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Method for producing food-grade potassium chloride by adopting adsorption process

A potassium chloride, food-grade technology, applied in the field of production of food-grade potassium chloride, can solve the problem of not being able to meet the requirements of food-grade potassium chloride

Inactive Publication Date: 2015-11-18
HUALU ENG & TECH
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  • Claims
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Problems solved by technology

Containing flotation agents such as stearylamine, dodecylmorpholine and 2# oil in the industrial grade potassium chloride prepared by flotation crystallization method, in the prior art, the method for removing flotation agent is to increase auxiliary coagulant, and then filtered, and the filtrate was crystallized and then separated and dried to obtain potassium chloride without flotation agent. However, although the obtained potassium chloride did not contain flotation agent, coagulant was added, which could not meet the requirements of food-grade chlorination. Potassium requirements

Method used

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  • Method for producing food-grade potassium chloride by adopting adsorption process

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Embodiment Construction

[0018] Such as figure 1 Shown, a kind of method that adopts adsorption technology to produce food-grade potassium chloride, specifically divides the following steps to implement:

[0019] a) dissolving: at room temperature, dissolve the industrial grade potassium chloride solid into a potassium chloride solution;

[0020] b) Filtration: Add one or several mixtures of food-grade potassium hydroxide or potassium carbonate or potassium sulfate to the potassium chloride solution to allow it to mix with a small amount of calcium ions, magnesium ions or barium ions in industrial potassium chloride, etc. Impurities are reacted, and precipitates such as calcium carbonate, magnesium sulfate or barium sulfate are obtained after the reaction; the crude potassium chloride solution containing the precipitate is filtered through a filter, and the precipitate is filtered out to obtain the potassium chloride primary solution I;

[0021] c) Multistage macroporous resin adsorption purification...

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Abstract

The invention discloses a method for producing food-grade potassium chloride by adopting an adsorption process. The method comprises steps such as dissolving, filtering, multilevel macroporous resin adsorption purification, active carbon adsorption, concentration crystallization, solid-liquid separation, drying and the like. Octadecylamine, dodecylmorpholine and Number 2 oil in the industrial potassium chloride are removed by virtue of adsorption purification of macroporous resin and active carbon, so that the purposes of purifying the industrial potassium chloride and producing the food-grade potassium chloride can be realized.

Description

technical field [0001] The invention relates to a method for producing food-grade potassium chloride with industrial potassium chloride by adopting an adsorption process. Background technique [0002] Food-grade potassium chloride, also known as edible potassium chloride, is a colorless elongated diamond-shaped or cubic crystal or white crystalline powder, odorless, salty, soluble in water, soluble in glycerin, and slightly soluble in ethanol. It can be used as a salty agent and nutritional supplement to partially replace table salt and prevent people from excessive intake of table salt. In addition, potassium chloride, like table salt, can be used in food such as agricultural products, aquatic products, animal products, fermentation, seasoning, canned food, convenience food, etc. Cost control plays an indispensable role. [0003] With the sustained and rapid growth of my country's economy, a huge market space has been provided for food-grade potassium chloride products. ...

Claims

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Application Information

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IPC IPC(8): C01D3/14
Inventor 柯曾鹏杨帅敏杨志国薛民权陈维平
Owner HUALU ENG & TECH
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