CN103113213A - Preparation method of calcium propionate - Google Patents
Preparation method of calcium propionate Download PDFInfo
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- CN103113213A CN103113213A CN 201210451303 CN201210451303A CN103113213A CN 103113213 A CN103113213 A CN 103113213A CN 201210451303 CN201210451303 CN 201210451303 CN 201210451303 A CN201210451303 A CN 201210451303A CN 103113213 A CN103113213 A CN 103113213A
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- calcium
- calcium hydroxide
- calcium propionate
- mixed adsorbent
- purity
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Abstract
The invention aims at providing a preparation method of calcium propionate. The preparation method comprises the following steps of: reacting calcium hydroxide with metacetonic acid, controlling reaction pH value in the range from 6.5 to7.0 to remove alkali residue in a product, removing excessive acid in a drying process, adsorbing the filtrate after filtration through a mixed adsorbent to remove impurity caused by the metacetonic acid and the calcium hydroxide, and obtaining a calcium propionate product by spraying drying, wherein whiteness purity of the calcium propionate product is greater than 99%.
Description
Technical field
A kind of method of calcium propionate preparation belongs to technical field of food additives.
Technical background
Calcium propionate has the effect of killing mould, aerobic property genus bacillus, Gram-negative bacteria, it not only can extend the freshness date of food and feed, but also can be absorbed by people, animal by metabolism, essential calcium is provided, be widely used as the anticorrosion of food and feed.At present the preparation technology of calcium propionate mainly adopts propionic acid and calcium hydroxide or calcium carbonate or calcium oxide reaction to make.Calcium carbonate is as the calcium source, and product purity is high, but reaction the time is emitted carbon dioxide, can take away unreacted propionic acid, causes yield to descend.During calcium hydroxide or calcium oxide reaction preparation calcium propionate, be will reaction pH regulator to 8-9, then adopt and boil the method for enduring and dewater, fish for crystallization.The shortcoming of the method is that to endure technique unstable owing to boiling, and easily causes the calcium propionate reaction of Carbon Dioxide in Air and generation to produce dirt calcium carbonate impurity, and simultaneously because crystal will constantly be pulled out, labour intensity is large.When calcium hydroxide or calcium oxide reaction preparation calcium propionate is also arranged, the pH regulator of reaction to 8-9, is then adopted spray-dired method, the method easily causes alkali number to exceed standard.
Summary of the invention
The object of the present invention is to provide a kind of method of calcium propionate preparation.Adopt calcium hydroxide and propionic acid reaction, control pH value in reaction 6.5-7.0, eliminating the residual of alkali in product, remove during excessive acid drying.After filtering, filtrate is adsorbed by mixed adsorbent, and removing the impurity that is brought by propionic acid and calcium hydroxide, the spray-dried purity that obtains brilliant white is greater than 99% calcium propionate product.
Technical scheme of the present invention: a kind of method of calcium propionate preparation is: calcium hydroxide is added to the water, and slowly adds propionic acid, controls pH value in reaction 6.5-7.0, filter, filtrate is adsorbed by mixed adsorbent, filters, and the purity that filtrate is spray-dried obtains brilliant white is greater than 99% calcium propionate product.
(1) raw material: calcium hydroxide purity is greater than 90%, and propionic acid purity is greater than 98%;
(2) mass concentration of calcium hydroxide and water can be at 5%-15%;
(3) propionic acid is regulated aqua calcis pH6.5-7.0;
(4) mixed adsorbent adopts activated carbon and diatomite, and gac and diatomaceous mass ratio can be 1-3, and the mixed adsorbent addition is the 1-3% of calcium hydroxide;
(5) filter the employing millipore filtration, its filter opening diameter is less than 100 microns.
Beneficial effect of the present invention: a kind of method of calcium propionate preparation, be preparation high purity calcium propionate, realize serialization production, constant product quality provides a kind of feasible method, uses the method can prepare easily the high purity calcium propionate product that has extensive use at foodstuffs industry, fodder industry.
Table 1: the method products obtained therefrom index
Embodiment
Embodiment 1
1 kilogram of calcium hydroxide is added 9.8 kg of water, with the third acid for adjusting pH to 6.9, filter under stirring.Add gac 10 grams and diatomite 10 grams in filtrate, whip attachment 10 minutes, millipore filtration, the filtrate spraying drying gets the product of purity 99.6%.
Embodiment 2
1 kilogram of calcium hydroxide is added 14 kg of water, with the third acid for adjusting pH to 6.9, filter under stirring.Add gac 10 grams and diatomite 10 grams in filtrate, whip attachment 10 minutes, millipore filtration, the filtrate spraying drying gets the product of purity 99.2%.
Embodiment 3
1 kilogram of calcium hydroxide is added 9.8 kg of water, with the third acid for adjusting pH to 6.9, filter under stirring.Add gac 20 grams and diatomite 10 grams in filtrate, whip attachment 10 minutes, millipore filtration, the filtrate spraying drying gets the product of purity 99.8%.
Claims (4)
1. the method for calcium propionate preparation, is characterized in that adopting the reaction of calcium hydroxide and propionic acid, controls pH value in reaction 6.5-7.0, eliminating the residual of alkali in product, removes during excessive acid drying.After filtering, filtrate is adsorbed by mixed adsorbent, and removing the impurity that is brought by propionic acid and calcium hydroxide, the spray-dried purity that obtains brilliant white is greater than 99% calcium propionate product.
(1) raw material: calcium hydroxide purity is greater than 90%, and propionic acid purity is greater than 98%;
(2) mass concentration of calcium hydroxide and water can be at 5%-15%;
(3) propionic acid is regulated aqua calcis pH6.5-7.0;
(4) mixed adsorbent adopts activated carbon and diatomite, and gac and diatomaceous mass ratio can be 1-3, and the mixed adsorbent addition is the 1-3% of calcium hydroxide;
(5) filter the employing millipore filtration, its filter opening diameter is less than 100 microns.
2. the method for a kind of calcium propionate preparation according to claim 1, is characterized in that adopting mixed adsorbent to prepare high purity calcium propionate product.
3. the method for a kind of calcium propionate preparation according to claim 1, is characterized in that mixed adsorbent is gac and diatomaceous mixture, and gac and diatomaceous mass ratio can be 1-3, and the mixed adsorbent addition is the 1-3% of calcium hydroxide.
4. the method for a kind of calcium propionate preparation according to claim 1, is characterized in that filtering and adopted millipore filtration, and its filter opening diameter is less than 100 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210451303 CN103113213A (en) | 2012-11-10 | 2012-11-10 | Preparation method of calcium propionate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210451303 CN103113213A (en) | 2012-11-10 | 2012-11-10 | Preparation method of calcium propionate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103113213A true CN103113213A (en) | 2013-05-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210451303 Pending CN103113213A (en) | 2012-11-10 | 2012-11-10 | Preparation method of calcium propionate |
Country Status (1)
| Country | Link |
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| CN (1) | CN103113213A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709026A (en) * | 2014-01-13 | 2014-04-09 | 南通奥凯生物技术开发有限公司 | Method for preparing calcium propionate |
| CN104496790A (en) * | 2014-12-30 | 2015-04-08 | 南通奥凯生物技术开发有限公司 | Filtering and crystallizing device for high-purity calcium propionate and use method of filtering and crystallizing device |
| CN112176005A (en) * | 2020-10-27 | 2021-01-05 | 清远一生自然生物研究院有限公司 | Production method of calcium propionate |
-
2012
- 2012-11-10 CN CN 201210451303 patent/CN103113213A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103709026A (en) * | 2014-01-13 | 2014-04-09 | 南通奥凯生物技术开发有限公司 | Method for preparing calcium propionate |
| CN104496790A (en) * | 2014-12-30 | 2015-04-08 | 南通奥凯生物技术开发有限公司 | Filtering and crystallizing device for high-purity calcium propionate and use method of filtering and crystallizing device |
| CN112176005A (en) * | 2020-10-27 | 2021-01-05 | 清远一生自然生物研究院有限公司 | Production method of calcium propionate |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130522 |