CN218798028U - Workshop whole waste gas multi-point collecting system - Google Patents
Workshop whole waste gas multi-point collecting system Download PDFInfo
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- CN218798028U CN218798028U CN202223216319.7U CN202223216319U CN218798028U CN 218798028 U CN218798028 U CN 218798028U CN 202223216319 U CN202223216319 U CN 202223216319U CN 218798028 U CN218798028 U CN 218798028U
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
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Abstract
The utility model belongs to the field of gas collection processing apparatus, concretely relates to whole waste gas multiple spot collecting system in workshop, which comprises a workshop, the induced air house steward, collect the wind gap, the draught fan, the induced air house steward, induced air house steward and draught fan, the induced air pipe intercommunication, set up in the workshop top, the intercommunication has a plurality of normally open collection wind gaps and adjusts the collection wind gap on the induced air pipe, workshop gate upper portion is equipped with air curtain machine, air curtain machine air-out downwards forms the air curtain in workshop gate department, collect the wind gap through normally opening, it induced drafts to maintain normal negative pressure, collect the wind gap through the governing valve to the regulation, thereby satisfy the demand of induced drafting of different regions under the different circumstances, the regional increase amount of induced drafting that concentration is high, the regional volume of induced drafting that concentration is low, consequently, realize the regional collection of waste gas, it is efficient to collect waste gas, the volume of waste gas collected has been reduced, the operating pressure of back channel exhaust-gas treatment equipment has been alleviateed.
Description
Technical Field
The utility model belongs to gas collection processing apparatus field, concretely relates to whole waste gas multiple spot collecting system in workshop.
Background
The waste gas collection of industrial production is mainly divided into two types, namely, the waste gas collection is carried out on partial equipment in a workshop, which is mostly seen in smoke waste gas and closed reaction waste gas, and the waste gas exhaust is carried out on the whole workshop, which is mostly seen in dissipated foul smell and VOC waste gas collection; the most common mode of the whole waste gas of the workshop is the whole ventilation of the workshop, a large amount of ventilation is carried out by utilizing a large air inlet and outlet according to the volume of the workshop, and a large amount of external fresh air is introduced to replace the waste gas in the workshop; the waste gas collected by the method is partially diluted by fresh air, so that the quantity of the waste gas is large, and the subsequent waste gas treatment equipment is required to have the scale capable of treating large quantity of waste gas, so that the treatment cost is high; if continuous and efficient ventilation needs to be carried out on the whole workshop, the energy consumption cost is high, and therefore the whole workshop can be opened in stages, namely the workshop is closed for a period of time and then opened, or the workshop is opened in a wave-band mode, namely the workshop is opened for a period of time and then the workshop is opened for a period of time, the concentration of waste gas in the workshop fluctuates, and potential safety hazards are possibly caused; therefore, there is a need for a multipoint collecting system for whole exhaust gas in a workshop, which can collect the whole exhaust gas in the workshop, and can continuously and efficiently ventilate the workshop with a small amount of collected exhaust gas.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to above-mentioned prior art not enough, provide a whole waste gas multiple spot collecting system in workshop, solve the problem that exists among the prior art.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is: a multi-point collecting system for overall waste gas of a workshop comprises the workshop, an induced draft main pipe, collecting air ports and an induced draft fan, wherein a plurality of workshop gates are arranged on the front side of the workshop, the induced draft main pipe is arranged outside the back side of the workshop, the air outlet of the induced draft main pipe is communicated with the induced draft fan, a plurality of induced draft pipes are communicated with the induced draft main pipe at intervals, and the induced draft pipes penetrate through the back side of the workshop and are arranged at the top in the workshop; the collecting air ports are divided into normally open collecting air ports and adjusting collecting air ports, a plurality of normally open collecting air ports and adjusting collecting air ports are communicated with the induced duct, an adjusting valve is arranged between the adjusting collecting air ports and the induced duct, a plurality of concentration sensors are arranged on the induced duct at intervals, a detection probe of the concentration sensor on the induced duct is arranged outside the induced duct to directly detect gas in a workshop, and an air volume sensor is arranged at a communication section of each induced duct and the induced duct main pipe; an air curtain machine is arranged at the upper part of the workshop gate, and air is discharged downwards from the air curtain machine to form an air curtain at the workshop gate; the concentration sensor, the regulating valve, the air curtain machine and the induced draft fan are electrically connected with the PLC, and the PLC is electrically connected with the HMI human-machine interaction interface; normal negative pressure air suction is maintained through the normally open collecting air port, and the adjusting collecting air port is adjusted through the adjusting valve, so that the air suction requirements of different areas under different conditions are met; the workshop gate is used as an air inlet, air outside the workshop is sucked by the air curtain machine to be discharged downwards to form an air curtain at the workshop gate, so that the internal air is prevented from leaking outwards, and meanwhile, the external air enters under the action of negative pressure to enable the air curtain to be further inclined inwards, so that the air leakage is prevented; under the condition of normally breathing in, carry out record analysis to the waste gas concentration that concentration sensor obtained, confirm the concentration area of waste gas, it is common for the region of waste gas production equipment, the HMI man-machine interface of rethread is controlled PLC programmable logic controller, adjust the regulation collection wind gap that corresponds regional, the regional increase induced-draft volume that concentration is high, the regional volume that reduces induced-draft volume that concentration is low, consequently, realize the regional collection of waste gas, it is efficient to waste gas collection, realized promptly carrying out waste gas collection to the whole workshop, simultaneously also because needn't carry out the total change to gas in the workshop, the volume of the waste gas of collecting has been reduced, the operating pressure of back-end waste gas treatment equipment has been alleviateed.
Preferably, the height of the normally open collecting tuyere is more than 6 meters away from the ground of a workshop, and the height of the collecting tuyere is adjusted to be lower than that of the normally open collecting tuyere; normally open collection wind gap 4 is located the influence of other air currents in the reducible workshop of eminence, maintains normal negative pressure and induced drafts, and adjusts collection wind gap 5 and then needs the regional waste gas of corresponding of pertinent collection, consequently needs the height lower, more is close to the equipment or the device that produce waste gas.
Preferably, the normally open collection air ports on the induced draft tube are equal to the interval distribution spacing between the regulation collection air ports; the equidistant arrangement can uniformly collect the waste gas in the workshop, and is convenient for controlling the main air suction area through the regulating valve.
Preferably, the concentration sensors on the induced draft pipe are uniformly distributed, have equal intervals and extend downwards to be arranged in the upper space of the workshop; concentration sensors arranged on the induced duct at intervals divide one induced duct into a plurality of sections, and the main area of the waste gas can be judged by monitoring and calculating the concentration change.
Preferably, a concentration sensor and an air volume sensor are arranged in the induced draft main pipe, and the air volume sensor is electrically connected with the PLC; a concentration sensor in the induced draft main pipe monitors the whole waste gas collection concentration of the waste gas collection system, and can provide relevant parameters for subsequent waste gas treatment equipment; according to the change of the air quantity monitored by the air quantity sensor, the frequency of the induced draft fan is adjusted through the PLC, so that the front-end collection system is kept in a normal negative pressure range, the frequency is increased when the air quantity demand is large, smooth air draft is ensured, and meanwhile, when the air quantity demand is small, the frequency is reduced, so that the effects of energy conservation and consumption reduction are achieved.
Preferably, a plurality of circulating fans are arranged on two sides, the front side and the wall corners on the two sides in the workshop and between the workshop gates, the circulating fans are placed on the ground in a manner of being attached to the wall, air enters from the upper parts of the circulating fans and is exhausted from the front side, the air outlet direction of the circulating fans is perpendicular to the wall surface contacted with the circulating fans, and the circulating fans are electrically connected with the PLC; through adjusting the circulating fan amount of wind size of different positions, guide the air current direction in the workshop, make the lower regional air of exhaust gas concentration flow to the higher region of exhaust gas concentration, the regulation at the higher regional top of rethread increase exhaust gas concentration collects the wind gap volume of induced drafting, realizes the accurate collection of waste gas in this kind of large space in workshop, prevents that waste gas from diffusing to other regions in workshop, reduces the waste gas volume of collecting.
Preferably, a fire damper is arranged between the induced draft main pipe and the induced draft fan, and the fire damper is electrically connected with the PLC; the fire prevention valve is the valve form of closing through the temperature control of memory fused alloy, utilizing the effect of gravity and spring mechanism, and when workshop exhaust gas temperature exceeded the settlement temperature, memory fused alloy fusing utilizes gravity and spring assembly to close the valve, prevents that the intensity of a fire from stretching, and PLC programmable logic controler closes the draught fan simultaneously and prevents that the intensity of a fire from expanding.
Preferably, the air guide pipe is an acid-base-resistant and flame-retardant fireproof air pipe, and a proper acid-base-resistant and flame-retardant fireproof air material is selected according to the specific conditions of a workshop.
Advantageous effects
The utility model maintains normal negative pressure air suction through the normally open collecting air port, and adjusts the adjusting collecting air port through the adjusting valve, thereby meeting the air suction requirements of different areas under different conditions; under the condition of normal air suction, the concentration of the waste gas obtained by a concentration sensor is recorded and analyzed, the concentration area of the waste gas is determined, which is usually the area of waste gas generating equipment, a PLC (programmable logic controller) is programmed and controlled through an HMI (human machine interface), the adjusting and collecting air port of the corresponding area is adjusted, the air suction volume is increased in the area with high concentration, and the air suction volume is reduced in the area with low concentration, so that the regional collection of the waste gas is realized, the waste gas collection efficiency is high, namely, the whole workshop is collected, and simultaneously, because the gas in the workshop is not required to be replaced in full, the quantity of the collected waste gas is reduced, and the working pressure of the subsequent waste gas treatment equipment is reduced; consequently realized one kind and can carry out waste gas collection to workshop is whole, and the waste gas volume of collecting simultaneously is less, and can last the whole waste gas multiple spot collecting system in workshop of high-efficient taking a breath.
Drawings
Fig. 1 is a schematic top view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic side view of the air flow direction during uniform suction of the present invention;
FIG. 4 is a schematic side view of the air flow direction during partial inhalation of the present invention;
fig. 5 is a schematic top view of the circulation fan of the present invention;
FIG. 6 is a schematic view of the side view structure of the present invention with an additional circulating fan;
FIG. 7 is a schematic top view of the circulating fan of the present invention directing the air flow to one corner of the workshop;
fig. 8 is a schematic top view of the circulating fan guiding the airflow direction to the center shaft of the workshop according to the present invention.
Reference numerals in the figures
1. A workshop; 2. a main air draft pipe; 3. an induced draft tube; 4. a normally open collecting tuyere; 5. adjusting a collecting tuyere; 6. adjusting a valve; 7. a concentration sensor; 8. an air curtain machine; 9. a circulating fan; 10. a workshop gate; 11. a fire damper; 12. a PLC programmable logic controller; 13. HMI human-machine interaction interface; 14. an induced draft fan; 15. and an air quantity sensor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the description of the present invention, it is to be understood that the terms "thickness", "width", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-8, the multi-point collecting system for the whole workshop waste gas comprises a workshop 1, an induced draft main pipe 2, collecting air ports and an induced draft fan 14, wherein 2 workshop gates 10 are arranged on the front side of the workshop 1, the induced draft main pipe 2 is arranged outside the back side of the workshop 1, the air outlet of the induced draft main pipe 2 is communicated with the induced draft fan 14, 4 induced draft pipes 3 are communicated with the induced draft main pipe 2 at intervals, and the induced draft pipes 3 penetrate through the back side of the workshop 1 and are arranged at the top in the workshop 1; the collecting air ports are divided into normally-open collecting air ports 4 and adjusting collecting air ports 5, 6 normally-open collecting air ports 4 and 7 adjusting collecting air ports 5 are communicated with a single induced duct 3, an adjusting valve 6 is arranged between each adjusting collecting air port 5 and the induced duct 3, 3 concentration sensors 7 are arranged on the induced duct 3 at intervals, a detection probe of each concentration sensor 7 on the induced duct 3 is arranged outside the induced duct 3 to directly detect gas in a workshop, and an air volume sensor 15 is arranged at a communication section of each induced duct 3 and the induced duct main pipe 2; an air curtain machine 8 is arranged at the upper part of the workshop gate 10, and the air curtain machine 8 discharges air downwards to form an air curtain at the workshop gate 10; the concentration sensor 7, the regulating valve 6, the air curtain machine 8 and the induced draft fan 14 are electrically connected with the PLC 12, and the PLC 12 is electrically connected with the HMI 13; normal negative pressure air suction is maintained through the normally open collecting air port 4, and the adjusting collecting air port 5 is adjusted through the adjusting valve 6, so that the air suction requirements of different areas under different conditions are met; the workshop gate 10 is used as an air inlet, air curtain machine 8 sucks the gas outside the workshop to be discharged downwards to form an air curtain at the workshop gate 10, so that the gas inside the workshop is prevented from leaking outwards, and the external air enters under the action of negative pressure to further tilt the air curtain inwards, so that the gas is prevented from leaking; under the condition of normally breathing in, carry out record analysis to the waste gas concentration that concentration sensor 7 obtained, confirm the concentrated region of waste gas, it is the region that waste gas produced equipment commonly to be, carry out programming control to PLC programmable logic controller 12 through HMI human-computer interface 13, adjust the regulation that corresponds the region and collect wind gap 5, the regional increase induced-draft volume that concentration is high, the regional reduction induced-draft volume that concentration is low, consequently, realize the regional collection of waste gas, it is efficient to waste gas collection, realized promptly carrying out waste gas collection to the workshop whole, simultaneously also owing to needn't carry out the total change to gas in the workshop, the volume of the waste gas of collecting has been reduced, the operating pressure of back-end exhaust-gas treatment equipment has been alleviateed.
According to the further technical scheme, the height of the normally open collecting tuyere 4 is more than 6 meters away from the ground of a workshop 1, and the height of the collecting tuyere 5 is adjusted to be lower than that of the normally open collecting tuyere 4; normally open and collect the influence of other air currents in the wind gap 4 is located the reducible workshop of eminence, maintains normal negative pressure and induced drafts, and adjust and collect wind gap 5 then need the regional waste gas of corresponding of pertinent collection, consequently need highly lower, more be close to the equipment or the device that produces waste gas.
In the further technical scheme, the normally open collecting air ports 4 on the induced air pipe 3 are equal to the interval distribution distance between the adjusting collecting air ports 5; the equidistant arrangement can uniformly collect the waste gas in the workshop and is convenient for controlling the main air suction area through the regulating valve.
According to the further technical scheme, the concentration sensors 7 on the induced air pipe 3 are uniformly distributed, have equal intervals and extend downwards to be arranged in the upper space of the workshop 1; concentration sensors arranged on the induced duct at intervals divide one induced duct into a plurality of sections, and main areas of waste gas can be judged by monitoring and calculating concentration change, for example, 3 concentration sensors 7 divide the induced duct 3 into front, middle and rear 3 areas in the embodiment;
referring to fig. 3, the air flow direction during uniform air suction is shown, and waste gas is collected from all the normally open collecting tuyeres 4 and the adjusting collecting tuyeres 5; the air flow direction during partial air suction is shown by referring to fig. 4, at this time, the adjusting and collecting air port 5 close to the main air suction pipe 2 at the rear section of the air suction pipe 3 is opened, so that the air flow flows to the back of the workshop integrally, the area suitable for waste gas generating equipment is close to the back of the workshop, and the opening and closing states of the collecting air port 5 can be adjusted according to the specific conditions in other areas, so that the air flow direction in the workshop can be adjusted.
According to a further technical scheme, a concentration sensor 7 and an air volume sensor 15 are arranged in the induced draft main pipe 2, and the air volume sensor 15 is electrically connected with the PLC 12; a concentration sensor 7 in the induced draft main pipe 2 monitors the whole waste gas collection concentration of the waste gas collection system, and can provide relevant parameters for the subsequent waste gas treatment equipment; monitoring the air volume change according to the air volume sensor 15, adjusting the frequency of the induced draft fan 14 through the PLC 12, keeping the front end collection system in a normal negative pressure range, improving the frequency to ensure smooth air draft when the induced air volume demand is large, and reducing the frequency to play a role in energy conservation and consumption reduction when the induced air volume demand is small
According to a further technical scheme, a plurality of circulating fans 9 are arranged between two sides, the front side and the wall corners at the two sides and between workshop gates 10 in a workshop 1, 4 circulating fans 9 are arranged on two sides in the workshop respectively, 1 circulating fan 9 is arranged on the front side and the wall corners at the two sides of the workshop respectively and leans against the wall at the front side of the workshop, 2 circulating fans 9 are arranged between the workshop gates 10, the circulating fans 9 are placed on the ground by being attached to the wall, air is discharged from the air inlet front side at the upper part of each circulating fan 9, the air outlet direction of each circulating fan is vertical to the wall surface contacted with the circulating fan, and the circulating fans 9 are electrically connected with a PLC (programmable logic controller) 12; the air flow direction in the workshop 1 is guided by adjusting the air volume of the circulating fans 9 at different positions, so that the air in the area with lower waste gas concentration flows to the area with higher waste gas concentration, and the air suction volume of the adjusting and collecting air inlet 5 at the top of the area with higher waste gas concentration is increased, so that the waste gas in the large space of the workshop is accurately collected, the waste gas is prevented from being diffused to other areas of the workshop, and the collected waste gas volume is reduced;
referring to fig. 7, the direction of the air flow guided by the circulating fan to one corner of the workshop is shown, and the circulating fan 9 on one side inside the workshop, the circulating fan 9 on the corner of the wall and the circulating fan 9 between the doors 10 of the workshop are turned on to guide the air flow to the opposite corner; referring to fig. 8, the circulating fan guides the direction of the air flow to the center shaft of the workshop, the circulating fans 9 on two sides inside the workshop, the circulating fans 9 at the corners of the wall and the circulating fans 9 between the workshop gates 10 are opened to guide the air flow to the center shaft of the workshop; meanwhile, the air flow direction to be guided can be corrected by adjusting the air volume of the fan 9 of the circulating fan.
According to a further technical scheme, a fire damper 11 is arranged between the induced draft main pipe 2 and the induced draft fan 14, and the fire damper 11 is electrically connected with the PLC 12; the fire prevention valve 11 is a valve form closed by the temperature control of the memory alloy melt, the action of gravity and the action of a spring mechanism, when the temperature of the exhaust gas in a workshop exceeds a set temperature, the memory alloy melt is fused, the valve is closed by the gravity and the spring device to prevent the fire from spreading, and meanwhile, the PLC 12 closes the induced draft fan 14 to prevent the fire from expanding.
According to a further technical scheme, the air inducing pipe 3 is an acid-base-resistant and flame-retardant fireproof air pipe, and a proper acid-base-resistant and flame-retardant fireproof air material is selected according to the specific conditions of a workshop.
The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention, and it will be apparent to those skilled in the art that various modifications may be made to the disclosed embodiments, and that other structures may be devised in accordance with the principles of the present invention without departing from the scope of the invention.
Claims (8)
1. The utility model provides a whole waste gas multiple spot collecting system in workshop, includes workshop (1), induced draft house steward (2), collects wind gap, draught fan (14), its characterized in that: the front side of the workshop (1) is provided with a plurality of workshop gates (10), the outside of the back side of the workshop is provided with an induced draft main pipe (2), the air outlet of the induced draft main pipe (2) is communicated with an induced draft fan (14), a plurality of induced draft pipes (3) are communicated on the induced draft main pipe (2) at intervals, and the induced draft pipes (3) penetrate through the back side of the workshop (1) and are arranged at the top in the workshop (1); the collecting air ports are divided into normally open collecting air ports (4) and adjusting collecting air ports (5), a plurality of normally open collecting air ports (4) and adjusting collecting air ports (5) are communicated with the induced air pipe (3), an adjusting valve (6) is arranged between the adjusting collecting air ports (5) and the induced air pipe (3), a plurality of concentration sensors (7) are arranged on the induced air pipe (3) at intervals, a detection probe of the concentration sensor (7) on the induced air pipe (3) is arranged outside the induced air pipe (3) to directly detect gas in a workshop, and an air volume sensor (15) is arranged in a communicating section of each induced air pipe (3) and the induced air main pipe (2); an air curtain machine (8) is arranged at the upper part of the workshop gate (10), and the air curtain machine (8) discharges air downwards to form an air curtain at the workshop gate (10); concentration sensor (7), governing valve (6), air curtain machine (8), draught fan (14), air sensor (15) and PLC programmable logic controller (12) electric connection, PLC programmable logic controller (12) and HMI human-computer interaction interface (13) electric connection.
2. The system for multipoint collection of plant whole exhaust gas according to claim 1, wherein: the height of the normally open collecting air port (4) is more than 6 meters away from the ground of the workshop (1), and the height of the adjusting collecting air port (5) is lower than that of the normally open collecting air port (4).
3. The system for multipoint collection of plant whole exhaust gas according to claim 1, wherein: the normally open collecting air ports (4) on the induced draft pipe (3) are equal to the interval distribution distance between the adjusting collecting air ports (5).
4. The system for multipoint collecting of the whole exhaust gas of the workshop according to claim 3, wherein: the concentration sensors (7) on the induced draft pipe (3) are uniformly distributed, have equal intervals and extend downwards to be arranged in the upper space of the workshop (1).
5. The system for multipoint collecting of the whole exhaust gas of the workshop according to claim 4, wherein: a concentration sensor (7) and an air volume sensor (15) are arranged in the air inducing main pipe (2), and the concentration sensor (7) and the air volume sensor (15) are electrically connected with the PLC (programmable logic controller) (12).
6. The system for multipoint collecting of whole exhaust gas of a plant according to any one of claims 1 to 5, wherein: the circulating fans (9) are arranged on two sides, the front face and the corner positions of the two sides inside the workshop (1) and between workshop gates (10), the circulating fans (9) are placed in a wall-to-ground mode, air enters from the upper portion of each circulating fan (9), air is discharged from the front face, the air outlet direction of each circulating fan is perpendicular to the wall face in contact with the corresponding circulating fan, and the circulating fans (9) are electrically connected with the PLC (programmable logic controller) (12).
7. The system for multipoint collecting of the whole exhaust gas of the workshop according to claim 6, wherein: be equipped with fire prevention valve (11) between induced air house steward (2) and draught fan (14), fire prevention valve (11) and PLC programmable logic controller (12) electric connection.
8. The system for multipoint collection of plant whole exhaust gas according to claim 7, wherein: the air guide pipe (3) is an acid-base-resistant flame-retardant fireproof air pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223216319.7U CN218798028U (en) | 2022-12-02 | 2022-12-02 | Workshop whole waste gas multi-point collecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223216319.7U CN218798028U (en) | 2022-12-02 | 2022-12-02 | Workshop whole waste gas multi-point collecting system |
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| CN218798028U true CN218798028U (en) | 2023-04-07 |
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| CN202223216319.7U Active CN218798028U (en) | 2022-12-02 | 2022-12-02 | Workshop whole waste gas multi-point collecting system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117655043A (en) * | 2023-10-13 | 2024-03-08 | 北京朝阳环境集团有限公司 | Refuse dump odor extraction device, refuse dump odor extraction method, refuse dump odor extraction system, refuse dump odor extraction server and refuse dump odor storage medium |
| CN118425436A (en) * | 2024-07-03 | 2024-08-02 | 广州华科环保工程有限公司 | Treatment method, equipment and system for production waste gas |
-
2022
- 2022-12-02 CN CN202223216319.7U patent/CN218798028U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117655043A (en) * | 2023-10-13 | 2024-03-08 | 北京朝阳环境集团有限公司 | Refuse dump odor extraction device, refuse dump odor extraction method, refuse dump odor extraction system, refuse dump odor extraction server and refuse dump odor storage medium |
| CN118425436A (en) * | 2024-07-03 | 2024-08-02 | 广州华科环保工程有限公司 | Treatment method, equipment and system for production waste gas |
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