CN110898557A - Spray drying room - Google Patents
Spray drying room Download PDFInfo
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- CN110898557A CN110898557A CN201911230898.0A CN201911230898A CN110898557A CN 110898557 A CN110898557 A CN 110898557A CN 201911230898 A CN201911230898 A CN 201911230898A CN 110898557 A CN110898557 A CN 110898557A
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- drying room
- spray drying
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
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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
- B01D53/04—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 with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/43—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by filtering the air charged with excess material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
- B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
- B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/60—Ventilation arrangements specially adapted therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
Abstract
The invention discloses a spray drying room which is provided with an air supply system and a waste gas treatment system which are integrated with the spray drying room; the air supply system comprises a fresh air box body fixedly connected with one side of the spray drying room, a fresh air inlet and an air supply outlet communicated with the interior of the spray drying room are formed in the fresh air box body, and an air supply fan with a heating unit is arranged between the fresh air inlet and the air supply outlet; the waste gas treatment system comprises a paint mist filtering box body and a waste gas purifying box body which are sequentially and fixedly connected with the other side of the spray drying room, wherein the paint mist filtering box body is provided with a paint mist filtering inlet communicated with the interior of the spray drying room and a paint mist filtering outlet communicated with the waste gas purifying box body, and at least two stages of filtering sections are arranged between the paint mist filtering inlet and the paint mist filtering outlet; the inside absorption module and the adsorption fan that are equipped with of exhaust purification box, the absorption module is located the air intake and the coating cloud of adsorption fan and filters between the export, the air outlet intercommunication of adsorption fan adsorbs purification discharge tube.
Description
Technical Field
The invention belongs to the field of coating and industrial waste gas purification, and particularly relates to a spraying and drying room with an integrated waste gas treatment device.
Background
In recent years, the emission of Volatile Organic Compounds (VOCs) has been enormous, and has attracted much attention. There are many industries that produce VOCs, such as petrochemicals, coatings, ink printing, electronics, rubber products, and the like. The VOCs produced in the coating industry accounts for about one third, and a small-sized coating workshop for automobile maintenance is also part of the coating industry. With the accelerated development of economy in China and the increase of material demand of people, automobiles are gradually popularized in families, and the number of the automobiles is continuously increased. The paint spraying operation generates paint mist and waste gas pollution during the maintenance of the automobile, and the treatment is required.
The spray booth and the waste gas treatment device thereof are separately designed, the problems of inconsistent design, low paint mist purification and waste gas purification efficiency exist, and the spray booth and the baking finish booth are separately arranged, so that the investment cost is high. Paint mist filtering usually has two modes, a wet method and a dry method, wherein the wet method has the problems of secondary pollution such as water pollution and the like, and the traditional dry method usually adopts simple paint mist filtering cotton to intercept paint mist, so that the purification efficiency is not high. The waste gas treatment is usually carried out by an adsorption technology, but the problems of short replacement period, high operation and maintenance cost and the like exist.
Disclosure of Invention
The technical problem solved by the invention is as follows: aiming at the problems of incongruity, low paint mist and waste gas purification efficiency and high operation and maintenance cost in the separate design of the structure of the existing spray booth and the independent structure of waste gas treatment, the spray drying room integrally designed with the waste gas treatment and air supply system is provided.
The invention is realized by adopting the following technical scheme:
the spraying drying room 12 is provided with an air supply system and a waste gas treatment system which are integrated with the spraying drying room;
the air supply system comprises a fresh air box body 6 fixedly connected with one side of the spray drying room 12, a fresh air inlet 1 and an air supply outlet 11 communicated with the interior of the spray drying room are arranged on the fresh air box body, and an air supply fan 37 with a heating unit 7 is arranged between the fresh air inlet 1 and the air supply outlet 11;
the waste gas treatment system comprises a paint mist filtering box body 16 and a waste gas purifying box body 22 which are sequentially and fixedly connected with the other side of the spray drying room, wherein a paint mist filtering inlet 34 communicated with the interior of the spray drying room and a paint mist filtering outlet 21 communicated with the waste gas purifying box body are arranged on the paint mist filtering box body 16, and at least two stages of filtering sections are arranged between the paint mist filtering inlet 34 and the paint mist filtering outlet 21; waste gas purification box 22 is inside to be equipped with adsorption module 28 and adsorption fan 32, adsorption module is located adsorption fan 32's air intake and lacquer fog filter outlet 21 between, adsorption fan 32's air outlet intercommunication adsorbs purification discharge pipe 24.
Furthermore, the inside new trend filter segment 4 that directly communicates with the new trend entry that is equipped with of new trend box, the inside filtration that removes dust and filter to the new trend that is equipped with of new trend filter segment 4, the district of heating that new trend filter segment 4 and heating unit 7 are located communicates, the export and the supply-air outlet 11 butt joint intercommunication of the district of heating.
Further, a backflow channel is arranged between the outlet of the heating area and the air supply outlet 11 and is connected to the inlet of the heating area in a backflow mode, and a backflow air valve 35 is arranged inside the backflow channel.
Further, the top of the spray drying room 12 is separated from a top air supply layer 13 by a flow equalizing filter plate 14, the air supply outlet 11 is arranged in the top air supply layer 13, and the paint mist filtering inlet 34 is arranged at the bottom of the spray drying room 12.
Furthermore, four layers of parallel filtering sections are arranged in the paint mist filtering box body 16, wherein a first filtering section close to a paint mist filtering inlet adopts a metal mesh filtering module with a backwashing spray system, and the bottom of the paint mist filtering box body 16 is also provided with a drainage system 33.
Further, a desorption fan 31 for desorbing the adsorption module 28 is further arranged in the exhaust gas purification box 22, an air inlet of the desorption fan 31 is connected to the catalytic combustion module through a desorption inlet pipeline 30, and an air outlet of the desorption fan 31 is connected to the adsorption module 28 through a desorption inlet air valve 29 and is connected to the catalytic combustion module through a desorption outlet pipeline 25 in a backflow manner; the directions of the air flows for respectively carrying out adsorption and desorption in the adsorption module 28 are opposite.
Further, a fresh air valve connected with the desorption outlet pipeline 25 is further arranged on the waste gas purification box body 22.
Further, the adsorption modules 28 are two groups respectively connected in parallel with the adsorption fan 32 and the desorption fan 31.
Further, the catalytic combustion module is disposed inside the exhaust gas purifying box 22, and includes a preheating region 42, a catalytic combustion region 44, and a heat exchange region 45, a heating component is disposed inside the preheating region 42, a catalyst for desorption gas combustion is disposed inside the catalytic combustion region 44, two heat exchange channels respectively communicating the heating region 42 and the catalytic combustion region 44 are disposed inside the heat exchange region 45, wherein the heat exchange channel communicated with the preheating region 42 is provided with a catalytic combustion module inlet 46 in butt joint with the desorption outlet pipeline 25, and the heat exchange channel communicated with the catalytic combustion region 44 is provided with a catalytic combustion module outlet 38 in butt joint with the desorption inlet pipeline 30.
Further, a temperature sensor 41 is arranged at the communication position of the heat exchange area 45 and the preheating area 42, and the temperature sensor 41 is in feedback connection with a heating component control module in the preheating area 42.
The spraying drying room has the following beneficial effects:
1) the flexibility and the applicability are strong. The invention can adopt different paint mist filtering combinations and waste gas purification modules aiming at different waste gas working conditions, and has strong flexibility and wide application range.
2) The spray drying room integrates the functions of spray painting and paint baking. According to the different operating condition of spraying paint or baking finish stoving, new trend box can send new trend or hot-blast in to spraying the baking house, ensures operation safety and stoving effect.
3) The occupied area is small. The invention adopts the modular design of the integrated machine, the air supply system and the waste gas treatment system are integrated with the spray drying room, no complex pipeline is arranged in the spray drying room, the structure is compact, and the occupied area is small.
4) The paint mist filtering efficiency is high and the maintenance is convenient. The multistage filter section combination design is adopted according to working conditions, and the modular structure design enables the filter module to be flexibly combined, so that the operation and maintenance are more convenient compared with the existing trench type paint mist filtering mode.
5) The waste gas purification efficiency is high. The waste gas purification box body integrates adsorption and desorption, has long service life and high purification efficiency, and ensures that the waste gas is discharged up to the standard.
6) The air supply cleanliness is high. The air supply system adopts a two-stage filtering mode, the first stage of filtering is arranged in front of the air supply fan to primarily purify air, the second stage of filtering is arranged at the top of the spray drying room, namely the flow equalizing filtering layer, so that the functions of pressure equalizing and high-efficiency filtering are achieved, and the filtered air is purified to meet the use requirement of the spray drying room.
Therefore, the spraying and drying room, the air supply system and the waste gas treatment system are integrated, the problems of incongruity, low purification efficiency and the like caused by independent design of the spraying and drying room, the air supply system and the waste gas treatment system are solved, the waste gas treatment system is in an all-in-one machine modular design, and the spraying and drying room, the air supply system and the waste gas treatment system are compact in structure, high in purification efficiency, low in operation cost, high in waste heat utilization rate, high in flexibility and universality and have great application value.
The invention is further described with reference to the following figures and detailed description.
Drawings
Fig. 1 is a schematic view of the internal structure of a spray drying room in the embodiment.
Fig. 2 is a side view of the internal structure of the exhaust gas purifying tank in the embodiment.
Fig. 3 is a schematic external structure diagram of the spray drying room in the embodiment.
Reference numbers in the figures: 1-fresh air inlet, 2-fresh air valve, 3-fresh air section inlet, 4-fresh air filtering section, 5-filter bag, 6-fresh air box body, 7-heating machine set, 8-heating zone outlet, 9-heat insulation wall body, 10-reflux inlet, 11-air supply outlet, 12-spray drying room, 13-top air supply layer, 14-flow equalizing filter plate, 15-first filtering section, 16-paint mist filtering box body, 17-back flushing spraying system, 18-second filtering section, 19-third filtering section, 20-fourth filtering section, 21-paint mist filtering outlet, 22-waste gas purifying box body, 23-waste gas treating system outlet, 24-adsorption purifying discharge pipeline, 25-desorption outlet pipeline, 26-desorption outlet air valve, 27-adsorption inlet/outlet air valve, 28-adsorption module, 29-desorption inlet air valve, 30-desorption inlet pipeline, 31-desorption fan, 32-adsorption fan, 33-drainage system, 34-paint mist filtering inlet, 35-backflow air valve, 36-fresh air and hot air mixing inlet, 37-air supply fan, 38-catalytic combustion module outlet, 39-catalytic combustion module heat preservation shell, 40-preheating zone inlet, 41-temperature sensor, 42-preheating zone, 43-catalytic combustion zone inlet, 44-catalytic combustion zone, 45-heat exchange zone, 46-catalytic combustion module inlet, and 47-access door.
Detailed Description
Examples
Referring to fig. 1, the spray drying room in the figure is an embodiment of the present invention, and specifically includes a fresh air box 6, a spray drying room 12, a paint mist filtering box 16, and a waste gas purifying box 22, which are integrally connected, where the spray drying room 12 is a paint spraying operation room, the fresh air box 6 is internally provided with an air supply system integrated structure for providing fresh air and hot air to the spray drying room, and the paint mist filtering box 16 and the waste gas purifying box 22 are formed by a waste gas treatment system for treating the spray waste gas generated by the spray drying room.
The fresh air box body 6 can provide fresh air (during paint spraying) or hot air (during drying) according to different working states of the spray drying room. The fresh air or hot air supply is determined by the on-off of the heating unit 7. The spray drying room 12 is composed of a top air supply layer 13 and a lower spray drying working layer. The integrated machine design of the box body structure of the paint mist filtering box body 16 and the waste gas purifying box body 22 can be connected through an inner flange and can also be detached. The paint mist filtering box body 16 adopts a modular design, and a multi-stage filtering series combination design can be flexibly selected according to process requirements. Waste gas purification box 22 is inside to have absorption purification and desorption purification performance, the paint mist containing organic waste gas that produces during the operation of spraying paint or baking finish is filtered the purification back through multistage paint mist by paint mist filter box 16, get into waste gas purification box 22, utilize the absorption module 28 of absorption purification section to adsorb the exhaust gas and purify back discharge up to standard, after the absorption material reaches the saturation, carry out desorption regeneration to absorption module 28, the absorption material can long-term steady operation, need not to change, greatly reduce operation maintenance cost.
Specifically, the other side fixed connection of paint mist filtering box 16 and spray drying room 12, waste gas purification box 22 and paint mist filtering box 16 fixed connection, paint mist filtering box 16 and one side of spray drying room 12 fixed connection are equipped with paint mist filtering inlet 34, the spraying waste gas that the inside spraying operation of spray drying room 12 produced enters into paint mist filtering box 16 through paint mist filtering inlet 34, one side of paint mist filtering box 16 and waste gas purification box 22 fixed connection is equipped with paint mist filtering outlet 21, waste gas after the paint mist filtering box 16 filters gets into waste gas purification box 22 through paint mist filtering outlet 21, be equipped with two-stage at least filter section in the paint mist filtering box 16 between paint mist filtering inlet 34 and paint mist filtering outlet 21, carry out filtration purification to the spraying waste gas that business turn over the paint mist filtering box. Inside adsorption module 28 and the adsorption fan 32 of being equipped with of exhaust gas purification box 22, adsorption module 28 is fixed to be set up between the air intake and the coating cloud filtration export 21 of adsorption fan 32, adsorbs the purification to the inside waste gas that gets into exhaust gas purification box 22, and adsorption fan 32's air outlet intercommunication adsorbs purification discharge pipe 24, adsorbs purification discharge pipe 24's export waste gas treatment system export 23 promptly, will purify the waste gas of accomplishing and discharge.
Specifically, still be equipped with new trend filter segment 4 in new trend box 6 is inside, the top and the new trend of new trend filter segment 4 enter the mouth 1 and directly communicate, the bottom export sets up filtration structure and removes dust the new trend and filter, the filter bag 5 is crossed for adopting the high efficiency filter material 600 mesh precision level to the filtration structure of new trend filter segment 4 inside, can ensure that the air cleanliness factor reaches the dust volume and does not exceed 1.5mg/m3, and the biggest dirt particle is not more than 4 mu m, air supply filtration efficiency > 98%.
The outlet end of the fresh air filtering section 4 is connected with the air inlet end of the air supply fan 37, the air outlet end of the air supply fan 37 is communicated with the heating zone where the heating unit 7 is located, and the outlet 8 of the heating zone is communicated with the air supply outlet 11 of the fresh air box body 6 in a butt joint mode. A backflow inlet 10 is further connected between the outlet 8 of the heating area and the air supply outlet 11 in a bypassing manner, the backflow inlet 10 is communicated with a backflow channel arranged inside the fresh air box body 6, the outlet of the backflow channel is communicated with a fresh air and hot air mixing inlet 36 in a backflow manner, backflow communication is achieved between the fresh air and hot air inlet 36 and the heating area, and a backflow air valve 35 is arranged in the backflow channel.
When the paint baking room 12 is used for baking paint, outdoor fresh air enters the fresh air box body 6 from the fresh air inlet 1 through the fresh air valve 2 and the fresh air section inlet 3, is filtered by the filter bag 5 of the fresh air filtering section 4 and then is sent into the fresh air and hot air mixing inlet 36 of the air supply fan 37, is mixed with heated return air and then is sent into the heating unit 7 through the air supply fan 37, the heated air is sent into the paint baking room 12 through the air supply outlet 11, the other part of air is returned to the air supply fan 37 through the backflow inlet 10 and the backflow air valve 35 for mixing and heating again, and the waste gas in the paint baking room 12 is slowly extruded by the air sent into the paint baking room 12, so that the paint baking room is heated and the indoor waste gas concentration is reduced. And when the spray drying room 12 carries out the operation of spraying paint, do not require to send into hot-blastly toward the room of spraying paint, as long as the clean new trend guarantee operation workman's safety can, at this moment, outdoor fresh air is by new trend entry 1 through new trend valve 2 by new trend section entry 3 entering air supply section 6, filter the back through the filter bag 5 of new trend filter section 4, send into the spray drying room 12 through air supply fan 37 by supply-air outlet 11, heating unit 7 and backward flow air valve 35 do not open at this moment, the air of sending into the spray drying room 12 will spout the waste gas in the drying room 12 and extrude slowly, thereby realize the cleanliness factor of operation workman's air in the spray drying room 12 and reduce indoor waste gas concentration. Therefore, the paint spraying and baking functions of the paint spraying and baking room can be integrated. According to the actual use condition, the opening angles of the heating unit 7, the fresh air valve 2 and the return air valve 35 can be adjusted, and low-temperature-rise and large-flow heating or high-temperature-rise and small-flow heating switching control is realized.
The inner wall of the fresh air box body 6 is provided with a heat preservation wall body 9 for preserving heat of the heated fresh air.
The top of spraying the baking house 12 separates through setting up the filter 14 that flow equalizes and sets up top air supply layer 13, air supply outlet 11 with the intercommunication of new trend box 6 sets up in top air supply layer 13, the new trend at first gets into top air supply layer 13, then through the filter 14 that flow equalizes from top to bottom evenly get into inside spraying the baking house 12, carry out the secondary filter to the new trend of sending into, paint mist filters entry 34 and then sets up in the bottom of spraying the baking house 12, be rectangular form transverse arrangement, through the downward new trend will spray the inside spraying waste gas who produces of baking house 12 and extrude downwards and filter entry 34 and discharge from paint mist.
Four layers of parallel filtering sections are arranged in the paint mist filtering box body 16, wherein a first filtering section close to a paint mist filtering inlet adopts a metal mesh filtering module with a back flush spraying system, and the bottom of the paint mist filtering box body 16 is also provided with a drainage system 33. Paint mist-containing waste gas of the spray drying room 12 enters the paint mist filtering box body 16 from the bottom through the paint mist filtering inlet 34 and sequentially passes through the first filtering section 15, the second filtering section 18, the third filtering section 19 and the fourth filtering section 20 to carry out four-stage filtering purification, and all the filtering sections adopt the same design size, so that the universality and the replaceability of the filtering module are ensured, and the filtering system can be flexibly combined. The first filtering section 15 in this embodiment adopts a G2 wire mesh filtering module, a backwashing spray system 17 is configured to backwash the G2 wire mesh filtering module, the backwashing spray system 17 is composed of a circulating pump, a spray pipeline, a nozzle and spray liquid, paint mist modifying and viscosity eliminating agents can be added into the spray liquid to eliminate viscosity of the paint mist, further failure caused by blockage of the G2 wire mesh filtering module is avoided, the service life of the spraying system is greatly prolonged, the spray liquid is sprayed out from the nozzle through the spray pipeline by the circulating pump, the spray liquid can be recycled, when the spraying system cannot be used continuously, the spray liquid can be discharged by a water discharge system 33 at the bottom of a box body, and the spray liquid and the water discharge system reach the standard after treatment. The second filter stage 18 employs a DPA large dust bag filter module, the third filter stage 19 employs an F7 bag filter module, and the fourth filter stage 20 employs an F9 bag filter module.
In particular spray paint, the first filter stage 15 within the mist filter housing 1 may employ cartridge filter modules for a particular quick-drying paint. The second filtration stage 18 may employ F5 bag filtration modules, the third filtration stage 19 may employ F7 bag filtration modules, and the fourth filtration stage 20 may employ F9 bag filtration modules.
With reference to fig. 1 and fig. 2, the inside adsorption module 28 of exhaust gas purification box 22 is fixed to be set up between paint mist filter outlet 21 and adsorption fan 32, adsorption module 28 is by the adsorption material drawer, baffle and adsorption material constitute, it seals to pass through the baffle at adsorption module 28 top and bottom, the adsorption material can adopt the activated carbon material, or make up molecular sieve material and activated carbon material and use, the relative activated carbon material temperature resistance of molecular sieve material is better, can place the upper and lower portion of activated carbon material in with the molecular sieve material, with the activated carbon material package in the middle of, better performance combination purification effect, and effectively avoid the emergence of incident such as activated carbon fires. All set up at the top and the bottom of adsorption module 28 and adsorb import and export blast gate 27, open and adsorb import and export blast gate 27 after, the waste gas that comes from coating cloud filtration export 21 gets into the inside adsorption material of adsorption module 28 through adsorbing import and export blast gate 27, and the waste gas after the absorption is accomplished is discharged from the adsorption import and export blast gate 27 of bottom, then pumps to adsorbing purification emission pipeline 24 through adsorption blower 32 and discharges.
The inside desorption fan 31 that carries out the desorption to adsorption module 28 that still is equipped with of exhaust gas purification box 22, the air intake of desorption fan 31 is connected to the catalytic combustion module through desorption inlet pipeline 30, the air outlet of desorption fan 31 is connected to the desorption inlet air valve 29 that sets up in the 28 bottoms of adsorption module, still be equipped with desorption outlet air valve 26 at the top of adsorption module 28, desorption outlet air valve 26 is connected to desorption outlet pipeline 25, it carries out catalytic combustion to be connected to the catalytic combustion module with desorption gas reflux. Inside the adsorption module 28, the air flow during adsorption and purification flows from top to bottom, and the air flow during desorption flows from bottom to top. The exhaust purification box 22 is also provided with a fresh air valve connected with the desorption outlet pipeline 25, and when desorption is started, circulation heating desorption is realized after external air is introduced.
Specifically, the catalytic combustion module sets up inside exhaust gas purification box 22, and inside includes preheating zone 42, catalytic combustion district 44 and heat transfer district 45, and the inside heater block that is equipped with of preheating zone 42 includes multiunit electric heating pipe, and the inside catalyst drawer that sets up of catalytic combustion district 44 is used for filling desorption gas catalytic combustion's catalyst, and heat transfer district 45 is inside to be equipped with two heat transfer passageways that communicate respectively and heat the district 42 and catalytic combustion district 44 of heating. Wherein, the heat exchange channel communicated with the preheating zone 42 is provided with a catalytic combustion module inlet 46 butted with the desorption outlet pipeline 25, the heat exchange channel communicated with the catalytic combustion zone 44 is provided with a catalytic combustion module outlet 38 butted with the desorption inlet pipeline 30, the heat exchange zone 45 is communicated with the preheating zone 42 through a preheating zone inlet 40, the preheating zone inlet 40 is provided with a temperature sensor 41, and the temperature sensor 41 is in feedback connection with a heating component control module in the preheating zone 42. After the desorption gas finishes desorbing the adsorption module, the desorption gas enters the heat exchange area from the inlet 46 of the catalytic combustion module through the desorption outlet pipeline 25, then enters a preheating zone 42 from an inlet 40 of the preheating zone through a heat exchange pipeline of the heat exchange zone, the desorbed gas is preheated by a heating component of the preheating zone 42, the desorbed gas enters a catalytic combustion zone 44 from an inlet 43 of the catalytic combustion zone after being preheated, the harmful substances in the gas and the catalyst generate catalytic combustion reaction, the gas after catalytic combustion enters another heat exchange channel of the heat exchange zone 45, and the gas is subjected to heat exchange with the desorption gas circularly entering the catalytic combustion module, the circularly desorbed gas is subjected to auxiliary heating by using heat generated after catalytic combustion, and finally the gas after the catalytic combustion is exhausted from an outlet 38 of the catalytic combustion module to the adsorption module again through a desorption inlet pipeline 30 by a desorption fan 31 for cyclic desorption, as shown by an airflow arrow shown in fig. 2.
The catalytic combustion module can determine the number of the electric heating pipes in the preheating zone 42 according to the temperature measured by the temperature sensor 41, if the temperature is lower than the ignition temperature of the exhaust gas, the number of the opened electric heating pipes is increased, the exhaust gas is heated to the ignition temperature and then is stopped to be heated, and if the temperature of the exhaust gas reaches the ignition temperature, the number of the opened electric heating pipes is reduced or the electric heating pipes are controlled not to work. The catalytic combustion module heat preservation shell 39 prevents the internal heat from being dissipated, and as the heat preservation wall 9 of the fresh air box body 6, the catalytic combustion module heat preservation shell can be made of high-quality aluminum silicate heat preservation materials, so that the heat preservation and heat insulation effects are ensured.
In practical application, can be in inside two sets of absorption modules 28 that set up of exhaust gas purification box 22, two sets of absorption modules 28 are all parallelly connected the setting with absorption fan 32 and desorption fan 31 respectively, when a set of absorption that carries out waste gas purifies, carries out the desorption to another group, can ensure the long-term steady operation of exhaust gas treatment system.
Referring to fig. 3, the fresh air box 6, the paint mist purifying box 16 and the waste gas purifying box 22 are all provided with installation and maintenance access doors 47, so that the maintenance and operation are convenient, and each section of box can be provided with one or more access doors according to the requirement of an operation space.
The foregoing embodiments illustrate the principles and features of the present invention and their advantages, and it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the specific principles of operation of the present invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (10)
1. The spray drying room is characterized in that: the spraying drying room (12) is provided with an air supply system and a waste gas treatment system which are integrated with the spraying drying room;
the air supply system comprises a fresh air box body (6) fixedly connected with one side of the spray drying room (12), a fresh air inlet (1) and an air supply outlet (11) communicated with the interior of the spray drying room are arranged on the fresh air box body, and an air supply fan (37) with a heating unit (7) is arranged between the fresh air inlet (1) and the air supply outlet (11);
the waste gas treatment system comprises a paint mist filtering box body (16) and a waste gas purifying box body (22) which are sequentially and fixedly connected with the other side of the spray drying room, wherein a paint mist filtering inlet (34) communicated with the interior of the spray drying room and a paint mist filtering outlet (21) communicated with the waste gas purifying box body are formed in the paint mist filtering box body (16), and at least two stages of filtering sections are arranged between the paint mist filtering inlet (34) and the paint mist filtering outlet (21); waste gas purification box (22) inside is equipped with adsorption module (28) and adsorption fan (32), adsorption module is located the air intake and the coating cloud of adsorption fan (32) and filters between export (21), the air outlet intercommunication of adsorption fan (32) adsorbs purification discharge pipe way (24).
2. The spray drying room according to claim 1, wherein a fresh air filtering section (4) directly communicated with a fresh air inlet is arranged inside the fresh air box, a filtering structure for removing dust and filtering fresh air is arranged inside the fresh air filtering section (4), the fresh air filtering section (4) is communicated with a heating zone where the heating unit (7) is located, and an outlet of the heating zone is communicated with the air supply outlet (11) in a butt joint manner.
3. A spray drying room according to claim 2, wherein a return channel is arranged between the outlet of the heating area and the air supply outlet (11) and is connected with the inlet of the heating area in a return mode, and a return air valve (35) is arranged in the return channel.
4. A spray drying room according to claim 1, the top of the spray drying room (12) being separated from the top air supply layer (13) by a flow equalizing filter plate (14), the air supply opening (11) being arranged in the top air supply layer (13), the paint mist filtering inlet (34) being arranged at the bottom of the spray drying room (12).
5. The spray drying room of claim 1, wherein four layers of parallel filtering sections are arranged in the paint mist filtering box body (16), a first filtering section close to a paint mist filtering inlet adopts a metal mesh filtering module with a back flush spraying system, and a drainage system (33) is further arranged at the bottom of the paint mist filtering box body (16).
6. The spray drying room of claim 1, wherein a desorption fan (31) for desorbing the adsorption module (28) is further arranged inside the exhaust gas purification box body (22), an air inlet of the desorption fan (31) is connected to the catalytic combustion module through a desorption inlet pipeline (30), and an air outlet of the desorption fan (31) is connected to the adsorption module (28) through a desorption inlet air valve (29) and is connected to the catalytic combustion module through a desorption outlet pipeline (25) in a backflow mode; the air flow directions of the adsorption module (28) for respectively adsorbing and desorbing are opposite.
7. The spray drying room of claim 6, wherein the exhaust gas purification box body (22) is further provided with a fresh air valve connected with the desorption outlet pipeline (25).
8. A spray drying room according to claim 6 or 7, wherein the adsorption modules (28) are in two groups connected in parallel with the adsorption fan (32) and the desorption fan (31), respectively.
9. The spray drying room of claim 6, wherein the catalytic combustion module is arranged inside the exhaust gas purification box (22) and comprises a preheating zone (42), a catalytic combustion zone (44) and a heat exchange zone (45), heating components are arranged inside the preheating zone (42), a catalyst for desorption gas combustion is arranged inside the catalytic combustion zone (44), two heat exchange channels respectively communicating the heating zone (42) and the catalytic combustion zone (44) are arranged inside the heat exchange zone (45), the heat exchange channel communicating with the preheating zone (42) is provided with a catalytic combustion module inlet (46) in butt joint with the desorption outlet pipeline (25), and the heat exchange channel communicating with the catalytic combustion zone (44) is provided with a catalytic combustion module outlet (38) in butt joint with the desorption inlet pipeline (30).
10. The spray drying room of claim 9, wherein a temperature sensor (41) is arranged at the communication position of the heat exchange area (45) and the preheating area (42), and the temperature sensor (41) is in feedback connection with a heating component control module in the preheating area (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230898.0A CN110898557A (en) | 2019-12-05 | 2019-12-05 | Spray drying room |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911230898.0A CN110898557A (en) | 2019-12-05 | 2019-12-05 | Spray drying room |
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| CN110898557A true CN110898557A (en) | 2020-03-24 |
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| CN201911230898.0A Pending CN110898557A (en) | 2019-12-05 | 2019-12-05 | Spray drying room |
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| CN (1) | CN110898557A (en) |
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| CN112337713A (en) * | 2021-01-11 | 2021-02-09 | 潍坊维润金属科技有限公司 | Sheet metal component spraying rack |
| CN113457339A (en) * | 2021-06-22 | 2021-10-01 | 东莞市广正模具塑胶有限公司 | Spray paint waste gas inner loop subtracts wind thickening device |
| CN113521964A (en) * | 2021-08-25 | 2021-10-22 | 鼎信阳光环境技术有限公司 | Be applicable to water based paint spray booth winter constant temperature waste gas treatment device |
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Application publication date: 20200324 |