CN103480226B - Industrial volatile organic pollutant purifying system dedicated to painting workshops - Google Patents

Industrial volatile organic pollutant purifying system dedicated to painting workshops Download PDF

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Publication number
CN103480226B
CN103480226B CN201310454167.0A CN201310454167A CN103480226B CN 103480226 B CN103480226 B CN 103480226B CN 201310454167 A CN201310454167 A CN 201310454167A CN 103480226 B CN103480226 B CN 103480226B
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China
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heater
gas
desorption
outlet
filter
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CN103480226A (en
Inventor
朱殿兴
刘光明
冯正
赵崇光
谷德明
刘迎春
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Tianjin Saizhi Science And Technology Development Co Ltd
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Tianjin Saizhi Science And Technology Development Co Ltd
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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

Be exclusively used in the industry volatilizable organic pollutant purifying system of painting workshop
Technical field
The invention belongs to cleaning system field, especially a kind of industry volatilizable organic pollutant purifying system being exclusively used in painting workshop.
Background technology
Along with the raising of people's living standard, people's environmental pollution is more and more paid attention to, this word of the PM2.5 of nearest appearance is exactly one of index of atmosphere pollution, and industrial volatile organic pollutants is to one of maximum pollutant of people's body harm in PM2.5, in the cleaning system of current process industrial volatile organic pollutants, capital equipment comprises adsorbent bed and catalytic bed, catalytic bed makes 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 realize catalytic combustion, but there are the following problems: 1, the thermal losses of catalytic bed furnace binding own is large, recuperation of heat utilization ratio is lower, 2, non-uniform temperature in catalytic bed furnace binding, overall high in centre temperature, edge temperature is low, reduce industrial volatile organic pollutants efficiency of combustion, affect the purifying rate of catalytic combustion, 3, energy-saving effect is poor, do not meet energy-saving and emission-reduction requirement, in desorption process, adsorbent bed desorption gas concentration can not well control in addition, affect catalytic combustion efficiency and heat utilization rate, and often mix paint coating cloud at some paint spraying workshop industrial volatile organic pollutants, painting coating cloud when adsorbent bed adsorbs can be attached on the sorbing material in adsorbent bed, cause adsorbent bed cisco unity malfunction, reduce purified treatment efficiency, improve 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 being exclusively used in painting workshop is provided, this cleaning system effectively improves the thermal efficiency of process, reduce thermal losses, improve recuperation of heat utilization rate, in catalytic bed during burning in desorption system, temperature is more even, improve efficiency of combustion and purifying rate, add heat exchange Appropriate application heat energy more, meet energy-saving and emission-reduction requirement, the gas temperature of input catalytic bed can effectively control.
The present invention solves its technical problem and is achieved through the following technical solutions:
Be exclusively used in an industry volatilizable organic pollutant purifying system for painting workshop, it comprises catalysis air intake heater, catalytic bed, catalysis blower fan, heat exchanger, adsorbent bed, absorption blower fan, spray filter, spark arrester, filter, desorption gas circulating fan, desorption gas recirculation heater and adsorbent bed desorption heater, adsorbent bed is provided with industrial volatile organic pollutants exhaust gas inlet, purified gas outlet, desorption waste gas delivery outlet, 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 catalytic exhaust entrance, catalytic exhaust exports, the import of catalysis gas, catalysis gas exports, supply gas entrance and desorption of desorption is supplied gas outlet, 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 respectively by pipeline, the catalysis gas outlet of heat exchanger connects the catalytic exhaust entrance of heat exchanger by catalysis air intake heater and catalytic bed, catalytic exhaust outlet 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 catalysis blower fan.
And, described catalytic bed comprises airscoop shroud, body of heater, air leaving cover, body of heater upper end is fixedly mounted with airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, body of heater comprises upper head plate that body of heater peripheral board and its upper end be fixedly mounted with and the bottom plate that its lower end is fixedly mounted with, evenly heat-insulation layer is fixed with at body of heater peripheral board outer wall, coaming plate in one body of heater is set in body of heater peripheral board, air intake duct and gas off-take is arranged alternately 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 to be arranged in bottom plate and body of heater between coaming plate, the import of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet of gas off-take is arranged on bottom plate, air inlet kuppe is provided with above in the middle part of the upper head plate of corresponding airscoop shroud import, combustion gas kuppe is provided with on below in the middle part of upper head plate, catalytic bed heater is provided with in the body of heater that air intake port is corresponding, kuppe of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, airscoop shroud connects catalysis air intake heater, air leaving cover connects catalytic exhaust entrance.
And described air intake duct is identical with the quantity of gas off-take and to be evenly alternately 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 kuppe of giving vent to anger are inverted positive rectangular pyramid structure.
And described air intake duct 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 the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater.
And, be provided with catalyst bracket in the body of heater above described catalytic bed heater, on catalyst bracket, catalyst layer be installed.
And, described airscoop shroud is provided with explosion-proof relief mouth.
And, described spray filter comprises a tower body, air inlet is made at a side lower part of tower body, air outlet is made on the tower body top of side relative to air inlet, in tower body, the first filter course is set respectively from bottom to up, second filter course and demist layer, bottom shower nozzle is evenly equipped with below the first filter course, middle part shower nozzle is evenly equipped with between the first filter course and the second filter course, top shower nozzle is evenly equipped with between the second filter course and demist layer, tower body air outlet side is fixedly mounted with a filter, this filter air inlet is communicated with tower body air outlet, this filter is provided with filter air outlet, particle filter course has been horizontally disposed with in filter, filter air outlet connects spark arrester by pipeline.
And be provided with arc wind waveguide plate below the first described filter course, this arc wind waveguide plate is corresponding with air inlet, and tower body bottom is provided with aqua storage tank, is provided with discharge outlet bottom aqua storage tank.
And the first described 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 adsorbent bed is provided with industrial volatile organic pollutants exhaust gas inlet, purified gas outlet, desorption waste gas delivery outlet, 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 catalytic exhaust entrance, catalytic exhaust exports, the import of catalysis gas, catalysis gas exports, supply gas entrance and desorption of desorption is supplied gas outlet, 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 respectively by pipeline, the catalysis gas outlet of heat exchanger connects the catalytic exhaust entrance of heat exchanger by catalysis air intake heater and catalytic bed, catalytic exhaust outlet 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 catalysis blower fan, this structure achieves the process imagine introducing catalytic bed when gas industry volatile organic pollutants concentration reaches self-sustaining burning concentration in desorption heating circulation system again, make the catalytic bed after preheating can enter self-sustaining burning state fast, the Thermal feedback that catalytic combustion is produced is enough to maintain catalytic bed temperature, and make plate type heat exchanger obtain enough thermals source, heat energy is provided for adsorbent bed continues desorption, and carry out desorption preheating for next adsorbent bed simultaneously, reach design conditions requirement, effectively play a role.For reducing auxiliary heating, saving energy consumption creates conditions.
2, originally be exclusively used in heat exchanger in the industry volatilizable organic pollutant purifying system of painting workshop and be provided with catalytic exhaust entrance, catalytic exhaust exports, the import of catalysis gas, catalysis gas exports, supply gas entrance and desorption of desorption is supplied gas outlet, 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, desorption supply gas entrance connect pipeline be communicated on the pipeline between desorption gas recirculation heater and desorption gas circulating fan by triple valve, the catalytic bed catalytic exhaust of self-sustaining burning can be sent into plate type heat exchanger and reach industrial volatile organic pollutants desorption temperature in adsorbent bed by heat exchange by this structure, even if electric heater can be closed to save electric energy, especially for multiple adsorbent bed be connected in cleaning system circulate desorption time, adsorbent bed exports concentration can meet catalytic bed self-sustaining burning concentration, during self desorption, recyclegas temperature can be met by plate type heat exchanger, achieve and only use electric heater in initial heating, all the other times can close the self-holding heat supply that electric heater realizes whole cleaning system, greatly save electric energy.
3, be originally exclusively used in adsorbent beds in the industry volatilizable organic pollutant purifying system of painting workshop again the industrial volatile organic pollutants after desorption to be incorporated into catalytic bed to catalytic bed self-sustaining burning concentration and to carry out catalytic combustion, ensure that catalytic bed temperature, prevent and into a gas, " blast-cold " of catalytic bed is acted on, effectively prevent 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, body of heater upper end is fixedly mounted with airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, body of heater comprises upper head plate that body of heater peripheral board and its upper end be fixedly mounted with and the bottom plate that its lower end is fixedly mounted with, evenly heat-insulation layer is fixed with at body of heater peripheral board outer wall, coaming plate in one body of heater is set in body of heater peripheral board, air intake duct and gas off-take is arranged alternately 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 to be arranged in bottom plate and body of heater between coaming plate, the import of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet of gas off-take is arranged on bottom plate, air inlet kuppe is provided with above in the middle part of the upper head plate of corresponding airscoop shroud import, combustion gas kuppe is provided with on below in the middle part of upper head plate, catalytic bed heater is provided with in the body of heater that air intake port is corresponding, kuppe of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, airscoop shroud connects catalysis air intake heater, air leaving cover connects catalytic exhaust entrance, this kind of over-over mode arranges air intake duct and gas off-take can realize the even air inlet of catalytic bed bottom of furnace body surrounding, thus make the industrial volatile organic pollutants entering body of heater be attracted to the surface of cat ceramic carrier more uniformly, make body of heater combustion even, high-temperature gas after burning refluxes evenly downwards by gas off-take, make bottom of furnace body temperature-compensating even, overcome catalytic bed body of heater centre temperature in prior art high, the shortcoming that temperature low heating in edge is uneven, improve efficiency of combustion and purifying rate, catalytic bed catalytic combustion heat can be utilized further through heat exchanger, realize energy-saving and emission-reduction.
5, originally the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop in the middle part of the upper head plate of corresponding airscoop shroud import above be provided with air inlet kuppe, combustion gas kuppe is provided with on below in the middle part of upper head plate, heater is provided with in the body of heater that air intake port is corresponding, this heater is packed on body of heater peripheral board, kuppe of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and kuppe of giving vent to anger are inverted positive rectangular pyramid structure, this kind of structural design can effectively realize even air inlet, homogenous combustion, burned VOCs gas uniform enters gas off-take, effective raising catalytic bed edge temperature, evenly discharge after entering into air leaving cover, high burning efficiency is realized and purifying rate lays the first stone for furnace binding.
6, be originally exclusively used in front end in the industry volatilizable organic pollutant purifying system of painting workshop to be provided with catalysis air intake heater in catalytic bed, to be provided with catalytic bed heater, it is fast that this kind arranges firing rate, efficiency is high, be arranged on air intake port position, be conducive to Thorough combustion, 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 being originally exclusively used in painting workshop adopts over-over mode to arrange air intake duct and gas off-take, effectively performs to ultimate attainment by the recycling of catalytic combustion heat.Catalyst combustion reaction heat is utilized to carry out preheating to the gas entering catalytic bed.This warm belongs to countercurrent flow, 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, belongs to following current heat exchange for the air-flow in catalytic bed, gas in air intake duct is heated in three directions, and make heat exchange unit to greatest extent near thermal source, reduce heat loss, improve heat exchange efficiency, to ensure that catalytic bed reaches catalysis initiation temperature at the stylish VOCs gas entered of normal combustion, contribute to maintaining that catalyticing combustion process is stable to carry out, reduce the dependence even broken away from auxiliary electrical heater.
8, the high-temperature tail gas of catalytic combustion generation in the industry volatilizable organic pollutant purifying system of painting workshop is originally exclusively used in along gas off-take, namely body of heater wall is back to the process of catalytic bed lower part outlet, back feeding heating is carried out to catalytic bed fringe region, contribute to the maintenance of catalytic bed bulk temperature with even, catalytic combustion is impelled to be evenly distributed in whole catalytic bed cross section, improve catalytic combustion purifying rate, and form benign cycle thus, be beneficial to catalytic combustion and carry out continually and steadily.
9, be originally exclusively used in the air inlet kuppe that in the industry volatilizable organic pollutant purifying system of painting workshop, upper head plate arranged and combustion gas kuppe is design for disassembly, facilitate the replacing of catalytic bed body of heater inner catalyst, improve production efficiency.
10, being originally exclusively used in air intake duct in the industry volatilizable organic pollutant purifying system of painting workshop can be different from the quantity of gas off-take, also can be identical, the long-pending outlet channel cross-sections that can equal of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that also can be greater than of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that can also be less than of inlet channel cross-sectional amasss, determine the cross-section relation between different air intake ducts and 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, to be originally exclusively used in the industry volatilizable organic pollutant purifying system of painting workshop air intake duct adopt rectangular steel pipe and to be arranged in body of heater peripheral board and body of heater between coaming plate, gas off-take is surrounded by coaming plate in the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater, this kind of patten's design can effectively reduce steel use amount, reduce construction costs, for energy-saving and cost-reducing new design, reach processing requirements completely.
12, be originally exclusively used in body of heater peripheral board cross section in the industry volatilizable organic pollutant purifying system of painting workshop be rectangle or square or circular, in body of heater coaming plate cross section be rectangle or square or circular, inlet channel cross-sectional is rectangle or square or fan-shaped or circular or ring is fan-shaped, and outlet channel cross-sections is rectangle or square or fan-shaped or circular or ring is fan-shaped.This kind of Structural Transformation mainly adapts to difform catalytic bed profile, facilitates the design of various situation.
13, be originally exclusively used on the airscoop shroud in the industry volatilizable organic pollutant purifying system of painting workshop and be provided with explosion-proof relief mouth, improve the security of catalytic bed, prevent the generation of security incident.
14 heat exchangers of the present invention are plate type heat exchanger, outlet that heat exchanger is provided with catalytic exhaust entrance, catalytic exhaust outlet, the import of catalysis gas, catalysis gas exports, desorption supplies gas entrance and desorption is supplied gas, more high efficiencyly can utilize heat energy, reduce the dependence to electric energy.
15, spray filter in the present invention comprises a tower body, air inlet is made at a side lower part of tower body, air outlet is made on the tower body top of side relative to air inlet, in tower body, the first filter course is set respectively from bottom to up, second filter course and demist layer, bottom shower nozzle is evenly equipped with below the first filter course, middle part shower nozzle is evenly equipped with between the first filter course and the second filter course, top shower nozzle is evenly equipped with between the second filter course and demist layer, tower body air outlet side is fixedly mounted with a filter, this filter air inlet is communicated with tower body air outlet, this filter is provided with filter air outlet, particle filter course has been horizontally disposed with in filter, filter air outlet connects spark arrester by pipeline, this structure forms umbrella interception paint coating cloud by shower nozzle ejection coating cloud wash solution, by bottom shower nozzle, middle part shower nozzle and three grades, top shower nozzle are tackled and are removed paint coating cloud, pure industrial volatile organic pollutants is exported again by demist layer removing water smoke, by absorption blower fan, gas discharging up to standard is entered air after being adsorbed 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, second filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid, in this structure, on filtering grid, the foamed ceramics of full paving has microcellular structure, mist enter air inlet by wind deflector upwards time have to pass through there is microcellular structure foamed ceramics, this micropore upper reaches coating cloud wash solution, mist by time fully will contact with coating cloud wash solution, contribute to like this removing 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, such coating cloud wash solution ensureing to spray forms umbrella, effective gaseous mixture covering rising, effectively isolate paint coating cloud, wind deflector is provided with below first filter course, this wind deflector is corresponding with air inlet, and wind deflector is arc, contributes to air intake and reduces resistance.
18, the present invention effectively improves the thermal efficiency of process, reduce thermal losses, improve recuperation of heat utilization rate, in catalytic bed during burning in desorption system, temperature is more even, improve efficiency of combustion and purifying rate, add heat exchange Appropriate application heat energy more, meet energy-saving and emission-reduction requirement, the gas temperature of input catalytic bed can effectively control.
Accompanying drawing explanation
Fig. 1 is system connection diagram of the present invention;
Fig. 2 is catalytic bed structural representation of the present invention;
Fig. 3 is the right view of Fig. 2;
Fig. 4 is that the A-A of Fig. 3 is to sectional view;
Fig. 5 is the structural representation (omitting heater, heat-insulation layer, thermocouple and kuppe of giving vent to anger) of the body of heater of catalytic bed of the present invention;
Fig. 6 is that the B-B of Fig. 5 is to sectional view (omitting catalyst bracket and catalyst layer);
Fig. 7 is the top view of Fig. 5;
Fig. 8 is the upward view of Fig. 5;
Fig. 9 is the stereogram (omitting heater, heat-insulation layer, thermocouple, kuppe, catalyst bracket and catalyst layer) of the body of heater of catalytic bed of the present invention;
Figure 10 is heat exchanger structure schematic diagram of the present invention;
Figure 11 is the structural representation of spray filter of the present invention;
Figure 12 is the top view of Figure 11;
Figure 13 is spray filter perspective view of the present invention;
Figure 14 is that the A-A of Figure 13 is to sectional view;
Figure 15 is the tower body perspective view of spray filter of the present invention.
Detailed description of the invention
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.
Be exclusively used in an industry volatilizable organic pollutant purifying system for 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, adsorbent bed is provided with industrial volatile organic pollutants exhaust gas inlet 9, 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 catalytic exhaust entrance 46, catalytic exhaust outlet 51, catalysis gas import 48, catalysis gas outlet 47, supply gas entrance 50 and desorption of desorption is supplied gas outlet 49, 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 to be connected on the pipeline between desorption gas recirculation heater and desorption gas circulating fan respectively by pipeline and to be controlled by triple valve 13, the catalysis gas outlet of heat exchanger connects the catalytic exhaust entrance of heat exchanger by catalysis air intake heater and catalytic bed, catalytic exhaust outlet 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 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, body of heater upper end is fixedly mounted with airscoop shroud, airscoop shroud is arranged airscoop shroud import 21, body of heater lower end is fixedly mounted with air leaving cover, air leaving cover sets out gas hood outlet 30, body of heater comprises upper head plate 24 that body of heater peripheral board 42 and its upper end be fixedly mounted with and the bottom plate 28 that its lower end is fixedly mounted with, heat-insulation layer 36 is evenly fixed with at body of heater peripheral board outer wall, coaming plate 43 in one body of heater is set in body of heater peripheral board, air intake duct 32 and gas off-take 41 is arranged alternately 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 to be arranged in bottom plate and body of heater between coaming plate, the import 33 of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet 45 of gas off-take is arranged on bottom plate, air inlet kuppe 34 is provided with above in the middle part of the upper head plate of corresponding airscoop shroud import, combustion gas kuppe 35 is provided with on below in the middle part of upper head plate, catalytic bed heater 27 is provided with in the body of heater that air intake port is corresponding, kuppe 39 of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, airscoop shroud connects catalysis air intake heater, air leaving cover connects catalytic exhaust entrance, air intake duct is identical with the quantity of gas off-take and to be evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board.Air intake duct also can not be identical with the quantity of gas off-take, described be arranged on the air intake duct being in opposite in body of heater between coaming plate with body of heater peripheral board and air intake duct can 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 are evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board, adopt the mode that air intake duct is corresponding one by one with gas off-take, the long-pending outlet channel cross-sections that can equal of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that also can be greater than of inlet channel cross-sectional amasss, the long-pending outlet channel cross-sections that can also be less than of inlet channel cross-sectional amasss.Adopt rectangular steel pipe in order to the air intake duct in energy-saving and cost-reducing this catalytic bed furnace binding and to be arranged in body of heater peripheral board and body of heater between coaming plate, gas off-take is surrounded by coaming plate in the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater, body of heater peripheral board cross section be rectangle or square or circular, in body of heater coaming plate cross section be rectangle or square or circular, inlet channel cross-sectional is rectangle or square or fan-shaped or circular or ring is fan-shaped, and outlet channel cross-sections is rectangle or square or fan-shaped or circular or ring is fan-shaped.Air inlet kuppe is positive rectangular pyramid structure, combustion gas kuppe and kuppe of giving vent to anger are inverted positive rectangular pyramid structure, catalyst bracket 38 is provided with in body of heater above catalytic bed heater, catalyst layer 37 is installed on catalyst bracket, this catalytic bed heater is electric heating tube group, electric heating tube quantity can be determined according to actual conditions, airscoop shroud is provided with explosion-proof relief mouth 22, adsorbent bed is provided with adsorbent bed temperature sensor, adsorbent bed concentration sensor 15 and differential manometer, pipeline is provided with Tube Temperature Sensor and pipeline concentration sensor, heat exchanger is plate type heat exchanger.Sidewall of the furnace body is provided with thermocouple 26.In the present embodiment, the quantity of thermocouple is three, is packed in the position, three, upper, middle and lower of sidewall of the furnace body respectively.Catalytic bed in use VOCs gas passes into air inlet kuppe gas uniform from the import of airscoop shroud and flows to Fighter Inlet upper head plate, below inlet duct flow to catalytic bed body of heater, the stop of chance bottom plate is turned back and is entered in catalytic bed body of heater, aperture through heater and cat ceramic honeycomb substrate burns, the combustion gas kuppe of the inversion rectangular pyramid structure that the gas after burning meets below end plate evenly enters by the air intake duct rectangle steel tube wall of gas off-take both sides, the gas off-take that in body of heater peripheral board and body of heater, coaming plate surrounds, air leaving cover outlet is evenly flowed out through kuppe of giving vent to anger from gas off-take outlet.
Spray filter in the present invention comprises a tower body 54, air inlet 56 is made at a side lower part of tower body, air outlet 59 is made on the tower body top of side relative to air inlet, it arranges the first filter course 64 from bottom to up respectively in tower body, second filter course 62 and demist layer 60, demist layer is demister, this demister forms three-legged structure, bottom shower nozzle 67 is evenly equipped with below the first filter course, middle part shower nozzle 63 is evenly equipped with between the first filter course and the second filter course, top shower nozzle 61 is evenly equipped with between the second filter course and demist layer, tower body air outlet side is fixedly mounted with a filter 53, this filter air inlet is communicated with tower body air outlet, this filter is provided with air outlet 52, this filter air outlet connects spark arrester by pipeline, particle filter course 57 has been horizontally disposed with in filter, drainage plate 58 is provided with below filter endoparticle thing filter course, bottom shower nozzle, middle part shower nozzle, top shower nozzle is spiral nozzle, the liquid of this spiral nozzle ejection can form umbrella, area coverage is larger, wind deflector 65 is provided with below first filter course, this wind deflector is corresponding with air inlet, wind deflector is arc, blow more stable, tower body bottom is provided with aqua storage tank 66, discharge outlet 55 is provided with bottom aqua storage tank, first filter course comprises the foamed ceramics 70 of full paving on filtering grid 69 and filtering grid, second filter course comprises the foamed ceramics of full paving on filtering grid and filtering grid, between the first filter course and the second filter course and at the second filter course, between demist layer, supporting clapboard 68 is all installed.In use, the sprinkling that shower nozzle carries out coating cloud wash solution is first opened before air intake, water is injected in the microcellular structure that the foamed ceramics of paving full on filtering grid is had, after the coating cloud wash solution that spiral nozzle sprays forms umbrella, pass into the gaseous mixture of the industrial volatile organic pollutants containing paint coating cloud, paint coating cloud is respectively by bottom shower nozzle, the filtering grid of the first filter course and its on be abound with foamed ceramics, middle part shower nozzle, the filtering grid of the second filter course and its on be abound with foamed ceramics, the dissolving of the coating cloud wash solution of top shower nozzle, can effectively remove paint coating cloud, pure industrial volatile organic pollutants enters filter after demister, through directly sending into adsorbent bed adsorption treatment to the filtration of particle from filter air outlet of the present invention, the gas processed 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 period that VOCs gas concentration meets minimum ignition concentration, realize self-sustaining burning completely, without any additional auxiliary thermal source, the catalyticing combustion process catalytic bed temperature short time reaches 650 DEG C, most time maintains between 400 DEG C-500 DEG C, flameholding, fluctuates less.Three, catalytic bed upper, middle and lower region temperature instrumentation reading is close, and uniformity of temperature profile is described, exit gas detects, and VOCs purifying rate is not less than 98%, meets relevant national standard requirement completely.
When being originally exclusively used in the industry volatilizable organic pollutant purifying system work of painting workshop, spray filter goes 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 de-adsorption cycle and improve adsorbent bed desorption output concentration, after reaching catalytic bed burning concentration, the material got off to catalytic bed output desorption is controlled by Self controlling valve, directly discharge through catalytic bed burning rear portion clean gas, another part clean gas is used by circulating line supply adsorbent bed desorption, heat energy in system is recycled by heat exchanger, at utmost reduce energy consumption, can various heater opening times in effectively minimizing system especially by heat exchanger energy transferring, reach the object of whole system self-sustaining burning.

Claims (10)

1. be exclusively used in an industry volatilizable organic pollutant purifying system for painting workshop, it is characterized in that: comprise catalysis air intake heater, catalytic bed, catalysis blower fan, heat exchanger, adsorbent bed, absorption blower fan, spray filter, spark arrester, filter, desorption gas circulating fan, desorption gas recirculation heater and adsorbent bed desorption heater, adsorbent bed is provided with industrial volatile organic pollutants exhaust gas inlet, purified gas outlet, desorption waste gas delivery outlet, 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 catalytic exhaust entrance, catalytic exhaust exports, the import of catalysis gas, catalysis gas exports, supply gas entrance and desorption of desorption is supplied gas outlet, 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 respectively by pipeline, the catalysis gas outlet of heat exchanger connects the catalytic exhaust entrance of heat exchanger by catalysis air intake heater and catalytic bed, catalytic exhaust outlet 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 catalysis blower fan.
2. the industry volatilizable organic pollutant purifying system being 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, body of heater upper end is fixedly mounted with airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, body of heater comprises upper head plate that body of heater peripheral board and its upper end be fixedly mounted with and the bottom plate that its lower end is fixedly mounted with, evenly heat-insulation layer is fixed with at body of heater peripheral board outer wall, coaming plate in one body of heater is set in body of heater peripheral board, air intake duct and gas off-take is arranged alternately 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 to be arranged in bottom plate and body of heater between coaming plate, the import of gas off-take to be arranged in upper head plate and body of heater between coaming plate, the outlet of gas off-take is arranged on bottom plate, air inlet kuppe is provided with above in the middle part of the upper head plate of corresponding airscoop shroud import, combustion gas kuppe is provided with on below in the middle part of upper head plate, catalytic bed heater is provided with in the body of heater that air intake port is corresponding, kuppe of giving vent to anger is provided with below in the middle part of the bottom plate that corresponding air leaving cover exports, airscoop shroud connects catalysis air intake heater, air leaving cover connects catalytic exhaust entrance.
3. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 2, is characterized in that: described air intake duct is identical with the quantity of gas off-take and to be evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board.
4. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 2, is characterized in that: described air inlet kuppe is positive rectangular pyramid structure, and combustion gas kuppe and kuppe of giving vent to anger are inverted positive rectangular pyramid structure.
5. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 2, it is characterized in that: described air intake duct 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 the air intake duct rectangle steel tube wall of its both sides, body of heater peripheral board and body of heater.
6. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 2, is characterized in that: be provided with catalyst bracket in the body of heater above described catalytic bed heater, on catalyst bracket, install catalyst layer.
7. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 2, is characterized in that: described airscoop shroud is provided with explosion-proof relief mouth.
8. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 1, it is characterized in that: described spray filter comprises a tower body, air inlet is made at a side lower part of tower body, air outlet is made on the tower body top of side relative to air inlet, in tower body, the first filter course is set respectively from bottom to up, second filter course and demist layer, bottom shower nozzle is evenly equipped with below the first filter course, middle part shower nozzle is evenly equipped with between the first filter course and the second filter course, top shower nozzle is evenly equipped with between the second filter course and demist layer, tower body air outlet side is fixedly mounted with a filter, this filter air inlet is communicated with tower body air outlet, this filter is provided with filter air outlet, particle filter course has been horizontally disposed with in filter, filter air outlet connects spark arrester by pipeline.
9. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 8, it is characterized in that: below the first described filter course, be provided with arc wind waveguide plate, this arc wind waveguide plate is corresponding with air inlet, tower body bottom is provided with aqua storage tank, is provided with discharge outlet bottom aqua storage tank.
10. the industry volatilizable organic pollutant purifying system being exclusively used in painting workshop according to claim 8, it is characterized in that: the first described 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.
CN201310454167.0A 2013-09-27 2013-09-27 Industrial volatile organic pollutant purifying system dedicated to painting workshops Expired - Fee Related CN103480226B (en)

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