CN212178910U - Organic waste gas treatment control system - Google Patents
Organic waste gas treatment control system Download PDFInfo
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- CN212178910U CN212178910U CN202020938478.XU CN202020938478U CN212178910U CN 212178910 U CN212178910 U CN 212178910U CN 202020938478 U CN202020938478 U CN 202020938478U CN 212178910 U CN212178910 U CN 212178910U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model discloses an organic waste gas treatment control system, which comprises a waste gas pipeline, a heat storage combustion furnace, a cooling tower, a washing tower group, an alkali washing tower group and a chimney, wherein the waste gas pipeline is used for conveying organic waste gas; the heat storage combustion furnace is communicated with the waste gas pipeline and is used for oxidizing organic matters in the organic waste gas into carbon dioxide and water to obtain secondary clean gas; the cooling tower is communicated with an air outlet header pipe of the heat storage combustion furnace and is used for cooling the secondary clean gas; the water washing tower group is communicated with the cooling tower and is used for removing dust in the secondary cleaning gas, and the water washing tower group comprises one water washing tower or at least two water washing towers which are sequentially connected in series; the alkaline washing tower group is communicated with the water washing tower group and used for removing acid gas in the secondary cleaning gas to obtain cleaning gas; the chimney is communicated with the caustic tower group to discharge clean gas. The utility model discloses organic matter and other impurity in the organic waste gas can effectively be detached for organic waste gas reaches emission standard.
Description
Technical Field
The utility model relates to an organic waste gas treatment control system.
Background
At present, the organic waste gas generated in industry is treated before being discharged, but the organic matters in the organic waste gas are difficult to be completely removed by the existing treatment equipment, and the treatment effect is not ideal.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide an organic waste gas treatment control system, it can effectively detach organic matter and other impurity in the organic waste gas for organic waste gas reaches emission standard.
In order to solve the technical problem, the technical scheme of the utility model is that: an organic exhaust treatment control system comprising:
the waste gas pipeline is used for conveying organic waste gas;
the heat storage combustion furnace is communicated with the waste gas pipeline and is used for oxidizing organic matters in the organic waste gas into carbon dioxide and water to obtain secondary clean gas;
the cooling tower is communicated with the gas outlet main pipe of the heat storage combustion furnace and is used for cooling the secondary clean gas;
the water washing tower group is communicated with the cooling tower and is used for removing dust in the secondary cleaning gas, and the water washing tower group comprises one water washing tower or at least two water washing towers which are sequentially connected in series;
the alkaline washing tower group is communicated with the water washing tower group and is used for removing acid gas in secondary cleaning gas to obtain cleaning gas, and the alkaline washing tower group comprises one alkaline washing tower or at least two alkaline washing towers which are sequentially connected in series;
a chimney in communication with the caustic tower bank to exhaust clean gas.
Furthermore, a washing tower fan used for accelerating the cleaning gas to enter the chimney is arranged on a pipeline for communicating the alkaline washing tower group and the chimney.
In order to temporarily treat the organic waste gas by adopting an activated carbon adsorption tank when the heat-storage combustion furnace fails, the organic waste gas treatment control system further comprises the activated carbon adsorption tank, an inlet of the activated carbon adsorption tank is communicated with the waste gas pipeline through a bypass pipeline, an outlet of the activated carbon adsorption tank is communicated with the chimney, a first pneumatic butterfly valve for controlling the on-off of the bypass pipeline is installed on the bypass pipeline, and a valve for controlling the on-off of the waste gas inlet of the heat-storage combustion furnace is installed on the waste gas inlet of the heat-storage combustion furnace.
Further in order to automatically put the activated carbon adsorption tank into service when the regenerative combustion furnace fails, the organic waste gas treatment control system further includes:
the concentration meter is arranged on the gas outlet header pipe and is suitable for collecting concentration signals of the secondary clean gas;
and the PLC is in signal connection with the concentration meter, the first pneumatic butterfly valve and the valve respectively and is suitable for controlling the valve to be closed and the first pneumatic butterfly valve to be opened when the concentration value corresponding to the concentration signal acquired by the concentration meter exceeds the concentration set value.
Further in order to automatically introduce fresh air into the regenerative combustion furnace when the temperature of the secondary cleaning gas in the air outlet main pipe exceeds a high limit, the organic waste gas treatment control system further comprises:
the first temperature sensor is arranged on the air outlet main pipe and is suitable for collecting temperature signals of the secondary cleaning gas;
the fresh air pipeline is communicated with the waste gas pipeline so as to convey fresh air into the heat storage combustion furnace through the waste gas pipeline, and a second pneumatic butterfly valve for controlling the opening and the closing of the fresh air pipeline is installed at the inlet end of the fresh air pipeline; wherein the content of the first and second substances,
the PLC controller is respectively connected with the first temperature sensor and the second pneumatic butterfly valve and is also suitable for controlling the second pneumatic butterfly valve to be opened when the temperature value corresponding to the temperature signal acquired by the first temperature sensor is higher than the first temperature set value.
Further, in order to automatically open a third pneumatic butterfly valve to accelerate the discharge of high-temperature gas in the regenerative combustion furnace when the temperature of secondary clean gas in the gas outlet main pipe exceeds the limit, the organic waste gas treatment control system also comprises a high-temperature discharge pipe, wherein the inlet of the high-temperature discharge pipe is communicated with a combustion chamber of the regenerative combustion furnace, the outlet of the high-temperature discharge pipe is communicated with the gas outlet main pipe, and the inlet of the high-temperature discharge pipe is provided with the third pneumatic butterfly valve for controlling the on-off of the high-temperature discharge pipe; wherein the content of the first and second substances,
the PLC is connected with the third pneumatic butterfly valve and is also suitable for controlling the third pneumatic butterfly valve to be opened when the temperature value corresponding to the temperature signal acquired by the first temperature sensor is higher than a second temperature set value, and the second temperature set value is higher than the first temperature set value.
Furthermore, a mixing box is connected in series on the air outlet main pipe, the high-temperature discharge pipe is communicated with the mixing box, and the first temperature sensor is arranged on the position, located in front of the mixing box, of the air outlet main pipe.
Further in order to automatically control the alarm device to alarm when the temperature of the gas mixed by the mixing box is too high, the organic waste gas treatment control system further comprises:
and the second temperature sensor is arranged on a pipeline between the communicated mixing box and the cooling tower and is suitable for collecting temperature signals of mixed gas mixed by the mixing box, and the PLC is connected with the second temperature sensor and is also suitable for controlling the action of the alarm device connected with the second temperature sensor according to the temperature signals collected by the second temperature sensor.
And further, in order to automatically control the heat-storage combustion furnace to stop when the temperature of the secondary clean gas cooled by the cooling tower is too high, the third temperature sensor is arranged on a pipeline communicated between the cooling tower and the water washing tower and is suitable for collecting the temperature signal of the secondary clean gas cooled by the cooling tower, and the PLC is respectively connected with the third temperature sensor and the switch control element of the heat-storage combustion furnace and is also suitable for controlling the switch control element to act according to the temperature signal collected by the third temperature sensor.
Further, in order to accelerate the organic waste gas to enter the regenerative combustion furnace, the organic waste gas treatment control system further comprises a main fan, wherein an inlet of the main fan is communicated with an outlet of the waste gas pipeline, and an outlet of the main fan is communicated with an air inlet main pipe of the regenerative combustion furnace.
Further, a flame arrester is installed on the waste gas pipeline.
After having adopted above-mentioned technical scheme, the organic waste gas of industry production is carried to the regenerative combustion stove in through waste gas pipeline, the organic matter oxidation that the regenerative combustion stove in with organic waste gas is carbon dioxide and water, and then detach the organic matter in the organic waste gas, and inferior clean gas is generated, inferior clean gas flows through the cooling tower in proper order, wash column group and alkali wash tower group, arrange the atmosphere from the chimney at last, the cooling tower cools off inferior clean gas, wash column group removes the dust in inferior clean gas, the acid gas in inferior clean gas is detached to alkali wash tower group, make inferior clean gas become the clean gas who satisfies emission standard, the utility model discloses a can detach the organic matter in the organic waste gas well, and clear away impurity and acid gas, make the gas that discharges satisfy emission standard, avoid industrial waste gas polluted environment.
Drawings
Fig. 1 is a schematic structural diagram of the organic waste gas treatment control system of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1, an organic exhaust gas treatment control system includes:
an exhaust gas pipe 1 for conveying an organic exhaust gas;
the heat storage combustion furnace 2 is communicated with the waste gas pipeline 1 and is used for oxidizing organic matters in the organic waste gas into carbon dioxide and water to obtain secondary clean gas;
the cooling tower 3 is communicated with the gas outlet header pipe of the heat accumulation combustion furnace 2 and is used for cooling the secondary clean gas;
the water washing tower group is communicated with the cooling tower 3 and is used for removing dust in the secondary cleaning gas, and the water washing tower group comprises one water washing tower 4 or at least two water washing towers 4 which are sequentially connected in series;
the alkaline washing tower group is communicated with the water washing tower group and is used for removing acid gas in secondary cleaning gas to obtain cleaning gas, and the alkaline washing tower group comprises one alkaline washing tower 5 or at least two alkaline washing towers 5 which are sequentially connected in series;
a chimney 6, said chimney 6 communicating with said caustic tower stack to exhaust clean gases.
Specifically, the organic waste gas that industry produced is carried to regenerative combustion furnace 2 in through exhaust gas pipeline 1, regenerative combustion furnace 2 is with organic matter oxidation carbon dioxide and water in the organic waste gas, and then detach the organic matter in the organic waste gas, and inferior clean gas is generated, inferior clean gas flows through cooling tower 3 in proper order, wash tower group and alkali wash tower group, discharge to the atmosphere from chimney 6 at last, cooling tower 3 cools off inferior clean gas, the dust in inferior clean gas is detached to the wash tower group, acid gas in inferior clean gas is detached to the alkali wash tower group, make inferior clean gas become the clean gas who satisfies emission standard, the utility model discloses a can detach the organic matter in the organic waste gas well to clear away impurity and acid gas, make the gas that discharges satisfy emission standard, avoid industrial waste gas to pollute the environment.
As shown in fig. 1, a scrubber fan 7 for accelerating the cleaning gas into the stack 6 is installed on a pipe connecting the caustic scrubber group and the stack 6.
As shown in fig. 1, in order to temporarily treat the organic waste gas by using an activated carbon adsorption tank 8 when the regenerative combustion furnace 2 fails, the organic waste gas treatment control system further includes the activated carbon adsorption tank 8, an inlet of the activated carbon adsorption tank 8 is communicated with the waste gas pipeline 1 through a bypass pipeline, an outlet of the activated carbon adsorption tank 8 is communicated with the chimney 6, a first pneumatic butterfly valve 91 for controlling the on-off of the bypass pipeline is installed on the bypass pipeline, and a valve 92 for controlling the on-off of the waste gas inlet of the regenerative combustion furnace 2 is installed on the bypass pipeline.
Specifically, the activated carbon adsorption tank 8 is used for removing organic matters and other impurities in the organic waste gas, the cost is high, and therefore, when the concentration of the waste gas in the gas outlet pipeline is too high, the regenerative combustion furnace 2 is indicated to be out of order, and the activated carbon adsorption tank 8 can be temporarily used for treating the organic waste gas.
As shown in fig. 1, in order to automatically put the activated carbon adsorption tank 8 into service when the regenerative combustion furnace 2 fails, the organic exhaust gas treatment control system further includes:
the concentration meter is arranged on the gas outlet header pipe and is suitable for collecting concentration signals of the secondary clean gas;
and the PLC is in signal connection with the concentration meter, the first pneumatic butterfly valve 91 and the valve 92 respectively and is suitable for controlling the valve 92 to be closed and the first pneumatic butterfly valve 91 to be opened when the concentration value corresponding to the concentration signal acquired by the concentration meter exceeds the concentration set value.
As shown in fig. 1, in order to automatically introduce fresh air into the regenerative combustion furnace 2 when the temperature of the sub-clean gas in the gas outlet main pipe exceeds a high limit, so as to achieve the purpose of reducing the temperature, the organic waste gas treatment control system further includes:
the first temperature sensor 101 is arranged on the air outlet main pipe, and is suitable for collecting temperature signals of the secondary cleaning gas;
a fresh air pipeline 110, wherein the fresh air pipeline 110 is communicated with the exhaust gas pipeline 1 so as to convey fresh air into the regenerative combustion furnace 2 through the exhaust gas pipeline 1, and a second pneumatic butterfly valve 93 for controlling the opening and the closing of the inlet end of the fresh air pipeline 110 is installed at the inlet end of the fresh air pipeline 110; wherein the content of the first and second substances,
the PLC controller is respectively connected with the first temperature sensor 101 and the second pneumatic butterfly valve 93, and is further suitable for controlling the second pneumatic butterfly valve 93 to be opened when the temperature value corresponding to the temperature signal acquired by the first temperature sensor 101 is higher than the first temperature set value.
As shown in fig. 1, in order to automatically open the third pneumatic butterfly valve 94 to accelerate the discharge of the high-temperature gas in the regenerative combustion furnace 2 when the temperature of the sub-clean gas in the gas outlet manifold exceeds the limit, the organic waste gas treatment control system further comprises a high-temperature discharge pipe 120, wherein the inlet of the high-temperature discharge pipe 120 is communicated with the combustion chamber of the regenerative combustion furnace 2, the outlet of the high-temperature discharge pipe 120 is communicated with the gas outlet manifold, and the inlet of the high-temperature discharge pipe 120 is provided with the third pneumatic butterfly valve 94 for controlling the on-off state of the high; wherein the content of the first and second substances,
the PLC controller is connected to the third pneumatic butterfly valve 94, and is further adapted to control the third pneumatic butterfly valve 94 to open when the temperature value corresponding to the temperature signal collected by the first temperature sensor 101 is higher than a second temperature set value, which is higher than the first temperature set value.
As shown in fig. 1, a mixing box 130 is connected in series to the outlet manifold, the high temperature discharge pipe 120 is communicated with the mixing box 130, and the first temperature sensor 101 is installed at a position of the outlet manifold before the mixing box 130.
As shown in fig. 1, in order to automatically control the alarm device to alarm when the temperature of the gas mixed by the mixing box 130 is too high, the organic waste gas treatment control system further includes:
the second temperature sensor 102 is arranged on a pipeline communicated between the mixing box 130 and the cooling tower 3, is suitable for collecting temperature signals of mixed gas mixed by the mixing box 130, is connected with the second temperature sensor 102, and is also suitable for controlling an alarm device connected with the second temperature sensor 102 to act according to the temperature signals collected by the second temperature sensor 102;
in order to automatically control the stop of the heat-accumulating combustion furnace 2 when the temperature of the secondary clean gas cooled by the cooling tower 3 is too high, the organic waste gas treatment control system further comprises a third temperature sensor 103, wherein the third temperature sensor 103 is arranged on a pipeline communicated between the cooling tower 3 and the water washing tower 4 and is suitable for collecting the temperature signal of the secondary clean gas cooled by the cooling tower 3, the PLC is respectively connected with the third temperature sensor 103 and the switch control element of the heat-accumulating combustion furnace 2, and is also suitable for controlling the switch control element to act according to the temperature signal collected by the third temperature sensor 103.
As shown in fig. 1, in order to accelerate the organic waste gas to enter the regenerative combustion furnace 2, the organic waste gas treatment control system further comprises a main fan 140, wherein an inlet of the main fan 140 is communicated with an outlet of the waste gas pipeline 1, and an outlet is communicated with an air inlet manifold of the regenerative combustion furnace 2.
As shown in fig. 1, a flame arrester 150 is mounted on the exhaust gas pipe 1.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Claims (10)
1. An organic waste gas treatment control system is characterized in that,
it includes:
an exhaust gas line (1) for conveying organic exhaust gas;
the heat storage combustion furnace (2) is communicated with the waste gas pipeline (1) and is used for oxidizing organic matters in the organic waste gas into carbon dioxide and water to obtain secondary clean gas;
the cooling tower (3) is communicated with an air outlet header pipe of the heat accumulation combustion furnace (2) and is used for cooling the secondary clean gas;
the water washing tower group is communicated with the cooling tower (3) and is used for removing dust in the secondary cleaning gas, and the water washing tower group comprises one water washing tower (4) or at least two water washing towers (4) which are sequentially connected in series;
the alkaline washing tower group is communicated with the water washing tower group and is used for removing acid gas in secondary cleaning gas to obtain cleaning gas, and the alkaline washing tower group comprises one alkaline washing tower (5) or at least two alkaline washing towers (5) which are sequentially connected in series;
a chimney (6), the chimney (6) being in communication with the caustic tower stack to exhaust clean gas.
2. The organic waste gas treatment control system according to claim 1,
and a washing tower fan (7) for accelerating the cleaning gas to enter the chimney (6) is arranged on a pipeline for communicating the alkaline washing tower group and the chimney (6).
3. The organic waste gas treatment control system according to claim 1,
still include activated carbon adsorption jar (8), the import of activated carbon adsorption jar (8) pass through the by-pass line with exhaust-gas line (1) is linked together, the export of activated carbon adsorption jar (8) with chimney (6) are linked together, install first pneumatic butterfly valve (91) of its break-make of control on the by-pass line, valve (92) of its switching of control are installed to the exhaust-gas inlet of regenerative combustion stove (2).
4. The organic waste gas treatment control system according to claim 3,
further comprising:
the concentration meter is arranged on the gas outlet header pipe and is suitable for collecting concentration signals of the secondary clean gas;
and the PLC is in signal connection with the concentration meter, the first pneumatic butterfly valve (91) and the valve (92) respectively and is suitable for controlling the valve (92) to be closed and the first pneumatic butterfly valve (91) to be opened when the concentration value corresponding to the concentration signal acquired by the concentration meter exceeds the concentration set value.
5. The organic waste gas treatment control system according to claim 4,
further comprising:
a first temperature sensor (101), said first temperature sensor (101) mounted on the outlet manifold adapted to collect a temperature signal of the sub-clean gas;
the fresh air pipeline (110), the fresh air pipeline (110) is communicated with the waste gas pipeline (1) so as to convey fresh air into the regenerative combustion furnace (2) through the waste gas pipeline (1), and a second pneumatic butterfly valve (93) for controlling the opening and the closing of the inlet end of the fresh air pipeline (110) is installed at the inlet end of the fresh air pipeline; wherein the content of the first and second substances,
the PLC controller is respectively connected with the first temperature sensor (101) and the second pneumatic butterfly valve (93), and is further suitable for controlling the second pneumatic butterfly valve (93) to be opened when the temperature value corresponding to the temperature signal acquired by the first temperature sensor (101) is higher than the first temperature set value.
6. The organic waste gas treatment control system according to claim 5,
the high-temperature heat accumulation combustion furnace is characterized by further comprising a high-temperature discharge pipe (120), wherein an inlet of the high-temperature discharge pipe (120) is communicated with a combustion chamber of the heat accumulation combustion furnace (2), an outlet of the high-temperature discharge pipe is communicated with the air outlet main pipe, a third pneumatic butterfly valve (94) for controlling the high-temperature discharge pipe to be switched on and off is installed at the inlet of the high-temperature discharge pipe (120), the PLC is connected with the third pneumatic butterfly valve (94), the high-temperature heat accumulation combustion furnace is further suitable for controlling the third pneumatic butterfly valve (94) to be switched on when a temperature value corresponding to a temperature signal acquired by the first temperature sensor (101) is higher than a second temperature set value, and.
7. The organic waste gas treatment control system according to claim 6,
the gas outlet main pipe is connected with a mixing box (130) in series, the high-temperature discharge pipe (120) is communicated with the mixing box (130), and the first temperature sensor (101) is arranged at the position, located in front of the mixing box (130), of the gas outlet main pipe.
8. The organic waste gas treatment control system according to claim 7,
further comprising:
the second temperature sensor (102) is arranged on a pipeline communicated between the mixing box (130) and the cooling tower (3), is suitable for collecting temperature signals of mixed gas mixed by the mixing box (130), is connected with the second temperature sensor (102), and is also suitable for controlling an alarm device connected with the second temperature sensor (102) to act according to the temperature signals collected by the second temperature sensor (102);
and/or a third temperature sensor (103), wherein the third temperature sensor (103) is arranged on a pipeline communicated between the cooling tower (3) and the water washing tower (4) and is suitable for collecting temperature signals of secondary cleaning gas cooled by the cooling tower (3), the PLC is respectively connected with the third temperature sensor (103) and a switch control element of the heat accumulation combustion furnace (2), and the PLC is also suitable for controlling the switch control element to act according to the temperature signals collected by the third temperature sensor (103).
9. The organic waste gas treatment control system according to claim 1,
the heat-accumulating combustion furnace is characterized by further comprising a main fan (140), wherein an inlet of the main fan (140) is communicated with an outlet of the waste gas pipeline (1), and an outlet of the main fan is communicated with an air inlet main pipe of the heat-accumulating combustion furnace (2).
10. The organic waste gas treatment control system according to claim 1,
and a flame arrester (150) is installed on the waste gas pipeline (1).
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| CN202020938478.XU CN212178910U (en) | 2020-05-28 | 2020-05-28 | Organic waste gas treatment control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870580A (en) * | 2021-06-17 | 2022-08-09 | 埃飘环境科技(上海)有限公司 | Equipment for safely treating waste gas and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114870580A (en) * | 2021-06-17 | 2022-08-09 | 埃飘环境科技(上海)有限公司 | Equipment for safely treating waste gas and application thereof |
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