CN1221727A - Prepn. tech. of zinc acetate - Google Patents

Prepn. tech. of zinc acetate Download PDF

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Publication number
CN1221727A
CN1221727A CN 97119831 CN97119831A CN1221727A CN 1221727 A CN1221727 A CN 1221727A CN 97119831 CN97119831 CN 97119831 CN 97119831 A CN97119831 A CN 97119831A CN 1221727 A CN1221727 A CN 1221727A
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China
Prior art keywords
zinc acetate
water
mother liquor
zinc
crystallization
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CN 97119831
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Chinese (zh)
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CN1059196C (en
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徐同香
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徐同香
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Abstract

A process for preparing zinc acetate uses zinc oxide, glacial acetic acid, water and mother liquid of zinc acetate as raw materials and includes high-temp heating under the existance of catalyst, filter, concentration, crystallization and dewatering. Its advantages are high feasibility, high transform rate of zinc acetate, simple process, recovery of mother liquid for full utilization, closed-loop circulation, and no environmental pollution.

Description

Preparation process of zinc acetate
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 industry of 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 mordant, woodland preservative, enamel, printing and dyeing, electroplating and other industries.
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 ratio of 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 (H)2O2) And the addition amount is 0.01-0.02 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.
CN97119831A 1997-12-30 1997-12-30 Prepn. tech. of zinc acetate Expired - Fee Related CN1059196C (en)

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)

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CN1221727A true CN1221727A (en) 1999-07-07
CN1059196C CN1059196C (en) 2000-12-06

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CN97119831A Expired - Fee Related CN1059196C (en) 1997-12-30 1997-12-30 Prepn. tech. of zinc acetate

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Cited By (6)

* Cited by examiner, † Cited by third party
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
CN104649889A (en) * 2015-02-09 2015-05-27 吉林市弗兰达科技股份有限公司 Acetic acid raw material for producing metal acetate as well as preparation method and special equipment thereof
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
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
CN113620800A (en) * 2021-08-20 2021-11-09 三门核电有限公司 Preparation process of depleted anhydrous zinc acetate

Families Citing this family (3)

* Cited by examiner, † Cited by third party
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
CN102417446B (en) * 2011-10-31 2014-04-30 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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS575318B2 (en) * 1976-09-02 1982-01-29

Cited By (6)

* Cited by examiner, † Cited by third party
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
CN104649889A (en) * 2015-02-09 2015-05-27 吉林市弗兰达科技股份有限公司 Acetic acid raw material for producing metal acetate as well as preparation method and special equipment thereof
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
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
CN113620800A (en) * 2021-08-20 2021-11-09 三门核电有限公司 Preparation process of depleted anhydrous zinc acetate

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