CN1059196C - Prepn. tech. of zinc acetate - Google Patents
Prepn. tech. of zinc acetate Download PDFInfo
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- CN1059196C CN1059196C CN97119831A CN97119831A CN1059196C CN 1059196 C CN1059196 C CN 1059196C CN 97119831 A CN97119831 A CN 97119831A CN 97119831 A CN97119831 A CN 97119831A CN 1059196 C CN1059196 C CN 1059196C
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- zinc acetate
- mother liquor
- water
- zinc
- crystallization
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Abstract
The present invention belongs to the field of inorganic chemical industry, which relates to a preparation process of zinc acetate. The present invention adopts the raw materials of zinc oxide, glacial acetic acid, water and the mother liquor of the zinc acetate, the raw materials are heated at high temperature in the existence of a catalyst, and the zinc acetate is prepared by filtration concentration, crystallization and dehydration. The present invention has the advantages of feasible principle reference, high conversion rate of the zinc acetate, simple equipment and short technological process; in addition, the mother liquor is recovered, so raw materials can be fully utilized; a closed cycle is formed, and no waste gas, waste water or waste slag is exhausted so environment is not polluted.
Description
The invention belongs to the field of inorganic chemical industry, and relates to a preparation process of zinc acetate.
Zinc acetate is an important chemical raw material and is widely applied to various industries. Can be used as a special catalyst in the industryof producing the vinyl acetate and the vinylon, and is also an important raw material for manufacturing the zinc salt. In addition, the paint is widely used in industries such as mordant, wood preservative, enamel, printing and dyeing, electroplating and the like.
The invention aims to provide a zinc acetate preparation process which has feasible principle, high conversion rate, short process flow, no discharge of three wastes in the production process and no pollution to the environment.
The object of the invention can be achieved by the following measures:
a process for preparing zinc acetate from glacial acetic acid, zinc oxide and water includes high-temp heating, concentrating, crystallizing and dewatering in the presence of catalyst
Mixing zinc oxide, glacial acetic acid, water and zinc acetate mother liquor according to the weight ratio of 1: 1.2-1.8: 2-5, heating and stirring uniformly, adding a catalyst, heating to raise the temperature to 95-97 ℃, stirring at constant temperature for 30-40 minutes to obtain the Baume degree of 32-38, filtering the precipitate, concentrating the liquid material, then putting the liquid material into a crystallization tank for crystallization, and recovering the zinc acetate mother liquor; dehydrating the crystal at a high temperature of more than 100 ℃, and recovering zinc acetate mother liquor to obtain a product zinc acetate.
The object of the invention is also achieved by the following measures:
in the preparation process of the zinc acetate, the added catalyst is hydrogen peroxide, and the adding amount of the hydrogen peroxide is 0.01 to 0.02 time of the weight of the zinc oxide; wherein the water and the zinc acetate mother liquor can be replaced by water, and the weight ratio of the water and the zinc acetate mother liquor is unchanged.
Compared with the prior art, the invention has the following advantages:
the method is feasible according to the principle, the conversion rate of the zinc acetate is higher, the equipment is simple, the preparation process flow is short, the closed cycle is adopted, the raw materials are fully utilized, and no waste gas, waste water or waste residue is discharged in the process, so the method does not pollute the environment.
The attached drawing is a process flow schematic diagram of the invention:
the invention will be further described in detail with reference to the following embodiments:
the first embodiment is as follows:
mixing zinc oxide, glacial acetic acid, water and zinc acetate mother liquor according to the weight ratio of 1: 1.4: 3, heating by steam, stirring uniformly, adding hydrogen peroxide with the weight of 0.01 times that of the zinc oxide, heating to raise the temperature to 95 ℃, stirring at constant temperature for 32 minutes to obtain the Baume degree of 35, filtering the precipitate, concentrating the liquid material, then putting into a crystallization tank for crystallization, and recovering the zinc acetate mother liquor; dehydrating the obtained crystal at a high temperature of 105 ℃, and recovering the zinc acetate mother liquor to obtain the zinc acetate.
Example two:
mixing zinc oxide, glacial acetic acid, water and zinc acetate mother liquor according to the weight ratioof 1: 1.8: 4.5, heating by steam, uniformly stirring, adding hydrogen peroxide, wherein the weight of hydrogen peroxide is 0.012 times of that of zinc oxide, heating to 97 ℃, stirring at constant temperature for 40 minutes until the Baume degree is 38, filtering the precipitate, concentrating the liquid material, then putting into a crystallization tank for crystallization, and recovering the zinc acetate mother liquor; dehydrating the obtained crystal at 120 ℃, and recovering zinc acetate mother liquor to obtain the zinc acetate.
Example three:
mixing zinc oxide, glacial acetic acid, water and zinc acetate mother liquor according to the weight ratio of 1: 1.6: 4, heating by steam, stirring uniformly, adding hydrogen peroxide with the weight of 0.014 times that of the zinc oxide, heating to raise the temperature to 96 ℃, stirring at constant temperature for 38 minutes to obtain the Baume degree of 36, filtering the precipitate, concentrating the liquid material, then putting into a crystallization tank for crystallization, and recovering the zinc acetate mother liquor; dehydrating the obtained crystal at a high temperature of 110 ℃, and recovering the zinc acetate mother liquor to obtain the zinc acetate.
Example four:
mixing zinc oxide, glacial acetic acid, water and zinc acetate mother liquor according to the weight ratio of 1: 1.7: 5, heating by steam, stirring uniformly, adding hydrogen peroxide with the weight of 0.016 times of that of the zinc oxide, heating to 97 ℃, stirring at constant temperature for 35 minutes until the Baume degree is 34, filtering the precipitate, concentrating the liquid material, then putting into a crystallization tank for crystallization, and recovering the zinc acetate mother liquor; dehydrating the obtained crystal at 125 ℃, and recovering the zinc acetate mother liquor to obtain the zinc acetate.
Example five:
mixing zinc oxide, glacial acetic acid, water and zinc acetate mother liquor according to the weight ratio of 1: 1.5: 3.5, heating by steam, uniformly stirring, adding hydrogen peroxide, wherein the weight of hydrogen peroxide is 0.018 times of that of zinc oxide, heating to raise the temperature to 95 ℃, stirring at constant temperature for 30 minutes to obtain the Baume degree of 32, filtering the precipitate, concentrating the liquid material, then putting the liquid material into a crystallization tank for crystallization, and recovering the zinc acetate mother liquor; dehydrating the obtained crystal at the high temperature of 115 ℃, and recovering the zinc acetate mother liquor to obtain the zinc acetate.
Example six:
mixing zinc oxide, glacial acetic acid and water according to the weight ratio of 1: 1.2: 2.5, heating by steam, uniformly stirring, adding hydrogen peroxide, heating to raise the temperature to 96 ℃, stirring at constant temperature for 37 minutes to obtain the Baume degree of 33, filtering the precipitate, concentrating the liquid material, then putting the concentrated liquid material into a crystallization tank for crystallization, and recovering the zinc acetate mother liquor; dehydrating the obtained crystal at 130 ℃, and recovering zinc acetate mother liquor to obtain the zinc acetate.
Claims (3)
1. A zinc acetate preparation process is characterized in that zinc oxide, glacial acetic acid, water and zinc acetate mother liquor are mixed according to the weight ratio of 1: 1.2-1.8: 2-5, then are heated and stirred uniformly, then are added with a catalyst, are heated to raise the temperature to 95-97 ℃, are stirred for 30-40 minutes at constant temperature, measure Baume degree to be 32-38, then are filtered,concentrated, then are put into a crystallization tank for crystallization, and are recycled; dehydrating the obtained crystal at a high temperature of more than 100 ℃, and recovering zinc acetate mother liquor to obtain a product zinc acetate.
2. The process for preparing zinc acetate according to claim 1, wherein the catalyst is hydrogen peroxide, and the amount of the catalyst added is 0.01 to 0.02 times of the weight of the zinc oxide.
3. The process for preparing zinc acetate according to claim 1, wherein the water and the mother liquid of zinc acetate in the raw materials can be replaced by water, and the weight ratio of the water and the mother liquid of zinc acetate is unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119831A CN1059196C (en) | 1997-12-30 | 1997-12-30 | Prepn. tech. of zinc acetate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97119831A CN1059196C (en) | 1997-12-30 | 1997-12-30 | Prepn. tech. of zinc acetate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1221727A CN1221727A (en) | 1999-07-07 |
| CN1059196C true CN1059196C (en) | 2000-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97119831A Expired - Fee Related CN1059196C (en) | 1997-12-30 | 1997-12-30 | Prepn. tech. of zinc acetate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1059196C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383297C (en) * | 2005-03-30 | 2008-04-23 | 宁波大学 | Nonlinear optical crystal and preparation method thereof |
| CN102417446A (en) * | 2011-10-31 | 2012-04-18 | 广西亿康药业股份有限公司 | Production method for zinc undecylenate |
| CN103360233A (en) * | 2012-03-28 | 2013-10-23 | 宜兴新威利成稀土有限公司 | Method for converting neodymium oxide into neodymium acetate crystal |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103113212A (en) * | 2013-03-13 | 2013-05-22 | 南通市纳百园化工有限公司 | Method for preparing industrial zinc acetate through zinc acetate residues and application thereof |
| CN104557506A (en) * | 2014-12-08 | 2015-04-29 | 长沙罗斯科技有限公司 | Preparation technology of stannous acetate |
| CN104649889B (en) * | 2015-02-09 | 2016-09-21 | 郑景宜 | Acetic acid raw material producing metal acetate salt and preparation method thereof and special equipment |
| CN113559811A (en) * | 2021-08-20 | 2021-10-29 | 核工业理化工程研究院 | Experimental device for anhydrous zinc acetate preparation and aftertreatment |
| CN113620800B (en) * | 2021-08-20 | 2022-12-13 | 三门核电有限公司 | Preparation process of depleted anhydrous zinc acetate |
| CN113563177A (en) * | 2021-08-20 | 2021-10-29 | 核工业理化工程研究院 | Preparation process of depleted anhydrous zinc acetate |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5331096A (en) * | 1976-09-02 | 1978-03-23 | Toshiba Corp | Liquid level control device in secondary cooling system device of fast breeder |
-
1997
- 1997-12-30 CN CN97119831A patent/CN1059196C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5331096A (en) * | 1976-09-02 | 1978-03-23 | Toshiba Corp | Liquid level control device in secondary cooling system device of fast breeder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100383297C (en) * | 2005-03-30 | 2008-04-23 | 宁波大学 | Nonlinear optical crystal and preparation method thereof |
| CN102417446A (en) * | 2011-10-31 | 2012-04-18 | 广西亿康药业股份有限公司 | Production method for zinc undecylenate |
| CN103360233A (en) * | 2012-03-28 | 2013-10-23 | 宜兴新威利成稀土有限公司 | Method for converting neodymium oxide into neodymium acetate crystal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1221727A (en) | 1999-07-07 |
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