CN108371846B - Gas-liquid separation device - Google Patents
Gas-liquid separation device Download PDFInfo
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- CN108371846B CN108371846B CN201810287862.5A CN201810287862A CN108371846B CN 108371846 B CN108371846 B CN 108371846B CN 201810287862 A CN201810287862 A CN 201810287862A CN 108371846 B CN108371846 B CN 108371846B
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- 239000007788 liquid Substances 0.000 title claims abstract description 239
- 238000000926 separation method Methods 0.000 title claims abstract description 140
- 239000011796 hollow space material Substances 0.000 claims abstract description 147
- 230000005484 gravity Effects 0.000 claims abstract description 79
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000012510 hollow fiber Substances 0.000 claims abstract description 17
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 15
- 239000005871 repellent Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 102
- 239000000463 material Substances 0.000 description 11
- 239000012530 fluid Substances 0.000 description 10
- 239000000835 fiber Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/02—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising gravity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0005—Degasification of liquids with one or more auxiliary substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0031—Degasification of liquids by filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
Abstract
The application relates to a gas-liquid separation device, and belongs to the field of gas-liquid separation. Comprising the following steps: the gravity separation cavity is provided with a feed inlet, and the gas-liquid mixture enters; a first exhaust pipe is arranged above the gravity separation cavity, and a first valve is arranged on the first exhaust pipe; the lower part of the gravity separation cavity is a first liquid collecting area; the gas-liquid separation device also comprises a first hollow material which is a hydrophilic ultrafiltration hollow fiber or an inorganic ceramic ultrafiltration hollow tube; the first end of the first hollow material is a blind end and is positioned in the first liquid collecting area, and the second end of the first hollow material is connected with the first liquid discharge pipe and is used for discharging liquid out of the gravity separation cavity; and a second valve is arranged on the first liquid discharge pipe. The gas-liquid separation device can be well used for gas-liquid separation.
Description
Technical Field
The application relates to a gas-liquid separation device, and belongs to the field of gas-liquid separation.
Technical Field
At present, gas-liquid separation devices of gas supply or liquid supply equipment such as a gas generator, a pneumatic pump, a pressure dissolved gas tank and the like generally adopt the modes of gravity sedimentation or inertial dispersion and the like to dynamically separate gas and liquid, and then the separated liquid is continuously or discontinuously led to a liquid storage device through a float valve or an electromagnetic valve according to the accumulated liquid level. Under the conditions of continuous air supply or stable pressure air supply and the like, the devices often have incomplete air-liquid separation, poor air pressure stability or can not adapt to larger air pressure change; meanwhile, the existing gas-liquid separation device relates to parts such as pipelines, machinery, electric appliances and the like, and is complex in structure and low in reliability.
Disclosure of Invention
The application aims to provide a static gas-liquid separation device so as to better perform gas-liquid separation, and the gas-liquid separation device is not only large-sized, but also miniaturized and has wide application range.
A first embodiment of the present application provides a gas-liquid separation apparatus including:
the gravity separation cavity is provided with a feed inlet, and the gas-liquid mixture enters;
a first exhaust pipe is arranged above the gravity separation cavity and used for exhausting gas in the gravity separation cavity, and a first valve is arranged on the first exhaust pipe; the lower part of the gravity separation cavity is a first liquid collecting area;
the gas-liquid separation device also comprises a first hollow material, wherein the first hollow material is a hydrophilic ultrafiltration hollow fiber or an inorganic ceramic ultrafiltration hollow tube; the first end of the first hollow material is a blind end and is positioned in the first liquid collecting area, and the second end of the first hollow material is connected with the first liquid discharge pipe and is used for discharging liquid out of the gravity separation cavity;
and a second valve is arranged on the first liquid discharge pipe.
A second embodiment of the present application provides a second gas-liquid separation apparatus comprising:
the gravity separation cavity is provided with a feed inlet, and the gas-liquid mixture enters;
a second liquid discharge pipe is arranged below the gravity separation cavity and used for discharging liquid in the gravity separation cavity, and a third valve is arranged on the second liquid discharge pipe; the upper part of the gravity separation cavity 1 is a first gas collecting zone;
the gas-liquid separation device also comprises a second hollow material which is water-repellent ultrafiltration hollow fiber; the first end of the second hollow material is a blind end and is positioned in the first gas collecting zone, and the second end of the second hollow material is connected with the second exhaust pipe and is used for exhausting gas to the outside of the gravity separation cavity;
and a fourth valve is arranged on the second exhaust pipe.
A third embodiment of the present application provides a third gas-liquid separation apparatus comprising:
the gas dissolving tank is internally divided into a second gas collecting zone and a second liquid collecting zone, wherein the gas in the second gas collecting zone is solute gas, and the liquid in the second liquid collecting zone is gas solution;
a liquid collecting cavity is arranged below the second liquid collecting area, and a sealing part is arranged between the dissolved air tank and the liquid collecting cavity and used for preventing gas or liquid in the dissolved air tank from directly entering the liquid collecting cavity;
the gas-liquid separation device also comprises a third hollow material which is a hydrophilic ultrafiltration hollow fiber or an inorganic ceramic ultrafiltration hollow tube; two ends of the third hollow material are fixedly arranged on the sealing part respectively, an opening of the third hollow material is communicated with the dissolved air tank, and the middle section of the third hollow material is positioned in the liquid collecting cavity;
the liquid collecting cavity is connected with a third liquid discharge pipe, and a fifth valve is arranged on the third liquid discharge pipe.
The application has the beneficial effects that:
in the prior art, hydrophilic ultrafiltration hollow fibers, inorganic ceramic ultrafiltration hollow tubes, and water-repellent ultrafiltration hollow fibers are generally used only for filtering particles in liquids. In the application, on one hand, the three materials are used for separating the gas-liquid mixture, on the other hand, the two sides of the inner side and the outer side of the pipe wall of the hollow material cannot bear larger pressure difference, the gas-blocking or liquid-blocking pressure-resisting capacity of the hollow material depends on the maximum pore diameter of ultrafiltration micropores and the surface tension of liquid, namely, the working pressure difference when blocking gas or liquid is also greatly limited, so that the materials can not be almost completely applied to a gas-liquid separation device. In order to solve the problems, the application utilizes the selective passing characteristics of the two sides of the wall of the ultrafiltration material pipe to gas and liquid within a certain pressure difference range, and also needs to solve the problem that the gas-liquid separation device needs to adapt to a larger pressure working range, and further utilizes the back pressure valve scheme to be matched with the reasonable layout of the hollow fiber or the hollow pipe, thereby solving the defect that the two sides of the ultrafiltration material cannot bear the larger pressure difference, ensuring that the ultrafiltration material is qualified for the gas-liquid separation function of various pressure environments, and further solving the complexity and unreliability of the common gas-liquid separation device based on an electronic system and a mechanical system.
Brief description of the drawings
FIG. 1 is a first embodiment of a gas-liquid separation apparatus of the present application;
FIG. 2 is a second embodiment of the gas-liquid separation apparatus of the present application;
FIG. 3 is a third embodiment of the gas-liquid separation apparatus of the present application;
wherein: 1 gravity separation chamber, 2 feed inlet, 3 first vent pipe, 4 first valve, 5 first plenum, 501 liquid level, 6 first hollow material, 601 first end of first hollow material, 602 second end of first hollow material, 7 first drain, 8 second valve, 9 first sealing member, 10 second drain, 11 third valve, 12 first plenum, 13 second hollow material, 1301 first end of second hollow material, 1302 second end of second hollow material, 14 second vent pipe, 15 fourth valve, 16 second sealing member, 17 second plenum, 18 second plenum, 19 plenum, 20 seal, 21 third hollow material, 211 third hollow material end, 212 third hollow material opening, 213 third hollow material middle section, 22 third drain, 23 fifth valve.
Detailed description of the preferred embodiments
The following detailed description of the present application is provided in connection with specific embodiments, however, it should be understood that elements, structures, and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
In the description of the present application, it should be noted that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The above embodiments are merely illustrative of the preferred embodiments of the present application and are not intended to limit the scope of the present application, and various modifications and improvements made by those skilled in the art to the technical solution of the present application should fall within the protection scope defined by the claims of the present application without departing from the spirit of the design of the present application.
One embodiment of the application provides a gas-liquid separation device, which is shown in figure 1 and is provided with a gravity separation cavity 1, wherein a feed inlet 2 is arranged on the gravity separation cavity 1, and a gas-liquid mixture enters; a first exhaust pipe 3 is arranged above the gravity separation cavity 1 and can be used for exhausting gas in the gravity separation cavity 1, and a first valve 4 is arranged on the first exhaust pipe 3; the lower part of the gravity separation cavity 1 is provided with a first liquid collecting area 5; the gas-liquid separation device also comprises a first hollow material 6 which is a hydrophilic ultrafiltration hollow fiber or an inorganic ceramic ultrafiltration hollow tube, has a tubular structure, and can allow liquid to pass through the tube wall and can not allow gas to pass through within a certain pressure difference range; the first end 601 of the first hollow material 6 is a blind end, and is located in the first liquid collecting area 5, the second end 602 thereof is connected with the first liquid draining pipe 7, and is used for draining liquid out of the gravity separation cavity 1, and the first liquid draining pipe 7 is provided with a second valve 8.
The "certain pressure difference" in the "certain pressure difference range" refers to the pressure difference which can be born on two sides of the pipe wall of the first hollow material 6, and is determined by the characteristics of the first hollow material, such as parameters of the pore diameter of the material, the material quality of the material, the structural size of the hollow member, the surface tension of the separated liquid and the like; for example, when the first hollow material is hydrophilic ultrafiltration hollow fibers, the pore diameter of the first hollow material is 0.1 micron, the fiber diameter is 1 millimeter, the fiber structure support body is made of PVC plastic, and the liquid is water, the pressure difference is controlled to be 0-0.2MPa according to product test data, and if the pressure difference exceeds a certain limit value, the support body of the hollow fibers is deformed or gas can pass through the pipe wall; for another example, when the first hollow material is an inorganic ceramic ultrafiltration hollow tube, the aperture of the inorganic ceramic ultrafiltration hollow tube is 0.02 micron, and the support is a porous alumina sintered material, the pressure difference can be controlled to be 0-3MPa. The first hollow material can be selected according to actual needs, so that the certain pressure difference is determined.
The first end 601 of the first hollow material 6 is a blind end, for example, a sealed end, and may be sealed by the first sealing member 9. This ensures that liquid is introduced into the tube from the wall of the first hollow material 6, rather than through the opening at the first end 601, and that gas-liquid separation is well achieved.
The gas-liquid separation process of the gas-liquid separation device comprises the following steps: the gas-liquid mixture with certain pressure enters the gravity separation cavity 1 from the feed inlet 2, the flow rate of the gas-liquid mixture in the gravity separation cavity 1 is slowed down, the gas-liquid mixture is primarily separated under the action of gravity, and liquid drops separated by gravity move downwards and are concentrated at the lower part of the gravity separation cavity 1 to form a first liquid collecting area 5; the gas floats upwards and gathers on the upper part of the gravity separation cavity 1; when the gas builds up to a certain pressure, it can be discharged through the first valve 4.
As a preferred embodiment, the first end 601 to the second end 602 of the first hollow material are arranged upward, and particularly preferably, the second end 602 of the first hollow material 6 is located above the liquid surface 501 of the first liquid collecting area 5; the second end 602 is positioned high enough to allow the hollow material to exhaust the original gas from the interior of its hollow lumen without air lock and affecting the flow of liquid therein, while maintaining the hollow lumen full of liquid, ensuring its operational characteristics.
As a preferred embodiment, at least one of the first hollow materials 6, and particularly preferably the second end 602 of each first hollow material 6 is connected to the first liquid discharge pipe 7; in this way, the liquid from each first hollow material 6 can be collected into the first liquid discharge pipe 7, the number of the first liquid discharge pipes 7 is reduced, and the cost is saved. In a practical option, the amount of first hollow material 6 may be determined according to the amount of separation gas-liquid required.
As a preferred embodiment, the second valve 8 is a liquid back pressure valve, and the second valve 8 can automatically open the liquid discharge when the pressure provided by the liquid in the first liquid discharge pipe 7 is sufficiently high.
As a preferred embodiment, the first valve 4 is a gas back pressure valve, and the first valve 4 can automatically open the exhaust gas after the gas in the gravity separation chamber 1 is accumulated to a certain pressure.
The first valve 4 can control the fluid pressure in the gravity separation chamber 1, the opening pressure of the second valve 8 is smaller than the fluid pressure in the gravity separation chamber 1, and the pressure difference between the fluid pressure and the opening pressure of the second valve 8 is the working pressure difference between the inner side and the outer side of the pipe wall of the first hollow material 6; the pressure difference cannot be larger than the working pressure difference of the first hollow material, otherwise the first hollow material is damaged or the gas-liquid separation function is lost. If the first valve 4 is opened due to an improper setting of the opening pressure of the two valves, which may result in that the pressure of the gravity separation chamber 1 fails to open the second valve 8, the liquid in the gravity separation chamber 1 will also flow out of the first valve 4 together with the gas.
In other words, the opening pressure of the back pressure valve connected with the hollow material is lower than that of the back pressure valve not connected with the hollow material, and the difference between the two opening pressures is lower than the working pressure difference which can be born by the wall of the hollow material. If the working pressure difference which can be borne by the two sides of the wall of the hollow material tube is greater than the pressure in the gravity separation chamber 1, the back pressure valve to which the hollow material is connected can be used as a throttle valve or can be omitted.
Specifically, the opening pressure of the second valve 8 connected to the first hollow material 6 is lower than the opening pressure of the first valve 4 not connected to the first hollow material 6, and the two opening pressures form a first pressure difference, which is lower than a first working pressure difference that the first hollow material 6 can bear; the opening pressure of the fourth valve 15 connected with the second hollow material 13 is lower than the opening pressure of the third valve 11 not connected with the second hollow material 13, and the two opening pressures form a second pressure difference which is lower than the working pressure difference bearable by the second hollow material 13; the second valve 8 and/or the fourth valve 15 serve as throttle valves or are omitted when the difference in working pressure that can be taken over by the first hollow material and/or the second hollow material is greater than the pressure in the gravity separation chamber 1.
The gas-liquid separation device provided in the first embodiment is mainly suitable for the case of a gas-liquid mixture with a small liquid content and a large gas content, and is mainly used for first removing a small amount of liquid in the gas-liquid mixture, as shown in fig. 1.
The second embodiment of the present application provides a second gas-liquid separation device, which is mainly suitable for the situation that the gas content in the gas-liquid mixture is small and the liquid content is large, and is mainly used for first removing a small amount of gas in the gas-liquid mixture, as shown in fig. 2.
The gas-liquid separation device provided by the second embodiment is provided with a gravity separation cavity 1, wherein a feed inlet 2 is arranged on the gravity separation cavity 1, and a gas-liquid mixture enters; a second liquid discharge pipe 10 is arranged below the gravity separation cavity 1 and can be used for discharging liquid in the gravity separation cavity 1, and a third valve 11 is arranged on the second liquid discharge pipe 10; the upper part of the gravity separation chamber 1 is a first gas collection area 12; the gas-liquid separation device also comprises a second hollow material 13 which is a water-repellent ultrafiltration hollow fiber and has a tubular structure, and can allow gas to pass through the pipe wall and not allow liquid to pass through within a certain pressure difference range; the first end 1301 of the second hollow material 13 is a blind end, and is located in the first gas collecting region 12, the second end 1302 of the second hollow material is connected to the second exhaust pipe 14, and is used for exhausting gas to the outside of the gravity separation chamber 1, and a fourth valve 15 is disposed on the second exhaust pipe 14.
The method is similar to the first hollow material, the certain pressure difference in the certain pressure difference range is determined by the characteristics of the second hollow material, and the material can be selected according to actual requirements.
The first end 1301 of the second hollow material 13 is a blind end, for example, a sealed end, and may be sealed by a second sealing member 16. This ensures that gas is admitted into the tube from the wall of the second hollow material 13 rather than through the opening at the first end 1301, and gas-liquid separation is well achieved.
In the present embodiment, the gas discharge line and the liquid discharge line are positioned at the same position as the first embodiment, and a gas-liquid separator mainly including liquid discharge is formed.
In the gas-liquid separation device mainly used for liquid discharge, the gas-liquid separation process comprises the following steps: the gas separated in the gravity separation chamber 1 will penetrate the wall of the second hollow material 13 into the second exhaust pipe 14 under a certain pressure and be discharged to other devices through the fourth valve 15. The liquid separated in the gravity separation chamber 1 enters the second liquid discharge pipe 10 under a certain pressure, passes through the third valve 11 and is discharged to other devices.
As a preferred embodiment, the first end 1301 to the second end 1302 of the second hollow material 13 are arranged downward, and particularly preferably, the second end 1302 is located below the first gas collecting zone 12; this is mainly provided in order to allow the hollow material to drain away the original liquid inside its hollow lumen without affecting the flow of gas therein.
As a preferred embodiment, at least one of the second hollow materials 13, and particularly preferably the second ends 1302 of each second hollow material 13 are connected to a second exhaust pipe 14; thus, the gas from each second hollow material 13 can be led into the second exhaust pipe 14, the number of the second exhaust pipes 14 is reduced, and the cost is saved. In a practical option, the amount of the second hollow material 13 may be determined according to the amount of the separation gas-liquid required.
As a preferred embodiment, the third valve 11 is a liquid back pressure valve, and the third valve 11 automatically opens the drain when the pressure provided by the liquid in the gravity separation chamber 1 is sufficiently high.
As a preferred embodiment, the fourth valve 15 is a gas back pressure valve, and the fourth valve 15 can automatically open the exhaust gas after the gas in the second hollow material 13 is accumulated to a certain pressure.
The third valve 11 can control the fluid pressure in the gravity separation chamber 1, the opening pressure of the fourth valve 15 is smaller than the fluid pressure in the gravity separation chamber 1, and the pressure difference between the fluid pressure and the opening pressure of the fourth valve 15 is the working pressure difference between the inner side and the outer side of the wall of the second hollow material 13, and the pressure difference cannot be larger than the working pressure difference of the second hollow material, so that the second hollow material cannot be damaged. If the third valve 11 is opened due to an improper setting of the opening pressures of the two valves, which may result in that the pressure in the gravity separation chamber 1 fails to open the fourth valve 15, the liquid in the gravity separation chamber 1 will also flow out of the third valve 11 together with the gas.
Since both the first hollow material and the second hollow material are liquid or gas blocking or permeation characteristics by the surface tension of the liquid, the inner and outer sides of the pipe walls cannot bear excessive pressure difference, and when the pressure difference is excessive, the gas-liquid separation characteristics of the fibers can be disabled. In order to solve the problem, when the fluid pressure distribution of the system exceeds the working range of the fiber, a liquid back pressure valve and a gas back pressure valve are respectively arranged on the liquid discharge pipe and the exhaust pipe, and the two back pressure valves can respectively keep the working pressure difference at two sides of the pipe wall of the two hollow pipes within a reasonable range, so that the gas-liquid separation device can adapt to the working pressure of any gas and liquid.
The first embodiment and the second embodiment, although the implemented components are different, the implemented principle is basically communicated, and only the gas-liquid separation is performed by adopting a gas-liquid exchange mode.
A third embodiment of the present application provides a third gas-liquid separation device, which can be regarded as a modification of the first embodiment, and as shown in fig. 3, the gas-liquid separation device includes a dissolved gas tank, and a second gas collecting region 17 and a second liquid collecting region 18 are separated in the dissolved gas tank, wherein the gas in the second gas collecting region 17 is solute gas, and the liquid in the second liquid collecting region 18 is gas solution; a liquid collecting cavity 19 is arranged below the second liquid collecting area 18, and a sealing part 20 is arranged between the dissolved air tank and the liquid collecting cavity 19 and used for preventing gas or liquid in the dissolved air tank from directly entering the liquid collecting cavity 19; the gas-liquid separation device also comprises a third hollow material 21 which is a hydrophilic ultrafiltration hollow fiber or inorganic ceramic ultrafiltration hollow tube and has a tubular structure, and can allow liquid to pass through the tube wall, and the two sides of the tube wall do not allow gas to pass through within a certain pressure difference range; the two ends 211 of the third hollow material 21 are respectively fixedly arranged on the sealing part 20, the openings 212 at the two ends of the third hollow material 21 are communicated with the dissolved air tank, the gas liquid in the dissolved air tank is allowed to enter the pipe of the third hollow material 21, and the middle section 213 of the third hollow material 21 is positioned in the liquid collecting cavity 19; the liquid collecting cavity 19 is connected with a third liquid discharging pipe 22, and a fifth valve 23 is arranged on the liquid collecting cavity.
The same applies to the first hollow material, and the "certain pressure difference" in the "certain pressure difference range" is determined by the characteristics of the third hollow material. The selection of the material can be performed according to the actual needs.
In this embodiment, the dissolved air tank may be a pressure dissolved air tank, as shown in fig. 3, and such a dissolved air tank generally can only discharge a gas solution, but cannot discharge solute gas inside. The gas solution and solute gas are stored in the gas dissolving tank, and in order to improve the gas dissolving amount, a certain pressure is maintained in the gas dissolving tank.
Thus, as a preferred embodiment, the fifth valve 23 is a liquid back pressure valve or a throttle valve; the opening pressure of the fifth valve 23 is mainly used for reducing the pressure difference at two sides of the wall of the third hollow material pipe, the liquid in the dissolved air tank can be discharged to the outside of the tank through the fifth valve 23, and if the pressure in the dissolved air tank is lower than the pressure difference which can be born at two sides of the wall of the third hollow material pipe, the fifth valve 23 can be used as a throttle valve.
At least one of the third hollow materials 21 is provided. The greater the amount of third hollow material 21, the greater its contact area with the liquid collection chamber 19, the more advantageous the diffusion of the gaseous solution coming from the tank into the liquid collection chamber 19, and the reduction of the actual pressure difference across the walls of the third hollow material tube. Furthermore, the intermediate section 213 may be provided long enough to increase the contact area, and in practice the amount of fluid flow through the hollow material should be considered to determine the size of the hollow material.
The gas-liquid separation process of the present embodiment is substantially as follows: the gas solution with a certain pressure in the second liquid collecting zone 18 will pass through the wall of the third hollow material 21, so that the liquid escapes into the liquid collecting cavity 19 and is discharged to the designated equipment through the third liquid discharge pipe 22 and the liquid back pressure valve 23. When the consumption of the gas solution in the second gas collecting area 18 is completed or the gas dissolving tank is inclined so that the gas solution cannot flow out from the bottom, the third hollow material 21 prevents the solute gas in the second gas collecting area 17 from escaping into the liquid collecting cavity 19, thereby ensuring the safety and the working performance of the equipment.
From the first embodiment to the third embodiment, it can be seen that both external and internal pressure methods can be used for the use of the fibers, i.e. the fluid can flow from the outside through the wall of the hollow material to the inside (as in the first and second embodiments) and from the inside through the wall of the hollow material to the outside (as in the third embodiment).
The application is further described below in connection with examples which are, however, merely for the purpose of illustration and should not be construed as limiting the application.
Example 1:
as shown in fig. 1, a gas-liquid separation device comprises a gravity separation cavity 1, wherein a feed inlet 2 is arranged at the position approximately at the middle upper part of the gravity separation cavity 1; a first exhaust pipe 3 is arranged above the gravity separation cavity 1, and a first valve 4 is arranged on the first exhaust pipe and is a gas back pressure valve; the lower part of the gravity separation cavity 1 is provided with a first liquid collecting area 5, and the first liquid collecting area 5 is provided with a liquid level 501; the gas-liquid separation device further comprises a first hollow material 6, wherein the first hollow material 6 is a hydrophilic ultrafiltration hollow fiber or an inorganic ceramic ultrafiltration hollow tube; the first end 601 of the first hollow material 6 is a closed end and is located below the liquid level 501 of the first liquid collecting area, and the second end 602 of the first hollow material 6 is arranged upward and is located higher than the first end 601; the second end 602 is connected to the first drain 7, and as can be seen in fig. 1, the second end 602 and the first drain 7 are located in the middle upper part of the gravity separation chamber 1, the first drain 7 extends out of the gravity separation chamber 1, and a second valve 8 is provided thereon, which is a liquid back pressure valve.
The gas-liquid mixture with pressure enters the gravity separation cavity 1 from the feed inlet 2, the flow speed is slowed down, and the gas-liquid mixture is primarily separated under the action of gravity; the separated gas gathers upward in the upper part of the gravity separation chamber 1, the separated liquid (containing gas) moves downward and gathers in the first liquid collecting area 5, then the liquid enters the first hollow material 6 (the liquid in the first hollow material 6 contains almost no gas), and ascends from the first end 601 to the second end 602 to reach the first liquid discharge pipe 7, when the liquid pressure is large enough, the second valve 8 is opened, and the liquid is discharged; when the gas pressure reaches the opening value of the first valve 4 (higher than the pre-valve pressure of the second valve 8), the first valve 4 is automatically opened to perform the exhaust.
Example 2
As shown in fig. 2, a gas-liquid separation device comprises a gravity separation cavity 1, wherein a feed inlet 2 is arranged on the gravity separation cavity 1; a second liquid discharge pipe 10 is arranged below the gravity separation cavity 1, and a third valve 11 is arranged on the second liquid discharge pipe and is a liquid back pressure valve; the upper part of the gravity separation chamber 1 is a first gas collection area 12; the device further comprises a second hollow material 13, the second hollow material 13 being water-repellent ultrafiltration hollow fibers; the first end 1301 of the second hollow material 13 is a closed end, and is located in the first gas collecting region 12, and the second end 1302 of the second hollow material 13 is arranged downward and is lower than the first end 1301; the second end 1302 is connected to a second exhaust pipe 14. As can be seen in fig. 2, the second end 1302 and the second exhaust pipe 14 are located in the middle lower part of the gravity separation chamber 1, the second exhaust pipe 14 extends out of the gravity separation chamber 1, and a fourth valve 15 is provided thereon, which is a gas back pressure valve.
The gas-liquid mixture with pressure enters the gravity separation cavity 1 from the feed inlet 2, the flow speed is slowed down, and the gas-liquid mixture is primarily separated under the action of gravity; the separated gas (containing liquid) moves upwards, gathers in the first gas collecting zone 12, then the gas enters the second hollow material 13 (the gas in the second hollow material 13 contains little liquid), and descends from the first end 1301 to the second end 1302 to reach the second exhaust pipe 14, when the gas pressure is large enough, the fourth valve 15 is opened, and the gas is discharged; the separated liquid is collected downwards in the lower part of the gravity separation chamber 1, and when the liquid pressure is high enough (higher than the valve front pressure of the fourth valve 15), the third valve 11 is automatically opened to drain.
Example 3
As shown in fig. 3, a gas-liquid separation device comprises a dissolved gas tank, wherein the upper part of the dissolved gas tank is provided with a second gas collecting zone 17, the lower part of the dissolved gas tank is provided with a second liquid collecting zone 18, a liquid collecting cavity 19 is arranged below the dissolved gas tank, and a sealing part 20 is arranged between the dissolved gas tank and the liquid collecting cavity; the device also comprises a third hollow material 21 which is a hydrophilic ultrafiltration hollow fiber or inorganic ceramic ultrafiltration hollow tube; both ends of the third hollow material 21 are mounted on the sealing part 20, and an opening 212 of the third hollow material 21 is communicated with the dissolved air tank to allow liquid in the dissolved air tank to enter the third hollow material 21, and a middle section 213 of the third hollow material 21 extends into the liquid collecting cavity 19; the liquid collecting cavity 19 is connected to a third drain pipe 22, on which a fifth valve 23 is arranged, which is a liquid back pressure valve.
The third hollow material 21 has several pieces, only two of which are shown in fig. 3, each of which is independently mounted on the sealing portion 20 and extends into the liquid collecting chamber 19.
The second gas collecting area 17 is filled with solute gas, and the second liquid collecting area 18 is filled with gas solution, for example, the solute gas can be carbon dioxide, and the gas solution is water; or the solute gas may be hydrogen and the gas solution water; the gas-dissolved tank itself has pressure inside, and the gas liquid in the gas-dissolved tank cannot directly enter the liquid collecting cavity 19 due to the presence of the sealing part 20, but the gas liquid in the gas-dissolved tank can enter the third hollow material 21 through the opening of the third hollow material 21 and then permeate into the liquid collecting cavity 19 at the intermediate section 213; the pressure of the dissolved air tank can open the fifth valve 23, and the liquid in the liquid collecting cavity 19 is discharged through the third liquid discharge pipe 22. Even if the dissolved air tank in the embodiment is overturned, the internal gas cannot leak. In this embodiment, the gas in the dissolved air tank does not need to be discharged, and the opening pressure of the fifth valve 23 is mainly used to reduce the pressure difference on two sides of the wall of the third hollow material, and if the working pressure difference that can be tolerated by the wall of the hollow material is greater than the fluid pressure in the dissolved air tank, the fifth valve 23 can be used as a throttle valve.
Claims (9)
1. A gas-liquid separation apparatus, comprising:
a gravity separation cavity (1), wherein a feed inlet (2) is arranged on the gravity separation cavity (1), and a gas-liquid mixture enters;
a first exhaust pipe (3) is arranged above the gravity separation cavity (1) and is used for exhausting gas in the gravity separation cavity (1), and a first valve (4) is arranged on the first exhaust pipe (3); the lower part of the gravity separation cavity (1) is provided with a first liquid collecting area (5);
the gas-liquid separation device also comprises a first hollow material (6) which is a hydrophilic ultrafiltration hollow fiber or inorganic ceramic ultrafiltration hollow tube; the first end (601) of the first hollow material (6) is a blind end and is positioned in the first liquid collecting area (5), and the second end (602) of the first hollow material (6) is connected with the first liquid discharge pipe (7) and is used for discharging liquid out of the gravity separation cavity (1);
the first liquid discharge pipe (7) is provided with a second valve (8);
or alternatively, the process may be performed,
the gas-liquid separation device comprises:
a gravity separation cavity (1), wherein a feed inlet (2) is arranged on the gravity separation cavity (1), and a gas-liquid mixture enters;
a second liquid discharge pipe (10) is arranged below the gravity separation cavity (1) and is used for discharging liquid in the gravity separation cavity (1), and a third valve (11) is arranged on the second liquid discharge pipe (10); the upper part of the gravity separation cavity (1) is a first gas collection area (12);
the gas-liquid separation device also comprises a second hollow material (13) which is water-repellent ultrafiltration hollow fiber; the first end (1301) of the second hollow material (13) is a blind end and is positioned in the first gas collecting area (12), and the second end (1302) of the second hollow material (13) is connected with the second exhaust pipe (14) and is used for exhausting gas to the outside of the gravity separation cavity (1);
the second exhaust pipe (14) is provided with a fourth valve (15).
2. The gas-liquid separation device according to claim 1, characterized in that the first valve (4) is a gas back pressure valve and the second valve (8) is a liquid back pressure valve; the third valve (11) is a liquid back pressure valve, and the fourth valve (15) is a gas back pressure valve;
the opening pressure of a second valve (8) connected with the first hollow material (6) is lower than the opening pressure of a first valve (4) not connected with the first hollow material (6), the two opening pressures form a first pressure difference, and the first pressure difference is lower than a first working pressure difference which can be born by the first hollow material (6); the opening pressure of a fourth valve (15) connected with the second hollow material (13) is lower than the opening pressure of a third valve (11) not connected with the second hollow material (13), the two opening pressures form a second pressure difference, and the second pressure difference is lower than the working pressure difference born by the second hollow material (13);
when the difference between the working pressures which can be borne by the first hollow material and/or the second hollow material is greater than the pressure in the gravity separation chamber (1), the second valve (8) and/or the fourth valve (15) are used as throttle valves or are omitted.
3. A gas-liquid separation device according to any one of claims 1 or 2, characterized in that the blind end of the first hollow material (6) is a sealed end or is sealed with a first sealing member (9); the blind end of the second hollow material (13) is a sealing end or is sealed by a second sealing component (16).
4. The gas-liquid separation device according to any one of claims 1 or 2, wherein the first end (601) to the second end (602) of the first hollow material are arranged upstream; the first end (1301) to the second end (1302) of the second hollow material are arranged downstream.
5. The gas-liquid separation device according to claim 4, wherein the second end (602) of the first hollow material is located above the liquid level of the first liquid collecting zone (5); the second end (1302) of the second hollow material is located below the first plenum (12).
6. The gas-liquid separation device according to any one of claims 1 or 2, wherein at least one of the first hollow materials (6) is present; at least one second hollow material (13) is provided.
7. The gas-liquid separation device according to claim 6, wherein the second end (602) of each first hollow material is connected to a first drain (7); the second end (1302) of each second hollow material is connected to a second exhaust pipe (14).
8. The gas-liquid separation device according to claim 4, characterized in that said first hollow material (6) has at least one; at least one second hollow material (13) is provided.
9. The gas-liquid separation device according to claim 8, wherein the second end (602) of each first hollow material is connected to a first drain (7); the second end (1302) of each second hollow material is connected to a second exhaust pipe (14).
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| CN202310807756.6A CN117398770A (en) | 2018-03-30 | 2018-03-30 | Gas-liquid separation device |
| CN201810287862.5A CN108371846B (en) | 2018-03-30 | 2018-03-30 | Gas-liquid separation device |
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| CN201810287862.5A CN108371846B (en) | 2018-03-30 | 2018-03-30 | Gas-liquid separation device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108371846A (en) | 2018-08-07 |
| CN117398770A (en) | 2024-01-16 |
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