shell of described upper shell side outside is provided with oil gas water inlet and gas vent, and the below of described oil gas water inlet, the inside of upper shell side are provided with entrance energy separation device;
Described first weir plate and the 3rd weir plate are arranged at the two ends being positioned at end socket of dividing plate respectively, described first weir plate and the 3rd weir plate are parallel to each other and the described divider upright of difference, height is arranged between described first weir plate and the 3rd weir plate lower than described second weir plate of described first weir plate and the 3rd weir plate, second weir plate is parallel with the 3rd weir plate with described first weir plate respectively, described first weir plate, the edge perpendicular to dividing plate of the second weir plate and the 3rd weir plate is tightly connected with cylindrical shell respectively, grease chamber is formed between described first weir plate and the second weir plate, mud chamber is formed between described first weir plate and the 3rd weir plate,
One end of described oil guide pipe is arranged on the dividing plate bottom grease chamber, the other end stretches into more than water layer in described lower shell side and oil reservoir, one end of described aqueduct is arranged on the dividing plate between described second weir plate and the 3rd weir plate, and the other end stretches into below water layer in described lower shell side and oil reservoir interface;
Described oil export and water out are arranged at the bottom of the cylindrical shell outside described lower shell side, and described 4th weir plate is arranged between described water out and oil export, and its height stretches into one end of lower shell side lower than oil guide pipe and stretches into one end of lower shell side higher than aqueduct.
The beneficial effects of the utility model are: the utility model structure is simple, easy to operate, function admirable, operating cost are low, separative efficiency is high.This device utilizes shallow pool theory greatly to improve separative efficiency, and the Automatic continuous that can realize crude oil is separated, and is applicable to onshore oil gas field and the use of ocean platform oil gas water treatment technology.
On the basis of technique scheme, the utility model can also do following improvement.
Further, between described oil gas water inlet and gas vent, on be also provided with between the cylindrical shell of shell side outside and dividing plate for oil and gas and water in shell side on carrying out from separation member.
Further, between described aqueduct and described water out, be also provided with between the cylindrical shell of lower shell side outside and dividing plate for carry out oil and gas and water in lower shell side from coalescent pack device.
Further, be also provided with below described gas vent and catch mist assembly for the outlet offseted except mist state gas.
Further, the bottom of the cylindrical shell of described lower shell side outside is also provided with the saddle for supporting cylindrical shell.
Further, described oil guide pipe and aqueduct are also respectively arranged with for regulating the valve rod governor motion importing fluid flow.
Further, described oil export and water out are also respectively arranged with for regulating the control valve of discharging fluid flow.
Further, described water out and oil export are also respectively arranged with the vortex broken device forming vortex for anti-fluid.
Further, the sidewall of described cylindrical shell is equipped with liquid level gauge mouth, thermometer mouth and sample tap.
Further, gauge port and relief valve port are equipped with in described cylindrical shell top.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the utility model better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide further understanding of the present utility model, form a part of the present utility model, schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model, as schemed wherein:
Fig. 1 shows the sectional view according to three phase separator of the present utility model.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
1, end socket; 2, the first weir plate; 3, the second weir plate; 4, cylindrical shell; 5, entrance energy separation device; 6, oil gas water inlet; 7, interior separation member; 8, gas vent; 9, mist assembly is caught in outlet; 10, the 3rd weir plate; 11, dividing plate; 12, oil export; 13, the 4th weir plate; 14, water out; 15, coalescent pack device; 16, aqueduct; 17, saddle; 18, oil guide pipe.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
A kind of three phase separator, comprises end socket 1, first weir plate 2, second weir plate 3, cylindrical shell 4, entrance energy separation device 5, oil gas water inlet 6, gas vent 8, the 3rd weir plate 10, dividing plate 11, oil export 12, the 4th weir plate 13, water out 14, aqueduct 16 and oil guide pipe 18;
The two ends of cylindrical shell 4 are respectively arranged with end socket 1, three phase separator is made to form the capsule shape of sealing, dividing plate 11 is arranged at cylindrical shell 4 inside and cylindrical shell 4 inner homogeneous is divided into the upper shell side being positioned at dividing plate 11 top and the lower shell side being positioned at dividing plate 11 bottom, the top of the cylindrical shell 4 of upper shell side outside is provided with oil gas water inlet 6 and gas vent 8, and the below of oil gas water inlet 6, the inside of upper shell side are provided with entrance energy separation device 5;
First weir plate 2 and the 3rd weir plate 10 are arranged at the two ends being positioned at end socket 1 of dividing plate respectively, first weir plate 2 is parallel to each other with the 3rd weir plate 10 and dividing plate 11 is vertical respectively, height is arranged between the first weir plate 2 and the 3rd weir plate 10 lower than the second weir plate 3 of the first weir plate 2 and the 3rd weir plate 10, second weir plate 3 is parallel with the 3rd weir plate 10 with the first weir plate 2 respectively, first weir plate 2, the edge perpendicular to dividing plate 11 of the second weir plate 3 and the 3rd weir plate 10 is tightly connected with cylindrical shell 4 respectively, grease chamber is formed between first weir plate 2 and the second weir plate 3, mud chamber is formed between first weir plate 2 and the 3rd weir plate 10,
One end of oil guide pipe 18 is arranged on the dividing plate 11 bottom grease chamber, the other end stretches into more than water layer in lower shell side and oil reservoir, one end of aqueduct 16 is arranged on the dividing plate 11 between the second weir plate 3 and the 3rd weir plate 10, and the other end stretches into below water layer in lower shell side and oil reservoir interface;
Oil export 12 and water out 14 are arranged at the bottom of the cylindrical shell 4 outside lower shell side, and the 4th weir plate 13 is arranged between water out 14 and oil export 12, and its height stretches into one end of lower shell side lower than oil guide pipe 18 and stretches into one end of lower shell side higher than aqueduct 16.
Between oil gas water inlet 6 and gas vent 8, on be also provided with between the cylindrical shell 4 of shell side outside and dividing plate 11 for oil and gas and water in shell side on carrying out from separation member 7.
Also be provided with between aqueduct 16 and water out 14, between the cylindrical shell 4 of lower shell side outside and dividing plate 11 for carry out oil and gas and water in lower shell side from coalescent pack device 15.
Also be provided with below gas vent 8 and catch mist assembly 9 for the outlet offseted except mist state gas.
The bottom of the cylindrical shell 4 of lower shell side outside is also provided with the saddle 17 for supporting cylindrical shell 4.
Oil guide pipe 18 and aqueduct 16 are also respectively arranged with for regulating the valve rod governor motion importing fluid flow.
Oil export 12 and water out 14 are also respectively arranged with for regulating the control valve of discharging fluid flow.
Water out 14 and oil export 12 are also respectively arranged with the vortex broken device forming vortex for anti-fluid.
Liquid level gauge mouth, thermometer mouth and sample tap the sidewall of cylindrical shell 4 be equipped with.
Gauge port and relief valve port are equipped with in cylindrical shell 4 top.
In concrete enforcement, horizontal cylindrical body both sides are provided with end socket, and body is divided into multiple shell side by the dividing plate of level by its inside, is all provided with weir plate in each shell side, are mud chamber, hydroecium and grease chamber by compartition; At the shell side of most top layer, the middle part of body is provided with the oil gas water inlet of band energy separation device, is at one end provided with the gaseous phase outlet that mist device caught by band; In the mud chamber of bottom shell side, the bottom of hydroecium and grease chamber is respectively equipped with sewage draining exit, with the delivery port of water control valve and the oil-out with control fuel tap; Between each shell side, be provided with oil guide pipe and aqueduct, the oil phase in the shell side of upper strata and aqueous phase imported respectively grease chamber and the hydroecium of lower floor's shell side.The coalescent pack device carrying out oil, gas, water separation is all installed in each shell side; Liquid level gauge mouth, thermometer mouth and sample tap body sidewall be equipped with; Bodies top is equipped with gauge port and relief valve port; Body bottom portion is provided with saddle.
Oil gas water inlet energy separation device be multilayer Circular Plate composition, by increasing the collision of fluid, the velocity attitude of alter, reduce inlet fluid to the impact energy of cylinder inboard wall.
Oil guide pipe and aqueduct regulate its corresponding flow by the valve rod governor motion in rotary seal chamber, keep the stable of oil reservoir and water layer thickness in each shell side.
There is certain distance between dividing plate and two ends end socket, ensure that gas can freely pass through.
Structure of the present utility model is see Fig. 1, and cylindrical shell is divided into upper and lower two shell sides by dividing plate 11, and each shell side all carries out oil gas water three phase separation.According to shallow pool principle settling height to diminish under identical treating capacity condition can removed hanging drop diameter less, the separative efficiency of equipment is improved.
During work, it is inner that oil water gas medium enters Membrane Separator Cylinder for CFB Boiler 4 by oil gas water inlet 6, falls on dividing plate 11 after entrance energy separation device 5 completes the pre-separation of gas and liquid.Dividing plate 11 is provided with the first weir plate 2, second weir plate 3 and the 3rd weir plate 10.First weir plate 2 and the 3rd weir plate 10 form the mud chamber of upper strata shell side, and oil water mixture aqueous phase after the one-level of upper strata shell side is separated is imported the water layer of lower floor's shell side by aqueduct 16.The oil phase of upper strata shell side climbs over the second weir plate 3 and flows into grease chamber between the first weir plate 2 and the second weir plate 3, and is imported the oil reservoir of lower floor's shell side by oil guide pipe.
The length that aqueduct is stretched for 16 times is below lower floor's shell side water layer and oil reservoir interface, and the length that oil guide pipe is stretched for 18 times, more than lower floor's shell side water layer and oil reservoir interface, can not mix again with the oil phase and aqueous phase that ensure importing lower floor shell side.By regulating the control valve of oil guide pipe 18, aqueduct 16, oil export 12, water out 14, ensureing water layer and the oil reservoir interface location of requirement, and having observed by liquid level gauge.
In each shell side, be all provided with coalescent pack device 15, carry out the separation of oil gas water.Issue at gas vent and outlet is housed catches mist assembly 9, water out and oil export are equipped with vortex broken device.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (14)
1. a three phase separator, it is characterized in that, comprise end socket (1), the first weir plate (2), the second weir plate (3), cylindrical shell (4), entrance energy separation device (5), oil gas water inlet (6), gas vent (8), the 3rd weir plate (10), dividing plate (11), oil export (12), the 4th weir plate (13), water out (14), aqueduct (16) and oil guide pipe (18);
The two ends of described cylindrical shell (4) are respectively arranged with end socket (1), described three phase separator is made to form the capsule shape of sealing, described dividing plate (11) is arranged at described cylindrical shell (4) inside and described cylindrical shell (4) inner homogeneous is divided into the upper shell side being positioned at dividing plate (11) top and the lower shell side being positioned at dividing plate (11) bottom, the top of the cylindrical shell (4) of described upper shell side outside is provided with oil gas water inlet (6) and gas vent (8), the below of described oil gas water inlet (6), the inside of upper shell side is provided with entrance energy separation device (5),
Described first weir plate (2) and the 3rd weir plate (10) are arranged at the two ends being positioned at end socket (1) of dividing plate (11) respectively, described first weir plate (2) is parallel to each other with the 3rd weir plate (10) and described dividing plate (11) is vertical respectively, height is arranged between described first weir plate (2) and the 3rd weir plate (10) lower than described second weir plate (3) of described first weir plate (2) and the 3rd weir plate (10), second weir plate (3) is parallel with the 3rd weir plate (10) with described first weir plate (2) respectively, described first weir plate (2), the edge perpendicular to dividing plate (11) of the second weir plate (3) and the 3rd weir plate (10) is tightly connected with cylindrical shell (4) respectively, grease chamber is formed between described first weir plate (2) and the second weir plate (3), mud chamber is formed between described first weir plate (2) and the 3rd weir plate (10),
One end of described oil guide pipe (18) is arranged on the dividing plate (11) bottom grease chamber, the other end stretches into more than water layer in described lower shell side and oil reservoir, one end of described aqueduct (16) is arranged on the dividing plate (11) between described second weir plate (3) and the 3rd weir plate (10), and the other end stretches into below water layer in described lower shell side and oil reservoir interface;
Described oil export (12) and water out (14) are arranged at the bottom of the cylindrical shell (4) outside described lower shell side, described 4th weir plate (13) is arranged between described water out (14) and oil export (12), and its height stretches into one end of lower shell side lower than oil guide pipe (18) and stretches into one end of lower shell side higher than aqueduct (16).
2. three phase separator according to claim 1, it is characterized in that, be also provided with between described oil gas water inlet (6) and gas vent (8), between the cylindrical shell (4) of upper shell side outside and dividing plate (11) for carry out in upper shell side oil and gas and water from separation member (7).
3. three phase separator according to claim 1, it is characterized in that, be also provided with between described aqueduct (16) and described water out (14), between the cylindrical shell (4) of lower shell side outside and dividing plate (11) for carry out oil and gas and water in lower shell side from coalescent pack device (15).
4. three phase separator according to claim 1, is characterized in that, described gas vent (8) below is also provided with catches mist assembly (9) for the outlet offseted except mist state gas.
5., according to the arbitrary described three phase separator of Claims 1-4, it is characterized in that, the bottom of the cylindrical shell (4) of described lower shell side outside is also provided with the saddle (17) for supporting cylindrical shell (4).
6. according to the arbitrary described three phase separator of Claims 1-4, it is characterized in that, described oil guide pipe (18) and aqueduct (16) are also respectively arranged with for regulating the valve rod governor motion importing fluid flow.
7. according to the arbitrary described three phase separator of Claims 1-4, it is characterized in that, described oil export (12) and water out (14) are also respectively arranged with for regulating the control valve of discharging fluid flow.
8. according to the arbitrary described three phase separator of Claims 1-4, it is characterized in that, described water out (14) and oil export (12) are also respectively arranged with the vortex broken device forming vortex for anti-fluid.
9., according to the arbitrary described three phase separator of Claims 1-4, it is characterized in that, the sidewall of described cylindrical shell (4) is equipped with liquid level gauge mouth, thermometer mouth and sample tap.
10., according to the arbitrary described three phase separator of Claims 1-4, it is characterized in that, gauge port and relief valve port are equipped with in described cylindrical shell (4) top.
11. 1 kinds of three phase separators, is characterized in that,
Comprise cylindrical shell (4) and be arranged on the dividing plate (11) in described cylindrical shell (4), the two ends of described cylindrical shell (4) are respectively arranged with end socket (1), described three phase separator is made to form the capsule shape of sealing, described cylindrical shell (4) inner homogeneous is divided into the upper shell side being positioned at dividing plate (11) top and the lower shell side being positioned at dividing plate (11) bottom by described dividing plate (11), the top of the cylindrical shell (4) of described upper shell side outside is provided with oil gas water inlet (6) and gas vent (8), the bottom of the cylindrical shell (4) outside described lower shell side is provided with oil export (12) and water out (14).
12. three phase separators according to claim 11, is characterized in that, also comprise the entrance energy separation device (5) being arranged on the described below of oil gas water inlet (6), the inside of upper shell side.
13. three phase separators according to claim 11, it is characterized in that, also comprise end socket (1), the first weir plate (2), the second weir plate (3), the 3rd weir plate (10), dividing plate (11), the 4th weir plate (13);
Described first weir plate (2) and the 3rd weir plate (10) are arranged at the two ends being positioned at end socket (1) of dividing plate (11) respectively, described first weir plate (2) is parallel to each other with the 3rd weir plate (10) and described dividing plate (11) is vertical respectively, height is arranged between described first weir plate (2) and the 3rd weir plate (10) lower than described second weir plate (3) of described first weir plate (2) and the 3rd weir plate (10), second weir plate (3) is parallel with the 3rd weir plate (10) with described first weir plate (2) respectively, described first weir plate (2), the edge perpendicular to dividing plate (11) of the second weir plate (3) and the 3rd weir plate (10) is tightly connected with cylindrical shell (4) respectively, grease chamber is formed between described first weir plate (2) and the second weir plate (3), mud chamber is formed between described first weir plate (2) and the 3rd weir plate (10).
14. three phase separators according to claim 13, it is characterized in that, also comprise aqueduct (16) and oil guide pipe (18), one end of described oil guide pipe (18) is arranged on the dividing plate (11) bottom grease chamber, the other end stretches into more than water layer in described lower shell side and oil reservoir, one end of described aqueduct (16) is arranged on the dividing plate (11) between described second weir plate (3) and the 3rd weir plate (10), the other end stretches into below water layer in described lower shell side and oil reservoir interface, described 4th weir plate (13) is arranged between described water out (14) and oil export (12), its height stretches into one end of lower shell side lower than oil guide pipe (18) and stretches into one end of lower shell side higher than aqueduct (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291917.1U CN204798904U (en) | 2014-05-14 | 2015-05-07 | Three -phase separator |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420246695 | 2014-05-14 | ||
| CN201520291917.1U CN204798904U (en) | 2014-05-14 | 2015-05-07 | Three -phase separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204798904U true CN204798904U (en) | 2015-11-25 |
Family
ID=54583797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520291917.1U Expired - Fee Related CN204798904U (en) | 2014-05-14 | 2015-05-07 | Three -phase separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204798904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737466A (en) * | 2017-09-11 | 2018-02-27 | 中石化广州工程有限公司 | A kind of oil gas water horizontal three-phase separator is with oil and gas and water from method |
| CN114482976A (en) * | 2022-02-11 | 2022-05-13 | 西南石油大学 | High-efficiency horizontal three-phase separator |
-
2015
- 2015-05-07 CN CN201520291917.1U patent/CN204798904U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737466A (en) * | 2017-09-11 | 2018-02-27 | 中石化广州工程有限公司 | A kind of oil gas water horizontal three-phase separator is with oil and gas and water from method |
| CN107737466B (en) * | 2017-09-11 | 2019-12-17 | 中石化广州工程有限公司 | Oil-gas-water horizontal three-phase separator and oil-gas-water separation method |
| CN114482976A (en) * | 2022-02-11 | 2022-05-13 | 西南石油大学 | High-efficiency horizontal three-phase separator |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151125 |