CN108371846A - Gas-liquid separation device - Google Patents
Gas-liquid separation device Download PDFInfo
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- CN108371846A CN108371846A CN201810287862.5A CN201810287862A CN108371846A CN 108371846 A CN108371846 A CN 108371846A CN 201810287862 A CN201810287862 A CN 201810287862A CN 108371846 A CN108371846 A CN 108371846A
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- 239000007788 liquid Substances 0.000 title claims abstract description 247
- 238000000926 separation method Methods 0.000 title claims abstract description 142
- 239000011796 hollow space material Substances 0.000 claims abstract description 151
- 230000005484 gravity Effects 0.000 claims abstract description 83
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 239000012510 hollow fiber Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 12
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 12
- 239000000835 fiber Substances 0.000 abstract description 6
- 210000004534 cecum Anatomy 0.000 abstract 1
- 230000010148 water-pollination Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 113
- 239000000463 material Substances 0.000 description 12
- 239000011148 porous material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 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
- 238000000034 method Methods 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
- 239000006185 dispersion Substances 0.000 description 1
- 230000002349 favourable effect Effects 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
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of gas-liquid separation devices, belong to gas-liquid separation field.Including：Gravity Separation chamber, which is provided with feed inlet, enter for gas-liquid mixture；The top of Gravity Separation chamber is equipped with downtake pipe, which is provided with the first valve；The lower part of Gravity Separation chamber is the first liquid collecting zone；The gas-liquid separation device further includes the first hollow material, is hydrophily ultrafiltration hollow fibre or inorganic ceramic ultrafiltration hollow pipe；The first end of first hollow material is cecum, is located in the first liquid collecting zone, the second end of first hollow material is connected with the first drain pipe, for exhausting the fluid into other than Gravity Separation chamber；First drain pipe is equipped with the second valve.This gas-liquid separation device can perform well in gas-liquid separation.
Description
Technical Field
The invention 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 gravity settling or inertial dispersion and other modes to dynamically separate gas and liquid, and then continuously or discontinuously drain the separated liquid to a liquid storage device through a float valve or an electromagnetic valve according to the level of accumulated liquid. Under the conditions of continuous air supply or pressure-stabilizing air supply, the devices often have incomplete gas-liquid separation, poor air pressure stability or incapability of adapting 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 has a complex structure and low reliability.
Disclosure of Invention
The purpose of the present application is to provide a static gas-liquid separation device that can perform gas-liquid separation better, and that is not only adequate for upsizing but also can be miniaturized, and that has a wide range of applications.
A first embodiment of the present application provides a gas-liquid separation device including:
the gravity separation cavity is provided with a feed inlet for feeding a gas-liquid mixture;
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 hydrophilic ultrafiltration hollow fibers or inorganic ceramic ultrafiltration hollow tubes; 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 discharging 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 device, including:
the gravity separation cavity is provided with a feed inlet for feeding a gas-liquid mixture;
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 collection area;
the gas-liquid separation device also comprises a second hollow material which is a hydrophobic ultrafiltration hollow fiber; the first end of the second hollow material is a blind end and is positioned in the first gas collection area, and the second end of the second hollow material is connected with a second exhaust pipe and is used for exhausting gas out 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 device, including:
the gas dissolving tank is internally divided into a second gas collecting area and a second liquid collecting area, wherein the gas in the second gas collecting area is solute gas, and the liquid in the second liquid collecting area 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 hydrophilic ultrafiltration hollow fiber or an inorganic ceramic ultrafiltration hollow tube; two ends of the third hollow material are respectively and fixedly arranged on the sealing part, 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 collection cavity is connected with a third liquid discharge pipe, and a fifth valve is arranged on the third liquid discharge pipe.
The beneficial effect of this application:
in the prior art, hydrophilic ultrafiltration hollow fibers, inorganic ceramic ultrafiltration hollow tubes, and hydrophobic ultrafiltration hollow fibers are generally used only for filtering particles in liquids. In the application, on one hand, the three materials are considered to be used for separating gas-liquid mixture, on the other hand, the inner side and the outer side of the pipe wall of the hollow material cannot bear large pressure difference, the pressure resistance of gas blocking or liquid blocking depends on the maximum pore diameter of the ultrafiltration micropore and the surface tension of liquid, namely the working pressure difference of blocked gas or liquid is also greatly limited, and therefore the materials can hardly be completely applied to a gas-liquid separation device. In order to solve the problems, the gas-liquid separation device further needs to adapt to a larger pressure working range by utilizing the selective passing characteristic of the two sides of the pipe wall of the ultrafiltration material to gas and liquid in a certain pressure difference range, and the defect that the two sides of the ultrafiltration material cannot bear larger pressure difference is further overcome by utilizing a back pressure valve scheme and matching with the reasonable layout of the hollow fibers or the hollow pipes, so that the ultrafiltration material can be competent for the gas-liquid separation function in various pressure environments, and the complexity and the unreliability of a common gas-liquid separation device based on an electronic system and a mechanical system are further solved.
Brief description of the drawings
FIG. 1 is a first embodiment of a gas-liquid separation apparatus according to 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 separator of the present application;
wherein: 1 gravity separation chamber, 2 feed inlet, 3 first drain, 4 first valve, 5 first drain, 501 liquid level, 6 first hollow material, 601 first hollow material first end, 602 first hollow material second end, 7 first drain, 8 second valve, 9 first seal, 10 second drain, 11 third valve, 12 first drain, 13 second hollow material, 1301 second hollow material first end, 1302 second hollow material second end, 14 second drain, 15 fourth valve, 16 second seal, 17 second drain, 18 second drain, 19 liquid collection chamber, 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 technical solutions of the present application are explained in detail below with reference to 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 is 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 embodiments described above are merely preferred embodiments of the present application, and are not intended to limit the scope of the present application, and various modifications and improvements made to the technical solutions of the present application by those skilled in the art without departing from the spirit of the present application should fall within the protection scope defined by the claims of the present application.
One embodiment of the present application provides a gas-liquid separation apparatus, as shown in fig. 1, having a gravity separation chamber 1, wherein a feed inlet 2 is provided on the gravity separation chamber 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 hydrophilic ultrafiltration hollow fiber or inorganic ceramic ultrafiltration hollow tube, is of a tubular structure, can allow liquid to pass through the tube wall, and cannot 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 of the first hollow material is connected with the first liquid discharging pipe 7 and is used for discharging liquid to the outside of the gravity separation cavity 1, and the first liquid discharging pipe 7 is provided with a second valve 8.
The "constant pressure difference" in the "constant pressure difference range" refers to the pressure difference that can be borne by the 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 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 other parameters; 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 of the first hollow material is 1 millimeter, the material of the fiber structure support is PVC plastic, and the liquid is water, the "constant pressure difference" needs to be controlled to be 0-0.2MPa according to product test data, and if the constant pressure difference exceeds a certain limit value, the support of the hollow fibers is deformed or gas can penetrate through the tube wall; for another example, when the first hollow material is an inorganic ceramic ultrafiltration hollow tube with a pore size of 0.02 μm and the support is a porous alumina sintered material, the "constant pressure difference" can be controlled to be 0-3 MPa. The first hollow material can be selected according to actual requirements, 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 a first sealing member 9. This ensures that liquid enters the tube from the wall of the first hollow member 6 rather than passing through the opening in the first end 601, which provides good gas-liquid separation.
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 feeding hole 2, the flow speed of the gas-liquid mixture in the gravity separation cavity 1 is slowed, the gas-liquid mixture is primarily separated under the action of gravity, liquid drops separated by gravity move downwards and are concentrated at the lower part of the gravity separation cavity 1, and a first liquid collecting area 5 is formed; the gas floats upwards and is gathered at the upper part of the gravity separation cavity 1; when the gas has built up to a certain pressure, it can be discharged through the first valve 4.
In a preferred embodiment, the first end 601 to the second end 602 of the first hollow material are arranged upward, and it is especially preferred that the second end 602 of the first hollow material 6 is located above the liquid level 501 of the first liquid collecting area 5; the second end 602 is set high enough to allow the hollow material to exhaust the original gas inside the hollow tube, without air lock, without affecting the flow of liquid inside the hollow tube, and to keep the hollow tube filled with liquid to ensure its working characteristics.
In a preferred embodiment, the second end 602 of at least one, and particularly preferably each, first hollow material 6 is connected to the first drain pipe 7; therefore, the liquid from each first hollow material 6 can be converged into the first liquid discharge pipe 7, the number of the first liquid discharge pipes 7 is reduced, and the cost is saved. In practical selection, the amount of the first hollow material 6 may be determined according to the amount of the gas and liquid to be separated.
In 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.
In a preferred embodiment, the first valve 4 is a gas back pressure valve, and the first valve 4 can automatically open to 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 cavity 1, the opening pressure of the second valve 8 is smaller than the fluid pressure in the gravity separation cavity 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 pressure in the gravity separation chamber 1 fails to open the second valve 8 and opens the first valve 4 due to improper opening pressure settings of the two valves, the liquid in the gravity separation chamber 1 will also flow out of the first valve 4 along with the gas.
In other words, the opening pressure of the backpressure valve connected with the hollow material is lower than that of the backpressure valve not connected with the hollow material, and the difference value of the two opening pressures is lower than the working pressure difference born by the pipe wall of the hollow material. If the working pressure difference which can be borne by the two sides of the pipe wall of the hollow material is larger than the pressure in the gravity separation cavity 1, the backpressure valve connected with the hollow material can be used as a check valve or can be cancelled.
Specifically, the opening pressure of the second valve 8 connected with the first hollow material 6 is lower than the opening pressure of the 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 borne by the first hollow material 6; 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, the two opening pressures form a second pressure difference, and the second pressure difference is lower than the working pressure difference which can be borne by the second hollow material 13; when the difference in operating pressure that can be withstood on both sides of 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/is used as a check valve or eliminated.
The gas-liquid separation apparatus according to the first embodiment is mainly suitable for use in a case where the gas-liquid mixture contains a large amount of gas and a small amount of liquid, and is mainly used to remove a small amount of liquid from the gas-liquid mixture, as shown in fig. 1.
A second embodiment of the present application provides a second gas-liquid separation device, which is mainly suitable for the case where the gas content in the gas-liquid mixture is low and the liquid content is high, mainly for removing a small amount of gas from 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 the gravity separation cavity; 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 cavity 1 is provided with a first gas collection area 12; the gas-liquid separation device also comprises a second hollow material 13 which is a hydrophobic ultrafiltration hollow fiber and is of a tubular structure, and gas can be allowed to pass through the pipe wall, and liquid cannot be allowed to pass through the pipe wall 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 a second exhaust pipe 14 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 "constant pressure difference" in the "constant pressure difference range" is determined by the characteristics of the second hollow material, and the material can be selected according to the actual requirement, similarly to the first hollow material.
The first end 1301 of the second hollow material 13 is blind, for example, may be a sealed end, and may also be sealed with a second sealing member 16. This ensures that gas enters the tube from the wall of the second hollow material 13, rather than passing through the opening in the first end 1301, which provides good gas-liquid separation.
In the present embodiment, the gas discharge line and the liquid discharge line are replaced with each other as compared with the first embodiment, and a gas-liquid separation device mainly based on liquid discharge is formed.
In the gas-liquid separation device mainly based on 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 gas outlet pipe 14 under a certain pressure, and will be discharged to other equipment through the fourth valve 15. The liquid separated in the gravity separation chamber 1 enters a second liquid discharge pipe 10 under a certain pressure, passes through a third valve 11, and is discharged to other equipment.
In a preferred embodiment, the first end 1301 to the second end 1302 of the second hollow material 13 are arranged downward, and it is particularly preferred that the second end 1302 is located below the first gas collecting area 12; this arrangement is primarily intended to allow the hollow material to drain away the original liquid within its hollow lumen without affecting the flow of gas therein.
In a preferred embodiment, the second end 1302 of at least one, and particularly preferably each, second hollow material 13 is connected to the second exhaust pipe 14; in this way, the gas from each second hollow material 13 can be converged into the second exhaust pipe 14, so that the number of the second exhaust pipes 14 is reduced, and the cost is saved. In practical selection, the amount of the second hollow material 13 may be determined according to the amount of the gas and liquid to be separated.
In a preferred embodiment, the third valve 11 is a liquid back pressure valve, and the third valve 11 can automatically open for liquid discharge when the pressure provided by the liquid in the gravity separation chamber 1 is sufficiently high.
In a preferred embodiment, the fourth valve 15 is a gas back pressure valve, and the fourth valve 15 can automatically open to 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, 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 tube wall of the second hollow material 13, the pressure difference cannot be larger than the working pressure difference of the second hollow material, and the second hollow material can be damaged if the pressure difference is not larger than the working pressure difference of the second hollow material. If the pressure in the gravity separation chamber 1 fails to open the fourth valve 15 and opens the third valve 11 due to improper opening pressure settings of the two valves, the liquid in the gravity separation chamber 1 will flow out of the third valve 11 together with the gas.
Because the first hollow material and the second hollow material realize the blocking or permeation characteristic to liquid or gas by the surface tension of the liquid, the inner side and the outer side of the pipe wall of the first hollow material and the second hollow material cannot bear overlarge pressure difference, and when the pressure difference is overlarge, the gas-liquid separation characteristic of the fiber is invalid. In order to solve the problem, when the fluid pressure distribution of the system exceeds the working range of the fibers, a liquid backpressure valve and a gas backpressure valve are respectively arranged on the liquid discharge pipe and the exhaust pipe, the two backpressure valves can respectively keep the working pressure difference of two sides of the pipe wall of the two hollow pipes within a reasonable range, and then the gas-liquid separation device can adapt to the working pressure of any gas and liquid.
Although the first embodiment and the second embodiment have different components, the principle of implementation 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 gas dissolving tank, which is divided into a second gas collecting area 17 and a second liquid collecting area 18, wherein the gas in the second gas collecting area 17 is solute gas, and the liquid in the second liquid collecting area 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 gas dissolving tank and the liquid collecting cavity 19 and used for preventing gas or liquid in the gas dissolving 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 an inorganic ceramic ultrafiltration hollow tube and is of a tubular structure, liquid can be allowed to pass through the tube wall, and gas cannot be allowed to pass through two sides of the tube wall within a certain pressure difference range; the two ends 211 of the third hollow material 21 are respectively and fixedly arranged on the sealing part 20, the openings 212 at the two ends of the third hollow material 21 are communicated with the gas dissolving tank, gas and liquid in the gas dissolving tank are allowed to enter the tube 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 discharge pipe 22, and a fifth valve 23 is arranged on the third liquid discharge pipe.
The "constant pressure difference" in the "constant pressure difference range" is determined by the characteristics of the third hollow material, similarly to the first hollow material. The material can be selected according to actual requirements.
In the present embodiment, the dissolved air tank may be a pressure dissolved air tank, as shown in fig. 3, which generally can only discharge gas solution, but cannot discharge solute gas inside. Gas solution and solute gas are stored in the gas dissolving tank, and a certain pressure is kept in the gas dissolving tank generally in order to increase the amount of the solute gas.
Thus, as a preferred embodiment, the fifth valve 23 is a liquid back-pressure valve or a check valve; the opening pressure of the fifth valve 23 is mainly to reduce the pressure difference between the two sides of the tube wall of the third hollow material, the liquid in the gas dissolving tank is discharged out of the tank through the fifth valve 23, and if the pressure in the gas dissolving tank is lower than the pressure difference which can be borne by the two sides of the tube wall of the third hollow material, the fifth valve 23 can be used as a check valve.
At least one third hollow material 21 is arranged. The larger the amount of the third hollow material 21, the larger the contact area between the third hollow material and the liquid collecting cavity 19, and the more favorable the gas solution from the gas dissolving tank can be diffused into the liquid collecting cavity 19, so that the actual pressure difference between two sides of the wall of the third hollow material pipe can be reduced. In addition, the intermediate section 213 may be set long enough to increase the contact area, and the arrangement scale of the hollow material should be determined in consideration of the flow rate of the fluid passing through the hollow material in practical use.
The gas-liquid separation process of the present embodiment is substantially: the gaseous solution under pressure in the second collection space 18 will pass through the walls of the third hollow material 21, allowing the liquid to escape into the collection chamber 19 and be discharged to the intended apparatus through a third discharge pipe 22 and a liquid back pressure valve 23. When the consumption of the gas solution in the second liquid collecting area 18 is finished 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, and the safety and the working performance of the device are ensured.
From the first embodiment to the third embodiment, it can be seen that an external pressure method and an internal pressure method may be used for the use of the fibers, that is, the fluid may flow from the outer side wall of the hollow material to the inner side (as in the first embodiment and the second embodiment), and the fluid may also flow from the inner side wall of the hollow material to the outer side (as in the third embodiment).
The present application is further described below with reference to examples, but these examples are only for the purpose of illustration and should not be construed as limiting the present application.
Example 1:
as shown in fig. 1, a gas-liquid separation apparatus includes a gravity separation chamber 1, a feed port 2 provided at a substantially middle-upper portion of the gravity separation chamber 1; a first exhaust pipe 3 is arranged above the gravity separation cavity 1, a first valve 4 is arranged on the first exhaust pipe, and the first valve is a gas backpressure 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 also comprises a first hollow material 6, wherein the first hollow material 6 is hydrophilic ultrafiltration hollow fibers or inorganic ceramic ultrafiltration hollow tubes; the first end 601 of the first hollow material 6 is a closed end and is positioned below the liquid level 501 of the first liquid collecting area, and the second end 602 of the first hollow material 6 is arranged upwards and is higher than the first end 601; the second end 602 is connected to a first drain pipe 7, as can be seen from fig. 1, the second end 602 and the first drain pipe 7 are located in the middle upper part of the gravity separation chamber 1, the first drain pipe 7 extends out of the gravity separation chamber 1, and a second valve 8, which is a liquid back pressure valve, is arranged thereon.
Gas-liquid mixture with pressure enters the gravity separation cavity 1 from the feed inlet 2, the flow speed is slowed down, and the mixture is primarily separated under the action of gravity; the separated gas gathers upwards at the upper part of the gravity separation chamber 1, the separated liquid (containing gas) moves downwards 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), goes upwards from the first end 601 to the second end 602 and reaches 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 automatically opens to perform the exhaust.
Example 2
As shown in fig. 2, a gas-liquid separation apparatus includes a gravity separation chamber 1, a feed inlet 2 is provided on the gravity separation chamber 1; a second liquid discharge pipe 10 is arranged below the gravity separation cavity 1, and a third valve 11 which is a liquid back pressure valve is arranged on the gravity separation cavity; the upper part of the gravity separation cavity 1 is provided with a first gas collection area 12; the device also comprises a second hollow material 13, wherein the second hollow material 13 is a hydrophobic ultrafiltration hollow fiber; the first end 1301 of the second hollow material 13 is a closed end and is positioned in the first gas collecting area 12, and the second end 1302 of the second hollow material 13 is arranged downwards and is lower than the first end 1301; the second end 1302 is connected to the second exhaust pipe 14, as shown in fig. 2, the second end 1302 and the second exhaust pipe 14 are located at 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, which is a gas backpressure valve, is arranged on the second exhaust pipe.
Gas-liquid mixture with pressure enters the gravity separation cavity 1 from the feed inlet 2, the flow speed is slowed down, and the mixture is primarily separated under the action of gravity; the separated gas (containing liquid) moves upwards and gathers in the first gas collection area 12, then the gas enters the second hollow material 13 (the gas in the second hollow material 13 contains almost no liquid), descends from the first end 1301 to the second end 1302 and reaches the second gas discharge pipe 14, and when the gas pressure is high 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 pressure in front of the fourth valve 15), the third valve 11 is automatically opened to discharge the liquid.
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 area 17, the lower part of the dissolved gas tank is provided with a second liquid collecting area 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 an inorganic ceramic ultrafiltration hollow tube; both ends of the third hollow material 21 are arranged on the sealing part 20, the opening 212 of the third hollow material is communicated with the dissolved air tank, liquid in the dissolved air tank is allowed to enter the third hollow material 21, and the middle section 213 of the third hollow material 21 extends into the liquid collecting cavity 19; the liquid collecting chamber 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 a plurality of pieces, only two pieces are shown in fig. 3, and each hollow material is independently installed on the sealing part 20 and extends into the liquid collecting cavity 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 is water; the dissolved air tank itself has pressure inside, and due to the presence of the seal 20, the gas liquid in the dissolved air tank cannot directly enter the liquid collection chamber 19, but the gas liquid in the dissolved air tank can enter the third hollow material 21 through the opening of the third hollow material 21 and then seep into the liquid collection chamber 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 overturns, the internal air cannot leak. In this embodiment, the gas in the gas dissolving tank does not need to be discharged, the opening pressure of the fifth valve 23 is mainly to reduce the pressure difference between the two sides of the third hollow material pipe wall, and if the working pressure difference which can be endured by the hollow material pipe wall is larger than the fluid pressure in the gas dissolving tank, the fifth valve 23 can be used as a check valve.
Claims (10)
1. A gas-liquid separation apparatus, comprising:
the gravity separation device comprises a gravity separation cavity (1), wherein a feed inlet (2) is formed in the gravity separation cavity (1) and is used for feeding a gas-liquid mixture;
a first exhaust pipe (3) is arranged above the gravity separation cavity (1) and 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 a first liquid collecting area (5);
the gas-liquid separation device also comprises a first hollow material (6) which is hydrophilic ultrafiltration hollow fiber or an 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 a first liquid discharging pipe (7) and is used for discharging liquid out of the gravity separation cavity (1);
a second valve (8) is arranged on the first liquid discharge pipe (7);
or,
the gas-liquid separation device includes:
the gravity separation device comprises a gravity separation cavity (1), wherein a feed inlet (2) is formed in the gravity separation cavity (1) and is used for feeding a gas-liquid mixture;
a second liquid discharge pipe (10) is arranged below the gravity separation cavity (1) and 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 provided with a first gas collection area (12);
the gas-liquid separation device also comprises a second hollow material (13) which is a hydrophobic ultrafiltration hollow fiber; the first end (1301) of the second hollow material (13) is a blind end and is positioned in the first gas collection zone (12), and the second end (1302) of the second hollow material (13) is connected with a second exhaust pipe (14) and is used for exhausting gas to the outside of the gravity separation cavity (1);
and a fourth valve (15) is arranged on the second exhaust pipe (14).
2. Gas-liquid separation device according to claim 1, characterized in that the first valve (4) is a gaseous back-pressure valve and the second valve (8) is a liquid back-pressure valve; the third valve (11) is a liquid backpressure valve, and the fourth valve (15) is a gas backpressure valve;
the opening pressure of the second valve (8) connected with the first hollow material (6) is lower than the opening pressure of the 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 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 of the working pressure born by the two sides of the first hollow material and/or the second hollow material is larger than the pressure in the gravity separation cavity (1), the second valve (8) and/or the fourth valve (15) is used as a check valve or is eliminated.
3. The gas-liquid separation device according to any one of claims 1 or 2, wherein the blind end of the first hollow material (6) is a sealed end, or is sealed by a first sealing member (9); the blind end of the second hollow material (13) is a sealing end, or a second sealing part (16) is adopted for sealing.
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 in an upward direction; the first end (1301) to the second end (1302) of the second hollow material are arranged downstream.
5. The gas-liquid separation device of claim 4, wherein the second end (602) of the first hollow material is located above the liquid level of the first sump region (5); the second end (1302) of the second hollow material is located below the first gas collection zone (12).
6. Gas-liquid separation device according to any one of claims 1, 2 and 4, characterized in that at least one of the first hollow materials (6); at least one second hollow material (13) is arranged.
7. The gas-liquid separation device according to claim 6, wherein the second end (602) of each of the first hollow materials is connected to the first drain pipe (7); the second end (1302) of each second hollow material is connected to a second exhaust pipe (14).
8. A gas-liquid separation device comprising:
the gas dissolving tank is divided into a second gas collecting area (17) and a second liquid collecting area (18), wherein the gas in the second gas collecting area (17) is solute gas, and the liquid in the second liquid collecting area (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 gas dissolving tank and the liquid collecting cavity (19) and used for preventing gas or liquid in the gas dissolving tank from directly entering the liquid collecting cavity (19);
the gas-liquid separation device also comprises a third hollow material (21) which is hydrophilic ultrafiltration hollow fiber or inorganic ceramic ultrafiltration hollow tube; the two ends of the third hollow material (21) are respectively arranged on the sealing part (20), the opening (212) of the third hollow material is communicated with the dissolved air tank, and the middle section (213) of the third hollow material 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 third liquid discharging pipe (22).
9. Gas-liquid separation device according to claim 8, characterized in that the fifth valve (23) is a liquid back pressure valve or a check valve.
10. The gas-liquid separation device according to claim 8 or 9, wherein at least one of the third hollow materials (21) is provided.
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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 |
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| CN117398770A (en) | 2024-01-16 |
| CN108371846B (en) | 2023-09-26 |
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