CN109954369A - A kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalytic combustion system and technique - Google Patents
A kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalytic combustion system and technique Download PDFInfo
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- CN109954369A CN109954369A CN201711334952.7A CN201711334952A CN109954369A CN 109954369 A CN109954369 A CN 109954369A CN 201711334952 A CN201711334952 A CN 201711334952A CN 109954369 A CN109954369 A CN 109954369A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0258—Other waste gases from painting equipments or paint drying installations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40086—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by using a purge gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2204/00—Supplementary heating arrangements
- F23G2204/20—Supplementary heating arrangements using electric energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Abstract
The invention discloses a kind of spray painting organic exhaust gas (VOCs) Adsorption Concentration elevated temperature desorption catalysis burning processing device and its techniques, including filter 1, the activated carbon adsorption case 301 of multiple parallel connections, air-introduced machine 5, heat exchanger 19, fire-retardant filter 9, de-adsorption cycle method 10, desorption blower 11, catalysis burning bed 12, exhaust tube 6, oxygenating air-valve 20, cooling exhaust-valve 14 and mend cold blast sliding valve 18.The present invention increases heat exchanger between air-introduced machine 5 and exhaust tube 6, and desorption gas temperature is effectively reduced under low oxygen conditions, improves safety and desorption efficiency；Air-introduced machine is set only to cool down to active carbon by the way that cooling pipe is arranged, the energy consumption that the runing time and catalysis heating bed for reducing circulating fan reheat, energy conservation and environmental protection；And effectively contain the generation of active carbon accident on fire by installation high temperature warning system, the cooling II and water spray pipeline III of nitrogen.
Description
Technical field
The present invention relates to technical field of waste gas treatment, and in particular to a kind of volatile organic waste gas of painting line
(VOCs) activated carbon adsorption of exhaust gas, elevated temperature desorption and catalysis burning processing device.
Background technique
China's Jing-jin-ji region, the Yangtze River Delta, the large quantities of spraying industries of Pearl River Delta area concentration.Spray enterprise VOCs exhaust gas production
Greatly, it is more that there are problems, is badly in need of regulation.VOCs ingredient is relative complex in spraying exhaust gas, and Species differences are big, such as phthalic resin coating
In used solvent naphtha, dimethylbenzene, toluene equal solvent, it is molten to mainly contain toluene, dimethylbenzene, butanol etc. in epoxy coating
Agent, polyurethane coating use hexamethylene, toluene, ethyl acetate, dimethylbenzene equal solvent.It is original big in paint in painting process
Organic solvent volatilization is measured, not only there is special penetrating odor, and cause sternly to spray painting worker and nearby residents health
Ghost image is rung.Meanwhile a large amount of dust and coating cloud can be also generated in planing, spraying process.
How environment protection requirement is reached, it is current important topic that VOCs exhaust gas, which is effectively treated,.Due to lacquer spraying waste gas
The complexity of VOCs ingredient, it usually needs several process combination processing.For the VOCs exhaust gas of Wind Volume, low concentration, live
Property charcoal Adsorption Concentration, elevated temperature desorption, catalysis burning combined treatment process, can not only continuous processing VOCs exhaust gas, converted
The active carbon of adsorption saturation is desorbed again in heat for harmless water and carbon dioxide, and the release that can be burnt with catalysis
It is raw, the high concentration VOCs burning got off is desorbed, catalysis burning bed is maintained to stablize in higher temperature, without extraneous heat supply, reaches waste heat
Using with energy-saving and environment-friendly purpose.
But this technique still has shortcoming in safety and efficiency at present.Since in desorption process, VOCs is concentrated
It is sent into catalysis burning bed, the gas after catalysis burning, because highly exothermic, temperature is possible to be more than setting value, harm activity
Charcoal cabinet safety.Treatment process common at present is to supplement air quantity by supplement fresh air, has the function that cooling gas.But
Oxygen content increases in desorption gas after benefit wind, is possible to that pyrophoricity accident occurs with internal high temperature point contact in active cabinet.Cause
This, the temperature setting of general desorption gas is no more than 100 DEG C, and desorption time is longer, efficiency is lower.
In addition, in current technique, it is general by mending air-cooler air-supply cooling line and equipment after desorption, by
In circulating fan on necessary pipeline, it is necessary to keep it turning on, be unfavorable for saving electric energy and extend service life of fan.Catalysis combustion
Bed is burnt in temperature-fall period due to passing in and out a large amount of cold wind, and temperature rapid decrease needs to add again when next de-adsorption cycle starts
Heat reaches burning condition, leads to the waste of the energy.
Summary of the invention
It is an object of the invention to solve safety existing for spray painting VOCs desorption catalyzing burning process and active carbon desorption
Time longer problem provides a kind of energy-efficient Adsorption Concentration elevated temperature desorption catalysis burning processing device, and specific technical solution is such as
Under:
A kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalysis burning processing device, it is characterised in that: including filtering
Device, the activated carbon adsorption case of multiple parallel connections, air-introduced machine, heat exchanger, fire-retardant filter, de-adsorption cycle valve, desorption blower, catalysis combustion
It burns bed, exhaust tube, oxygenating air-valve, cooling exhaust-valve and mends cold blast sliding valve；
VOCs waste gas outlet is connected by pipeline I with the filter air inlet；The activated carbon adsorption case is equipped with
VOCs adsorb import, adsorption cleaning outlet, desorption air-supply import, desorption return air outlet, filter air outlet with it is multiple in parallel
Activated carbon adsorption case VOCs adsorbs import and is connected by air hose, and the outlet of activated carbon adsorption case adsorption cleaning passes through air hose and air-introduced machine
It is connected, is equipped with air-valve on the exhaust duct.The outlet of 3 adsorption cleaning of activated carbon adsorption case, air-introduced machine and the exhaust tube
Air hose is passed sequentially through to be connected；
The air hose that the air-introduced machine is connected with exhaust tube is equipped with heat exchange branch pipe, is connected with heat exchanger air intlet, and set
There is heat exchange air inlet valve, heat exchanger air outlet slit is connected by air hose with exhaust tube；The air-introduced machine is equipped with desorption total pipeline
Cooling branch pipe(tube), which is provided with benefit cold blast sliding valve；Return air outlet, fire-retardant filter, desorption wind is desorbed in the activated carbon adsorption case
Machine, catalysis burning bed are sequentially connected by air hose, are equipped with de-adsorption cycle valve, de-adsorption cycle between fire-retardant filter, desorption blower
It is equipped with oxygenation air hose between valve and desorption blower, and is equipped with oxygenation air-valve；Cooling duct is equipped between fire arrester and exhaust tube, and
Equipped with cooling exhaust-valve；Catalysis burning bed recycles air inlet with heat exchanger by circulation air hose and is connected, and heat exchanger recycles air port
It is connected with activated carbon adsorption case desorption total pipeline, is catalyzed between burning bed and exhaust tube and is equipped with branch pipe, and be equipped with burning and gas-exhausting valve,
Active carbon desorption total pipeline passes through branch pipe respectively and is connected with active carbon desorption air-supply import；It is equipped in the catalysis burning bed remote
Infrared electric heating layer, catalytic combustion layer, heat exchange layer, outer wall are equipped with high temperature resistant rock wool heat-preservation layer；Desorption gas is protected in desorption process
It holds at 120 ± 5 DEG C or so；Activated carbon adsorption case is equipped with high-temperature warning system；Nitrogen pipeline II and water spray are equipped in device
Pipeline III is connected with each activated carbon adsorption case, and corresponding air-valve or water valve are equipped in each connecting pipe.
The filter takes primarily efficient filter layer, medium air filtration layer and active carbon to sacrifice bed.
The activated carbon adsorption case is equipped with glass vision panel, uses waterproof honeycomb shaped activated carbon in case.
The Adsorption Concentration elevated temperature desorption catalysis burning processing device is equipped with PLC control system, and the air-introduced machine takes off
Attached blower, high temperature warning system, be catalyzed burning bed infrared heating device controlled by PLC system；The nitrogen pipeline, water
Air-valve, the water valve that spray piping, desorption air hose, absorption air hose, cooling duct, heat exchange air hose are equipped with are controlled by PLC system.
A kind of spray painting VOCs exhaust gas Adsorption Concentration elevated temperature desorption catalysis burning treatment process using described device, feature
It is:
1) in Adsorption Concentration technique, VOCs exhaust gas removes dust and coating cloud by filter 1, passes through multiple activity in parallel
It is discharged after 301 adsorption cleaning of charcoal case from exhaust tube 6；
2) device uses " more suctions one are de- " technique, remains that an activated carbon adsorption case 3 is in detachment status in device,
It after some active carbon 3 adsorption saturation of case, closes it and adsorbs air inlet 2 and air outlet valve 4, it is ensured that cooling exhaust-valve 14 mends cold wind
Valve 18, heat exchange air inlet valve 17 are closed, and are preheated in the desorption incipient stage to 12 inside noble metal catalyst of catalytic bed, are worked as bed
When reaching predetermined temperature, desorption blower 11 and de-adsorption cycle valve 10, desorption air inlet 7 and outlet air-valve 8 are opened, it is switched to de-
Attached reproduced state, and intermittent oxygenating provides enough oxygen combustions, when oxygenating is synchronous to open burning exhaust-valve 13；
3) after being desorbed, increase heat exchange 17 air quantity of air inlet valve, desorption gas temperature is made to be down to 100 DEG C hereinafter, and closing
Exchange heat air inlet valve 17, opens and mends cold blast sliding valve 18, cooling exhaust-valve 14, closes desorption blower 11 and de-adsorption cycle valve 10, use part
Purified exhaust gas directly cools down to active carbon case；After the completion of cooling, closes and mend cold blast sliding valve 18, cooling exhaust-valve 14, desorption
Intake valve 7 and desorption air outlet valve 8, open absorption intake valve 2 and adsorption outlet valve 4, activated carbon adsorption case are switched to absorption
Mode.
Beneficial effect
Compared with the prior art, the invention has the beneficial effects that:
(1) desorption gas temperature is effectively reduced under the premise of not increasing desorption gas oxygen content by heat exchanger in the present invention
Degree；(2) since desorption gas oxygen content is lower, safety increases, and desorption gas temperature can increase to from 100 DEG C of traditional handicraft
120 DEG C, improve desorption efficiency；(3) in the case where not increasing cooling blower, the present invention is realized de- using the air quantity of air-introduced machine
The temperature-fall period of attached gas reduces equipment cost and operation spending；(4) it by increasing cooling pipe and air-valve, is being desorbed
It is directly cooling to active carbon case with air-introduced machine in cooling procedure after, it avoids reducing desorption wind to catalysis burning bed cooling
Heating energy consumption of the runing time and catalysis burning bed of machine in next de-adsorption cycle, reaches energy-efficient purpose；(5) pass through increasing
Be added in nitrogen pipeline, water spray pipeline and overtemperature alarm system, effectively containment because desorption gas temperature it is excessively high caused by active carbon
Accident on fire occurs.
Detailed description of the invention
Fig. 1 is the structural representation of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalytic combustion system provided by the invention
Figure；
Fig. 2 is the schematic diagram of filter of the present invention；
Fig. 3 is the schematic diagram of present invention catalysis burning bed；
In figure: exhaust piping I, nitrogen pipeline II, shower water pipeline III, filter 1 adsorb intake valve 2, and active carbon is inhaled
Intake valve 7 is desorbed in attached case 3, adsorption outlet valve 4, air-introduced machine 5, exhaust tube 6, air outlet valve 8 is desorbed, fire-retardant filter 9, desorption follows
Blower 11 is desorbed in ring valve 10, is catalyzed burning bed 12, and burn exhaust-valve 13, cooling exhaust-valve 14, nitrogen intake valve 15, shower water
Valve 16, exchange heat air inlet valve 17, benefit cold blast sliding valve 18, heat exchanger 19, oxygenating air-valve 20, primarily efficient filter layer 101, medium air filtration layer 102,
Active carbon sacrificial layer 103, multiple parallel connection activated carbon adsorption casees 301, spare activated carbon adsorption case 302, Far-infrared Heating layer 1201,
Catalytic combustion layer 1202, heat exchange layer 1201.
Specific embodiment
The present invention is described in further details below in conjunction with Detailed description of the invention and specific embodiment:
A kind of spray painting VOCs exhaust gas Adsorption Concentration elevated temperature desorption catalysis burning processing device and its technique, including filter 1,
Activated carbon adsorption case 301, air-introduced machine 5, heat exchanger 19, fire-retardant filter 9, de-adsorption cycle valve 10, the desorption blower of multiple parallel connections
11, burning bed 12, exhaust tube 6, oxygenating air-valve 20, cooling exhaust-valve 14 are catalyzed and mends cold blast sliding valve 18.
VOCs waste gas outlet is connected by pipeline I with the filter air inlet, is generated in removing painting process big
Measure dust and coating cloud.Filter is taken secondary filtration and active carbon to sacrifice bed process and is pre-processed.Exhaust gas, which first passes through, just imitated
Filtering layer 101 and medium effeciency filter 102 remove coating cloud, then sacrifice bed 103, place to go higher boiling macromolecular complex by an active carbon
Easily polymerized monomer substance, the active carbon such as matter and acrylic acid regularly replace according to the actual operation.
The activated carbon adsorption case 3 is equipped with VOCs absorption import, adsorption cleaning outlet, desorption air-supply import, is desorbed back
Wind outlet, filter air outlet are connected with the activated carbon adsorption case VOCs of multiple parallel connections absorption import by air hose, and active carbon is inhaled
Attached case adsorption cleaning outlet is connected by air hose with air-introduced machine, is equipped with air-valve on the exhaust duct.The active carbon is inhaled
Attached 3 adsorption cleaning of case outlet, air-introduced machine 5 pass sequentially through air hose with exhaust tube 6 and are connected.Active carbon nature is in adsorption process
It does not change, and adsorption process is reversible, multiple adsorption/desorption can be carried out.The present invention is using " more suctions one are de- " online adsorption desorption
Technique, after some active carbon case adsorption saturation, it is switched to which desorption and regeneration state, rest activity charcoal are then in absorption
State.In adsorption desorption system, a spare activated carbon adsorption case 302 is reserved, puts into operation, prevents when abnormal conditions occur
It produces and stops work caused by being operating abnormally because of environmental protection equipment.
The air hose that the air-introduced machine 5 is connected with exhaust tube is equipped with heat exchange branch pipe, is connected with heat exchanger air intlet, and set
There is heat exchange air inlet valve 17, heat exchanger air outlet slit is connected by air hose with exhaust tube；It is set on the air-introduced machine 5 and desorption total pipeline
There is cooling branch pipe(tube), which is provided with and mend cold blast sliding valve 18；The activated carbon adsorption case 3 be desorbed return air outlet, fire-retardant filter 9,
Desorption blower 11, catalysis burning bed 12 are sequentially connected by air hose, are equipped with desorption between fire-retardant filter 9, desorption blower 11 and are followed
Ring valve 10 is equipped with oxygenation air hose, and is equipped with oxygenation air-valve 20 between de-adsorption cycle valve 10 and desorption blower；Fire arrester and exhaust tube
Between be equipped with cooling duct, and be equipped with cooling exhaust-valve 14；Catalysis burning bed 12 by circulation air hose and heat exchanger 19 recycle into
Air port is connected, and heat exchanger 19 recycles air port and is connected with activated carbon adsorption case desorption total pipeline, is catalyzed burning bed 12 and exhaust tube
Between be equipped with branch pipe, and be equipped with burning and gas-exhausting valve 13, active carbon desorption total pipeline pass through respectively branch pipe and active carbon desorption blow
Import is connected；Infrared ray heating layer 1201, catalytic combustion layer 1202, heat exchange layer are equipped in the catalysis burning bed 12
1203, outer wall is equipped with high temperature resistant rock wool heat-preservation layer；After some active carbon case adsorption saturation, closes it and adsorb air inlet 2 and go out
Air valve 4, it is ensured that cooling exhaust-valve 14 mends cold blast sliding valve 18, the heat exchange closing of air inlet valve 17, in the desorption incipient stage to catalytic bed inside
Noble metal catalyst is preheated, and generates hot-air.When bed reaches predetermined temperature, opens desorption blower 11 and desorption follows
Ring valve 10, desorption air inlet 7 and outlet air-valve 8, it is switched to desorption and regeneration state.
It is catalyzed in burning bed 12, desorption gas is introduced into the preheating of heat exchange layer 1203, and it is further to enter electric heating layer 1201
Temperature is improved, is then discharged after the catalysis burning of burning zone 1202 through heat exchange layer, and pass to part of waste heat in heat exchange layer
Into the desorption gas of burning bed.Judge whether to need oxygenating by catalytic combustion layer 1202 and 1201 temperature difference of electric heating layer, when
When the temperature difference is lower than setting value, oxygenating air-valve 20 is opened, provides enough oxygen for catalysis burning, and synchronize and open burning exhaust-valve
13, keep air pressure and extraneous balance in pipe-line equipment to close oxygenating air-valve 20 and combustion when temperature difference is reduced in a certain range
Exhaust-valve 13 is burnt, temperature is controlled.In this way, maintaining burning bed 12 in higher temperature by the thermal energy that catalysis burning provides, without outer
Boundary persistently energizes.
When desorption gas temperature is more than 125 DEG C, heat exchange air inlet valve 17 is opened, the gas part after making adsorption cleaning flows through
Heat exchanger reduces desorption gas temperature, keeps it in 120 ± 5 DEG C or so.Nitrogen pipeline II and water sprayer tube are equipped in device
Road III, each activated carbon adsorption case are designed with high-temperature warning system.When desorption gas temperature constantly increases, when more than 130 DEG C,
It adjusts heat exchange air inlet valve 17 increase air mass flow and opens nitrogen air-valve 2 and active carbon case is cooled down.If desorption gas temperature
When more than 135 DEG C, blower 11 is desorbed and de-adsorption cycle valve 10 is closed, cooling exhaust-valve 14 is opened, high-temperature warning system alarm, water
Spray system automatically turns on, to high temperature active charcoal case forced cooling.After desorption, increases heat exchange 17 air quantity of air inlet valve, make
Desorption gas temperature is down to 100 DEG C or less；It is then turned off heat exchange air inlet valve 17, opens and mends cold blast sliding valve 18, cooling exhaust-valve 14, close
Desorption blower 11 and de-adsorption cycle valve 10 are closed, is cooled down to active carbon case.Due to drawing in cooling procedure without using desorption blower
Wind, therefore its runing time can be reduced；And cryogenic gas is no longer pass through catalysis burning bed, due to the effect of insulating layer, in burning bed
Cool down slower, is still able to maintain higher temperature in window when next desorption cycles carry out, advantageously reduces power consumption.Work as cooling
After the completion, it closes and mends cold blast sliding valve 18, cooling exhaust-valve 14, desorption intake valve 7 and desorption air outlet valve 8, corresponding activated carbon adsorption
Case is again introduced into adsorbed state.
The activated carbon adsorption case is equipped with glass vision panel, uses waterproof honeycomb shaped activated carbon in case.
The Adsorption Concentration elevated temperature desorption catalysis burning processing device is equipped with PLC control system, and the air-introduced machine takes off
Attached blower, high temperature warning system, be catalyzed burning bed infrared heating device controlled by PLC system；The nitrogen pipeline, water
Air-valve, the water valve that spray piping, desorption air hose, absorption air hose, cooling duct, heat exchange air hose are equipped with are controlled by PLC system.
The above is explanation of the invention, is not intended to restrict the invention, other are without departing from principle of the present invention and essence
Mind uses modification, combination and the technical solution simplified, is all contained in the scope of the present invention.
Claims (9)
1. a kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption is catalyzed burning processing device, including filter 1, multiple in parallel
Activated carbon adsorption case 301, air-introduced machine 5, heat exchanger 19, fire-retardant filter 9, de-adsorption cycle valve 10, desorption blower 11, catalysis burning
Bed 12, exhaust tube 6, oxygenating air-valve 20, cooling exhaust-valve 14 and benefit cold blast sliding valve 18；It is characterized by:
VOCs waste gas outlet is connected by pipeline I with the filter air inlet；The activated carbon adsorption case 3 is equipped with VOCs
Adsorb import, adsorption cleaning outlet, desorption air-supply import, the outlet of desorption return air, filter air outlet and multiple activity in parallel
Charcoal adsorption box VOCs adsorbs import and is connected by air hose, and the outlet of activated carbon adsorption case adsorption cleaning passes through air hose and air-introduced machine phase
Even, air-valve is equipped on the exhaust duct.The outlet of 3 adsorption cleaning of activated carbon adsorption case, air-introduced machine 5 and the exhaust tube 6
Air hose is passed sequentially through to be connected；
The air hose that the air-introduced machine 5 is connected with exhaust tube is equipped with heat exchange branch pipe, is connected with heat exchanger air intlet, and is equipped with and changes
Hot air inlet valve 17, heat exchanger air outlet slit are connected by air hose with exhaust tube；The air-introduced machine 5 is equipped with cold with desorption total pipeline
But branch pipe(tube) which is provided with and mend cold blast sliding valve 18；Return air outlet, fire-retardant filter 9, desorption is desorbed in the activated carbon adsorption case 3
Blower 11, catalysis burning bed 12 are sequentially connected by air hose, are equipped with de-adsorption cycle valve between fire-retardant filter 9, desorption blower 11
10, oxygenation air hose is equipped between de-adsorption cycle valve 10 and desorption blower, and be equipped with oxygenation air-valve 20；Between fire arrester and exhaust tube
Equipped with cooling duct, and it is equipped with cooling exhaust-valve 14；It is catalyzed burning bed 12 and air inlet is recycled by circulation air hose and heat exchanger 19
It is connected, heat exchanger 19 recycles air port and is connected with activated carbon adsorption case desorption total pipeline, is catalyzed between burning bed 12 and exhaust tube
Equipped with branch pipe, and it is equipped with burning and gas-exhausting valve 13, active carbon desorption total pipeline passes through branch pipe and active carbon desorption air-supply import respectively
It is connected；Infrared ray heating layer 1201, catalytic combustion layer 1202, heat exchange layer 1203 are equipped in the catalysis burning bed 12；It is de-
Desorption gas is maintained at 120 ± 5 DEG C or so during attached；Activated carbon adsorption case is equipped with high-temperature warning system；It is equipped in device
Nitrogen pipeline II and water spray pipeline III, is connected with each activated carbon adsorption case, and corresponding wind is equipped in each connecting pipe
Valve or water valve.
2. spray painting organic exhaust gas adsorption concentration elevated temperature desorption according to claim 1 is catalyzed burning processing device, feature
Be: the filter takes primarily efficient filter layer, medium air filtration layer and active carbon to sacrifice bed.
3. spray painting organic exhaust gas adsorption concentration elevated temperature desorption according to claim 1 is catalyzed burning processing device, feature
Be: the activated carbon adsorption case, case is interior to use waterproof honeycomb shaped activated carbon.
4. spray painting organic exhaust gas adsorption concentration elevated temperature desorption according to claim 3 is catalyzed burning processing device, feature
Be: the activated carbon adsorption case is equipped with glass vision panel.
5. spray painting organic exhaust gas adsorption concentration elevated temperature desorption according to claim 1 is catalyzed burning processing device, feature
Be: the catalysis burning bed outer wall is equipped with high temperature resistant rock wool heat-preservation layer.
6. spray painting organic exhaust gas adsorption concentration elevated temperature desorption according to claim 1 is catalyzed burning processing device, feature
It is: is equipped with PLC control system, the air-introduced machine, desorption blower, high temperature warning system, the infrared heating for being catalyzed burning bed
Device is controlled by PLC system.
7. spray painting organic exhaust gas adsorption concentration elevated temperature desorption according to claim 6 is catalyzed burning processing device, feature
It is: the wind that the nitrogen pipeline, water spray pipeline, desorption air hose, absorption air hose, cooling duct, heat exchange air hose are equipped with
Valve, water valve are controlled by PLC system.
8. spray painting organic exhaust gas adsorption concentration elevated temperature desorption according to claim 1 is catalyzed burning processing device, feature
Be: the air-valve on each pipeline is one-way flow air quantity valve.
9. a kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalysis burning processing work using device described in claim 1
Skill, it is characterised in that:
1) in Adsorption Concentration technique, organic exhaust gas removes dust and coating cloud by filter 1, passes through multiple active carbon casees in parallel
It is discharged after 301 adsorption cleanings from exhaust tube 6；
2) device uses " more suctions one are de- " technique, remains that an activated carbon adsorption case 3 is in detachment status in device, when certain
After one 3 adsorption saturation of active carbon case, close it and adsorb air inlet 2 and air outlet valve 4, it is ensured that cooling exhaust-valve 14, mend cold blast sliding valve 18,
The air inlet valve 17 that exchanges heat is closed, and is preheated in the desorption incipient stage to 12 inside noble metal catalyst of catalytic bed, when bed reaches
When predetermined temperature, desorption blower 11 and de-adsorption cycle valve 10, desorption air inlet 7 and outlet air-valve 8 are opened, it is switched to which desorption is again
Raw state, and intermittent oxygenating provides enough oxygen combustions, when oxygenating is synchronous to open burning exhaust-valve 13；
3) after being desorbed, increase heat exchange 17 air quantity of air inlet valve, desorption gas temperature is made to be down to 100 DEG C hereinafter, and closing heat exchange
Air inlet valve 17 is opened and mends cold blast sliding valve 18, cooling exhaust-valve 14, closes desorption blower 11 and de-adsorption cycle valve 10, use is Partial cleansing
Exhaust gas afterwards directly cools down to active carbon case；After the completion of cooling, closes and mend cold blast sliding valve 18, cooling exhaust-valve 14, desorption air inlet
Valve 7 and desorption air outlet valve 8, open absorption intake valve 2 and adsorption outlet valve 4, activated carbon adsorption case are switched to absorption mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711334952.7A CN109954369A (en) | 2017-12-14 | 2017-12-14 | A kind of spray painting organic exhaust gas adsorption concentration elevated temperature desorption catalytic combustion system and technique |
Applications Claiming Priority (1)
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