CN101735046B - Method for processing industrial effluent of acetic ether - Google Patents
Method for processing industrial effluent of acetic ether Download PDFInfo
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- CN101735046B CN101735046B CN2009102143831A CN200910214383A CN101735046B CN 101735046 B CN101735046 B CN 101735046B CN 2009102143831 A CN2009102143831 A CN 2009102143831A CN 200910214383 A CN200910214383 A CN 200910214383A CN 101735046 B CN101735046 B CN 101735046B
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- acetic ether
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a method for processing industrial effluent of acetic ether. The traditional production of the acetic ether uses concentrated sulfuric acid as catalyst to causes problems of strong causticity, many by-products, great amount of produced acidic wastes, troublesome waste treatment and incomplete treatment, thereby wasting resources and polluting the environment. In the invention, the method of preprocessing and process integration is used to recycle the industrial waste of the acetic ether. A device used by the method comprises an esterification kettle, an esterification tower, a condenser and a phase splitter for the acetic ether technique, also comprises an esterification kettle of propyl acetate technique, an esterification kettle of butyl acetate technique, a filtering device and relevant auxiliary apparatuses. By using the invention, the problems of the troublesome waste treatment, resource waste and environmental pollution are solved, 100000-150000 RMB of cost can be saved per year by adopting the method through calculation, thereby good social economic benefits are created.
Description
Technical field
The present invention relates to a kind of treatment process of industrial effluent of acetic ether, specifically is to adopt the method Dichlorodiphenyl Acetate ethyl ester industrial waste of filtration facility pre-treatment and acetates process integration to carry out recycle.
Background technology
ETHYLE ACETATE has another name called vinyl acetic monomer, is one of most widely used fatty ester, has good solubility property, is a kind of drip-dry, fabulous solvent.ETHYLE ACETATE is widely used in productions such as cellulose acetate, ethyl cellulose, chlorinated rubber, ethene resin, acetate fiber resin, viton; Also can be used for producing used in copy machines liquid nitrocellulose ink; In textile industry, be used as clean-out system; Be used as the fragrance extraction agent of special modification alcohol in the foodstuffs industry; Be most important spice additive in the perfume industry, can be used as the component of deodorant tune.In addition, vinyl acetic monomer also can be used as the solvent of tackiness agent, the thinner of paint and the raw material of making medicine, dyestuff.
The preparation method of vinyl acetic monomer mainly contains acid esterification method, ethene additive process, acetaldehyde condensation method and alcohol dehydrogenase method etc.At present, what domestic industry production vinyl acetic monomer generally adopted is traditional sulfuric acid catalysis esterification process, and in traditional vinyl acetic monomer production process, the material corrosion is strong, and side reaction is more obvious, produces to occur fluctuation easily, and material consumption is higher.Produce long-term operation continuously and can produce a certain amount of esterification waste material.
Usually, the treatment process of this waste material is:
1, the waste recovery tower simply recycles;
2, directly sell the waste material buyer agent at a low price;
3, discharge after the simple process.
This above method all can directly or indirectly cause phenomenons such as the wasting of resources, environmental pollution, has violated country-driven energy-saving and emission-reduction policy.
Summary of the invention
The invention provides a kind of treatment process of industrial effluent of acetic ether, this method has solved conventional esterification methods and has prepared troublesome waste treatment that vinyl acetic monomer occurs, material waste and problem such as seriously polluted.
The treatment process of this industrial effluent of acetic ether provided by the invention; Its characteristic comprises: raw material acetic acid, ethanol and a recovery ester get into an esterifying kettle; After reaction under the effect of catalyzer, make the thick ester of vinyl acetic monomer after through preliminary rectifying, phase-splitting, thick ester content is 85-95%.Produce a certain amount of esterification waste material owing to producing long-term operation continuously.Waste material reuses in entering propyl ester and the butyl ester esterifying kettle through after filtering pre-treatment, and propyl ester and butyl ester production are not had influence basically.
In the treatment process of described a kind of industrial effluent of acetic ether, ethyl ester esterification waste liquid total acid content is 50-90w%, and vinyl acetic monomer content is 0-10w%, and water-content is 5-40w%, and temperature is 90-130 ℃.
In the treatment process of described a kind of industrial effluent of acetic ether, waste material is through after filtering pre-treatment, and small amount of solid impurity is removed, and avoids long-term circulation and accumulation causes the phenomenon of line clogging to take place.
The present invention is on the basis of existing production equipment, only increases filtration facility and part pipeline valve, and the newly-increased investment expense is low.
The present invention obtains following effect after using:
(1) practices thrift resource, comprised materials such as raw material and catalyzer.
(2) remove the trouble of seeking third party's processing from; Can initiatively timely process for producing waste material.
(3) realize zero release basically, eliminated in the past treatment process the pollution condition of environment.
(4) exempt from regenerating column bulk processing operation, save the troublesome poeration of this tradition recovery process simultaneously with waste material; The increase expense is merely inputs such as filtration facility and section of tubing, thereby has reduced equipment and dropped into expense.
(5) remarkable in economical benefits of the present invention: through calculating, this process method can be saved ten thousand yuan of cost 10-15 every year, has created favorable social and economic benefits.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Wherein: 1-vinyl acetic monomer esterifying kettle; 2-vinyl acetic monomer esterification column; 3-garbage collection groove; The 4-filtration facility; 5-propyl acetate esterifying kettle; 6-N-BUTYL ACETATE esterifying kettle.
Embodiment
Embodiment 1:
The vinyl acetic monomer industrial waste is mainly produced by ethyl ester esterifying kettle 1, and trash discharge is looked esterification column 2 running operating modes and decided.In the waste material, acid content is 85%, and vinyl acetic monomer content is 3%, and water-content is 10%, and temperature is 130 ℃, the garbage collection of being arranged to garbage collection jar 3.When the waste material of collecting reaches 5m
3After, can squeeze into filtration facility 4 by 3 and carry out pre-treatment.After removing small amount of solid impurity, waste material gets into propyl ester esterifying kettle 5 and reacts.When waste material adds the propyl acetate esterifying kettle, look acid, water and ester content relevant controlling index is suitably adjusted, wherein emphasis includes: indexs such as acetic acid inlet amount, esterification backflow, temperature of reaction, the control of introducing trace impurity.Facts have proved, the timely processing and utilizing of the industrial waste of vinyl acetic monomer, Dichlorodiphenyl Acetate propyl ester production influence is very little, has ensured that simultaneously vinyl acetic monomer production is stable, has improved the cyclic utilization rate of material.The application of this inventive method needs newly-increased investment partly to be merely valve pipe and filtration facility, has saved traditional equipment such as waste recovery tower simultaneously, has reduced equipment and has dropped into expense.Through calculating, use this inventive method after, can save ten thousand yuan of cost 10-15 every year, created favorable social and economic benefits.
Embodiment 2:
The vinyl acetic monomer industrial waste is mainly produced by ethyl ester esterifying kettle 1, and trash discharge is looked esterification column 2 running operating modes and decided.In the waste material, acid content is 60%, and the vinyl acetic monomer mass content is 8%, and quality content is 30%, and temperature is 110 ℃, the garbage collection of being arranged to garbage collection jar 3.When the waste material of collecting reaches 5m
3After, can squeeze into filtration facility 4 by 3 and carry out pre-treatment.After removing small amount of solid impurity, this waste material gets into butyl ester esterifying kettle 6 and carries out recycle.When waste material adds the N-BUTYL ACETATE esterifying kettle, look acid, water and ester content relevant controlling index is suitably adjusted.Facts have proved that the industrial waste of vinyl acetic monomer is processing and utilizing timely, Dichlorodiphenyl Acetate butyl ester production influence is very little, and it is stable to have ensured that simultaneously vinyl acetic monomer is produced, and has improved the cyclic utilization rate of material.Traditional recovery and treatment method is because the process technology limit processing is not thorough, and cost recovery is high, not only wants the equipment input, and energy consumption is also big, still has spent acid and the organism of 10%-35% after the processing, the uneconomical also not environmental protection of subsequent disposal.After adopting the inventive method,, can save ten thousand yuan of cost 10-15 every year, create favorable social and economic benefits through calculating.
Claims (3)
1. the treatment process of an industrial effluent of acetic ether; Said method comprises: raw material acetic acid, ethanol and a recovery ester get into a vinyl acetic monomer esterifying kettle; After reaction under the effect of catalyzer, make the thick ester of vinyl acetic monomer after through preliminary rectifying, condensation phase-splitting, thick ester content is 85-95%; Produce a certain amount of esterification waste material owing to producing long-term operation continuously, after the small amount of solid foreign material are removed in the pre-treatment of said esterification waste material process filtration facility, get into recycle in propyl acetate or the N-BUTYL ACETATE esterifying kettle.
2. according to the treatment process of a kind of industrial effluent of acetic ether described in the claim 1, it is characterized in that said esterification waste material total acid content is 50-90w%, the vinyl acetic monomer mass content is 0-10w%, and water-content is 5-40w%, and temperature is 90-130 ℃.
3. according to the treatment process of a kind of industrial effluent of acetic ether described in the claim 1, it is characterized in that said esterification waste material directly gets into recycle in propyl acetate esterifying kettle or the N-BUTYL ACETATE esterifying kettle through after the pre-treatment, has saved raw material and catalyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102143831A CN101735046B (en) | 2009-12-28 | 2009-12-28 | Method for processing industrial effluent of acetic ether |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102143831A CN101735046B (en) | 2009-12-28 | 2009-12-28 | Method for processing industrial effluent of acetic ether |
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| CN101735046A CN101735046A (en) | 2010-06-16 |
| CN101735046B true CN101735046B (en) | 2012-05-30 |
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| CN2009102143831A Expired - Fee Related CN101735046B (en) | 2009-12-28 | 2009-12-28 | Method for processing industrial effluent of acetic ether |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103253719A (en) * | 2013-04-08 | 2013-08-21 | 江苏诚信制药有限公司 | Production process system for ethyl lactate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226884A (en) * | 1997-03-26 | 1999-08-25 | 英国石油化学品有限公司 | Ester co-production |
| CN101100329A (en) * | 2007-06-22 | 2008-01-09 | 张立省 | Method for reusing waste water reclaimed from ethyl acetate production |
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- 2009-12-28 CN CN2009102143831A patent/CN101735046B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226884A (en) * | 1997-03-26 | 1999-08-25 | 英国石油化学品有限公司 | Ester co-production |
| CN101100329A (en) * | 2007-06-22 | 2008-01-09 | 张立省 | Method for reusing waste water reclaimed from ethyl acetate production |
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| CN101735046A (en) | 2010-06-16 |
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