CN106268308A - A kind of remove the cleaning system of VOC in industrial waste gas - Google Patents
A kind of remove the cleaning system of VOC in industrial waste gas Download PDFInfo
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- CN106268308A CN106268308A CN201610964126.XA CN201610964126A CN106268308A CN 106268308 A CN106268308 A CN 106268308A CN 201610964126 A CN201610964126 A CN 201610964126A CN 106268308 A CN106268308 A CN 106268308A
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
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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
- B01D53/002—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 condensation
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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
- B01D53/007—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 irradiation
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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
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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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
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
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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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- 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
Abstract
The invention discloses and a kind of remove the cleaning system of VOC in industrial waste gas, including: filter A, blower fan, condenser A, gas-liquid separator A, ferrum cobalt photocatalyst salinization effect dehalogenation reactor, adsorption tower A, adsorption tower B, adsorption tower C, PLC automatic control unit, VOC gas detector, steam generator, filter B, air compressor machine, exsiccator, condenser B, gas-liquid separator B and 17 set sequencing valves.What native system was creative applies metal photocatalyst salinization effect, ferrum, cobalt metal simple-substance fine powder are the most uniformly spread, under the irradiation of specific wavelength blue light, halogenated hydrocarbons in waste gas VOC can be with ferrum, cobalt simple substance generation photocatalyst reaction, halogen atom therein generates macromolecular complex salt with ferrum, cobalt chemical combination, to complete the dehalogenation process of VOC waste gas.VOC waste gas after dehalogenation processes can be substantially reduced its consumption to activated carbon adsorption usefulness, thus has been obviously improved the adsorption efficiency of activated carbon.
Description
Technical field
The present invention relates to the cleaning system of a kind of industrial waste gas VOC, belong to the exhaust-gas treatment field in environmental conservation.
Background technology
VOC is the english abbreviation of VOC (Volatile Organic Compounds), be except CO,
CO2、H2CO3, metal carbides, outside metal carbonate and ammonium carbonate, the carbon compound of any participation atmospheric photochemical reaction, bag
Include the materials such as formaldehyde, ammonia, ethylene glycol, esters.When VOC reaches finite concentration in room or manufacturing scene, head can be caused
Bitterly, Nausea and vomiting, the symptom such as weak, even cause tic and stupor time serious, also can injure liver, kidney, brain and nerve
System, causes the serious consequences such as hypomnesis.Therefore, how administering VOC is the most constantly research and development and exploration in recent years
Problem.
At present, both at home and abroad different present situations is presented from research contents for the governing measure of VOC, but be summed up, base
Absorption method, solvent absorption, heat damage method and biological treatment these four ultimate principles and means it have been used uniformly across on Ben.
(1) absorption method:
Absorption method in organic exhaust gas is primarily adapted for use in low concentration, high flux organic exhaust gas.Present stage, the place of this organic exhaust gas
Reason method is the most ripe, and energy expenditure is smaller, but treatment effeciency is the highest, and can thoroughly purify
Machine waste gas.It was verified that this processing method is worthy of popularization.But this method there is also certain defect, it needs
Equipment volume is huger, and technological process is more complicated, so, use the method process waste gas it is critical only that absorption
Agent.Currently, use absorption method to process organic exhaust gas, use activated carbon more, be primarily due to activated carbon pore structure relatively good, inhale
Attached property is stronger.Additionally, process through the peroxide of iron or ozone, the absorption property of activated carbon will be more preferable, the process of organic exhaust gas
Will be more safely with effective.
(2) solvent absorption:
Using liquid flux as absorbent, making the harmful components in waste gas be absorbed by liquid, thus reach the purpose purified, it is inhaled
Receipts process is according to the similar principle that mixes of Organic substance, the relatively low diesel oil of, vapour pressure higher frequently with boiling point, kerosene as solvent,
Make VOC transfer to liquid phase from gas phase, then absorbing liquid is carried out desorbing process, reclaim VOC therein, make solvent be able to simultaneously
Regeneration.
(3) heat damage method:
Heat damage method is divided into direct combustion method, Production by Catalytic Combustion Process and condensed combustion method.Its failure mechanism is oxidation, thermal cracking and heat
Decompose, thus reach to administer the purpose of VOC.Heat damage method is suitable for little air quantity, the gas treatment of high concentration, for discharging gas continuously
The occasion of body, uses equipment simple, and small investment, easy to operate, floor space is few, additionally can recycle heat energy, and gas is clean
Change thoroughly.
(4) biological treatment:
It is the most inchoate that biologic treating technique is applied to the purified treatment of organic exhaust gas, is an emerging technology.Often
The biological treatment seen includes that Biological fitler method, biological island, zinc cation method, membrane bioreactor and rotating disc type are biological
Filtration reactor method.Biomembrance process is that gas chromatography and some inorganic matter are given birth to by the metabolic processes utilizing microorganism
Thing is degraded, and generates CO2And H2O, and then effectively remove the polluter in industrial waste gas.
At present, the industrial waste gas VOC processing method that China is commonly used, generally have that construction cost is high, floor space big,
The shortcomings such as bad adaptability, treatment effect are undesirable.Therefore, it is necessary to break away from existing Treatment process route, hew out at purification
The reason new way containing VOC industrial waste gas, and then develop the nickeliferous metallurgical industry waste gas purification treatment technology of a kind of new type.
Summary of the invention
A kind of VOC removed in industrial waste gas, this system include filter A, air-introduced machine, condenser A, gas-liquid separator A,
Ferrum cobalt photocatalyst salinization effect dehalogenation reactor, adsorption tower A, adsorption tower B, adsorption tower C, PLC automatic control unit, VOC gas
Detector, steam generator, filter B, air compressor machine, exsiccator, condenser B, gas-liquid separator B and 17 set sequencing valves etc.；
Wherein, the industrial waste gas containing VOC is entered in native system by gas piping, first pass around the acidity in filter A eliminating waste gas,
Alkaline gas composition and particulate matter, then provide kinetic energy through air-introduced machine for waste gas, waste gas is sent into condenser A, reduces at this
Waste gas enters the temperature of adsorption tower, it is ensured that the optimal adsorption temperature of activated carbon, the outlet of condenser A connects gas by gas piping
The entrance of liquid/gas separator A, waste gas cools down condensation, and is separated by the drop that condensation produces, reduces organic constituents dense at this
Degree, reduces the load of adsorption tower, and it is anti-that the outlet of gas-liquid separator A connects ferrum cobalt photocatalyst salinization effect dehalogenation by gas piping
Answering device, waste gas removes halogenated hydrocarbons component therein at this through photocatalyst salinization reaction, and the VOC waste gas after dehalogenation processes can be big
Big its consumption to activated carbon adsorption usefulness of reduction, thus it has been obviously improved the adsorption efficiency of activated carbon, thereafter, waste gas is through process
Control valve control path also enters adsorption tower and starts absorption process, completes the waste gas after adsorption cleaning processes through VOC gas detecting
Discharge after the Concentration Testing of instrument；Meanwhile, steam generator the water vapour produced can be through sequencing valve control path and enter absorption
Tower starts thermal desorption operation, completes the water vapour after thermal desorption and discharges adsorption tower and sequentially enter condenser B, gas-liquid separator B,
The waste liquid of separated generation focuses on, and separates the tail gas produced and discharges；Meanwhile, pure air can be through filter B
Entering native system, and pass sequentially through air compressor machine and exsiccator, air through sequencing valve control path and enters adsorption tower and opens afterwards
Beginning cold blowing step for regeneration, completes the water vapour after cold blowing regeneration and discharges adsorption tower and discharge.
Wherein, PLC automatic control unit uses PLC technology mode, overlaps sequencing valve phases with 17 respectively by light current circuit
Even, the procedure auto-control of sequencing valve switch can be realized, it is not necessary to manual operation.
Wherein, the material of ferrum cobalt photocatalyst salinization effect dehalogenation reactor is 304 type rustless steels, its left lower be provided with into
Air valve, reactor head is separately installed with 1 thin iron powder storage tank and 1 thin cobalt powder storage tank, and two storage tank lower ends are respectively connected with 1
Propping up solid powderject head, reactor central authorities are provided with 1 stirring flabellum, two side are separately installed with 3 blue-ray lights, reaction
Device upper right quarter connects 1 cyclone dust extractor, and cyclone dust extractor lower end is provided with waste residue row's mouth, and cyclone dust extractor right-hand member is provided with aerofluxus
Valve；Industrial waste gas containing VOC is by being positioned at the air intake valve of ferrum cobalt photocatalyst salinization effect dehalogenation reactor left lower
Enter inside reactor, be positioned at the thin iron powder in the thin iron powder storage tank of reactor head and the thin cobalt powder in thin cobalt powder storage tank
End, is injected into inside reactor through pressed powder injector head respectively, with useless under the stirring of the stirring flabellum entreated in the reactor
Gas uniformly mixes, and now, 6 blue-ray lights being positioned on reactor two side are opened, and are 415nm to inside reactor illumination wavelength
Blue light, under this condition, halogenated hydrocarbons in waste gas VOC can and ferrum, cobalt simple substance generation photocatalyst reaction, halogen atom therein
Generate macromolecular complex salt with ferrum, cobalt chemical combination, thus the dehalogenation realizing the VOC waste gas containing halogenated hydrocarbons processes, containing salt
The waste gas of grain is after the process of cyclone dust extractor, and salt granule is arranged through the waste residue being positioned at cyclone dust extractor lower end as waste residue
Mouth is discharged, and the waste gas after dehalogenation processes discharges reactor by being positioned at the drain tap of cyclone dust extractor right-hand member, and enters
Next treatment process.
The complete working period of native system is divided into the three below stage:
(1) adsorption tower A absorption, the condensation of adsorption tower B thermal desorption are reclaimed, adsorption tower C cold blowing regeneration stage:
In this stage, PLC automatic control unit automatically turns on sequencing valve V1, V5, V9, V10, V13, V14, V16, the most automatically closes
Close other sequencing valves.Under this state, the VOC waste gas after ferrum cobalt photocatalyst salinization effect dehalogenation reactor dehalogenation processes is through journey
Control valve V1 enters adsorption tower A, and the acticarbon adsorption cleaning in adsorption tower A processes, and discharges suction through sequencing valve V10
Attached tower A, through VOC gas detector detect its VOC concentration qualified after, through sequencing valve V16 discharge；When giving up that adsorption tower A is discharged
Gas is when the detection of VOC gas detector exceedes VOC emission standard limited value, and alarm signal can be sent by VOC gas detector immediately
To PLC automatic control unit, PLC automatic control unit will make sequencing valve V16 close by transmitting control commands immediately, prevent VOC from surpassing
Target waste gas enters surrounding air, and order sequencing valve V17 opens simultaneously, makes the exhaust gas recirculation that VOC exceeds standard to air-introduced machine entrance
Place, until after VOC gas detector detects that waste gas VOC concentration is up to standard, sending qualifying signal, PLC to PLC automatic control unit
Order sequencing valve V16 is opened by automatic control unit and sequencing valve V17 closes, and tail gas qualified for VOC concentration enters environment empty
Gas.Meanwhile, water vapour produced by steam generator entering adsorption tower B through sequencing valve V5, water vapour is to acticarbon
Heat, make Adsorption Concentration Organic substance in acticarbon heat desorption, rely on the purging effect of steam simultaneously, will
Discharging adsorption tower B containing organic water vapour through sequencing valve V13, this water vapour sequentially enters condenser B, gas-liquid separator B,
The waste liquid of separated generation focuses on, and separates the tail gas produced and discharges.Meanwhile, pure air can sequentially pass through filter
Device B, air compressor machine and exsiccator, and enter adsorption tower C through sequencing valve V9, the acticarbon after thermal desorption processes is entered
Row cold blowing cooling and dried, thus realize the regeneration of acticarbon, complete the air after cold blowing regeneration through sequencing valve
V14 discharges adsorption tower C, and discharges through sequencing valve V16.
(2) adsorption tower C absorption, the condensation of adsorption tower A thermal desorption are reclaimed, adsorption tower B cold blowing regeneration stage:
In this stage, PLC automatic control unit automatically turns on sequencing valve V3, V4, V8, V11, V12, V14, V16, the most automatically closes
Close other sequencing valves.Under this state, the VOC waste gas after ferrum cobalt photocatalyst salinization effect dehalogenation reactor dehalogenation processes is through journey
Control valve V3 enters adsorption tower C, and the acticarbon adsorption cleaning in adsorption tower C processes, and discharges suction through sequencing valve V14
Attached tower C, through VOC gas detector detect its VOC concentration qualified after, through sequencing valve V16 discharge；When giving up that adsorption tower C is discharged
Gas is when the detection of VOC gas detector exceedes VOC emission standard limited value, and alarm signal can be sent by VOC gas detector immediately
To PLC automatic control unit, PLC automatic control unit will make sequencing valve V16 close by transmitting control commands immediately, prevent VOC from surpassing
Target waste gas enters surrounding air, and order sequencing valve V17 opens simultaneously, makes the exhaust gas recirculation that VOC exceeds standard to air-introduced machine entrance
Place, until after VOC gas detector detects that waste gas VOC concentration is up to standard, sending qualifying signal, PLC to PLC automatic control unit
Order sequencing valve V16 is opened by automatic control unit and sequencing valve V17 closes, and tail gas qualified for VOC concentration enters environment empty
Gas.Meanwhile, water vapour produced by steam generator entering adsorption tower A through sequencing valve V4, water vapour is to acticarbon
Heat, make Adsorption Concentration Organic substance in acticarbon heat desorption, rely on the purging effect of steam simultaneously, will
Discharging adsorption tower A containing organic water vapour through sequencing valve V11, this water vapour sequentially enters condenser B, gas-liquid separator B,
The waste liquid of separated generation focuses on, and separates the tail gas produced and discharges.Meanwhile, pure air can sequentially pass through filter
Device B, air compressor machine and exsiccator, and enter adsorption tower B through sequencing valve V8, the acticarbon after thermal desorption processes is entered
Row cold blowing cooling and dried, thus realize the regeneration of acticarbon, complete the air after cold blowing regeneration through sequencing valve
V12 discharges adsorption tower B, and discharges through sequencing valve V16.
(3) adsorption tower B absorption, the condensation of adsorption tower C thermal desorption are reclaimed, adsorption tower A cold blowing regeneration stage:
In this stage, PLC automatic control unit automatically turns on sequencing valve V2, V6, V7, V10, V12, V15, V16, the most automatically closes
Close other sequencing valves.Under this state, the VOC waste gas after ferrum cobalt photocatalyst salinization effect dehalogenation reactor dehalogenation processes is through journey
Control valve V2 enters adsorption tower B, and the acticarbon adsorption cleaning in adsorption tower B processes, and discharges suction through sequencing valve V12
Attached tower B, through VOC gas detector detect its VOC concentration qualified after, through sequencing valve V16 discharge；When giving up that adsorption tower C is discharged
Gas is when the detection of VOC gas detector exceedes VOC emission standard limited value, and alarm signal can be sent by VOC gas detector immediately
To PLC automatic control unit, PLC automatic control unit will make sequencing valve V16 close by transmitting control commands immediately, prevent VOC from surpassing
Target waste gas enters surrounding air, and order sequencing valve V17 opens simultaneously, makes the exhaust gas recirculation that VOC exceeds standard to air-introduced machine entrance
Place, until after VOC gas detector detects that waste gas VOC concentration is up to standard, sending qualifying signal, PLC to PLC automatic control unit
Order sequencing valve V16 is opened by automatic control unit and sequencing valve V17 closes, and tail gas qualified for VOC concentration enters environment empty
Gas.Meanwhile, water vapour produced by steam generator entering adsorption tower C through sequencing valve V6, water vapour is to acticarbon
Heat, make Adsorption Concentration Organic substance in acticarbon heat desorption, rely on the purging effect of steam simultaneously, will
Discharging adsorption tower C containing organic water vapour through sequencing valve V15, this water vapour sequentially enters condenser B, gas-liquid separator B,
The waste liquid of separated generation focuses on, and separates the tail gas produced and discharges.Meanwhile, pure air can sequentially pass through filter
Device B, air compressor machine and exsiccator, and enter adsorption tower A through sequencing valve V7, the acticarbon after thermal desorption processes is entered
Row cold blowing cooling and dried, thus realize the regeneration of acticarbon, complete the air after cold blowing regeneration through sequencing valve
V10 discharges adsorption tower A, and discharges through sequencing valve V16.
Wherein, the dischargeable capacity of adsorption tower is 350m3, its internal adsorbent filled is II type column coal mass active carbon,
Its a diameter of 12 ~ 15mm, specific surface area is 830m2/ g, wear-resisting intensity is more than 98%.
Wherein, the dischargeable capacity of ferrum cobalt photocatalyst salinization effect dehalogenation reactor is 275m3, working pressure range is 9.5 ~
22.0MPa, the running voltage of its blue-ray light is 220V, and blue emission wavelength is 415nm, and working life is about 8500h.
Waste gas after being processed by native system, the removal efficiency of its VOC is up to 99.5%.
It is an advantage of the current invention that:
(1) what native system was creative applies metal photocatalyst salinization effect, by the most equal to ferrum, cobalt metal simple-substance fine powder
Even diffusion, under the irradiation of specific wavelength blue light, the halogenated hydrocarbons in waste gas VOC can be with ferrum, cobalt simple substance generation photocatalyst reaction, its
In halogen atom and ferrum, cobalt chemical combination generate macromolecular complex salt, process completing the dehalogenation of VOC waste gas.Process through dehalogenation
After VOC waste gas can be substantially reduced its consumption to activated carbon adsorption usefulness, thus be obviously improved the adsorption efficiency of activated carbon.
(2) native system controls to carry out automation mechanized operation by PLC, and each processing step is in strict accordance with sequencing contro, and in real time
Detect gas concentration.The signals such as concentration, temperature, pressure, valve position are shown in man machine interface so that the absorption of adsorption tower,
Desorbing circular flow continuously and stably.Integration of equipments electromagnetic valve, pneumatic element execution action, highly reliable simultaneously, easy to operate.
(3) each adsorption column outlet pipeline in native system is equipped with VOC gas detector, when VOC gas detector is examined
When survey result exceeds standard, can report to the police immediately and the adsorption tower that automatically switches, simultaneously close off atmospheric valve, open reflux inlet, air is led back
To blower inlet, until closing warning after gaseous mass is up to standard, and it is emitted into air, it is ensured that the qualified discharge of tail gas.
(4) equipment increases cold blowing regeneration process step, to improve regeneration level and the absorbability of acticarbon.If
The standby technique using pretreatment-activated carbon adsorption-steam stripping-purification air-blowing to sweep, innovatively adds cold blowing regeneration technology step
Suddenly.Activated carbon temperature after steam is desorbed is the highest, humidity is very big, is unfavorable for adsorption operations next time, so sufficiently dry to be used
It is purged by compressed air, makes acticarbon reach to drop the purpose of gently dried, simultaneous with one in purge
The compressed air of constant-pressure can rinse the materials such as the dust being attached to adsorbent surface well the high efficiency that ensure that adsorbent.
(5) native system technology path is advanced, and occupation area of equipment is less, and treatment effect is good, operation expense
Relatively low, be conducive to popularization and application on a large scale.
Accompanying drawing explanation
Fig. 1 is the equipment schematic diagram of the present invention.
In figure: 1-filter A, 2-air-introduced machine, 3-condenser A, 4-gas-liquid separator A, 5-ferrum cobalt photocatalyst salinization effect
Dehalogenation reactor, 6-adsorption tower A, 7-adsorption tower B, 8-adsorption tower C, 9-PLC automatic control unit, 10-VOC gas detector,
11-steam generator, 12-filter B, 13-air compressor machine, 14-exsiccator, 15-condenser B, 16-gas-liquid separator B, V1 ~
V17-sequencing valve
Fig. 2 is the schematic diagram of ferrum cobalt photocatalyst salinization effect dehalogenation reactor.
51-air intake valve, 52-thin iron powder storage tank, 53-thin cobalt powder storage tank, 54-pressed powder injector head, 55-blue-ray light,
56-stirring flabellum, 57-cyclone dust extractor, 58-waste residue row mouth, 59-drain tap.
Detailed description of the invention
As shown in Figure 1 remove the cleaning system of VOC in industrial waste gas, this system includes filter A1, air-introduced machine 2, cold
Condenser A3, gas-liquid separator A4, ferrum cobalt photocatalyst salinization effect dehalogenation reactor 5, adsorption tower A6, adsorption tower B7, adsorption tower C8,
PLC automatic control unit 9, VOC gas detector 10, steam generator 11, filter B 12, air compressor machine 13, exsiccator 14, cold
Condenser B15, gas-liquid separator B16 and 17 set sequencing valve V1 ~ V17 etc.；Wherein, the industrial waste gas containing VOC passes through gas tube
Road enters in native system, first passes around the acidity in filter A1 eliminating waste gas, alkaline gas composition and particulate matter, then through drawing
Blower fan 2 provides kinetic energy for waste gas, and waste gas is sent into condenser A3, reduces waste gas at this and enters the temperature of adsorption tower, it is ensured that activity
The optimal adsorption temperature of charcoal, the outlet of condenser A3 connects the entrance of gas-liquid separator A4 by gas piping, and waste gas is cold at this
But condensing, and separated by the drop that condensation produces, reduce organic constituents concentration, reduce the load of adsorption tower, gas-liquid is divided
From device A4 outlet by gas piping connect ferrum cobalt photocatalyst salinization effect dehalogenation reactor 5, waste gas at this through photocatalyst salt
Changing reaction and remove halogenated hydrocarbons component therein, the VOC waste gas after dehalogenation processes can be substantially reduced it and imitate activated carbon adsorption
The consumption of energy, thus it has been obviously improved the adsorption efficiency of activated carbon, thereafter, waste gas is through sequencing valve control path and enters absorption
Tower starts absorption process, completes the waste gas after adsorption cleaning processes and discharges after the Concentration Testing of VOC gas detector 10；With
Time, steam generator 11 water vapour produced can be complete through sequencing valve control path thermal desorption operation entering adsorption tower
The water vapour after thermal desorption is become to discharge adsorption tower and sequentially enter condenser B15, gas-liquid separator B16, giving up of separated generation
Liquid focuses on, and separates the tail gas produced and discharges；Meanwhile, pure air can enter native system through filter B12, and
Passing sequentially through air compressor machine 13 and exsiccator 14, air through sequencing valve control path and enters adsorption tower and starts cold blowing regeneration afterwards
Operation, completes the water vapour after cold blowing regeneration and discharges adsorption tower and discharge；Wherein, PLC automatic control unit 9 uses programmable control
Mode processed, is connected with 17 set sequencing valves respectively by light current circuit, can realize the procedure auto-control of sequencing valve switch, it is not necessary to people
Work operates.Wherein, the material of ferrum cobalt photocatalyst salinization effect dehalogenation reactor 5 is 304 type rustless steels, its left lower be provided with into
Air valve 51, reactor head is separately installed with 1 thin iron powder storage tank 52 and 1 thin cobalt powder storage tank 53, and two storage tank lower ends are equal
Connecting and have 1 solid powderject head 54, reactor central authorities are provided with 1 stirring flabellum 56, and two side is separately installed with 3
Blue-ray light 55, reactor upper right quarter connects has 1 cyclone dust extractor 57, cyclone dust extractor 57 lower end to be provided with waste residue row's mouth 58, rotation
Wind cleaner unit 57 right-hand member is provided with drain tap 59；Industrial waste gas containing VOC is by being positioned at ferrum cobalt photocatalyst salinization effect dehalogenation
The air intake valve 51 of reactor 5 left lower enters inside reactor, and be positioned in the thin iron powder storage tank 52 of reactor head is thin
Thin cobalt dust in iron powder and thin cobalt powder storage tank 53, is injected into inside reactor through pressed powder injector head 54 respectively,
Uniformly mix with waste gas under the stirring of the stirring flabellum 56 of reactor central authorities, now, 6 blue lights being positioned on reactor two side
Lamp 55 is opened, and is the blue light of 415nm to inside reactor illumination wavelength, under this condition, halogenated hydrocarbons in waste gas VOC can and
Ferrum, cobalt simple substance generation photocatalyst reaction, halogen atom therein and ferrum, cobalt chemical combination generate macromolecular complex salt, thus realize containing
Have halogenated hydrocarbons VOC waste gas dehalogenation process, the waste gas containing salt granule after the process of cyclone dust extractor 57, salt
Grain is discharged through the waste residue row's mouth 58 being positioned at cyclone dust extractor 57 lower end as waste residue, and the waste gas after dehalogenation processes passes through position
Drain tap 59 in cyclone dust extractor 57 right-hand member discharges reactor, and enters next treatment process；Wherein, adsorption tower is effective
Volume is 350m3, its internal adsorbent filled is II type column coal mass active carbon, and its a diameter of 12 ~ 15mm, specific surface area is
830m2/ g, wear-resisting intensity is more than 98%；Wherein, the dischargeable capacity of ferrum cobalt photocatalyst salinization effect dehalogenation reactor is 275m3, work
Being 9.5 ~ 22.0MPa as pressure limit, the running voltage of its blue-ray light is 220V, and blue emission wavelength is 415nm, working life
It is about 8500h.
The complete working period of native system is divided into the three below stage:
(1) adsorption tower A6 absorption, the condensation of adsorption tower B7 thermal desorption are reclaimed, adsorption tower C8 cold blowing regeneration stage:
In this stage, PLC automatic control unit 9 automatically turns on sequencing valve V1, V5, V9, V10, V13, V14, V16, the most automatically
Close other sequencing valves.VOC waste gas under this state, after ferrum cobalt photocatalyst salinization effect dehalogenation reactor 5 dehalogenation processes
Entering adsorption tower A6 through sequencing valve V1, the acticarbon adsorption cleaning in adsorption tower A6 processes, and through sequencing valve V10
Discharge adsorption tower A6, through VOC gas detector 10 detect its VOC concentration qualified after, through sequencing valve V16 discharge；As adsorption tower A6
The waste gas discharged is when VOC gas detector 10 detection exceedes VOC emission standard limited value, and VOC gas detector 10 can immediately
Alarm signal being sent to PLC automatic control unit 9, PLC automatic control unit 9 will make sequencing valve by transmitting control commands immediately
V16 closes, and the waste gas preventing VOC from exceeding standard enters surrounding air, and order sequencing valve V17 opens simultaneously, makes the waste gas that VOC exceeds standard
It is back to air-introduced machine 2 porch, until after VOC gas detector 10 detects that waste gas VOC concentration is up to standard, automatically controlling to PLC
Unit 9 sends qualifying signal, and order sequencing valve V16 is opened by PLC automatic control unit 9 and sequencing valve V17 closes, and VOC is dense
Spend qualified tail gas and enter surrounding air.Meanwhile, water vapour produced by steam generator 11 absorption is entered through sequencing valve V5
Tower B7, acticarbon is heated by water vapour, makes Adsorption Concentration Organic substance in acticarbon heat desorption,
Relying on the purging effect of steam simultaneously, will discharge adsorption tower B7 containing organic water vapour through sequencing valve V13, this water vapour depends on
Secondary entrance condenser B15, gas-liquid separator B16, the waste liquid of separated generation focuses on, and separates the tail gas produced and carries out
Discharge.Meanwhile, pure air can sequentially pass through filter B12, air compressor machine 13 and exsiccator 14, and enters adsorption tower through sequencing valve V9
C8, carries out cold blowing cooling and dried to the acticarbon after thermal desorption processes, thus realizes activated carbon adsorption
The regeneration of agent, completes the air after cold blowing regeneration and discharges adsorption tower C8 through sequencing valve V14, and discharge through sequencing valve V16.
(2) adsorption tower C8 absorption, the condensation of adsorption tower A6 thermal desorption are reclaimed, adsorption tower B7 cold blowing regeneration stage:
In this stage, PLC automatic control unit 9 automatically turns on sequencing valve V3, V4, V8, V11, V12, V14, V16, the most automatically
Close other sequencing valves.VOC waste gas under this state, after ferrum cobalt photocatalyst salinization effect dehalogenation reactor 5 dehalogenation processes
Entering adsorption tower C8 through sequencing valve V3, the acticarbon adsorption cleaning in adsorption tower C8 processes, and through sequencing valve V14
Discharge adsorption tower C8, through VOC gas detector 10 detect its VOC concentration qualified after, through sequencing valve V16 discharge；As adsorption tower C8
The waste gas discharged is when VOC gas detector 10 detection exceedes VOC emission standard limited value, and VOC gas detector 10 can immediately
Alarm signal being sent to PLC automatic control unit 9, PLC automatic control unit 9 will make sequencing valve by transmitting control commands immediately
V16 closes, and the waste gas preventing VOC from exceeding standard enters surrounding air, and order sequencing valve V17 opens simultaneously, makes the waste gas that VOC exceeds standard
It is back to air-introduced machine 2 porch, until after VOC gas detector 10 detects that waste gas VOC concentration is up to standard, automatically controlling to PLC
Unit 9 sends qualifying signal, and order sequencing valve V16 is opened by PLC automatic control unit 9 and sequencing valve V17 closes, and VOC is dense
Spend qualified tail gas and enter surrounding air.Meanwhile, water vapour produced by steam generator 11 absorption is entered through sequencing valve V4
Tower A6, acticarbon is heated by water vapour, makes Adsorption Concentration Organic substance in acticarbon heat desorption,
Relying on the purging effect of steam simultaneously, will discharge adsorption tower A6 containing organic water vapour through sequencing valve V11, this water vapour depends on
Secondary entrance condenser B15, gas-liquid separator B16, the waste liquid of separated generation focuses on, and separates the tail gas produced and carries out
Discharge.Meanwhile, pure air can sequentially pass through filter B12, air compressor machine 13 and exsiccator 14, and enters adsorption tower through sequencing valve V8
B7, carries out cold blowing cooling and dried to the acticarbon after thermal desorption processes, thus realizes activated carbon adsorption
The regeneration of agent, completes the air after cold blowing regeneration and discharges adsorption tower B7 through sequencing valve V12, and discharge through sequencing valve V16.
(3) adsorption tower B7 absorption, the condensation of adsorption tower C8 thermal desorption are reclaimed, adsorption tower A6 cold blowing regeneration stage:
In this stage, PLC automatic control unit 9 automatically turns on sequencing valve V2, V6, V7, V10, V12, V15, V16, the most automatically
Close other sequencing valves.VOC waste gas under this state, after ferrum cobalt photocatalyst salinization effect dehalogenation reactor 5 dehalogenation processes
Entering adsorption tower B7 through sequencing valve V2, the acticarbon adsorption cleaning in adsorption tower B7 processes, and through sequencing valve V12
Discharge adsorption tower B7, through VOC gas detector 10 detect its VOC concentration qualified after, through sequencing valve V16 discharge；As adsorption tower C8
The waste gas discharged is when VOC gas detector 10 detection exceedes VOC emission standard limited value, and VOC gas detector 10 can immediately
Alarm signal being sent to PLC automatic control unit 9, PLC automatic control unit 9 will make sequencing valve by transmitting control commands immediately
V16 closes, and the waste gas preventing VOC from exceeding standard enters surrounding air, and order sequencing valve V17 opens simultaneously, makes the waste gas that VOC exceeds standard
It is back to air-introduced machine 2 porch, until after VOC gas detector 10 detects that waste gas VOC concentration is up to standard, automatically controlling to PLC
Unit 9 sends qualifying signal, and order sequencing valve V16 is opened by PLC automatic control unit 9 and sequencing valve V17 closes, and VOC is dense
Spend qualified tail gas and enter surrounding air.Meanwhile, water vapour produced by steam generator 11 absorption is entered through sequencing valve V6
Tower C8, acticarbon is heated by water vapour, makes Adsorption Concentration Organic substance in acticarbon heat desorption,
Relying on the purging effect of steam simultaneously, will discharge adsorption tower C8 containing organic water vapour through sequencing valve V15, this water vapour depends on
Secondary entrance condenser B15, gas-liquid separator B16, the waste liquid of separated generation focuses on, and separates the tail gas produced and carries out
Discharge.Meanwhile, pure air can sequentially pass through filter B12, air compressor machine 13 and exsiccator 14, and enters adsorption tower through sequencing valve V7
A6, carries out cold blowing cooling and dried to the acticarbon after thermal desorption processes, thus realizes activated carbon adsorption
The regeneration of agent, completes the air after cold blowing regeneration and discharges adsorption tower A6 through sequencing valve V10, and discharge through sequencing valve V16.
Waste gas after being processed by native system, the removal efficiency of its VOC is up to 99.5%.
Claims (5)
1. remove the cleaning system of VOC in industrial waste gas for one kind, it is characterised in that this system includes filter A, air-introduced machine, cold
Condenser A, gas-liquid separator A, ferrum cobalt photocatalyst salinization effect dehalogenation reactor, adsorption tower A, adsorption tower B, adsorption tower C, PLC are certainly
Dynamic control unit, VOC gas detector, steam generator, filter B, air compressor machine, exsiccator, condenser B, gas-liquid separator B
And 17 set sequencing valves etc.；Wherein, the industrial waste gas containing VOC is entered in native system by gas piping, first passes sequentially through
Filter A, air-introduced machine, condenser A, gas-liquid separator A and ferrum cobalt photocatalyst salinization effect dehalogenation reactor, waste gas warp afterwards
Cross sequencing valve control path and enter adsorption tower and start absorption process, completing the waste gas after adsorption cleaning processes through VOC gas
Discharge after the Concentration Testing of detector；The water vapour simultaneously produced by steam generator can be through sequencing valve control path and enter suction
Attached tower starts thermal desorption operation, completes the water vapour after thermal desorption and discharges adsorption tower and sequentially enter condenser B, gas-liquid separator
B, the waste liquid of separated generation focuses on, and separates the tail gas produced and discharges；Meanwhile, pure air can be through filter
B enters native system, and passes sequentially through air compressor machine and exsiccator, and air through sequencing valve control path and enters adsorption tower and opens afterwards
Beginning cold blowing step for regeneration, completes the water vapour after cold blowing regeneration and discharges adsorption tower and discharge；Wherein, PLC automatic control unit leads to
Cross light current circuit to be connected with 17 set sequencing valves respectively, the procedure auto-control of sequencing valve switch can be realized, it is not necessary to manual operation.
The cleaning system of VOC in removal industrial waste gas the most according to claim 1, it is characterised in that ferrum cobalt photocatalyst salt
Changing effect dehalogenation reactor left lower and be provided with air intake valve, it is thin that reactor head is separately installed with 1 thin iron powder storage tank and 1
Cobalt powder storage tank, two storage tank lower ends are respectively connected with 1 solid powderject head, reactor central authorities be provided with 1 stirring flabellum, two
Being separately installed with 3 blue-ray lights on sidewall, reactor upper right quarter connects 1 cyclone dust extractor, and cyclone dust extractor lower end is provided with
Waste residue row's mouth, cyclone dust extractor right-hand member is provided with drain tap.
The cleaning system of VOC in removal industrial waste gas the most according to claim 2, it is characterised in that containing the industry of VOC
Waste gas enters inside reactor by being positioned at the air intake valve of ferrum cobalt photocatalyst salinization effect dehalogenation reactor left lower, is positioned at
Thin iron powder in the thin iron powder storage tank of reactor head and the thin cobalt dust in thin cobalt powder storage tank, spray through pressed powder respectively
Head is injected into inside reactor, uniformly mixes with waste gas, be now placed in anti-under the stirring of the stirring flabellum entreated in the reactor
Answer 6 blue-ray lights on device two side to open, irradiate the blue light of specific wavelength, the halogenated hydrocarbons in waste gas VOC to inside reactor
Can be with ferrum, cobalt simple substance generation photocatalyst reaction, halogen atom therein generates macromolecular complex salt with ferrum, cobalt chemical combination, thus real
Now contain halogenated hydrocarbons VOC waste gas dehalogenation process, the waste gas containing salt granule after the process of cyclone dust extractor, salt
Granule is discharged through the waste residue row's mouth being positioned at cyclone dust extractor lower end as waste residue, and the waste gas after dehalogenation processes is by being positioned at
The drain tap of cyclone dust extractor right-hand member discharges reactor, and enters next treatment process.
The cleaning system of VOC in removal industrial waste gas the most according to claim 1, it is characterised in that adsorption tower effective
Volume is 350m3, its internal adsorbent filled is II type column coal mass active carbon, and its a diameter of 12 ~ 15mm, specific surface area is
830m2/ g, wear-resisting intensity is more than 98%.
The cleaning system of VOC in removal industrial waste gas the most according to claim 1, it is characterised in that ferrum cobalt photocatalyst salt
The dischargeable capacity changing effect dehalogenation reactor is 275m3, working pressure range is 9.5 ~ 22.0MPa, the work electricity of its blue-ray light
Pressure is 220V, and blue emission wavelength is 415nm.
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| CN106769389A (en) * | 2017-02-08 | 2017-05-31 | 朱山 | One kind quickly catches up with sour instrument |
| CN107607435A (en) * | 2017-10-18 | 2018-01-19 | 宁夏回族自治区产品质量监督检验院 | A kind of device for fast detecting of charcoal absorption rate and desorption rate |
| CN108211786A (en) * | 2018-03-23 | 2018-06-29 | 上海映山环保科技有限公司 | A kind of powder photocatalyst organic exhaust gas photocatalytic oxidation device |
| CN109012024A (en) * | 2018-09-05 | 2018-12-18 | 无锡中天固废处置有限公司 | A kind of energy-efficient high-boiling-point waste organic gas processing system |
| CN109200746A (en) * | 2018-11-07 | 2019-01-15 | 无锡四方集团有限公司 | The technique and equipment of active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation |
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| CN106769389A (en) * | 2017-02-08 | 2017-05-31 | 朱山 | One kind quickly catches up with sour instrument |
| CN107607435A (en) * | 2017-10-18 | 2018-01-19 | 宁夏回族自治区产品质量监督检验院 | A kind of device for fast detecting of charcoal absorption rate and desorption rate |
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| CN109012024A (en) * | 2018-09-05 | 2018-12-18 | 无锡中天固废处置有限公司 | A kind of energy-efficient high-boiling-point waste organic gas processing system |
| CN109200746A (en) * | 2018-11-07 | 2019-01-15 | 无锡四方集团有限公司 | The technique and equipment of active carbon in-situ desorption and regeneration after a kind of activated carbon adsorption volatile organic matter and adsorption saturation |
| CN109806715A (en) * | 2019-03-06 | 2019-05-28 | 苏州弘维环境科技有限公司 | A kind of exhaust-gas treatment special-purpose activated charcoal Adsorption Concentration nitrogen desorption condensing unit |
| CN113019119A (en) * | 2021-03-26 | 2021-06-25 | 上海统源科技有限公司 | Triple duplex reaction method in electrochemical atmosphere |
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