CN101683987A - Method for producing food grade potassium chloride - Google Patents
Method for producing food grade potassium chloride Download PDFInfo
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- CN101683987A CN101683987A CN200810151827A CN200810151827A CN101683987A CN 101683987 A CN101683987 A CN 101683987A CN 200810151827 A CN200810151827 A CN 200810151827A CN 200810151827 A CN200810151827 A CN 200810151827A CN 101683987 A CN101683987 A CN 101683987A
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- potassium chloride
- grade potassium
- repone
- food grade
- food
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Abstract
The invention designs a method for producing food grade potassium chloride, which comprises the following steps: taking 100g of potassium chloride with the purity below 98%, putting into water, heating after mixing, dissolving to obtain a potassium chloride supersaturated solution; after filtering, cooling and crystallizing at the temperature of -8 to -6 DEG C; and then, centrifugally separating to obtain potassium chloride crystals and mother liquid, drying the potassium chloride crystals to obtain the food grade potassium chloride. The invention has the following advantages of high recoveryrate, no pollution and production cost reduction.
Description
Technical field
The present invention designs a kind of production method of food-grade potassium chloride
Background technology
Food-grade potassium chloride is the important source material of medicine and foodstuff additive, the content requirement of its Repone K reaches more than 99%, market needs demand gap bigger, the most of manufacturing enterprise of China continues to use traditional thermosol cold crystallization technology always at present, the heat energy consumption of this explained hereafter Repone K is big, equipment corrosion is serious, needs import equipment, so the cost height of product.Old production method can not adapt to the international and domestic market new situations, can not satisfy output and the specification of quality of market to food-grade potassium chloride simultaneously.
The production principle of food-grade potassium chloride is that the Repone K that purity is lower adds water mixing post-heating dissolving and obtains carrying out crystallisation by cooling behind the Repone K supersaturated solution, carry out centrifugation again, obtain potassium chloride and mother liquor, again the potassium chloride oven dry is obtained the food-grade potassium chloride product.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of food-grade potassium chloride production method is provided.
Technical scheme of the present invention is: a kind of production technique of food-grade potassium chloride, get purity and be Repone K 100 grams below 98%, add the dissolving of water mixing post-heating and obtain the Repone K supersaturated solution, again after filtering, carrying out temperature is-8 ℃～-6 ℃ crystallisation by cooling, carry out centrifugation again, obtain potassium chloride and mother liquor, the potassium chloride oven dry is obtained food-grade potassium chloride.
The present invention has the following advantages: pollution-free, rate of recovery height has reduced product cost.
Specific embodiment
Embodiment: a kind of production technique of food-grade potassium chloride, get purity and be Repone K 100 grams below 98%, add the dissolving of water mixing post-heating and obtain the Repone K supersaturated solution, again after filtering, carrying out temperature is-8 ℃～-6 ℃ crystallisation by cooling, carry out centrifugation again, obtain potassium chloride and mother liquor, again the potassium chloride oven dry is obtained the food-grade potassium chloride product.
Claims (1)
1, a kind of production method of food-grade potassium chloride is characterized in that by following step process:
(1) purity is Repone K 100 grams below 98%, puts into the dissolving of water mixing post-heating and obtains the Repone K supersaturated solution;
(2) the Repone K supersaturated solution that obtains is filtered decon;
(3) carrying out temperature then is-8 ℃～-6 ℃ crystallisation by cooling;
(4) carry out centrifugation again, obtain potassium chloride and mother liquor;
(5) the potassium chloride oven dry is obtained food-grade potassium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810151827A CN101683987A (en) | 2008-09-26 | 2008-09-26 | Method for producing food grade potassium chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810151827A CN101683987A (en) | 2008-09-26 | 2008-09-26 | Method for producing food grade potassium chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101683987A true CN101683987A (en) | 2010-03-31 |
Family
ID=42047412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810151827A Pending CN101683987A (en) | 2008-09-26 | 2008-09-26 | Method for producing food grade potassium chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101683987A (en) |
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2008
- 2008-09-26 CN CN200810151827A patent/CN101683987A/en active Pending
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Legal Events
| Date | Code | Title | Description |
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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 |
Open date: 20100331 |