CN110575714A - Gas-liquid separation device - Google Patents

Gas-liquid separation device Download PDF

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Publication number
CN110575714A
CN110575714A CN201910810644.XA CN201910810644A CN110575714A CN 110575714 A CN110575714 A CN 110575714A CN 201910810644 A CN201910810644 A CN 201910810644A CN 110575714 A CN110575714 A CN 110575714A
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CN
China
Prior art keywords
gas
fiber
liquid
framework
fiber bed
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
Application number
CN201910810644.XA
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Chinese (zh)
Inventor
杨积志
李海波
裴文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Anhorn Environmental Technology Co Ltd
Original Assignee
Shanghai Anhorn Environmental Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Anhorn Environmental Technology Co Ltd filed Critical Shanghai Anhorn Environmental Technology Co Ltd
Priority to CN201910810644.XA priority Critical patent/CN110575714A/en
Publication of CN110575714A publication Critical patent/CN110575714A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
    • B01D46/0031—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid with collecting, draining means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2411—Filter cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
    • 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 separation device, comprising: the side wall of the container tank is provided with a gas inlet and a liquid outlet, and the top of the container tank is provided with a gas outlet; a fiber bed structure located between a gas inlet and a gas outlet; the fiber bed structure comprises a fiber bed and a tube plate; the fiber bed comprises a cylindrical inner framework, at least 3 fiber layers wound on the inner framework and an outer framework sleeved outside the fiber layers, wherein one end of the inner framework is welded with the tube plate; the fiber bed also comprises a bottom plate which is respectively fixedly connected with one ends of the inner framework and the outer framework far away from the tube plate; each fiber layer is formed by spirally winding fibers on the inner skeleton, the fibers of the middle fiber layer of the plurality of fiber layers are made of lyophobic materials, and the diameters of the fibers of the fiber layers tightly attached to the inner skeleton are 100-300 mu m. The invention has better effect of removing the fog drops with the diameter less than 3um in the gas.

Description

Gas-liquid separation device
Technical Field
The invention relates to the technical field of fog drops in purified gas, in particular to a gas-liquid separation device.
Background
In many production processes, droplets suspended in the gas stream are unavoidable, and the droplets are mainly generated by mechanical forces, steam condensation, chemical reactions or gas-liquid entrainment.
wherein the diameters of the entrained droplets in the gas stream are different in different situations, such as: the mechanical force acts on liquid drops sprayed from the nozzle, and the diameter of the liquid drops is between 20 and 1000 um; the diameter of the condensed fog drops of the saturated steam is between 0.1 and 30 um; fog drops generated by the chemical reaction are between 0.1 and 8 um; the droplets entrained by the gas from the spray or bubble column are mostly concentrated between 500-.
The fiber demister in the prior art has poor fog drop purification effect due to small fiber size change of a fiber bed layer, and poor fog drop removal effect when the diameter of the fiber bed layer is smaller than 3 um.
Disclosure of Invention
The invention aims to provide a gas-liquid separation device which has a good effect of removing fog drops with the diameter smaller than 3um in gas.
The technical scheme provided by the invention is as follows:
a gas-liquid separation device comprising: the side wall of the container tank is provided with a gas inlet and a liquid outlet, the top of the container tank is provided with a gas outlet, and the height of the liquid outlet is lower than that of the gas inlet; a fiber bed structure disposed within the vessel tank, the fiber bed structure being located between the gas inlet and gas outlet; the fiber bed structure comprises a fiber bed and a tube plate, and the fiber bed is arranged between the tube plate and the gas inlet; the fiber bed comprises a cylindrical inner framework, at least 3 fiber layers wound on the inner framework and a cylindrical outer framework sleeved outside the fiber layers, one end of the inner framework is welded with the tube plate, and gas is discharged out of the container tank from a gas outlet after sequentially passing through the outer framework, the fiber layers, the inner framework and the tube plate; the fiber bed also comprises a bottom plate, and the bottom plate is respectively fixedly connected with one ends of the inner framework and the outer framework, which are far away from the tube plate; every layer the fibrous layer all establishes through fibre spiral winding form on the inner frame, be located a plurality of the fibre of the middle one deck fibrous layer of fibrous layer adopts lyophobic material to make, hugs closely on the inner frame the fibrous diameter of fibrous layer is 100 ~ 300 um.
In the structure, the fibre of middle one deck fibrous layer adopts lyophobic material to make and the fibrous diameter of fibrous bed's the fibrous layer that most closes to the inner frame is between 100 ~ 300um to the fibre of the fibrous layer that most closes to the inner frame is thick fibre, such setting can promote the fibrous layer flowing back, prevent to be located the droplet on the fibrous layer and by gaseous secondary band, and the fibrous bed that sets up like this can detach the diameter in the gas and be less than 3 um's droplet, improve the removal efficiency that the diameter is less than 3 um's droplet in the gas.
Preferably, the bottom plate is provided with a downcomer opening, the downcomer opening is externally connected with a vertically arranged downcomer, a liquid seal cup is arranged below the downcomer, and one end of the downcomer, which is far away from the bottom plate, extends into the liquid seal cup.
In the structure, the liquid drops removed from the fiber layer are timely guided out of the fiber bed through the downcomer, and when the liquid in the liquid seal cup overflows, the liquid overflowing to the bottom of the container tank is discharged through the liquid outlet. In the actual gas-liquid separation process, one end of the downcomer, which is far away from the bottom plate, extends into the liquid in the liquid seal cup, so that the gas to be purified, which carries the fogdrops, is prevented from directly flowing into the inner framework through the downcomer.
Preferably, the outer surfaces of the fibers of the fiber bed are coated with the modified fluorine material, and the fibers of the fiber bed are made of metal, glass fiber or polyester material.
The modified fluorine material has the advantages of high temperature resistance, acid resistance, alkali resistance, good chemical stability and difficult corrosion by acid fog drops carried in gas.
Preferably, in a plurality of the fiber layers, except the fiber layer tightly attached to the inner frame, the diameters of the fibers of other fiber layers are all between 5 and 100 um.
preferably, the thickness of the fiber bed is 20-200 mm, and the density of the bed layer of the fiber bed is 100-500 kg/m3。
Preferably, the gas-liquid separation device further includes: the outer flushing device is arranged on the surface, away from the inner framework, of the outer framework, and the outer flushing device is arranged at one end, close to the tube plate, of the outer framework.
when carrying the dirty droplet in the gas, wherein the great dirty droplet of diameter can't stay on the exoskeleton through the fiber bed, washes the dirty droplet that lies in on the exoskeleton through the outer washing unit who sets up on the exoskeleton this moment, avoids dirty droplet to block up the fiber bed, influences separation efficiency.
Preferably, the gas-liquid separation device further includes: interior washing unit, interior washing unit sets up the surface of exoskeleton is kept away from to the inner frame, interior washing unit sets up the one end that the inner frame is close to the tube sheet.
Smuggle when having dusty droplet secretly in the gas, wherein the less dusty droplet of diameter can stay on the inner frame after the fiber bed filters, and because the crystallization on the inner frame will be not handled for a long time to the salt composition that contains in some dusty droplets, lead to inner frame department to block up, influence the separation efficiency of fiber bed, at this moment, wash through the interior washing unit who sets up on the inner frame, in time wash the inner frame totally, avoid the crystallization.
The gas-liquid separation device provided by the invention can bring the following beneficial effects:
The gas-liquid separation device can improve the removal efficiency of the fog drops with the diameter smaller than 3um due to the special design of the fiber bed, and meanwhile, the inner flushing device and the outer flushing device are arranged in the container, so that the separation of the dust-containing fog drops in the gas to be purified is realized, the separation efficiency is ensured, and the separation of gas, liquid and solid phases is realized.
Drawings
The above features, technical features, advantages and modes of realization of the gas-liquid separator will be further described in the following description of preferred embodiments in a clearly understandable manner with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a gas-liquid separation apparatus.
The reference numbers illustrate:
1-container tank, 1 a-gas inlet, 1 b-liquid outlet, 1 c-gas outlet, 1 d-first spare port, 1 e-second spare port, 2-tube plate, 3 a-outer framework, 3 b-bottom plate, 4-downcomer and 5-liquid sealing cup.
Detailed Description
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
for the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product.
[ example 1 ]
As shown in fig. 1, example 1 discloses a specific embodiment of a gas-liquid separation apparatus, including: the vertical type container tank 1 and the fiber bed layer structure arranged in the vertical type container tank 1 are used for separating and removing the fog drops in the gas to be purified.
As shown in fig. 1, a gas inlet 1a and a liquid outlet 1b are opened in a side wall of the container tank 1, and gas to be purified enters from the gas inlet 1a and liquid formed by separated droplets is discharged from the liquid outlet 1 b. The height of the liquid outlet 1b is lower than that of the gas inlet 1a, so that the liquid collected at the bottom of the vertical vessel 1 does not block the gas inlet 1 a. The top of the container tank 1 is opened with a gas outlet 1c, and the purified gas is discharged from the gas outlet 1 c.
The fiber bed structure is positioned between the gas inlet 1a and the gas outlet 1c and comprises a fiber bed and a tube plate 2, the fiber bed is arranged between the tube plate 2 and the gas inlet 1a, the thickness of the fiber bed is 20-200 mm, and the density of the bed layer of the fiber bed is 100-500 kg/m3In this example, there are 2 fiber beds.
The fiber bed comprises a cylindrical inner framework, 9 fiber layers wound on the inner framework, a cylindrical outer framework 3a and a bottom plate 3b, wherein the cylindrical outer framework 3a and the bottom plate 3b are sleeved outside the 9 fiber layers, one end of the inner framework is welded with the tube plate 2, and the bottom plate 3b is fixedly connected with the inner framework and one end, far away from the tube plate 2, of the outer framework 3a respectively.
The gas to be purified sequentially passes through the outer framework 3a, the fiber layer, the inner framework and the tube plate 2 to obtain purified gas, and the purified gas is discharged out of the vertical container tank 1 from the gas outlet 1 c.
Along the direction from the inner framework to the outer framework 3a, the fiber layers are respectively defined as the 1 st layer, the 2 nd layer until the 9 th layer, each fiber layer in the fiber bed is formed by spirally winding fibers on the inner framework, for example, the 2 nd layer is wound on the 1 st layer, the 3 rd layer is wound on the 2 nd layer, the outer surface of the fiber of each fiber layer of the fiber bed is coated with the modified fluorine material, the fiber of the middle fiber layer (the 5 th layer in this embodiment) of the 9 fiber layers is made of the lyophobic material, the lyophobic material is PVDS, PTFE or polypropylene, etc., the diameter of the fiber layer (the 1 st layer in this embodiment) tightly attached to the inner skeleton is 100-300 um, except the fiber of the 1 st fiber layer in this embodiment, the diameters of the fibers of other fiber layers are all between 5 and 100um, and the specific diameters of all the fiber layers are selected according to actual conditions.
the fiber is made of metal, glass fiber or polyester material, and the specific material of the fiber is determined according to the actual application scene; the thickness of the fiber bed can be 20-200 mm, and the density of the bed layer of the fiber bed can be 100-500 kg/m3Taking values; the number of fiber layers of the fiber bed can be other numbers, which is determined according to practical situations and is not limited herein.
In order to enable fog drops separated from the fiber bed to flow to the bottom of the vertical container tank 1 from the fiber bed and prevent gas to be purified from directly crossing the fiber bed and then being discharged through the gas outlet 1c, the bottom plate 3b is provided with a liquid descending port, the liquid descending port is externally connected with a vertically arranged downcomer 4, the downcomer 4 extends downwards, a liquid sealing cup 5 is arranged below the downcomer 4, and one end, far away from the bottom plate 3b, of the downcomer 4 extends into the liquid sealing cup 5. In practical use, the liquid in the liquid seal cup 5 is always higher than the height of one end of the downcomer 4 far away from the bottom plate 3b, so that the liquid seal effect is achieved.
The working process of the embodiment is as follows:
The gas to be purified enters the vertical container tank 1 from the gas inlet 1a, flows upwards, then sequentially passes through the outer framework 3a, the 9 fiber layers, the inner framework and the tube plate 2, and then is discharged from the gas outlet 1c, wherein the 9 fiber layers are used for separating fog drops in the gas to be purified. When the gas to be purified containing the fog drops passes through the fiber bed, the fog drops are captured on the fiber bed through three mechanisms of inertial collision, direct interception and Brownian motion, are gradually condensed into large particles or liquid films, pass through the fiber bed under the push of airflow, and are discharged out of the bed layer of the fiber bed along the inner surface of the inner framework under the action of gravity. The layer close to the inner skeleton is a fiber layer with a larger diameter so as to promote liquid drainage and prevent the fog drops from being carried secondarily by airflow. The separated liquid is collected at the bottom of the vertical vessel 1, and finally discharged from the vertical vessel 1 through the liquid outlet 1 b.
[ example 2 ]
As shown in fig. 1, in embodiment 2, on the basis of embodiment 1, embodiment 2 further includes: outer washing unit, this outer washing unit set up the surface of keeping away from the inner frame at outer skeleton 3a, and outer washing unit sets up the one end that outer skeleton 3a is close to tube sheet 2, when the droplet is the dirt droplet, because the diameter of dirt droplet is great, probably can't pass the fiber bed and be detained outside outer skeleton 3a, if the dirt droplet is not in time clear up, can lead to the fiber bed to block up to influence separation efficiency.
Still be equipped with first reserve mouth 1d on the lateral wall of vessel 1, first reserve mouth 1d is located the downside of tube sheet 2 respectively, and first reserve mouth 1d is used for supplying outer washing device's external water pipe to pass.
[ example 3 ]
Embodiment 3 as shown in fig. 1, embodiment 3 is based on embodiment 1 or embodiment 2, and embodiment 3 further includes an inner washing device, the inner washing device is disposed on the surface of the inner frame away from the outer frame 3a, and the inner washing device is disposed at one end of the inner frame close to the tube plate 2. When smuggling dirt droplet secretly in the gas, wherein the less dirt droplet of diameter can stay on the inner frame after the fibre bed filters, and because the crystallization on the inner frame will be not handled for a long time to the salt composition that contains in the dirt droplet sometimes, leads to inner frame department to block up, influences the separation efficiency of fibre bed, at this moment, washes through the interior washing unit that sets up on the inner frame, in time washes the inner frame totally, avoids the crystallization.
And a second standby port 1e is also arranged on the side wall of the container tank 1, the second standby ports 1e are respectively positioned on the upper sides of the tube plates 2, and the second standby ports 1e are used for an external water pipe of the internal flushing device to pass through.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. a gas-liquid separation apparatus, comprising:
The side wall of the container tank is provided with a gas inlet and a liquid outlet, the top of the container tank is provided with a gas outlet, and the height of the liquid outlet is lower than that of the gas inlet;
A fiber bed structure disposed within the vessel tank, the fiber bed structure being located between the gas inlet and gas outlet;
the fiber bed structure comprises a fiber bed and a tube plate, and the fiber bed is arranged between the tube plate and the gas inlet;
The fiber bed comprises a cylindrical inner framework, at least 3 fiber layers wound on the inner framework and a cylindrical outer framework sleeved outside the fiber layers, one end of the inner framework is welded with the tube plate, and gas is discharged out of the container tank from a gas outlet after sequentially passing through the outer framework, the fiber layers, the inner framework and the tube plate;
the fiber bed also comprises a bottom plate, and the bottom plate is respectively fixedly connected with one ends of the inner framework and the outer framework, which are far away from the tube plate;
Every layer the fibrous layer all establishes through fibre spiral winding form on the inner frame, be located a plurality of the fibre of the middle one deck fibrous layer of fibrous layer adopts lyophobic material to make, hugs closely on the inner frame the fibrous diameter of fibrous layer is 100 ~ 300 um.
2. the gas-liquid separation device according to claim 1, characterized in that:
The bottom plate is provided with a liquid descending port, the liquid descending port is externally connected with a vertically arranged liquid descending pipe, a liquid sealing cup is arranged below the liquid descending pipe, and one end of the liquid descending pipe, which is far away from the bottom plate, extends into the liquid sealing cup.
3. The gas-liquid separation device according to claim 1, characterized in that:
the outer surfaces of the fibers of the fiber bed are coated with modified fluorine materials, and the fibers of the fiber bed are made of metal, glass fibers or polyester materials.
4. The gas-liquid separation device according to claim 1, characterized in that:
In a plurality of the fiber layers, except the fiber layers tightly attached to the inner framework, the diameters of the fibers of other fiber layers are all between 5 and 100 um.
5. The gas-liquid separation device according to claim 1, characterized in that:
The thickness of the fiber bed is 20-200 mm, and the density of the bed layer of the fiber bed is 100-500 kg/m3。
6. The gas-liquid separation device according to claim 1, further comprising:
the outer flushing device is arranged on the surface, away from the inner framework, of the outer framework, and the outer flushing device is arranged at one end, close to the tube plate, of the outer framework.
7. The gas-liquid separation device according to any one of claims 1 or 6, further comprising:
interior washing unit, interior washing unit sets up the surface of exoskeleton is kept away from to the inner frame, interior washing unit sets up the one end that the inner frame is close to the tube sheet.
CN201910810644.XA 2019-08-29 2019-08-29 Gas-liquid separation device Pending CN110575714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910810644.XA CN110575714A (en) 2019-08-29 2019-08-29 Gas-liquid separation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910810644.XA CN110575714A (en) 2019-08-29 2019-08-29 Gas-liquid separation device

Publications (1)

Publication Number Publication Date
CN110575714A true CN110575714A (en) 2019-12-17

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Application Number Title Priority Date Filing Date
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Country Link
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2915225Y (en) * 2006-03-28 2007-06-27 陈爱民 A fiber demister
CN201783272U (en) * 2010-08-20 2011-04-06 中国石油化工集团公司 Efficient fibered demisting element
CN103933792A (en) * 2014-05-09 2014-07-23 新乡市胜达过滤净化技术有限公司 High-precision gas-liquid coalescence dry gas seal filter element
CN104258653A (en) * 2014-09-25 2015-01-07 上海安赐机械设备有限公司 High-efficiency desulfurization tail gas demisting device and process
CN210814312U (en) * 2019-08-29 2020-06-23 上海安赐环保科技股份有限公司 Gas-liquid separation device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2915225Y (en) * 2006-03-28 2007-06-27 陈爱民 A fiber demister
CN201783272U (en) * 2010-08-20 2011-04-06 中国石油化工集团公司 Efficient fibered demisting element
CN103933792A (en) * 2014-05-09 2014-07-23 新乡市胜达过滤净化技术有限公司 High-precision gas-liquid coalescence dry gas seal filter element
CN104258653A (en) * 2014-09-25 2015-01-07 上海安赐机械设备有限公司 High-efficiency desulfurization tail gas demisting device and process
CN210814312U (en) * 2019-08-29 2020-06-23 上海安赐环保科技股份有限公司 Gas-liquid separation device

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