CN109304084A - Method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material - Google Patents
Method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material Download PDFInfo
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- CN109304084A CN109304084A CN201711133834.XA CN201711133834A CN109304084A CN 109304084 A CN109304084 A CN 109304084A CN 201711133834 A CN201711133834 A CN 201711133834A CN 109304084 A CN109304084 A CN 109304084A
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- exhaust gas
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- organic exhaust
- styrene
- waste gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—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
- B01D53/1493—Selection of liquid materials for use as absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—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
- B01D53/1487—Removing organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/40—Absorbents explicitly excluding the presence of water
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
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- 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
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses the method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material, are related to organic technical field of waste gas treatment.This method absorbs the organic exhaust gas first with absorption tower, and the organic exhaust gas after then absorbing enters adsorption system and adsorbed, and the organic exhaust gas after finally adsorbing enters qualified discharge after catalytic oxidation system processing.Absorbent such as diesel oil, ethylbenzene or the naphtha to styrene good absorbing are selected in absorption tower；The organic exhaust gas after absorption is adsorbed by adsorption tanks, by can effectively reduce organic exhaust gas concentration after activated carbon adsorption；After concentration after absorption fills into a certain amount of Dilution air by blower, newest national emission standard is finally met into catalysis oxidation.This method is handled organic exhaust gas by using the process route of " absorption+absorption+catalysis oxidation ", can be mixed to the organic exhaust gas containing styrene and be handled together, and recovery method of the present invention is safe and efficient, and can qualified discharge.
Description
Technical field
The present invention relates to VOCs treatment technical fields, and in particular to a kind of organic exhaust gas recycling side containing styrene
Method.
Background technique
Many chemical plant production styrene and other materials are not provided with organic waste gas recovery in storage and transportation link or administer ring
Section, in line exhaust emission atmospheric environment simultaneously endanger public health.The environmental regulations of country's latest edition are required to storage and transportation ring at present
The exhaust gas of section must carry out recycling and administration, and define characteristic contamination emission limit.
Part chemical company is administered using absorption absorption technique to containing styrene mix waste gas.Such as CN
102527185A discloses a kind of method of modified meerschaum absorption styrene waste gases, wherein first by low specific surface area sepiolite
It immerses in a certain proportion of water, constant temperature time of infusion, solution filters, and by filtration cakes torrefaction, is crushed；Certain volume salt is immersed again
Sour a period of time, solution is filtered, filtration cakes torrefaction, it is broken can obtain modified meerschaum, then modified meerschaum is packed into and is adsorbed
Tower contains the foul waste gas of styrene in 0~80 DEG C of efficient absorption, and the modified meerschaum of adsorption saturation is 150~350 DEG C of original positions
Styrene is desorbed, the styrene condensing recovery of high concentration recycles after sepiolite regeneration.However, this method is modified in preparation
Sepiolite technique is cumbersome, and later period desorption temperature is excessively high, easily there is security risk.
Tank field and entrucking styrene waste gases concentration are 30-50g/m under normal conditions3, this concentration enters activated carbon adsorption,
In view of styrene is easy to polymerize at an elevated temperature to form polystyrene, and activated carbon adsorption is an exothermic mistake
Journey is easy to styrene and polymerize in active carbon hole, and polymerization is also exothermic process, causes the further temperature rise of active carbon, benzene second
Alkene further polymerize, and domestic active charcoal directly adsorbs incidents of spontaneous combustion caused by styrene at present.Part Petrochemical Enterprises are adopted
With condensation method, residual styrene autohemagglutination in evaporator pipeline is caused to cause pipeline stifled due to heating up during condensing unit defrosting
Plug.Some Petrochemical Enterprises individually draw styrene waste gases, using potassium permanganate oxidation styrene, but its unstable products, it is right
Sewage disposal system has larger impact, and individually handles styrene, increases device, increases investment.
Summary of the invention
The purpose of the present invention is to provide the method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material,
This method is handled organic exhaust gas by using the process route of " absorption+absorption+catalysis oxidation ", can to contain benzene second
The organic exhaust gas mixing of alkene is handled together, and the recovery method is safe and efficient, and can qualified discharge.
Its technical solution includes:
A kind of method for organic waste gas recovery containing styrene, comprising the following steps: using absorption tower to the organic waste
Gas is absorbed, and the organic exhaust gas after absorption subsequently enters adsorption system and adsorbed, and the organic exhaust gas after absorption enters catalysis
Qualified discharge after oxidative system processing.
As a preferred solution of the present invention, the absorbent in the absorption tower is diesel oil, ethylbenzene or naphtha.
As another preferred embodiment of the invention, the adsorption system includes two adsorption tanks connected side by side, described
Adsorption tanks are provided with acticarbon.
Preferably, the adsorption tanks are respectively connected with desorption system, after reaching saturation to organic exhaust gas adsorption in adsorption tanks,
Vacuum regeneration is carried out to the adsorption tanks by the desorption system.
Preferably, if the concentration of styrene after absorption is greater than 5g/m3, then enter described urge after blower fills into Dilution air
Change oxidative system.
Preferably, the concentration of styrene control into absorption tower is 30~50g/m3, and after the absorption tower absorbs, benzene
Concentration≤500mg/m of ethylene3。
Preferably, the organic exhaust gas after the absorption tower absorbs is discharged from tower top, and from the bottom of the adsorption system
Into.
Preferably, the method is mainly used in tank field and entrucking material.
Compared with prior art, the present invention chooses diesel oil, naphtha, ethylbenzene etc. to the object of styrene good absorption effect first
Material is absorbed, and ensures that the concentration of styrene is reduced to 500mg/m after absorbing3, to avoid there is styrene in activated adoption
There is the case where autohemagglutination temperature rise leads to active carbon spontaneous combustion generation in stage, and avoiding styrene autohemagglutination is multichain point after polystyrene
The drawbacks of son can not be desorbed in active carbon extends active carbon service life；Secondly, passing through two adsorption tanks pair connected side by side
Organic exhaust gas after absorption is adsorbed, by can effectively reduce organic exhaust gas concentration after activated carbon adsorption, and after adsorption saturation
High-concentration organic waste gas can be sent into absorption tower by vacuum desorption and re-start absorption.Concentration after absorption passes through blower
After filling into a certain amount of Dilution air, newest national emission standard (such as benzene≤4mg/m is finally met into catalysis oxidation3, first
Benzene≤15mg/m3, dimethylbenzene≤20mg/m3, styrene≤50mg/m3, non-methane total hydrocarbons≤120mg/m3Deng).
The present invention can mix the organic exhaust gas containing styrene and handle together, can accomplish safe and efficient improvement,
And it can guarantee emission compliance.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawing:
Fig. 1 is a preferred embodiment of the present invention process flow chart；
In figure, 1, absorption tower, 2, adsorption system, 3, desorption system, 4, catalytic oxidation system.
Specific embodiment
The invention discloses the method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material, in order to make this
The advantages of invention, technical solution are clearer, clear, elaborate combined with specific embodiments below to the present invention.
Firstly, in raw material selected by the present invention, such as diesel oil, naphtha, ethylbenzene absorb preferable solvent to styrene,
It can be bought and be obtained by commercial channel.
The organic exhaust gas containing styrene of following embodiment processing comes from chemical plant jack works, there is styrene dress respectively
All kinds of materials such as vehicle, toluene entrucking, benzene entrucking.
The present invention contains the method for organic waste gas recovery of styrene, comprising the following steps:
(1) organic exhaust gas is absorbed using absorption tower, organic exhaust gas is passed into absorption tower through gas gathering line, is absorbed
Absorbent in tower chooses diesel oil, naphtha, ethylbenzene etc. to styrene good absorption effect, into the organic exhaust gas on absorption tower
The concentration of middle styrene need to be controlled in 30~50g/m3, and after the absorption tower absorbs, concentration≤500mg/m of styrene3,
This and is kept away in order to avoid styrene occur in the activated adoption stage and the case where autohemagglutination temperature rise leads to active carbon spontaneous combustion generation occur
Exempt from styrene autohemagglutination as the drawbacks of after polystyrene, multichain molecule can not be desorbed in active carbon, extends active carbon service life；
(2) organic exhaust gas after absorption tower absorbs, from its top discharge, wherein can also carry other exhaust gas, then into
Enter in the adsorption tanks of adsorption system, the purpose that two adsorption tanks are arranged is: alternately adsorbing respectively, when wherein an absorption is full
With it is rear, carry out vacuum regeneration, switch to another adsorption tanks at this time and adsorbed.Two adsorption tanks are provided with active carbon, organic
Exhaust gas enters from the bottom of adsorption tanks, is discharged after the absorption of active carbon from the top of adsorption tanks, when the active carbon in adsorption tanks
After absorption reaches saturation, vacuum regeneration is carried out to adsorption tanks by the vacuum pump in desorption system connected to it, after desorption
High-concentration waste gas reenters in absorption tower 1；
(3) organic exhaust gas after absorbing enters qualified discharge after catalytic oxidation system processing, it is desirable that: enter catalysis oxidation
The concentration of styrene of system is less than 5~10g/m3If being higher than this value, Dilution air post-processing can be filled into through blower.
The recovery method of above-mentioned organic exhaust gas can be used for at the organic exhaust gas generated in tank field and entrucking material
Reason.
Various structures mode can be used to realize in the above-mentioned method for organic waste gas recovery containing styrene, only provides one below
Kind preferred embodiment, to make more specific detail to the present invention, but it should not be used as limiting the scope of the invention.
As shown in Figure 1, the apparatus structure includes absorption tower 1, adsorption system 2, desorption system 3 and catalytic oxidation system 4,
In, the built-in naphtha to styrene good absorbing in absorption tower 1, adsorption system 2 is made of two side-by-side adsorption tanks, is inhaled with two
It is attached tank connected for desorption system 3 and catalytic oxidation system 4.
Specific operating procedure are as follows: tank field and entrucking contain styrene, toluene, benzene mixing organic exhaust gas pass through gas collecting tube
Line enters in absorption tower 1, and absorbent is the naphtha that plant area attracts and recycles that naphtha absorbs organic exhaust gas,
The tower overhead gas on absorption tower 1 is essentially the exhaust gas that absorbent naphtha itself volatilizees after absorption, under conditions of 20 DEG C, the non-first of exhaust gas
Alkane total hydrocarbon concentration is about 1000g/m3, benzene 1g/m3, toluene 1.72g/m3, styrene is absorbed completely substantially.Behind absorption tower 1
Exhaust gas enters adsorption system 2, and adsorption system is made of the adsorption tanks equipped with charcoal canister, and the non-methane total hydrocarbons concentration after absorption is about
For 50g/m3.After adsorption saturation, vacuum regeneration is carried out by adsorption tanks of the vacuum pump in desorption system 3 to adsorption system 2, is taken off
Attached high-concentration waste gas, which reenters, carries out absorption recycling in absorption tower 1.Gas after absorption fills into Dilution air by blower
About 5g/m after ten times3, after being reacted into catalytic oxidation system 4, generate carbon dioxide and water, organic exhaust gas concentration can satisfy state
The newest discharge standard of family, benzene≤4mg/m3, toluene≤15mg/m3, styrene≤50mg/m3, non-methane total hydrocarbons≤120mg/m3
Deng.
Above-mentioned naphtha can also be replaced with diesel oil, ethylbenzene.
The present invention by using " absorption+absorption+catalysis oxidation " process route, using absorption tower to containing styrene
Mixing organic exhaust gas is absorbed, and tower top exhaust gas enters adsorption system, by the exhaust gas after activated carbon adsorption, passes through catalysis oxidation
System is finally discharged.By rationally controlling the concentration of styrene, it can avoid the security risks such as spontaneous combustion existing in the prior art.
The related technology contents that do not address in aforesaid way are taken or are used for reference prior art and can be realized.
It should be noted that those skilled in the art can also make such or such appearance under the introduction of this specification
Easy variation pattern, such as equivalent way or obvious mode of texturing.Above-mentioned variation pattern should all protection scope of the present invention it
It is interior.
Claims (8)
1. a kind of method for organic waste gas recovery containing styrene, it is characterised in that the following steps are included: using absorption tower to institute
It states organic exhaust gas to be absorbed, the organic exhaust gas after absorption subsequently enters adsorption system and adsorbed, the organic exhaust gas after absorption
Qualified discharge after into catalytic oxidation system processing.
2. the method for organic waste gas recovery according to claim 1 containing styrene, it is characterised in that: in the absorption tower
Absorbent be diesel oil, ethylbenzene or naphtha.
3. the method for organic waste gas recovery according to claim 1 containing styrene, it is characterised in that: the adsorption system
The adsorption tanks connected side by side including two, the adsorption tanks are provided with acticarbon.
4. the method for organic waste gas recovery according to claim 3 containing styrene, it is characterised in that: the adsorption tanks are equal
It is connected with desorption system, after reaching saturation to organic exhaust gas adsorption in adsorption tanks, by the desorption system to the absorption
Tank carries out vacuum regeneration.
5. the method for organic waste gas recovery according to claim 1 containing styrene, it is characterised in that: if the benzene after absorption
Ethylene concentration is greater than 5g/m3, then enter the catalytic oxidation system after blower fills into Dilution air.
6. the method for organic waste gas recovery according to claim 1 containing styrene, it is characterised in that: into absorption tower
Concentration of styrene control is 30~50g/m3, and after the absorption tower absorbs, concentration≤500mg/m of styrene3。
7. the method for organic waste gas recovery according to claim 1 containing styrene, it is characterised in that: through the absorption tower
Organic exhaust gas after absorption is discharged from tower top, and enters from the bottom of the adsorption system.
8. the method for organic waste gas recovery according to claim 1 containing styrene, it is characterised in that: the method is used for
The organic exhaust gas generated in tank field and entrucking material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133834.XA CN109304084A (en) | 2017-11-16 | 2017-11-16 | Method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711133834.XA CN109304084A (en) | 2017-11-16 | 2017-11-16 | Method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material |
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| CN109304084A true CN109304084A (en) | 2019-02-05 |
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| CN201711133834.XA Pending CN109304084A (en) | 2017-11-16 | 2017-11-16 | Method for organic waste gas recovery containing styrene in a kind of tank field and entrucking material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111249859A (en) * | 2020-02-18 | 2020-06-09 | 青岛诺诚化学品安全科技有限公司 | Low-temperature absorption-low-temperature catalytic oxidation method waste gas recovery treatment process |
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| CN103908868A (en) * | 2014-04-15 | 2014-07-09 | 大连理工大学 | Separation method for removing styrene from ethylbenzene-dehydrogenation tail gas and recovering hydrogen |
| CN204656279U (en) * | 2015-05-19 | 2015-09-23 | 南京都乐制冷设备有限公司 | The absorption type recycling phenylethylene system that a kind of normal pressure is resolved |
| CN204865443U (en) * | 2015-08-13 | 2015-12-16 | 中国石油化工股份有限公司 | Exhaust gas treating device |
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2017
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| CN101073742A (en) * | 2007-06-06 | 2007-11-21 | 江苏莱顿宝富塑化有限公司 | Method for absorbing vacuum tailed gas in production of polystyrene |
| CN203389497U (en) * | 2013-08-28 | 2014-01-15 | 宁波弘景环保科技有限公司 | Coating waste gas treatment device |
| CN103908868A (en) * | 2014-04-15 | 2014-07-09 | 大连理工大学 | Separation method for removing styrene from ethylbenzene-dehydrogenation tail gas and recovering hydrogen |
| CN204656279U (en) * | 2015-05-19 | 2015-09-23 | 南京都乐制冷设备有限公司 | The absorption type recycling phenylethylene system that a kind of normal pressure is resolved |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111249859A (en) * | 2020-02-18 | 2020-06-09 | 青岛诺诚化学品安全科技有限公司 | Low-temperature absorption-low-temperature catalytic oxidation method waste gas recovery treatment process |
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