CN117427489A

CN117427489A - Waste gas treatment system in water-based paint production process

Info

Publication number: CN117427489A
Application number: CN202311681554.8A
Authority: CN
Inventors: 刘斌; 饶先权; 朱磊; 周维敏; 丁波
Original assignee: Hanshou Xiaohan New Material Technology Co ltd
Current assignee: Hanshou Xiaohan New Material Technology Co ltd
Priority date: 2023-12-08
Filing date: 2023-12-08
Publication date: 2024-01-23

Abstract

The invention discloses an exhaust gas treatment system in the production process of water-based paint, wherein a dust removing part is used for removing dust from exhaust gas and independently introducing air extracted by an air supply part into a heat exchange part for preheating; the thermal catalytic part is used for carrying out catalytic treatment on the waste gas, the treated waste gas is led into the heat exchange part, the waste gas serving as a heating medium is conveyed to the adsorption part for adsorption treatment and is discharged after being subjected to heat exchange and temperature reduction, and the adsorption part can realize automatic thermal desorption; the preheated air passing through the heat exchange part is introduced into the mixed heating part for further heating, then introduced into the adsorption part for automatic thermal desorption, and the air after thermal desorption and the preheated waste gas are introduced into the mixed heating part for mixed heating, and then introduced into the thermal catalysis part for thermal catalysis treatment. The invention can efficiently treat waste gas, protect environment and human health, improve integration level and convenience, has high environmental protection, and has high practical value and wide application prospect.

Description

Waste gas treatment system in water-based paint production process

Technical Field

The invention relates to the technical field of waste gas treatment, in particular to a waste gas treatment system in a water-based paint production process.

Background

A large amount of exhaust gas is generated in the production process of the water-based paint, wherein the exhaust gas mainly comprises Volatile Organic Compounds (VOCs), dust and the like. If the waste gases are directly discharged into the atmosphere, the waste gases not only pollute the environment, but also have serious influence on the health of human bodies. Therefore, the effective treatment of these exhaust gases to reduce their environmental impact has become an important issue to be addressed by the paint production industry.

In general, methods for treating these exhaust gases include physical methods, chemical methods, biological methods, and the like. Wherein, the physical method is mainly to treat the waste gas by adsorption, condensation, filtration and other modes; the chemical method mainly converts harmful substances in the waste gas into harmless or low-toxicity substances through oxidation, reduction, hydrolysis, neutralization and other reactions; the biological principle is to convert harmful substances in the exhaust gas into harmless substances by using the metabolism of microorganisms. However, these methods have respective problems and limitations in treating exhaust gas. For example, physical methods cannot thoroughly decompose harmful substances in exhaust gas during the process of treating the exhaust gas, but separate the harmful substances from the exhaust gas, but the separated harmful substances also need to be treated later; in the process of treating waste gas by the chemical method, a large amount of chemical agents are needed, so that the treatment cost is increased, and a large amount of secondary pollution is generated; in the process of treating waste gas, the biological method is greatly influenced by environmental factors such as temperature, humidity and the like, and the treatment efficiency is lower.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an exhaust gas treatment system in the production process of the water-based paint, which can efficiently treat the exhaust gas in the production process of the water-based paint, protect the environment and the health of human bodies, improve the integration level and the convenience, and has high practical value and wide application prospect.

The technical scheme adopted by the invention for achieving the purpose is as follows: an exhaust gas treatment system in the production process of water-based paint comprises a dust removing part, an air supply part, a thermal catalysis part, an adsorption part, a mixed heating part and a heat exchange part which are kept in matched combination.

The dust removal part is used for extracting waste gas and removing dust, the air supply part is used for extracting clean natural air, and the waste gas after dust removal and the natural air are led into the heat exchange part in an independent mode for preheating.

The waste gas after being treated by the thermal catalytic part is led into the heat exchange part and serves as a heating medium to preheat the waste gas and natural air which are independently led into the heat exchange part, the waste gas serving as the heating medium is conveyed to the adsorption part for adsorption treatment and is discharged outside after being subjected to heat exchange and temperature reduction, and the adsorption part can realize automatic thermal desorption.

Natural air preheated by the heat exchange part is fed into the mixing heating part for further heating, then fed into the adsorption part for automatic thermal desorption, natural air subjected to automatic thermal desorption and preheated waste gas are jointly fed into the mixing heating part for mixed heating, and the mixture after mixed heating is fed into the thermal catalysis part for thermal catalysis treatment.

In some implementations, in order to ensure stable installation of the dust removing part, the air supplying part, the thermocatalysis part, the adsorption part, the hybrid heating part and the heat exchanging part, which are involved in the technical scheme, the integration level of the dust removing part, the air supplying part, the thermocatalysis part, the adsorption part, the hybrid heating part and the heat exchanging part is improved, and the convenience for application and transportation of the dust removing part, the air supplying part, the thermocatalysis part, the adsorption part, the hybrid heating part and the heat exchanging part is improved.

The assembly machine also comprises an assembly machine shell, wherein a plurality of assembly areas are arranged in the assembly machine shell, each assembly area is provided with an assembly through hole, each group of assembly through holes is provided with a carriage door in a matched way, the dust removing part, the air supply part, the thermal catalysis part, the adsorption part, the mixed heating part and the heat exchange part are arranged in the corresponding assembly areas in a matching way.

In some implementations, in order to ensure that the heat exchange part can be effectively connected with the dust removal part, the air supply part, the mixed heat exchange part, the thermal catalysis part and the adsorption part, the full heat exchange and the charge transmission of each part of gas are realized, and the effective discharge of condensed liquid water is ensured, the following technical scheme is provided.

The heat exchange part comprises a heat exchange box and waste gas heat exchange pipes and air heat exchange pipes assembled in the heat exchange box, wherein a plurality of layers of partition boards are fixedly connected in the heat exchange box in a staggered mode, the waste gas heat exchange pipes and the air heat exchange pipes are arranged at the gaps of the partition boards in a zigzag mode, the waste gas heat exchange pipes and the air heat exchange pipes comprise a plurality of groups which are arranged side by side, the bottom interfaces of the waste gas heat exchange pipes and the air heat exchange pipes are respectively connected to a waste gas inlet pipe and an air inlet pipe, the waste gas inlet pipe and the air inlet pipe are respectively connected with a dust removing part and an air supply part, the top interfaces of the waste gas heat exchange pipes and the air heat exchange pipes are respectively connected to a waste gas outlet pipe and an air outlet pipe, and the waste gas outlet pipe and the air outlet pipe are respectively connected to the mixed heating part.

The heat exchange box is characterized in that an air supply cover is arranged at the top of the heat exchange box, the air supply cover is connected with the thermal catalysis part, a heat medium calandria and a water collecting tank arranged at the bottom of the heat medium calandria are further arranged at the bottom of the heat exchange box, the heat medium calandria is connected with the adsorption part, and a drain pipe is arranged at the bottom of the water collecting tank.

In some implementations, in order to ensure that the dust removing part can effectively extract waste gas in the production process and carry out dust removing treatment, and simultaneously ensure that removed dust is uniformly collected and treated, the waste gas after dust removal can be effectively conveyed to the waste gas inlet pipe of the heat exchange part, and the following technical scheme is provided.

The dust removing part comprises an air inlet fan, an air outlet fan, dust transmission components and a plurality of groups of cyclone dust collectors which are arranged side by side, wherein the air inlet ends of the cyclone dust collectors are all communicated to an air inlet manifold, the air inlet manifold is provided with the air inlet fan, the air outlet ends of the cyclone dust collectors are all communicated to an air outlet manifold, the air outlet manifold is connected with the waste gas inlet pipe through a first conveying pipe, the air outlet manifold is provided with the air outlet fan, and the dust outlet ends of the cyclone dust collectors are communicated to the dust transmission components.

The dust conveying assembly comprises a conveying pipeline, a spiral conveying blade and a driving motor, wherein the conveying pipeline is arranged at the bottom of the cyclone dust collector and is communicated with the dust discharging end, the spiral conveying blade is rotatably arranged in the conveying pipeline, and the driving motor is arranged at the outer side of the conveying pipeline and is in power connection with the spiral conveying blade.

In some implementations, in order to ensure that the air supply part can effectively extract clean air in the external environment and stably convey the clean air to the air inlet pipe of the heat exchange part, the following technical scheme is provided.

The air supply part comprises an air supply fan and an air supply pipe, the air supply fan is assembled on the air supply pipe, and the air supply pipe is connected with the air inlet pipe through a second conveying pipe.

In some implementations, in order to ensure that the mixed heat exchange part can effectively receive preheated waste gas and air transmitted from the waste gas outlet pipe and the air coarse pipe in the heat exchange part, the mixed heat exchange part is ensured to realize gas transmission with the adsorption part and the catalytic part, and the mixed heat exchange part is ensured to realize mixing and heating operations on corresponding gases, the following technical scheme is provided.

The mixing heating part comprises a heating tank, an upper heating zone and a lower heating zone which are kept sealed are arranged in the heating tank, the mixing heating part further comprises an upper heating pipe, a lower heating pipe and a stirring assembly which are assembled in the upper heating zone and the lower heating zone respectively, the stirring assembly comprises a stirring shaft which is rotatably installed in the upper heating zone and stirring blades which are fixedly connected onto the stirring shaft, and the stirring shaft is in power connection with a driving assembly.

The lower heating zone is provided with a first air inlet interface and a first air outlet interface which are arranged in a relative mode, the first air inlet interface is connected with the air outlet pipe through a third conveying pipe, and the first air outlet interface is connected with the adsorption part.

The upper heating zone bottom is equipped with the interface that admits air No. two, no. three of keeping relative arrangement admit air, upper heating zone top is equipped with the interface that admits air No. two, no. two admit air the interface through No. four conveyer pipes with the waste gas exit tube links to each other, no. three admit air the interface with adsorption part links to each other, no. two admit air the interface with thermal catalysis part links to each other.

In some implementations, in order to ensure that the thermal catalytic part can effectively receive the waste gas subjected to mixed heating by the mixed heating part to perform thermal catalytic oxidation reaction, the gas subjected to catalytic oxidation treatment can be effectively introduced into the adsorption part to perform adsorption treatment so as to further remove volatile organic compounds in the gas, and meanwhile, the catalytic part is conveniently replaced by a catalyst filler.

The thermal catalysis portion includes the catalysis jar and assembles in the catalysis jar and keep from top to bottom the caping dish, the saucer, the gas distribution dish of distributing, the top of catalysis jar is equipped with the catalysis exit tube, the catalysis exit tube pass through No. five conveyer pipes with the air supply cover of heat transfer portion links to each other, the region between caping dish and the saucer constitutes the packing district, be equipped with material loading pipe, unloading pipe on the lateral wall of catalysis jar, the material loading pipe is connected to the caping dish lower surface, the material loading pipe is connected to the saucer bottom, the intercommunication has the catalysis admission pipe that extends to the catalysis jar outside on the gas distribution dish, the catalysis admission pipe pass through No. six conveyer pipes with No. two interfaces of giving vent to anger meet, and be equipped with the booster pump on the No. six conveyer pipes.

In some implementations, in order to ensure that the adsorption part can effectively receive heated air, exchange heat and cool down and perform thermal desorption operation and adsorption operation on waste gas after catalytic treatment respectively, the adsorption part can be ensured to input the gas after thermal desorption into a third air inlet interface in the mixed heating part, and the adsorption part can effectively discharge the gas after adsorption treatment.

The adsorption part comprises a pressing disc, an air supply disc, an adsorption disc and an assembly cylinder which are in sealing butt joint, wherein two groups of adsorption discs which are in symmetrical arrangement are rotatably arranged at the upper port and the lower port of the assembly cylinder, the side wall of the assembly cylinder is provided with adsorption calandria and desorption calandria which are in relative distribution, the adsorption calandria is communicated with an outer calandria, and the desorption calandria is connected with a third air inlet interface through a seventh conveying pipe.

The driving assembly is in power connection with two groups of adsorption discs, the outer side surface of the adsorption discs is provided with an annular charging area, the air supply discs are fixedly installed at two ends of the assembly cylinder and are kept in fit with the adsorption discs on one side, two groups of arc air supply areas which keep central symmetry are arranged on the inner side surface of the air supply discs, the two groups of arc air supply areas are respectively provided with an exhaust gas spray pipe and an air spray pipe, the exhaust gas spray pipe and the air spray pipe are respectively distributed towards one side of the adsorption calandria and one side of the desorption calandria, the exhaust gas spray pipe is connected with the heat medium calandria through a No. eight conveying pipe, a No. one pressurizing fan is installed on the No. eight conveying pipe, the air spray pipe is connected with a No. one air outlet interface through a No. nine conveying pipe, a No. two pressurizing fan is installed on the No. nine conveying pipe, and the outer side surface of the air supply discs is fixedly installed with a pressure plate.

In some implementations, in order to ensure that the driving assembly can drive the stirring assembly and the adsorption disc to operate effectively at the same time, the following technical scheme is provided.

The inner side surfaces of the two groups of adsorption discs are fixedly connected with reduction bevel gears, and the stirring shaft is fixedly connected with a transmission bevel gear arranged on the outer side of the heating pipe.

The driving assembly comprises a gear motor, a first driving shaft, a second driving shaft and a driving sprocket, wherein the first driving shaft is fixedly connected with an output shaft of the gear motor, a first driving bevel gear which is meshed with the driving bevel gear is fixedly connected to the first driving shaft, the second driving shaft is rotatably installed in the assembly cylinder, a second driving bevel gear which is meshed with two groups of reduction bevel gears is fixedly connected to the second driving shaft, the driving sprocket is fixedly connected to the first driving shaft and the second driving shaft, and the two groups of driving sprockets realize continuous transmission through chains.

The invention has the beneficial effects that:

1. and (3) efficiently treating waste gas: the application adopts the treatment scheme that thermal catalytic oxidation and active adsorption combine together, and catalytic oxidation, adsorption treatment cooperate with heat transfer portion, mixed heating portion, effectively handle the waste gas in the water based paint production process through the mode of doublestage treatment, reduced environmental pollution. And by carrying out automatic thermal desorption treatment on the adsorbent, the adsorbent continuously maintains the efficient adsorption function, and the waste gas treatment efficiency is improved.

2. Heat loss is reduced: in the waste gas treatment flow, waste heat utilization can be carried out on waste gas through thermal catalytic oxidation through reasonable design to the heat is supplied to the adsorption part in the second grade heating decline heat of mixed heating part, can realize the automatic thermal desorption of adsorption part, guarantees the continuous high-efficient use of adsorbent packing, has further improved treatment effeciency.

3. Protecting environment and human health: through efficient exhaust treatment, the exhaust gas generated in the production process of the water-based paint can be reduced to meet the emission standard, and the safety and the cleanness of the air environment in the production process are ensured, so that the environment and the human health are protected.

4. Improve integrated level and convenience: this application is through being equipped with a plurality of assembly areas in the assembly casing for each part can be in the stable installation of assembly casing, has improved the space utilization of assembly casing, has improved exhaust treatment system's integrated level, makes its application and transportation more convenient.

In summary, the method and the device can efficiently treat waste gas, protect environment and human health, improve integration level and convenience, have high environmental friendliness, and have high practical value and wide application prospect.

Drawings

FIG. 1 is a schematic diagram of the main flow in the operation process of the invention;

FIG. 2 is a schematic view of the appearance structure of the present invention;

FIG. 3 is a schematic view of an external structure according to another aspect of the present invention;

FIG. 4 is a schematic view of the present invention with the assembled housing removed;

FIG. 5 is a schematic view of the structure of FIG. 4 from another view;

FIG. 6 is a schematic view of the dust removing part;

FIG. 7 is a schematic view of a cyclone dust collector;

FIG. 8 is a schematic view of the dust transport assembly in a disassembled state;

FIG. 9 is a schematic view of the structure of the air supply section, the heat exchange section and the connected pipes;

FIG. 10 is a schematic view of the structure of FIG. 9 from another perspective;

FIG. 11 is a schematic view of the internal structure of the heat exchange box;

FIG. 12 is a schematic view of the structure of the exhaust heat exchange tube and the air heat exchange tube after disassembly;

FIG. 13 is a schematic view of the structure of the thermocatalytic section and the connected pipes;

FIG. 14 is a schematic view showing the internal structure of the thermocatalyst part;

FIG. 15 is a schematic view of the structure of the hybrid heating section and the connected pipes;

FIG. 16 is a schematic view showing the internal structure of the hybrid heating section;

FIG. 17 is a schematic view of the structure of the adsorption section and the connected pipes;

fig. 18 is a schematic view of the structure of the adsorbing portion in a cut-away and disassembled state;

FIG. 19 is a detailed schematic view of the gas supply tray and the adsorption tray in the adsorption section;

FIG. 20 is a schematic diagram of the dynamic connection of the drive assembly to the stirring assembly and the adsorption disk.

In the figure:

the dust removing device comprises a dust removing part, an 11 air inlet fan, a 12 air outlet fan, a 13 dust conveying component, a 131 conveying pipeline, a 132 spiral conveying blade, a 133 driving motor, a 14 cyclone dust remover, a 141 air inlet end, a 142 air outlet end, a 143 dust outlet end, a 144 upper layer positioning disk, a 145 lower layer positioning disk, a 15 air inlet main pipe, a 16 air outlet main pipe and a 161 first conveying pipe;

2 air supply part, 21 air supply fan, 22 air supply pipe, 221 second conveying pipe;

the device comprises a thermal catalytic part 3, a catalytic tank 31, a catalytic outlet pipe 311, a conveying pipe 3111 No. five, a feeding pipe 312, a feeding valve 3121, a discharging pipe 313, a discharging valve 3131, a cover plate 32, a pad plate 33, an air distribution plate 34, a catalytic inlet pipe 341, a conveying pipe 3411 No. six, a 3412 booster pump and a filling area 35;

4 adsorption part, 41 pressure plate, 42 air supply plate, 421 arc air supply area, 422 exhaust gas spray pipe, 4221 No. eight conveying pipe, 4222 No. one pressurizing fan, 423 air spray pipe, 4231 No. nine conveying pipe, 4232 No. two pressurizing fan, 43 adsorption plate, 431 annular charging area, 432 interlayer, 433 speed reducing bevel gear, 44 assembling cylinder, 441 adsorption discharge pipe, 4411 outer discharge pipe, 442 desorption discharge pipe and 4421 No. seven conveying pipe;

The mixing heating part 5, the heating tank 51, the upper heating area 52, the inlet port 521, the delivery pipe 5211, the inlet port 522, the outlet port 523, the lower heating area 53, the inlet port 531, the delivery pipe 5311, the outlet port 532, the upper heating pipe 54, the lower heating pipe 55, the stirring assembly 56, the stirring shaft 561, the transmission bevel gear 5611 and the stirring blade 562;

the heat exchange part 6, the heat exchange box 61, the waste gas heat exchange tube 62, the waste gas inlet tube 621, the waste gas outlet tube 622, the air heat exchange tube 63, the air inlet tube 631, the air outlet tube 632, the partition plate 64, the air supply cover 65, the heat medium discharge tube 66, the water collecting tank 67, the water discharge tube 68, the water discharge tube 681 and the connecting bar 69;

7, assembling a shell, 71 an assembling area, 72 an assembling port, 73 a carriage door, 74 a mounting frame, 75 supporting frames, 76 supporting feet and 77 supporting feet;

8 drive assembly, 81 gear motor, 82 drive shaft, 821 drive bevel gear, 83 drive shaft, 831 drive bevel gear, 84 drive sprocket, 841 chain.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

1-20, the principles of operation of the system and the implementation of the components involved in this application are described in detail in connection with the following embodiments.

Example 1

A waste gas treatment system in the production process of water-based paint comprises a dust removal part 1, an air supply part 2, a thermal catalysis part 3, an adsorption part 4, a mixing heating part 5 and a heat exchange part 6 which are kept in matched combination.

The dust removing part 1 is used for extracting waste gas and removing dust, the air supply part 2 is used for extracting clean natural air, and the dust-removed waste gas and the natural air are independently introduced into the heat exchanging part 6 for preheating.

The thermal catalysis part 3 is used for carrying out catalytic treatment on the waste gas, the waste gas treated by the thermal catalysis part 3 is led into the heat exchange part 6 and serves as a heating medium to preheat the waste gas and natural air which are independently led into the heat exchange part 6, and the waste gas serving as the heating medium is conveyed to the adsorption part 4 for adsorption treatment and is discharged after being subjected to heat exchange and temperature reduction, so that the adsorption part 4 can realize automatic thermal desorption.

Natural air preheated by the heat exchange part 6 is fed into the mixing heating part 5 for further heating, then fed into the adsorption part 4 for automatic thermal desorption, natural air subjected to automatic thermal desorption and preheated waste gas are jointly fed into the mixing heating part 5 for mixed heating, and the mixture after mixed heating is fed into the thermal catalysis part 3 for thermal catalysis treatment.

The dust that can produce in the batching to water based paint carries out preliminary treatment and grinding in-process, can produce volatile organic compounds in its production process, and dust, volatile organic compounds have the surrounding air to carry and form poisonous waste gas, utilizes the waste gas treatment system that this application provided can high-efficient treatment to handle the waste gas that produces in the water based paint production process.

In the process of treating the waste gas, the dust removing part 1 is used for extracting and carrying out dust removing treatment on toxic waste gas, the treated dust is collected and uniformly discharged, and the waste gas after dust removal is introduced into the heat exchange part 6.

The air supply part 2 extracts and introduces external clean natural air into the heat exchange part 6, two groups of independent pipelines are arranged in the heat exchange part 6, the exhaust gas and the natural air introduced into the heat exchange part 6 respectively run along the two groups of independent pipelines, the heat medium in the heat exchange part 6 is served as output gas of the thermal catalysis part 3 and fully exchanges heat with the exhaust gas and the natural air with lower temperature, so that the temperature of the exhaust gas and the natural air is increased to a certain temperature, and the temperature of the heat medium is reduced.

According to the operation example of the system, when the thermal catalytic part 3 is used for treating volatile organic compounds, transition metals such as iron, copper, manganese, cobalt and the like are selected as catalysts, when the exhaust gas is treated, the temperature of the exhaust gas needs to be kept between 250 and 450 ℃, and when the exhaust gas treated by the thermal catalytic part 3 is used as a heating medium and is conveyed to the heat exchange part 6, the temperature of the exhaust gas is still kept between 230 and 420 ℃ in consideration of heat loss in the conveying process.

The temperature of the exhaust gas and natural air extracted and treated by the dust removing part 1 and the air supplying part 2 is maintained at the ambient temperature (10-25 ℃), and after the heat exchange part 6 exchanges heat with the heat medium sufficiently, the temperature of each gas is maintained within the temperature range of 40-70 ℃.

Because the volatile organic compounds undergo catalytic oxidation reaction in the thermal catalytic part 3, the volatile organic compounds are heated and react with oxygen in the air under the action of the transition catalyst to generate carbon dioxide and water vapor, wherein most of the water vapor is condensed into liquid water for discharging after being fully heat-exchanged in the heat exchange part 6, and a small part of the water vapor, carbon dioxide and the volatile organic compounds which cannot catalyze the complete process enter the adsorption part 4 to be adsorbed.

The adsorbent in the adsorption part 4 adopts activated carbon or zeolite to adsorb the residual volatile organic compounds and water vapor, and the activated carbon is a common adsorbent, has good adsorption performance and large specific surface area, and can effectively adsorb various organic compounds. Zeolite is a natural silicate mineral with many micropores inside, and has strong adsorption capacity, and is commonly used for adsorbing various organic matters and gases. The gas subjected to heat exchange and temperature reduction by the heat exchange part 6 further has heat loss in the process of being transmitted to the adsorption part 4, the temperature is generally reduced to 30-55 ℃ when the gas enters the adsorption part 4 for treatment, and the main components of the waste gas subjected to adsorption treatment by the adsorption part 4 are air and various gases contained in the air, so that the emission standard is met and the gas is discharged.

In order to ensure that the adsorbent in the adsorption part 4 can keep the continuous and efficient adsorption function, the adsorption part 4 can realize automatic thermal desorption, the mixed heating part 5 comprises two independently operated treatment areas, one treatment area is used for receiving natural air preheated by the heat exchange part 6 and heating the natural air to 120-300 ℃ (usually about 150 ℃), then the natural air is conveyed to the adsorption part 4 to carry out thermal desorption treatment on the adsorbent, organic matters and moisture in the adsorbent are evaporated by using hot air and are carried by the hot air into the other treatment area of the mixed heating part 5, at the moment, the hot air is subjected to heat exchange and heat loss in the conveying process so that the temperature is reduced to about 80 ℃, and waste gas preheated by the heat exchange part 6 also enters the treatment area of the mixed heating part 5, is fully mixed with hot air carrying a small amount of volatile organic matters and moisture and heated to the range of 230-420 ℃, and then is conveyed to the thermal catalytic treatment part to carry out transitional catalytic oxidation reaction.

According to the circulating operation flow, waste gas (including dust and volatile organic compounds) generated in the production process of the water-based paint can be efficiently treated, so that the sufficient safety and cleanliness of the air environment in the production process are ensured, and the environmental protection in the production process of the water-based paint is improved.

Example 2

In order to ensure stable installation of the dust removing part 1, the air supplying part 2, the thermal catalysis part 3, the adsorption part 4, the mixed heating part 5 and the heat exchanging part 6, which are involved in the technical scheme, the integration level of the dust removing part is improved, and the application and transportation convenience of the dust removing part is improved, the following technical scheme is provided.

The dust collector further comprises an assembly shell 7, a plurality of assembly areas 71 are arranged in the assembly shell 7, assembly ports 72 are formed in each assembly area 71, a compartment door 73 is mounted at each assembly port 72 in a matched mode, and the dust collector 1, the air supply part 2, the thermal catalysis part 3, the adsorption part 4, the mixed heating part 5 and the heat exchange part 6 are mounted in the corresponding assembly areas 71 in a matched mode.

The arrangement of each assembly area 71 can ensure that the dust removing part 1, the air supplying part 2, the thermal catalysis part 3, the adsorption part 4, the mixed heating part 5 and the heat exchange part 6 in the exhaust gas treatment system are stably installed in the assembly shell 7, improve the space utilization rate of the assembly shell 7, improve the integration level of the exhaust gas treatment system, and facilitate unified operation and transportation of the exhaust gas treatment system.

Meanwhile, the assembly shell 7 can also effectively protect all parts assembled inside the assembly shell, and the stable operation of the assembly shell is prevented from being interfered by external environment.

Example 3

In order to ensure that the heat exchange part 6 can be effectively connected with the dust removal part 1, the air supply part 2, the mixed heat exchange part 6, the thermal catalysis part 3 and the adsorption part 4, the full heat exchange and the charge transmission of each part of gas are realized, and the effective discharge of condensed liquid water is ensured, the following technical scheme is provided.

The heat exchange part 6 comprises a heat exchange box 61, and an exhaust gas heat exchange tube 62 and an air heat exchange tube 63 assembled in the heat exchange box 61, wherein a plurality of layers of partition plates 64 are fixedly connected in the heat exchange box 61, the exhaust gas heat exchange tube 62 and the air heat exchange tube 63 are arranged in a zigzag manner at the gaps of the partition plates 64, the exhaust gas heat exchange tube 62 and the air heat exchange tube 63 comprise a plurality of groups which are arranged side by side, the bottom interfaces of the exhaust gas heat exchange tube 62 and the air heat exchange tube 63 are respectively connected to an exhaust gas inlet pipe 621 and an air inlet pipe 631, the exhaust gas inlet pipe 621 and the air inlet pipe 631 are respectively connected with the dust removing part 1 and the air supply part 2, the top interfaces of the exhaust gas heat exchange tube 62 and the air heat exchange tube 63 are respectively connected to an exhaust gas outlet pipe 622 and an air outlet pipe 632, and the exhaust gas outlet pipe 622 and the air outlet pipe 632 are respectively connected to the mixed heating part 5.

The top of the heat exchange box 61 is provided with an air supply cover 65, the air supply cover 65 is connected with the thermal catalysis part 3, the bottom of the heat exchange box 61 is also provided with a heat medium drain pipe 66 and a water collecting tank 67 arranged at the bottom of the heat medium drain pipe 66, the heat medium drain pipe 66 is connected with the adsorption part 4, and the bottom of the water collecting tank 67 is provided with a drain pipe 68.

The connecting strip 69 is arranged at the bottom of the heat exchange box 61, so that the heat exchange box 61 is conveniently and fixedly assembled into the assembly shell 7 through the connecting strip 69, and meanwhile, the drain pipe 68 can be ensured to be stably arranged at the bottom of the heat exchange box 61.

The heat exhaust gas outputted from the heat catalyst 3 can be inputted into the top of the heat exchange box 61 through the gas supply cover 65 and flows downward in sequence along the channel constituted by the partition plate 64, while the exhaust gas and air supplied from the dust removing part 1 and the gas supply part 2 can be supplied from the exhaust gas inlet pipe 621 and the air inlet pipe 631 to the respective exhaust gas heat exchange pipes 62 and 63, respectively, and flow in the heat exchange box 61 from above along the pipes, and after heat exchange with the hot gas inside thereof sufficiently, they are supplied from the exhaust gas outlet pipe 622 and the air outlet pipe 632 to the treatment area corresponding to the mixed heating part 5, respectively, while the temperature of the heat medium exhaust gas flowing to the bottom of the heat exchange box 61 is lowered and the water vapor therein is condensed and collected in the water collecting tank 67, and the heat medium exhaust gas whose temperature has been lowered is supplied from the heat medium exhaust pipe 66 to the adsorbing part 4 can be discharged through the water drain pipe 68 arranged outside the assembly case 7.

In order to avoid pollution to the environment caused by the exhaust of the heat medium exhaust gas from the drain pipe 68 in the heat exchange box 61, a drain valve 681 arranged outside the assembly housing 7 is further arranged on the drain pipe 68 to control the on-off state of the drain pipe 68, and normally, the drain valve 681 is in a closed state to effectively avoid leakage of the heat medium exhaust gas therefrom, and is opened to drain after collecting liquid water with a certain water level in the water collecting tank 67.

Example 4

In order to ensure that the dust removing part 1 can effectively extract the waste gas in the production process and carry out dust removing treatment, and simultaneously ensure that the removed dust is uniformly collected and treated, the waste gas after dust removal can be effectively conveyed to the waste gas inlet pipe 621 of the heat exchange part 6, and the following technical scheme is provided.

The dust removing part 1 comprises an air inlet fan 11, an air outlet fan 12, a dust conveying assembly 13 and a plurality of groups of cyclone dust collectors 14 which are arranged side by side, wherein the air inlet ends 141 of the cyclone dust collectors 14 of each group are all communicated to an air inlet main pipe 15, the air inlet main pipe 15 is provided with the air inlet fan 11, the air outlet ends 142 of the cyclone dust collectors 14 of each group are all communicated to an air outlet main pipe 16, the air outlet main pipe 16 is connected with an exhaust air inlet pipe 621 through a first conveying pipe 161, the air outlet main pipe 16 is provided with the air outlet fan 12, and the dust outlet ends 143 of the cyclone dust collectors 14 of each group are communicated to the dust conveying assembly 13.

The dust conveying assembly 13 comprises a conveying pipeline 131, a spiral conveying blade 132 and a driving motor 133, wherein the conveying pipeline 131 is arranged at the bottom of the cyclone dust collector 14 and is communicated with the dust discharging end 143, the spiral conveying blade 132 is rotatably arranged in the conveying pipeline 131, and the driving motor 133 is arranged outside the conveying pipeline 131 and is in power connection with the spiral conveying blade 132.

The upstream end of the air inlet main pipe 15 and the downstream end of the transmission pipeline 131 are uniformly arranged on the outer side of the assembly shell 7, so that the exhaust gas generated in the production process can be effectively collected, the collected dust is uniformly discharged,

the exhaust gas generated in the production process of the water-based paint is conveyed to each cyclone 14 along the air inlet main pipe 15 by the air inlet fan 11, dust in the exhaust gas enters the conveying pipeline 131 from the dust discharging end 143 at the bottom after being treated by each cyclone 14, and the exhaust gas after the dust removal treatment descends under the action of the air outlet fan 12 and is conveyed to the exhaust gas inlet pipe 621 of the heat exchange part 6 along the air outlet main pipe 16 and the first conveying pipe 161.

When the driving motor 133 drives the spiral conveying blade 132 to operate, the dust collected in the conveying pipeline 131 can be uniformly discharged, and the dust discharged outside the assembly shell 7 can be uniformly collected for other use.

In order to ensure that each cyclone 14 can be stably installed in the assembly housing 7, an upper positioning disc 144 and a lower positioning disc 145 are fixedly connected to the top and the bottom of the cyclone 14 respectively, and the upper positioning disc 144 and the lower positioning disc 145 can be effectively fixed in the assembly housing 7.

In order to ensure that the transmission pipeline 131 and the driving motor 133 can be stably installed in the assembly housing 7, the mounting frame 74 and the supporting frame 75 are fixedly assembled in the assembly housing 7, the transmission pipeline 131 is stably erected on the supporting frame 75, and the driving motor 133 is fixedly installed on the mounting frame 74.

In order to ensure that the air supply part 2 can effectively extract clean air in the external environment and stably convey the air to the air inlet pipe 631 of the heat exchange part 6, the following technical scheme is provided.

The air supply part 2 comprises an air supply fan 21 and an air supply pipe 22, wherein the air supply fan 21 is assembled on the air supply pipe 22, and the air supply pipe 22 is connected with an air inlet pipe 631 through a second conveying pipe 221.

When the air supply fan 21 works, clean air from outside can be pumped into the air supply pipe 22 and is conveyed to the air inlet pipe 631 of the heat exchange part 6 along the second conveying pipe 221, and the upstream end of the air supply pipe 22 is arranged on the outer side of the assembly shell 7 so as to effectively pump air in the outside environment.

Example 5

In order to ensure that the mixed heat exchange part 6 can effectively receive preheated waste gas and air transmitted from the waste gas outlet pipe 622 and the air coarse pipe in the heat exchange part 6, the mixed heat exchange part 6 can realize gas transmission with the adsorption part 4 and the catalytic part, and the mixed heat exchange part 6 can realize mixing and heating operations on corresponding gases, the following technical scheme is provided.

The hybrid heating part 5 comprises a heating tank 51, an upper heating zone 52 and a lower heating zone 53 which are kept sealed are arranged in the heating tank 51, the hybrid heating part 5 further comprises an upper heating tube 54, a lower heating tube 55 and a stirring assembly 56 which are assembled in the upper heating zone 52 and the lower heating zone 53 respectively, the stirring assembly 56 comprises a stirring shaft 561 rotatably installed in the upper heating zone 52 and stirring blades 562 fixedly connected to the stirring shaft 561, and the stirring shaft 561 is in power connection with the driving assembly 8.

The lower heating zone 53 is equipped with a first air inlet port 531 and a first air outlet port 532 which are arranged in opposition, the first air inlet port 531 being connected to the air outlet pipe 632 through a third delivery pipe 5311, the first air outlet port 532 being connected to the adsorption section 4.

The bottom of the upper heating zone 52 is provided with a second air inlet interface 521 and a third air inlet interface 522 which are arranged oppositely, the top of the upper heating zone 52 is provided with a second air outlet interface 523, the second air inlet interface 521 is connected with an exhaust gas outlet pipe 622 through a fourth conveying pipe 5211, the third air inlet interface 522 is connected with the adsorption part 4, and the second air outlet interface 523 is connected with the thermal catalytic part 3.

The upper heating zone 52 and the lower heating zone 53 are kept isolated and not affected each other, and the upper heating pipes 54 assembled in the upper heating zone 52 are distributed in an annular array and do not have motion interference with the stirring shafts 561 and the stirring blades 562 assembled therein. The lower heating pipe 55 fitted in the lower heating zone 53 is provided with a plurality of concentrically arranged screw pipe structures, each of which is held in contact.

The preheated air output from the air outlet pipe 632 of the heat exchange part 6 enters the lower heating zone 53 along the third conveying pipe 5311 and the first air inlet interface 531, is heated to a specific stability degree by the lower heating pipe 55, and is conveyed from the first air outlet interface 532 to the adsorption part 4 to complete the thermal desorption treatment.

Preheated waste gas output by a waste gas outlet pipe 622 in the heat exchange part 6 enters the upper heating zone 52 along a fourth conveying pipe 5211 and a second air inlet interface 521, air after deflection heat desorption of the adsorption part 4 enters the upper heating zone 52 along a third air inlet interface 522, the stirring assembly 56 is driven by the driving assembly 8 to operate, the air and the waste gas are fully mixed and heated to a specific temperature under the heating action of the upper heating pipe 54, and then the air and the waste gas are conveyed to the thermal catalytic part 3 along a second air outlet interface 523 for thermal catalytic oxidation reaction.

Example 6

In order to ensure that the thermal catalytic part 3 can effectively receive the waste gas subjected to the mixed heating of the mixed heating part 5 for thermal catalytic oxidation reaction, and ensure that the gas subjected to the catalytic oxidation treatment can be effectively introduced into the adsorption part 4 for adsorption treatment so as to further remove volatile organic compounds in the gas, and meanwhile, the catalytic part is convenient to replace a catalyst filler, the following technical scheme is provided.

The thermal catalysis part 3 comprises a catalysis tank 31, a cover plate 32, a cushion plate 33 and an air distribution plate 34 which are assembled in the catalysis tank 31 and keep the distribution from top to bottom, a catalysis outlet pipe 311 is assembled at the top of the catalysis tank 31, the catalysis outlet pipe 311 is connected with an air supply cover 65 of the heat exchange part 6 through a fifth conveying pipe, a packing area 35 is formed in an area between the cover plate 32 and the cushion plate 33, a feeding pipe 312 and a discharging pipe 313 are assembled on the side wall of the catalysis tank 31, the feeding pipe 312 is connected to the lower surface of the cover plate 32, the feeding pipe 312 is connected to the bottom of the cushion plate 33, a catalysis inlet pipe 341 extending to the outer side of the catalysis tank 31 is communicated with the air distribution plate 34, the catalysis inlet pipe 341 is connected with a second air outlet interface 523 through a sixth conveying pipe 3411, and a pressurizing pump 3412 is assembled on the sixth conveying pipe 3411.

The catalytic canister 31 is designed to be a multi-stage structure with a sealed butt joint so as to facilitate stable assembly of the cover plate 32, the cushion plate 33 and the air distribution plate 34 therein and maintenance and cleaning of the catalytic canister 31. The top of the catalytic tank 31 is shaped like a bundle opening so as to ensure that the waste gas which passes through the packing area 35 and is subjected to catalytic oxidation can be conveyed to the air supply cover 65 of the heat exchange part 6 through the catalytic outlet pipe 311, the cover plate 32 is shaped like a cone, so that the packing area 35 is ensured to be filled with catalyst as much as possible, the packing plate 33 is designed into a structure with a high middle part and a low outer edge, and catalyst packing therein can be conveniently discharged completely through the blanking pipe 313 at the bottom of the packing plate 33.

The additional feeding pipe 312 and the blanking pipe 313 are uniformly distributed on the outer side of the assembly housing 7, and in order to avoid leakage of exhaust gas and catalyst filler from the feeding pipe 312 and the blanking pipe 313 during operation of the catalytic tank 31, the feeding pipe 312 and the blanking pipe 313 are respectively provided with a feeding valve 3121 and a blanking valve 3131 which are arranged on the outer side of the assembly housing 7.

The pad plate 33 and the cover plate 32 are processed by adopting a screen plate, and under the condition that holes on the pad plate can ensure that catalyst filler is not leaked, the exhaust gas conveyed by the gas distribution plate 34 can be stably conveyed from bottom to top to pass through the filler zone 35, so that the thermocatalytic oxidation reaction is completed.

The exhaust gas after being fully mixed and heated by the upper heating zone 52 of the mixing and heating part 5 and the volatile organic compounds carried by the thermal desorption are conveyed to the gas distribution plate 34 along the sixth conveying pipe 3411 and the catalytic inlet pipe 341 under the action of the pressurizing pump 3412, and the conveyed exhaust gas is uniformly distributed by the gas distribution plate 34 and then subjected to thermal catalytic oxidation reaction by the packing zone 35.

When the catalyst packing is replaced, the catalyst packing in the packing region 35 is discharged by the discharging valve 3131 on the discharging pipe 313, and then a new catalyst packing is reloaded into the packing region 35 by opening the feeding valve 3121 on the feeding pipe 312.

The support legs 76 are further arranged at the bottom of the catalytic tank 31, so that the catalytic tank 31 can be effectively connected with the assembly shell 7, and meanwhile, the catalytic tank 31 can be lifted to ensure that the catalytic inlet pipes 341 are effectively distributed at the bottom of the catalytic tank 31.

Example 7

In order to ensure that the adsorption part 4 can effectively receive heated air, exchange heat and cool down and perform thermal desorption operation and adsorption operation on the waste gas after catalytic treatment respectively, the adsorption part 4 can input the gas after thermal desorption into the third air inlet interface 522 in the mixed heating part 5, and the adsorption part 4 can effectively discharge the gas after adsorption treatment, the following technical scheme is provided for the adsorption part.

The adsorption part 4 comprises a pressing disc 41, an air supply disc 42, an adsorption disc 43 and an assembly cylinder 44 which are in sealing butt joint, wherein two groups of adsorption discs 43 which are in symmetrical arrangement are rotatably arranged at the upper port and the lower port of the assembly cylinder 44, the side wall of the assembly cylinder 44 is provided with an adsorption discharge pipe 441 and a desorption discharge pipe 442 which are in opposite distribution, the adsorption discharge pipe 441 is communicated with an outer discharge pipe 4411, and the desorption discharge pipe 442 is connected with a third air inlet interface 522 through a seventh conveying pipe 4421.

The driving component 8 is in power connection with two groups of adsorption discs 43, an annular charging area 431 is arranged on the outer side face of each adsorption disc 43, an air supply disc 42 is fixedly installed at two ends of an assembly cylinder 44 and is kept in fit with the adsorption disc 43 on the corresponding side, two groups of arc air supply areas 421 which keep central symmetry are arranged on the inner side face of each air supply disc 42, an exhaust gas spray pipe 422 and an air spray pipe 423 are respectively arranged in the two groups of arc air supply areas 421 and face one side of each adsorption calandria 441 and one side of each desorption calandria 442, the exhaust gas spray pipe 422 is connected with a heating medium calandria 66 through an eighth conveying pipe 4221, an eighth conveying pipe 4221 is provided with a first pressurizing fan, the air spray pipe 423 is connected with an outlet port 532 through a ninth conveying pipe 4231, a second pressurizing fan 4232 is arranged on the ninth conveying pipe 4231, and a pressure plate 41 is fixedly installed on the outer side face of each air supply disc 42.

The components of the adsorption part 4 are assembled in a sectional assembly mode, so that the convenience of assembling and combining the components is improved, the components are convenient to maintain and clean, and the adsorbents added in the annular charging area 431 are convenient to replace.

The fixed combination of the assembly cylinder 44 and the air supply disc 42 can ensure that the adsorption disc 43 is stably installed in a relative rotation mode, the arc-shaped air supply area 421 arranged on the air supply disc 42 can be communicated with the annular packing area 35 at the corresponding position, the annular packing area 35 is formed by processing a screen plate, waste gas and air can be ensured to normally pass through while the leakage of adsorbent packing can be avoided, and the two groups of arc-shaped air supply areas 421 on the air supply disc 42 are respectively arranged opposite to the corresponding adsorption calandria 441 and desorption calandria 442 on the assembly cylinder 44.

The annular charging area 431 is provided with a plurality of partition layers 432 which are distributed uniformly, so that the flow of adsorbent filler in the area of each partition layer 432 can be avoided, in the process that the driving assembly 8 drives the two groups of adsorption plates 43 to operate, the adsorbent in each layer area of each section on the adsorption plates 43 can move between two groups of arc-shaped air supply areas 421 which are symmetrical in center, the arc-shaped air supply areas 421 connected with the exhaust gas spray pipes 422 can convey the exhaust gas which is sprayed out of the exhaust gas spray pipes 422 and subjected to heat exchange cooling and catalytic oxidation treatment to the adsorbent filler in the corresponding annular charging area 431, the adsorbent is discharged outwards along the adsorption discharge pipes 441 and the discharge pipes 4411 after the adsorbent adsorption treatment meets the discharge standard, the discharge pipes 4411 are exposed out of the top of the assembly shell 7, the exhaust gas treated and meeting the emission standard is effectively discharged, a small amount of volatile organic compounds and moisture carried in the exhaust gas can be adsorbed in the corresponding adsorbent filler, and when the adsorbent disc 43 rotates to drive the adsorbent filler with the adsorbed volatile organic compounds and moisture into the other arc-shaped air supply area 421, the hot air conveyed from the first air outlet interface 532 of the mixing heating part 5 in the arc-shaped air supply area 421 is blown to the adsorbent filler, and the adsorbed volatile organic compounds and moisture are evaporated and conveyed to the upper heating area 52 of the mixing heating part 5 along with the hot air through the desorption calandria 442, the seventh conveying pipe 4421 and the third air inlet interface 522.

Be equipped with the clearance big enough between two sets of arc air supply district 421, and two sets of adsorption disk 43 are in and are less than the operation under the drive of drive assembly 8, in the adsorbent packing through desorption treatment at the arc air supply district 421 transfer in one side of following adsorption disk 43 operation towards adsorption treatment, can realize the cooling through natural cooling's mode, can make the adsorbent packing temperature reduce avoid influencing its adsorptivity.

The first and second booster fans 4232 can ensure that the exhaust gas and air input into the adsorption portion 4 can efficiently pass through the annular packing region 35 to be adsorbed or desorbed.

The bottom of the lower pressure plate 41 is also fixed with a foot pad 77, which can ensure that the foot pad 77 is stably connected with the assembly shell 7.

In order to ensure that the driving assembly 8 can drive the stirring assembly 56 and the adsorption disc 43 to operate effectively at the same time, the following technical scheme is provided.

The inner sides of the two groups of adsorption discs 43 are fixedly connected with a reduction bevel gear 433, and a stirring shaft 561 is fixedly connected with a transmission bevel gear 5611 arranged outside the heating pipe.

The driving assembly 8 comprises a gear motor 81, a first driving shaft 82, a second driving shaft 83 and a transmission sprocket 84, wherein the first driving shaft 82 is fixedly connected with an output shaft of the gear motor 81, a first driving bevel gear 821 which is meshed with a transmission bevel gear 5611 is fixedly connected to the first driving shaft 82, the second driving shaft 83 is rotatably installed in the assembly cylinder 44, a second driving bevel gear 831 which is meshed with two groups of reduction bevel gears is fixedly connected to the second driving shaft 83, the transmission sprocket 84 is fixedly connected to the first driving shaft 82 and the second driving shaft 83, and the two groups of transmission sprockets 84 realize continuous transmission through a chain 841.

The assembly frame is also provided with a rotating seat, and the first driving shaft 82 is rotatably arranged in the rotating seat, so that the running stability of the first driving shaft 82 is ensured.

The first driving shaft 82 can be driven to stably operate when the gear motor 81 works, the second driving shaft 83 is driven to keep synchronous operation through the combination of the driving sprocket 84 and the chain 841, the stirring shaft 561 and the stirring blade 562 can be driven to stably operate through the combination of the first driving bevel gear 821 and the driving bevel gear 5611, and the two groups of adsorption discs 43 can be driven to slowly operate at a low speed through the second driving bevel gear 831 and the gear 433.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. An exhaust gas treatment system in the production process of water-based paint is characterized in that: comprises a dust removing part (1), an air supply part (2), a thermal catalysis part (3), an adsorption part (4), a mixed heating part (5) and a heat exchange part (6) which are kept in matched combination; the dust removing part (1) is used for extracting waste gas and removing dust, the air supply part (2) is used for extracting clean natural air, and the waste gas after dust removal and the natural air are led into the heat exchanging part (6) in an independent mode for preheating; the thermal catalysis part (3) is used for carrying out catalytic treatment on the waste gas, the waste gas treated by the thermal catalysis part (3) is led into the heat exchange part (6) and serves as a heating medium to preheat the waste gas and natural air which are independently led into the heat exchange part (6), the waste gas serving as the heating medium is conveyed to the adsorption part (4) for adsorption treatment and is discharged outside after being subjected to heat exchange and temperature reduction, and the adsorption part (4) can realize automatic thermal desorption; natural air preheated by the heat exchange part (6) is led into the mixed heating part (5) for further heating, then is led into the adsorption part (4) for automatic thermal desorption, natural air subjected to automatic thermal desorption and preheated waste gas are led into the mixed heating part (5) together for mixed heating, and the mixture after mixed heating is led into the thermal catalysis part (3) for thermal catalysis treatment.

2. An aqueous coating process exhaust treatment system according to claim 1, wherein: still including assembly casing (7), be equipped with a plurality of assembly district (71) in assembly casing (7), all offered on each assembly district (71) and assembled opening (72), each group assembly opening (72) department is supporting installs railway carriage or compartment door (73), dust removal portion (1), air supply portion (2), thermocatalysis portion (3), adsorption portion (4), mixed heating portion (5), heat transfer portion (6) are supporting to be installed in corresponding assembly district (71).

3. An aqueous coating process exhaust treatment system according to claim 1, wherein: the heat exchange part (6) comprises a heat exchange box (61) and waste gas heat exchange pipes (62) and air heat exchange pipes (63) assembled in the heat exchange box (61), wherein a plurality of layers of partition plates (64) which are staggered are fixedly connected in the heat exchange box (61), the waste gas heat exchange pipes (62) and the air heat exchange pipes (63) are arranged at the gaps of the partition plates (64) in a zigzag manner, the waste gas heat exchange pipes (62) and the air heat exchange pipes (63) comprise a plurality of groups which are arranged side by side, the bottom interfaces of the waste gas heat exchange pipes (62) and the air heat exchange pipes (63) are respectively connected to a waste gas inlet pipe (621) and an air inlet pipe (631), the waste gas inlet pipe (621) and the air inlet pipe (631) are respectively connected with the dust removal part (1) and the air supply part (2), the top interfaces of the waste gas heat exchange pipes (62) and the air heat exchange pipes (63) are respectively connected to a waste gas outlet pipe (622) and an air outlet pipe (632), and the waste gas outlet pipe (622) are respectively connected to the hybrid heating part (5); the heat exchange box (61) top is equipped with air supply cover (65), air supply cover (65) with thermocatalysis portion (3) link to each other, heat exchange box (61) bottom still is equipped with heat medium calandria (66) and arranges water catch bowl (67) in heat medium calandria (66) bottom, heat medium calandria (66) with adsorption portion (4) link to each other, water catch bowl (67) bottom is equipped with drain pipe (68).

4. A water paint process exhaust treatment system as claimed in claim 3, wherein: the dust removing part (1) comprises an air inlet fan (11), an air outlet fan (12), a dust transmission assembly (13) and a plurality of groups of cyclone dust collectors (14) which are arranged side by side, wherein the air inlet ends (141) of the cyclone dust collectors (14) of each group are all communicated with an air inlet main pipe (15), the air inlet fan (11) is assembled on the air inlet main pipe (15), the air outlet ends (142) of the cyclone dust collectors (14) of each group are all communicated with an air outlet main pipe (16), the air outlet main pipe (16) is connected with an exhaust air inlet pipe (621) through a first conveying pipe (161), the air outlet main pipe (16) is assembled with the air outlet fan (12), and the dust outlet ends (143) of the cyclone dust collectors (14) of each group are communicated with the dust transmission assembly (13); the dust conveying assembly (13) comprises a conveying pipeline (131), a spiral conveying blade (132) and a driving motor (133), wherein the conveying pipeline (131) is arranged at the bottom of the cyclone dust collector (14) and is communicated with the dust discharging end (143), the spiral conveying blade (132) is rotatably arranged in the conveying pipeline (131), and the driving motor (133) is arranged at the outer side of the conveying pipeline (131) and is in power connection with the spiral conveying blade (132).

5. A water paint process exhaust treatment system as claimed in claim 3, wherein: the air supply part (2) comprises an air supply fan (21) and an air supply pipe (22), wherein the air supply fan (21) is assembled on the air supply pipe (22), and the air supply pipe (22) is connected with the air inlet pipe (631) through a second conveying pipe (221).

6. A water paint process exhaust treatment system as claimed in claim 3, wherein: the mixing heating part (5) comprises a heating tank (51), an upper heating zone (52) and a lower heating zone (53) which are kept sealed are arranged in the heating tank (51), the mixing heating part (5) further comprises an upper heating tube (54), a lower heating tube (55) and a stirring assembly (56) which are assembled in the upper heating zone (52) and the lower heating zone (53) respectively, the stirring assembly (56) comprises a stirring shaft (561) rotatably installed in the upper heating zone (52) and stirring blades (562) fixedly connected to the stirring shaft (561), and the stirring shaft (561) is in power connection with a driving assembly (8); the lower heating zone (53) is provided with a first air inlet interface (531) and a first air outlet interface (532) which are arranged oppositely, the first air inlet interface (531) is connected with the air outlet pipe (632) through a third conveying pipe (5311), and the first air outlet interface (532) is connected with the adsorption part (4); the upper heating zone (52) bottom is equipped with No. two air inlet connectors (521) and No. three air inlet connectors (522) that keep relative arrangement, no. two air outlet connectors (523) are equipped with at upper heating zone (52) top, no. two air inlet connectors (521) pass through No. four conveyer pipes (5211) with waste gas exit tube (622) link to each other, no. three air inlet connectors (522) with adsorption part (4) link to each other, no. two air outlet connectors (523) with thermocatalysis part (3) link to each other.

7. An aqueous coating process exhaust treatment system as defined in claim 6, wherein: the thermal catalysis portion (3) comprises a catalysis tank (31) and a cover disc (32), a cushion disc (33) and an air distribution disc (34) which are assembled in the catalysis tank (31) and are distributed from top to bottom, a catalysis outlet pipe (311) is assembled at the top of the catalysis tank (31), the catalysis outlet pipe (311) is connected with an air supply cover (65) of the heat exchange portion (6) through a fifth conveying pipe, a packing area (35) is formed in an area between the cover disc (32) and the cushion disc (33), a feeding pipe (312) and a discharging pipe (313) are assembled on the side wall of the catalysis tank (31), the feeding pipe (312) is connected to the lower surface of the cover disc (32), the feeding pipe (312) is connected to the bottom of the cushion disc (33), a catalysis inlet pipe (341) extending to the outer side of the catalysis tank (31) is communicated with the air distribution disc (34), the catalysis inlet pipe (341) is connected with a second air outlet interface (3411) through a sixth conveying pipe (3411), and the sixth conveying pipe (3411) is provided with a pump (2).

8. An aqueous coating process exhaust treatment system as defined in claim 6, wherein: the adsorption part (4) comprises a pressing disc (41), an air supply disc (42), an adsorption disc (43) and an assembly cylinder (44) which are in sealing butt joint, wherein two groups of adsorption discs (43) which are in symmetrical arrangement are rotatably arranged at the upper port and the lower port of the assembly cylinder (44), the side wall of the assembly cylinder (44) is provided with adsorption discharge pipes (441) and desorption discharge pipes (442) which are in relative distribution, the adsorption discharge pipes (441) are communicated with an outer discharge pipe (4411), and the desorption discharge pipes (442) are connected with the third air inlet interface (522) through a seventh conveying pipe (4421); the utility model discloses a device for absorbing waste gas in a boiler, including drive assembly (8), adsorption disc (43), air feed disc (42), exhaust gas spray pipe (422), air spray pipe (423) are equipped with respectively in two sets of arc air feed areas (421) that keep central symmetry, exhaust gas spray pipe (422), air spray pipe (423), are equipped with annular charging area (431) towards adsorption calandria (441), desorption calandria (442) one side respectively in two sets of adsorption disc (43), exhaust gas spray pipe (422) through No. eight conveyer pipe (4221) with heat medium calandria (66) link to each other, and are equipped with a booster fan on No. eight conveyer pipe (4221), air spray pipe (423) through No. nine conveyer pipe (4231) with No. one outlet port (532) link to each other, and are equipped with No. two booster fan (4232) on No. nine conveyer pipe 4231), outside fixed mounting of air feed disc (42) has.

9. An aqueous coating process exhaust treatment system as defined in claim 8, wherein: the inner side surfaces of the two groups of adsorption discs (43) are fixedly connected with reduction bevel gears (433), and the stirring shaft (561) is fixedly connected with a transmission bevel gear (5611) arranged at the outer side of the heating pipe; the driving assembly (8) comprises a gear motor (81), a driving shaft (82), a driving shaft (83) and a driving sprocket (84), wherein the driving shaft (82) is fixedly connected with an output shaft of the gear motor (81), a driving bevel gear (821) which is meshed with a driving bevel gear (5611) is fixedly connected to the driving shaft (82), the driving shaft (83) is rotatably installed in the assembly cylinder (44), a driving bevel gear (831) which is meshed with two groups of reduction bevel gears is fixedly connected to the driving shaft (83), the driving sprocket (84) is fixedly connected to the driving shaft (82) and the driving shaft (83), and the driving sprocket (84) is in continuous transmission through a chain (841).