CN103480226A - Industrial volatile organic pollutant purifying system dedicated to painting workshops - Google Patents
Industrial volatile organic pollutant purifying system dedicated to painting workshops Download PDFInfo
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- CN103480226A CN103480226A CN201310454167.0A CN201310454167A CN103480226A CN 103480226 A CN103480226 A CN 103480226A CN 201310454167 A CN201310454167 A CN 201310454167A CN 103480226 A CN103480226 A CN 103480226A
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Abstract
The invention relates to an industrial volatile organic pollutant purifying system dedicated to painting workshops. The system comprises a catalytic gas inlet heater, a catalyzing bed, a catalyzing fan, a heat exchanger, an adsorption bed, an adsorption fan, a spraying and filtering device, a fire barrier, a filter, a desorption gas circulating fan, a desorption gas circulating heater and an adsorption bed desorption heater, wherein an industrial volatile organic pollutant waste gas inlet, a purified gas outlet, a desorption waste gas outlet, a desorption gas inlet, a desorption gas circulating outlet and a desorption gas circulating inlet are formed on the adsorption bed; and the heat exchanger is provided with a catalyzed tail gas inlet, a catalyzed tail gas outlet, a catalyzed gas inlet, a catalyzed gas outlet, a desorption gas supply inlet and a desorption gas supply outlet. The system improves the treatment heat efficiency, reduces the heat loss, improves the heat recovery rate, is more uniform in the temperature in the catalyzing bed during combustion, improves the combustion efficiency and the purification rate, improves heat exchange, more reasonably utilizes heat energy, and meets the requirements on energy conservation and emission reduction.
Description
Technical field
The invention belongs to the cleaning system field, especially a kind of industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop.
Background technology
Raising along with people's living standard, people's environmental pollution is more and more paid attention to, this word of PM2.5 occurred recently is exactly one of index of atmosphere pollution, and in PM2.5, industrial volatile organic pollutants is that people's health is endangered to one of maximum pollutant, in the cleaning system that the processing industrial volatile organic pollutants is used at present, capital equipment comprises adsorbent bed and catalytic bed, catalytic bed is made building enclosure by heat resisting steel sheet material or industrial furnace building material usually, in its existing catalytic bed structure, air inlet and air outlet are located at the two ends up and down of catalytic bed, although existing structure can be realized catalytic combustion, but there are the following problems: 1, the thermal losses of catalytic bed furnace binding own is large, the recuperation of heat utilization ratio is lower, 2, non-uniform temperature in the catalytic bed furnace binding, totally be the centre temperature high, the edge temperature is low, reduced the industrial volatile organic pollutants efficiency of combustion, affect the purifying rate of catalytic combustion, 3, energy-saving effect is poor, do not meet the energy-saving and emission-reduction requirement, in desorption process, adsorbent bed desorption gas concentration can not well be controlled in addition, affect catalytic combustion efficiency and heat utilization rate, and often mixing the paint coating cloud at some paint spraying workshop industrial volatile organic pollutants, when adsorbent bed adsorbs, the paint coating cloud can be attached on the sorbing material in adsorbent bed, cause the adsorbent bed cisco unity malfunction, reduce purified treatment efficiency, improved the purified treatment cost, impact is normal produces.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop is provided, this cleaning system has effectively improved the thermal efficiency of processing, reduce thermal losses, improve the recuperation of heat utilization rate, in catalytic bed during burning in desorption system, temperature is more even, efficiency of combustion and purifying rate have been improved, increased heat exchange and more rationally utilized heat energy, met the energy-saving and emission-reduction requirement, the gas temperature of input catalytic bed can effectively be controlled.
The present invention solves its technical problem and is achieved through the following technical solutions:
A kind of industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop, it comprises the catalysis air intake heater, catalytic bed, the catalysis blower fan, heat exchanger, adsorbent bed, the absorption blower fan, spray filter, spark arrester, filter, the desorption gas circulating fan, desorption gas recirculation heater and adsorbent bed desorption heater, be provided with the industrial volatile organic pollutants exhaust gas inlet on adsorbent bed, purified gas outlet, desorption waste gas delivery outlet, the desorption gas input port, desorption gas loop exit and desorption gas loop head, this industrial volatile organic pollutants exhaust gas inlet connects a spark arrester by filter, this spark arrester connects a spray filter by pipeline, purified gas outlet connects an absorption blower fan by pipeline, and heat exchanger is provided with the catalysis gas inlet, the outlet of catalysis tail gas, the import of catalysis gas, the outlet of catalysis gas, desorption entrance and the desorption outlet of supplying gas of supplying gas, the desorption gas loop exit connects desorption gas recirculation heater air inlet by pipeline, this desorption gas recirculation heater air outlet connects desorption gas circulating fan air inlet by pipeline, this desorption gas circulating fan air outlet connects the desorption gas loop head on adsorbent bed by pipeline, the desorption gas loop exit of heat exchanger and desorption gas loop head are connected on the pipeline between desorption gas recirculation heater and desorption gas circulating fan by pipeline respectively, the catalysis gas outlet of heat exchanger connects the catalysis gas inlet of heat exchanger by catalysis air intake heater and catalytic bed, the outlet of catalysis tail gas connects the desorption gas entrance of adsorbent bed by adsorbent bed desorption heater, the catalysis gas import of heat exchanger connects the desorption waste gas delivery outlet of adsorbent bed by the catalysis blower fan.
And, described catalytic bed comprises airscoop shroud, body of heater, air leaving cover, the body of heater upper end is fixedly mounted with airscoop shroud, the body of heater lower end is fixedly mounted with air leaving cover, body of heater comprise the body of heater peripheral board with and the bottom plate that is fixedly mounted with of the upper head plate that is fixedly mounted with of upper end and its lower end, evenly be fixed with heat-insulation layer at body of heater peripheral board outer wall, coaming plate in one body of heater is set in the body of heater peripheral board, be arranged alternately air intake duct and gas off-take between coaming plate and body of heater peripheral board in body of heater, the import of air intake duct is arranged on upper head plate, the outlet of air intake duct is arranged between bottom plate and the interior coaming plate of body of heater, the import of gas off-take is arranged between upper head plate and the interior coaming plate of body of heater, the outlet of gas off-take is arranged on bottom plate, be provided with the air inlet kuppe on the upper head plate middle part of corresponding airscoop shroud import, be provided with the combustion gas kuppe on below the upper head plate middle part, be provided with the catalytic bed heater at air intake port in corresponding body of heater, be provided with the kuppe of giving vent to anger below the bottom plate middle part of corresponding air leaving cover outlet, airscoop shroud connects the catalysis air intake heater, air leaving cover connects the catalysis gas inlet.
And the quantity of described air intake duct and gas off-take is identical and evenly alternately be arranged in body of heater between coaming plate and body of heater peripheral board.
And described air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and the kuppe of giving vent to anger are inverted positive rectangular pyramid structure.
And, described air intake duct adopt rectangular steel pipe and be arranged on the body of heater peripheral board with the interior coaming plate of body of heater between, gas off-take is surrounded by coaming plate in air intake duct rectangle steel tube wall, body of heater peripheral board and the body of heater of its both sides.
And, be provided with catalyst bracket in the body of heater of described catalytic bed heater top, catalyst layer is installed on catalyst bracket.
And, be provided with the explosion-proof relief mouth on described airscoop shroud.
And, described spray filter comprises a tower body, a side lower part at tower body is made air inlet, air outlet is made on the tower body top of a side relative to air inlet, the first filter course is set respectively from bottom to up in tower body, the second filter course and demist layer, be evenly equipped with the bottom shower nozzle below the first filter course, be evenly equipped with the middle part shower nozzle between the first filter course and the second filter course, be evenly equipped with the top shower nozzle between the second filter course and demist layer, tower body air outlet one side is fixedly mounted with a filter, this filter air inlet is communicated with the tower body air outlet, this filter is provided with the filter air outlet, be horizontally disposed with the particle filter course in filter, the filter air outlet connects spark arrester by pipeline.
And described the first filter course below is provided with arc wind waveguide plate, this arc wind waveguide plate is corresponding with air inlet, and the tower body bottom is provided with aqua storage tank, and the aqua storage tank bottom is provided with discharge outlet.
And described the first filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid, the second filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid.
Advantage of the present invention and beneficial effect are:
1, originally be exclusively used in the industry volatilizable organic pollutant purifying system of painting workshop and be provided with the industrial volatile organic pollutants exhaust gas inlet on adsorbent bed, purified gas outlet, desorption waste gas delivery outlet, the desorption gas input port, desorption gas loop exit and desorption gas loop head, this industrial volatile organic pollutants exhaust gas inlet connects a spark arrester by filter, this spark arrester connects a spray filter by pipeline, purified gas outlet connects an absorption blower fan by pipeline, heat exchanger is provided with the catalysis gas inlet, the outlet of catalysis tail gas, the import of catalysis gas, the outlet of catalysis gas, desorption entrance and the desorption outlet of supplying gas of supplying gas, the desorption gas loop exit connects desorption gas recirculation heater air inlet by pipeline, this desorption gas recirculation heater air outlet connects desorption gas circulating fan air inlet by pipeline, this desorption gas circulating fan air outlet connects the desorption gas loop head on adsorbent bed by pipeline, the desorption gas loop exit of heat exchanger and desorption gas loop head are connected on the pipeline between desorption gas recirculation heater and desorption gas circulating fan by pipeline respectively, the catalysis gas outlet of heat exchanger connects the catalysis gas inlet of heat exchanger by catalysis air intake heater and catalytic bed, the outlet of catalysis tail gas connects the desorption gas entrance of adsorbent bed by adsorbent bed desorption heater, the catalysis gas import of heat exchanger connects the desorption waste gas delivery outlet of adsorbent bed by the catalysis blower fan, this structure has realized when in the desorption heating circulation system, gas industry volatile organic pollutants concentration reaches self-sustaining burning concentration introducing the process imagine of catalytic bed again, make the catalytic bed after preheating can enter fast the self-sustaining burning state, the heat feedback that catalytic combustion is produced is enough to maintain catalytic bed temperature, and make plate type heat exchanger obtain enough thermals source, for continuing desorption, adsorbent bed provides heat energy, and carry out the desorption preheating for next adsorbent bed simultaneously, reach the design conditions requirement, effectively play a role.For minimizing auxiliary heating, saving energy consumption create conditions.
2, originally be exclusively used in heat exchanger in the industry volatilizable organic pollutant purifying system of painting workshop and be provided with the catalysis gas inlet, the outlet of catalysis tail gas, the import of catalysis gas, the outlet of catalysis gas, desorption entrance and the desorption outlet of supplying gas of supplying gas, entrance and the desorption outlet of supplying gas of supplying gas of this desorption is connected in parallel on the pipeline between desorption gas recirculation heater and desorption gas circulating fan by pipeline, supply gas device for cleaning pipeline that entrance connects of desorption is crossed triple valve and is communicated on the pipeline between desorption gas recirculation heater and desorption gas circulating fan, this structure can be sent the catalytic bed catalysis tail gas of self-sustaining burning into plate type heat exchanger and reach industrial volatile organic pollutants desorption temperature in adsorbent bed by heat exchange, even can close electric heater to save electric energy, while especially for a plurality of adsorbent beds, being connected in cleaning system the circulation desorption, adsorbent bed output concentration can meet catalytic bed self-sustaining burning concentration, during self desorption, the recyclegas temperature can meet by plate type heat exchanger, realized only in initial heating, using electric heater, all the other times can be closed the self-holding heat supply that electric heater is realized whole cleaning system, greatly saved electric energy.
3, originally being exclusively used in the industry volatilizable organic pollutant purifying system of painting workshop adsorbent beds is incorporated into catalytic bed by the industrial volatile organic pollutants after desorption again to catalytic bed self-sustaining burning concentration and carries out catalytic combustion, guaranteed catalytic bed temperature, prevent from entering a gas " blast-cold " effect to catalytic bed, effectively prevented catalyst poisoning.
4, originally be exclusively used in catalytic bed in the industry volatilizable organic pollutant purifying system of painting workshop and comprise airscoop shroud, body of heater, air leaving cover, the body of heater upper end is fixedly mounted with airscoop shroud, the body of heater lower end is fixedly mounted with air leaving cover, body of heater comprise the body of heater peripheral board with and the bottom plate that is fixedly mounted with of the upper head plate that is fixedly mounted with of upper end and its lower end, evenly be fixed with heat-insulation layer at body of heater peripheral board outer wall, coaming plate in one body of heater is set in the body of heater peripheral board, be arranged alternately air intake duct and gas off-take between coaming plate and body of heater peripheral board in body of heater, the import of air intake duct is arranged on upper head plate, the outlet of air intake duct is arranged between bottom plate and the interior coaming plate of body of heater, the import of gas off-take is arranged between upper head plate and the interior coaming plate of body of heater, the outlet of gas off-take is arranged on bottom plate, be provided with the air inlet kuppe on the upper head plate middle part of corresponding airscoop shroud import, be provided with the combustion gas kuppe on below the upper head plate middle part, be provided with the catalytic bed heater at air intake port in corresponding body of heater, be provided with the kuppe of giving vent to anger below the bottom plate middle part of corresponding air leaving cover outlet, airscoop shroud connects the catalysis air intake heater, air leaving cover connects the catalysis gas inlet, air intake duct is set for this kind of over-over mode and gas off-take can be realized the even air inlet of catalytic bed bottom of furnace body surrounding, thereby the industrial volatile organic pollutants that makes to enter body of heater is attracted to the surface of cat ceramic carrier more uniformly, make the body of heater internal combustion even, high-temperature gas after burning refluxes downwards evenly by gas off-take, make the bottom of furnace body temperature-compensating even, overcome in prior art catalytic bed body of heater centre temperature high, the uneven shortcoming of the low heating of edge temperature, efficiency of combustion and purifying rate have been improved, through heat exchanger, catalytic bed catalytic combustion heat further can be utilized, realize energy-saving and emission-reduction.
5, originally the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop is provided with the air inlet kuppe on the upper head plate middle part of corresponding airscoop shroud import, be provided with the combustion gas kuppe on below the upper head plate middle part, be provided with heater at air intake port in corresponding body of heater, this heater is packed on the body of heater peripheral board, be provided with the kuppe of giving vent to anger below the bottom plate middle part of corresponding air leaving cover outlet, the air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and the kuppe of giving vent to anger are inverted positive rectangular pyramid structure, this kind of structural design can effectively realize even air inlet, evenly burning, the VOCs gas uniform burnt enters gas off-take, effectively improve catalytic bed edge temperature, after entering into air leaving cover, evenly discharge, for realizing high burning efficiency and purifying rate, furnace binding lays the first stone.
6, originally being exclusively used in the industry volatilizable organic pollutant purifying system of painting workshop front end is provided with the catalysis air intake heater is provided with the catalytic bed heater in catalytic bed, it is fast that this kind arranges firing rate, efficiency is high, be arranged on the air intake port position, be conducive to abundant burning, improve purifying rate, thermocouple is installed in addition on sidewall of the furnace body and facilitates temperature monitoring in body of heater, improve security.
7, the industry volatilizable organic pollutant purifying system that originally is exclusively used in painting workshop adopts over-over mode that air intake duct and gas off-take are set, and effectively by the recycling of catalytic combustion heat, performs to ultimate attainment.Utilize catalyst combustion reaction heat to carry out preheating to the gas that enters catalytic bed.This warm is for belonging to countercurrent flow for the air-flow in catalytic bed, for the high-temperature catalytic tail gas flow through in the air flue formed by coaming plate in body of heater and body of heater peripheral board, belonging to the following current heat exchange, gas in air intake duct is heated on three directions, and make heat exchange unit to greatest extent near thermal source, reduce heat loss, improve heat exchange efficiency, to guarantee that catalytic bed reaches the catalysis initiation temperature at the stylish VOCs gas entered of normal combustion, contribute to maintain that catalyticing combustion process is stable carries out, reduce and even break away from the dependence to auxiliary electrical heater.
8, originally be exclusively used in high-temperature tail gas that in the industry volatilizable organic pollutant purifying system of painting workshop, catalytic combustion produces along gas off-take, it is the process that the body of heater wall is back to the catalytic bed lower part outlet, the catalytic bed fringe region is carried out to the back feeding heating, contribute to the maintenance of catalytic bed bulk temperature with even, impel catalytic combustion to be evenly distributed in whole catalytic bed cross section, improve the catalytic combustion purifying rate, and form benign cycle thus, be beneficial to catalytic combustion and carry out continually and steadily.
9, originally being exclusively used in the air inlet kuppe and the combustion gas kuppe that arrange on upper head plate in the industry volatilizable organic pollutant purifying system of painting workshop is design for disassembly, has facilitated the replacing of catalytic bed body of heater inner catalyst, has improved production efficiency.
10, originally be exclusively used in that in the industry volatilizable organic pollutant purifying system of painting workshop, air intake duct can be different from the quantity of gas off-take, also can be identical, the air intake duct sectional area can equal the gas off-take sectional area, the air intake duct sectional area also can be greater than the gas off-take sectional area, the air intake duct sectional area can also be less than the gas off-take sectional area, determine different air intake ducts and the cross-section relation between gas off-take according to climate reasons, VOCs gas treatment amount and catalyst use amount, make it more adapt to the processing requirements of different situations.
11, originally be exclusively used in the industry volatilizable organic pollutant purifying system of painting workshop air intake duct adopt rectangular steel pipe and be arranged on the body of heater peripheral board with the interior coaming plate of body of heater between, gas off-take is surrounded by coaming plate in air intake duct rectangle steel tube wall, body of heater peripheral board and the body of heater of its both sides, this kind of mode design can effectively be reduced the steel use amount, reduce construction costs, for energy-saving and cost-reducing new design, reach processing requirements fully.
12, originally being exclusively used in body of heater peripheral board cross section in the industry volatilizable organic pollutant purifying system of painting workshop is rectangle or square or circular, in body of heater, the coaming plate cross section is rectangle or square or circular, the air intake duct cross section is rectangle or square or fan-shaped or circular or encircle fan-shapedly, and the gas off-take cross section is rectangle or square or fan-shaped or circular or encircle fan-shaped.This kind of Structural Transformation mainly adapts to difform catalytic bed profile, facilitates the design of various situations.
13, originally be exclusively used on the airscoop shroud in the industry volatilizable organic pollutant purifying system of painting workshop and be provided with the explosion-proof relief mouth, improved the security of catalytic bed, prevent the generation of security incident.
14 heat exchangers of the present invention are plate type heat exchanger, heat exchanger is provided with entrance and the desorption outlet of supplying gas of supplying gas of catalysis gas inlet, the outlet of catalysis tail gas, the import of catalysis gas, the outlet of catalysis gas, desorption, can more high efficiencyly utilize heat energy, reduce the dependence to electric energy.
15, spray filter in the present invention comprises a tower body, a side lower part at tower body is made air inlet, air outlet is made on the tower body top of a side relative to air inlet, the first filter course is set respectively from bottom to up in tower body, the second filter course and demist layer, be evenly equipped with the bottom shower nozzle below the first filter course, be evenly equipped with the middle part shower nozzle between the first filter course and the second filter course, be evenly equipped with the top shower nozzle between the second filter course and demist layer, tower body air outlet one side is fixedly mounted with a filter, this filter air inlet is communicated with the tower body air outlet, this filter is provided with the filter air outlet, be horizontally disposed with the particle filter course in filter, the filter air outlet connects spark arrester by pipeline, this structure sprays the coating cloud wash solution by shower nozzle and forms umbrella interception paint coating cloud, by the bottom shower nozzle, three grades, middle part shower nozzle and top shower nozzle tackles and are removed and paint coating cloud, remove water smoke by the demist layer again and export pure industrial volatile organic pollutants, by the absorption blower fan, gas discharging up to standard is entered to atmosphere after adsorbing by adsorbent bed.
16, the first filter course of spray filter of the present invention comprises the foamed ceramics of full paving on filtering grid and filtering grid, the second filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid, the foamed ceramics completely spread on filtering grid in this structure is to have microcellular structure, must be through thering is the microcellular structure foamed ceramics when mist enters air inlet and makes progress by wind deflector, this micropore upper reaches the coating cloud wash solution, mist by the time will fully contact with the coating cloud wash solution, contribute to like this to remove the paint coating cloud.
In 17 the present invention, the bottom shower nozzle of spray filter, middle part shower nozzle, top shower nozzle are spiral nozzle, guarantee that like this coating cloud wash solution sprayed forms umbrella, effectively cover the gaseous mixture risen, effectively isolate the paint coating cloud, the first filter course below is provided with wind deflector, this wind deflector is corresponding with air inlet, and wind deflector is arc, contributes to air intake to reduce resistance.
18, the present invention has effectively improved the thermal efficiency of processing, reduce thermal losses, improve the recuperation of heat utilization rate, in catalytic bed during burning in desorption system, temperature is more even, efficiency of combustion and purifying rate have been improved, increased heat exchange and more rationally utilized heat energy, met the energy-saving and emission-reduction requirement, the gas temperature of input catalytic bed can effectively be controlled.
The accompanying drawing explanation
Fig. 1 is system connection diagram of the present invention;
Fig. 2 is catalytic bed structural representation of the present invention;
The right view that Fig. 3 is Fig. 2;
The A-A that Fig. 4 is Fig. 3 is to cutaway view;
The structural representation of the body of heater that Fig. 5 is catalytic bed of the present invention (omitting heater, heat-insulation layer, thermocouple and the kuppe of giving vent to anger);
The B-B that Fig. 6 is Fig. 5 is to cutaway view (omitting catalyst bracket and catalyst layer);
The top view that Fig. 7 is Fig. 5;
The upward view that Fig. 8 is Fig. 5;
The stereogram of the body of heater that Fig. 9 is catalytic bed of the present invention (omitting heater, heat-insulation layer, thermocouple, kuppe, catalyst bracket and catalyst layer);
Figure 10 is heat exchanger structure schematic diagram of the present invention;
The structural representation that Figure 11 is spray filter of the present invention;
The top view that Figure 12 is Figure 11;
Figure 13 is spray filter perspective view of the present invention;
The A-A that Figure 14 is Figure 13 is to cutaway view;
The tower body perspective view that Figure 15 is spray filter of the present invention.
The specific embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not determinate, can not limit protection scope of the present invention with this.
A kind of industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop, it comprises catalysis air intake heater 2, catalytic bed 1, catalysis blower fan 20, heat exchanger 3, adsorbent bed 10, absorption blower fan 18, spark arrester 7, spray filter 6, filter 8, desorption gas circulating fan 12, desorption gas recirculation heater 14 and adsorbent bed desorption heater 4, be provided with industrial volatile organic pollutants exhaust gas inlet 9 on adsorbent bed, purified gas outlet 17, desorption waste gas delivery outlet 16, desorption gas input port 5, desorption gas loop exit 19 and desorption gas loop head 11, this industrial volatile organic pollutants exhaust gas inlet connects a spark arrester by filter, this spark arrester connects a spray filter by pipeline, purified gas outlet connects an absorption blower fan by pipeline, and heat exchanger is provided with catalysis gas inlet 46, catalysis tail gas outlet 51, catalysis gas import 48, catalysis gas outlet 47, desorption entrance 50 and the desorption outlet 49 of supplying gas of supplying gas, the desorption gas loop exit connects desorption gas recirculation heater air inlet by pipeline, this desorption gas recirculation heater air outlet connects desorption gas circulating fan air inlet by pipeline, this desorption gas circulating fan air outlet connects the desorption gas loop head on adsorbent bed by pipeline, the desorption gas loop exit of heat exchanger and desorption gas loop head are connected on the pipeline between desorption gas recirculation heater and desorption gas circulating fan and by triple valve 13 and are controlled by pipeline respectively, the catalysis gas outlet of heat exchanger connects the catalysis gas inlet of heat exchanger by catalysis air intake heater and catalytic bed, the outlet of catalysis tail gas connects the desorption gas entrance of adsorbent bed by adsorbent bed desorption heater, the catalysis gas import of heat exchanger connects the desorption waste gas delivery outlet of adsorbent bed by the catalysis blower fan.Catalytic bed in the present invention comprises airscoop shroud 23, body of heater 25, air leaving cover 29, body of heater is arranged on support 31, the body of heater upper end is fixedly mounted with airscoop shroud, airscoop shroud import 21 is set on airscoop shroud, the body of heater lower end is fixedly mounted with air leaving cover, set out gas hood outlet 30 on air leaving cover, body of heater comprise body of heater peripheral board 42 with and the bottom plate 28 that is fixedly mounted with of the upper head plate 24 that is fixedly mounted with of upper end and its lower end, evenly be fixed with heat-insulation layer 36 at body of heater peripheral board outer wall, coaming plate 43 in one body of heater is set in the body of heater peripheral board, be arranged alternately air intake duct 32 and gas off-take 41 between coaming plate and body of heater peripheral board in body of heater, the import 44 of air intake duct is arranged on upper head plate, the outlet 40 of air intake duct is arranged between bottom plate and the interior coaming plate of body of heater, the import 33 of gas off-take is arranged between upper head plate and the interior coaming plate of body of heater, the outlet 45 of gas off-take is arranged on bottom plate, be provided with air inlet kuppe 34 on the upper head plate middle part of corresponding airscoop shroud import, be provided with combustion gas kuppe 35 on below the upper head plate middle part, be provided with catalytic bed heater 27 at air intake port in corresponding body of heater, be provided with the kuppe 39 of giving vent to anger below the bottom plate middle part of corresponding air leaving cover outlet, airscoop shroud connects the catalysis air intake heater, air leaving cover connects the catalysis gas inlet, the quantity of air intake duct and gas off-take is identical and evenly alternately be arranged in body of heater between coaming plate and body of heater peripheral board.Air intake duct can be not identical with the quantity of gas off-take yet, described be arranged in body of heater the air intake duct in opposite between coaming plate and body of heater peripheral board and air intake duct can be one by one corresponding or air intake duct and gas off-take corresponding one by one, air intake duct shown in the present embodiment accompanying drawing 8 and gas off-take quantity are 20 and evenly alternately be arranged in body of heater between coaming plate and body of heater peripheral board, adopt air intake duct and gas off-take corresponding mode one by one, the air intake duct sectional area can equal the gas off-take sectional area, the air intake duct sectional area also can be greater than the gas off-take sectional area, the air intake duct sectional area can also be less than the gas off-take sectional area.For the air intake duct in energy-saving and cost-reducing this catalytic bed furnace binding adopts rectangular steel pipe and is arranged in body of heater peripheral board and body of heater between coaming plate, gas off-take is surrounded by coaming plate in air intake duct rectangle steel tube wall, body of heater peripheral board and the body of heater of its both sides, body of heater peripheral board cross section is rectangle or square or circular, in body of heater, the coaming plate cross section is rectangle or square or circular, the air intake duct cross section is rectangle or square or fan-shaped or circular or encircle fan-shapedly, and the gas off-take cross section is rectangle or square or fan-shaped or circular or encircle fan-shaped.The air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and the kuppe of giving vent to anger are inverted positive rectangular pyramid structure, be provided with catalyst bracket 38 in the body of heater of catalytic bed heater top, catalyst layer 37 is installed on catalyst bracket, this catalytic bed heater is the electric heating tube group, electric heating tube quantity can be determined according to actual conditions, be provided with explosion-proof relief mouth 22 on airscoop shroud, the adsorbent bed temperature sensor is installed on adsorbent bed, adsorbent bed concentration sensor 15 and differential manometer, Tube Temperature Sensor and pipeline concentration sensor are installed on pipeline, heat exchanger is plate type heat exchanger.Thermocouple 26 is installed on sidewall of the furnace body.In the present embodiment, the quantity of thermocouple is three, is packed in respectively the San Ge position, upper, middle and lower of sidewall of the furnace body.Catalytic bed VOCs gas in use enters through air inlet kuppe gas uniform and flows to the Fighter Inlet upper head plate from the import of airscoop shroud, arrive catalytic bed body of heater below by inlet duct flow, meeting bottom plate stops to turn back and enters in the catalytic bed body of heater, aperture through heater and cat ceramic honeycomb substrate is burnt, the combustion gas kuppe that gas after burning meets the inversion rectangular pyramid structure below end plate evenly enters the air intake duct rectangle steel tube wall by the gas off-take both sides, the gas off-take that in body of heater peripheral board and body of heater, coaming plate surrounds, evenly flow out the air leaving cover outlet from the gas off-take outlet through the kuppe of giving vent to anger.
Spray filter in the present invention comprises a tower body 54, a side lower part at tower body is made air inlet 56, air outlet 59 is made on the tower body top of a side relative to air inlet, it arranges respectively from bottom to up the first filter course 64 in tower body, the second filter course 62 and demist layer 60, the demist layer is demister, this demister forms three-legged structure, be evenly equipped with bottom shower nozzle 67 below the first filter course, be evenly equipped with middle part shower nozzle 63 between the first filter course and the second filter course, be evenly equipped with top shower nozzle 61 between the second filter course and demist layer, tower body air outlet one side is fixedly mounted with a filter 53, this filter air inlet is communicated with the tower body air outlet, this filter is provided with air outlet 52, this filter air outlet connects spark arrester by pipeline, be horizontally disposed with particle filter course 57 in filter, filter endoparticle thing filter course below is provided with drainage plate 58, the bottom shower nozzle, the middle part shower nozzle, the top shower nozzle is spiral nozzle, the liquid of this spiral nozzle ejection can form umbrella, area coverage is larger, the first filter course below is provided with wind deflector 65, this wind deflector is corresponding with air inlet, wind deflector is arc, blow more stable, the tower body bottom is provided with aqua storage tank 66, the aqua storage tank bottom is provided with discharge outlet 55, the first filter course comprises the foamed ceramics 70 of full paving on filtering grid 69 and filtering grid, the second filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid, supporting clapboard 68 all is installed between the first filter course and the second filter course and at the second filter course between the demist layer.In use, first open the sprinkling that shower nozzle carries out the coating cloud wash solution before air intake, injected water in the microcellular structure that the foamed ceramics of full paving on filtering grid is had, after the coating cloud wash solution that spiral nozzle sprays forms umbrella, pass into the gaseous mixture containing the industrial volatile organic pollutants of paint coating cloud, the paint coating cloud is respectively by the bottom shower nozzle, be abound with foamed ceramics on the filtering grid of the first filter course and its, the middle part shower nozzle, be abound with foamed ceramics on the filtering grid of the second filter course and its, the dissolving of the coating cloud wash solution of top shower nozzle, can effectively remove the paint coating cloud, pure industrial volatile organic pollutants enters filter after demister, through the filtration of particle is directly sent into to the adsorbent bed adsorption treatment from filter air outlet of the present invention, the gas of processing is by the direct safety dumping of absorption blower fan.
Actual motion compliance test result of the present invention: this new catalytic pool furnace body structure in actual use, after conventional preheating, passes into VOCs gas, after catalytic combustion occurs, cuts off electrical heating.Within the VOCs gas concentration meets the period of minimum ignition concentration, realize self-sustaining burning fully, without any additional auxiliary thermal source, the catalyticing combustion process catalytic bed temperature short time reaches 650 ℃, most time maintains between 400 ℃-500 ℃, and flameholding, fluctuate less.The regional temperature instrumentation reading in three of catalytic bed upper, middle and lower approaches, and uniformity of temperature profile is described, exit gas detects, and the VOCs purifying rate is not less than 98%, meets the relevant national standard requirement fully.
While originally being exclusively used in the industry volatilizable organic pollutant purifying system work of painting workshop, spray filter is gone out the paint coating cloud in industrial volatile organic pollutants, pure industrial volatile organic pollutants enter adsorbent bed absorption saturated after, start to carry out the desorption circulation and improve adsorbent bed desorption output concentration, after reaching the catalytic bed burning concentration, control the material got off to catalytic bed output desorption by Self controlling valve, through catalytic bed burning rear portion clean gas, directly discharge, another part clean gas is supplied with the adsorbent bed desorption by circulating line and is used, heat energy in system is recycled by heat exchanger, at utmost reduce energy consumption, especially by various heater opening times in effectively minimizing system of heat exchanger energy transmission, reach the purpose of whole system self-sustaining burning.
Claims (10)
1. an industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop, is characterized in that: comprise the catalysis air intake heater, catalytic bed, the catalysis blower fan, heat exchanger, adsorbent bed, the absorption blower fan, spray filter, spark arrester, filter, the desorption gas circulating fan, desorption gas recirculation heater and adsorbent bed desorption heater, be provided with the industrial volatile organic pollutants exhaust gas inlet on adsorbent bed, purified gas outlet, desorption waste gas delivery outlet, the desorption gas input port, desorption gas loop exit and desorption gas loop head, this industrial volatile organic pollutants exhaust gas inlet connects a spark arrester by filter, this spark arrester connects a spray filter by pipeline, purified gas outlet connects an absorption blower fan by pipeline, and heat exchanger is provided with the catalysis gas inlet, the outlet of catalysis tail gas, the import of catalysis gas, the outlet of catalysis gas, desorption entrance and the desorption outlet of supplying gas of supplying gas, the desorption gas loop exit connects desorption gas recirculation heater air inlet by pipeline, this desorption gas recirculation heater air outlet connects desorption gas circulating fan air inlet by pipeline, this desorption gas circulating fan air outlet connects the desorption gas loop head on adsorbent bed by pipeline, the desorption gas loop exit of heat exchanger and desorption gas loop head are connected on the pipeline between desorption gas recirculation heater and desorption gas circulating fan by pipeline respectively, the catalysis gas outlet of heat exchanger connects the catalysis gas inlet of heat exchanger by catalysis air intake heater and catalytic bed, the outlet of catalysis tail gas connects the desorption gas entrance of adsorbent bed by adsorbent bed desorption heater, the catalysis gas import of heat exchanger connects the desorption waste gas delivery outlet of adsorbent bed by the catalysis blower fan.
2. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 1, it is characterized in that: described catalytic bed comprises airscoop shroud, body of heater, air leaving cover, the body of heater upper end is fixedly mounted with airscoop shroud, the body of heater lower end is fixedly mounted with air leaving cover, body of heater comprise the body of heater peripheral board with and the bottom plate that is fixedly mounted with of the upper head plate that is fixedly mounted with of upper end and its lower end, evenly be fixed with heat-insulation layer at body of heater peripheral board outer wall, coaming plate in one body of heater is set in the body of heater peripheral board, be arranged alternately air intake duct and gas off-take between coaming plate and body of heater peripheral board in body of heater, the import of air intake duct is arranged on upper head plate, the outlet of air intake duct is arranged between bottom plate and the interior coaming plate of body of heater, the import of gas off-take is arranged between upper head plate and the interior coaming plate of body of heater, the outlet of gas off-take is arranged on bottom plate, be provided with the air inlet kuppe on the upper head plate middle part of corresponding airscoop shroud import, be provided with the combustion gas kuppe on below the upper head plate middle part, be provided with the catalytic bed heater at air intake port in corresponding body of heater, be provided with the kuppe of giving vent to anger below the bottom plate middle part of corresponding air leaving cover outlet, airscoop shroud connects the catalysis air intake heater, air leaving cover connects the catalysis gas inlet.
3. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 2 is characterized in that: the quantity of described air intake duct and gas off-take is identical and evenly alternately be arranged in body of heater between coaming plate and body of heater peripheral board.
4. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 2, it is characterized in that: described air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and the kuppe of giving vent to anger are inverted positive rectangular pyramid structure.
5. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 2, it is characterized in that: described air intake duct adopt rectangular steel pipe and be arranged on the body of heater peripheral board with the interior coaming plate of body of heater between, gas off-take is surrounded by coaming plate in air intake duct rectangle steel tube wall, body of heater peripheral board and the body of heater of its both sides.
6. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 2, is characterized in that: be provided with catalyst bracket in the body of heater of described catalytic bed heater top, catalyst layer is installed on catalyst bracket.
7. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 2, is characterized in that: be provided with the explosion-proof relief mouth on described airscoop shroud.
8. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 1, it is characterized in that: described spray filter comprises a tower body, a side lower part at tower body is made air inlet, air outlet is made on the tower body top of a side relative to air inlet, the first filter course is set respectively from bottom to up in tower body, the second filter course and demist layer, be evenly equipped with the bottom shower nozzle below the first filter course, be evenly equipped with the middle part shower nozzle between the first filter course and the second filter course, be evenly equipped with the top shower nozzle between the second filter course and demist layer, tower body air outlet one side is fixedly mounted with a filter, this filter air inlet is communicated with the tower body air outlet, this filter is provided with the filter air outlet, be horizontally disposed with the particle filter course in filter, the filter air outlet connects spark arrester by pipeline.
9. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 8, it is characterized in that: described the first filter course below is provided with arc wind waveguide plate, this arc wind waveguide plate is corresponding with air inlet, the tower body bottom is provided with aqua storage tank, and the aqua storage tank bottom is provided with discharge outlet.
10. the industry volatilizable organic pollutant purifying system that is exclusively used in painting workshop according to claim 8, it is characterized in that: described the first filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid, and the second filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid.
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| CN106000006A (en) * | 2016-06-30 | 2016-10-12 | 无锡康柏斯机械科技有限公司 | Gas purifying device for enamelling furnace |
| CN106039934A (en) * | 2016-06-30 | 2016-10-26 | 无锡康柏斯机械科技有限公司 | Filtering device for toxic gas of enamelling furnace |
| CN106362583A (en) * | 2015-07-24 | 2017-02-01 | 中船重工海博威（江苏）科技发展有限公司 | Catalytic oxidation system applied to industrial exhaust gas treatment |
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| WO2021258803A1 (en) * | 2020-06-24 | 2021-12-30 | 湖州南丰机械制造有限公司 | Dust treatment system for casting workshop |
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| CN103480226B (en) | 2015-05-27 |
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