CN108211686A - A kind of tail gas photooxidation cracking purification method - Google Patents

A kind of tail gas photooxidation cracking purification method Download PDF

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Publication number
CN108211686A
CN108211686A CN201711266598.9A CN201711266598A CN108211686A CN 108211686 A CN108211686 A CN 108211686A CN 201711266598 A CN201711266598 A CN 201711266598A CN 108211686 A CN108211686 A CN 108211686A
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exhaust gas
module
gas
fluorescent tube
ultraviolet lamp
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汪传生
郭磊
张鲁琦
李海涛
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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Priority to CN201711266598.9A priority Critical patent/CN108211686A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/007Separation 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60Combinations of devices covered by groups B01D46/00 and B01D47/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/26Drying gases or vapours
    • B01D53/266Drying gases or vapours by filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/30Controlling by gas-analysis apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/76Gas phase processes, e.g. by using aerosols
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8678Removing components of undefined structure
    • B01D53/8687Organic components
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8696Controlling the catalytic process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/10Oxidants
    • B01D2251/104Ozone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/20Metals or compounds thereof
    • B01D2255/207Transition metals
    • B01D2255/20707Titanium
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2255/00Catalysts
    • B01D2255/80Type of catalytic reaction
    • B01D2255/802Photocatalytic
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804UV light

Abstract

The invention discloses a kind of tail gas photooxidation cracking purification method, 1) factory's organic exhaust gas enters front end spray column, and the dust particle in organic exhaust gas is fixed in spray liquid;2) organic exhaust gas after rough dusting enters photooxidation cracking cabinet progress off-gas oxidizing processing by air hose;3) the 2) in step processing procedure, and signal detection exhaust gas concentration and will be fed back to the regular combination open and close of fluorescent tube in single-chip computer control system, control high energy ultraviolet lamp group module, ozone supply module by the exhaust gas concentration detection sensor mounted on photooxidation cracking cabinet inlet in real time;4) gas after processing enters the fixation that dry method flue gas integrated treatment tank realizes sulphur, nitrogen oxides under the action of air-introduced machine, and the gas that system discharge standard is not achieved enters front end cycle.The service life that can be realized the energy-efficient operation of whole system, extend lamp group module of the present invention, improves VOCs treatment effect, and secondary pollution problem caused by avoiding conventional wet technique realizes ultra-clean discharge.

Description

A kind of tail gas photooxidation cracking purification method
Technical field
The present invention relates to technical field of waste gas treatment, specifically a kind of tail gas photooxidation cracking purification method.
Background technology
Atmosphere pollution is one of China's environmental problem most prominent at present.Wherein industrial waste gas is the important of atmosphere pollution Source.Most intractable in industrial waste gas is exactly organic exhaust gas, is mainly derived from petrochemical industry rubber industry production process and arranges The exhaust gas put, organic exhaust gas are not only caused outside direct atmosphere pollution, and it is secondary also to participate in complicated reaction generation in an atmosphere Pollutant becomes one of main source of PM2.5.Therefore, the processing of organic exhaust gas and purifying problem are urgently to be resolved hurrily.
Traditional organic waste-gas purification processing means mainly include:Direct high-temperature combustion method, catalytic oxidation, ozone deodorizing Method, active carbon adsorption, soda acid liquid spray process, biological odor removal method etc..There are equipment investments to varying degrees for these methods High, operating cost height, processing is narrow-minded, job insecurity, occupied space is big, deodorization purification efficiency is not high, there are secondary pollutions The problems such as.At present, novel ultraviolet light exhaust treatment system has obtained more and more applications, by big after UV treatment The strand of molecule organic exhaust gas, which is interrupted, becomes small molecule contaminants, can be by the row of exhaust gas using the processing of follow-up equipment It puts and is reduced to a very low level.
In Chinese patent literature, CN103505990A is related to a kind of UV-VOC emission-control equipments, including babinet, described Photodissociation is equipped in babinet and aoxidizes fission chamber, the photodissociation oxidation fission chamber is connected by pipeline with waste gas inlet;Described Excitation high-pressure installation is equipped in photodissociation oxidation fission chamber, organic exhaust gas is decomposed to fission;Control is additionally provided on the babinet System, the control system include master controller, B/P EGR Back Pressure Transducer EGR, photoelectric sensor, realize the overall operation to the equipment And security control.The present invention aoxidizes fission chamber by photodissociation effectively realizes the purified treatment of exhaust gas, and organic exhaust gas is abundant Oxidation fission discharge, it is pollution-free;The filtering and separation of exhaust gas are realized by pretreatment section, for follow-up photodissociation oxidation fission processing system System creates conditions to the processing of exhaust gas;The application of water circulation system doubles to extend the use of photodissociation oxidation fission device handling system Service life.CN104667674B is related to technical field of air purification processing, more particularly, to coating waste gas treatment process and its device, Including paint mist treatment, the dust particles in exhaust gas are handled by water spray;Photocatalysis treatment makes organic or inorganic high score in exhaust gas Sub- malodorous compound molecular chain degradation is transformed into low molecular compound, is thus modified as hydrophily gas;And at gas-liquid mixed Reason, removes the peculiar smell in removing exhaust gas, exhaust-gas treatment is more thorough.Its device has a paint mist treatment tower, a photocatalysis treatment device and one Gas-liquid mixed processor, the coaxial word of three are connected successively, form sealing channel, according to above-mentioned process coating waste gas, knot Structure is simple, easily makes, and clean-up effect is good, is applicable in industrial waste gas processing.CN105964120A discloses a kind of exhaust-gas treatment system System, including alkali spray column, plant liquid spraying tower, photocatalytic oxidation device, wind turbine and chimney, the alkali spray column, vegetation water spray Leaching tower, photocatalytic oxidation device, wind turbine and chimney are sequentially connected.The present invention is compared with traditional technology, design science, handles exhaust gas Effect is apparent, soda acid is handled, biochemical treatment and Treatment by Photocatalysis Oxidation combine in a system, can fully handle mixed Mould assembly exhaust gas discharges after being allowed to up to standard.Entitled " combined plastic granulation waste gas cleaning system ", publication number The utility model patent of CN205550040U discloses a kind of technical solution, including spray scrubber and whirlwind aqueous vapor separation dress It puts, waste gas treatment equipment, waste gas treatment equipment includes activated carbon adsorption storehouse, UV photooxidations catalysis storehouse and low-temperature plasma equipment.On The technology of stating can effectively remove smog and debirs in exhaust gas.But above-mentioned technical proposal intelligentized control method level is very low, no The processing power of ultraviolet equipment can be controlled in real time according to pollutant concentration, the waste or pollutant process for causing the energy do not reach Target problem.In addition by ultraviolet equipment treated exhaust gas in discharge because conventional wet equipment for after-treatment (is generally adopted With scrubbing tower) limitation can also pollute object with water mist of gas flowing discharge caused by secondary pollution problem.
Invention content
In order to solve the above technical problem, the present invention provides a kind of tail gas photooxidation cracking purification methods, it is therefore an objective to realize tail Gas detection, the intelligentized control method of tail gas photooxidation cracking, available for the cracking such as waste rubber and waste plastic in chemical plant exhaust gas, rubber The vent gas treatment of tail gas and catering trade in processing and reclaimed rubber process;It effectively saves the energy, improve working efficiency, Realize the ultra-clean discharge of exhaust gas.
In order to achieve the above objectives, technical scheme is as follows:
A kind of tail gas photooxidation cracking purification method, including:
1) factory's organic exhaust gas enters the front end spray column, and front end spray column is by spraying the dust in organic exhaust gas Particulate matter is fixed in spray liquid;
2) organic exhaust gas after rough dusting enters photooxidation cracking cabinet by air hose, and organic exhaust gas is cracked by photooxidation The further dedusting filter of the dust-proof filter wet web of cabinet entrance is wet, and high energy ultraviolet lamp group module is by organic exhaust gas macromolecular chain rupture, ozone Supplying module further aoxidizes the small molecule exhaust gas after chain rupture, TiO2Catalysis net participates in catalysis, and organic exhaust gas is broken down into CO2、 H2O, sulfur oxide, nitrogen oxide;
3) in the 2) step processing procedure, the exhaust gas concentration detection sensor mounted on photooxidation cracking cabinet inlet will be real-time Signal is simultaneously fed back to single-chip computer control system by detection exhaust gas concentration, and single-chip computer control system is accordingly dense according to input-signal judging Degree range simultaneously enables the control program of autonomous optimization design to control high energy ultraviolet lamp group module, ozone supply module regular Combination open and close, realize the energy-efficient processing to organic exhaust gas;
4) gas after processing enters the dry method flue gas integrated treatment tank under the action of the suction type air-introduced machine Realize the fixation of sulphur, nitrogen oxides.
5) such as treated, and the minimum exhaust gas concentration discharge standard of default, Intelligent control cabinet control is not achieved in gas concentration The pipe switch that gas is discharged into air side by three-way electromagnetic switch valve processed is closed, the air inlet duct side with front end spray column The tracheae of connected three-way electromagnetic switch valve connection is open-minded, is given to so as to which untreated gas up to standard be made to pass through pipeline and convey again Leading portion processing equipment is handled again, until the detection numerical value of postposition exhaust gas concentration detection sensor meets the concentration mark of default Quasi- value, the final ultra-clean discharge realized after VOCs treatment.
Compared to the prior art, design of this programme based on intelligent control, single-chip computer control system crack cabinet by photooxidation The feedback signal of the sensor of inlet detection pollutant concentration, controls the regular combination open and close of lamp group module, realization pair The energy-efficient processing of organic exhaust gas.In addition, gas after processing enters dry method flue gas General Office under the action of air-introduced machine It manages in tank, sulfur oxide is fixed up, leaking for sulfur oxide caused by avoiding traditional spray process will handle clean gas Body is discharged into air.Dust particle in factory's organic exhaust gas is fixed on by spray liquid by spray using front end spray column In, carry out rough dusting.This programme is conducive to extend the service life of lamp group module, improves VOCs treatment effect.Pass through Experimental studies have found that the service life of lamp group module can be extended 30%, VOCs treatment effect promoting 23%.
Based on said program, the present invention is also made that following improvement:
It is equal that the fluorescent tube layout that the high energy ultraviolet lamp group module and ozone supply module fluorescent tube are opened follows spatial distribution Even property principle.The feedback signal for detecting the sensor of exhaust gas concentration in cabinet inlet, photooxidation are cracked by photooxidation in this improvement project The Intelligent control cabinet for installing single-chip computer control system is additionally provided in cracking cabinet, utilizes the control of the autonomous optimization design of microcontroller Program controls the regular combination open and close of quartz burner, energetic ion pipe.The unlatching of fluorescent tube follows uniform spatial distribution Principle be in order to ensure reaction uniformity.
The high energy ultraviolet lamp group module includes 3 groups including 4 groups, ozone supply module, and every group of lamp group includes 4 lamps Pipe, control fluorescent tube open method are:
When exhaust gas concentration is 0-150mg/m3;In high energy ultraviolet lamp group module, every group is only opened 1 fluorescent tube, and all The lamp strip position that the fluorescent tube that group is opened is opened differs, and arranges integral into " W " or " M " type;In ozone supply module, only open 1 fluorescent tube among first group and third group, the lamp strip position of unlatching are staggered;
When exhaust gas concentration is 150-200mg/m3, in high energy ultraviolet lamp group module, 2 fluorescent tubes of every group of unlatching, integral into “>" and "<" staggered;In ozone supply module, 2 fluorescent tubes in first group and second group, the lamp strip position of unlatching are opened “>" or "<" type;
When exhaust gas concentration is 200-250mg/m3, in high energy ultraviolet lamp group module, first group and third group fluorescent tube it is whole It opens, second group and the 4th group is opened 2 fluorescent tubes and fluorescent tube is staggered;In ozone supply module, every group is opened 2 lamps Pipe, integral into ">" and "<" staggered;
When exhaust gas concentration is 250mg/m3More than, all fluorescent tubes of high energy ultraviolet lamp group module are opened;Ozone supply mould In block, first group of fluorescent tube is all turned on, and second group and third group fluorescent tube open 2 fluorescent tubes, second and third group of fluorescent tube arrangement is in “>" or "<" type.
The photooxidation cracking cabinet inlet is equipped with the dust-proof filter wet web of changeable type.Prevented in this improvement project using changeable type Dirt filters wet web, and to exhaust gas, further dedusting filter is wet, and protection photooxidation cracking cabinet avoids excessive moisture from causing the accident of lamp group module Electric discharge ensures the suitable working environment of photooxidation cracking cabinet.
TiO is evenly distributed between the lamp group module2Catalysis net, TiO2Catalysis net participates in catalysis, and organic exhaust gas is divided It solves as CO2、H2O, sulfur oxide, nitrogen oxide.In TiO in this improvement project2To organic waste under the catalytic action of catalysis net The macromolecular of gas carries out highly efficient destruction and oxidation, improves efficiency.
The air-introduced machine is suction type air-introduced machine.The gas mobilization dynamic of package unit is drawn by suction type in this improvement project Wind turbine provides, and due to the presence of negative pressure, ensures that untreated organic exhaust gas will not be outer in photooxidation cracking cabinet or even package unit It lets out, causes the pollution of environment.
Single-chip computer control system in the Intelligent control cabinet is able to record exhaust gas still not up to standard after tail gas clean-up The function of component, when carrying out the vent gas treatment of same sample ingredient next time, single-chip computer control system control high energy ultraviolet lamp group mould Block and ozone supply module are handled according to higher than rank unlatching fluorescent tube where this exhaust gas concentration.
Description of the drawings
Equipment three-dimensional structure diagram included in Fig. 1 present invention
Fig. 2 photooxidation cracking cabinet box house three-dimensional structure diagrams of the present invention
Fig. 3 high energy ultraviolet lamp group module three-dimensional structure diagrams of the present invention
The high energy ultraviolet lamp group module of Fig. 4 present invention and ozone supply module lamp group structure chart
In figure, 1, front end spray column, 2, exhaust gas concentration detection sensor, 3, photooxidation cracking cabinet, 4, dust-proof filter wet web, 5, high Can ultraviolet lamp group module, 6, ozone supply module, 7, TiO2Catalysis net, 8, Intelligent control cabinet, 9, suction type air-introduced machine, 10, Dry method flue gas integrated treatment tank, 11, postposition exhaust gas concentration detection sensor, 12, three-way electromagnetic switch valve.
Specific embodiment
The specific implementation of the present invention is further described below in conjunction with the accompanying drawings.
A kind of tail gas photooxidation cracking purification method, including,
1) factory's organic exhaust gas enters the front end spray column 1, and front end spray column 1 is by spraying the powder in organic exhaust gas Dirt particulate matter is fixed in spray liquid;
2) organic exhaust gas after rough dusting enters photooxidation cracking cabinet 3 by air hose, and organic exhaust gas is split by photooxidation 4 further dedusting of the dust-proof filter wet web filter for solving 3 entrance of cabinet is wet, high energy ultraviolet lamp group module 5 by organic exhaust gas macromolecular chain rupture, Ozone supply module 6 further aoxidizes the small molecule exhaust gas after chain rupture;
3) in the 2) step processing procedure, the exhaust gas concentration detection sensor 2 mounted on photooxidation cracking cabinet inlet will be real When detection exhaust gas concentration and signal is fed back into single-chip computer control system, single-chip computer control system is corresponding according to input-signal judging Concentration range simultaneously enables the control program of autonomous optimization design high energy ultraviolet lamp group module 5, ozone supply module 6 to be controlled to have The energy-efficient processing to organic exhaust gas is realized in the combination open and close of rule;
4) gas after processing is realized under the action of the air-introduced machine 9 into the dry method flue gas integrated treatment tank 10 The fixation of sulphur, nitrogen oxides;
5) such as treated, and the minimum exhaust gas concentration discharge standard of default, Intelligent control cabinet control is not achieved in gas concentration The pipe switch that gas is discharged into air side by three-way electromagnetic switch valve processed is closed, the air inlet duct side with front end spray column The tracheae of connected three-way electromagnetic switch valve connection is open-minded, is given to so as to which untreated gas up to standard be made to pass through pipeline and convey again Leading portion processing equipment is handled again, until the detection numerical value of postposition exhaust gas concentration detection sensor meets the concentration mark of default Quasi- value, the final ultra-clean discharge realized after VOCs treatment.
As shown in Figure 2,3, wherein, described the 3) high energy ultraviolet lamp group module includes 4 groups, ozone supply module packet in step 3 groups are included, every group of lamp group includes 4 fluorescent tubes, and control fluorescent tube open method is:
When exhaust gas concentration is 0-150mg/m3;In high energy ultraviolet lamp group module, every group is only opened 1 fluorescent tube, and all The lamp strip position that the fluorescent tube that group is opened is opened differs, and arranges integral into " W " or " M " type;In ozone supply module, only open 1 fluorescent tube among first group and third group, the lamp strip position of unlatching are staggered;
When exhaust gas concentration is 150-200mg/m3, in high energy ultraviolet lamp group module, 2 fluorescent tubes of every group of unlatching, integral into “>" and "<" staggered;In ozone supply module, 2 fluorescent tubes in first group and second group, the lamp strip position of unlatching are opened “>" or "<" type;
When exhaust gas concentration is 200-250mg/m3, in high energy ultraviolet lamp group module, first group and third group fluorescent tube it is whole It opens, second group and the 4th group is opened 2 fluorescent tubes and fluorescent tube is staggered;In ozone supply module, every group is opened 2 lamps Pipe, integral into ">" and "<" staggered;
When exhaust gas concentration is 250mg/m3More than, all fluorescent tubes of high energy ultraviolet lamp group module are opened;Ozone supply mould In block, first group of fluorescent tube is all turned on, and second group and third group fluorescent tube open 2 fluorescent tubes, second and third group of fluorescent tube arrangement is in “>" or "<" type.As shown in Figure 1, TiO is equipped between high energy ultraviolet lamp group module 5, the lamp group module of ozone supply module 62 Catalysis net, TiO2Catalysis net 7 participates in catalysis, and organic exhaust gas is broken down into CO2、H2O, sulfur oxide, nitrogen oxide.Humidity Influence TiO2The catalytic efficiency of catalysis net, TiO2Surface hydrophilic, to water strong adsorption, when water content increases, hydrone and toluene Molecule is in TiO2Adsorption competes, and hinders absorption of the toluene molecule in catalyst surface active position so that surface reaction rate Decline, therefore, by the setting for the filter screen that dehumidifies in the present embodiment, filter wet process is carried out to exhaust gas.The photooxidation cracking cabinet enters The dust-proof filter wet web of changeable type is equipped at mouthful.The air-introduced machine is suction type air-introduced machine.
As shown in Figure 1, the present invention relates to a kind of intelligent tail gas photooxidation cracking purifier, including with factory's organic waste tracheae Front end spray column 1 that road is connected, cracked by the photooxidation for being internally provided with lamp group module that air hose is connected with front end spray column 1 cabinet 3, The negative pressure induced wind machine 9 for being installed on photooxidation cracking cabinet air outlet, the dry method flue gas integrated treatment being connected with 9 air outlet of negative pressure induced wind machine Tank 10;The inlet of photooxidation cracking cabinet 3 is equipped with exhaust gas concentration detection sensor 2, is equipped in the slot of 3 inlet of photooxidation cracking cabinet Changeable type is dust-proof to filter wet web 4, and the detection of postposition exhaust gas concentration is equipped on the exhaust pipe of the dry method flue gas integrated treatment tank and is passed Sensor 11, the exhaust pipe are T-tube, and a branch is directly communicated with outside, the inlet tube of another branch and front end spray column 1 Road is connected;The three-way electromagnetic switch valve 12 controlled by single-chip computer control system is equipped at the exhaust pipe branch bifurcated mouth.Such as place Gas concentration after reason is not achieved the minimum exhaust gas concentration discharge standard of default, the microcontroller in the Intelligent control cabinet 8 Control system records this gas component simultaneously, and Intelligent control cabinet 9 controls three-way electromagnetic switch valve 14 that gas is discharged into air one The pipe switch closing of side, the tracheae that the three-way electromagnetic switch valve being connected with the air inlet duct side of front end spray column 1 is connect It is open-minded, the single-chip computer control system control high energy ultraviolet during vent gas treatment of same sample ingredient in Intelligent control cabinet 8 is carried out next time Line lamp group module and ozone supply module are handled according to higher than rank unlatching fluorescent tube where this exhaust gas concentration.

Claims (7)

1. a kind of tail gas photooxidation cracking purification method, it is characterised in that:Including,
1) factory's organic exhaust gas enters the front end spray column, and front end spray column is by spraying the dust particles in organic exhaust gas Object is fixed in spray liquid;
2) organic exhaust gas after rough dusting enters photooxidation cracking cabinet by air hose, and organic exhaust gas enters by photooxidation cracking cabinet Mouthful dust-proof filter wet web further dedusting filter it is wet, high energy ultraviolet lamp group module is by organic exhaust gas macromolecular chain rupture, ozone supply Module further aoxidizes the small molecule exhaust gas after chain rupture;
3) in the 2) step processing procedure, the exhaust gas concentration detection sensor mounted on photooxidation cracking cabinet inlet will detect in real time Signal is simultaneously fed back to single-chip computer control system by exhaust gas concentration, and single-chip computer control system is according to input-signal judging respective concentration model It encloses and enables the control program of autonomous optimization design fluorescent tube in high energy ultraviolet lamp group module, ozone supply module to be controlled to have rule The energy-efficient processing to organic exhaust gas is realized in the combination open and close of rule;
4) gas after processing enters dry method flue gas integrated treatment tank realization sulphur, nitrogen oxygen under the action of the air-introduced machine The fixation of compound;
5) such as treated, and the minimum exhaust gas concentration discharge standard of default, Intelligent control cabinet control three is not achieved in gas concentration The pipe switch that gas is discharged into air side by logical electromagnetic switch valve is closed, and is connected with the air inlet duct side of front end spray column The connection of three-way electromagnetic switch valve tracheae it is open-minded, be given to leading portion so as to which untreated gas up to standard be made to pass through pipeline and convey again Processing equipment is handled again, until the detection numerical value of postposition exhaust gas concentration detection sensor meets the concentration standard of default Value, the final ultra-clean discharge realized after VOCs treatment.
2. a kind of tail gas photooxidation cracking purification method according to claim 1, it is characterised in that:Described 3) described in step The fluorescent tube layout that high energy ultraviolet lamp group module and ozone supply module fluorescent tube are opened follows uniform spatial distribution principle.
3. a kind of tail gas photooxidation cracking purification method according to claim 2, it is characterised in that:The high energy ultraviolet lamp Group module includes 3 groups including 4 groups, ozone supply module, and every group of lamp group includes 4 fluorescent tubes, and control fluorescent tube open method is:
When exhaust gas concentration is 0-150mg/m3;In high energy ultraviolet lamp group module, every group is only opened 1 fluorescent tube, and all groups of unlatchings Fluorescent tube open lamp strip position differ, integral into " W " or " M " type arrange;In ozone supply module, first group is only opened With 1 fluorescent tube among third group, the lamp strip position of unlatching is staggered;
When exhaust gas concentration is 150-200mg/m3, in high energy ultraviolet lamp group module, 2 fluorescent tubes of every group of unlatching, integral into ">" and “<" staggered;In ozone supply module, open first group and second group in 2 fluorescent tubes, unlatching lamp strip position ">" or “<" type;
When exhaust gas concentration is 200-250mg/m3, in high energy ultraviolet lamp group module, first group and third group fluorescent tube are all turned on, Second group and the 4th group is opened 2 fluorescent tubes and fluorescent tube is staggered;In ozone supply module, every group is opened 2 fluorescent tubes, whole Body into ">" and "<" staggered;
When exhaust gas concentration is 250mg/m3More than, all fluorescent tubes of high energy ultraviolet lamp group module are opened;In ozone supply module, First group of fluorescent tube is all turned on, and second group and third group fluorescent tube open 2 fluorescent tubes, second and third group of fluorescent tube arrangement in ">" or “<" type.
4. a kind of tail gas photooxidation cracking purification method according to claim 1 or 2, it is characterised in that:The photooxidation cracking Cabinet inlet is equipped with the dust-proof filter wet web of changeable type.
5. a kind of tail gas photooxidation cracking purification method according to claim 1 or 2, it is characterised in that:The lamp group module Between be evenly distributed with TiO2Catalysis net, TiO2Catalysis net participates in catalysis, and organic exhaust gas is broken down into CO2、H2O, the oxidation of sulphur Object, nitrogen oxide.
6. a kind of tail gas photooxidation cracking purification method according to claim 1 or 2, it is characterised in that:The air-introduced machine is Suction type air-introduced machine.
7. tail gas photodestruciton purification method according to claim 2, it is characterised in that:In the Intelligent control cabinet Single-chip computer control system is able to record the function of exhaust gas component still not up to standard after tail gas clean-up, carry out next time equally into During the vent gas treatment divided, single-chip computer control system control high energy ultraviolet lamp group module and ozone supply module are according to useless higher than this Rank is opened fluorescent tube and is handled where gas concentration.
CN201711266598.9A 2017-12-05 2017-12-05 A kind of tail gas photooxidation cracking purification method Pending CN108211686A (en)

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* Cited by examiner, † Cited by third party
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CN109012108A (en) * 2018-09-27 2018-12-18 高根树 Waste gas processing method based on gas-gas oxidation reaction
CN109012113A (en) * 2018-09-19 2018-12-18 中节能(连云港)清洁技术发展有限公司 A kind of process flow of ion cleaning exhaust gas
CN109621660A (en) * 2018-11-30 2019-04-16 江苏旭龙环境科技有限公司 A kind of waste gas treatment process
CN110102162A (en) * 2019-06-14 2019-08-09 惠州市新绿源环保科技服务有限公司 A kind of UV photodissociation industrial waste gas treatment device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109012113A (en) * 2018-09-19 2018-12-18 中节能(连云港)清洁技术发展有限公司 A kind of process flow of ion cleaning exhaust gas
CN109012108A (en) * 2018-09-27 2018-12-18 高根树 Waste gas processing method based on gas-gas oxidation reaction
CN109621660A (en) * 2018-11-30 2019-04-16 江苏旭龙环境科技有限公司 A kind of waste gas treatment process
CN110102162A (en) * 2019-06-14 2019-08-09 惠州市新绿源环保科技服务有限公司 A kind of UV photodissociation industrial waste gas treatment device

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