CN113274806A - Gas-liquid-solid two-stage three-phase separation device and method for waste gas of solidification tank - Google Patents
Gas-liquid-solid two-stage three-phase separation device and method for waste gas of solidification tank Download PDFInfo
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- CN113274806A CN113274806A CN202110400260.8A CN202110400260A CN113274806A CN 113274806 A CN113274806 A CN 113274806A CN 202110400260 A CN202110400260 A CN 202110400260A CN 113274806 A CN113274806 A CN 113274806A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D36/003—Filters in combination with devices for the removal of liquids
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Abstract
A solidification tank waste gas-liquid-solid three-phase two-stage separation device is connected between a waste gas outlet at the bottom of a solidification tank and an exhaust valve, a gas-liquid separation plate in a main pipeline of the separation device performs primary liquid-phase separation on waste gas, and the separated liquid phase falls into a liquid collection bin at the lower part of the main separation pipeline under the combined action of inertial separation and gravity settling; the microporous carbon filtering section carries out secondary gas-solid separation on the waste gas, and the separated solid falls into a solid-phase bin at the lower part of the main separating pipeline under the combined action of filtering separation and gravity settling. The gas-liquid-solid three-phase two-stage separation device series with different separation capacities can be formed by reasonably matching the size of the elevation angle of the gas-liquid separation plate, the area of the gas port at the upper part of the gas-liquid separation plate and the pipeline, the columnar length of the microporous carbon filtering section, the porosity and the pore diameter, and the gas-liquid-solid three-phase two-stage separation device series can be used for realizing the gas-liquid-solid three-phase two-stage separation of the waste gas of the solidification tanks with different capacities. Waste gas generated by solidifying materials in the solidifying tank under high temperature pressurization is subjected to valve separation by a gas-liquid-solid three-phase two-stage separation device, so that the exhaust valve and the pipeline are prevented from being subjected to particle abrasion and liquid corrosion by gas.
Description
Technical Field
The invention relates to a gas-liquid-solid two-stage three-phase separation device and method for waste gas of a solidification tank.
Background
The carbon graphite material for machinery is widely applied to modern equipment manufacturing, and inorganic materials and organic resin, solid organic materials and liquid organic resin, porous carbon materials and the like are used for producing composite materials through processes of dipping, curing, roasting and the like so as to improve the quality and performance of the materials and widen the application field of the materials. The processes of impregnation, solidification and roasting for preparing the composite material need to be carried out in a solidification tank, a sintering furnace or other high-temperature high-pressure gas containers, waste gas generated in the preparation process is usually harmful substances mixed by gas, liquid and solid phases, and the waste gas needs to be separated and purified, so that the waste gas cannot be directly discharged to pollute the environment. The proportion of gas-liquid-solid three-phase mixed gas components in the exhaust gas under different process conditions and different physical properties of each phase are greatly different from the materials for impregnation, solidification and roasting, and the separation difficulty, the separation method and the separation device are greatly different from each other.
Chinese patent CN 111495040A discloses a horizontal pipeline type gas-liquid separation device and method, the invention utilizes a main pipeline cyclone device to generate a liquid film and a gas core, a complex liquid collecting cavity collects the liquid film, an intermediate baffle plate in the liquid collecting cavity guides the liquid film to continue to separate gas in the liquid film in a detour process, and the liquid is collected at the lower part of the liquid collecting cavity and flows out under the action of gravity; the separator is suitable for gas-liquid separation with high flow rate, can drive the main pipeline rotational flow device to rotate and generate two flow patterns of a liquid film and a gas core, the liquid collection cavity collects liquid, the main function of the separator is the invention, the separator has large volume and complex structure, and is only suitable for separating liquid-gas two-phase fluid with high liquid-phase component ratio, and the gas after liquid-phase separation still has few liquid drops to be discharged from a gas-phase outlet pipe. The invention also belongs to the first-stage separation of gas-liquid two-phase flow without solid phase, and the liquid phase in the gas is not completely separated.
US patent US7381235 proposes a gas-liquid separation device of two example structures. The first example structure is that the liquid taking port is spirally opened around the pipe wall at the downstream straight pipe section of the swirler, and the spiral direction of the liquid taking port is opposite to the direction of the swirler vanes; the second example structure is that the downstream straight pipe section is provided with a plurality of strip-shaped liquid taking ports along the axial direction of the pipeline and distributed on the circumference of the pipeline. This patent has proposed the liquid mouth structure of getting of non-circular hole formula, has reduced the liquid membrane flow resistance, has improved separation efficiency. The U.S. Pat. No. 4, 7835483, 2 further improves the structure of the liquid taking port, the number of spiral inclined liquid taking ports is increased on the wall surface of the straight pipe (a plurality of spiral liquid taking ports are uniformly distributed around the pipe), and the downstream of the liquid taking ports is combined with a pipe shrinking structure, so that gas-liquid two-phase multi-stage separation is formed, the efficiency of the separator is further improved, and the applicable gas velocity range is further improved. The invention has a complex structure, belongs to the multi-stage separation of gas-liquid two-phase flow without solid phase, but the liquid phase in the gas can not be completely separated.
Disclosure of Invention
The technical problem is as follows: the invention aims to solve the problem of environmental protection caused by the exhaust emission of a curing tank, the exhaust gas generated in the organic material curing process is usually a gas-liquid-solid three-phase mixture, and the liquid phase in the exhaust gas can corrode pipelines, gate valves and equipment of an exhaust emission system, so that the liquid phase in the gas is required to be completely separated. Solid phase in the waste gas can abrade pipelines, gate valves and equipment of a waste gas discharge system, pollute the surrounding environment, and even block an exhaust valve, so that the waste gas discharge system cannot work normally, therefore, three-phase waste contained in the waste gas of the curing tank must be completely separated so as to be respectively subjected to subsequent treatment meeting the national environmental protection requirement; the gas-liquid-solid three-phase two-stage separation device for the waste gas of the solidification tank can realize gas-liquid shunting and solid-phase filtration, ensure the normal work of a waste gas discharge system and prolong the service lives of pipelines, gate valves and equipment of the waste gas discharge system.
The technical scheme is as follows: the invention relates to a gas-liquid-solid three-phase two-stage separation device for waste gas of a solidification tank, which comprises gas-liquid separation realized by a gas-liquid separation plate and gas-solid separation realized by the gas-liquid separation plate and a microporous carbon filter section.
Has the advantages that: the gas-liquid-solid three-phase two-stage separation device for the waste gas of the curing tank disclosed by the invention is used for completing gas-liquid shunting and gas-solid separation of the waste gas of the curing tank in two stages. Ensures that the solidification tank waste gas passing through the separation device does not generate particle abrasion and liquid corrosion to discharge system pipelines, gate valves and equipment.
Drawings
FIG. 1 is a schematic structural diagram of a two-stage gas-liquid-solid three-phase separation device for waste gas of a solidification tank.
In the figure: 1-a main separator conduit; 2-gas-liquid separation plate; 3-a microporous carbon filtration section; 4-liquid collecting bin; 5-connecting bolts; 6-a curing tank; 7-an exhaust valve; 8-gas-liquid separation plate elevation angle; 9-gas port; 10-gas-liquid-solid mixed waste gas; 11-a liquid; 12-gas; 13-solid phase storehouse.
Claims (7)
1. The utility model provides a solid three-phase two-stage separator of solidification jar waste gas-liquid which characterized in that: including separator trunk line (1) that is connected with the exhaust emission pipe of solidification jar (6) bottom, gas-liquid separation board (2) in separator trunk line (1), liquid storehouse (4) are connected to separator trunk line (1) middle section bottom, gas-liquid separation board (2) of putting to one side along trunk line internal diameter welding, form gas port (9) with trunk line upper portion, microporous carbon filter section (3) of separator trunk line air outlet, be located the trunk line lower part, solid phase storehouse (13) between gas-liquid separation board (2) and microporous carbon filter section (3), separator trunk line and solidification jar exhaust emission pipeline's connecting bolt (5).
2. The solidification tank waste gas-liquid-solid three-phase two-stage separation device according to claim 1, characterized in that: the main pipeline (1) of the separation device is provided with three outlets of gas, liquid and solid, after being intercepted by the gas-liquid separation plate (2), the liquid is collected to the liquid collection bin (4) at the lower part under the action of gravity, and the liquid is released periodically; after being intercepted by the microporous carbon filtering section (3), the solid falls into a solid phase bin (13), and the solid is released periodically; gas enters the microporous carbon filtering section (3) from a gas port (9) at the upper part of the gas-liquid separation plate (2), and the gas flows into an exhaust pipeline of a subsequent purification device through an exhaust valve (7) after solid phase in the waste gas is filtered.
3. The solidification tank waste gas-liquid-solid three-phase two-stage separation device according to claim 1, characterized in that: the gas-liquid separation plate (2) is made of stainless steel and has the same diameter as the main pipeline, the gas-liquid separation plate is welded to the inner ring of the main pipeline (1) of the separation device after a liquid outlet, the forward inclined elevation angle (8) is 45-60 degrees corresponding to the capacity of the tank body, and the larger the liquid content is, the larger the elevation angle (8) of the gas-liquid separation plate is; the area of the air port (9) formed by the elevation angle (8) of the gas-liquid separation plate and the main pipeline (1) of the separation device is determined by the elevation angle (8) of the gas-liquid separation plate, and the area of the air port (9) is larger when the capacity of the tank body is larger.
4. The solidification tank waste gas-liquid-solid three-phase two-stage separation device according to claim 1, characterized in that: the microporous carbon filtering section (3) is a chamfered cylinder with the same diameter as the main pipeline (1) of the separating device, the tangent plane is in flow and parallel to the gas-liquid separating plate (2), the porosity of the microporous carbon is more than 40%, the average pore diameter is less than 10 mu m, the length of the microporous carbon column section is in direct proportion to the filtering precision, and the microporous carbon filtering section can be reused by backwashing.
5. The solidification tank waste gas-liquid-solid three-phase two-stage separation device according to claim 1, characterized in that: the liquid collecting bin (4) is of a bent pipe structure with a closed end cover at the outlet end, the end cover and the liquid collecting bin pipe are connected through bolts, a static sealing gasket is arranged at the joint, the cover can be periodically detached to discharge accumulated liquid, and the inlet end is welded at the bottom of the main pipeline (1) of the separating device.
6. The solidification tank waste gas-liquid-solid three-phase two-stage separation device according to claim 1, characterized in that: the solid-phase bin (13) is of a bent pipe structure with an end cover sealed at the outlet end, the capacity of the bent pipe structure can be smaller than that of the liquid collecting bin (4), the end cover and the solid-phase bin pipe are connected through bolts, the cover can be periodically detached to discharge solid-phase particles, and the inlet end is welded at the bottom of the main pipeline (1) of the separation device.
7. The gas-liquid-solid three-phase two-stage separation method of the solidification tank waste gas-liquid-solid three-phase two-stage separation device according to any one of claims 1 to 6, characterized in that: the gas-liquid-solid three-phase fluid (10) flows into a main pipeline (1) of the separation device through a waste gas outlet at the bottom of the curing tank, and after being intercepted by a gas-liquid separation plate (2), the liquid (11) is collected to a liquid collection bin (4) at the lower part under the action of gravity, and an end cover of the liquid collection bin is periodically opened for release; the gas-solid two-phase fluid after the liquid (11) is separated does not generate water seal on the micropores of the downstream microporous carbon filtering section (3) so that the microporous carbon filtering section (3) does not lose filtering capacity; gas-solid two-phase fluid enters the microporous carbon filtering section (3) from a gas port (9) at the upper part of the gas-liquid separation plate (2), a solid phase is intercepted and falls into a solid phase bin (13), and the solid phase in the waste gas is filtered and then flows into an exhaust pipeline of a subsequent purification device through an exhaust valve (7); the gas (12) which is separated into liquid phase and solid phase by the solidification tank waste gas-liquid-solid three-phase two-stage separation device can not corrode and wear the exhaust valve (7), downstream pipelines and equipment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110400260.8A CN113274806A (en) | 2021-04-14 | 2021-04-14 | Gas-liquid-solid two-stage three-phase separation device and method for waste gas of solidification tank |
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| CN202110400260.8A CN113274806A (en) | 2021-04-14 | 2021-04-14 | Gas-liquid-solid two-stage three-phase separation device and method for waste gas of solidification tank |
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| CN102032997A (en) * | 2010-11-18 | 2011-04-27 | 安徽淮化股份有限公司 | Gas-liquid-solid three-phase simultaneous sampling device of fluid bed reactor |
| CN102167414A (en) * | 2010-02-25 | 2011-08-31 | 天源环保有限公司 | High-position exhaust device |
| CN204107101U (en) * | 2014-07-28 | 2015-01-21 | 武汉芳笛环保股份有限公司 | A kind of gas-liquid-solid three-phase separation precipitator |
| CN106368671A (en) * | 2016-08-31 | 2017-02-01 | 中石化石油工程技术服务有限公司 | High sulfur natural gas gas-liquid-solid three-phase separating device and method |
| CN206853205U (en) * | 2017-04-19 | 2018-01-09 | 西安长庆油气建设实业有限责任公司 | A kind of gas-liquid-solid three-phase separator |
| CN108211526A (en) * | 2017-05-02 | 2018-06-29 | 中国石油化工股份有限公司 | Harmful influence leaks emergency disposal system |
| CN110185431A (en) * | 2019-07-12 | 2019-08-30 | 中国石油大学(华东) | A kind of coal bed gas well well head gas-liquid-solid three-phase separating device |
-
2021
- 2021-04-14 CN CN202110400260.8A patent/CN113274806A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1427801A (en) * | 2000-05-05 | 2003-07-02 | 陶氏环球技术公司 | Particulate removal in reformation of halogenated organic materials |
| US20050103700A1 (en) * | 2003-11-17 | 2005-05-19 | Hiroyasu Shirakawa | Filter device |
| CN102167414A (en) * | 2010-02-25 | 2011-08-31 | 天源环保有限公司 | High-position exhaust device |
| CN102032997A (en) * | 2010-11-18 | 2011-04-27 | 安徽淮化股份有限公司 | Gas-liquid-solid three-phase simultaneous sampling device of fluid bed reactor |
| CN204107101U (en) * | 2014-07-28 | 2015-01-21 | 武汉芳笛环保股份有限公司 | A kind of gas-liquid-solid three-phase separation precipitator |
| CN106368671A (en) * | 2016-08-31 | 2017-02-01 | 中石化石油工程技术服务有限公司 | High sulfur natural gas gas-liquid-solid three-phase separating device and method |
| CN206853205U (en) * | 2017-04-19 | 2018-01-09 | 西安长庆油气建设实业有限责任公司 | A kind of gas-liquid-solid three-phase separator |
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| CN110185431A (en) * | 2019-07-12 | 2019-08-30 | 中国石油大学(华东) | A kind of coal bed gas well well head gas-liquid-solid three-phase separating device |
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Application publication date: 20210820 |
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