CN101659427A - Process for producing food-grade potassium chloride - Google Patents
Process for producing food-grade potassium chloride Download PDFInfo
- Publication number
- CN101659427A CN101659427A CN200810054285A CN200810054285A CN101659427A CN 101659427 A CN101659427 A CN 101659427A CN 200810054285 A CN200810054285 A CN 200810054285A CN 200810054285 A CN200810054285 A CN 200810054285A CN 101659427 A CN101659427 A CN 101659427A
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- China
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- potassium chloride
- food
- grade potassium
- grade
- repone
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Abstract
The invention discloses a process for producing food-grade potassium chloride. The process comprises the following steps: taking 50 grams of potassium chloride with a purity below 98 percent; mixing the potassium chloride with water; heating and dissolving the mixture to obtain oversaturated potassium chloride solution; cooling and crystallizing the solution at a temperature of between 8 DEG C below zero and 6 DEG C below zero; performing centrifugal separation to obtain potassium chloride crystal and mother liquor; and drying potassium chloride crystal to obtain food-grade potassium chloride.
Description
Technical field
The present invention designs a kind of production technique 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%, 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, need import equipment, so the cost height of product.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of food-grade potassium chloride production technique 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 50 grams below 98%, adding water mixing post-heating dissolving, to obtain the laggard trip temperature of Repone K supersaturated solution be-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 50 grams below 98%, adding water mixing post-heating dissolving, to obtain the laggard trip temperature of Repone K supersaturated solution be-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.
Claims (1)
1, a kind of production technique of food-grade potassium chloride, it is characterized in that: get purity and be Repone K 50 grams below 98%, adding water mixing post-heating dissolving, to obtain the laggard trip temperature of Repone K supersaturated solution be-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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054285A CN101659427A (en) | 2008-08-26 | 2008-08-26 | Process for producing food-grade potassium chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810054285A CN101659427A (en) | 2008-08-26 | 2008-08-26 | Process for producing food-grade potassium chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101659427A true CN101659427A (en) | 2010-03-03 |
Family
ID=41787712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810054285A Pending CN101659427A (en) | 2008-08-26 | 2008-08-26 | Process for producing food-grade potassium chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101659427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417192A (en) * | 2011-08-26 | 2012-04-18 | 封昊 | Process for processing potassium chloride raw material for making ion membrane potassium hydroxide |
-
2008
- 2008-08-26 CN CN200810054285A patent/CN101659427A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417192A (en) * | 2011-08-26 | 2012-04-18 | 封昊 | Process for processing potassium chloride raw material for making ion membrane potassium hydroxide |
| CN102417192B (en) * | 2011-08-26 | 2014-04-16 | 封昊 | Process for processing potassium chloride raw material for making ion membrane potassium hydroxide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20100303 |