CN101898953A - Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid - Google Patents
Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid Download PDFInfo
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- CN101898953A CN101898953A CN2009100156837A CN200910015683A CN101898953A CN 101898953 A CN101898953 A CN 101898953A CN 2009100156837 A CN2009100156837 A CN 2009100156837A CN 200910015683 A CN200910015683 A CN 200910015683A CN 101898953 A CN101898953 A CN 101898953A
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- reaction
- waste liquid
- chemical
- sodium acetate
- acephate
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Abstract
The invention discloses a technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid and belongs to the field of chemical engineering. In the technological research, chemical reaction is accelerated by using a microwave technique, solid-liquid separation is realized by using a distillation technique, sodium carbonate is added for reaction so as to turn acetic acid which is difficult to separate and has relatively low value into the sodium acetate which is easy to separate and has high added value, and chemical analysis is performed on the waste liquid to determine chemical components of the waste liquid and draw up a separation method; meanwhile, an optimal scheme is adopted to determine a method for adding reactants and accelerating the reaction rate; a resultant is separated and purified, and finally a qualified product is produced.
Description
Technical field
The comprehensive utilization chemical waste liquid is produced the sodium-acetate technical study, belongs to chemical field.
Background technology
Pesticide producing enterprise produces a large amount of waste liquids in producing the acephate process, arbitrarily discharging can cause serious environmental to pollute, and focuses on sewage work and handles, and expense is very high and be difficult to processing.This problem is a great problem of agricultural chemicals enterprise always.Both at home and abroad the expert selects multiple separating pathway to carry out separation and Extraction by analysis of experiments, and is all excessive because of the extract water content, is worth low, extraction cost height and can't be used for industrial production.
Summary of the invention
I am by consulting a large amount of data at home and abroad, on the basis that test of many times is analyzed, introduce the microwave technology principle and promote speed of response, add the yellow soda ash reaction and generate sodium-acetate, produce sodium-acetate and remove excessive moisture by distillation component technology, produce solid ammonium sulfate simultaneously.Thereby a series of difficult problems have been solved, working out a kind of new processing method handles this waste liquid and produces high-quality sodium-acetate, the technical advanced person of present method, production cost is low, has very high using value, be applied to the liquid waste disposal that produces in the chemical industry agricultural chemicals generative process, to curbing environmental pollution, develop a circular economy, increase economic efficiency, establish the Scientific Outlook on Development, promote the good and fast development of economic society to have crucial meaning
Embodiment
1, the present invention adopts microwave technology to accelerate chemical reaction velocity, adopt distillation technique to realize that thing liquid separates, make to be difficult to separate and to be worth lower acetic acid and change into and be easy to separate and sodium-acetate that added value is high by adding the yellow soda ash reaction, by waste liquid is carried out chemical analysis, determine the waste liquid Chemical Composition, draft separation method, take optimized scheme simultaneously.Determine to add the method for reactant and fast reaction speed.Resultant is separated purification, and final production goes out qualified product.
Emphasis of the present invention is chemical ingredients and a content of determining to produce the waste liquid that produces in the acephate process, and the reaction process of producing acephate is: o-dime thyl phosphoroamidothioate+aceticanhydride--→ acephate+acetic acid
Adopt dilute sulphuric acid to make catalyzer in the reaction process, the resultant of reaction acephate is separated out with powder, centrifugation.From reaction process, its residuum (waste liquid) main component is water, acetic acid, ammonium sulfate and reactant and the resultant thoroughly do not retained because of reaction, can measure its content by chemical analysis.
The difficult point of this project is the design separation scheme, and because of acetic acid and water molecules power are bigger, and the acetic acid price is low, and the straight run distillation separating acetic acid does not have economic worth, add yellow soda ash after, generate sodium-acetate and both be convenient to separation, also improved added value of product.In addition,, intend adopting the microwave technology fast reaction speed, reach energy saving purposes for improving speed of response.
2, the method that adopts theoretical analysis and experiment to combine is formulated operational path, and testing data is carried out linear regression analysis, determines best process flow and optimal processing parameter.Its technological line is: waste collection → primary distillation → adding yellow soda ash (microwave heating) → distillation → crystallization → centrifugation (sodium-acetate) → packing of product.
3, Specialty and innovation part of the present invention:
(1) this project employing new and high technology is that microwave promotes reaction, makes reaction quickening and thorough, has improved product recovery rate. Reaching energy-saving and cost-reducing purpose, is a greatly innovation of this technical field.
(2) this project disposes waste liquid and combines with the production products that are in short supply, has increased single step reaction, obtains better effects.
(3) this project the finished product are sodium-acetate crystal (containing 3 crystal water), and moisture is removed by distillation and evaporation, and the reaction refuse is an ammonium sulfate solids, can make fertilizer through simple process and use.Really reach utilization of waste material, turn waste into wealth.
Claims (2)
1. the present invention adopts microwave technology to accelerate chemical reaction velocity, adopt distillation technique to realize that thing liquid separates, make to be difficult to separate and to be worth lower acetic acid and change into and be easy to separate and sodium-acetate that added value is high by adding the yellow soda ash reaction, by waste liquid is carried out chemical analysis, determine the waste liquid Chemical Composition, adopt dilute sulphuric acid to make catalyzer in the reaction process, the resultant of reaction acephate is separated out with powder, centrifugation is purified, and the reaction process of producing acephate is: o-dime thyl phosphoroamidothioate+aceticanhydride → acephate+acetic acid final production goes out qualified product.
2. the method that adopts theoretical analysis and experiment to combine is formulated operational path, testing data is carried out linear regression analysis, determine best process flow and optimal processing parameter, its technological line is: waste collection → primary distillation → adding yellow soda ash (microwave heating) → distillation → crystallization → centrifugation (sodium-acetate) → packing of product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100156837A CN101898953A (en) | 2009-05-27 | 2009-05-27 | Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100156837A CN101898953A (en) | 2009-05-27 | 2009-05-27 | Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101898953A true CN101898953A (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100156837A Pending CN101898953A (en) | 2009-05-27 | 2009-05-27 | Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid |
Country Status (1)
| Country | Link |
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| CN (1) | CN101898953A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664573A (en) * | 2012-09-24 | 2014-03-26 | 湖北益泰药业有限公司 | Method for preparing sodium acetate from acetic acid waste gas through alkaline absorption |
| CN105272843A (en) * | 2015-11-18 | 2016-01-27 | 盐城师范学院 | Method for recycling dimethyl sulfoxide and natrium aceticum from chemical industry production waste residues |
| CN105601499A (en) * | 2016-01-04 | 2016-05-25 | 北京科技大学 | Method for separating sodium acetate solution containing sodium sulfate |
| CN109293500A (en) * | 2018-10-19 | 2019-02-01 | 郴州高鑫铂业有限公司 | A kind of method of Microwave-assisted synthesis acetic acid iridium |
-
2009
- 2009-05-27 CN CN2009100156837A patent/CN101898953A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103664573A (en) * | 2012-09-24 | 2014-03-26 | 湖北益泰药业有限公司 | Method for preparing sodium acetate from acetic acid waste gas through alkaline absorption |
| CN103664573B (en) * | 2012-09-24 | 2016-06-01 | 湖北益泰药业有限公司 | Acetic acid waste gas Alkali absorption prepares the method for sodium acetate |
| CN105272843A (en) * | 2015-11-18 | 2016-01-27 | 盐城师范学院 | Method for recycling dimethyl sulfoxide and natrium aceticum from chemical industry production waste residues |
| CN105601499A (en) * | 2016-01-04 | 2016-05-25 | 北京科技大学 | Method for separating sodium acetate solution containing sodium sulfate |
| CN109293500A (en) * | 2018-10-19 | 2019-02-01 | 郴州高鑫铂业有限公司 | A kind of method of Microwave-assisted synthesis acetic acid iridium |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101201 |