CN112899017A - Vertical three-phase separator - Google Patents
Vertical three-phase separator Download PDFInfo
- Publication number
- CN112899017A CN112899017A CN202110133220.1A CN202110133220A CN112899017A CN 112899017 A CN112899017 A CN 112899017A CN 202110133220 A CN202110133220 A CN 202110133220A CN 112899017 A CN112899017 A CN 112899017A
- Authority
- CN
- China
- Prior art keywords
- gas
- oil
- liquid
- separation
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G53/00—Treatment of hydrocarbon oils, in the absence of hydrogen, by two or more refining processes
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Degasification And Air Bubble Elimination (AREA)
Abstract
The invention discloses a vertical three-phase separator which comprises a tank body, wherein a liquid inlet pipe, an oil discharge pipe, a water discharge pipe and an exhaust pipe are arranged on the tank body, a partition plate is arranged in the tank body, the vertical three-phase separator also comprises a gas-liquid separation device arranged in a gas-liquid separation area, the gas-liquid separation device comprises a gas-liquid separator and an auxiliary separation structure, the gas-liquid separator is rotatably arranged in the gas-liquid separation area, the gas-liquid separator comprises a rotary drum, a plurality of separation plates and a motor, and the auxiliary separation structure comprises a buffer plate and a buffer drum; the oil-water separator is provided with the gas-liquid separator and the auxiliary separation structure, so that the gas-liquid separation effect and the separation efficiency can be improved, the gas content in oil is further reduced compared with the existing mode, and the influence on the next oil-water separation process is reduced; still be equipped with the fire fighting equipment, can eliminate the foam that the oil flows the collision and produces in the jar body, further reduce the influence to the oil water separation process to improve oil water separation's efficiency.
Description
Technical Field
The invention relates to a vertical three-phase separator.
Background
At oil development's in-process, the oil of exploiting out from the oil well generally is oil gas water three-phase mixture, can separate the three-phase material in the oil through oil gas water three-phase separator, makes things convenient for the refining processing in later stage.
The oil-gas-water three-phase separator in the related technology generally comprises a gas-liquid separation area and an oil-water separation area, wherein after petroleum is introduced into the oil-gas-water three-phase separator, the petroleum firstly flows into the gas-liquid separation area to separate gas from liquid, and the gas is discharged through an exhaust port to realize gas-liquid separation; then introducing the oil-water mixture subjected to gas-liquid separation into an oil-water separation zone to separate oil from water, and finally collecting the oil and the water respectively, thereby achieving the purpose of oil-gas-water three-phase separation;
in the prior art, when a three-phase separator is used for gas-liquid separation, only a throwing mechanism is adopted to separate liquid and gas, so that the condition of incomplete gas-liquid separation is easily caused, bubbles are generated inside petroleum flowing in a tank body, and the effect and efficiency of next water-oil separation are influenced, so that the three-phase separator capable of eliminating the bubbles in the petroleum needs to be designed.
Disclosure of Invention
The invention provides a vertical three-phase separator which can solve the problems that in the prior art, the three-phase separator contains bubbles in petroleum due to incomplete gas-liquid separation, and the water-oil separation effect is reduced.
The utility model provides a vertical three-phase separator, includes a jar body, feed liquor pipe, oil extraction pipe, drain pipe and blast pipe have on the jar body, the blast pipe is located the top of jar body, the internal baffle that has of jar, the baffle will the inner chamber of jar body is separated into and is located the gas-liquid separation district of baffle top and being located the oil-water separation district of baffle below, the center department of oil-water separation district is equipped with oil-water separation pipe, the top of oil-water separation pipe is run through the baffle and is linked through the gas-liquid separation district still is including setting up gas-liquid separation device in the gas-liquid separation district, gas-liquid separation device includes:
the gas-liquid separator is rotatably arranged in the gas-liquid separation area and comprises a rotary drum, a plurality of separation plates which are circumferentially and uniformly fixed on the rotary drum and a motor which is arranged outside the tank body, the motor is used for driving the rotary drum to rotate, and a plurality of through holes are formed in the side wall of the rotary drum and the separation plates; and
an auxiliary separation structure comprising a buffer plate located above the gas-liquid separator and a buffer cylinder located below the gas-liquid separator;
the top and the bottom of the buffer cylinder are semi-spherical and are provided with a plurality of through holes, and the upper part of the partition plate is fixedly connected with a support rod for connecting the buffer cylinder.
Preferably, the defoaming device is further comprised, and the defoaming device comprises:
the defoaming net is annular and is arranged between the buffer cylinder and the inner wall of the tank body;
the center of the push plate is provided with a yielding groove for yielding the buffer cylinder, and a rubber ring is arranged in the yielding groove; and
the cylinder is arranged on the inner wall of the tank body, and the output end of the cylinder is connected with the push plate; and the tank body is provided with a protective cover for covering the cylinder.
Preferably, the defoaming device further comprises a plurality of heating pipes arranged on the upper side of the partition plate, and the plurality of heating pipes are circumferentially and uniformly distributed on the upper side of the partition plate.
Preferably, the blast pipe stretches into port department in the jar body is equipped with the gas-liquid filtration cover, the blast pipe overcoat has the spring, the one end of spring is connected on the inner wall of the jar body, the other end with the gas-liquid filtration cover is connected.
Preferably, a guide bar is installed at the top of the inner wall of the tank body, a guide plate is connected to the upper side of the buffer plate, the guide plate is installed on the guide bar, and the buffer plate and the guide plate can move up and down along the guide bar.
The invention has the beneficial effects that: the oil-water separator is provided with the gas-liquid separator and the auxiliary separation structure, so that the gas-liquid separation effect and the separation efficiency can be improved, the gas content in oil is further reduced compared with the existing mode, and the influence on the next oil-water separation process is reduced;
still be equipped with the fire fighting equipment, can eliminate the foam that the oil flows the collision and produces in the jar body, further reduce the influence to the oil water separation process to improve oil water separation's efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic structural view of a push plate of the present invention;
FIG. 4 is a schematic view of the structure of a gas-liquid separator according to the present invention;
fig. 5 is a schematic structural view of the separator of the present invention.
Description of reference numerals:
1. the oil-water separator comprises a tank body, 2, a liquid inlet pipe, 3, an oil discharge pipe, 4, a water discharge pipe, 5, an exhaust pipe, 6, a partition board, 7, a gas-liquid separation area, 8, an oil-water separation area, 9, an oil-water separation pipe, 10, a gas-liquid filter cover, 11, a rotary drum, 12, a separation plate, 13, a buffer plate, 14, a buffer cylinder, 15, a guide plate, 16, an air cylinder, 21, a defoaming net, 22, a push plate, 23, a rubber ring, 24, a heating pipe, 25 and a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 5, a vertical three-phase separator includes a tank 1, the tank 1 has a liquid inlet pipe 2, an oil discharge pipe 3, a water discharge pipe 4 and a gas discharge pipe 5, the gas discharge pipe 5 is located at the top of the tank 1, a partition plate 6 is provided in the tank 1, the partition plate 6 divides an inner cavity of the tank 1 into a gas-liquid separation zone 7 located above the partition plate 6 and an oil-water separation zone 8 located below the partition plate 6, an oil-water separation pipe 9 is provided at the center of the oil-water separation zone 8, and the top end of the oil-water separation pipe 9 penetrates through the partition plate 6 and communicates with the gas-liquid separation zone 7;
the oil-water separation pipe 9 is composed of an inner pipe, an outer pipe and helical blades which are coaxially arranged, wherein one end of the inner pipe close to the gas-liquid separation zone 7 is closed, an annular space between the inner pipe and the outer pipe is communicated with the gas-liquid separation zone 7 through a partition plate 6, and an oil-water mixture which is subjected to gas-liquid separation and is positioned at the lower layer then enters the annular space of the oil-water separation pipe 9 communicated with the partition plate 6; the helical blades are arranged in the annular space, the helical blades define a helical flow channel in the annular space, an oil-water mixture flows in the flow channel under the action of gravity and forms a rotational flow, so that oil and water in the oil-water mixture are centrifugally separated, water with high density enters the inner pipe from a through hole in the inner pipe, which is communicated with the annular space, and is discharged out of the tank body 1 through the inner pipe and a drain pipe 4 communicated with the inner pipe, and oil with low density enters the oil-water separation region 8 from a through hole in the outer pipe and is discharged out of the tank body 1 through an oil discharge pipe 3 communicated with the oil-water separation region 8, so that oil-water separation is realized;
in order to realize the purpose of gas-liquid separation, the gas-liquid separation device is arranged in the gas-liquid separation zone 7 and comprises:
the gas-liquid separator is rotatably arranged in the gas-liquid separation zone 7 and comprises a rotary drum 11, a plurality of separation plates 12 which are circumferentially and uniformly fixed on the rotary drum 11 and a motor which is arranged outside the tank body 1 and is not shown in the figure, wherein the motor is used for driving the rotary drum 11 to rotate, and a plurality of through holes are formed in the side wall of the rotary drum 11 and the separation plates 12; and
an auxiliary separating structure including a buffer plate 13 located above the gas-liquid separator and a buffer tank 14 located below the gas-liquid separator;
petroleum enters the tank body 1 through the liquid inlet pipe 2 and falls on the rotating gas-liquid separator, and the separating plate 12 and the rotating drum 11 which are provided with a plurality of through holes can scatter the petroleum, so that the separation of the petroleum and the gas is accelerated;
the gas-liquid separator can throw the petroleum to the auxiliary separation structure in the rotating process, so that the gas-liquid separation efficiency is further improved;
the top and the bottom of the buffer cylinder 14 are both semi-spherical and are provided with a plurality of through holes, and a support rod for connecting the buffer cylinder 14 is fixedly connected above the partition plate 6;
in order to eliminate bubbles in oil, the present invention further includes a defoaming apparatus, as shown in fig. 1, the defoaming apparatus including:
the defoaming net 21 is annular and is arranged between the buffer cylinder 14 and the inner wall of the tank body 1, and the defoaming net is an annular net structure woven by thin metal wires;
a yielding groove for yielding the buffer cylinder 14 is formed in the center of the push plate 22, and a rubber ring 23 is installed in the yielding groove; and
the air cylinder 16 is arranged on the inner wall of the tank body 1, and the output end of the air cylinder 16 is connected with the push plate 22; the tank body 1 is provided with a protective cover for covering the cylinder 3;
the petroleum is separated into gas and liquid by the gas-liquid separator, and then falls on the buffer cylinder 14 to generate bubbles, and the bubbles flow to the gap between the inner wall of the tank body 1 and the buffer cylinder 14 along the semi-spherical top of the buffer cylinder 14;
when the push plate 12 is pushed to descend by the air cylinder 16, the rubber ring 23 in the push plate 12 is in contact with the outer wall of the middle part of the buffer cylinder 14, a sealing cavity with a certain size is formed between the push plate 12 and the liquid level of petroleum, when the push plate 12 continues to descend, the petroleum between the buffer cylinder 14 and the inner wall of the tank body 1 is accelerated by pressure to enter the oil-water separation pipe 9, the oil-water separation effect is improved, when the petroleum between the buffer cylinder 14 and the inner wall of the tank body 1 is accelerated by pressure to enter the oil-water separation pipe 9, the liquid level of the part of petroleum descends, so that a foam layer on the liquid level of the petroleum is in contact with the defoaming net 21, the foam is broken, and the defoaming;
as shown in fig. 1, the gap between the bottom of the buffer cylinder 14 and the partition 6 is smaller than the gap between the middle part of the buffer cylinder 6 and the inner wall of the tank body 1, so that the pressure of oil can be increased, and the speed of the oil entering the oil-water separation pipe 9 can be increased;
in order to further eliminate gas contained in the petroleum, the defoaming device further comprises a plurality of heating pipes 24 arranged on the upper side of the partition plate 6, the heating pipes 24 are circumferentially and uniformly distributed on the upper side of the partition plate 6, the heating pipes 24 can increase the surface tension of bubbles in the petroleum, firstly, the bubbles can be enabled to float up to a foam layer of a liquid surface more quickly, and secondly, the breaking speed of the bubbles can be accelerated;
a gas-liquid filtering cover 10 is arranged at the port of the exhaust pipe 5 extending into the tank body 1, a spring 25 is sleeved outside the exhaust pipe 5, one end of the spring 25 is connected to the inner wall of the tank body 1, and the other end of the spring 25 is connected with the gas-liquid filtering cover 10;
the gas-liquid filtering cover 10 is used for adsorbing tiny liquid drops in gas, so that the excessive liquid content of the gas part is avoided, and the waste of petroleum is effectively reduced;
in order to prevent the gas-liquid separator from throwing the petroleum mixture onto the gas-liquid filtering cover 10, a guide rod is installed at the top of the inner wall of the tank body 1, a guide plate 15 is connected to the upper side of the buffer plate 13, the guide plate 15 is installed on the guide rod, the buffer plate 13 and the guide plate 15 can move up and down along the guide rod, as shown in fig. 2, the upper side surface of the guide plate 15 is a convex surface, and the speed of liquid collected by the gas-liquid filtering cover 10 flowing back to the gas-liquid separation zone 7 can be increased;
at vapour and liquid separator's rotation in-process, on oil can be got rid of buffer board 13, can make buffer board 13 rebound, guide plate 15 just can contradict on gas-liquid filter cover 10, and gas-liquid filter cover 10 rocks from top to bottom under spring 25's effect, can be with higher speed with the little liquid of cell-phone on gas-liquid filter cover 10 low getting rid of down, improves backward flow speed, also can make gas-liquid filter cover 10 keep better filter effect.
When the oil-water separator is used, oil enters the tank body 1 through the liquid inlet pipe 2 and falls on the rotating gas-liquid separator, the rotating separating plate 12 and the rotating drum 11 can break up the oil and throw the oil to the buffer plate 13 and the buffer cylinder 14, the gas-liquid separation speed and effect are improved, then part of the oil enters the buffer cylinder 14 through the through hole at the top of the buffer cylinder 14 and then flows out from the through hole at the bottom of the buffer cylinder 14, the other part of the oil flows to a gap between the buffer cylinder 14 and the inner wall of the tank body 1 along the outer wall at the top of the buffer cylinder 14, the air cylinder 16 pushes the push plate 12 to descend, the oil between the buffer cylinder 14 and the inner wall of the tank body 1 is accelerated by pressure to enter the oil-water separating pipe 9, the liquid level of the oil descends, a foam layer at the liquid level of the oil is contacted with the defoaming net 21, the foam is broken, the defoaming function is realized, after the oil enters the oil separating pipe 9, an oil-water mixture flows in, make oil and water in the oil-water mixture take place centrifugal separation, the great water of density gets into in the inner tube with the through-hole of annular space intercommunication on the inner tube to through the inner tube and with inner tube intercommunication drain pipe 4 discharge jar body 1, the less oil of density then gets into in the oil-water separation zone 8 by the through-hole that is located on the outer tube, and through the oil extraction pipe 3 discharge jar body 1 with oil-water separation zone 8 intercommunication, realize oil-water separation.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The utility model provides a vertical three-phase separator, includes a jar body, feed liquor pipe, oil extraction pipe, drain pipe and blast pipe have on the jar body, the blast pipe is located the top of jar body, the internal baffle that has of jar, the baffle will the inner chamber of jar body is separated into and is located the gas-liquid separation district of baffle top and being located the oil-water separation district of baffle below, the center department of oil-water separation district is equipped with oil-water separation pipe, the top of oil-water separation pipe is run through the baffle and the intercommunication the gas-liquid separation district, its characterized in that still is in including setting up gas-liquid separation device in the gas-liquid separation district, gas-liquid separation device includes:
the gas-liquid separator is rotatably arranged in the gas-liquid separation area and comprises a rotary drum, a plurality of separation plates which are circumferentially and uniformly fixed on the rotary drum and a motor which is arranged outside the tank body, the motor is used for driving the rotary drum to rotate, and a plurality of through holes are formed in the side wall of the rotary drum and the separation plates; and
an auxiliary separation structure comprising a buffer plate located above the gas-liquid separator and a buffer cylinder located below the gas-liquid separator;
the top and the bottom of the buffer cylinder are semi-spherical and are provided with a plurality of through holes, and the upper part of the partition plate is fixedly connected with a support rod for connecting the buffer cylinder.
2. A vertical three-phase separator according to claim 1, further comprising a bubble removal device, said bubble removal device comprising:
the defoaming net is annular and is arranged between the buffer cylinder and the inner wall of the tank body;
the center of the push plate is provided with a yielding groove for yielding the buffer cylinder, and a rubber ring is arranged in the yielding groove; and
the cylinder is arranged on the inner wall of the tank body, and the output end of the cylinder is connected with the push plate; and the tank body is provided with a protective cover for covering the cylinder.
3. The vertical three-phase separator as claimed in claim 2, wherein the defoaming device further comprises a plurality of heating pipes installed on the upper side of the partition plate, and the plurality of heating pipes are circumferentially and uniformly distributed on the upper side of the partition plate.
4. The vertical three-phase separator according to claim 3, wherein a gas-liquid filtering cover is arranged at the port of the exhaust pipe extending into the tank body, a spring is sleeved outside the exhaust pipe, one end of the spring is connected to the inner wall of the tank body, and the other end of the spring is connected with the gas-liquid filtering cover.
5. The vertical three-phase separator as claimed in claim 4, wherein a guide bar is installed on the top of the inner wall of the vessel body, a guide plate is connected to the upper side of the buffer plate, the guide plate is installed on the guide bar, and the buffer plate and the guide plate can move up and down along the guide bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110133220.1A CN112899017A (en) | 2021-02-01 | 2021-02-01 | Vertical three-phase separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110133220.1A CN112899017A (en) | 2021-02-01 | 2021-02-01 | Vertical three-phase separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112899017A true CN112899017A (en) | 2021-06-04 |
Family
ID=76122146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110133220.1A Pending CN112899017A (en) | 2021-02-01 | 2021-02-01 | Vertical three-phase separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112899017A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253401A (en) * | 2022-08-17 | 2022-11-01 | 同济大学 | HRT and SRT separated organic solid waste anaerobic digestion reaction device |
| CN115975671A (en) * | 2022-12-12 | 2023-04-18 | 江苏华普泰克石油装备有限公司 | Metering device suitable for petroleum three-phase separator and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100247A (en) * | 2014-07-09 | 2014-10-15 | 张家港市顺佳隔热技术有限公司 | Oil-gas separation buffering tank |
| CN211215543U (en) * | 2019-11-25 | 2020-08-11 | 中科睿凌（北京）低温设备有限公司 | Three-phase separator |
| CN111826196A (en) * | 2020-04-03 | 2020-10-27 | 中国石油天然气股份有限公司 | Oil-gas-water three-phase separator |
-
2021
- 2021-02-01 CN CN202110133220.1A patent/CN112899017A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100247A (en) * | 2014-07-09 | 2014-10-15 | 张家港市顺佳隔热技术有限公司 | Oil-gas separation buffering tank |
| CN211215543U (en) * | 2019-11-25 | 2020-08-11 | 中科睿凌（北京）低温设备有限公司 | Three-phase separator |
| CN111826196A (en) * | 2020-04-03 | 2020-10-27 | 中国石油天然气股份有限公司 | Oil-gas-water three-phase separator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253401A (en) * | 2022-08-17 | 2022-11-01 | 同济大学 | HRT and SRT separated organic solid waste anaerobic digestion reaction device |
| CN115975671A (en) * | 2022-12-12 | 2023-04-18 | 江苏华普泰克石油装备有限公司 | Metering device suitable for petroleum three-phase separator and use method thereof |
| CN115975671B (en) * | 2022-12-12 | 2023-10-20 | 江苏华普泰克石油装备有限公司 | Metering device suitable for petroleum three-phase separator and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2009344910B2 (en) | Apparatus and method for separation of phases in a multiphase flow | |
| CN112899017A (en) | Vertical three-phase separator | |
| CN202015519U (en) | Gas-liquid separator | |
| CA2427240A1 (en) | Combined degassing and flotation tank | |
| US3212234A (en) | Separation method and apparatus | |
| US2788080A (en) | Liquid and gas separator | |
| US3171807A (en) | Liquid separating apparatus | |
| CN107638717A (en) | A kind of liquid gas separation method | |
| CN114044556B (en) | Centrifugal restaurant wastewater oil-water separator based on air floatation | |
| CN213995417U (en) | Purifier for supercritical carbon dioxide extraction device | |
| CN210948631U (en) | Knockout drum with autogyration oil dispersing cap structure | |
| CN205740576U (en) | A kind of oil-water separation processing means for oily waste water | |
| CN205850312U (en) | Oil-water separation processing system | |
| CN208436470U (en) | A kind of filter separator being centrifuged dirt collection | |
| CN111195560A (en) | Magnetic separation disc and magnetic separator for purifying quartz sand | |
| CN205398287U (en) | Air supporting processing oil separation of water equipment | |
| CA2069959A1 (en) | Method and apparatus for separation by flotation in a centrifugal field | |
| CN210356128U (en) | Novel membrane-oil-water separation equipment | |
| CN105130134B (en) | Water filtration desander | |
| CN204552725U (en) | The efficient oil, gas, water and sand four-phase separator of a kind of oil gas field | |
| CN107952286A (en) | A kind of sewage disposal hydrocyclone | |
| CN205346878U (en) | Degasification dirt separator | |
| CN110902760A (en) | Dirty oil-water separator and oil-water separator | |
| CN105347568B (en) | A kind of processing unit of food and drink waste water | |
| CN106430791B (en) | Dirty profit vacuum separation equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210604 |
|
| RJ01 | Rejection of invention patent application after publication |