CN109503359A - A kind of industrial production process of sodium acetate solution - Google Patents
A kind of industrial production process of sodium acetate solution Download PDFInfo
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- CN109503359A CN109503359A CN201910053439.3A CN201910053439A CN109503359A CN 109503359 A CN109503359 A CN 109503359A CN 201910053439 A CN201910053439 A CN 201910053439A CN 109503359 A CN109503359 A CN 109503359A
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- sodium acetate
- acetate solution
- production process
- industrial production
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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
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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
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
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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
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/47—Separation; Purification; Stabilisation; Use of additives by solid-liquid treatment; by chemisorption
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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
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
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- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of industrial production process of sodium acetate solution, beneficial effects of the present invention are as follows: this method is simple and environmentally-friendly, safety and production efficiency are higher, sodium acetate purity is high obtained, anti- wear rate is high, reaction speed is fast and environmental protection, no substandard goods generate, and raw material availability is high.
Description
Technical field
The present invention relates to grain processing field, specially a kind of industrial production process of sodium acetate solution.
Background technique
Sodium acetate, also known as sodium acetate, anhydrous sodium acetate molecular formula CH3COONa, write a Chinese character in simplified form NaAc, are the crystallization of colorless and odorless
Body, it is nontoxic, there is hygroscopicity, is exposed in humid air and easily deliquesces, the easy-weathering in dry air, white powder after weathering,
It is flammable.Sodium acetate trihydrate is soluble easily in water and ether, is slightly soluble in ethyl alcohol.Aqueous solution is in alkalescent.The density of Sodium acetate trihydrate is
1450kg/m3,58 DEG C of fusing point .2 DEG C of self-ignition point 607 sloughs 3 molecular waters when 123 DEG C.The density of anhydrous sodium acetate is
1528kg/m3,324 DEG C of fusing point.Sodium acetate be used as organic synthesis esterifying agent and photography, drug, medicine, printing and dyeing mordant,
The various aspects such as buffer, chemical reagent, meat anticorrosion, pigment, tanning.It can be used for producing various chemical products, such as furans propylene
Acid, acetate and monoxone etc..Buffer of the product as seasoning can mitigate bad smell and prevent from changing colour, and have certain
Mildew-proof function.Also it can be used as the acid of sauce, sauerkraut, mayonnaise, breaded fish stick, sausage, bread, viscous cake etc..With methyl fibre
The mixing such as element, phosphate is tieed up, for improving the keeping quality of sausage, bread, viscous cake etc.；With certain market potential.
The production of current sodium acetate in the industry mainly using glacial acetic acid and sodium hydroxide as main raw material(s), passes through concentration
Crystallization is centrifugated and is made, and method production is at high cost, and production technology complexity is not easy to operate, and consumes a large amount of mineral products
Resource and acetic acid resource.
Summary of the invention
The purpose of the present invention is to provide a kind of industrial production process of sodium acetate solution, solve in background technique and are mentioned
Out the problem of.
To achieve the above object, the invention provides the following technical scheme: a kind of industrial production process of sodium acetate solution, packet
Include following steps:
S1: stock, the acetic acid solution of concentration 96%-97%, the ethanol solution of concentration 55%-65%, concentration 30%-35% sodium hydroxide
Solution, methanol and water；
S2: proportion, acetic acid solution, ethanol solution, sodium hydroxide solution, methanol and water proportion be 1:1:1:1:4；
S3: neutralizing, and sodium hydroxide solution is first added in water, adds acetic acid solution, stirring while adding, until PH is 7；
S4: ethanol solution is added in alcoholization, and continues stirring and obtain sodium acetate solution in 10-15 minutes；
S5: sodium acetate solution obtained in S4 is concentrated under reduced pressure into 20% or more concentration by concentration；
S6: methanol is poured into sodium acetate solution and is stirred continuously 10 minutes or more by reduction.
As a kind of preferred embodiment of the invention, sodium acetate solution obtained in S5 is relatively close at 20~25 DEG C
Degree is 1.12~1.18g/mL, and pH value 9~10.5, the mass fraction < 0.05% of impurity, COD are greater than 200,000.
As a kind of preferred embodiment of the invention, S3 is neutralized and S4 alcoholization carries out in a kettle.
As a kind of preferred embodiment of the invention, in S3 and when reactor temperature be heated to 60-80 degrees Celsius, pressure
Power is 0.12-0.15MPa.
As a kind of preferred embodiment of the invention, reactor temperature is 40-45 degrees Celsius when S4 refines, and pressure is
0.2-0.25MPa。
As a kind of preferred embodiment of the invention, using being concentrated under reduced pressure when S5 is concentrated, pressure is 0.03- when concentration
0.06MPa。
As a kind of preferred embodiment of the invention, filters pressing is carried out after S5 concentration, is equipped with three layer filtration in pressure-filtering process
Layer, is followed successively by activated carbon filter layer, polyurethanes ultrafiltration membrance filter layer, ceramic membrane filter layer.
As a kind of preferred embodiment of the invention, ceramic membrane filter layer uses nanometer scale ceramics filter membrane.
As a kind of preferred embodiment of the invention, in S3 and when be added catalyst, catalyst is hydroxylation catalyst.
Compared with prior art, beneficial effects of the present invention are as follows: this method is simple and environmentally-friendly, safety and production efficiency compared with
Height, sodium acetate purity is high obtained, anti-wear rate is high, and reaction speed is fast and environmental protection, no substandard goods generate, and raw material availability is high.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
The present invention provides a kind of technical solution: a kind of industrial production process of sodium acetate solution, comprising the following steps:
S1: stock, the acetic acid solution of concentration 96%-97%, the ethanol solution of concentration 55%-65%, concentration 30%-35% sodium hydroxide
Solution, methanol and water；
S2: proportion, acetic acid solution, ethanol solution, sodium hydroxide solution, methanol and water proportion be 1:1:1:1:4；
S3: neutralizing, and sodium hydroxide solution is first added in water, adds acetic acid solution, stirring while adding, until PH is 7；
S4: ethanol solution is added in alcoholization, and continues stirring and obtain sodium acetate solution in 10-15 minutes；
S5: sodium acetate solution obtained in S4 is concentrated under reduced pressure into 20% or more concentration by concentration；
S6: methanol is poured into sodium acetate solution and is stirred continuously 10 minutes or more by reduction.
Relative density of the sodium acetate solution obtained in S5 at 20~25 DEG C be 1.12~1.18g/mL, pH value 9~
10.5, the mass fraction < 0.05% of impurity, COD are greater than 200,000.
S3 neutralize and S4 alcoholization carries out in a kettle, in S3 and when reactor temperature be heated to 60-80 degrees Celsius,
Pressure is 0.12-0.15MPa, and reactor temperature is 40-45 degrees Celsius when S4 refines, pressure 0.2-0.25MPa, S5 concentration
Shi Caiyong is concentrated under reduced pressure, and pressure is 0.03-0.06MPa when concentration.
Filters pressing is carried out after S5 concentration, is equipped with three layer filtration layer in pressure-filtering process, is followed successively by activated carbon filter layer, polyurethanes
Ultrafiltration membrance filter layer, ceramic membrane filter layer, ceramic membrane filter layer use nanometer scale ceramics filter membrane, when being filtered, active carbon
Layer filtering large granular impurity, polyurethanes ultrafiltration membrance filter layer and ceramic membrane filter layer under the effect of external force, small-molecule substance
Through film, macromolecular substances are rejected by, to achieve the purpose that separation, concentration, impurity elimination.
In S3 and when be added catalyst, catalyst is hydroxylation catalyst, improves reaction speed.
Beneficial effects of the present invention are as follows: this method is simple and environmentally-friendly, safety and production efficiency are higher, sodium acetate obtained
Purity is high, anti-wear rate is high, and reaction speed is fast and environmental protection, no substandard goods generate, and raw material availability is high.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from spirit of the invention or
In the case where essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention
It is interior.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of industrial production process of sodium acetate solution, which comprises the following steps:
S1: stock, the acetic acid solution of concentration 96%-97%, the ethanol solution of concentration 55%-65%, concentration 30%-35% sodium hydroxide
Solution, methanol and water；
S2: proportion, acetic acid solution, ethanol solution, sodium hydroxide solution, methanol and water proportion be 1:1:1:1:4；
S3: neutralizing, and sodium hydroxide solution is first added in water, adds acetic acid solution, stirring while adding, until PH is 7；
S4: ethanol solution is added in alcoholization, and continues stirring and obtain sodium acetate solution in 10-15 minutes；
S5: sodium acetate solution obtained in S4 is concentrated under reduced pressure into 20% or more concentration by concentration；
S6: methanol is poured into sodium acetate solution and is stirred continuously 10 minutes or more by reduction.
2. a kind of industrial production process of sodium acetate solution according to claim 1, it is characterised in that: in the S5
Relative density of the sodium acetate solution arrived at 20~25 DEG C is 1.12~1.18g/mL, pH value 9~10.5, the quality of impurity
Score < 0.05%, COD are greater than 200,000.
3. a kind of industrial production process of sodium acetate solution according to claim 1, it is characterised in that: the S3 neutralize and
S4 alcoholization carries out in a kettle.
4. a kind of industrial production process of sodium acetate solution according to claim 3, it is characterised in that: the S3 is neutralized
When reactor temperature be heated to 60-80 degrees Celsius, pressure 0.12-0.15MPa.
5. a kind of industrial production process of sodium acetate solution according to claim 3, it is characterised in that: the S4 alcoholization
When reactor temperature be 40-45 degrees Celsius, pressure 0.2-0.25MPa.
6. a kind of industrial production process of sodium acetate solution according to claim 1, it is characterised in that: when the S5 is concentrated
Using reduced pressure, pressure is 0.03-0.06MPa when concentration.
7. a kind of industrial production process of sodium acetate solution according to claim 1, it is characterised in that: after the S5 concentration
Filters pressing is carried out, is equipped with three layer filtration layer in pressure-filtering process, is followed successively by activated carbon filter layer, polyurethanes ultrafiltration membrance filter layer, pottery
Porcelain film filter layer.
8. a kind of industrial production process of sodium acetate solution according to claim 7, it is characterised in that: the ceramic membrane mistake
Filtering layer uses nanometer scale ceramics filter membrane.
9. a kind of industrial production process of sodium acetate solution according to claim 1, it is characterised in that: in the S3 and when
Catalyst is added, the catalyst is hydroxylation catalyst.
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| CN201910053439.3A CN109503359A (en) | 2019-01-21 | 2019-01-21 | A kind of industrial production process of sodium acetate solution |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423192A (en) * | 2019-08-14 | 2019-11-08 | 郑州中科新兴产业技术研究院 | A kind of recovery method of spandex DMAC/ acetic acid organic liquid waste |
| CN112174804A (en) * | 2020-10-27 | 2021-01-05 | 苏州凯乐希生态环境科技有限公司 | Industrial preparation method of sodium acetate solution for sewage treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320090A (en) * | 1992-05-19 | 1993-12-03 | Oogaki Kasei Kogyo Kk | Production of anhydrous sodium acetate improved in quality |
| CN106349052A (en) * | 2016-08-04 | 2017-01-25 | 南通奥凯生物技术开发有限公司 | Sodium acetate preparation method |
| CN106365980A (en) * | 2016-08-28 | 2017-02-01 | 无锡阳山生化有限责任公司 | Method for preparing 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 |
-
2019
- 2019-01-21 CN CN201910053439.3A patent/CN109503359A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320090A (en) * | 1992-05-19 | 1993-12-03 | Oogaki Kasei Kogyo Kk | Production of anhydrous sodium acetate improved in quality |
| CN106349052A (en) * | 2016-08-04 | 2017-01-25 | 南通奥凯生物技术开发有限公司 | Sodium acetate preparation method |
| CN106365980A (en) * | 2016-08-28 | 2017-02-01 | 无锡阳山生化有限责任公司 | Method for preparing 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 |
Non-Patent Citations (2)
| Title |
|---|
| 汪志杰: "PVA醇解废液生产醋酸钠及其在甲醇水溶液中溶解度", 大众科技, vol. 22, no. 10, pages 29 - 31 * |
| 王寿武: "洗涤方式对无水醋酸钠生产过程的影响", 当代化工, vol. 40, no. 09, pages 896 - 898 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110423192A (en) * | 2019-08-14 | 2019-11-08 | 郑州中科新兴产业技术研究院 | A kind of recovery method of spandex DMAC/ acetic acid organic liquid waste |
| CN112174804A (en) * | 2020-10-27 | 2021-01-05 | 苏州凯乐希生态环境科技有限公司 | Industrial preparation method of sodium acetate solution for sewage treatment |
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