CN111804095A - A exhaust treatment device for processing of traditional chinese medicine plaster - Google Patents
A exhaust treatment device for processing of traditional chinese medicine plaster Download PDFInfo
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- CN111804095A CN111804095A CN202010807492.0A CN202010807492A CN111804095A CN 111804095 A CN111804095 A CN 111804095A CN 202010807492 A CN202010807492 A CN 202010807492A CN 111804095 A CN111804095 A CN 111804095A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/42—Basic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B3/00—Condensers in which the steam or vapour comes into direct contact with the cooling medium
- F28B3/08—Condensers in which the steam or vapour comes into direct contact with the cooling medium with rotatable members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F5/00—Elements specially adapted for movement
- F28F5/06—Hollow screw conveyors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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Abstract
The application relates to the technical field of plaster processing waste gas treatment, and discloses a waste gas treatment device for traditional Chinese medicine plaster processing, which comprises a first-stage filter tank, a second-stage filter tank connected with the first-stage filter tank, and a cooling device arranged at the outlet end of the second-stage filter tank; the first-stage filter box comprises a box body, a feeding pipe and a discharging pipe which are arranged on the box body, and a spraying device arranged between the feeding pipe and the discharging pipe; the spraying device is used for separating the waste gas and the particles. This application has the effect of carrying out better processing with the waste gas that produces, has reduced the pollution that exhaust emission caused the environment.
Description
Technical Field
The application relates to the technical field of plaster processing waste gas treatment, in particular to a waste gas treatment device for traditional Chinese medicine plaster processing.
Background
At present, in the production process of the traditional Chinese medicine plaster, a large amount of smoke with high temperature and certain concentration can be generated, and the smoke contains certain particles. The smoke is a great amount of thermal oxidation decomposition products generated by the traditional Chinese medicine plaster under the high temperature condition, and is accompanied with certain particle generation. Certain noxious and irritating odors are generated during the thermal oxidation process. Therefore, the smoke pollutants generated in the production process of the traditional Chinese medicine plaster are complex and the temperature of the smoke is high, so that the waste gas is directly discharged into the air, the environment is polluted, and the traditional Chinese medicine plaster is not environment-friendly enough.
Disclosure of Invention
In order to handle the waste gas in the traditional chinese medicine plaster production process, reduce the pollution that waste gas discharge caused the environment, this application provides a waste gas treatment device for traditional chinese medicine plaster processing.
The application provides a waste gas treatment device for traditional chinese medicine plaster processing adopts following technical scheme:
a waste gas treatment device for processing traditional Chinese medicine plaster comprises a first-stage filter tank, a second-stage filter tank connected with the first-stage filter tank, and a cooling device arranged at the outlet end of the second-stage filter tank;
the first-stage filter box comprises a box body, a feeding pipe and a discharging pipe which are arranged on the box body, and a spraying device arranged between the feeding pipe and the discharging pipe;
the spraying device is used for separating the waste gas and the particles.
By adopting the technical scheme, in the production process of the plaster, the generated waste gas enters the first-stage filter tank, the spraying device is arranged in the first-stage filter tank, the medium in the first-stage filter tank is water and sprays the water to the smoke gas, the particles doped in the waste gas can move downwards under the action of spraying, and the high-temperature smoke gas flows upwards, so that the effect of primarily separating the waste gas from the particles is achieved; and, spray set can also play certain cooling effect to waste gas, and waste gas enters into the second grade rose box from first grade rose box in, and the second grade rose box can be handled waste gas, also can realize carrying out the secondary separation to waste gas and granule when handling, enters into at last in the cooling device and cools off the back with waste gas and discharges.
Preferably, the spraying device comprises a rotating shaft rotatably connected to two inner walls of the box body, a connecting pipe sleeved outside the rotating shaft and atomizing nozzles arranged on the connecting pipe at intervals;
one end of the connecting pipe is provided with a hose which extends out of the box body and is connected to a water source.
By adopting the technical scheme, one end of the hose is communicated with a water source, water is introduced into a cavity between the connecting pipe and the rotating shaft after the water is introduced, and the water is sprayed through an atomizing nozzle arranged on the connecting pipe to spray particles and dust doped in waste gas; because the pivot is rotated and is connected on the box inner wall, the pivot rotates the rotation that drives connecting pipe and atomizing nozzle, can increase atomizing nozzle's the area that sprays, makes the separation effect of waste gas and granule better.
Preferably, one end of the rotating shaft is provided with a servo motor.
Through adopting above-mentioned technical scheme, servo motor drive pivot rotate, can drive the pivot and rotate an angle, make the pivot rotation back and forth, make atomizing nozzle's orientation and below oblique spray as far as possible.
Preferably, the filter cotton layer is arranged below the feeding pipe;
the filtering cotton layer comprises a frame arranged in the box body and filtering cotton arranged in the frame.
By adopting the technical scheme, the filtering cotton layer is arranged below the feeding pipe and adsorbs solid particles sprayed in the box body, so that the effect of collecting the particles is achieved; the filter pulp is established in the frame simultaneously, and the frame is used for supporting the filter pulp, when the filter effect of filter pulp is not good, can take out the frame with the filter pulp and change.
Preferably, the second-stage filter tank and the first-stage filter tank have the same structure, and the spraying device is used for spraying weak acid or weak base solution.
By adopting the technical scheme, the structure of the second-stage filter box is the same as that of the first-stage filter box, but the media in the spraying device are different, the spraying media in the second-stage filter box are weak acid or weak base solutions, the waste gas is doped with acid-containing gas or alkaline-containing gas, the waste gas is sprayed by the weak base or weak acid media, the waste gas is neutralized, harmful substances in the waste gas are removed as far as possible, and the waste gas treatment effect is achieved.
Preferably, the cooling device comprises a shell, a vent pipe arranged in the shell and a condensation pipe arranged outside the vent pipe;
the breather pipe with the exit end of second grade rose box links to each other, the condenser pipe extends along the length direction spiral of breather pipe.
Through adopting above-mentioned technical scheme, the waste gas through the processing that spills over in the second level rose box still contains certain temperature, need to discharge again after cooling down waste gas, and waste gas enters into the breather pipe from the discharging pipe on the second level rose box in, removes along the direction of breather pipe, and at the in-process that removes, the condenser pipe of the outside of breather pipe cools off the breather pipe to reach the effect of giving the waste gas cooling.
Preferably, be provided with the bull stick in the breather pipe, the one end of bull stick stretches out from the casing is inside to outside, be provided with the spiral stirring rake on the bull stick, the one end of bull stick is provided with the second motor, the drive the bull stick rotates and is used for making the area of contact increase of waste gas and condenser pipe.
Through adopting above-mentioned technical scheme, the rotation that the second motor rotated drive bull stick and stirring rake, and then drives waste gas and roll, the area of contact of increase waste gas and condenser pipe to faster cooling to waste gas has improved the work efficiency to waste gas cooling.
Preferably, the deodorizing device also comprises a deodorizing mechanism arranged on the vent pipe;
the smell removing mechanism comprises a smell removing pipe detachably connected to the vent pipe through a flange and active carbon arranged in the smell removing pipe, and the smell removing mechanism is arranged at a position close to the second-stage filter box.
Through adopting above-mentioned technical scheme, remove the initial end that the flavor mechanism set up at the discharge pipe end of second level rose box and cooling device, can adsorb the gas that overflows from the second level rose box to in detach remaining smell in the waste gas, simultaneously through removing flavor pipe flange joint on the pipeline, be convenient for change, be convenient for remove the installation and the dismantlement of flavor mechanism.
Preferably, the vent pipe is provided with an exhaust pipe, and the exhaust pipe is arranged at one end far away from the smell removing pipe.
Through adopting above-mentioned technical scheme, the blast pipe setting is kept away from the one end that removes the flavor pipe at the breather pipe, will detach the gas outgoing after peculiar smell and cooling through setting up the blast pipe.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the first-stage filter box arranged in the device can separate the waste gas from particles in the waste gas, the waste gas can be cooled to a certain degree in the separation process, and the spraying medium in the second-stage filter box is weak acid or weak acid liquid, so that alkaline gas or acidic gas in the waste gas can be neutralized, and the waste gas can be treated; the cooling device is communicated with the second-stage filter box, and is used for cooling the waste gas and discharging the cooled gas, so that the pollution of the waste gas to the air can be reduced;
2. the exhaust gas upset in the breather pipe can be driven in the setting of bull stick, propeller blade and second motor in the cooling device, increases the area of contact of exhaust gas and condenser pipe for exhaust gas can be the cooling as fast as possible, has improved the work efficiency of cooling off-gas.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.
Fig. 2 is a schematic view of the internal structure of the first stage filter box in the embodiment of the present application.
Fig. 3 is a schematic structural diagram of a cooling device in an embodiment of the present application.
Fig. 4 is a schematic view of the internal structure of the breather pipe in the embodiment of the present application.
Description of reference numerals: 1. a first stage filter box; 11. a box body; 12. a feed pipe; 13. a discharge pipe; 21. a rotating shaft; 22. a connecting pipe; 221. a hose; 23. an atomizing nozzle; 24. a servo motor; 31. a frame; 32. filtering cotton; 41. a housing; 42. a breather pipe; 43. a condenser tube; 51. a rotating rod; 52. a helical stirring paddle; 53. a second motor; 61. a deodorizing pipe; 62. and (4) exhausting the gas.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a waste gas treatment device for processing a traditional Chinese medicine plaster. Referring to fig. 1, an exhaust gas treatment device for processing a traditional Chinese medicine plaster comprises a primary filter tank 1, a secondary filter tank and a cooling device. Waste gas enters into first order filter box 1 from plaster production reation kettle, and first order filter box 1's effect is separated waste gas and the granule in the waste gas, also can play the effect of preliminary cooling to waste gas simultaneously. The second grade rose box links to each other with first grade rose box 1, and waste gas enters into the second grade rose box, and the second grade rose box can carry out the secondary to the granule in waste gas and the waste gas, also can carry out certain processing to waste gas. The cooling device is connected at the outlet end of the second-stage filter box, waste gas is cooled, and the treated gas can be discharged in the air, so that the pollution to the environment is reduced.
Referring to fig. 2, the first stage filtration tank 1 includes a tank body 11, a feed pipe 12, a discharge pipe 13, and a shower device. The box body 11 is arranged in a square structure, and the feeding pipe 12 is arranged on one side wall close to the bottom surface and used for receiving waste gas. The discharging pipe 13 is arranged on a side wall of the box body 11 opposite to the feeding pipe 12, and the discharging pipe 13 is arranged at a position above the feeding pipe 12 and used for discharging the waste gas of the first-stage filtration. The exhaust gas has a relatively high temperature and flows upward as it enters the housing 11 from the feed pipe 12. A spray device is arranged in the middle between the feed pipe 12 and the discharge pipe 13 for separating the exhaust gas from the particles in the exhaust gas.
The spraying device comprises a rotating shaft 21 which is rotatably arranged on two opposite inner walls of the box body 11, a connecting pipe 22 is arranged outside the rotating shaft 21, the connecting pipe 22 is sleeved outside the rotating shaft 21, and the connecting mode with the rotating shaft 21 can be fixed connection or detachable connection. The connecting tube 22 is closed at both ends and forms an annular chamber with the rotating shaft 21 for containing a medium. A hose 221 is connected to the closed end of the connection pipe 22, and one end of the hose 221 extends out of the case 11 to be connected to a medium source. In this embodiment, the medium in the first stage filter tank 1 is water. A plurality of atomizing nozzles 23 are arranged on the connecting pipe 22 at intervals, a plurality of atomizing nozzles 23 are arranged along the length direction of the connecting pipe 22, and the opening direction of each atomizing nozzle 23 is different, but the nozzles spray downwards or obliquely downwards.
After the hose 221 is connected with a water source, water is sprayed to waste gas through the atomizing nozzle 23 from the chamber, particles in the waste gas can be blown down, the effect of primary separation is achieved, and meanwhile, the effect of partial temperature reduction can also be achieved. The blown particles fall downward, and the exhaust gas is discharged from a discharge pipe 13 above the spray device.
In order to enable the liquid sprayed by the atomizing nozzles 23 to contact with the waste gas in the largest area as possible, one end of the rotating shaft 21 is connected with a servo motor 24, the servo motor 24 can enable the rotating shaft 21 to swing within a certain angle range, the rotating shaft 21 does not need to rotate, only swings at a certain angle, the atomizing nozzles 23 spray downwards or obliquely downwards, the contact area of water and the waste gas is increased, and particles are separated from the waste gas more thoroughly.
In order to clean the particles in the first stage filter tank 1, a filter cotton layer is arranged in the tank body 11 at a position below the feeding pipe 12. The filter cotton layer comprises a frame 31 arranged on the inner wall of the box body 11 and filter cotton 32 fixedly connected to the frame 31. The frame 31 is used for fixing the filter cotton 32, and the filter cotton layer can adsorb and collect the particles sprayed in the atomizing nozzle 23. Meanwhile, in order to facilitate the replacement of the filter cotton layer, the frame 31 is detachably connected in the box body 11. An opening is provided in a side wall of the case 11, and the frame 31 can be taken out from the opening and replaced.
The second-stage filter box is the same as the first-stage filter box in structure, and the difference is that: the spraying device has different spraying media, and the media in the second-stage filter box can be weak acid, weak base or ethanol solution. The waste gas contains harmful acid and alkali gases, and the acid or alkali gases can be neutralized or dissolved and desorbed by using a proper amount of weak base solution or weak acid solution, and the harmful gases can be dissolved in ethanol for absorption treatment. The number of the second-stage filter boxes can be selected as required, the number of the second-stage filter boxes can be three, and three sprayed media are respectively weak acid solution, weak base solution and ethanol solution, so that waste is absorbed more thoroughly.
Referring to fig. 1 and 3, a cooling device is provided at an outlet end of the second stage filtering tank in order to cool the gas having a relatively high temperature. The cooling device includes a housing 41, a vent pipe 42, and a condensation pipe 43. A vent pipe 42 is provided in the housing 41, and the vent pipe 42 is provided horizontally, with one end thereof being connected to an end portion of a discharge pipe of the second-stage filtration tank. The condensation duct 43 extends spirally along the length direction of the vent duct 42. Both ends of the condensation pipe 43 extend outward from the housing 41, and one end is connected to a water source and the other end flows out. The water cools the gas in the vent pipe 42 while flowing through the condensation pipe 43.
Referring to fig. 3 and 4, in order to improve the efficiency of cooling the exhaust gas and reduce the time taken for cooling, a rotating rod 51 is arranged in the vent pipe 42, the rotating rod 51 is arranged along the length direction of the vent pipe 42, one end of the rotating rod 51 extends outwards from the housing 41, and the extending end is connected with a second motor 53, the second motor 53 is used for driving the rotating rod 51 to rotate, a spiral stirring paddle 52 is arranged on the rotating rod 51, the rotating rod 51 rotates to drive the spiral stirring paddle 52 to rotate, so that the exhaust gas in the vent pipe 42 is stirred, the contact area between the exhaust gas and the condenser pipe 43 is increased, the temperature reduction time of the exhaust gas is shortened, and the cooling efficiency of the exhaust gas is improved.
In order to eliminate odor in the exhaust gas, a odor elimination mechanism including an odor elimination tube 61 and activated carbon is further provided on the breather tube 42. The odor removal pipe 61 is arranged between the second-stage filter tank and the vent pipe 42, and the connection mode is flange detachable connection. Remove the flavor pipe 61 and be equipped with the active carbon in, remove the both ends of flavor pipe 61 and be provided with the active carbon filter pulp and carry out fender position to the active carbon, keep off the active carbon in removing flavor pipe 61, adsorb the smell in the waste gas, get rid of the smell in the waste gas.
In order to discharge the exhaust gas in the ventilation pipe 42 to the outside from the ventilation pipe 42, an exhaust pipe 62 is provided at an end of the ventilation pipe 42 away from the odor removal pipe 61, the exhaust pipe 62 communicates with the ventilation pipe 42, and one end of the exhaust pipe extends from the housing 41. An exhaust fan is also provided at the exhaust pipe 62 to draw gas along the length of the vent pipe 42 and ultimately out through the exhaust pipe 62.
The implementation principle of the waste gas treatment device for processing the traditional Chinese medicine plaster is as follows:
waste gas enters into the first-stage filter box under the spraying effect of the spraying device, can separate the particles in waste gas and waste gas, and the in-process of separation also can carry out the cooling treatment of certain degree to waste gas. The waste gas enters a second-stage filter tank from a discharge pipe 13, and a spraying medium in the second-stage filter tank is weak acid or weak acid liquid, so that alkaline gas or acidic gas in the waste gas can be neutralized, and the waste gas is treated; cooling device and second level rose box intercommunication start second motor 53, drive bull stick 51 and spiral stirring rake 52 and rotate, increase the area of contact of waste gas and condenser pipe, make its very fast cooling, and gas after the cooling is outwards discharged in blast pipe 62.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a waste gas treatment device for processing of traditional chinese medicine plaster which characterized in that: comprises a first-stage filter box (1), a second-stage filter box connected with the first-stage filter box (1) and a cooling device arranged at the outlet end of the second-stage filter box;
the first-stage filter box (1) comprises a box body (11), a feed pipe (12) and a discharge pipe (13) which are arranged on the box body (11), and a spraying device arranged between the feed pipe (12) and the discharge pipe (13);
the spraying device is used for separating the waste gas and the particles.
2. The exhaust gas treatment device for processing of a traditional Chinese medicine plaster according to claim 1, wherein: the spraying device comprises a rotating shaft (21) rotatably connected to two inner walls of the box body (11), a connecting pipe (22) sleeved outside the rotating shaft (21) and atomizing nozzles (23) arranged on the connecting pipe (22) at intervals;
one end of the connecting pipe (22) is provided with a hose (221), and the hose (221) extends out of the box body (11) and is connected to a water source.
3. The exhaust gas treatment device for processing of a traditional Chinese medicine plaster according to claim 2, wherein: one end of the rotating shaft (21) is provided with a servo motor (24).
4. The exhaust gas treatment device for processing of a traditional Chinese medicine plaster according to claim 1, wherein: the filter cotton layer is arranged below the feeding pipe (12);
the filtering cotton layer comprises a frame (31) arranged in the box body (11) and filtering cotton (32) arranged in the frame (31).
5. The exhaust treatment device for processing of traditional Chinese medicine plaster according to claim 4, wherein: the second-stage filter tank and the first-stage filter tank are identical in structure, and the spraying device is used for spraying weak acid or weak base solution.
6. The exhaust gas treatment device for processing of a traditional Chinese medicine plaster according to claim 1, wherein: the cooling device comprises a shell (41), a vent pipe (42) arranged in the shell (41) and a condensation pipe (43) arranged outside the vent pipe (42);
the vent pipe (42) is connected with the outlet end of the second-stage filter box, and the condensation pipe (43) extends spirally along the length direction of the vent pipe (42).
7. The waste gas treatment device for processing of traditional Chinese medicine plaster as claimed in claim 6, wherein: be provided with bull stick (51) in breather pipe (42), the one end of bull stick (51) is outwards stretched out in casing (41), be provided with spiral stirring rake (52) on bull stick (51), the one end of bull stick (51) is provided with second motor (53), drives bull stick (51) rotate and are used for making the area of contact increase of waste gas and condenser pipe (43).
8. The exhaust treatment device for processing of traditional Chinese medicine plaster according to claim 7, wherein: also comprises a smell removing mechanism arranged on the vent pipe (42);
the odor removal mechanism comprises an odor removal pipe (61) which is connected with the vent pipe (42) in a flange-detachable mode and activated carbon arranged in the odor removal pipe (61), and the odor removal mechanism is arranged at a position close to the second-stage filter tank.
9. The exhaust treatment device for processing of traditional Chinese medicine plaster according to claim 8, wherein: an exhaust pipe (62) is arranged on the vent pipe (42), and the exhaust pipe (62) is arranged at one end far away from the smell removing pipe (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010807492.0A CN111804095A (en) | 2020-08-12 | 2020-08-12 | A exhaust treatment device for processing of traditional chinese medicine plaster |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010807492.0A CN111804095A (en) | 2020-08-12 | 2020-08-12 | A exhaust treatment device for processing of traditional chinese medicine plaster |
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| CN111804095A true CN111804095A (en) | 2020-10-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445425A (en) * | 2022-10-17 | 2022-12-09 | 山东省济南生态环境监测中心 | Industrial waste gas treatment equipment |
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