CN103664573B - Acetic acid waste gas Alkali absorption prepares the method for sodium acetate - Google Patents
Acetic acid waste gas Alkali absorption prepares the method for sodium acetate Download PDFInfo
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- CN103664573B CN103664573B CN201210355758.8A CN201210355758A CN103664573B CN 103664573 B CN103664573 B CN 103664573B CN 201210355758 A CN201210355758 A CN 201210355758A CN 103664573 B CN103664573 B CN 103664573B
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- alkali
- acetic acid
- waste gas
- alkali absorption
- sodium acetate
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
-
- 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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- 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
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Abstract
Acetic acid waste gas Alkali absorption prepares the method for sodium acetate, 1, by chemical industry or drug production process produce acetic acid waste gas by induced draft fan input Alkali absorption tower, carry out multistage alkali cyclic absorption, the evacuate air after absorption; 2, control Alkali absorption liquid temp between 30 to 70 DEG C, when pH value��10, add solid state hydrogen sodium oxide or sodium carbonate; 3, when the concentration adding sodium hydroxide or sodium carbonate reaches 25% to 50%, stop adding alkali, when Alkali absorption liquid pH value reaches between 8-to 9, Alkali absorption liquid is inputted crystallization kettle; 4, Alkali absorption liquid being cooled to-10 to 30 DEG C, centrifugal rejection filter, obtains sodium acetate trihydrate, it is possible to prepare anhydrous sodium acetate through 120 to 150 DEG C of dryings; 5, centrifuge mother liquor adds recycle in Alkali absorption tower, adds superoxol or potassium permanganate solution decolouring after mother liquor its colour changed into yellow; Its mother liquor can recirculation be applied mechanically, and produces without new waste water, waste gas, waste residue, and production process is cleaning, environmental protection, energy-conservation, efficient.
Description
Technical field
The present invention relates to pharmaceutical synthesis produce in field of waste treatment, be specifically related in Glucuronic acid .gamma.-lactone production process acetic acid waste gas recovery treatment process and acetic acid waste gas prepares the processing method of sodium acetate.
Background technology
In Glucuronic acid .gamma.-lactone production process, esterification uses acetic acid, when centrifugal drying material, producing a large amount of acetic acid gas, acetic acid gas has intense stimulus smell, affect production environment and atmospheric environment, early stage takes simple Water spray to absorb in producing, and absorbs not exclusively, and part acetic acid gas still enters air, operating environment of pollution and atmospheric environment, it is necessary to thoroughly administer.
Waste gas pollution control and treatment, it is necessary to have certain input, consumes new material, likely produces new pollution simultaneously. Preparing sodium acetate trihydrate with acetic acid waste gas Alkali absorption and anhydrous sodium acetate is purposes product widely, it has good shock-absorbing capacity, applies to plating and dyeing; There is antiseptic property, as the sanitas of food and feed; As water purifying assistant and stopping agent; Chemosynthesis is used wider. It is the fine chemical product that a kind of range of application is very wide.
Summary of the invention
It is an object of the invention to the defect for the process of acetic acid waste gas absorption in Glucuronic acid .gamma.-lactone production process, improve acetic acid waste gas absorption treatment process, utilize acetic acid waste gas to prepare sodium acetate for raw material production, solve acetic acid exhaust emission problem and a kind of method utilizing acetic acid waste gas Alkali absorption to prepare sodium acetate is provided.
The technical scheme realizing the object of the invention is:
A kind of acetic acid waste gas Alkali absorption is provided to prepare the method for sodium acetate, it is characterised in that: it is made up of following step:
1, by the acetic acid waste gas produced (as Glucuronic acid .gamma.-lactone is produced in centrifugal drying material process) in chemical industry or pharmaceutical production by producing induced draft fan input Alkali absorption tower, as the raw material producing sodium acetate, multistage alkali cyclic absorption is carried out, the evacuate air after absorption;
2, control Alkali absorption liquid temp between 30 to 80 DEG C, at any time by pH detection paper Alkali absorption liquid pH value, when pH value��10, add solid state hydrogen sodium oxide or sodium carbonate;
3, when the concentration that cumulative calculation adds sodium hydroxide or sodium carbonate reaches 25% to 50%, stop adding alkali, when Alkali absorption liquid pH value reaches between 8 to 9, Alkali absorption liquid is inputted crystallization kettle;
4, Alkali absorption liquid being cooled to-10 to 30 DEG C, centrifugal rejection filter, obtains sodium acetate trihydrate, and sodium acetate trihydrate can direct marketing, it is possible to prepare anhydrous sodium acetate through 120 to 150 DEG C of dryings;
5, centrifuge mother liquor adds recycle in Alkali absorption tower, adds superoxol or potassium permanganate solution decolouring after mother liquor its colour changed into yellow, ensures that applying mechanically mother liquor does not affect quality product.
Acetic acid waste gas described in step 1, comprise in Glucuronic acid .gamma.-lactone production process produce acetic acid waste gas, but be not limited in Glucuronic acid .gamma.-lactone production process produce acetic acid waste gas.
Carry out multistage Alkali absorption described in step 1, comprise 1-5 level Alkali absorption process.
Acetic acid waste gas Alkali absorption as above prepares the method for sodium acetate, it is characterised in that the alkali absorbing acetic acid waste gas includes but not limited to sodium hydroxide or sodium carbonate.
Control Alkali absorption liquid temp described in step 2 between 30---70 DEG C, to control at 50-65 DEG C as optimum.
It is evident that those skilled in the art also make absorption agent by potassium hydroxide, ammoniacal liquor etc. prepares potassium acetate, ammonium acetate by absorbing acetic acid waste gas, the displacement of absorption agent like this and the acetate moiety salt that obtains, do not depart from the essence place of the present invention.
In the present invention, acetic acid waste gas takes the mode of multi-stage column alkali cyclic absorption, and acetic acid off gas treatment is thorough; The raw material production sodium acetate costs such as acetic acid are substituted low with acetic acid waste gas; The absorption of relatively-high temperature circulation alkali, gradation is utilized to add the mode subtracting and improving acetic acid sodium reaction generation concentration, eliminate the concentrated technological process improving sodium acetate concentration, direct crystallization obtains sodium acetate, simplify technological process, reduce acetic acid waste gas Alkali absorption and produce the steam consumption in sodium acetate process and electricity consumption, reduce further production cost; Mother liquor recirculation is applied mechanically, it does not have new waste waste water, waste gas, waste residue produce, be clean, environmental protection, energy-conservation, High-efficient Production sodium acetate method.
Accompanying drawing explanation
Fig. 1 is that the present invention's acetic acid waste gas Alkali absorption in Glucuronic acid .gamma.-lactone is produced prepares the process flow diagram of sodium acetate trihydrate utilization.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described, but it are not limited to following examples:
Utilize acetic acid waste gas Alkali absorption to prepare sodium acetate trihydrate and prepare example:
Operate by the technological process of Fig. 1, 1000 liters, water is added respectively in one-level Alkali absorption tower He in two grades of Alkali absorption towers, 96% 200 kilograms, sodium hydroxide, it is heated between 55-60 DEG C and dissolves, pump is beaten cyclic absorption Glucuronic acid .gamma.-lactone workshop and is slightly got rid of the acetic acid waste gas carried and come, control Alkali absorption temperature is between 50-60 DEG C, solution ph in one-level Alkali absorption tower is measured at any time with pH test paper, when pH value is close to 10, add 96% sodium hydroxide, 400 kilograms are reached when the sodium hydroxide total amount that adds 96% in one-level Alkali absorption tower is accumulative, when liquid pH value to be absorbed reaches 8-9, absorbing liquid is inputted crystallization kettle, control-5 DEG C of crystallizations, rejection filter obtains sodium acetate trihydrate. crystallization filtrate cover is used in two-level absorption tower.
When after absorbing liquid input crystallization kettle in one-level Alkali absorption tower, absorbing liquid in two grades of Alkali absorption towers is proceeded to one-level Alkali absorption tower. Crystallization filtrate adds water and joins alkali-soluble agent as two grades of Alkali absorption, joins alkali every time and adds 200 kilograms, 96% sodium hydroxide and 15 liters of hydrogen peroxide. Carry out operate continuously successively as stated above, the continuous production sodium acetate trihydrate of cyclic absorption;
Here is the technical data of continuous 5 batches of production sodium acetate trihydrate:
Show the detailed embodiment of the present invention above, it will be apparent that the technician of this area, under the prerequisite not running counter to the present invention, can carry out part modifications and changes; The content mentioned in description above and accompanying drawing only illustratively illustration is not limitation of the present invention; The acetic acid waste gas Alkali absorption with technology feature described herein prepares the method for sodium acetate, all falls into this patent protection domain.
Claims (4)
1. an acetic acid waste gas Alkali absorption prepares the method for sodium acetate, it is characterised in that: it is made up of following step:
1, the acetic acid waste gas produced in chemical industry or pharmaceutical production is inputted Alkali absorption tower by induced draft fan, as the raw material producing sodium acetate, carry out multistage alkali cyclic absorption, the evacuate air after absorption;
2, control Alkali absorption liquid temp between 50--60 DEG C, when pH value��10, add solid state hydrogen sodium oxide or sodium carbonate;
3, when the concentration that cumulative calculation adds sodium hydroxide or sodium carbonate reaches 25% to 50%, stop adding alkali, when Alkali absorption liquid pH value reaches between 8 to 9, Alkali absorption liquid is inputted crystallization kettle;
4, Alkali absorption liquid being cooled to-10 to 30 DEG C, centrifugal rejection filter, obtains sodium acetate trihydrate, and sodium acetate trihydrate can direct marketing, it is possible to prepare anhydrous sodium acetate through 120 to 150 DEG C of dryings;
5, centrifuge mother liquor adds recycle in Alkali absorption tower, adds superoxol or potassium permanganate solution decolouring after mother liquor its colour changed into yellow.
2. acetic acid waste gas Alkali absorption as claimed in claim 1 prepares the method for sodium acetate, it is characterised in that: the acetic acid waste gas described in step 1, comprises in Glucuronic acid .gamma.-lactone production process the acetic acid waste gas produced.
3. acetic acid waste gas Alkali absorption as claimed in claim 1 prepares the method for sodium acetate, it is characterised in that: carry out multistage Alkali absorption described in step 1, comprise 1-5 level Alkali absorption process.
4. acetic acid waste gas Alkali absorption as claimed in claim 1 prepares the method for sodium acetate, it is characterised in that: the alkali of described absorption acetic acid waste gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210355758.8A CN103664573B (en) | 2012-09-24 | 2012-09-24 | Acetic acid waste gas Alkali absorption prepares the method for sodium acetate |
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| CN201210355758.8A CN103664573B (en) | 2012-09-24 | 2012-09-24 | Acetic acid waste gas Alkali absorption prepares the method for sodium acetate |
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| CN103664573A CN103664573A (en) | 2014-03-26 |
| CN103664573B true CN103664573B (en) | 2016-06-01 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104524951B (en) * | 2015-01-09 | 2017-04-26 | 南京格洛特环境工程股份有限公司 | Acid waste gas treatment and resource utilization |
| CN105948151A (en) * | 2016-05-12 | 2016-09-21 | 神华集团有限责任公司 | System and method for treating Fischer-Tropsch synthesis wastewater |
| CN106800506A (en) * | 2016-12-30 | 2017-06-06 | 杭州垚信生物科技有限公司 | A kind of preparation method of anhydrous sodium acetate |
| CN108892611B (en) * | 2018-06-27 | 2021-06-29 | 蓝保(厦门)水处理科技有限公司 | Production process of sodium acetate solution |
| CN111423322B (en) * | 2020-05-12 | 2021-08-20 | 杭州华环化工设备有限公司 | Sodium acetate preparation method and energy-saving preparation system thereof |
| CN112300166A (en) * | 2020-10-06 | 2021-02-02 | 湖北益泰药业股份有限公司 | Method for separating acyclovir and sodium acetate from mother liquor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0603548A1 (en) * | 1992-12-17 | 1994-06-29 | Hoechst Aktiengesellschaft | Acetate of sodium and alkaline earth metal, process of preparation and use |
| CN101429111A (en) * | 2008-12-17 | 2009-05-13 | 安徽富博医药化工股份有限公司 | Comprehensive processing method and apparatus for mother solution in production of glucurolactone |
| CN101898953A (en) * | 2009-05-27 | 2010-12-01 | 薛平 | Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid |
| CN102372619A (en) * | 2010-08-23 | 2012-03-14 | 刘同清 | Process for producing acetate by using dilute acetic acid |
-
2012
- 2012-09-24 CN CN201210355758.8A patent/CN103664573B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0603548A1 (en) * | 1992-12-17 | 1994-06-29 | Hoechst Aktiengesellschaft | Acetate of sodium and alkaline earth metal, process of preparation and use |
| CN101429111A (en) * | 2008-12-17 | 2009-05-13 | 安徽富博医药化工股份有限公司 | Comprehensive processing method and apparatus for mother solution in production of glucurolactone |
| CN101898953A (en) * | 2009-05-27 | 2010-12-01 | 薛平 | Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid |
| CN102372619A (en) * | 2010-08-23 | 2012-03-14 | 刘同清 | Process for producing acetate by using dilute acetic acid |
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Address after: 431700 fengchengyuan, Tianmen suburb, Jingzhou City, Hubei Province Patentee after: HUBEI YITAI PHARMACY Co.,Ltd. Address before: 431700 Hubei provincial administrative units under Fengcheng embankment on the outskirts of Tianmen Patentee before: HUBEI YITAI PHARMACEUTICAL Co.,Ltd. |
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