CN203507769U - Desorption system for processing industrial volatilizable organic pollutant - Google Patents
Desorption system for processing industrial volatilizable organic pollutant Download PDFInfo
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- CN203507769U CN203507769U CN201320605117.3U CN201320605117U CN203507769U CN 203507769 U CN203507769 U CN 203507769U CN 201320605117 U CN201320605117 U CN 201320605117U CN 203507769 U CN203507769 U CN 203507769U
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Abstract
The utility model relates to a desorption system for processing an industrial volatilizable organic pollutant. The desorption system is characterized by comprising a catalytic inlet gas heater, a catalytic bed, a catalytic fan, a heat exchanger, an adsorbent bed, a desorption gas circulating fan, a desorption gas circulating heater and an adsorbent bed desorption heater, wherein an industrial volatilizable 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 adsorbent bed; and a catalytic tail gas inlet, a catalytic tail gas outlet, a catalytic gas inlet, a catalytic gas outlet, a desorption air supply inlet and a desorption air supply outlet are formed on the heat exchanger. The desorption system disclosed by the utility model can effectively improve thermal efficiency of processing, reduce thermal loss, improve heat recovery utilization rate, guarantee uniform temperature in a catalytic combustion bed in the desorption system when carrying out combustion, improve combustion efficiency and purification rate, and enhance heat exchange; the desorption system is more reasonable in utilization of the thermal energy, and can meet demands of energy conservation and emission reduction.
Description
Technical field
The utility model belongs to desorption system field, especially a kind of desorption system for the treatment of industrial volatile organic pollutants.
Background technology
In the desorption system that processing industrial volatile organic pollutants is used at present, capital equipment comprises catalytic bed, catalytic bed is made building enclosure by heat resisting steel sheet material or industrial furnace building material conventionally, in its existing catalytic combustion bed structure, air inlet and air outlet are located at the two ends up and down of catalytic combustion bed, although existing structure can be realized catalytic combustion, but there are the following problems: 1, the thermal losses of catalytic combustion pool furnace body structure own is large, and recuperation of heat utilization ratio is lower; 2, non-uniform temperature in catalytic combustion pool furnace body structure, totally be centre temperature high, edge temperature is low, reduced 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 be controlled in addition, affects catalytic combustion efficiency and heat utilization rate.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of desorption system for the treatment of industrial volatile organic pollutants is provided, this desorption system has effectively improved the thermal efficiency of processing, reduce thermal losses, improve recuperation of heat utilization rate, in catalytic combustion 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 energy-saving and emission-reduction requirement, the gas temperature of input catalytic bed can effectively be controlled.
The utility model solves its technical problem and is achieved through the following technical solutions:
A kind of desorption system for the treatment of industrial volatile organic pollutants, it comprises catalysis air intake heater, catalytic bed, catalysis blower fan, heat exchanger, adsorbent bed, desorption gas circulating fan, desorption gas recirculation heater and adsorbent bed desorption heater, on adsorbent bed, be 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, heat exchanger is provided with 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, 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 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 comprise 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, at body of heater peripheral board outer wall, be evenly fixed with heat-insulation layer, coaming plate in one body of heater is set in body of heater peripheral board, in body of heater, between coaming plate and body of heater peripheral board, be arranged alternately air intake duct and gas off-take, 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, on the upper head plate middle part of corresponding airscoop shroud import, be provided with air inlet kuppe, on below upper head plate middle part, be provided with combustion gas kuppe, in body of heater corresponding to air intake port, be provided with catalytic bed heater, below the bottom plate middle part of corresponding air leaving cover outlet, be provided with the kuppe of giving vent to anger, airscoop shroud connects catalysis air intake heater, air leaving cover connects catalysis gas inlet.
And described air intake duct is identical with the quantity of gas off-take and 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 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 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, in the body of heater of described heater top, be provided with catalyst bracket, catalyst layer is installed on catalyst bracket.
And, on described airscoop shroud, be provided with explosion-proof relief mouth.
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 utility model and beneficial effect are:
1, this is for the treatment of being provided with industrial volatile organic pollutants exhaust gas inlet on adsorbent bed in the desorption system of industrial volatile organic pollutants, purified gas outlet, desorption waste gas delivery outlet, desorption gas input port, desorption gas loop exit and desorption gas loop head, heat exchanger is provided with 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, 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 catalysis blower fan, this structure has realized the process imagine of introducing again catalytic bed when the interior gas industry volatile organic pollutants concentration of desorption heating circulation system reaches self-sustaining burning concentration, make the catalytic bed after preheating can enter fast self-sustaining burning state, make the heat feedback that catalytic combustion produces be 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 for next adsorbent bed, carry out desorption preheating simultaneously, reach design conditions requirement, effectively play a role.For minimizing auxiliary heating, saving energy consumption create conditions.
2, this is provided with catalysis gas inlet for the treatment of heat exchanger in the desorption system of industrial volatile organic pollutants, 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 if can close electric heater to save electric energy, especially for a plurality of adsorbent beds, be connected to while circulating desorption in cleaning system, adsorbent bed output concentration can meet catalytic bed self-sustaining burning concentration, during self desorption, recyclegas temperature can meet by plate type heat exchanger, only realized and used electric heater in initial heating, 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 for the treatment of adsorbent beds in the desorption system of industrial volatile organic pollutants, to catalytic bed self-sustaining burning concentration, again the industrial volatile organic pollutants after desorption being incorporated into catalytic bed carries out catalytic combustion, guaranteed catalytic bed temperature, prevent from entering a gas " blast-cold " effect to catalytic bed, effectively prevented catalyst poisoning.
4, this comprises airscoop shroud for the treatment of catalytic bed in the desorption system of industrial volatile organic pollutants, 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 comprise 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, at body of heater peripheral board outer wall, be evenly fixed with heat-insulation layer, coaming plate in one body of heater is set in body of heater peripheral board, in body of heater, between coaming plate and body of heater peripheral board, be arranged alternately air intake duct and gas off-take, 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, on the upper head plate middle part of corresponding airscoop shroud import, be provided with air inlet kuppe, on below upper head plate middle part, be provided with combustion gas kuppe, in body of heater corresponding to air intake port, be provided with catalytic bed heater, below the bottom plate middle part of corresponding air leaving cover outlet, be provided with the kuppe of giving vent to anger, airscoop shroud connects catalysis air intake heater, air leaving cover connects 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 to burn evenly in body of heater, high-temperature gas after burning refluxes downwards evenly by gas off-take, make bottom of furnace body temperature-compensating even, overcome in prior art catalytic bed body of heater centre temperature high, the shortcoming that temperature low heating in edge is uneven, 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, this desorption system for the treatment of industrial volatile organic pollutants is provided with air inlet kuppe on the upper head plate middle part of corresponding airscoop shroud import, on below upper head plate middle part, be provided with combustion gas kuppe, in body of heater corresponding to air intake port, be provided with heater, this heater is packed on body of heater peripheral board, below the bottom plate middle part of corresponding air leaving cover outlet, be provided with the kuppe of giving vent to anger, 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 burning enters gas off-take, effectively improve catalytic combustion bedside edge megadyne temperature degree, after entering into air leaving cover, evenly discharge, for furnace binding realizes high burning efficiency and purifying rate lays the first stone.
6, this is provided with catalysis air intake heater for the treatment of front end in the desorption system of industrial volatile organic pollutants and in catalytic bed, is 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 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, this desorption system for the treatment of industrial volatile organic pollutants adopts over-over mode that air intake duct and gas off-take are set, and effectively the recycling of catalytic combustion heat is performed to ultimate attainment.Utilize catalyst combustion reaction heat to carry out preheating to entering the gas of catalytic combustion bed.This warm belongs to countercurrent flow, for the high-temperature catalytic tail gas flowing through in the air flue being 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 combustion 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 guarantee that catalytic combustion bed reaches catalysis initiation temperature at the stylish VOCs gas entering 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, this high-temperature tail gas producing for the treatment of catalytic combustion in the desorption system of industrial volatile organic pollutants is along gas off-take, it is the process that body of heater wall is back to catalytic combustion bed lower part outlet, catalytic combustion bed fringe region is carried out to back feeding heating, contribute to the maintenance of catalytic combustion bed ensemble temperature with even, impel catalytic combustion to be evenly distributed in whole catalytic combustion 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, this is design for disassembly for the treatment of the air inlet kuppe arranging on upper head plate in the desorption system of industrial volatile organic pollutants and combustion gas kuppe, has facilitated the replacing of catalytic combustion pool furnace body inner catalyst, has improved production efficiency.
10, these can be different for the treatment of air intake duct in the desorption system of industrial volatile organic pollutants and the quantity of gas off-take, also can be identical, air intake duct sectional area can equal gas off-take sectional area, air intake duct sectional area also can be greater than gas off-take sectional area, air intake duct sectional area can also be less than gas off-take sectional area, according to climate reasons, VOCs gas treatment amount and catalyst use amount, determine different air intake ducts and the cross-section relation between gas off-take, make it more adapt to the processing requirements of different situations.
11, this adopts rectangular steel pipe for the treatment of air intake duct in the desorption system of industrial volatile organic pollutants 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, this kind of mode design can effectively be reduced steel use amount, reduce construction costs, for energy-saving and cost-reducing new design, reach processing requirements completely.
12, this is rectangle or square or circular for the treatment of body of heater peripheral board cross section in the desorption system of industrial volatile organic pollutants, in body of heater, coaming plate cross section is rectangle or square or circular, air intake duct cross section is rectangle or square or fan-shaped or circular or encircle fan-shapedly, and 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 combustion bed profile, facilitates the design of various situations.
13, this,, for the treatment of being provided with explosion-proof relief mouth on the airscoop shroud in the desorption system of industrial volatile organic pollutants, has improved the security of catalytic combustion bed, prevents the generation of security incident.
14 the utility model heat exchangers 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 utility model has effectively improved the thermal efficiency of processing, reduce thermal losses, improve recuperation of heat utilization rate, in catalytic combustion 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 energy-saving and emission-reduction requirement, the gas temperature of input catalytic bed can effectively be controlled.
Accompanying drawing explanation
Fig. 1 is system connection diagram of the present utility model;
Fig. 2 is the utility model catalytic bed structural representation;
Fig. 3 is the right view of Fig. 2;
Fig. 4 is that the A-A of Fig. 3 is to cutaway view;
Fig. 5 is the structural representation (omitting heater, heat-insulation layer, thermocouple and the kuppe of giving vent to anger) of the body of heater of the utility model catalytic bed;
Fig. 6 is that the B-B of Fig. 5 is to cutaway view (omit 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 the utility model catalytic bed;
Figure 10 is the utility model heat exchanger structure schematic diagram.
The specific embodiment
Below by specific embodiment, the utility model is described in further detail, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of desorption system for the treatment of industrial volatile organic pollutants, it comprises catalysis air intake heater 2, catalytic bed 1, catalysis blower fan 20, heat exchanger 3, adsorbent bed 6, desorption gas circulating fan 12, desorption gas recirculation heater 14 and adsorbent bed desorption heater 4, on adsorbent bed, be provided with industrial volatile organic pollutants exhaust gas inlet 7, purified gas outlet 17, desorption waste gas delivery outlet 16, desorption gas input port 5, desorption gas loop exit 18 and desorption gas loop head 8, 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, 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 catalysis blower fan.Catalytic bed in the utility model 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 import 21 is set on airscoop shroud, body of heater lower end is fixedly mounted with air leaving cover, on air leaving cover, set out gas hood outlet 30, 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, at body of heater peripheral board outer wall, be evenly fixed with heat-insulation layer 36, coaming plate 43 in one body of heater is set in body of heater peripheral board, in body of heater, between coaming plate and body of heater peripheral board, be arranged alternately air intake duct 32 and gas off-take 41, 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, on the upper head plate middle part of corresponding airscoop shroud import, be provided with air inlet kuppe 34, on below upper head plate middle part, be provided with combustion gas kuppe 35, in body of heater corresponding to air intake port, be provided with catalytic bed heater 27, below the bottom plate middle part of corresponding air leaving cover outlet, be provided with the kuppe 39 of giving vent to anger, airscoop shroud connects catalysis air intake heater, air leaving cover connects catalysis gas inlet, the quantity of air intake duct and gas off-take is identical and be evenly alternately 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 be evenly alternately 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, air intake duct sectional area can equal gas off-take sectional area, air intake duct sectional area also can be greater than gas off-take sectional area, air intake duct sectional area can also be less than gas off-take sectional area.For the air intake duct in energy-saving and cost-reducing this catalytic combustion pool furnace body structure 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, coaming plate cross section is rectangle or square or circular, air intake duct cross section is rectangle or square or fan-shaped or circular or encircle fan-shapedly, and gas off-take cross section is rectangle or square or fan-shaped or circular or encircle fan-shaped.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, in the body of heater of catalytic bed heater top, be provided with catalyst bracket 38, 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, on airscoop shroud, be provided with explosion-proof relief mouth 22, adsorbent bed temperature sensor 9 is installed on adsorbent bed, adsorbent bed concentration sensor 15 and differential manometer 10, Tube Temperature Sensor 19 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 utility model in use VOCs gas enters through air inlet kuppe gas uniform and flows to the Fighter Inlet upper head plate from the import of airscoop shroud, by inlet duct flow, arrive catalytic combustion pool furnace body below, meeting bottom plate stops to turn back and enters in catalytic combustion pool furnace body, aperture through heater and cat ceramic honeycomb substrate burns, 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 gas off-take both sides, the gas off-take that in body of heater peripheral board and body of heater, coaming plate surrounds, from gas off-take outlet, through the kuppe of giving vent to anger, evenly flow out air leaving cover outlet.
Actual motion compliance test result of the present utility model: this new catalytic burning bed furnace binding in actual use, after conventional preheating, passes into VOCs gas, after catalytic combustion occurs, cuts off electrical heating.Within VOCs gas concentration meets the period of minimum ignition concentration, realize self-sustaining burning completely, without any additional auxiliary thermal source, the catalyticing combustion process catalytic combustion bed tempertaure short time reaches 650 ℃, most time maintains between 400 ℃-500 ℃, and flameholding, fluctuates less.San Ge region, catalytic combustion bed upper, middle and lower temperature instrumentation reading approaches, 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.
During this work of desorption system for the treatment of industrial volatile organic pollutants, after adsorbent bed absorption is saturated, start to carry out desorption circulation and improve adsorbent bed desorption output concentration, after reaching catalytic bed burning concentration, by Self controlling valve, control the material getting off to catalytic bed output desorption, through catalytic bed burning rear portion clean gas, directly discharge, another part clean gas is supplied with adsorbent bed desorption by circulating line and is used, heat energy in system recycles 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 object of whole system self-sustaining burning.
Claims (10)
1. the desorption system for the treatment of industrial volatile organic pollutants, it is characterized in that: comprise catalysis air intake heater, catalytic bed, catalysis blower fan, heat exchanger, adsorbent bed, desorption gas circulating fan, desorption gas recirculation heater and adsorbent bed desorption heater, on adsorbent bed, be 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, heat exchanger is provided with 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, 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 catalysis blower fan.
2. the desorption system for the treatment of industrial volatile organic pollutants 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 comprise 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, at body of heater peripheral board outer wall, be evenly fixed with heat-insulation layer, coaming plate in one body of heater is set in body of heater peripheral board, in body of heater, between coaming plate and body of heater peripheral board, be arranged alternately air intake duct and gas off-take, 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, on the upper head plate middle part of corresponding airscoop shroud import, be provided with air inlet kuppe, on below upper head plate middle part, be provided with combustion gas kuppe, in body of heater corresponding to air intake port, be provided with catalytic bed heater, below the bottom plate middle part of corresponding air leaving cover outlet, be provided with the kuppe of giving vent to anger, airscoop shroud connects catalysis air intake heater, air leaving cover connects catalysis gas inlet.
3. the desorption system for the treatment of industrial volatile organic pollutants according to claim 2, is characterized in that: described air intake duct is identical with the quantity of gas off-take and be evenly alternately arranged in body of heater between coaming plate and body of heater peripheral board.
4. the desorption system for the treatment of industrial volatile organic pollutants according to claim 2, is characterized in that: described air inlet kuppe is positive rectangular pyramid structure, and combustion gas kuppe and the kuppe of giving vent to anger are inverted positive rectangular pyramid structure.
5. the desorption system for the treatment of industrial volatile organic pollutants according to claim 2, it is characterized in that: described air intake duct adopt rectangular steel pipe and be arranged on 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 desorption system for the treatment of industrial volatile organic pollutants according to claim 2, is characterized in that: in the body of heater of described catalytic bed heater top, be provided with catalyst bracket, catalyst layer is installed on catalyst bracket.
7. the desorption system for the treatment of industrial volatile organic pollutants according to claim 2, is characterized in that: on described airscoop shroud, be provided with explosion-proof relief mouth.
8. the desorption system for the treatment of industrial volatile organic pollutants 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. the desorption system for the treatment of industrial volatile organic pollutants according to claim 1, is characterized in that: Tube Temperature Sensor and pipeline concentration sensor are installed on described pipeline.
10. the desorption system for the treatment of industrial volatile organic pollutants according to claim 1, is characterized in that: described heat exchanger is plate type heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320605117.3U CN203507769U (en) | 2013-09-27 | 2013-09-27 | Desorption system for processing industrial volatilizable organic pollutant |
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| CN201320605117.3U CN203507769U (en) | 2013-09-27 | 2013-09-27 | Desorption system for processing industrial volatilizable organic pollutant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463929A (en) * | 2013-09-27 | 2013-12-25 | 天津赛智科技发展有限公司 | Stripping system used for treating industrial volatile organic pollutants |
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2013
- 2013-09-27 CN CN201320605117.3U patent/CN203507769U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103463929A (en) * | 2013-09-27 | 2013-12-25 | 天津赛智科技发展有限公司 | Stripping system used for treating industrial volatile organic pollutants |
| CN103463929B (en) * | 2013-09-27 | 2015-05-27 | 天津赛智科技发展有限公司 | Stripping system used for treating industrial volatile organic pollutants |
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