CN107998820A - Furniture lacquer spraying waste gas processing unit - Google Patents
Furniture lacquer spraying waste gas processing unit Download PDFInfo
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- CN107998820A CN107998820A CN201711453104.8A CN201711453104A CN107998820A CN 107998820 A CN107998820 A CN 107998820A CN 201711453104 A CN201711453104 A CN 201711453104A CN 107998820 A CN107998820 A CN 107998820A
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- 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
- B01D53/0454—Controlling adsorption
-
- 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
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- 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
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/063—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating electric heating
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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
-
- 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
-
- 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
-
- 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
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A kind of lacquer spraying waste gas processing unit, including dry filter（2）, sieve adsorpting bed（4）, VOCs on-line computing models（5）, main air blower（7）, exhaust tube（8）, PLC control system（9）, catalysis burning bed（11）, desorption wind turbine（12）；Enter dry filter after paint particle in voc_s removal exhaust gas, remove the exhaust gas after coating cloud and dust and enter the sieve adsorpting bed, volatile organic compounds is attracted to the porous surface of molecular sieve in the sieve adsorpting bed, and purified purification gas passes through main air blower and exhaust tube high-altitude qualified discharge from the outlet of the sieve adsorpting bed；The VOCs being adsorbed in sieve adsorpting bed, into desorption wind turbine, is desorbed in desorption through hot gas stripping, and the VOCs being desorbed out enters catalysis burning bed and carries out catalysis oxidation decomposition.The improvement of low-concentration organic exhaust gas in the technology suitable treatment, it is high treating effect, easily controllable.
Description
Technical field
The invention belongs to VOCs exhaust-gas treatments field, and in particular to a kind of furniture industry lacquer spraying waste gas processing unit.
Background technology
As China manufactures the continuous development of industry, the yield and species of its subsequent product increases year by year, production,
During accumulating, use, a certain amount of various organic matters are contained in the exhaust gas of generation, are immediately discharged in air, serious ground contamination
Environment, volatile organic compounds VOCs (Volatile Organic Compounds abbreviation VOCs) therein can join
With photochemical reaction, photochemical fog is formed, while is also the essential condition that second particle organic matter is formed in air, for big
Compression ring border and human health damage are huge.Particularly in furniture spray paint industry, the discharge capacity of industrial VOCs constantly increases, mesh
Before one of the main reason for having become China's group of cities and local Regional Atmospheric Pollution.Therefore, the contamination control of industrial VOCs
Problem, has become the mostly important problem of current control air pollution in China, organizations at different levels need to be caused to pay much attention to, take and cut
Real effective measures are administered, and protect the living environment of oneself.
The involved industry of organic exhaust gas discharge is numerous, and pollutant kind composition is complex.The species of pollutant is almost
All organic compounds are covered, the exhaust gas usually discharged is mainly to there is hydrocarbon compound（Alkane, alkene and aromatic hydrocarbons）, first
Based on the organic compounds such as benzene, dimethylbenzene, benzene class, ketone, esters, alcohols, phenols, aldehydes, amine, nitrile, cyanogen.
VOCs organic exhaust gas contains poisonous oxious component, pollutes atmospheric environment, is detrimental to health.VOC gas can be by exhaling
Inhale road enter human body, make one to produce the symptom such as dizzy, nauseous, aplastic anemia also resulted in when serious, influence production environment and
Serious threat is caused to the physical and mental health of staff.Therefore, which is handled, is very necessary.
The processing method of VOCs organic exhaust gas mainly has absorption process, active carbon adsorption, combustion method, condensation method, low temperature etc.
Ion method and photocatalytic method.But selection, processing gas concentration, cost, treatment effect from absorbent etc. consider, are applied to
The environment protection treating of furniture industry lacquer spraying waste gas, above method have certain limitation when being used alone.Various processing methods
Rationalize and combine, deficiency existing for single treatment method can be made up, preferably meet that the processing of furniture industry spraying exhaust gas will
Ask.
The content of the invention
It is an object of the invention to provide efficient, economic, energy saving General Office for the characteristics of furniture industry lacquer spraying waste gas
Reason technology, makes up the deficiency that existing treatment technology is used alone, and concrete technical scheme is as follows：
A kind of lacquer spraying waste gas processing unit, including dry filter 2, sieve adsorpting bed 4, VOCs on-line computing models 5, main air blower
7th, exhaust tube 8, PLC control system 9, catalysis burning bed 11, desorption wind turbine 12；Organic exhaust gas after water-screen cabinet purifier is gone
Enter the dry filter 2 after paint particle in removing exhaust gas, remove the exhaust gas after coating cloud and dust and enter the molecular sieve
Adsorbent bed 4, the volatile organic compounds in the sieve adsorpting bed 4（VOCs）The porous surface of molecular sieve is attracted to,
So that exhaust gas is purified, purified purification gas passes through main air blower 7 and exhaust from the outlet of the sieve adsorpting bed 4
8 high-altitude qualified discharges of cylinder；The VOCs being adsorbed in sieve adsorpting bed, into desorption wind turbine 12, in desorption through hot gas stripping
And be desorbed, the VOCs being desorbed out enters catalysis burning bed 11 and carries out catalysis oxidation decomposition.
Further, by switching gas circuit valve 3, the fixed adsorbent bed of adsorption saturation is switched to and treats detachment status.
Further, every group of dry filter 2 installs a set of pressure differential warning device, when filter cotton blocks, on filter cotton
The pressure differential of lower filtering both sides is excessive, and when differential manometer 1 shows that pressure difference exceedes predetermined value, pressure differential warning device sends alarm signal
Number.
Further, the lacquer spraying waste gas processing unit, which further includes, mends air-cooler 10, once unit temp raises, reaches predetermined
During setting value, system automatically turns on valve and starts benefit air-cooler 10, and cold wind enters device and adjusts temperature, and controlling reaction temperature is pre-
Determine in setting value.
Further, burning bed 11 is catalyzed mainly by electric heater, catalyst, heat exchanger, four-way valve and temperature sensor group
Into.
Further, the catalysis burning bed 11 uses electrical heating, and gas, which is heated to 300 DEG C or so, enters catalyst chamber,
Under the action of catalyst, the organic matter in gas resolves into CO2、H2The materials such as O, while heat is released, make gas temperature further
Lifting, which discharges after thermal storage ceramic recovery section heat, and the gas temperature of discharge is at 60~70 DEG C or so, the gas
Body divides two parts, and a part is directly discharged by main air blower 7 and exhaust tube 8, is largely back in built-in heat exchanger, further carries
Sent after rising gas temperature to adsorbent filler, for being desorbed hot use.
Further, whole device is controlled automatically by 9 auto-controll operation of PLC control system, desorption process control using PLC
System, PLC control system 9 be also responsible for equipment implement power supply and automatically control, to it is described catalysis burning bed 11 operating status,
Temperature spot is monitored.
Further, the catalyst or uses rare earth metal generally using platinum, palladium as the precious metal catalyst of active metal.
Further, the lacquer spraying waste gas processing unit further includes VOCs on-line computing models 5, periodically to adsorbent bed outlet drain
VOCs be detected, to judge whether adsorbent bed needs to regenerate, discharge exhaust gas will discharge beyond standards when, start desorption
Technique, to the regeneration of adsorbent beds, prevents exhaust gas discharge beyond standards.
The beneficial effect of the application：The application is a kind of integrated skill for being combined adsorption technology and catalytic combustion technology
Art, by the organic exhaust gas of Wind Volume, low concentration by absorption/desorption process be converted into small air quantity, high concentration organic exhaust gas, so
Afterwards by catalysis burning purification, the combustion heat of organic matter can be effectively utilized.Low concentration organic waste in the technology suitable treatment
Gas（2000 mg/m of general ＜3）Improvement.Not only have the function of to remove organic matter in exhaust gas, while be also equipped with removing other
The Comprehensive Characteristics of impurity, being run by different operating mode devices proves, the technology maturation, small investment, operating cost are low, treatment effect
It is good, easy to operate, easily controllable, environmental pollution is small, source of the gas accommodation is wide, its treatment effect and economic indicator are in the country
Advanced level of the same trade.The VOCs treatment efficiency of more than concentration 300mg/m3 is more than 90%, ensures qualified discharge；Concentration
Below 300mg/m3 ensures that qualified discharge is arrived in processing.
Brief description of the drawings
Fig. 1 is the processing device structure diagram of furniture industry lacquer spraying waste gas.
In figure：1st, differential manometer；2nd, dry filter；3rd, switching gas circuit valve；4th, sieve adsorpting bed；5th, VOCs is monitored on-line
Instrument；6th, temperature point；7th, main air blower；8th, exhaust tube；9th, PLC control system；10th, air-cooler is mended；11st, it is catalyzed burning bed；12nd, take off
Attached wind turbine.
Embodiment
The lacquer spraying waste gas processing unit of the present invention is further illustrated below in conjunction with the accompanying drawings.
A kind of lacquer spraying waste gas processing unit, including dry filter 2, sieve adsorpting bed 4, VOCs on-line computing models 5, master
Wind turbine 7, exhaust tube 8, PLC control system 9, catalysis burning bed 11, desorption wind turbine 12；Organic waste after water-screen cabinet purifier
Gas enters the dry filter 2 after removing the paint particle in removing exhaust gas, removes the exhaust gas after coating cloud and dust and enters described point
Son sieve adsorbent bed 4, the volatile organic compounds in the sieve adsorpting bed 4（VOCs）It is attracted to the porous table of molecular sieve
Face so that exhaust gas is purified, purified purification gas from the outlet of the sieve adsorpting bed 4 by main air blower 7 and
8 high-altitude qualified discharge of exhaust tube；The VOCs being adsorbed in sieve adsorpting bed, into desorption wind turbine 12, in desorption through hot gas
Stripping and be desorbed, the VOCs that is desorbed out enters catalysis burning bed 11 and carries out catalysis oxidation decomposition.The catalysis burning bed 11 is adopted
With electrical heating, gas is heated to 300 DEG C or so and enters catalyst chamber, under the action of catalyst, the organic matter in gas decomposes
Into CO2、H2The materials such as O, while heat is released, gas temperature is further lifted, the high-temperature gas is through thermal storage ceramic recovery section
Discharged after heat, the gas temperature of discharge is at 60~70 DEG C or so, which divides two parts, and a part passes through main air blower 7 and row
Inflator 8 directly discharges, and is largely back in built-in heat exchanger, is sent after further lift gas temperature to adsorbent filler,
For being desorbed hot use.
First, may be also containing a small amount of particle matter and powder easily condensed in the organic exhaust gas after water-screen cabinet purifier
Dirt, if not pretreated exhaust gas is introduced directly into sieve adsorpting bed easily blocks molecular sieve surface micropore, increase system resistance,
Influence ventilation effect and even cause security risk to system, therefore pre-process most important to the normal operation of system.Therefore need
The exhaust gas pre-processing device such as front end filter is set, improves the mass-transfer efficiency of adsorbent（Increase adsorbent with polluting air
Contact area）, reduce windage.Dry filter 2 of the present invention is specially：
Specification：6000mm × 2000mm × 1500mm, totally 3 groups；
Specification：6600mm × 2200mm × 1500mm, totally 1 group；
Material：Carbon steel anti-corrosion.
Material containing secondary filtration（Thick effect, middle effect）.
In view of the convenience of operation and maintenance in future, every group of dry filter 2 installs a set of pressure differential warning device, works as filtering
When cotton blocks, the pressure differential that filter cotton filters both sides up and down is excessive, when differential manometer 1 shows that pressure difference exceedes predetermined value, pressure differential
Warning device sends alarm signal, reminds maintenance personnel to replace filter cotton in time.
Then, remove the exhaust gas after the impurity such as coating cloud and dust to be admitted in the sieve adsorpting bed 4, adsorption treatment layer
Flow section, by organic exhaust gas molecule and sorbing material Interaction Force, achieve the purpose that waste gas purification.Its main feature is that
1. adsorbate（Organic exhaust gas）Do not react mutually with adsorbent, 2. process carries out very fast, and 3. adsorbent nature is being inhaled
Do not change during attached, 4. adsorption process is reversible；So as to which the organic component in exhaust gas to be adsorbed to the surface area in material, so that
Exhaust gas is purified.Purified purification gas passes through 8 high-altitude of main air blower 7 and exhaust tube from the outlet of the sieve adsorpting bed
Qualified discharge.
The sieve adsorpting bed of the application uses fixed bed, and adsorbent uses water resistance honeycomb molecular sieve.Absorber
Blocking makes, and according to the processing air quantity of exhaust gas, configures the absorber of respective numbers.
Molecular sieve usage quantity：10000m3/h is about equipped with 1m3 molecular sieves, itself design consider treatment effect requirement compared with
Height, every ten thousand air quantity of molecular sieve selected parameter about 1.4m3/, purification efficiency are more than 90%.
In addition, by switching gas circuit valve 3, the fixed adsorbent bed of adsorption saturation is switched to and treats detachment status.It is each to inhale
Coupon member needs to configure two gas circuit valves, completes handover operation process when absorbing unit is adsorbed or be desorbed behaviour.Such as institute
State switching gas circuit valve and use electrically operated valve, detailed process is as follows：By taking 3 sets of adsorbent beds as an example, wherein 2 absorption, another 1 unadsorbed
Bed continues to be desorbed exhaust gas, it can be achieved that offline or online desorption.Start desorption wind turbine 12, be desorbed compressor flow
6000m3/ h, total head 2300Pa, power 11KW, opens corresponding electrically operated valve and electric heater, and the bed of adsorption saturation is carried out
Heating desorption, and the exhaust gas of desorption is sent into catalysis burning bed 11.
Being catalyzed the basic principle burnt is：It is typical gas-solid-phase catalytic reaction to be catalyzed burning, and its essence is active oxygen is joined
With deep oxidation act on.In catalyticing combustion process, the effect of catalyst is to reduce activation energy, while catalyst surface has
Suction-operated, makes reactant molecule be enriched in surface and improves reaction rate, accelerates the progress of reaction.It can make by catalyst
Under the conditions of relatively low initiation temperature flameless combustion occurs for organic exhaust gas, and oxygenolysis is CO2And H2O, while release a large amount of
Thermal energy.
The characteristics of catalysis burning：1. initiation temperature is low, save the energy, organic waste gas catalytic combustion with directly burning compared with,
It is low with initiation temperature, energy consumption also small distinguishing feature.Organic substance concentration reaches 2.5g/m in the offgas3Catalysis is burnt just afterwards
Without extraneous heat supply.Organic substance concentration, which further improves rear catalyticing combustion process, in the offgas can outwardly provide heat.
2. applied widely, catalysis burning can almost handle all hydro carbons organic exhaust gas and foul gas, i.e., it is suitable for concentration
Scope is wide, the various VOCs treatments of complicated component.For the low dense of the industries such as organic chemical industry, coating, insulating materials discharge
Degree, multicomponent, but it is more preferable without the exhaust gas of recovery value, treatment effect.3. treatment effeciency is high, non-secondary pollution, fired with catalysis
For the purifying rate of burning method processing organic exhaust gas generally all more than 99%, final product is harmless CO2And H2O（Heteroato mic organic
Compound also has other combustion products）, therefore non-secondary pollution problem.
The catalysis burning bed 11 of the application uses heat accumulating type catalytic unit, is to utilize the high specific surface area of thermal storage ceramic and height
The heat conduction efficiency of effect, can effectively recycle combustion heat energy, reduce the operating cost of catalytic unit.The catalysis burning bed 11 is adopted
With electrical heating, gas is heated to 300 DEG C or so and enters catalyst chamber, under the action of catalyst, the organic matter in gas decomposes
Into CO2、H2The materials such as O, while heat is released, gas temperature is further lifted, the high-temperature gas is through thermal storage ceramic recovery section
Discharged after heat, the gas temperature of discharge is at 60~70 DEG C or so, which divides two parts, and a part passes through main air blower 7 and row
Inflator 8 directly discharges, and is largely back in built-in heat exchanger, is sent after further lift gas temperature to adsorbent filler,
For being desorbed hot use.The desorption temperature of gas is controlled, the organic concentration in desorption gas is can control, utilizes combustion heat release
Heat is catalyzed the thermal balance for the needs that burn, are desorbed to reach, and to maintain the operation of system, can save operating cost well.
Catalyst generally using platinum, palladium as the precious metal catalyst of active metal, equally can also be used the rare earth metals such as titanium, cerium to urge
Change, the use of catalyst considered according to the composite factor such as temperature in use, the resistance to poison and heat endurance of catalyst.Variously-shaped
In it is cellular, air speed is maximum, and resistance is minimum, is conducive to catalysis burning, in equal air quantity is handled, catalytic combustion system is most
To be light and handy, floor space and taken up space minimum.
Using ceramic honeycomb material as carrier, the ceramic honey comb of dipping is made the application for active component, and there is high catalysis to live
The features such as property, good heat endurance, longer service life, small gas-flow resistance, high intensity.
Molecular sieve sorbing material in this programme is regenerated using warm air blowoff, and the organic matter purged out is sent to catalysis
Combustion apparatus burning is handled, while maintains again the energy needed for the operation of generating apparatus using organic compound combustion heat release.
Catalysis burning bed 11 is mainly made of electric heater, catalyst, heat exchanger, four-way valve and temperature sensor.Equipment
Liner is made of stainless steel, and shell uses Q235, thermal insulation material, insulation layer thickness 200mm, material are filled out between liner and shell
For alumina silicate.
According to the sorbent quantity in adsorbent bed, 0.1~1m/s of wind speed is desorbed, this programme is selected 0.3m/s or so, then taken off
Attached air quantity is:
2m×2m×0.3m/s×3600s=4320m3/h;
2.2m×2.2m×0.3m/s×3600s=5227m3/h;
Catalytic combustion device design treatment air quantity in this programme is 5000m3/ h, catalyst activity component are rare earth+transition gold
The composite catalyst of category+noble metal, the service life was up to 5 years during normal use.
Whole device uses touch-screen by 9 auto-controll operation of PLC control system, human-computer interaction interface.Desorption process
Control automatically controlled using PLC, be provided with centralized Control and control on the spot, PLC control system 9 be responsible for equipment implement power supply with
Automatically control, to being catalyzed the operating status of burning bed, temperature spot is monitored.To ensure the normal fortune of lacquer spraying waste gas processing unit
OK, the application reaches the safety protection function of desorption by gathering with the variable signal of transmission temperature, time parameter.User can
To carry out the adjustment of technique according to the actual conditions at scene, clearly show that all monitoring parameters in touch-screen, grasp lacquer spraying waste gas
The operation conditions of processing unit.When abnormal conditions occurs in system, will there are corresponding alarm and prompting on touch-screen, and ensure system
Safe, reliable, efficient operation.
Device, which further includes, mends air-cooler 10, once unit temp raises, when reaching predetermined set value, system automatically turns on valve
Door, which starts, mends air-cooler 10, and cold wind enters device and adjusts temperature, and controlling reaction temperature is in predetermined set value.
The present apparatus further includes VOCs on-line computing models 5, and periodically the VOCs of adsorbent bed outlet drain is detected, to sentence
Whether disconnected adsorbent bed, which needs, regenerates, discharge exhaust gas will discharge beyond standards when, start separating process, to the regeneration of adsorbent beds,
Prevent exhaust gas discharge beyond standards.
The application is a kind of integrated technology for being combined adsorption technology and catalytic combustion technology, and Wind Volume, low concentration are had
Machine exhaust gas is converted into small air quantity, the organic exhaust gas of high concentration by absorption/desorption process, can then by catalysis burning purification
Effectively to utilize the combustion heat of organic matter.Low-concentration organic exhaust gas in the technology suitable treatment（2000 mg/m3 of general ＜）'s
Administer.Not only have the function of to remove organic matter in exhaust gas, while be also equipped with removing the Comprehensive Characteristics of other impurities, by difference
The operation of operating mode device proves that the technology maturation, small investment, operating cost are low, high treating effect, easy to operate, easily controllable, ring
Border pollution is small, source of the gas accommodation is wide, its treatment effect and economic indicator are in domestic pharmaceutical industry industry advanced level.Concentration
The VOCs treatment efficiency of more than 300mg/m3 is more than 90%, ensures qualified discharge；Below concentration 300mg/m3 guarantees processing is arrived
Qualified discharge.
Claims (9)
1. a kind of lacquer spraying waste gas processing unit, it is characterised in that including dry filter（2）, sieve adsorpting bed（4）, VOCs exists
Line monitor（5）, main air blower（7）, exhaust tube（8）, PLC control system（9）, catalysis burning bed（11）, desorption wind turbine（12）；Through
Enter the dry filter after the paint particle in voc_s removal exhaust gas after water-screen cabinet purifier（2）, go paint removal
Exhaust gas after mist and dust enters the sieve adsorpting bed（4）, in the sieve adsorpting bed（4）Middle volatile organic compound
Thing（VOCs）The porous surface of molecular sieve is attracted to, so that exhaust gas is purified, purified purification gas is from described point
Son sieve adsorbent bed（4）Outlet pass through main air blower（7）And exhaust tube（8）High-altitude qualified discharge；It is adsorbed in sieve adsorpting bed
VOCs, into desorption wind turbine（12）, it is desorbed in desorption through hot gas stripping, the VOCs being desorbed out enters catalysis burning bed
（11）Carry out catalysis oxidation decomposition.
2. spraying emission-control equipment according to claim 1, it is characterised in that pass through switching gas circuit valve（3）, will adsorb
The fixed adsorbent bed of saturation, which switches to, treats detachment status.
3. spraying emission-control equipment according to claim 1, it is characterised in that every group of dry filter（2）Install a set of
Pressure differential warning device, when filter cotton blocks, the pressure differential that filter cotton filters both sides up and down is excessive, works as differential manometer（1）Display
When pressure difference exceedes predetermined value, pressure differential warning device sends alarm signal.
4. spraying emission-control equipment according to claim 1, it is characterised in that the lacquer spraying waste gas processing unit is also wrapped
Include benefit air-cooler（10）Once unit temp raises, when reaching predetermined set value, system automatically turns on valve and starts benefit air-cooler
（10）, cold wind is into device adjusting temperature, and controlling reaction temperature is in predetermined set value.
5. spraying emission-control equipment according to claim 1, it is characterised in that the catalysis burning bed（11）Mainly by
Electric heater, catalyst, heat exchanger, four-way valve and temperature sensor composition.
6. spraying emission-control equipment according to claim 1, it is characterised in that the catalysis burning bed（11）Using electricity
Gas, is heated to 300 DEG C or so and enters catalyst chamber, under the action of catalyst, the organic matter in gas resolves into by heating
CO2、H2The materials such as O, while heat is released, gas temperature is further lifted, the high-temperature gas is through thermal storage ceramic recovery section warm
Discharged after amount, the gas temperature of discharge is at 60~70 DEG C or so, which divides two parts, and a part passes through main air blower（7）And row
Inflator（8）Directly discharge, be largely back in built-in heat exchanger, sent after further lift gas temperature to adsorbent filler
It is interior, for being desorbed hot use.
7. spraying emission-control equipment according to claim 1, it is characterised in that whole device passes through PLC control system
（9）Auto-controll operation, desorption process control are automatically controlled using PLC, PLC control system（9）It is also responsible for that device is implemented to supply
Electricity and automatically control, to the catalysis burning bed（11）Operating status, temperature spot monitored.
8. spraying emission-control equipment according to claim 6, it is characterised in that the catalyst is generally using platinum, palladium as work
The precious metal catalyst of property metal, or use rare earth metal.
9. spraying emission-control equipment according to claim 1, it is characterised in that the lacquer spraying waste gas processing unit is also wrapped
Include VOCs on-line computing models（5）, periodically the VOCs of adsorbent bed outlet drain is detected, to judge whether adsorbent bed needs
Regeneration, discharge exhaust gas will discharge beyond standards when, start separating process, to the regeneration of adsorbent beds, prevent exhaust gas discharge beyond standards.
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| CN201711453104.8A CN107998820A (en) | 2017-12-28 | 2017-12-28 | Furniture lacquer spraying waste gas processing unit |
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| CN201711453104.8A CN107998820A (en) | 2017-12-28 | 2017-12-28 | Furniture lacquer spraying waste gas processing unit |
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| CN108662598A (en) * | 2018-07-16 | 2018-10-16 | 浏阳市源友印务包装有限公司 | A kind of printing machine gas sampling exhaust system |
| CN108844086A (en) * | 2018-08-28 | 2018-11-20 | 江苏新苏承环保设备有限公司 | A kind of industrial waste gas purifying processing unit |
| CN109237498A (en) * | 2018-10-29 | 2019-01-18 | 江苏中科睿赛污染控制工程有限公司 | VOCs adsorption desorption concentration-catalytic combustion system |
| CN109290106A (en) * | 2018-11-12 | 2019-02-01 | 江苏长虹机械设计院有限公司 | A kind of dry type spray paint filtration system |
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| CN111701386A (en) * | 2020-07-03 | 2020-09-25 | 常州市爱伦机械有限公司 | VOCs waste gas treatment system and treatment method thereof |
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| CN109237498A (en) * | 2018-10-29 | 2019-01-18 | 江苏中科睿赛污染控制工程有限公司 | VOCs adsorption desorption concentration-catalytic combustion system |
| CN109290106A (en) * | 2018-11-12 | 2019-02-01 | 江苏长虹机械设计院有限公司 | A kind of dry type spray paint filtration system |
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| CN110575720A (en) * | 2019-09-18 | 2019-12-17 | 成都数之联科技有限公司 | Monitoring system of furniture paint spraying waste gas treatment device |
| CN110694448A (en) * | 2019-10-18 | 2020-01-17 | 郭渊明 | Exhaust gas purification monitoring management system |
| CN111121072A (en) * | 2019-11-18 | 2020-05-08 | 华夏碧水环保科技有限公司 | VOCs waste gas catalytic combustion treatment system and method |
| CN111701386A (en) * | 2020-07-03 | 2020-09-25 | 常州市爱伦机械有限公司 | VOCs waste gas treatment system and treatment method thereof |
| CN111744319A (en) * | 2020-07-07 | 2020-10-09 | 李庆彪 | Double-concentration spraying waste gas treatment system and control method thereof |
| CN112675703A (en) * | 2021-01-20 | 2021-04-20 | 河北宏泰专用汽车有限公司 | Efficient volatile organic compound treatment system and method |
| CN112963848A (en) * | 2021-03-11 | 2021-06-15 | 江苏国鹰环境科技有限公司 | Treatment method and equipment for organic waste gas |
| CN114849418A (en) * | 2022-04-29 | 2022-08-05 | 浙江天地环保科技股份有限公司 | Coking wastewater dissipation VOCs treatment system and method |
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Application publication date: 20180508 |