CN103480234A - Special purification system for industrial volatile organic pollutant in PM2.5 - Google Patents
Special purification system for industrial volatile organic pollutant in PM2.5 Download PDFInfo
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- CN103480234A CN103480234A CN201310452013.8A CN201310452013A CN103480234A CN 103480234 A CN103480234 A CN 103480234A CN 201310452013 A CN201310452013 A CN 201310452013A CN 103480234 A CN103480234 A CN 103480234A
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- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 46
- 238000000746 purification Methods 0.000 title abstract 4
- 239000007789 gas Substances 0.000 claims abstract description 218
- 238000003795 desorption Methods 0.000 claims abstract description 120
- 230000003197 catalytic effect Effects 0.000 claims abstract description 75
- 239000002912 waste gas Substances 0.000 claims abstract description 10
- 238000006555 catalytic reaction Methods 0.000 claims description 65
- 239000003463 adsorbent Substances 0.000 claims description 46
- 230000002093 peripheral effect Effects 0.000 claims description 34
- 230000008676 import Effects 0.000 claims description 25
- 239000003054 catalyst Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000000567 combustion gas Substances 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 238000001179 sorption measurement Methods 0.000 abstract 4
- 238000004134 energy conservation Methods 0.000 abstract 1
- 239000013618 particulate matter Substances 0.000 abstract 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 12
- 239000012855 volatile organic compound Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 241000282326 Felis catus Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The invention relates to a special purification system for an industrial volatile organic pollutant in PM2.5 (Particulate Matter 2.5). The special purification system comprises a catalytic gas intake heater, a catalytic bed, a catalytic fan, a heat exchanger, an adsorption bed, an adsorption fan, a flame arrester, a filter, a desorption gas cycle fan, a desorption gas cycle heater and an adsorption bed desorption heater, wherein an industrial volatile organic pollutant waste gas inlet, a purified gas outlet, a desorption waste gas output port, a desorption gas input port, a desorption gas cycle outlet and a desorption gas cycle inlet are formed in the adsorption bed, and the heat exchanger is provided with a catalytic tail gas inlet, a catalytic tail gas outlet, a catalytic gas inlet, a catalytic gas outlet, a desorption gas supply inlet and a desorption gas supply outlet. The system improves heat efficiency of treatment, reduces heat loss, increases a heat recycle rate, improves combustion efficiency, increases a purification rate and a heat exchange rate, utilizes heat energy more reasonably, and meets energy conservation and emission reduction requirements, and the temperature in the catalytic bed is more uniform during combustion.
Description
Technical field
The invention belongs to the cleaning system field, industrial volatile organic pollutants special purifying system in especially a kind of PM2.5.
Background technology
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, and 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, affects catalytic combustion efficiency and heat utilization rate.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, industrial volatile organic pollutants special purifying system in a kind of PM2.5 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:
Industrial volatile organic pollutants special purifying system in a kind of PM2.5, it comprises the catalysis air intake heater, catalytic bed, the catalysis blower fan, heat exchanger, adsorbent bed, the absorption blower fan, 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, and 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, adsorbent bed temperature sensor, adsorbent bed concentration sensor and differential manometer are installed on described adsorbent bed.
And, Tube Temperature Sensor and pipeline concentration sensor are installed on described pipeline.
And described heat exchanger is plate type heat exchanger.
Advantage of the present invention and beneficial effect are:
1, be provided with the industrial volatile organic pollutants exhaust gas inlet in this PM2.5 in the industrial volatile organic pollutants special purifying system 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, 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, in this PM2.5 in the industrial volatile organic pollutants special purifying system heat exchanger 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, in this PM2.5 in the industrial volatile organic pollutants special purifying system adsorbent beds again the industrial volatile organic pollutants after desorption is incorporated into to catalytic bed 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, in this PM2.5 in the industrial volatile organic pollutants special purifying system catalytic bed 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, in this PM2.5, the industrial volatile organic pollutants special purifying system 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, in this PM2.5 in the industrial volatile organic pollutants special purifying system front end be provided with the catalysis air intake heater be 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, in this PM2.5, the industrial volatile organic pollutants special purifying system 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, the high-temperature tail gas that in this PM2.5, in the industrial volatile organic pollutants special purifying system, catalytic combustion produces is 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, the air inlet kuppe and the combustion gas kuppe that in this PM2.5, in the industrial volatile organic pollutants special purifying system, on upper head plate, arrange are design for disassembly, have facilitated the replacing of catalytic bed body of heater inner catalyst, have improved production efficiency.
10, in this PM2.5, in the industrial volatile organic pollutants special purifying system, 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, in this PM2.5 in the industrial volatile organic pollutants special purifying system 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, in this PM2.5 in the industrial volatile organic pollutants special purifying system body of heater peripheral board cross section be rectangle or the 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, be provided with the explosion-proof relief mouth in this PM2.5 on the airscoop shroud in the industrial volatile organic pollutants special purifying system, the security that has improved 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, 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 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.
Industrial volatile organic pollutants special purifying system in a kind of PM2.5, it comprises catalysis air intake heater 2, catalytic bed 1, catalysis blower fan 20, heat exchanger 3, adsorbent bed 9, absorption blower fan 18, spark arrester 6, filter 7, 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 8 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 10, this industrial volatile organic pollutants exhaust gas inlet connects a spark arrester by filter, and 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 11 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.
The present invention's 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.
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.
When in this PM2.5, the industrial volatile organic pollutants special purifying system is worked, after adsorbent bed absorption is saturated, 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. industrial volatile organic pollutants special purifying system in a PM2.5, is characterized in that: comprise the catalysis air intake heater, catalytic bed, the catalysis blower fan, heat exchanger, adsorbent bed, the absorption blower fan, 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, and 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. industrial volatile organic pollutants special purifying system in PM2.5 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. industrial volatile organic pollutants special purifying system in PM2.5 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. industrial volatile organic pollutants special purifying system in PM2.5 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. industrial volatile organic pollutants special purifying system in PM2.5 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. industrial volatile organic pollutants special purifying system in PM2.5 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. industrial volatile organic pollutants special purifying system in PM2.5 according to claim 2, is characterized in that: be provided with the explosion-proof relief mouth on described airscoop shroud.
8. industrial volatile organic pollutants special purifying system in PM2.5 according to claim 1, is characterized in that: adsorbent bed temperature sensor, adsorbent bed concentration sensor and differential manometer are installed on described adsorbent bed.
9. industrial volatile organic pollutants special purifying system in PM2.5 according to claim 1, is characterized in that: Tube Temperature Sensor and pipeline concentration sensor are installed on described pipeline.
10. industrial volatile organic pollutants special purifying system in PM2.5 according to claim 1, it is characterized in that: described heat exchanger is plate type heat exchanger.
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| CN201310452013.8A CN103480234B (en) | 2013-09-27 | 2013-09-27 | Special purification system for industrial volatile organic pollutant in PM2.5 |
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| CN103776666A (en) * | 2014-02-17 | 2014-05-07 | 青岛众瑞智能仪器有限公司 | Six-channel air particle sampling device |
| CN108097035A (en) * | 2017-11-15 | 2018-06-01 | 江苏齐力涂装机械制造有限公司 | A kind of activated carbon is desorbed purifier |
| CN110075667A (en) * | 2019-05-30 | 2019-08-02 | 江苏新聚环保科技有限公司 | Exhaust treatment system |
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| CN103480234B (en) | 2015-04-22 |
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