CN210674593U - Polytetrafluoroethylene membrane gas-liquid separation system - Google Patents
Polytetrafluoroethylene membrane gas-liquid separation system Download PDFInfo
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- CN210674593U CN210674593U CN201921323772.3U CN201921323772U CN210674593U CN 210674593 U CN210674593 U CN 210674593U CN 201921323772 U CN201921323772 U CN 201921323772U CN 210674593 U CN210674593 U CN 210674593U
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Abstract
The utility model relates to a gas filtration purifies technical field, especially relates to a polytetrafluoroethylene membrane gas-liquid separation system, including the parallelly connected separator of all the way or multichannel, characterized by: the separation device comprises a first separation tank and a second separation tank, wherein a first cylindrical mesh enclosure is arranged in the first separation tank and fixed on the inner side wall of the first separation tank, and a first filter membrane is attached to the inner side wall of the first cylindrical mesh enclosure; a second cylindrical mesh enclosure is arranged in the second separation tank, the second cylindrical mesh enclosure is fixed on the inner side wall of the second separation tank, and a second filter membrane is adhered to the inner side wall of the second cylindrical mesh enclosure; an upper communicating opening is formed in the side wall of the upper part of the first separation tank, and an air inlet communicated with the air inlet pipe is formed in the side wall of the lower part of the first separation tank; a lower communicating port is formed in the side wall of the lower part of the second separation tank and is communicated with the upper communicating port through a communicating pipe; an exhaust port is arranged on the side wall of the upper part of the second separation tank. The gas-liquid separation system is simple and firm in structure and good in separation effect on solid and liquid large-particle impurities.
Description
Technical Field
The utility model relates to a gas filtration purifies technical field, especially relates to a polytetrafluoroethylene membrane gas-liquid separation system.
Background
In the existing refinery gas and natural gas desulfurization and decarbonization process, an alcohol amine method is used as an efficient and mature technology and is widely applied to removing H in raw material gas2S and CO2An acid gas. Dry gas or liquefied gas from devices such as coking and catalysis in factories often carries particulate matters or liquid drop impurities such as coke powder, heavy hydrocarbon and compressor lubricating oil, and the impurities have the characteristics of wide particle size distribution and diversified forms, so that the separation treatment difficulty is high. The natural gas and the raw gas also tend to carry liquid drops and inorganic salt ions, and even form stable aerosol. The removal of tiny droplets and oil mist entrained in the gas has been a significant problem for a long time, and the cost of downstream production process and subsequent purification treatment is seriously affected. The circulating desulfurization amine liquid is 'blood' for normal operation of the desulfurization and decarburization device, and is an important guarantee for efficiently producing and purifying dry gas and liquefied gas. In order to better maintain the clean operation of the desulfurization and decarburization solvent, it is necessary to arrange an efficient pre-separation device at the front end of the contact between the raw material gas and the solvent so as to effectively remove the pollutants carried in the raw material gas and reduce the cost of rear-end solvent purification and replenishment.
The gas-solid-liquid separation equipment commonly used at present comprises a liquid separating tank, a cyclone separator, a baffle type separator, a demister and the like:
(1) the liquid separating tank is a vertical or horizontal container with large diameter and volume, when gas passes through the liquid separating tank, the volume expansion flow rate is reduced, and liquid drops are settled at the bottom of the tank under the action of gravity and are discharged; however, since the separation tank can generally separate only relatively large droplets of 300 μm or more, the separation effect is poor, and it is necessary to use the separation tank in combination with other separation equipment.
(2) The cyclone separator separates liquid drops from the airflow by the centrifugal force generated by the high-speed rotation of the gas in the separator, and the separated liquid drops are collected on the inner surface of the equipment and discharged by gravity; the device has better separation effect than a liquid separation tank, and can effectively separate liquid drops larger than 10 mu m. The cyclone separator has the advantages of small pressure drop and difficult blockage; the disadvantage is that the turndown ratio is small and the separation efficiency drops significantly when the gas flow is reduced.
(3) The baffle type separator is suitable for gas treatment with large flow and high liquid content, and if the gas flow speed is low, the separation efficiency is influenced.
The above separation apparatuses are suitable for separating large-sized droplets, and are not sufficiently effective for small-sized droplets (<10 μm). Compared with the above separation techniques, coalescence filtration is a more ideal gas pretreatment process. But the technology development and the process of the coalescer are limited, the application of domestic related products is not mature at present, the higher treatment requirements cannot be met, and the following two problems mainly exist: firstly, the purification precision is not enough, and secondly, the service life is limited. How to improve the two problems is an important prerequisite for improving the industrial application value of the coalescer and solving the efficient filtration and purification of gas in the desulfurization and decarburization process. Therefore, it is necessary and important to develop a gas-liquid separator which is durable and has high purification accuracy.
SUMMERY OF THE UTILITY MODEL
For solving the problem that proposes among the above-mentioned background art, the utility model provides a polytetrafluoroethylene membrane gas-liquid separation system, this gas-liquid separation system simple structure, firm, it is good to solid liquid state large granule impurity separation effect.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a polytetrafluoroethylene membrane gas-liquid separation system, includes the separator that connects in parallel of one way or multichannel, separator passes through intake pipe and air intake pump intercommunication, its characterized in that: the separation device comprises a first separation tank and a second separation tank, a first cylindrical mesh enclosure with an opening at the lower end is arranged in the first separation tank, the first cylindrical mesh enclosure is fixed on the inner side wall of the first separation tank through a first outer edge which is arranged at the lower end of the first cylindrical mesh enclosure and extends outwards in a clamping manner, and a first filter membrane is attached to the inner side wall of the first cylindrical mesh enclosure; a second cylindrical mesh enclosure with an opening at the lower end is arranged in the second separation tank, the second cylindrical mesh enclosure is fixed on the inner side wall of the second separation tank through a second outer edge which is arranged at the lower end of the second cylindrical mesh enclosure and extends outwards in a clamping manner, and a second filter membrane is attached to the inner side wall of the second cylindrical mesh enclosure; an upper communicating opening is formed in the side wall of the upper part of the first separation tank, an air inlet is formed in the side wall of the lower part of the first separation tank, one end of the air inlet pipe is communicated with the air inlet, and the other end of the air inlet pipe is connected with an air inlet pump; a lower communicating port is formed in the side wall of the lower part of the second separation tank and is communicated with the upper communicating port through a communicating pipe; an exhaust port is formed in the side wall of the upper part of the second separation tank, and an exhaust pipe is communicated with the exhaust port; liquid discharge ports are formed in the bottoms of the first separation tank and the second separation tank and communicated with a liquid discharge pipeline.
Preferably, the first filter membrane is a polytetrafluoroethylene filter membrane with a filter pore size of 5 microns, and the second filter membrane is a polytetrafluoroethylene filter membrane with a filter pore size of 1 micron.
Preferably, the first separation tank and the second separation tank are both provided with L-shaped air ducts, the lower end openings of the L-shaped air ducts in the first separation tank are communicated with the air inlet, and the upper end openings of the L-shaped air ducts in the first separation tank are upward and are positioned under the first cylindrical mesh enclosure; the lower end of the L-shaped air duct in the second separation tank is communicated with the lower communication port, and the upper end opening of the L-shaped air duct is upward and is positioned under the second cylindrical mesh enclosure.
Preferably, the opening at the upper end of the L-shaped air duct is trumpet-shaped.
Preferably, the first outer edge and the second outer edge are both arranged in an umbrella-shaped manner and are inclined downwards.
Preferably, the first outer edge is close to the position of the inner wall of the first separation tank and the second outer edge is close to the position of the inner wall of the second separation tank, and a plurality of water leakage holes are formed in the positions.
Preferably, the water leakage holes are arranged in a zigzag shape.
Preferably, the water leakage hole is filled with sponge.
Preferably, the first cylindrical mesh enclosure is constructed by a metal mesh of a 200-mesh bar type 316L stainless steel material, and the second cylindrical mesh enclosure is constructed by a metal mesh of a 100-mesh bar type 316L stainless steel material.
Preferably, the separation device is provided with two paths, and the two paths of separation devices are communicated with the air inlet pump through the air inlet pipe.
The utility model has the advantages that: 1) be linked together through first knockout drum and second knockout drum, can carry out the secondary to the feed gas that gets into separator and purify the filtration, purify the filtration more thoroughly to the solid liquid state impurity in the feed gas, the effect is better.
2) The filter membrane has the protection of cylindricality screen panel outward, makes the filter membrane difficult damaged in filtering process, and is more durable, and can make the filter membrane bear bigger atmospheric pressure upper limit to the convenient pressure that increases the feed gas that gets into this gas-liquid separation system, and then accelerates the speed that the feed gas passes through the filter membrane, improves this gas-liquid separation system's filtration efficiency.
3) The waste liquid filtered out from the gas-liquid separation system is conveniently discharged in time through the liquid discharge pipeline, and the interference to the feed gas filtered by the gas-liquid separation system caused by the stockpiling of the waste liquid is avoided.
In a word, this gas-liquid separation system simple structure, firm durable, it is good to gaseous filter effect, and filtration efficiency is high, easy operation, convenient to use is fit for popularizing and applying.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1 according to the present invention.
Wherein: 1-a first separation tank; 2-a second separation tank; 3-a first cylindrical mesh enclosure; 4-a first outer edge; 5-a first filter membrane; 6-a second cylindrical mesh enclosure; 7-a second outer edge; 8-a second filter membrane; 9-upper communication port; 10-an air inlet pipe; 11-an intake pump; 12-a lower communication port; 13-communicating tube; 14-an exhaust port; 15-an exhaust pipe; 16-a liquid drain port; 17-L-shaped airway; 18-water leakage holes; 20-a drainage pipeline; 21-a first valve; 101-separation device.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
A polytetrafluoroethylene membrane gas-liquid separation system is shown in figures 1 and 2 and comprises one or more separation devices 101 which are connected in parallel, wherein the separation devices 101 are communicated with an air inlet pump 11 through an air inlet pipe 10, each separation device 101 comprises a first separation tank 1 and a second separation tank 2, the first separation tank 1 and the second separation tank 2 are sealed through detachable top covers, a first cylindrical mesh enclosure 3 with an opening at the lower end is arranged in the first separation tank 1, the first cylindrical mesh enclosure 3 is detachably clamped and fixed in the middle of the inner side wall of the first separation tank 1 through a first outer edge 4 which extends outwards and is arranged at the lower end of the first cylindrical mesh enclosure 3, so that the first separation tank 1 is divided into an upper cavity and a lower cavity, and a first filter membrane 5 is attached to the inner side wall of the first cylindrical mesh enclosure 3; the first filter membrane 5 is a polytetrafluoroethylene filter membrane with a filter aperture of 5 microns, and can filter waste liquid drops or solid particles with the diameter larger than 5 microns in the raw material gas. A second cylindrical mesh enclosure 6 with an opening at the lower end is arranged in the second separation tank 2, the second cylindrical mesh enclosure 6 is detachably clamped and fixed on the inner side wall of the second separation tank 2 through a second outer edge 7 which extends outwards and is arranged at the lower end of the second cylindrical mesh enclosure 6, so that the second separation tank 2 is divided into an upper cavity and a lower cavity, and a second filter membrane 8 is attached to the inner side wall of the second cylindrical mesh enclosure 6; second filter membrane 8 is the polytetrafluoroethylene filtration membrane that filter aperture is 1 micron, and it can carry out the secondary filter to the feed gas through first knockout drum 1 to filter the waste liquid drop or the solid particle that the diameter is greater than 1 micron in the feed gas, thereby make the quality of feed gas higher, filter more thoroughly, the effect is better. An upper communicating port 9 is formed in the side wall of the upper part of the first separating tank 1, an air inlet communicated with an air inlet pipe 10 is formed in the side wall of the lower part of the first separating tank, one end of the air inlet pipe 10 is communicated with the air inlet, the other end of the air inlet pipe is connected with an air inlet pump 11, and a first valve 21 is arranged on the air inlet pipe 10; the raw gas to be filtered is firstly pumped into the first separation tank 1 through the air inlet pump 11, and the raw gas entering the first separation tank 1 is pressurized, so that the raw gas is easy to filter for the first time through the first filter membrane 5, and can quickly enter the second separation tank 2 under the action of pressure and complete secondary filtration through the second filter membrane 8; a lower communicating port 12 is formed in the side wall of the lower part of the second separation tank 2, and the lower communicating port 12 is communicated with the upper communicating port 9 through a communicating pipe 13; an exhaust port 14 is formed in the side wall of the upper part of the second separation tank 2, and an exhaust pipe 15 is communicated with the exhaust port 14; the filtered raw gas is sent to the production for use through the exhaust pipe 15. Liquid discharge ports 16 are formed in the bottoms of the first separation tank 1 and the second separation tank 2, and the liquid discharge ports 16 are communicated with a liquid discharge pipeline 20; the large-particle waste liquid intercepted by the first filter membrane 5 and the second filter membrane 8 is discharged from the drainage pipeline 20.
In this embodiment, L-shaped gas ducts 17 are arranged in the first separation tank 1 and the second separation tank 2, the lower end opening of the L-shaped gas duct 17 in the first separation tank 1 is communicated with the gas inlet 9, and the upper end opening is upward and is positioned right below the first cylindrical mesh enclosure 3; the lower end of an L-shaped air duct 17 in the second separation tank 2 is communicated with the lower communication port 12, and the upper end of the L-shaped air duct is opened upwards and is positioned right below the second cylindrical mesh enclosure 6. Through the setting of L type air duct 17, can make the feed gas faster contact with first filter membrane 5 or second filter membrane 8, and the contact is more abundant, improves the filtration efficiency of feed gas, has also reduced or even avoided the feed gas from the discharged possibility of leakage fluid dram 16.
In this embodiment, L type air duct 17 upper end opening part is the loudspeaker form, sets up like this and can play the diffusion to the feed gas that comes out from L type air duct 17, and the increase is with first filter membrane 5 or second filter membrane 8's area of contact for the filtration efficiency to the feed gas.
In this embodiment, the first outer edge 4 and the second outer edge 7 are both arranged in a downward inclination manner in a canopy shape. With this arrangement, the raw material gas remaining above the first cylindrical mesh enclosure 3 or the second cylindrical mesh enclosure 6 can be collected easily, and the droplets that have not yet entered the communication pipe 13 through the first filter membrane 5 or the droplets that have entered the exhaust pipe 15 through the second filter membrane 8 all flow down to the lowest position along the outer edge of the umbrella shape. In order to enable the liquid drops to be smoothly discharged so as to avoid influencing the normal filtration of the raw material gas, a plurality of water leakage holes 18 are formed in the positions, close to the inner wall of the first separation tank 1, of the first outer edge 4 and the positions, close to the inner wall of the second separation tank 2, of the second outer edge 7, and the liquid drops on the outer edge can be discharged through the water leakage holes 18.
In the present embodiment, in order to prevent the raw material gas from passing through the water leakage holes 18, the water leakage holes 18 are arranged in a zigzag shape. Further, the water leakage hole 18 is filled with sponge.
In this embodiment, the first cylindrical mesh enclosure 3 is constructed by a metal mesh made of 200-mesh bar type 316L stainless steel, and the second cylindrical mesh enclosure 6 is constructed by a metal mesh made of 100-mesh bar type 316L stainless steel, so that the first cylindrical mesh enclosure is firm and durable, and can protect the first filter membrane 5 and the second filter membrane 8.
In this embodiment, the separation device 101 has two paths, and the two paths of separation device 101 are both communicated with the intake pump 11 through the intake pipe 10. When the separation device 101 of one path needs to be cleaned or fails, the first valve 21 of the path can be closed, and the first valve 21 of the other path can be opened at the same time, so that the raw material gas is filtered by the separation device 101 of the other path.
The working mode and principle are as follows: during operation, the air inlet pump 11 is turned on, the raw material gas to be filtered is pumped into the lower part of the first separation tank 1, the raw material gas is pressurized, then the raw material gas is filtered by the first filter membrane 5 under the action of pressure, and liquid drops or solid particles larger than 5 micrometers in the raw material gas are intercepted and discharged through the liquid discharge pipeline 20. The raw material gas passing through the first filter membrane 5 enters the lower part of the second separation tank 2 through the communicating pipe 13, under the action of pressure, the raw material gas is filtered through the second filter membrane 8, liquid drops or solid particles larger than 1 micron in the raw material gas are intercepted and discharged through the liquid discharge pipeline 20, and the raw material gas passing through the second filter membrane 8 is conveyed to the production through the exhaust pipe for application.
When the separation device 101 of the path needs to be cleaned or fails, the first valve 21 in the path is closed and the first valve 21 in the other path of separation device 101 is opened, and the raw material gas is filtered by the other path of separation device 101, wherein the filtration modes of the two paths of separation devices 101 are the same.
The above embodiments are only used for illustrating the present invention, and not for limiting the present invention, and those skilled in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (10)
1. The utility model provides a polytetrafluoroethylene membrane gas-liquid separation system, includes separation device (101) that connect in parallel one way or multichannel, separation device (101) are through intake pipe (10) and air intake pump (11) intercommunication, its characterized in that: the separation device (101) comprises a first separation tank (1) and a second separation tank (2), a first cylindrical mesh enclosure (3) with an opening at the lower end is arranged in the first separation tank (1), the first cylindrical mesh enclosure (3) is clamped and fixed on the inner side wall of the first separation tank (1) through a first outer edge (4) which is arranged at the lower end of the first cylindrical mesh enclosure and extends outwards, and a first filter membrane (5) is attached to the inner side wall of the first cylindrical mesh enclosure (3); a second cylindrical mesh enclosure (6) with an opening at the lower end is arranged in the second separating tank (2), the second cylindrical mesh enclosure (6) is clamped and fixed on the inner side wall of the second separating tank (2) through a second outer edge (7) which is arranged at the lower end of the second cylindrical mesh enclosure and extends outwards, and a second filter membrane (8) is attached to the inner side wall of the second cylindrical mesh enclosure (6); an upper communicating opening (9) is formed in the side wall of the upper part of the first separating tank (1), an air inlet is formed in the side wall of the lower part of the first separating tank, one end of the air inlet pipe (10) is communicated with the air inlet, and the other end of the air inlet pipe is connected with an air inlet pump (11); a lower communicating port (12) is formed in the side wall of the lower part of the second separating tank (2), and the lower communicating port (12) is communicated with the upper communicating port (9) through a communicating pipe (13); an exhaust port (14) is formed in the side wall of the upper part of the second separation tank (2), and an exhaust pipe (15) is communicated with the exhaust port (14); liquid discharge ports (16) are formed in the bottoms of the first separation tank (1) and the second separation tank (2), and the liquid discharge ports (16) are communicated with a liquid discharge pipeline (20).
2. The polytetrafluoroethylene membrane gas-liquid separation system according to claim 1, wherein: the first filter membrane (5) is a polytetrafluoroethylene filter membrane with a filter pore size of 5 microns, and the second filter membrane (8) is a polytetrafluoroethylene filter membrane with a filter pore size of 1 micron.
3. The polytetrafluoroethylene membrane gas-liquid separation system according to claim 1, wherein: the first separation tank (1) and the second separation tank (2) are internally provided with L-shaped air guide pipes (17), the lower end openings of the L-shaped air guide pipes (17) in the first separation tank (1) are communicated with the air inlet, and the upper end openings are upward and are positioned under the first cylindrical mesh enclosure (3); the lower end of an L-shaped air duct (17) in the second separation tank (2) is communicated with the lower communication port (12), and the upper end of the L-shaped air duct is opened upwards and is positioned under the second cylindrical mesh enclosure (6).
4. A polytetrafluoroethylene membrane gas-liquid separation system according to claim 3, wherein: the opening of the upper end of the L-shaped air duct (17) is trumpet-shaped.
5. The polytetrafluoroethylene membrane gas-liquid separation system according to claim 1, wherein: the first outer edge (4) and the second outer edge (7) are both arranged in an umbrella-shaped downward inclined mode.
6. The polytetrafluoroethylene membrane gas-liquid separation system according to claim 5, wherein: the first outer edge (4) is close to the position of the inner wall of the first separation tank (1) and the second outer edge (7) is close to the position of the inner wall of the second separation tank (2) and is provided with a plurality of water leakage holes (18).
7. The polytetrafluoroethylene membrane gas-liquid separation system according to claim 6, wherein: the water leakage holes (18) are arranged in a zigzag shape.
8. The polytetrafluoroethylene membrane gas-liquid separation system according to claim 6, wherein: the water leakage holes (18) are filled with sponge.
9. The polytetrafluoroethylene membrane gas-liquid separation system according to claim 1, wherein: the first cylindrical mesh enclosure (3) is constructed by a metal mesh of a 200-mesh bar type 316L stainless steel material, and the second cylindrical mesh enclosure (6) is constructed by a metal mesh of a 100-mesh bar type 316L stainless steel material.
10. A polytetrafluoroethylene membrane gas-liquid separation system according to any one of claims 1 to 9, wherein: the separating device (101) is provided with two paths, and the two paths of separating device (101) are communicated with the air inlet pump (11) through the air inlet pipe (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921323772.3U CN210674593U (en) | 2019-08-15 | 2019-08-15 | Polytetrafluoroethylene membrane gas-liquid separation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921323772.3U CN210674593U (en) | 2019-08-15 | 2019-08-15 | Polytetrafluoroethylene membrane gas-liquid separation system |
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| Publication Number | Publication Date |
|---|---|
| CN210674593U true CN210674593U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921323772.3U Active CN210674593U (en) | 2019-08-15 | 2019-08-15 | Polytetrafluoroethylene membrane gas-liquid separation system |
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| CN (1) | CN210674593U (en) |
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2019
- 2019-08-15 CN CN201921323772.3U patent/CN210674593U/en active Active
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Effective date of registration: 20230726 Address after: North 2nd Floor, Building 1, No. 16, Longtan Road, Cangqian Street, Yuhang District, Hangzhou City, Zhejiang Province, 311121 Patentee after: ZHEJIANG HINEW ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 313112 Changxing County Huzhou town industrial concentration area, Huzhou, Zhejiang Patentee before: ZHEJIANG HAINIU ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
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