CN207024949U - The industrial dense catalytic thermal burning processing system of VOC waste gas - Google Patents

Abstract

The utility model discloses the dense catalytic thermal burning processing system of industrial VOC waste gas, including spray process module, irradiation modules, concentration module and catalytic burner, exhaust emission tube is connected with the spray process module, the spray process module is connected with the dry channel of the irradiation modules, the irradiation modules are connected with the concentration module, the concentration module is connected with the catalytic burner, and the discharge fume pipe of the catalytic burner is connected the discharge manifold with discharge manifold and is provided with a branch line to be connected with the thermal source interface of the irradiation modules.Have the advantage that as follows with advantageous effects：Enter after the flue gas drying of recycling and carry out combustion decomposition；By carrying out combustion degradation after concentration；Combustion chamber discharge heat is sufficiently recycled, energy-saving effect is obvious, and the completely burned degradeds of VOC, and environment is no longer polluted.

Description

The industrial dense catalytic thermal burning processing system of VOC waste gas

【Technical field】

A kind of emission-control equipment is the utility model is related to, particularly a kind of dense catalytic thermal burning processing of industrial VOC waste gas System.

【Background technology】

Drying kiln can be used for being thermally dried processing to the paint and coating of workpiece surface.Workpiece is in high-temperature process During, VOC (VOC) gas in workpiece is vented directly in environment with tail gas, it will environment is made Into serious pollution, while somatic damage can be caused to the staff in the region and resident.

Hand is mainly administered using absorption process, combustion method, UF membrane after condensation method, absorption-vacuum desorption etc. in industry at present Section, existing VOCs treatment means are single, and construction is complicated, otherwise treatment effect is very poor, otherwise need to consume most of energy, Improve processing cost.

【Utility model content】

The purpose of this utility model is to be directed to deficiency existing for above-mentioned existing technology, there is provided one kind can be eliminated with high degree and waved Hair property organic compound (VOC) gas exhaust emission, simple in construction, efficient energy-saving and more environmentally friendly industrial VOC waste gas is dense urges Change heat burning processing system.

To achieve these goals, the utility model is realized in：The industrial dense catalytic thermal burning processing system of VOC waste gas System, including spray process module, irradiation modules, concentration module and catalytic burner, exhaust emission tube and the spray process mould Block is connected, and the spray process module is connected with the dry channel of the irradiation modules, the irradiation modules and the enrichment mode Block is connected, and the concentration module is connected with the catalytic burner, the discharge fume pipe and discharge manifold of the catalytic burner Connect the discharge manifold and be provided with a branch line and be connected with the thermal source interface of the irradiation modules.

The spray process module, including a treating column, it is supreme under being set in the treating column to be sequentially provided with least One humidification process chamber and final dusting chamber, it is separated by between the humidification process chamber and final dusting chamber provided with filter packing layer； The first spray equipment is set in the final dusting intracavitary, first spray equipment is installed on the upper of the final dusting chamber Side；The treating column is provided with gas approach and gas outlet, and the gas approach connects the humidification process chamber, the gas outlet The final dusting chamber is connected, is provided with the second spray equipment on the humidification process chamber, at the setting of the treating column bottom Liquid pool is managed, second spray equipment is connected by delivery pipe through water pump with the processing liquid pool.

First spray equipment or the second spray equipment include setting the final dusting chamber or humidification process intracavitary Spiral coil, some spray heads are provided with the spiral coil, flue gas can be made to be sprayed with treatment fluid and effectively contacted, The sulfide and nitrogen oxides in flue gas are removed to greatest extent.

The humidification process chamber is set for classification, and the humidification process intracavitary is divided at least by aided filter packing layer Two sub- humidification process chambers；The sub- humidification process chamber of one-level and the sub- humidification process intracavitary of two level set the spray equipment respectively.

The concentration module includes primary concentration portion and secondary concentration portion, the primary concentration portion by purify floss hole and Secondary concentration portion connects.Flue gas, can be by cigarette by passing through secondary concentration portion adsorption concentration after primary concentration portion Adsorption Concentration again Gas disposal passes through smoke stack emission after reaching atmospheric emission standard.

3rd adsorption module is set in the primary concentration portion, and the 3rd adsorption module is installed in rotating shaft, and described Gas approach, purification floss hole, solution suction side and concentration outlet, the purification floss hole and two are provided with primary concentration portion Level concentrating part air inlet connection, concentration floss hole by pipeline with concentration collector be connected, it is described concentrate collector with it is described The air inlet connection of heat regenerator.

The secondary concentration portion includes the first adsorption module and the second adsorption module, and first adsorption module and second inhale Air inlet, purification floss hole, solution suction side and concentration outlet are set respectively in attached module, and the purification floss hole can be direct It is connected with chimney, the gas that discharge standard is met after purification is passed through into smoke stack emission；The purification floss hole in the primary concentration portion Respectively with the connection of first adsorption module and the second adsorption module air inlet, and valve is respectively arranged with the pipeline of air inlet Door；Valve is respectively arranged with pipeline between the purification floss hole and chimney；First adsorption module and the second absorption The concentration outlet of module can be connected with collector, and be discharged in the concentration of first adsorption module and the second adsorption module Valve is respectively arranged with the pipeline that mouth is connected with collector；The solution suction side of first adsorption module and the second adsorption module Connection desorption air inlet pipe, valve is installed in the desorption air inlet pipe.

The solution suction side in the primary concentration portion is connected by mixing arrangement with chimney, and the mixing arrangement, which is provided with, to be used to draw Enter the air inlet duct of air.The solution inspiration of first adsorption module and the second adsorption module in the secondary concentration portion Mouth is connected by mixing arrangement with chimney.Mixed by the processed thoroughly flue gas of reference portion with air come desorption, can be with Waste gas discharge, and heat recovery are reduced, saves the energy.In mixing arrangement, the volume ratio of air and flue gas is 3: 1-3, Preferably, the volume ratio of the air and flue gas is 3: 1.

Compared with prior art, the utility model has the advantage that as follows with advantageous effects：VOC gas will be contained High-temperature flue gas all carries out desulfurization by spray process module and removes big particulate matter, reduces exhaust gas dust discharge；First will spray Waste gas after leaching processing can be mitigated processing load, be improved combustion with combustion decomposition is carried out after the flue gas drying recycled Burn effect；By the high-temperature flue gas containing VOC gas all by carrying out combustion degradation after concentration, almost zero-emission can be reached Put standard；Catalytic burner energy-saving effect is obvious, and the completely burned degradeds of VOC, and environment is no longer polluted.

【Brief description of the drawings】

Fig. 1 is the system flow chart of the dense catalytic thermal burning processing system of the utility model industry VOC waste gas；

Fig. 2 is that the structure of spray process module in the dense catalytic thermal burning processing system of the utility model industry VOC waste gas is shown It is intended to

Fig. 3 is the structural representation that module is concentrated in the dense catalytic thermal burning processing system of the utility model industry VOC waste gas.

【Embodiment】

Explanation is described in detail to the utility model below in conjunction with the drawings and specific embodiments.

The industrial dense catalytic thermal burning processing system of VOC waste gas, as shown in figure 1, including spray process module 2, irradiation modules 7th, concentrate module 8 and the exhaust emission tube 1 of the painting workshop such as catalytic burner 6, furniture be connected with the spray process module 2, For handling sulfide that may be present and removing bulky grain thing；The drying of the spray process module 2 and the irradiation modules 7 Passage connects, and for the waste gas after spray process being dried processing, mitigates processing load, improves combustion efficiency；It is described dry Dry module 7 is connected with the concentration module 8, and the concentration module 8 is connected with the catalytic burner 6, the catalytic burner 6 Discharge fume pipe be connected with discharge manifold, discharge manifold is gone out by smoke stack emission；The discharge manifold is provided with a branch Pipeline is connected with the thermal source interface of the irradiation modules 7.

Control valve 14 is set between the irradiation modules 7 and the connecting pipe of the catalytic burner 6.The discharge manifold Upper setting flue gas distributor box 9, the branch line is connected with the flue gas distributor box 9.

The catalytic burner 6 can be photocatalysis burner, can directly buy matured product on the market, its The luminous energy of extraneous radiation is mainly absorbed using photochemical catalyst titanium dioxide (TiO2), it is directly translated into chemical energy.To smelly Some organic matters that oxygen is difficult to aoxidize such as chloroform, four chlorination charcoals, hexachloro-benzene, can effectively it be decomposed, so to difficulty There is special meaning with the organic matter of degraded, light-catalysed efficient oxidation agent is hydroxyl radical free radical (HO), hydroxyl radical free radical (HO) Oxidisability higher than common ozone, hydrogen peroxide, potassium permanganate, hypochlorous acid etc..

The irradiation modules 7 are heat exchanger, and it includes dry channel and heat exchanger channels, the dry channel and the spray The outlet connection of processing module 2, the heat exchanger channels are connected with the branch line, waste gas are entered for reclaiming discharge waste heat Row drying, energy-conservation, and positive effect.

The spray process module, as shown in Fig. 2 it includes a treating column, in the treating column from bottom to up according to It is secondary to be provided with least one humidification process chamber 11 and final dusting chamber 12, set between the humidification process chamber 11 and final dusting chamber 12 There is filter packing layer 13 to be separated by；First spray equipment 53, first spray equipment 53 are set in the final dusting chamber 12 It is installed on the top of the final dusting chamber 12；First spray equipment 53 includes the spiral coil for setting the final dusting chamber, Some spray heads are provided with the spiral coil, first spray equipment 53 passes through delivery pipe and the first water pump 52 and storage Pond 51 connects；The treating column sets gas approach to be connected with exhaust emission tube 1 close to bottom sidewall, and bottom sets discharge outlet 16, upper end sets gas outlet, and the gas approach connects the humidification process chamber 11, and the gas outlet connection is described secondary Dedusting chamber.The treating column bottom is provided with processing liquid pool 41, for collecting the treatment fluid flowed down from the discharge outlet 16.It is described Discharge outlet 16 can be placed in the processing liquid pool 41 below liquid level, can so avoid smoke overflow.The humidification process chamber 11 tops are provided with the second spray equipment 43, and second spray equipment 43 is by delivery pipe through the second water pump 42 and the processing Liquid pool 41 is connected, and the treatment fluid recycled in processing liquid pool 41 is carried out at spray wet to the flue gas entered from gas approach Reason, the effective sulfide removed in flue gas and active nitrogen oxides.The spray equipment 43 includes setting humidification process The inside spin coil pipe of chamber 11, sets some spray heads on the spiral coil, and flue gas can be made to be sprayed with treatment fluid and carried out effectively Contact, sulfide and nitrogen oxides in flue gas are removed to greatest extent.

Wherein, the treatment fluid of reusable edible is contained in the processing liquid pool 41, the treatment fluid can be aqueous slkali, excellent Select limewash.Water level detecting sensor is provided with the processing liquid pool 41, the treatment fluid water in the processing liquid pool 41 When position is declined to a certain extent, alarm or addition treatment fluid are sent.

The thickness of the filter packing layer 13 is 25-40cm, and it is fixed in the side wall of the treating column.The filtering is filled out Filling is Raschig ring in the bed of material 13.The Raschig ring size is 36mm~40mm.Preferably ceramic Raschig ring, its ceramic wall thickness are 4mm~8mm, price is low, and filter effect is obvious.Most preferably, the thickness of the filter packing layer 13 is 33-36cm.

The spray process module, on the basis of above-mentioned, the humidification process chamber 11 is set for classification, at the humidification Minimum two sub- humidification process chamber (the sub- humidification process chamber of one-level and two levels are divided into by aided filter packing layer 15 in reason chamber 11 Sub- humidification process chamber).The sub- humidification process chamber of the one-level and the sub- humidification process intracavitary of two level set the spray equipment 43 respectively. Flue gas is humidified after first passing through the sub- humidification process chamber spray process of one-level by entering two level after the filtering of aided filter packing layer 15 Processing chamber spray process, final dusting chamber 12 is entered after then being humidified by filter packing layer 13 and carries out dust removal process.

The thickness of aided filter packing layer 15 is 16-25cm, and it is fixed in the side wall of the treating column.It is described excessively auxiliary Help the interior filling of filter packing layer 15 is Pall ring.20%-40% filler volumes can be effectively saved using the Pall ring. Most preferably, the thickness of the filter packing layer 13 is 17-23cm.

The concentration module, as shown in figure 3, it includes primary concentration portion and secondary concentration portion, the primary concentration portion leads to Purification floss hole is crossed to be connected with secondary concentration portion.Flue gas by secondary concentration portion by adsorbing again after primary concentration portion Adsorption Concentration Concentration, pass through smoke stack emission after fume treatment being reached to atmospheric emission standard.

3rd adsorption module is set in the primary concentration portion, and the 3rd adsorption module is installed in rotating shaft, and described Gas approach, purification floss hole, solution suction side and concentration outlet, the purification floss hole and two are provided with primary concentration portion Level concentrating part air inlet connection, concentration floss hole by pipeline with concentration collector be connected, it is described concentrate collector with it is described The import connection of heat regenerator 4.Flue gas containing VOC enters from gas approach, passes through the suction of the 3rd adsorption module Attached face, then discharged, flue gas 60-70% VOC suctions can be got rid of with purification floss hole；When needing desorption, desorption Gas enters from solution suction side, and the 3rd adsorption module rotates around the axis, and makes the facing solution suction side of desorption of the 3rd adsorption module, Desorption gas will adsorb enters concentration collector after the high concentration VOC elutions of the 3rd adsorption module from concentration floss hole.It is described Primary concentration portion is simple in construction to be rotary-type, easy to use, and can continuously work.

The secondary concentration portion includes the first adsorption module and the second adsorption module, and first adsorption module and second inhale Air inlet, purification floss hole, solution suction side and concentration outlet are set respectively in attached module, and the purification floss hole can be direct It is connected with chimney, the gas that discharge standard is met after purification is passed through into smoke stack emission.The purification floss hole in the primary concentration portion Respectively with the connection of first adsorption module and the second adsorption module air inlet, and valve is respectively arranged with the pipeline of air inlet Door.Valve is respectively arranged with pipeline between the purification floss hole and chimney.First adsorption module and the second absorption The concentration outlet of module can be connected with collector, and be discharged in the concentration of first adsorption module and the second adsorption module Valve is respectively arranged with the pipeline that mouth is connected with collector.The solution suction side of first adsorption module and the second adsorption module Connection desorption air inlet pipe, valve is installed in the desorption air inlet pipe.

First adsorption module and the second adsorption module at work, by Valve controlling, first adsorption module Adsorption filtration is carried out, and the second adsorption module is desorbed, and is then switched over, and is desorbed in the first adsorption module, Adsorption filtration is carried out in second adsorption module.Pending flue gas can reach discharge standard, directly pass through after adsorption filtration Purification floss hole is discharged into chimney.The desorption eluent gas of first adsorption module and the second adsorption module contains higher concentration VOC (VOC).Gas treatment amount can be so reduced, reduces Fuel Consumption, it is cost-effective, and more supernumerary segment Can environmental protection.

The solution suction side in the primary concentration portion is connected by mixing arrangement with chimney, and the mixing arrangement, which is provided with, to be used to draw Enter the air inlet duct of air.The solution suction side of first adsorption module and the second adsorption module in the secondary concentration portion It is connected by mixing arrangement with chimney.Being mixed by reference portion flue gas with air come desorption, it is possible to reduce waste gas discharges, and Heat recovery, save the energy.In mixing arrangement, the volume ratio of air and flue gas is 3: 1-3, it is preferred that the air Volume ratio with flue gas is 3: 1.

The primary concentration portion can be zeolite runner, and the zeolite runner can be by adjusting desorption temperature, desorption The parameters such as throughput, concentration rate is further improved, improve VOC removal efficiency and reduces processing cost, is located after being concentrated for diminution Manage equipment, reduce energy loss.3rd adsorption module is set in the primary concentration portion, boiling is filled in the 3rd adsorption module Stone.The VOCs gas concentrations in waste gas can be improved by primary concentration portion, can so reduce the fuel of combustion decomposition stove Consumption, ignition temperature is about 730 DEG C~900 DEG C in the combustion decomposition stove, and VOC is burnt using high temperature, combustion reaction life Into harmless CO₂And H₂O.VOC inlet gas concentrations can be made to reach heat accumulating type incineration system from concentration is maintained, be not necessary to add auxiliary fuel, Energy resource consumption is greatly decreased；Automatic Control is easily achieved, it is safe；Pending exhaust gas concentration is allowed to fluctuate widely.

The secondary concentration portion is continuously worked using double gas circuits, two adsorbent beds (the first adsorption module and the second absorption moulds Block) it is used alternatingly.First organic exhaust gas is adsorbed with one of adsorbent bed, stops absorption when reaching saturation soon and then uses desorption Organic matter is desorbed by gas from activated carbon makes regenerating active carbon；The organic matter being desorbed has been concentrated that (concentration is more former To improve tens times) and be sent to combustion decomposition stove direct combustion burn till carbon dioxide and vapor discharge.When the concentration of organic exhaust gas reaches During to more than 500PPm, organic exhaust gas can maintain spontaneous combustion in combustion chamber, without external heat.Tail gas after burning adds by heat exchanger Hot-air, hot-air are sent to adsorbent bed, for regenerating active carbon.It can so meet to burn and adsorb required heat energy, reach The purpose of energy-conservation.Enter absorption next time after regeneration；In desorption, purification run can be carried out with another adsorbent bed, both be fitted Together in continuous operation, intermittent operation is also suitable for.

Wherein, first adsorption module and the second adsorption module can be active carbon filter, or cellular activated carbon.

Preferred embodiment of the present utility model described in detail above, it will be appreciated that the ordinary skill of this area without Creative work can is needed to make many modifications and variations according to design of the present utility model.Therefore, it is all in the art Technical staff is conceived in prior art basis by logic analysis, reasoning or can according to limited experiment according to the utility model , should be among the protection domain determined by the claims with obtained technical scheme.

Claims (7)

1. the industrial dense catalytic thermal burning processing system of VOC waste gas, it is characterised in that：Including spray process module, irradiation modules, dense Contracting module and catalytic burner, exhaust emission tube are connected with the spray process module, and the spray process module is done with described The dry channel connection of dry module, the irradiation modules are connected with the concentration module, and the concentration module is fired with the catalysis Burner connects, and the discharge fume pipe of the catalytic burner is connected the discharge manifold with discharge manifold and is provided with a branch line It is connected with the thermal source interface of the irradiation modules；The spray process module, including a treating column, set in the treating column Put down it is supreme be sequentially provided with least one humidification process chamber and final dusting chamber, between the humidification process chamber and final dusting chamber It is separated by provided with filter packing layer；The first spray equipment is set in the final dusting intracavitary, first spray equipment is installed on The top of the final dusting chamber；The treating column is provided with gas approach and gas outlet, and the gas approach connection is described to be added Wet process chamber, the gas outlet connect the final dusting chamber, the second spray equipment, institute are provided with the humidification process chamber State treating column bottom and processing liquid pool is set, second spray equipment is connected by delivery pipe through water pump with the processing liquid pool.

2. the dense catalytic thermal burning processing system of industrial VOC waste gas as claimed in claim 1, it is characterised in that：First spray Shower device or the second spray equipment include setting the final dusting chamber or the spiral coil of humidification process intracavitary, in the spiral Some spray heads are provided with coil pipe.

3. the dense catalytic thermal burning processing system of industrial VOC waste gas as claimed in claim 2, it is characterised in that：At the humidification Manage chamber to set for classification, the humidification process intracavitary is divided into minimum two sub- humidification process chambers by aided filter packing layer； The sub- humidification process chamber of one-level and the sub- humidification process intracavitary of two level set the spray equipment respectively.

4. the dense catalytic thermal burning processing system of industrial VOC waste gas as claimed in claim 1, it is characterised in that：The enrichment mode Block includes primary concentration portion and secondary concentration portion, and the primary concentration portion is connected by purifying floss hole with secondary concentration portion；Cigarette Gas can reach fume treatment air discharge by passing through secondary concentration portion adsorption concentration after primary concentration portion Adsorption Concentration again Pass through smoke stack emission after standard.

5. the dense catalytic thermal burning processing system of industrial VOC waste gas as claimed in claim 4, it is characterised in that：The one-level is dense 3rd adsorption module is set in contracting portion, and the 3rd adsorption module is installed in rotating shaft, and is provided with the primary concentration portion Gas approach, purification floss hole, solution suction side and concentration outlet, the purification floss hole and the air inlet in secondary concentration portion Connection, concentration floss hole are connected by pipeline with concentration collector, the air inlet of the concentration collector and heat regenerator Connection.

6. the dense catalytic thermal burning processing system of industrial VOC waste gas as claimed in claim 5, it is characterised in that：The two level is dense Contracting portion includes the first adsorption module and the second adsorption module, set respectively on first adsorption module and the second adsorption module into Gas port, purification floss hole, solution suction side and concentration outlet, the purification floss hole can directly be connected with chimney, will purify The gas for meeting discharge standard afterwards passes through smoke stack emission；The purification floss hole in the primary concentration portion adsorbs with described first respectively The connection of module and the second adsorption module air inlet, and it is respectively arranged with valve on the pipeline of air inlet；The purification floss hole Valve is respectively arranged with pipeline between chimney；The concentration outlet of first adsorption module and the second adsorption module can To be connected with collector, and in the pipe that is connected with collector of concentration outlet of first adsorption module and the second adsorption module Valve is respectively arranged with road；The solution suction side connection desorption air inlet pipe of first adsorption module and the second adsorption module, Valve is installed in the desorption air inlet pipe.

7. the dense catalytic thermal burning processing system of industrial VOC waste gas as claimed in claim 6, it is characterised in that：The one-level is dense The solution suction side in contracting portion is connected by mixing arrangement with chimney, and the mixing arrangement is provided with the air input for being used to introduce air Pipe.