CN210613291U - Waste gas treatment environmental protection equipment - Google Patents

Waste gas treatment environmental protection equipment Download PDF

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Publication number
CN210613291U
CN210613291U CN201921400503.2U CN201921400503U CN210613291U CN 210613291 U CN210613291 U CN 210613291U CN 201921400503 U CN201921400503 U CN 201921400503U CN 210613291 U CN210613291 U CN 210613291U
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China
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waste gas
tank
reversing valve
packed tower
fan
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CN201921400503.2U
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Chinese (zh)
Inventor
胥小红
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Ningbo Junsheng Environmental Protection Technology Co ltd
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Ningbo Junsheng Environmental Protection Technology Co ltd
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Abstract

The utility model discloses an environment-friendly waste gas treatment device, which comprises a gas collecting hood, an air pipe, a main fan, an adsorption unit containing active carbon, a spraying packed tower and a discharge fan which are connected in sequence; the top of the spraying packing tower is provided with a spray head, the bottom of the spraying packing tower is provided with an air inlet and a water outlet, the adsorption unit and the spraying packing tower are respectively provided with activated carbon regeneration and absorption liquid circulation equipment, and a plurality of groups of reversing valves of a control pipeline are also arranged; through the adsorption tank containing activated carbon and the spray packed tower adopting the absorption liquid to spray, the system can simultaneously treat organic waste gas and inorganic waste gas. The utility model discloses the waste gas treatment environmental protection equipment who obtains, the organic and inorganic two kinds of composition of laboratory waste gas can be fully absorbed, the treatment effect of waste gas has been improved, and absorption efficiency to two kinds of type waste gas all can reach 90%, has guaranteed exhaust gas's security, carries out cyclic utilization to the absorption liquid that sprays the usefulness simultaneously, has practiced thrift the resource.

Description

Waste gas treatment environmental protection equipment
Technical Field
The utility model relates to a waste gas treatment field, especially a waste gas treatment environmental protection equipment.
Background
In the daily operation of the laboratory, corresponding waste gas is inevitably generated, and if the waste gas is directly discharged into the atmosphere without being collected and processed, the waste gas will inevitably cause the pollution of the surrounding environment and harm the health of laboratory personnel and surrounding residents. Therefore, the waste gas generated in the laboratory must be purified and then discharged; according to the investigation, the main components of the laboratory waste gas can be divided into organic and inorganic parts, so that an exhaust gas treatment system which can absorb the organic waste gas and treat the inorganic waste gas must be designed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the not enough of above-mentioned prior art and providing a reform transform, maintain simple, convenient operation and the good laboratory exhaust gas system of treatment effect.
In order to realize the aim, the utility model relates to an environment-friendly waste gas treatment device, which comprises a gas collecting hood, an air pipe, a main fan, an adsorption unit containing active carbon, a spraying packed tower and a discharge fan which are connected in sequence; the top of the spray packed tower is provided with a spray head, and the bottom of the spray packed tower is provided with an air inlet and a water outlet; through the absorption unit and the spray packed tower adopting the absorption liquid to spray, the system can simultaneously treat organic waste gas and inorganic waste gas, so that the discharged gas is harmless, and the main fan and the discharge fan can adopt frequency conversion control to adjust the air quantity.
In order to realize the cyclic utilization of resources and reduce waste, the spraying packed tower is connected with a circulating water tank through a water outlet of the spraying packed tower, the circulating water tank is connected with a water pump, and the water pump is connected with a spray head.
In order to ensure the absorption liquid slag removal regeneration effect of the circulating water tank, the circulating water tank comprises a sedimentation tank and a clear liquid tank, a precipitator spraying device is arranged on the sedimentation tank, a stirring device is arranged in the center of the sedimentation tank, and a filter layer is arranged between the sedimentation tank and the clear liquid tank.
In order to facilitate the replacement of the activated carbon, the adsorption unit comprises an adsorption tank and a standby tank which are connected in parallel and contain the activated carbon, a first reversing valve used for switching the adsorption tank and the standby tank is arranged between the adsorption unit and the main fan, and a second reversing valve is arranged between the adsorption unit and the spray packed tower.
In order to prolong the service life of the activated carbon and avoid the blockage of a pipeline, a pre-filter is arranged between the gas collecting hood and the main fan.
In order to ensure the reliability of the absorption of the activated carbon in the waste gas treatment process, ensure the cleanliness of the gas during the emission and reduce the treatment cost of the activated carbon, the adsorption unit is also connected with desorption equipment, and the desorption equipment comprises a nitrogen making machine, a desorption fan, a heater and a condenser; the nitrogen making machine, the desorption fan, the heater, the adsorption unit and the condenser are sequentially connected, a third reversing valve is further arranged between the heater and the adsorption unit, and a fifth reversing valve is arranged between the adsorption unit and the condenser; and the air outlet of the condenser is connected with the adsorption unit and the heater to form a loop, and a fourth reversing valve is arranged at the connection position.
In order to ensure the reliability of cold air circulation, a circulating fan and a nitrogen storage tank are also arranged between the condenser and the fourth reversing valve.
In order to avoid residual waste gas from flowing into a pipeline where the desorption equipment is located, a sixth reversing valve is arranged between the adsorption tank and the fifth reversing valve, and the sixth reversing valve is further connected with the spray packed tower; and a seventh reversing valve is arranged between the standby tank and the fifth reversing valve and is also connected with the spray packed tower.
In order to avoid the emission of non-standard waste gas caused by insufficient absorption, a gas composition monitoring device and an eighth reversing valve are arranged between the spray packed tower and the emission fan, a return pipeline for conveying the non-standard waste gas is arranged between the eighth reversing valve and the outlet of the main fan, and a return fan is arranged on the return pipeline.
In order to avoid the influence of water vapor on the monitoring result, a drying box is arranged between the gas component monitoring device and the spraying packed tower.
The utility model discloses the waste gas treatment environmental protection equipment who obtains, the organic and inorganic two kinds of composition of laboratory waste gas can be fully absorbed, the treatment effect of waste gas has been improved, and absorption efficiency to two kinds of type waste gas all can reach 90%, has guaranteed exhaust gas's security, carries out cyclic utilization to active carbon and the absorption liquid that sprays the usefulness simultaneously, has practiced thrift the resource.
Drawings
FIG. 1 is a schematic view of an embodiment 1 of the environmental protection equipment for waste gas treatment of the present invention;
FIG. 2 is a schematic view showing the construction of a circulating water tank in the environmental protection apparatus for treating exhaust gas in example 1;
FIG. 3 is a schematic view of an embodiment 2 of the environmental protection apparatus for treating waste gas of the present invention.
In the figure: the device comprises a gas collecting hood 1, an air pipe 2, a main fan 3, an adsorption unit 4, a spray packed tower 5, a discharge fan 6, a circulating water tank 7, a water pump 8, a nitrogen making machine 9, a desorption fan 10, a heater 11, a circulating fan 12, a nitrogen storage tank 13, a pre-filter 14, a condenser 15, a liquid storage tank 16, a gas component monitoring device 17, a drying box 18, a return pipeline 19, a return fan 20, an adsorption tank 40, a standby tank 41, a spray head 50, an air inlet 51, a water outlet 52, a sedimentation tank 70, a clear liquid tank 71, a precipitant spraying device 72, a stirring device 73, a filter layer 74, a first reversing valve 100, a second reversing valve 101, a third reversing valve 102, a fourth reversing valve 103, a fifth reversing valve 104, a sixth reversing valve 105, a seventh reversing valve 106 and an eighth reversing valve 107.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1:
the waste gas treatment environmental protection equipment described in this embodiment, as shown in fig. 1, includes a gas collecting hood 1, an air duct 2, a main blower 3, an adsorption unit 4 containing activated carbon, a spray packed tower 5, and a discharge blower 6, which are connected in sequence; the top of the spraying packed tower 5 is provided with a spray head 50, and the bottom of the spraying packed tower 5 is provided with an air inlet 51 and a water outlet 52; through containing the absorption unit 4 and adopting the spray packed tower 5 that the absorption liquid sprayed, this system can handle organic waste gas and inorganic waste gas simultaneously, makes the exhaust gas harmless, and main fan 3 and emission fan 6 can adopt frequency conversion control to adjust the amount of wind.
In order to realize the recycling of resources and reduce waste, as shown in fig. 1, the spray packed tower 5 is connected with a circulating water tank 7 through a water outlet 52, a water pump 8 is further connected to the circulating water tank 7, and the water pump 8 is connected with a spray head 50.
In order to prolong the service life of the activated carbon and avoid pipeline blockage, a pre-filter 14 is arranged between the gas collecting hood 1 and the main fan 3.
In order to facilitate the replacement of the activated carbon, as shown in fig. 1, the adsorption unit 4 includes an adsorption tank 40 and a spare tank 41 which are connected in parallel and contain the activated carbon, the adsorption unit 4 is respectively connected with the main blower 3 and the spray packed tower 5, a first reversing valve 100 for switching the adsorption tank 40 and the spare tank 41 is arranged between the adsorption unit 4 and the main blower 3, and a second reversing valve 101 is arranged between the adsorption unit 4 and the spray packed tower 5.
In order to ensure the reliability of the activated carbon absorption in the waste gas treatment process, as shown in fig. 1, the cleanliness of the gas during the discharge is ensured, and the treatment cost of the activated carbon is reduced, the adsorption unit 4 is also connected with desorption equipment, and the desorption equipment comprises a nitrogen generator 9, a desorption fan 10, a heater 11 and a condenser 15; the nitrogen making machine 9, the desorption fan 10, the heater 11, the adsorption unit 4 and the condenser 15 are sequentially connected, a third reversing valve 102 is further arranged between the heater 11 and the adsorption unit 4, and a fifth reversing valve 104 is arranged between the adsorption unit 4 and the condenser 15; the outlet of the condenser 15 is connected to the adsorption unit 4 and the heater 11 to form a loop, and a fourth direction valve 103 is provided at the connection.
In order to ensure the reliability of the cooling air circulation, as shown in fig. 1, a circulation fan 12 and a nitrogen storage tank 13 are further provided between the condenser 15 and the fourth direction changing valve 103.
In order to avoid residual waste gas from flowing into the pipeline of the desorption equipment, as shown in fig. 1, a sixth reversing valve 105 is arranged between the adsorption tank 40 and the fifth reversing valve 104, and the sixth reversing valve 105 is further connected with the spray packed tower 5; a seventh reversing valve 106 is arranged between the standby tank 41 and the fifth reversing valve 104, and the seventh reversing valve 106 is also connected with the spray packed tower 5.
In order to ensure the effect of the absorption liquid slag removal and regeneration of the circulating water tank, as shown in fig. 2, the circulating water tank 7 comprises a sedimentation tank 70 and a clear liquid tank 71, a precipitator spraying device 72 is arranged on the sedimentation tank 70, a stirring device 73 is arranged in the center of the sedimentation tank 70, and a filter layer 74 is arranged between the sedimentation tank 70 and the clear liquid tank 71; the precipitant spraying device 72 in this embodiment employs a nozzle driven by a metering pump; in actual use, after flowing out from the water outlet 52 at the bottom of the spray packed tower 5, the absorption liquid enters the sedimentation tank 70 from the tank bottom, the precipitant spraying device 72 sprays the precipitant from the upper part of the sedimentation tank 70, the stirring device 73 rotates and stirs, after reaction, the precipitate sinks to the bottom of the sedimentation tank 70, the supernatant liquid flows into the clear liquid tank 71 along the tank edge of the sedimentation tank 70 through the filtering layer 74, as shown in fig. 1, the supernatant liquid is continuously pumped to the upper part of the spray packed tower 5 by the water pump 8 and is continuously used as the absorption agent.
In this embodiment, the condenser 15 is connected to the liquid storage tank 16, and the condensed liquid in the condenser 15 is discharged to the liquid storage tank 16 for storage for subsequent treatment.
In the actual working process, the waste gas flows into the adsorption unit 4 through the gas collecting hood 1 and the main fan 3 under the action of the main fan 3, at the moment, the third reversing valve 102 controls and switches the adsorption tank 40 and the spare tank 41, the waste gas flows into one of the adsorption tank 40 or the spare tank 41, and most of the organic waste gas is absorbed in the adsorption unit 4; then the waste gas enters the tower through the lower part of a spraying packed tower 5, a spray head 50 sprays absorption liquid from the upper part, the absorption liquid forms a liquid film among the packing in the tower and is fully contacted with the waste gas, the absorption of most inorganic waste gas is completed, finally, the treated gas is discharged under the action of a discharge fan 6, and the absorption liquid is sucked to the spray head 50 by a water pump 8 for recycling after the slag removal treatment in a circulating water tank is completed; taking the adsorption work on the adsorption tank 40 as an example, at this time, the desorption work can be performed on the spare tank 41, firstly, the nitrogen generator 9 is communicated with the spare tank 41 by switching the third reversing valve 102 and the fourth reversing valve 103, and the main fan 3 is communicated with the adsorption tank 40 by switching the first reversing valve; at the moment, the main fan 3 and the adsorption tank 40 are communicated with the spray packed tower 5 through pipelines where the sixth reversing valve 105 and the second reversing valve 101 are located; the nitrogen making machine 9 fills nitrogen into the spare tank 41, at this time, because the spare tank 41 is left with waste gas to be treated before switching, the waste gas to be treated flows into the spray packed tower 5 through the seventh reversing valve 106, after the waste gas to be treated is exhausted, the seventh reversing valve 106 reverses to communicate the spare tank 41 with the condenser, the heater 11 starts to work, and thus the spare tank 41 is subjected to subsequent desorption work; in the desorption process to reserve tank 41, heater 11 work, heat the nitrogen gas of input reserve tank 41 in order to carry out the desorption, after the organic waste gas of nitrogen gas mixed activated carbon internal adsorption, get into condenser 15 condensation separation, nitrogen gas after being separated cooling gets into nitrogen storage tank 13, after the desorption of a period of time, the switching-over of fourth switching-over valve 103, low temperature nitrogen gas in nitrogen storage tank 13 gets into reserve tank 41 and the activated carbon that the cooling is heated under circulating fan 12's effect.
The waste gas treatment environmental protection equipment that this embodiment provided, can fully absorb the organic and two kinds of inorganic composition of laboratory waste gas, the treatment effect of waste gas has been improved, absorption efficiency to two kinds of type waste gas all can reach 90%, the security of exhaust gas has been guaranteed, carry out cyclic utilization to the absorption liquid that sprays the usefulness simultaneously, the resource has been practiced thrift, adopt the adsorption and desorption to go on simultaneously and to absorption liquid cyclic utilization's method, the resource that waste gas treatment consumed has not only been practiced thrift, waste gas treatment's effect has been guaranteed simultaneously.
Example 2:
in the environmental protection equipment for waste gas treatment described in this embodiment, as shown in fig. 3, in addition to the features described in embodiment 1, in order to avoid the discharge of non-standard waste gas due to insufficient absorption, as shown in fig. 3, a gas component monitoring device 17 and an eighth reversing valve 107 are arranged between the spray packed tower 5 and the discharge fan 6, a return line 19 for conveying non-standard waste gas is arranged between the eighth reversing valve 107 and the outlet of the main fan 3, and a return fan 20 is arranged on the return line 19; and a drying box 18 is also arranged between the gas component monitoring device 17 and the spraying packed tower 5.
In the actual working process, when the gas component monitoring device 17 detects that the pollutant component in the gas to enter the exhaust fan 6 exceeds the standard, the eighth reversing valve 107 reverses to communicate the spray packed tower 5 with the return pipeline 19, and the return fan 20 retreats the gas exceeding the standard before sending the gas exceeding the standard back to the adsorption tank 40 or the standby tank 41.
The waste gas treatment environmental protection equipment that this embodiment provided has add the pipeline that monitors and reprocess the gas that exceeds standard, has further improved the reliability of exhaust-gas treatment system.

Claims (6)

1. An environment-friendly waste gas treatment device comprises a gas collecting hood (1), an air pipe (2), a main fan (3), an adsorption unit (4) containing activated carbon, a spraying packed tower (5) and a discharge fan (6) which are connected in sequence; the device is characterized in that a spray head (50) is arranged at the top of the spray packed tower (5), an air inlet (51) and a water outlet (52) are arranged at the bottom of the spray packed tower (5), the spray packed tower (5) is connected with a circulating water tank (7) through the water outlet (52), a water pump (8) is further connected to the circulating water tank (7), and the water pump (8) is connected with the spray head (50);
the adsorption unit (4) comprises an adsorption tank (40) and a standby tank (41) which are connected in parallel and contain activated carbon, the adsorption unit (4) is respectively connected with a main fan (3) and a spraying packed tower (5), a first reversing valve (100) for switching the adsorption tank (40) and the standby tank (41) is arranged between the adsorption unit (4) and the main fan (3), and a second reversing valve (101) is arranged between the adsorption unit (4) and the spraying packed tower (5);
the adsorption unit (4) is also connected with desorption equipment, and the desorption equipment comprises a nitrogen generator (9), a desorption fan (10), a heater (11) and a condenser (15); the nitrogen making machine (9), the desorption fan (10), the heater (11), the adsorption unit (4) and the condenser (15) are sequentially connected, a third reversing valve (102) is further arranged between the heater (11) and the adsorption unit (4), and a fifth reversing valve (104) is arranged between the adsorption unit (4) and the condenser (15); the air outlet of the condenser (15) is connected with the adsorption unit (4) and the heater (11) to form a loop, and a fourth reversing valve (103) is arranged at the connection position; a circulating fan (12) and a nitrogen storage tank (13) are also arranged between the condenser (15) and the fourth reversing valve (103); a sixth reversing valve (105) is further arranged between the adsorption tank (40) and the fifth reversing valve (104), and the sixth reversing valve (105) is further connected with the spray packed tower (5); a seventh reversing valve (106) is further arranged between the standby tank (41) and the fifth reversing valve (104), and the seventh reversing valve (106) is further connected with the spray packed tower (5).
2. The waste gas treatment environment-friendly device as claimed in claim 1, wherein a gas composition monitoring device (17) and an eighth reversing valve (107) are arranged between the spray packed tower (5) and the exhaust fan (6), a return pipeline (19) for conveying non-standard waste gas is arranged between the eighth reversing valve (107) and the main fan (3), and a return fan (20) is arranged on the return pipeline (19).
3. The waste gas treatment environmental protection equipment according to claim 1 or 2, wherein the circulating water tank (7) comprises a sedimentation tank (70) and a clear liquid tank (71), a precipitator spraying device (72) is arranged on the sedimentation tank (70), a stirring device (73) is arranged in the sedimentation tank (70), and a filtering layer (74) is arranged between the sedimentation tank (70) and the clear liquid tank (71).
4. An environment-friendly equipment for waste gas treatment as claimed in claim 1 or 2, characterized in that a pre-filter is arranged between the gas-collecting hood (1) and the main blower (3).
5. The waste gas treatment environment-friendly device as claimed in claim 3, wherein a pre-filter is arranged between the gas collecting hood (1) and the main fan (3).
6. The exhaust gas treatment environmental protection apparatus according to claim 2, wherein a drying box (18) is further provided between the gas composition monitoring device (17) and the spray packed tower (5).
CN201921400503.2U 2019-08-27 2019-08-27 Waste gas treatment environmental protection equipment Active CN210613291U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921400503.2U CN210613291U (en) 2019-08-27 2019-08-27 Waste gas treatment environmental protection equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921400503.2U CN210613291U (en) 2019-08-27 2019-08-27 Waste gas treatment environmental protection equipment

Publications (1)

Publication Number Publication Date
CN210613291U true CN210613291U (en) 2020-05-26

Family

ID=70742884

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921400503.2U Active CN210613291U (en) 2019-08-27 2019-08-27 Waste gas treatment environmental protection equipment

Country Status (1)

Country Link
CN (1) CN210613291U (en)

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