CN107899401A - A kind of acrylic factory waste gas treatment process - Google Patents
A kind of acrylic factory waste gas treatment process Download PDFInfo
- Publication number
- CN107899401A CN107899401A CN201711203826.8A CN201711203826A CN107899401A CN 107899401 A CN107899401 A CN 107899401A CN 201711203826 A CN201711203826 A CN 201711203826A CN 107899401 A CN107899401 A CN 107899401A
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- China
- Prior art keywords
- exhaust gas
- adsorption
- waste gas
- acrylic
- treatment process
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- 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.)
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/16—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by the winding course of the gas stream, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
-
- 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
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/70—Blending
- F23G2201/702—Blending with other waste
Abstract
The invention discloses a kind of acrylic factory waste gas treatment process, belong to exhaust-gas treatment field.Comprise the following steps：Waste gas dedusting；Cooling；Lye elutes, demisting；Activated carbon adsorption；Burning is handled；Air is discharged into after calcium hydroxide filters；The carbon fiber adsorption and catalytic combustion unit thermalization of adsorption saturation is handled, the organic exhaust gas for making to be adsorbed is desorbed, while regenerates absorbing unit；Exhaust gas out will be desorbed to separate and recover.The present invention improves waste gas purification dynamics, while to being recycled using exhaust gas, energy conservation and environmental protection.
Description
Technical field
The present invention relates to exhaust-gas treatment field, and in particular to a kind of waste gas treatment process of acrylic factory.
Background technology
Organic exhaust gas complicated component caused by waste and old organic glass regeneration industry and concentration is relatively low, produces in production
Technology waste gas do not carry out end-o f-pipe -control, organic exhaust gas is discharged into air wantonly, is got off year in year out, ambient air quality accelerate
Deteriorate.The major pollutants of waste and old organic glass reclaiming industry are condensation tail gas, vacuum pump waste gas and cracking and rectifying
Residue.Its main component is the organic matters such as methyl methacrylate, methyl acrylate, methacrylic acid, methanol.
At present, condensation method, absorption method, Production by Catalytic Combustion Process, absorption+Production by Catalytic Combustion Process, photocatalysis can be used by handling organic compounds
The techniques such as method, membrane technology method and bioanalysis.And for methyl methacrylate, acrylic acid first in organic glass industry technology waste gas
The extensive method of comparison applied in the actual harnessing project of the volatile organic matters such as ester, methanol is then that skill is administered in condensation+burning
Art.But this method uses the enterprise for filling mould by hand for waste and old organic glass regeneration industry especially for those
For, the halfway situation of exhaust-gas treatment inevitably still occurs, even causes secondary pollution, causes plant area's foul smell
Do not dissipate, do not reach national requirements for environmental protection.And the energy consumption of this technology is more, and it is cost-effective to be unfavorable for enterprise.Simultaneously as exhaust gas
The middle component there are many recoverables, directly processing are unfavorable for recycling, so as to cause unnecessary waste.
The content of the invention
The invention mainly solves the technical problem of providing a kind of waste gas treatment process, can be produced specifically for acrylic factory
Raw various exhaust gas are effectively purified, and reach discharging standards, and the active ingredient in exhaust gas is recycled, and save resource,
Avoid wasting.
To achieve these goals, the present invention adopts the technical scheme that：
A kind of acrylic factory waste gas treatment process, it is characterised in that comprise the following steps：
Step a：Exhaust gas enters deduster by discharge duct, by cyclonic separation, removes the dust in removing exhaust gas；
Step b：Cooled down by the exhaust gas of dust removal process by cooling device；
Step c：Exhaust gas after cooling enters spray column from spray column bottom air inlet, by packing layer, elutes, washes off through lye
Acid and water soluble ingredient in exhaust gas, moisture is removed by demisting layer, is discharged from spray column top；
Step d：Dewatered exhaust gas is pressed into carbon fiber adsorption and catalytic combustion unit by wind turbine and carries out adsorption treatment；
Step e：Exhaust gas after adsorption treatment is mixed into discharge duct with making sheet house exhaust, abundant into combustion chamber together
Burning；
Step f：Combustion tail gas is passed through after niter ashpit filters out the components such as sulfur dioxide and dust, is discharged into air；
Step g：The carbon fiber adsorption and catalytic combustion unit thermalization of adsorption saturation is handled, the organic exhaust gas for making to be adsorbed is desorbed, together
When regenerate absorbing unit；
Step h：Exhaust gas out will be desorbed to separate and recover.
Further, the step b includes carrying out the exhaust gas Jing Guo dust removal process time condensation to cooling temperature control
At 3 ~ 5 DEG C.
Further, in the step c, the lye is 30% sodium hydroxide solution.
Further, in the step d, activated carbon adsorption unit is two adsorption towers being connected in parallel, an adsorption tower
When being adsorbed for exhaust gas, another adsorption tower does desorption processing, the two is used alternatingly.
Further, in the step e, exhaust gas is needed by the circulating water pool for anti-backfire and fire-retardant before entering combustion chamber
Device.
Further, in the step g, the desorption mode of use is hot steam desorption.
Further, in the step h, the separation and recovery mode is that will be recycled group by fractionation after waste gas condensation
Point.
The beneficial effects of the invention are as follows：（1）The dust in removing exhaust gas is removed by cyclonic separation, with ensure these dust not into
Enter spray column, reduce the pollution to spray column, influence the efficiency and service life of spray column；（2）By cooling treatment, reduce useless
Temperature degree, the charcoal adsorption process degree of absorption higher after being allowed to；（3）Handled by alkali cleaning, further separate exhaust gas constituents,
Make the organic principle of adsorption treatment more single, reduce the pressure of absorption and subsequent recovery；（4）Adsorption tower uses the side of double tower parallel connection
Formula, improves adsorption efficiency, saves the time；（5）With the processing of making sheet house exhaust in the lump burning after absorption, further purify
Exhaust gas, reduces discharge；（6）By Adsorption Concentration exhaust gas, desorption and regeneration recycles, and cost is saved for enterprise.
Embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below.
A kind of acrylic factory waste gas treatment process, comprises the following steps：
Step a：Exhaust gas enters deduster by discharge duct, by cyclonic separation, removes the dust in removing exhaust gas；
Step b：Cooled down by the exhaust gas of dust removal process by cooling device；
Step c：Exhaust gas after cooling enters spray column from spray column bottom air inlet, by packing layer, elutes, washes off through lye
Acid and water soluble ingredient in exhaust gas, moisture is removed by demisting layer, is discharged from spray column top；
Step d：Dewatered exhaust gas is pressed into carbon fiber adsorption and catalytic combustion unit by wind turbine and carries out adsorption treatment；
Step e：Exhaust gas after adsorption treatment is mixed into discharge duct with making sheet house exhaust, abundant into combustion chamber together
Burning；
Step f：Combustion tail gas is passed through after niter ashpit filters out the components such as sulfur dioxide and dust, is discharged into air；
Step g：The carbon fiber adsorption and catalytic combustion unit thermalization of adsorption saturation is handled, the organic exhaust gas for making to be adsorbed is desorbed, together
When regenerate absorbing unit；
Step h：Exhaust gas out will be desorbed to separate and recover.
Exhaust gas is absorbed through vacuum pump enters deduster by ventilation shaft, by cyclonic separation, removes the dust in removing exhaust gas,
Subsequently into cooling device, cooling device includes two condensers of series connection, and exhaust gas enters condenser, to temperature drop to 3 DEG C, 4
DEG C or 5 DEG C it is any.Exhaust gas by cooling processing enters spray column from the bottom air inlet of spray column, is filled out by ceramics
The bed of material, carries out gas-liquid two-phase with the 30% sodium hydroxide absorbing liquid sprayed from spray column top showerhead in packing layer and fully connects
Touch and absorb neutralization reaction, remove the acid ingredient in removing exhaust gas or component soluble easily in water, then by the demisting at the top of spray column
Activated carbon fibre absorptive unit is pressed into by wind turbine after plate dehydrating demisting.Sodium hydroxide absorbing liquid bottom of towe after water pump is pressurized in tower
Top spray drench and under, be finally back to bottom of towe recycling.Absorbing liquid water level line observation tube is equipped with outside spray column, can be regular herein
PH is measured by sampling, adjusts absorbing liquid concentration.Activated carbon fibre absorptive unit is made of two charcoal traps in parallel.Exhaust gas
From top to bottom enter adsorption tower, organic matter is trapped by activated carbon, adsorbed and concentrates, and the air of purification is from bottom of towe lower part through main air blower
It is drained into the exhaust piping in making sheet workshop.It is mostly disordered exhaust gas that making sheet workshop, which produces exhaust gas, and utilization benefit is not high.These are useless
Gas enters combustion chamber by pipeline, after fully burning, resolves into the harmless components such as carbon dioxide, water.To avoid coal from firing
Burn the pollutants such as the dust produced, sulfur dioxide and enter air, final burning gases need to pass through niter ashpit and filter.
In the present embodiment, discard before entering combustion chamber, also need by circulating water pool and flame-retardant device, to prevent producing tempering, reduce
It is dangerous.
When activated carbon adsorption organic matter is close to saturation state, stop suction organic exhaust gas.Switch adsorption tower, exhaust gas enters
Another adsorption tower is adsorbed.And the adsorption tower of saturation then carries out desorption and regeneration：Hot steam is sent into upwards by active-carbon bed
Stripping is carried out, organic matter is evicted from from activated carbon.The mixture of steam and organic solvent is introduced into condenser, makes its condensation,
Condensate liquid enters tower rectifying column through drain valve, carries out continuous rectification, separation and recovery.In active carbon layer after being desorbed with steam,
80 ~ 90% steam condensate is about left, hot-air is passed through and carbon-coating is dried.Steam valve is then shut off, then is passed through room temperature sky
Gas, is cooled to 25 DEG C, activated carbon recovers as before, in case recycled.In the present embodiment, feed intake daily 20 tons, to exhaust gas
The degree of purifications such as middle methanol, dust reach 99%, and recoverable amount is up to 0.5 ton from exhaust gas, after measured, plant area's foul smell discharge
It is worth for 6, is much smaller than《Emission standard for odor pollutants》（GB14554-93）Factory's circle standard value 20 of defined.
Certainly, described above is only the embodiment of the present invention, and not limitation of the present invention, the present invention are also not limited to
State citing, change that those skilled in the art are made in the essential scope of the present invention, remodeling, add or replace
Change, fall within protection scope of the present invention.
Claims (7)
1. a kind of acrylic factory waste gas treatment process, it is characterised in that comprise the following steps：
Step a：Exhaust gas enters deduster by discharge duct, by cyclonic separation, removes the dust in removing exhaust gas；
Step b：Cooled down by the exhaust gas of dust removal process by cooling device；
Step c：Exhaust gas after cooling enters spray column from spray column bottom air inlet, by packing layer, elutes, washes off through lye
Acid and water soluble ingredient in exhaust gas, moisture is removed by demisting layer, is discharged from spray column top；
Step d：Dewatered exhaust gas is pressed into carbon fiber adsorption and catalytic combustion unit by wind turbine and carries out adsorption treatment；
Step e：Exhaust gas after adsorption treatment is mixed into discharge duct with making sheet house exhaust, abundant into combustion chamber together
Burning；
Step f：Combustion tail gas is passed through after niter ashpit filters out the components such as sulfur dioxide and dust, is discharged into air；
Step g：The carbon fiber adsorption and catalytic combustion unit thermalization of adsorption saturation is handled, the organic exhaust gas for making to be adsorbed is desorbed, together
When regenerate absorbing unit；
Step h：Exhaust gas out will be desorbed to separate and recover.
2. acrylic factory according to claim 1 waste gas treatment process, it is characterised in that the step b is included to passing through
The exhaust gas of dust removal process carries out time condensation to cooling temperature and controls at 3 ~ 5 DEG C.
3. acrylic factory according to claim 1 waste gas treatment process, it is characterised in that in the step c, the lye
For 30% sodium hydroxide solution.
4. acrylic factory according to claim 1 waste gas treatment process, it is characterised in that in the step d, activated carbon is inhaled
Coupon member is two adsorption towers being connected in parallel, and when an adsorption tower is used for exhaust gas absorption, another adsorption tower does desorption processing,
The two is used alternatingly.
5. acrylic factory according to claim 1 waste gas treatment process, it is characterised in that in the step e, exhaust gas enters
Needed before combustion chamber by the circulating water pool and flame-retardant device for anti-backfire.
6. acrylic factory according to claim 1 waste gas treatment process, it is characterised in that in the step g, use takes off
Subsidiary formula formula is hot steam desorption.
7. acrylic factory according to claim 1 waste gas treatment process, it is characterised in that in the step h, the separation
Way of recycling is that will be recycled component by fractionation after waste gas condensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203826.8A CN107899401A (en) | 2017-11-27 | 2017-11-27 | A kind of acrylic factory waste gas treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203826.8A CN107899401A (en) | 2017-11-27 | 2017-11-27 | A kind of acrylic factory waste gas treatment process |
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| CN107899401A true CN107899401A (en) | 2018-04-13 |
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| CN201711203826.8A Pending CN107899401A (en) | 2017-11-27 | 2017-11-27 | A kind of acrylic factory waste gas treatment process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109366784A (en) * | 2018-09-30 | 2019-02-22 | 淮阴工学院 | A kind of airtight mill system of recycling-guard |
| CN109621676A (en) * | 2018-12-27 | 2019-04-16 | 麻城市中优顺建材科技有限公司 | A kind of exhaust treatment system that can recycle methyl methacrylate |
| CN110227324A (en) * | 2019-07-12 | 2019-09-13 | 生态环境部南京环境科学研究所 | The mobile modularized processing unit of organic exhaust gas in site remediation |
| CN110585844A (en) * | 2019-10-12 | 2019-12-20 | 杭州临安清云环保设备有限公司 | Plastic granulation waste gas treatment system and waste gas treatment process |
| CN112439300A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Tail gas treatment system and tail gas treatment method for preparing acrylic acid |
| CN113813940A (en) * | 2021-09-29 | 2021-12-21 | 江苏科仕达实验室环保科技有限公司 | Saturated activated carbon activation regeneration treatment process and control method |
| CN116196752A (en) * | 2023-02-22 | 2023-06-02 | 吴桥县六合德利化工有限责任公司 | Tail gas treatment process for producing OB acid by using thionyl chloride as raw material |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109366784A (en) * | 2018-09-30 | 2019-02-22 | 淮阴工学院 | A kind of airtight mill system of recycling-guard |
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| CN110585844A (en) * | 2019-10-12 | 2019-12-20 | 杭州临安清云环保设备有限公司 | Plastic granulation waste gas treatment system and waste gas treatment process |
| CN113813940A (en) * | 2021-09-29 | 2021-12-21 | 江苏科仕达实验室环保科技有限公司 | Saturated activated carbon activation regeneration treatment process and control method |
| CN116196752A (en) * | 2023-02-22 | 2023-06-02 | 吴桥县六合德利化工有限责任公司 | Tail gas treatment process for producing OB acid by using thionyl chloride as raw material |
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Application publication date: 20180413 |