CN108671690A - A kind of exhaust gas purifying method - Google Patents
A kind of exhaust gas purifying method Download PDFInfo
- Publication number
- CN108671690A CN108671690A CN201810544733.XA CN201810544733A CN108671690A CN 108671690 A CN108671690 A CN 108671690A CN 201810544733 A CN201810544733 A CN 201810544733A CN 108671690 A CN108671690 A CN 108671690A
- Authority
- CN
- China
- Prior art keywords
- exhaust gas
- activated carbon
- gas
- purifying method
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B01D53/005—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 heat treatment
-
- 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
-
- 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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
-
- 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
- B01D53/26—Drying gases or vapours
-
- 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
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to a kind of exhaust gas purifying methods, it is characterised in that：Desorption including exhaust gas pretreatment exhaust gas, acid gas wash absorption, organic principle activated carbon adsorption and activated carbon and catalysis four steps of burning.This method first heats exhaust gas before exhaust gas enters exhaust gas washing tower, may advantageously facilitate exhaust gas and absorbs reacting for treatment fluid, improves clean-up effect.Process require that exhaust gas before entering activated carbon adsorber, first passes through the processing of dry and temperature control；It is first passed through after into activated carbon adsorber except wet layer does dehumidification treatments, and the operating temperature for controlling activated carbon is stablized at 30 40 DEG C, make exhaust gas keep dry and operating ambient temperature control at 30 40 DEG C, to improve the effect of organic principle in activated carbon adsorption exhaust gas, improves the effect of waste gas purification.
Description
Technical field
The present invention relates to the net of exhaust-gas treatment field more particularly to exhaust gas a kind of while containing acidic materials and organic substance
Change method.
Background technology
The production and experiment of chemical industry and pharmaceuticals industry will produce large quantity of exhaust gas, and there are two main classes for these exhaust gas.One kind be with
Chlorine, hydrogen sulfide, nitrogen dioxide, hydrogen chloride, sulfur dioxide etc. are the acid waste gas of representative；It is another kind of be with methanol, ethyl alcohol,
Benzene,toluene,xylene, formaldehyde, the organic exhaust gas that organic naphthalene is representative.These gases often have corrosivity or irritation gas
Taste or carcinogenic property, so they, which are discharged into air, will cause environment prodigious influence.
There are many research of the organic exhaust gas of research removal at present, but can remove the net of organic exhaust gas and acid waste gas simultaneously
Change method is less.In addition waste gas purification effect also has the space promoted.Therefore providing a kind of can remove simultaneously acid waste gas and has
Machine exhaust gas, good purification exhaust gas purifying method be problem to be solved by this invention.
Invention content
The present invention overcomes the deficiencies in the prior art, provide a kind of can remove acid waste gas and organic exhaust gas, purification simultaneously
The good exhaust gas purifying method of effect.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of exhaust gas purifying method is provided, feature exists
In：A kind of exhaust gas purifying method, it is characterised in that：Include the following steps：
（1）Exhaust gas pre-processes
Exhaust gas passes through heating device, is heated；
（2）Acid gas wash absorbs
The heated pretreated exhaust gas enters exhaust gas washing tower under air-introduced machine effect, moves from bottom to top；It gives up simultaneously
Aspiration treatment fluid is transported to spray in spray system by circulating line by exhaust gas washing tower liquid storing part and comes out, and transports from top to bottom
It is dynamic；Exhaust gas and waste gas absorption treatment fluid are in the position counter current contacting of packing layer, waste gas absorption treatment fluid and acid ingredient in exhaust gas
React, liquid falls back to liquid storing part later, stirs evenly, recycle or further recovery processing；It removes
The gas of acid ingredient is discharged at the top of the exhaust gas washing tower；
（3）Organic principle activated carbon adsorption
The exhaust gas for removing acid ingredient passes sequentially through gas drier, gas temperature control apparatus, controls waste gas humidity
Less than 5%, exhaust gas temperature is at 30-40 DEG C；Absorption intake valve, adsorption outlet valve in exhaust treatment system is controlled in opened condition, to control
System desorption intake valve, desorption air outlet valve are in closed state, keep exhaust gas washing tower, activated carbon adsorber, air-introduced machine, gas discharge
Portion constitutes access；The exhaust gas enters activated carbon adsorber and is purified on activated carbon adsorption layer later, the work of activated carbon
Temperature is maintained at 30-40 DEG C.Purified gas is discharged by gas discharge section；
（4）The desorption of activated carbon and catalysis burning
After activated carbon adsorption layer adsorption saturation, absorption intake valve in exhaust treatment system, adsorption outlet valve are controlled in closing shape
State, desorption intake valve, desorption air outlet valve in opened condition, keep activated carbon adsorber, catalytic combustion system, desorption wind turbine to constitute
Close access；The electric heater unit for starting catalytic combustion system, is heated to 100-150 DEG C, hot-air is redirected back into institute by air
Heating of Activated charcoal adsorption layer, organic pollution in activated carbon adsorber is stated to detach from activated carbon adsorption layer and form high concentration
Organic exhaust gas；The high-concentration organic waste gas is in the case where being desorbed fan action, into catalytic combustion system；Through catalytic combustion system
Electric heater unit be warmed to 250-320 DEG C after by catalyst layer, the organic pollution catalysis burning in high-concentration organic waste gas；
High temperature hot gas that catalysis burning generates or by pipeline, after mending low temperature valve and being cooled to 100-150 DEG C, into activated carbon adsorption
Tower recycles；Or it is discharged by gas discharge section by pipeline.
As a preferred embodiment, the step（1）The temperature of middle control exhaust gas is at 50-80 DEG C.
As a preferred embodiment, the step（3）Middle exhaust gas first passes through before contacting activated carbon adsorption layer except wet layer
It dehumidifies.
As a kind of more preferable scheme, the step（3）Flow control exists when middle exhaust gas enters activated carbon adsorber
25000-32000m³/h
As a preferred embodiment, the step（4）In, when temperature is more than 350 DEG C in catalytic combustion system, nitrogen is introduced to urging
Change in burner.
As a kind of more preferable scheme, the step（4）Flow control when middle/high concentration organic waste gas contacts catalyst layer
In 2500-3000m3/h.
As a preferred embodiment, the step（2）The pH of middle control waste gas absorption treatment fluid is not less than 9.5.
As a kind of more preferable scheme, the step（2）Middle exhaust gas enters the flow control of scrubbing tower in 25000-
32000m³/h。
As a kind of more preferable scheme, the step（2）The flow control that middle exhaust-gas treatment absorbing liquid enters scrubbing tower exists
200-1000 m³/h。
As a kind of more preferable scheme, the step（2）Middle control mixing speed is 400-800rpm.
This method first heats exhaust gas before exhaust gas enters exhaust gas washing tower.The purpose of the step is to lead to
It crosses heating to promote the molecular motion of exhaust gas, increase the reaction activity of emission molecule, be washed into exhaust gas to promote exhaust gas
Wash after tower with absorb reacting for treatment fluid, keep the absorption of exhaust gas more thorough, improve clean-up effect.Heating increases useless simultaneously
The ascending motion of gas air-flow saves energy consumption to mitigate the work load of air-introduced machine.The temperature of exhaust gas is controlled at 50-80 DEG C,
Temperature is too low, and the reaction activity of emission molecule can not obviously increase, to remarkably promote exhaust gas into exhaust gas washing tower
Afterwards with absorb treatment fluid and react；Exhaust gas temperature is excessively high, then can excessively increase energy consumption, lose more than gain.
Neutralization reaction occurs in scrubbing tower for this method exhaust gas and exhaust gas treating agent, compared to other acid absorption process,
This method utilizes scrubbing tower, makes exhaust gas that counter current contacting mass transfer, exhaust gas and the contact of waste gas absorption treatment fluid occur with exhaust gas treating agent
More fully, it improves absorption efficiency higher, keep assimilation effect more prominent.
Activated carbon can adsorb the organic principle in exhaust gas, and adsorption efficiency has relationship with temperature and humidity.Study table
It is bright：Temperature increases the adsorption efficiency for helping to improve activated carbon, but when the temperature is excessively high, emission molecule movement excessively acutely makes
Activated carbon is difficult to effectively adsorb exhaust gas, to reduce the effect of absorption.Temperature control is at 30-40 DEG C, the suction of activated carbon synthesis
Attached best results.In addition steam can fight for the absorption position of activated carbon with emission molecule, so wet air environment or gas
Body is unfavorable for absorption of the activated carbon to debirs in exhaust gas.Therefore in order to improve absorption of the activated carbon to organic principle in exhaust gas
Effect, it should keep the drying of gas and environment and suitable temperature.In this method exhaust gas enter activated carbon adsorber before,
The processing of dry and temperature control is first passed through, exhaust gas is made to keep drying（Humidity is less than 5%）And temperature is controlled at 30-40 DEG C, to improve
The adsorption effect of activated carbon.And exhaust gas first passes through after entering activated carbon adsorber except wet layer does dehumidification treatments, further to useless
Gas is dried.The operating temperature for controlling activated carbon is stablized at 30-40 DEG C.These steps can improve activated carbon adsorption exhaust gas
The effect of middle organic principle.
Flow velocity is controlled in 25000-32000m3/h when exhaust gas enters exhaust gas washing tower and activated carbon adsorber, both may be used
To ensure the effect of waste gas absorption and absorption, and it can ensure the efficiency of waste gas purification.Exhaust-gas treatment absorbing liquid enters scrubbing tower
Flow control in 200-1000 m3/h, to coordinate exhaust gas to enter the flow velocity of exhaust gas washing tower, both ensured exhaust gas acidic materials
It fully absorbs and also avoids wasting.The pH value control of exhaust-gas treatment absorbing liquid is not less than 9.5, ensures the matter for absorbing exhaust gas acidic materials
Amount.Catalysis burning is adequately carried out in catalyst layer for guarantee high-concentration organic waste gas, relatively low flow velocity should be controlled, with
2500-3000m3/h are advisable.
In addition treatment method is carried out in provision for sealing, and exhaust gas is discharged from into system in closed environment to the end
Lower progress, it is therefore prevented that pollution of the leakage of exhaust gas to environment.
The advantageous effects of the present invention essentially consist in：A kind of acid waste gas and organic exhaust gas, net of capable of removing simultaneously is provided
Change the good exhaust gas purifying method of effect.
（1）Compared to conventional method, this method first heats exhaust gas before exhaust gas enters exhaust gas washing tower,
The reaction activity for being conducive to increase emission molecule makes the absorption of exhaust gas more to promote exhaust gas and absorb reacting for treatment fluid
Add thoroughly, improves clean-up effect.The ascending motion for increasing off-gas flows simultaneously, to mitigate the work load of air-introduced machine,
Save energy consumption.
（2）With exhaust gas treating agent neutralization reaction occurs in scrubbing tower for this method exhaust gas, compares and other acid absorption sides
Method, this method utilize scrubbing tower, and it is more abundant that scrubbing tower makes exhaust gas and waste gas absorption treatment fluid contact, and improves absorption efficiency more
Height keeps assimilation effect more prominent.
（3）Exhaust gas first passes through the processing of dry and temperature control before entering activated carbon adsorber in this method；It is inhaled into activated carbon
It is first passed through after attached tower except wet layer does dehumidification treatments, and the operating temperature for controlling activated carbon is stablized at 30-40 DEG C, exhaust gas is made to keep dry
The control of dry and operating ambient temperature, to improve the effect of organic principle in activated carbon adsorption exhaust gas, improves exhaust gas at 30-40 DEG C
The effect of purification.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the flow diagram of the preferred embodiment of the present invention.
Fig. 2 is the applicable exhaust gas washing tower structural schematic diagram of the preferred embodiment of the present invention.
Fig. 3 is the applicable activated carbon adsorber of the preferred embodiment of the present invention and desorption catalyzing fuel element structural schematic diagram.
In figure：1 be heating device, 11 be exhaust gas entrance, 12 be waste gas outlet, 13 be wind pressure transmitter, 2 be exhaust gas washing
Tower, 20 be chemicals dosing plant, 201 be dosing pump, 21 be exhaust gas washing tower air intake, 22 be the gas outlet of exhaust gas washing tower, 23 be
Packing layer, 231 be liquid uniform distributor, 24 be spray system, 241 be nozzle, 25 be demisting layer, 26 be liquid storing part, 261 be
Agitating device, 262 be fluid level indicator, 263 be fluid infusion hole, 264 be drainage hole, 265 be liquid overflow hole, 27 be circulating line, 271
It is pH indicators for subsidiary conduit, 272,273 be ball valve, 274 be pressure gauge, 275 be check-valves, 28 is circulating pump, 281 to follow
Ring pump frequency conversion device, 29 be grid layer, 3 be activated carbon adsorber, 31 to be the first activated carbon adsorption layer except wet layer, 32,33 be
Second activated carbon adsorption layer, 34 for the first activated carbon adsorption layer the first activated carbon thermostat, 35 be the second activated carbon adsorption layer
The second activated carbon thermostat, 311 be absorption intake valve, 312 be adsorption outlet valve, 321 be desorption intake valve, 322 be desorption
Air outlet valve, 331 for net gas air outlet valve, 341 be mend low temperature valve, 4 be air-introduced machine, 41 be air-introduced machine converter plant, 5 be gas discharge
Portion, 6 be catalytic combustion system, 61 be catalytic combustion system air intake, 62 be catalytic combustion system electric heater unit, 63 be catalysis
The catalyst layer of burner, 7 be gas drier, 8 be gas temperature control apparatus, 9 be desorption wind turbine, 901 be threeway
Pipe, 10 are nitrogen storage device, and 101 be nitrogen intake valve.
Specific implementation mode
Presently in connection with drawings and examples, the present invention is described in further detail, these attached drawings are simplified signal
Figure, the basic structure of the invention will be illustrated schematically only, therefore it only shows the composition relevant to the invention.
As shown in Figs. 1-3, a kind of exhaust gas purifying method, it is characterised in that：Including
（1）Exhaust gas pre-processes
Exhaust gas first passes around heating device 1, and gas is heated to 50-80 DEG C, has both been effectively increased the reaction activity of emission molecule, from
And remarkably promote exhaust gas after entering exhaust gas washing tower with absorb treatment fluid and react, and will not excessively increase energy consumption.Simultaneously
After heating, gas ascendant trend increases exhaust gas, to mitigate the work load of air-introduced machine 4, saves energy consumption.
（2）Acid gas wash absorbs
Exhaust gas after heat pre-treatment enters exhaust gas washing tower 2, and flow control is in 25000-32000m3/h, by air-introduced machine 4
Control, can not only ensure the effect of waste gas absorption and absorption, but also can ensure the efficiency of waste gas purification.Due to itself and air inducing
The effect of machine 4, exhaust gas move from bottom to top；Waste gas absorption treatment fluid is passed through by the liquid storing part 26 of 2 bottom of exhaust gas washing tower simultaneously
Circulating line 27 and circulating pump 28 are transported in spray system 24 spray and come out, and move from top to bottom, exhaust-gas treatment absorbing liquid into
Enter the flow control of scrubbing tower in 200-1000 m3/h, is controlled by circulating pump 28；Exhaust gas and waste gas absorption treatment fluid are in packing layer
23 position counter current contacting, waste gas absorption treatment fluid are that the solution of alkaline reagent can occur to neutralize instead with the acid ingredient in exhaust gas
It answers.The two neutralization is latter with liquid storing part 26 is fallen back to, and is further recycled.And the gas for removing acid ingredient passes through
Demisting layer 25 is discharged after removing steam from 2 top of exhaust gas washing tower.To ensure the quality absorbed, the pH value of exhaust-gas treatment absorbing liquid
Control is not less than 9.5.If pH value is less than 9.5, opens dosing pump 201 and the alkaline reagent of chemicals dosing plant 20 is supplemented into exhaust gas
It absorbs in treatment fluid.Agitating device 261 is arranged in liquid storing part 26 simultaneously, is stirred with 400-800rpm rotating speeds, to keep liquid storing part 26
Liquid is uniform, and not will produce violent splash.
（3）Organic principle activated carbon adsorption
The exhaust gas for removing acid ingredient passes sequentially through gas drier 7 and gas temperature control apparatus 8, and exhaust gas is made to enter work
Drying is kept when property charcoal adsorption tower 3（Humidity 5%）And temperature is controlled at 30 DEG C.The intake valve 311 of control absorption at this time absorbs
In opened condition, and intake valve 321 is desorbed in air valve 312, desorption air outlet valve 322 is in closed state.Exhaust gas washing tower 2 arrives activated carbon
Adsorption tower 3 constitutes access to air-introduced machine 4 to gas discharge section 5.Exhaust gas enters activated carbon adsorber 3 under the effect of air-introduced machine 4, gives up
Gas velocity is controlled in 25000-32000m3/h.After removing wet layer 31 and further dehumidifying, exhaust gas is in 32 He of activated carbon adsorption layer
It is purified on 33, the operating temperature of activated carbon adsorption layer 32 and 33 is controlled by activated carbon thermostat 34 and 35 in 30- at this time
40℃.Organic components in exhaust gas are attracted on activated carbon adsorption layer 32 and 33, and purified gas is discharged by gas
Portion 5 is discharged.
（4）The desorption of activated carbon and catalysis burning
After activated carbon adsorption layer 32 and 33 adsorption saturation, desorption and regeneration step is carried out.Intake valve 311 is adsorbed at this time, is absorbed
Air valve 312 is in closed state, and intake valve 321, desorption air outlet valve 322 is desorbed in opened condition.Activated carbon adsorber 3 arrives catalysis
Burner 6 arrives activated carbon adsorber 3 to desorption wind turbine 9 and constitutes access again.Start the electrical heating dress of catalytic combustion system 6 first
Set 62, air be heated to 100-150 DEG C, temperature can not be excessively high or too low, the too low effect that cannot play desorption, it is excessively high then
The energy can be excessively consumed, certain injury is also had to activated carbon.Heated air is redirected back into heating in activated carbon adsorber 3
Activated carbon.After activated carbon is heated to 130 DEG C, the organic pollution being adsorbed in activated carbon is detached out of activated carbon and shape
At high-concentration organic waste gas.The high-concentration organic waste gas of desorption out adds in the case where desorption wind turbine 9 is acted on by electric heater unit 62
To catalytic combustion system catalyst layer 63 is entered after 300 DEG C, the organic pollution catalysis in exhaust gas is burnt simultaneously to be converted into harmless temperature
Carbon dioxide and water.Catalyst combustion reaction process is relatively slow, therefore controls high-concentration organic waste gas warp by the way that wind turbine 9 is desorbed
The flow velocity for crossing catalyst layer is 2500-3000 m3/h.Catalysis burning generate high temperature hot gas can recycle, for heat from
The high-concentration organic waste gas of desorption out in activated carbon adsorber 3, mitigates the burden of electric heater unit 62, plays energy-efficient work
With.Temperature adjusting can also be desorbed to 130 DEG C or so as activated carbon adsorber 3 by mending the cooling of low temperature valve 341 by pipeline
Regenerated heat source.Net gas air outlet valve 331 can also be opened, is discharged by gas discharge section 5.When temperature is more than in electric heater unit
At 350 DEG C, opening nitrogen intake valve 101 in nitrogen storage device 10 by being introduced into nitrogen to system, expulsion partial oxidation, to prevent
Only temperature is excessively high and cause the burning or explosion of system.
The waste gas cleaning system for being suitble to this method is described below：
As shown in Figs. 1-3, waste gas cleaning system include heating device 1, exhaust gas washing tower 2, activated carbon adsorber 3, air-introduced machine 4 with
And gas discharge section 5.They are sequentially connected by pipeline.
Wherein heating device 1 is equipped with exhaust gas entrance 11 and waste gas outlet 12.Exhaust gas enters system by exhaust gas entrance 11；
Waste gas outlet 12 is arranged the air intake 21 in side wall by pipeline and exhaust gas washing tower 2 and is connected；The gas outlet of exhaust gas washing tower 2
22 are arranged in tower top, are connected with activated carbon adsorber 3 by pipeline；Between the exhaust gas washing tower 2 and activated carbon adsorber 3
Pipeline on be disposed with gas drier 7, gas temperature control apparatus 8, absorption intake valve 311；And activated carbon adsorption
Tower 3 is connected by pipeline with air-introduced machine 4, and the pipeline between activated carbon adsorber 3 and air-introduced machine 4 is provided with adsorption outlet valve
312；This system activated carbon adsorber 3 in the way of parallel connection there are two and by be arranged, and there are one inhale for each activated carbon adsorber 3
311, adsorption outlet valves 312 of attached intake valve are cooperating therewith.In addition, air-introduced machine 4 is connected with gas discharge section 5 by pipeline
It connects.
Each activated carbon adsorber 3 is also connected by pipeline with catalytic combustion system 6, desorption wind turbine 9 simultaneously, each living
Property charcoal adsorption tower 3 pass through pipeline with catalytic combustion system 6, desorption wind turbine 9 and form closed circuit structure.Activated carbon adsorber 3
Pipeline between catalytic combustion system 6 is provided with desorption air outlet valve 322, one end connection of the nearly activated carbon adsorber of the pipeline 3
On pipeline between absorption intake valve 311 and activated carbon adsorber 3.The pipeline between wind turbine 9 and activated carbon adsorber 3 is desorbed
Three-way pipe 901, desorption intake valve 321 are set gradually, one end of the nearly activated carbon adsorber of the pipeline 3 is connected to adsorption outlet valve
On pipeline between 312 and activated carbon adsorber 3.Low temperature valve is mended in pipeline setting between three-way pipe 901 and activated carbon adsorber 3
341.In addition three-way pipe 901 is also connected with net gas air outlet valve 331, gas discharge section 5 by pipeline successively.
System further includes nitrogen storage device 10, is connected with 6 air intake 61 of catalytic combustion system by pipeline, in nitrogen
Pipeline setting nitrogen intake valve 101 between gas storage device 10 and catalytic combustion system 6.
Inside exhaust gas washing tower 2, above air intake 21, it is disposed with grid layer 29, packing layer 23, spray from the bottom to top
Leaching system 24 and demisting layer 25.Liquid uniform distributor 231 is equipped with above packing layer 23.Spray system 24 is equipped with rotary
Nozzle 241.Inside exhaust gas washing tower 2, liquid storing part 26 is provided with below air intake 21.Liquid storing part 26 by circulating line 27 with
Spray system 24 is connected, and circulating pump 28 is provided on circulating line 27.Bifurcated goes out subsidiary conduit 271 on circulating line 27,
One head is connected with circulating line 27, and one is passed through inside exhaust gas washing tower 2.PH indicators are provided on subsidiary conduit 271
272, and front and back it is respectively provided with ball valve 273.In addition it is additionally provided with pressure gauge 274 on circulating line 27.Simultaneously before and after circulating pump 28
Pipeline on be also provided with ball valve 273.And check-valves 275 is set on the pipeline of 28 liquid flow outgoing direction of circulating pump.
Exhaust gas washing tower 2 is connected by pipeline with chemicals dosing plant 20 in the position of liquid storing part 26, between the two pipe
Dosing pump 201 is provided on road.Ball valve 273 is also provided on the pipeline before and after dosing pump 201.In addition it is arranged in liquid storing part 26
Have several agitating devices 261, fluid level indicator 262,2 tower wall of exhaust gas washing tower setting fluid infusion hole 263, drainage hole 264 with
And liquid overflow hole 265.
Activated carbon adsorber 3 is internally provided with except wet layer 31, the first activated carbon adsorption layer 32, the second activated carbon adsorption layer
33.The first activated carbon thermostat 34 and second is respectively set on first activated carbon adsorption layer 32 and the second activated carbon adsorption layer 33
Activated carbon thermostat 35.
Gas discharge section 5 can be that exhaust pipe can also be chimney or the device of this field routine.
It is provided with wind pressure transmitter 13 on exhaust gas entrance 11, is provided on air-introduced machine 4 converter plant 41, in circulating pump
Converter plant 281 is provided on 28.Converter plant 41 and 281 adjusts air-introduced machine 4 and follows according to the numerical value of wind pressure transmitter 13
The frequency of supply of ring pump 28.
Based on the above description of the preferred embodiments of the present invention, through the above description, related personnel completely can be with
Without departing from the scope of the technological thought of the present invention', various changes and amendments are carried out.The technical scope of this invention
It is not limited to the contents of the specification, it is necessary to determine the technical scope according to the scope of the claims.
Claims (10)
1. a kind of exhaust gas purifying method, it is characterised in that：Include the following steps：
（1）Exhaust gas pre-processes
Exhaust gas passes through heating device, is heated；
（2）Acid gas wash absorbs
The heated pretreated exhaust gas enters exhaust gas washing tower under air-introduced machine effect, moves from bottom to top；It gives up simultaneously
Aspiration treatment fluid is transported to spray in spray system by circulating line by exhaust gas washing tower liquid storing part and comes out, and transports from top to bottom
It is dynamic；Exhaust gas and waste gas absorption treatment fluid are in the position counter current contacting of packing layer, waste gas absorption treatment fluid and acid ingredient in exhaust gas
React, liquid falls back to liquid storing part later, stirs evenly, recycle or further recovery processing；It removes
The gas of acid ingredient is discharged at the top of the exhaust gas washing tower；
（3）Organic principle activated carbon adsorption
The exhaust gas for removing acid ingredient passes sequentially through gas drier, gas temperature control apparatus, controls waste gas humidity
Less than 5%, exhaust gas temperature is at 30-40 DEG C；Absorption intake valve, adsorption outlet valve in exhaust treatment system is controlled in opened condition, to control
System desorption intake valve, desorption air outlet valve are in closed state, keep exhaust gas washing tower, activated carbon adsorber, air-introduced machine, gas discharge
Portion constitutes access；The exhaust gas enters activated carbon adsorber and is purified on activated carbon adsorption layer later, the work of activated carbon
Temperature is maintained at 30-40 DEG C.
2. purified gas is discharged by gas discharge section；
（4）The desorption of activated carbon and catalysis burning
After activated carbon adsorption layer adsorption saturation, absorption intake valve in exhaust treatment system, adsorption outlet valve are controlled in closing shape
State, desorption intake valve, desorption air outlet valve in opened condition, keep activated carbon adsorber, catalytic combustion system, desorption wind turbine to constitute
Close access；The electric heater unit for starting catalytic combustion system, is heated to 100-150 DEG C, hot-air is redirected back into institute by air
Heating of Activated charcoal adsorption layer, organic pollution in activated carbon adsorber is stated to detach from activated carbon adsorption layer and form high concentration
Organic exhaust gas；The high-concentration organic waste gas is in the case where being desorbed fan action, into catalytic combustion system；Through catalytic combustion system
Electric heater unit be warmed to 250-320 DEG C after by catalyst layer, the organic pollution catalysis burning in high-concentration organic waste gas；
High temperature hot gas that catalysis burning generates or by pipeline, after mending low temperature valve and being cooled to 100-150 DEG C, into activated carbon adsorption
Tower recycles；Or it is discharged by gas discharge section by pipeline.
3. exhaust gas purifying method according to claim 1, it is characterised in that：The step（1）The temperature of middle control exhaust gas
At 50-80 DEG C.
4. exhaust gas purifying method according to claim 1 or 2, it is characterised in that：The step（3）Middle exhaust gas is contacting
It is first passed through before activated carbon adsorption layer except wet layer dehumidifies.
5. exhaust gas purifying method according to claim 3, it is characterised in that：The step（3）Middle exhaust gas enters activated carbon
Flow control is in 25000-32000m3/h when adsorption tower
Exhaust gas purifying method according to claim 1 or 2, it is characterised in that：The step（4）In, catalytic combustion system
When interior temperature is more than 350 DEG C, it is introduced into nitrogen to catalytic combustion system.
6. exhaust gas purifying method according to claim 5, it is characterised in that：The step（4）Middle/high concentration organic waste gas
Flow control is in 2500-3000m3/h when contacting catalyst layer.
7. exhaust gas purifying method according to claim 1 or 2, it is characterised in that：The step（2）Middle control waste gas absorption
The pH for the treatment of fluid is not less than 9.5.
8. exhaust gas purifying method according to claim 7, it is characterised in that：The step（2）Middle exhaust gas enters scrubbing tower
Flow control in 25000-32000m3/h.
9. exhaust gas purifying method according to claim 8, it is characterised in that：The step（2）Middle exhaust-gas treatment absorbing liquid
Into scrubbing tower flow control in 200-1000 m3/h.
10. exhaust gas purifying method according to claim 9, it is characterised in that：The step（2）Middle control mixing speed is
400-800rpm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810544733.XA CN108671690A (en) | 2018-05-31 | 2018-05-31 | A kind of exhaust gas purifying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810544733.XA CN108671690A (en) | 2018-05-31 | 2018-05-31 | A kind of exhaust gas purifying method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108671690A true CN108671690A (en) | 2018-10-19 |
Family
ID=63809222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810544733.XA Pending CN108671690A (en) | 2018-05-31 | 2018-05-31 | A kind of exhaust gas purifying method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108671690A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109499260A (en) * | 2018-11-22 | 2019-03-22 | 常州回天新材料有限公司 | Exhaust treatment system in solar battery back film production |
| CN110038389A (en) * | 2019-03-22 | 2019-07-23 | 驿涛项目管理有限公司 | A kind of processing equipment and processing method of harmful exhaust |
| CN110394025A (en) * | 2019-08-26 | 2019-11-01 | 河北恒嘉元环保科技有限公司 | Organic waste gas treatment device and its application method |
| CN111013329A (en) * | 2019-03-11 | 2020-04-17 | 北京诺维新材科技有限公司 | Waste gas treatment method and system |
| CN112546841A (en) * | 2020-12-15 | 2021-03-26 | 格林美（江苏）钴业股份有限公司 | Cobalt extraction acidic mixed organic waste gas treatment method and equipment |
| CN112843992A (en) * | 2020-12-25 | 2021-05-28 | 深圳德蓝生态环境有限公司 | VOCs waste gas treatment system and treatment method |
| CN113384994A (en) * | 2021-07-15 | 2021-09-14 | 湖南湘楚先路环保科技有限责任公司 | Device for removing formaldehyde in air by sepiolite |
| CN113786708A (en) * | 2021-08-31 | 2021-12-14 | 深圳市金华泰实验室科技发展有限公司 | Waste gas treatment device and process |
| CN115138182A (en) * | 2022-07-12 | 2022-10-04 | 宜兴市耀华玻璃钢有限公司 | Horizontal scrubbing tower for treating waste gas of glass fiber reinforced plastics |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1930065A2 (en) * | 2006-12-08 | 2008-06-11 | Vocci Oy | Treating assembly for VOC gases |
| CN103252157A (en) * | 2013-05-28 | 2013-08-21 | 昆山工统环保机械有限公司 | Vertical type acid-base waste gas washing tower |
| RU2016127215A (en) * | 2016-07-06 | 2016-11-10 | Баир Сыдыпович Бальжинимаев | METHOD AND INSTALLATION FOR CLEANING EXHAUST GASES |
| CN106943839A (en) * | 2017-03-16 | 2017-07-14 | 东华大学 | Alternative living things catalysis burning VOC waste gas purification apparatuses and application method |
| CN107051110A (en) * | 2017-06-05 | 2017-08-18 | 深圳市睿维盛环保科技有限公司 | Lacquer spraying waste gas processing equipment and its handling process |
| CN107715658A (en) * | 2017-11-16 | 2018-02-23 | 苏州爱源环境科技有限公司 | A kind of exhaust treatment system |
| CN107998763A (en) * | 2017-12-30 | 2018-05-08 | 江苏永益环保科技有限公司 | Paint spray booth's organic waste gas treatment system |
| CN107998836A (en) * | 2017-12-20 | 2018-05-08 | 苏州爱源环境科技有限公司 | A kind of laboratory exhaust gas processing system |
-
2018
- 2018-05-31 CN CN201810544733.XA patent/CN108671690A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1930065A2 (en) * | 2006-12-08 | 2008-06-11 | Vocci Oy | Treating assembly for VOC gases |
| CN103252157A (en) * | 2013-05-28 | 2013-08-21 | 昆山工统环保机械有限公司 | Vertical type acid-base waste gas washing tower |
| RU2016127215A (en) * | 2016-07-06 | 2016-11-10 | Баир Сыдыпович Бальжинимаев | METHOD AND INSTALLATION FOR CLEANING EXHAUST GASES |
| CN106943839A (en) * | 2017-03-16 | 2017-07-14 | 东华大学 | Alternative living things catalysis burning VOC waste gas purification apparatuses and application method |
| CN107051110A (en) * | 2017-06-05 | 2017-08-18 | 深圳市睿维盛环保科技有限公司 | Lacquer spraying waste gas processing equipment and its handling process |
| CN107715658A (en) * | 2017-11-16 | 2018-02-23 | 苏州爱源环境科技有限公司 | A kind of exhaust treatment system |
| CN107998836A (en) * | 2017-12-20 | 2018-05-08 | 苏州爱源环境科技有限公司 | A kind of laboratory exhaust gas processing system |
| CN107998763A (en) * | 2017-12-30 | 2018-05-08 | 江苏永益环保科技有限公司 | Paint spray booth's organic waste gas treatment system |
Non-Patent Citations (1)
| Title |
|---|
| 赵玉明等: "《环境工程工艺设计教程》", 31 December 2013, 中国环境科学出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109499260A (en) * | 2018-11-22 | 2019-03-22 | 常州回天新材料有限公司 | Exhaust treatment system in solar battery back film production |
| CN111013329A (en) * | 2019-03-11 | 2020-04-17 | 北京诺维新材科技有限公司 | Waste gas treatment method and system |
| CN110038389A (en) * | 2019-03-22 | 2019-07-23 | 驿涛项目管理有限公司 | A kind of processing equipment and processing method of harmful exhaust |
| CN110394025A (en) * | 2019-08-26 | 2019-11-01 | 河北恒嘉元环保科技有限公司 | Organic waste gas treatment device and its application method |
| CN112546841A (en) * | 2020-12-15 | 2021-03-26 | 格林美（江苏）钴业股份有限公司 | Cobalt extraction acidic mixed organic waste gas treatment method and equipment |
| CN112843992A (en) * | 2020-12-25 | 2021-05-28 | 深圳德蓝生态环境有限公司 | VOCs waste gas treatment system and treatment method |
| CN113384994A (en) * | 2021-07-15 | 2021-09-14 | 湖南湘楚先路环保科技有限责任公司 | Device for removing formaldehyde in air by sepiolite |
| CN113786708A (en) * | 2021-08-31 | 2021-12-14 | 深圳市金华泰实验室科技发展有限公司 | Waste gas treatment device and process |
| CN115138182A (en) * | 2022-07-12 | 2022-10-04 | 宜兴市耀华玻璃钢有限公司 | Horizontal scrubbing tower for treating waste gas of glass fiber reinforced plastics |
| CN115138182B (en) * | 2022-07-12 | 2023-09-08 | 宜兴市耀华玻璃钢有限公司 | Horizontal washing tower for glass fiber reinforced plastic waste gas treatment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108671690A (en) | A kind of exhaust gas purifying method | |
| CN101601964B (en) | Ammonia flue gas desulfurization device | |
| CN103301732B (en) | Device and process for recycling and treating hydrogen sulfide-containing chemical acid waste gas | |
| CN108465345A (en) | A kind of waste gas cleaning system | |
| CN205019964U (en) | SOx/NOx control device system is united to flue gas low temperature | |
| CN105327612A (en) | Flue gas low-temperature combined desulfurization and denitration technology method | |
| CN207025012U (en) | Industrial VOC Multi-grade exhaust gas concentration device | |
| CN104437051B (en) | A kind of wet desulphurization denitrating system and method | |
| CN212548975U (en) | Flue gas desulfurization denitration washing system | |
| CN104959034A (en) | Flue gas desulfurization method, flue gas desulfurization device as well as integrated flue gas desulfurization and denitration system and method | |
| CN106422695A (en) | Desulfurization and denitration system for coke oven flue gas | |
| CN102179130B (en) | Circulating flue gas desulfurization device with fixed bed | |
| CN209405955U (en) | Garbage burning boiler flue gas minimum discharge system | |
| CN203342639U (en) | Recovery treatment device for chemical acid waste gas containing hydrogen sulfide | |
| US4122150A (en) | Process for eliminating diluted sulfur oxides in combustion exhaust gases | |
| CN107930388A (en) | A kind of coke oven flue gas sulfur removal technology and coke oven flue gas desulphurization system | |
| CN107930387A (en) | A kind of coke oven flue gas integration desulfurization denitration system | |
| CN108654363A (en) | Couple waste heat of coke-oven flue gas and amounts of sulphur contaminants acid-making process | |
| CN112957878A (en) | Polyester waste gas treatment device | |
| CN107998844A (en) | High humility oxysulfide method for treating tail gas and device | |
| CN110180355A (en) | A kind of wet-dry change combined desulfurization and denitration running gear and method | |
| CN108939912B (en) | Combined desulfurization and denitrification arrangement system based on rotation | |
| CN204438823U (en) | A kind of flue gases of cock oven denitration desulfurization UTILIZATION OF VESIDUAL HEAT IN integrated apparatus | |
| CN208599435U (en) | A kind of waste gas cleaning system | |
| CN207024947U (en) | Industrial VOC waste gas concentrates heat-accumulation combustion processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 215000 no.1688 Ruyuan Road, Yuanhe street, Xiangcheng District, Suzhou City, Jiangsu Province Applicant after: SUZHOU AIYUAN ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Address before: 215000 first floor, building 6, 88 Zhen Bei Road, Suzhou high tech Zone, Suzhou, Jiangsu. Applicant before: SUZHOU AIYUAN ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181019 |
|
| RJ01 | Rejection of invention patent application after publication |