CN103664573A - Method for preparing sodium acetate from acetic acid waste gas through alkaline absorption - Google Patents
Method for preparing sodium acetate from acetic acid waste gas through alkaline absorption Download PDFInfo
- Publication number
- CN103664573A CN103664573A CN201210355758.8A CN201210355758A CN103664573A CN 103664573 A CN103664573 A CN 103664573A CN 201210355758 A CN201210355758 A CN 201210355758A CN 103664573 A CN103664573 A CN 103664573A
- Authority
- CN
- China
- Prior art keywords
- acetic acid
- waste gas
- alkali
- acid waste
- sodium acetate
- Prior art date
- 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.)
- Granted
Links
Images
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to a method for preparing sodium acetate from acetic acid waste gas through alkaline absorption. The method comprises the following steps: 1, inputting acetic acid waste gas to an alkaline absorption tower through an induced draft fan to carry out multistage circulated alkaline absorption, and emptying the absorbed air, wherein the acetic acid waste gas is generated in a chemical industry or drug production process; 2, controlling the alkaline absorption liquid temperature between 30 DEG C and 80 DEG C, and adding solid sodium hydroxide or sodium carbonate when the pH value is less than or equal to 10; 3, stopping adding alkaline when the concentration of the added sodium hydroxide or sodium carbonate is up to 25-50%, and inputting alkaline absorption liquid to a crystallization kettle when the pH value of the alkaline absorption liquid is up to 8-9; 4, cooling the alkaline absorption liquid to 10 DEG C below zero to 30 DEG C, and carrying out centrifugal swing filtration to obtain sodium acetate trihydrate, or drying at the temperature of 120-150 DEG C to prepare anhydrous sodium acetate; and 5, adding centrifuged mother liquid into the alkaline absorption tower to be recycled, adding a hydrogen dioxide solution or potassium permanganate solution to decolor after the mother liquid turns yellow, wherein the mother liquid can be recycled. No new waste water, waste gas and waste residue are generated, and the production process is clean, environment-friendly, energy-saving and efficient.
Description
Technical field
Field of waste treatment in the present invention relates to that medicine is synthetic and producing, is specifically related to the processing method that acetic acid waste gas recovery and treatment method and acetic acid waste gas in Glucuronic acid .gamma.-lactone production process are prepared sodium acetate.
Background technology
?
In Glucuronic acid .gamma.-lactone production process, esterification is used acetic acid, when centrifugal drying material, produce a large amount of acetic acid gas, acetic acid gas has intense stimulus smell, affect production environment and atmospheric environment, take simple water spray-absorption in producing early stage, absorbs not exclusively, and part acetic acid gas still enters atmosphere, operating environment of pollution and atmospheric environment, must thoroughly administer.
Waste gas pollution control and treatment must have certain input, consumes new material, likely produces new pollution simultaneously.With acetic acid waste gas alkali absorption preparation sodium acetate trihydrate and anhydrous sodium acetate, be broad-spectrum product, it has good shock-absorbing capacity, applies to electroplate and dyeing; There is antiseptic property, as the sanitas of food and feed; As water purifying assistant and stopping agent; In chemosynthesis, use wider.It is a kind of fine chemical product being of wide application.
Summary of the invention
?
The object of the invention is the defect of processing for 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 provide a kind of acetic acid waste gas alkali that utilizes to absorb the method for preparing sodium acetate
The technical scheme that realizes the object of the invention is:
Provide a kind of acetic acid waste gas alkali to absorb the method for preparing sodium acetate, it is characterized in that: it consists of following steps:
1, the acetic acid waste gas that in chemical industry or pharmaceutical production, (as Glucuronic acid .gamma.-lactone is produced in centrifugal drying material process) produces is inputted to alkali absorption tower by producing induced draft fan, as the raw material of producing sodium acetate, carry out multistage alkali circulation and absorb, the gas after absorption is emptying;
2, control alkali absorption liquid temperature between 30 to 80 ℃, use at any time pH detection paper alkali absorption liquid pH value, when pH value≤10, add solid state hydrogen sodium oxide or sodium carbonate;
When 3, cumulative calculation adds the concentration of sodium hydroxide or sodium carbonate to reach 25% to 50%, stop adding alkali, in the time of between alkali absorption liquid pH value reaches 8 to 9, by alkali absorption liquid input crystallization kettle;
4, alkali absorption liquid is cooled to-10 to 30 ℃, centrifugal rejection filter, obtains sodium acetate trihydrate, and sodium acetate trihydrate can direct marketing, also can be through 120 to 150 ℃ of dry anhydrous sodium acetates of preparing;
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, guarantees that applying mechanically mother liquor does not affect quality product.
Acetic acid waste gas described in step 1, comprises the acetic acid waste gas producing in Glucuronic acid .gamma.-lactone production process, but is not limited to the acetic acid waste gas that produces in Glucuronic acid .gamma.-lactone production process.
Described in step 1, carry out multistage alkali absorption, comprise 1-5 level alkali absorption process.
Acetic acid waste gas alkali as above absorbs the method for preparing sodium acetate, it is characterized in that absorbing the alkali that acetic acid waste gas uses and includes but not limited to sodium hydroxide or sodium carbonate.
Control alkali absorption liquid temperature described in step 2, between 30---80 ℃, be take and is controlled at 50-65 ℃ as optimum.
Obviously, those skilled in the art also can make absorption agent by potassium hydroxide, ammoniacal liquor etc. and prepare potassium acetate, ammonium acetate by absorbing acetic acid waste gas, and the displacement of suchlike absorption agent and the acetate moiety salt that obtains do not depart from the present invention's essence place.
In the present invention, acetic acid waste gas is taked the mode that the circulation of multi-stage column alkali absorbs, and acetic acid off gas treatment is thorough; With acetic acid waste gas, substitute the raw material production sodium acetate costs such as acetic acid low; Utilize the mode that relatively-high temperature circulation alkali absorbs, gradation plus-minus improves acetic acid sodium reaction generation concentration, removed the technological process of concentrated raising sodium acetate concentration from, direct crystallization obtains sodium acetate, simplified technological process, reduce acetic acid waste gas alkali and absorbed steam consumption and the power consumption of producing in sodium acetate process, further reduced production cost; Mother liquor recirculation is applied mechanically, and does not have new waste waste water,waste gas and industrial residue to produce, be clean, the method for environmental protection, energy-conservation, High-efficient Production sodium acetate.
Accompanying drawing explanation
Fig. 1 is that the present invention's acetic acid waste gas alkali in Glucuronic acid .gamma.-lactone is produced absorbs the process flow diagram that preparation sodium acetate trihydrate is used.
?
Embodiment
Below in conjunction with accompanying drawing explanation embodiments of the invention, but be not limited to following examples:
Utilize acetic acid waste gas alkali to absorb preparation sodium acetate trihydrate and prepare example:
Technological process by Fig. 1 operates, in one-level alkali absorption tower He in secondary alkali absorption tower, add respectively 1000 liters, water, 96% 200 kilograms, sodium hydroxide, be heated to dissolve between 55-60 ℃, pump is beaten circulation absorption Glucuronic acid .gamma.-lactone workshop and is slightly got rid of the acetic acid waste gas that conveying is come, control alkali absorption temperature between 50-60 ℃, with pH test paper, measure pH in one-level alkali absorption tower at any time, when pH value approaches 10, add 96% sodium hydroxide, in one-level alkali absorption tower, add 96% sodium hydroxide total amount accumulative total and reach 400 kilograms, when liquid pH value to be absorbed reaches 8-9, absorption liquid is inputted to crystallization kettle, control-5 ℃ of crystallizations, rejection filter obtains sodium acetate trihydrate.Crystallization filtrate cover is for two-level absorption tower.
In one-level alkali absorption tower, after absorption liquid input crystallization kettle, absorption liquid in secondary alkali absorption tower is proceeded to one-level alkali absorption tower.Crystallization filtrate adds water and absorbs and join alkali solvent as secondary alkali, joins alkali at every turn and adds 200 kilograms, 96% sodium hydroxide and 15 liters of hydrogen peroxide.Carry out as stated above operate continuously successively, circulation absorbs continuous production sodium acetate trihydrate;
The technical data of continuous 5 batches of production sodium acetate trihydrate below:
| Experiment lot number | Sodium hydroxide concentration | Hydrogen peroxide consumption | Sodium acetate trihydrate output | Remarks |
| 01 | 400kg | 0 | 1170kg | Do not overlap mother liquor |
| 02 | 400kg | 0 | 1197 kg | Do not overlap mother liquor |
| 03 | 400kg | 15L | 1301 kg | Apply mechanically mother liquor |
| 04 | 400kg | 15L | 1295 kg | Apply mechanically mother liquor |
| 05 | 400kg | 15L | 1292 kg | Apply mechanically mother liquor |
Shown detailed embodiment of the present invention above, apparent, those skilled in the art, under prerequisite of the present invention, can carry out part modifications and changes; The content of mentioning in description above and accompanying drawing, only as illustrative case, is not limitation of the present invention; The acetic acid waste gas alkali with technical characterictic described herein absorbs the method for preparing sodium acetate, all falls into this patent protection domain.
Claims (5)
1. acetic acid waste gas alkali absorbs a method of preparing sodium acetate, it is characterized in that: it consists of following steps:
1, the acetic acid waste gas producing in chemical industry or pharmaceutical production is inputted to alkali absorption tower by induced draft fan, as the raw material of producing sodium acetate, carry out multistage alkali circulation and absorb, the gas after absorption is emptying;
2, control alkali absorption liquid temperature between 30 to 80 ℃, when pH value≤10, add solid state hydrogen sodium oxide or sodium carbonate;
When 3, cumulative calculation adds the concentration of sodium hydroxide or sodium carbonate to reach 25% to 50%, stop adding alkali, when alkali absorption liquid pH value reaches between 8-to 9, by alkali absorption liquid input crystallization kettle;
4, alkali absorption liquid is cooled to-10 to 30 ℃, centrifugal rejection filter, obtains sodium acetate trihydrate, and sodium acetate trihydrate can direct marketing, also can be through 120 to 150 ℃ of dry anhydrous sodium acetates of preparing;
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 as claimed in claim 1 absorbs the method for preparing sodium acetate, it is characterized in that: the acetic acid waste gas described in step 1, comprise the acetic acid waste gas producing in Glucuronic acid .gamma.-lactone production process, but be not limited to the acetic acid waste gas that produces in Glucuronic acid .gamma.-lactone production process.
3. acetic acid waste gas alkali as claimed in claim 1 absorbs the method for preparing sodium acetate, it is characterized in that: described in step 1, carry out multistage alkali absorption, comprise 1-5 level alkali absorption process.
4. acetic acid waste gas alkali as claimed in claim 1 absorbs the method for preparing sodium acetate, it is characterized in that: the alkali that described absorption acetic acid waste gas is used includes but not limited to sodium hydroxide or sodium carbonate.
5. acetic acid waste gas alkali as claimed in claim 1 absorbs the method for preparing sodium acetate, it is characterized in that: the control alkali absorption liquid temperature described in step 2, between 30---80 ℃, be take and is controlled at 50-65 ℃ as optimum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210355758.8A CN103664573B (en) | 2012-09-24 | 2012-09-24 | Acetic acid waste gas Alkali absorption prepares the method for sodium acetate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210355758.8A CN103664573B (en) | 2012-09-24 | 2012-09-24 | Acetic acid waste gas Alkali absorption prepares the method for sodium acetate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103664573A true CN103664573A (en) | 2014-03-26 |
| CN103664573B CN103664573B (en) | 2016-06-01 |
Family
ID=50303469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210355758.8A Active CN103664573B (en) | 2012-09-24 | 2012-09-24 | Acetic acid waste gas Alkali absorption prepares the method for sodium acetate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103664573B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016110081A1 (en) * | 2015-01-09 | 2016-07-14 | 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 |
| CN108892611A (en) * | 2018-06-27 | 2018-11-27 | 蓝保(厦门)水处理科技有限公司 | A kind of production technology of sodium acetate solution |
| CN111423322A (en) * | 2020-05-12 | 2020-07-17 | 无锡阳山生化有限责任公司 | 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016110081A1 (en) * | 2015-01-09 | 2016-07-14 | 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 |
| CN108892611A (en) * | 2018-06-27 | 2018-11-27 | 蓝保(厦门)水处理科技有限公司 | A kind of production technology of sodium acetate solution |
| CN111423322A (en) * | 2020-05-12 | 2020-07-17 | 无锡阳山生化有限责任公司 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103664573B (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103664573A (en) | Method for preparing sodium acetate from acetic acid waste gas through alkaline absorption | |
| CN108484796B (en) | Preparation process of low-molecular sodium hyaluronate | |
| CN106185995A (en) | Sodium bromide preparation method | |
| CN101671374A (en) | New technique for extracting D-glucosamine hydrochloride | |
| CN102010318A (en) | Method for producing mixed long carbon chain dibasic acid | |
| CN203079884U (en) | Series-connection discoloring device for potassium sorbate | |
| CN106495174A (en) | Attapulgite wet method bisgallic acid activation method | |
| CN112815638A (en) | Method for drying erythromycin thiocyanate fungus residues | |
| CN104211657A (en) | Refining method of rubber vulcanizing accelerant M | |
| CN103613685A (en) | Method for preparing chitin through subcritical hydrolysis of arthropod shells | |
| CN104261468B (en) | A kind of manufacture method of low alkali catalysis titanium white | |
| CN105001287B (en) | The preparation method of AVM | |
| CN109627355A (en) | A kind of method that ionic liquid degradation chitosan prepares Water soluble oligo chitosan | |
| CN204097371U (en) | The production equipment of potassium sorbate | |
| Yan et al. | Microwave-assisted depolymerization of chitin and chitosan extracted from crayfish shells waste: A sustainable approach based on graphene oxide catalysis | |
| CN204917971U (en) | Sour concentrated decoloration equipment of organic sulfur waste | |
| CN104587810B (en) | A kind of method of comprehensive utilization of the chlorination tail gas of itrated compound | |
| CN113372572A (en) | Method for separating lignin by recycling solid organic acid | |
| CN203639166U (en) | Three-section incinerator-based comprehensive industrial waste salt treatment device | |
| CN206288970U (en) | A kind of thio conversion ammonium sulfate process equipment of desulphurization waste liquid of coke oven gas salt extraction | |
| CN105506033A (en) | Preparation method of low-gel-strength agar | |
| CN105381700B (en) | The oxidized tail gas processing system and method for the raw materials used aminobenzoic acid of EHA, EDB | |
| CN104193836A (en) | Production process for medicinal hydroxypropyl starch | |
| CN107417512A (en) | A kind of method of one-step synthesis sodium acetate | |
| CN108772096A (en) | The advanced oxidation processes of lavo-ofloxacin hydrochloride are handled in a kind of heterogeneous reaction system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
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. |