CN105597378A - Gas, liquid and light-weight oil triphase separating device - Google Patents
Gas, liquid and light-weight oil triphase separating device Download PDFInfo
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- CN105597378A CN105597378A CN201610157839.5A CN201610157839A CN105597378A CN 105597378 A CN105597378 A CN 105597378A CN 201610157839 A CN201610157839 A CN 201610157839A CN 105597378 A CN105597378 A CN 105597378A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0073—Degasification of liquids by a method not covered by groups B01D19/0005 - B01D19/0042
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
- B01D19/0052—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
Abstract
The invention discloses a gas, liquid and light-weight oil triphase separating device which comprises a triphase separator, a gas-liquid separator, an oil-gas separator and an oil supply pump. The gas, liquid and light-weight oil triphase separating device realizes gas, liquid and light-weight oil triphase separation in steps by virtue of centrifugal force generated by whirl and the density difference between light-weight oil and water. The triphase separator is respectively connected with the gas-liquid separator and the oil supply pump by virtue of pipelines, and the oil supply pump is connected with the oil-gas separator by virtue of a pipeline; then gas enters into the gas-liquid separator, so that small liquid drops entrained in the gas are further separated out; and oil enters into the oil-gas separator, so that small gas bubbles entrained in an oil phase are separated out. The device is high in separation precision; according to actual measurement, more than 90% of gas and 90% of light-weight oil can be separated out, so that multi-phase mixing problem in the industries of oil extraction and gas production is solved.
Description
[technical field]
The present invention relates to the industry gas-liquid separation technical fields such as coal, oil, natural gas, relate in particular to a kind of gas-liquid light oil three-phaseSeparator.
[background technology]
The industry developments such as current domestic Coal Chemical Industry, petrochemical industry and gas chemical industry are rapid, for increasing rapidly of national economy madeHuge contribution. Meanwhile, under the increasingly serious background of current energy resource consumption situation, the stable development of these industries has countryGreat strategic importance. In the production process of these industries, ubiquity the oil of exploiting out and is carried large water gaging secretly and exploit outThe natural gas coming is carried even two-phase or multiphase mixed problem such as heavy oil of a large amount of light oils secretly, and how processing these multiphase mixtures becomes energySource chemical industry develops the problem of having to face. Therefore, two-phase even multi-phase separation technology have wide market. Order on the marketThe separation equipment ubiquity energy consumption of front existence is high, the problem such as manufacturing cost is high, job insecurity, cannot meet derived energy chemical industryProduction requirement.
[summary of the invention]
The multi-phase separation problem existing for solving current derived energy chemical industry, the productivity effect of raising oil, natural gas equal energy source, thisInvention provides a kind of gas-liquid light oil three-phase separating device, this device by eddy flow and density contrast to light oil, gas and water threeCarry out mutually multi-stage separation, will greatly improve the production status of the industry such as oil, natural gas, improve the economic benefit of enterprise.
The technical solution adopted in the present invention is:
A kind of gas-liquid light oil three-phase separating device, comprises three phase separator, gas-liquid separator and gs-oil separator; Described three-phaseSeparator comprises outside cylindrical shell and the three-phase mixture inlet tube of sealing; Described outside cylinder body bottom is upwards provided with overflow cylindrical shell,Top is to being arranged with interior barrel body, and inner cylindrical shell lower end is stretched in overflow cylindrical shell; Described three-phase mixture inlet tube one end is downwardTilt to be communicated with through outside cylindrical shell and with inner cylindrical shell, make oil gas aqueous mixtures tangentially enter inner cylindrical shell and realize eddy flow and divideFrom; Described outside cylindrical shell top is provided with the blast pipe being communicated with inner cylindrical shell, is provided with and overflow cylindrical shell and outer barrel on sidewallThe oil exit pipe that between body, gap is communicated with, bottom is provided with the electric draining valve and the filling pipe that are communicated with overflow cylindrical shell; Described three-phase separateBlast pipe from device is communicated with gas-liquid separator, and the oil exit pipe of three phase separator is by the gas mixture of oil feed pump and gs-oil separatorInlet tube is communicated with.
The center line of described three-phase mixture inlet tube is tangent with circular arc corresponding on inner cylinder inboard wall.
The center line of described three-phase mixture inlet tube and horizontal direction angle are 30 °.
Described inside barrel diameter is 7～8 times of mixture intake pipe diameter.
The upper end of described overflow cylindrical shell be circumferentially provided with ripple overflow plate, between being provided with between ripple overflow plate and outside cylindrical shellGap; The upper surface of described ripple overflow plate is provided with the groove of some proper alignment.
On described outside cylindrical shell, be also provided with the electronic densitometer for monitoring fluid density between overflow cylindrical shell and outside cylindrical shell;Electronic densitometer is connected with electric draining valve by wire.
Described gas-liquid separator top is provided with gas outlet, and sidewall bottom is provided with the gas-liquid mixture import being communicated with blast pipe,Bottom is provided with tapping valve; Gas-liquid separator inner inclination is provided with some separation dividing plates, and adjacent separation dividing plate is crisscross arranged up and down,And each separation dividing plate one end is left gap formation labyrinth type with cylinder inboard wall and is separated dividing plate group.
The top of described separation dividing plate group is provided with separating screen.
Described gs-oil separator inside is provided with the water conservancy diversion funnel being communicated with gas mixture inlet tube, and gs-oil separator top arrangesHave motor, the turning cylinder lower end being connected with motor successively through middle the circular hole of gs-oil separator cylindrical shell end face and water conservancy diversion funnel andSeparator disk connects; Between middle circular hole and turning cylinder, be provided with gap; On the sidewall of described gs-oil separator cylindrical shell, be provided with exhaust outlet,Bottom is provided with draining valve.
The diameter of circular hole in the middle of the diameter of described separator disk is greater than.
With respect to prior art, the present invention has the following advantages:
Device of the present invention makes gas-liquid oil mixture tangentially enter three phase separator, under the effect of eddy flow in overflow cylindrical shellMost of gas is separated, and the effect realization due to density contrast in the cylindrical shell of the inside of separation unit bottoms of water and oil is oily from water meterFace separates. Gas enters gas-liquid separator afterwards, further isolates the droplet of carrying secretly in gas; Oil enters in gs-oil separatorIsolate the minute bubbles of carrying secretly in oil phase. The separation accuracy of this device is high, can isolate through actual measurement the gas and 90% that exceedes 90%Light oil, solved the heterogeneous mixed problem occurring in oil recovery gas production industry; This system pressure loss is little, three-waste free discharge; WorkProcess flow is simple, easy and simple to handle, and operational reliability is high and with low cost.
Further, three-phase mixture inlet tube is tilted to down, with horizontal direction angle be that 30 ° or inner barrel diameter are that mixture enters7～8 times of mouthful pipe diameter, separating effect is now ideal.
Further, ripple overflow plate can be postponed storage from the isolated oil of overflow cylindrical shell, prevents from carrying too much moisture content, betterRealize water-oil separating.
Further, this device increase electronic densitometer has been realized the automatic control of whole separation, without manually on duty, greatly reducesHuman cost.
Further, gas enters gas-liquid separator afterwards, and dry separation dividing plate and separating screen can further be isolated in gas and carry secretlyDroplet. Ensure the amount of carrying of lower moisture content in divided gas flow.
Further, oil enters and in gs-oil separator, enters separator disk by water conservancy diversion funnel and carry out froth breaking, isolates to such an extent that carry secretly in oil phaseMinute bubbles.
[brief description of the drawings]
Fig. 1 is three phase separator structure chart of the present invention;
Wherein: 10. outside cylindrical shell; 11. overflow cylindrical shells; 12. oil exit pipes; 13. ripple overflow plates; 14. inner cylindrical shells; 15. blast pipes;16. three-phase mixture inlet tubes; 17. electronic densitometers; 18. filling pipes; 19. filling pipe inlet valves; 20. electric draining valves;
Fig. 2 is gas-liquid light oil three-phase separating device schematic diagram of the present invention;
Wherein: 1. gas-liquid separator; 2. three phase separator; 3. oil feed pump; 4. gs-oil separator;
Fig. 3 is structure of gas liquid separator figure of the present invention;
Wherein: 5. separate dividing plate; 6. separating screen; 7. gas outlet; 8. tapping valve; 9. gas-liquid mixture import;
Fig. 4 is oil-gas separator structure figure of the present invention;
Wherein: 21. gas mixture inlet tubes; 22. motor; 23. turning cylinders; 24. water conservancy diversion funnels; 25. separator disks; 26. exhaustsMouthful; 27. draining valves.
[detailed description of the invention]
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but in description of the invention, needs to understand, embodiment described in the invention is exemplary, the design parameter occurring in description is only the present invention for convenience of description,And can not be interpreted as limitation of the present invention.
As shown in Figure 1, a kind of gas-liquid light oil of the present invention three-phase separating device, comprises three phase separator 2, in separator profilePortion is cylindrical, and it is conical that bottom is, and end face is arc surface. The structure that three phase separator 2 comprises has outside cylindrical shell 10, overflowCylindrical shell 11, oil exit pipe 12, ripple overflow plate 13, inner cylindrical shell 14, blast pipe 15, three-phase mixture inlet tube 16, electronicsDensitometer 17, filling pipe 18, filling pipe inlet valve 19 and electric draining valve 20. Wherein, oil exit pipe 12 is by welding and outsideCylindrical shell 10 internal faces are connected, and overflow cylindrical shell 11 bottoms are connected with the conus portion inwall of outside cylindrical shell 10 by welding; Ripple overflowPlate 13 is arranged on the circumferential of overflow cylindrical shell 11 ends, and is connected with overflow cylindrical shell 11 outside wall surface by welding; Inner cylindrical shell 14 withOutside cylindrical shell 10 has same central shaft and common end face, and inner cylindrical shell 14 passes through to weld and they with outside cylindrical shell 10 topsCommon end face is connected, and blast pipe 15 one end are connected with inner cylindrical shell 14 top inner wall by welding, and blast pipe 15 other ends are logicalPiping is for being connected with gas-liquid separator 1, and three-phase mixture inlet tube 8 passes outside cylindrical shell 10 along inner cylindrical shell 14 outside wall surfaceTangent line is connected with inner cylindrical shell by welding. Filling pipe 18 is by flange and filling pipe inlet valve 19 and outside cylindrical shell 10 bottomsSurface is connected, and electric draining valve 20 is connected with outside cylindrical shell 10 bottoms by flange.
In order to improve separating effect, the diameter of inner cylindrical shell 14 is less than the diameter of overflow cylindrical shell 11, and the bottom of inner cylindrical shell 14Stretch in overflow cylindrical shell 11. Preferably, inner cylindrical shell 14, overflow cylindrical shell 11 and blast pipe 15 coaxially arrange.
Wherein, ripple overflow plate 13 be upper surface be processed to there is the groove of some proper alignment, with certain thicknessFlat board, oil water mixture flows through each groove water can be deposited on bottom portion of groove, can realize oil water mixture is carried out furtherSeparate.
This device is also provided with densitometer 17 monitors the density of fluid in the gap between outside cylindrical shell 10 and overflow cylindrical shell 11.Densitometer 17 one end are connected with outside cylindrical shell 10 by wire, and the other end is connected with electric draining valve 20 by wire.
With computer, to heterogeneous fluid, mobile in this three-phase separating device carries out the result that numerical simulation draws to tonneau, and three-phase mixesThing inlet tube 16 is tilted to down, with horizontal direction angle be 30 °, inner cylindrical shell 14 diameters are mixture intake pipe 16 diameters7～8 times, separating effect is now ideal.
In first isolated gas, carry liquid and the first separation completely that separates the gas in fuel-displaced in order further to solve, the present invention doesImprovement as shown in Figure 2, the separator that patent of the present invention provides comprises gas-liquid separator 1, three phase separator 2, oil feed pump3 and gs-oil separator 4. The gas-liquid mixture import 9 of gas-liquid separator 1 is communicated with the gas outlet 7 of three phase separator 2, three-phaseThe oil exit pipe 12 of separator 2 is connected with gas mixture inlet tube 21.
As shown in Figure 3, gas-liquid separator 1 comprises that separating dividing plate 5, separating screen 6, gas outlet 7, tapping valve 8 and gas-liquid mixesCompound import 9. Two separation dividing plates 5 are connected with gas-liquid separator 1 inwall by welding, at an angle to the horizontal direction; PointBe connected with gas-liquid separator 1 inwall by welding from screen cloth 6, maintenance level. Gas-liquid separator 1 bottom arranges tapping valve 8, topPortion sets out gas port 7. Gas-liquid mixture import 9 is arranged on the sidewall of gas-liquid separator 1, and arranges lower than separating dividing plate 5.
As shown in Figure 4, the structure that gs-oil separator 4 comprises have gas mixture inlet tube 21, motor 22, turning cylinder 23,Water conservancy diversion funnel 24, separator disk 25, exhaust outlet 26 and draining valve 27. Wherein, gas mixture inlet tube 21 is by welding and oilGas separating device is connected, and exhaust outlet 26 is connected with gs-oil separator by welding, and motor 22 is bolted on gs-oil separatorOn end face, turning cylinder is through gs-oil separator end face and be bolted motor 22 and separator disk 25, and water conservancy diversion funnel 24 is logicalCross welding and be connected with gs-oil separator internal face, in the middle of water conservancy diversion funnel 24, have circular hole, circular hole aperture to be slightly larger than turning cylinder 23 external diameters,Make turning cylinder 23 can pass circular hole.
Wherein, circular hole aperture is less than the external diameter of separator disk 25. Exhaust outlet 26 height is set higher than the height of separator disk 25. OilGas mixture inlet tube 21 is arranged on water conservancy diversion funnel 24 tops.
Operation principle of the present invention is: before separator is enabled, first open filling pipe inlet valve 19 by filling pipe 18 to three phase separationIn device, inject a certain amount of water, close afterwards filling pipe inlet valve 19. Oil gas aqueous mixtures is tangentially flowed into by mixture intake pipe 16The inside cylindrical shell 14 of separator, owing to being tangentially oblique lower inflow, inner cylindrical shell 14 is rear to be revolved along its inwall mixture enteringTurn whereabouts. In inner cylindrical shell 14, realize cyclonic separation, air accumulation also floats and is arranged by blast pipe 15 at inner cylindrical shell 14 centersGo out; Isolated oil water mixture falls along inner cylindrical shell 14 internal faces, is gathered in overflow cylindrical shell 11 bottoms, at the work of density contrastBy lower light oil floating. When continuing to add after oil gas aqueous mixtures, oil water mixture liquid level is during higher than overflow cylindrical shell 11, light oilOverflow is crossed overflow cylindrical shell 3 and is flow on ripple overflow plate 13, and a small amount of water of now carrying secretly in light oil is further separated.After ripple overflow plate 13, light oil is discharged through oil exit pipe 12.
Electronic densitometer 17 is monitored the fluid density between outside cylindrical shell 10 and overflow cylindrical shell 11, and electronic densitometer 17 one end are passed throughWire stretches in the gap between overflow cylindrical shell 11 and outside cylindrical shell 10, and the other end is connected with electric draining valve 20 by wire.In the time that density exceedes light oil density, explanation has water to sneak into, and sends signal and discharges a certain amount of water to electric draining valve 20.
The gas that blast pipe 15 is discharged enters gas-liquid separator 1, gas floating in gas-liquid separator 1, and separated dividing plate 5 hindersAfter gear, gas continues to rise along the passage that separates 5, dividing plate, and the drop of carrying secretly in gas is because inertial impaction is separating on dividing plate 5,When gas floating is by separating screen 6 afterwards, another part drop is blocked, and the gas liquid content that makes to leave gas outlet 7 is lower.Realize the effect of further separating liquid.
The oil that oil exit pipe 12 is discharged enters in gs-oil separator 4 by gas mixture inlet tube 21, now opens motor 22,Turning cylinder 23 drives separator disk 25 to rotate, and gas mixture flows on separator disk 25 after water conservancy diversion funnel 24, separator disk 25In rotary course, oil drops on gs-oil separator inwall at centrifugal action, flows down afterwards by draining valve 27 and discharges, originally oilIn the bubble that contains be separated cause exhaust outlet 26 and discharge.
The connection of each several part of the present invention is and is tightly connected, and ensures that air-tightness is good.
Above, be only preferred embodiment of the present invention, be not limited only to practical range of the present invention, all contents according to the scope of the inventionThe equivalence of doing changes and modifies, and all should be technology category of the present invention.
Claims (10)
1. a gas-liquid light oil three-phase separating device, is characterized in that: comprise three phase separator (2), gas-liquid separator (1)And gs-oil separator (4); Described three phase separator (2) comprises outside cylindrical shell (10) and the three-phase mixture inlet tube of sealing(16); Described outside cylindrical shell (10) bottom is upwards provided with overflow cylindrical shell (11), and top is to being arranged with interior barrel body (14),Inner cylindrical shell (14) lower end is stretched in overflow cylindrical shell (11); Described downward-sloping the wearing in three-phase mixture inlet tube (16) one endCross outside cylindrical shell (10) and be communicated with inner cylindrical shell (14), making oil gas aqueous mixtures tangentially enter inner cylindrical shell (14)Realize cyclonic separation; Described outside cylindrical shell (10) top is provided with the blast pipe (15) being communicated with inner cylindrical shell (14), sideOn wall, be provided with the oil exit pipe (12) that gap is communicated with between overflow cylindrical shell (11) and outside cylindrical shell (10), bottom be provided withElectric draining valve (20) and filling pipe (18) that overflow cylindrical shell (11) is communicated with; The blast pipe (15) of described three phase separator (2)Be communicated with gas-liquid separator (1), the oil exit pipe (12) of three phase separator (2) is by oil feed pump (3) and gs-oil separator (4)Gas mixture inlet tube (21) be communicated with.
2. a kind of gas-liquid light oil three-phase separating device according to claim 1, is characterized in that: described three-phase mixesThe center line of thing inlet tube (16) is tangent with circular arc corresponding on inner cylindrical shell (5) inwall.
3. a kind of gas-liquid light oil three-phase separating device according to claim 1, is characterized in that: described three-phase mixesThe center line of thing inlet tube (16) and horizontal direction angle are 30 °.
4. a kind of gas-liquid light oil three-phase separating device according to claim 1, is characterized in that: described inside cylindrical shell(5) diameter is 7～8 times of mixture intake pipe (8) diameter.
5. a kind of gas-liquid light oil three-phase separating device according to claim 1, is characterized in that: described overflow cylindrical shell(11) upper end be circumferentially provided with ripple overflow plate (13), between ripple overflow plate (13) and outside cylindrical shell (10), establishGapped; The upper surface of described ripple overflow plate (13) is provided with the groove of some proper alignment.
6. a kind of gas-liquid light oil three-phase separating device according to claim 1, is characterized in that: described outside cylindrical shell(10) on, be also provided with the electronic densitometer (17) for monitoring fluid density between overflow cylindrical shell (11) and outside cylindrical shell (10);Electronic densitometer (17) is connected with electric draining valve (20) by wire.
7. a kind of gas-liquid light oil three-phase separating device according to claim 1, is characterized in that: described gas-liquid separationDevice (1) top is provided with gas outlet (7), and sidewall bottom is provided with the gas-liquid mixture import (9) being communicated with blast pipe (15),Bottom is provided with tapping valve (8); Gas-liquid separator (1) inner inclination is provided with some separation dividing plates (5), adjacent separation everyPlate (5) is crisscross arranged up and down, and each separation dividing plate (5) one end and cylinder inboard wall leave gap and form labyrinth type and separate dividing plate group.
8. a kind of gas-liquid light oil three-phase separating device according to claim 7, is characterized in that: described separation dividing plateThe top of group is provided with separating screen (6).
9. a kind of gas-liquid light oil three-phase separating device according to claim 1, is characterized in that: described Oil-gas SeparationDevice (4) inside is provided with the water conservancy diversion funnel (24) being communicated with gas mixture inlet tube (21), gs-oil separator (4) topBe provided with motor (22), turning cylinder (23) lower end being connected with motor (22) is successively through gs-oil separator (4) cylindrical shellThe middle circular hole of end face and water conservancy diversion funnel (24) is connected with separator disk (25); Between being provided with between middle circular hole and turning cylinder (23)Gap; On the sidewall of described gs-oil separator (4) cylindrical shell, be provided with exhaust outlet (26), bottom is provided with draining valve (27).
10. a kind of gas-liquid light oil three-phase separating device according to claim 9, is characterized in that: described separator disk (25)Diameter be greater than in the middle of the diameter of circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610157839.5A CN105597378B (en) | 2016-03-18 | 2016-03-18 | A kind of gas-liquid light oil three-phase separating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610157839.5A CN105597378B (en) | 2016-03-18 | 2016-03-18 | A kind of gas-liquid light oil three-phase separating device |
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| CN105597378A true CN105597378A (en) | 2016-05-25 |
| CN105597378B CN105597378B (en) | 2017-10-20 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350100A (en) * | 2016-09-28 | 2017-01-25 | 上海慧随科技有限公司 | Oil-water separating device for crude oil |
| CN108148643A (en) * | 2018-02-08 | 2018-06-12 | 江苏优耐特过滤装备有限公司 | Vertical multi-stage separator |
| CN108913364A (en) * | 2018-09-25 | 2018-11-30 | 江西中医药大学 | Extract separator and volatile oil preparation system |
| CN109621470A (en) * | 2018-12-27 | 2019-04-16 | 合肥艾普拉斯环保科技有限公司 | The gas-liquid separator that can be used in acrylamide group methyl propane sulfonic acid distillation equipment |
| CN112791869A (en) * | 2020-12-30 | 2021-05-14 | 东北石油大学 | Automatic throughput type flow division ratio self-adjusting hydraulic cyclone separation device |
| CN113457190A (en) * | 2021-06-15 | 2021-10-01 | 中石化南京化工研究院有限公司 | Gas-liquid separator for synthesizing age resister 6PPD |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350100A (en) * | 2016-09-28 | 2017-01-25 | 上海慧随科技有限公司 | Oil-water separating device for crude oil |
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| CN108148643A (en) * | 2018-02-08 | 2018-06-12 | 江苏优耐特过滤装备有限公司 | Vertical multi-stage separator |
| CN108913364A (en) * | 2018-09-25 | 2018-11-30 | 江西中医药大学 | Extract separator and volatile oil preparation system |
| CN109621470A (en) * | 2018-12-27 | 2019-04-16 | 合肥艾普拉斯环保科技有限公司 | The gas-liquid separator that can be used in acrylamide group methyl propane sulfonic acid distillation equipment |
| CN112791869A (en) * | 2020-12-30 | 2021-05-14 | 东北石油大学 | Automatic throughput type flow division ratio self-adjusting hydraulic cyclone separation device |
| CN113457190A (en) * | 2021-06-15 | 2021-10-01 | 中石化南京化工研究院有限公司 | Gas-liquid separator for synthesizing age resister 6PPD |
| CN113457190B (en) * | 2021-06-15 | 2022-07-26 | 中石化南京化工研究院有限公司 | Gas-liquid separator for synthesizing antioxidant 6PPD |
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