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A kind of method for producing potassium nitrate with ammonium nitrate and potassium chloride mixing method

A technology of potassium nitrate and potassium chloride, which is applied in the chemical industry, can solve the problems of high technology transfer fees, etc., and achieve the effects of being suitable for large-scale production, improving appearance quality, and good quality

Active Publication Date: 2017-05-31
贵州瑞丰源农业科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is exclusively mastered by Israel Haifa Chemical Company, and the technology transfer fee is expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of method producing potassium nitrate with ammonium nitrate and Repone K mixed method, comprises the following steps:

[0020] (1) Preparation of impurity remover: mix caustic soda and sodium alkylbenzene sulfonate at a ratio of 1:1;

[0021] (2) Add 50kg of ammonium nitrate to 20kg of water, add 50kg of potassium chloride after it dissolves, and stop heating after heating to 100°C to obtain a feed solution;

[0022] (3) Put 0.1kg impurity remover in the reaction tank, pour the feed liquid, and crystallize naturally. When the temperature drops to 15°C, potassium nitrate and ammonium chloride are completely precipitated;

[0023] (4) Release the liquid, and the ammonium chloride floating on the surface of the liquid is released together with the liquid, and the potassium nitrate sinking at the bottom of the reaction tank is washed with water once, and the potassium nitrate is taken out, drained, and dried until it cannot be pinched by hand. Sticky hands, that is,...

Embodiment 2

[0025] A kind of method producing potassium nitrate with ammonium nitrate and Repone K mixed method, comprises the following steps:

[0026] (1) Preparation of impurity remover: mix caustic soda and sodium alkylbenzene sulfonate at a ratio of 1:1;

[0027] (2) Add 50kg of ammonium nitrate to 25kg of water, add 50kg of potassium chloride after it dissolves, and stop heating after heating to 100°C to obtain a feed solution;

[0028] (3) Put 0.1kg impurity remover in the reaction tank, pour the material liquid into it, and crystallize naturally. When the temperature drops to 20°C, potassium nitrate and ammonium chloride are completely precipitated;

[0029] (4) Release the liquid, and the ammonium chloride floating on the surface of the liquid is released together with the liquid, and the potassium nitrate sinking at the bottom of the reaction tank is washed with water once, and the potassium nitrate is taken out, drained, and dried until it cannot be pinched by hand. Sticky han...

Embodiment 3

[0031] A kind of method producing potassium nitrate with ammonium nitrate and Repone K mixed method, comprises the following steps:

[0032] (1) Preparation of impurity remover: mix caustic soda and sodium alkylbenzene sulfonate at a ratio of 1:1;

[0033] (2) Add 50kg of ammonium nitrate to 22.5kg of water, add 50kg of potassium chloride after it dissolves, and stop heating after heating to 100°C to obtain a feed solution;

[0034] (3) Put 0.1 part of impurity remover in the reaction tank, pour the feed liquid, and crystallize naturally. When the temperature drops to 17°C, potassium nitrate and ammonium chloride are completely precipitated;

[0035] (4) Release the liquid, and the ammonium chloride floating on the surface of the liquid is released together with the liquid, and the potassium nitrate sinking at the bottom of the reaction tank is washed with water once, and the potassium nitrate is taken out, drained, and dried until it cannot be pinched by hand. Sticky to get ...

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PUM

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Abstract

The invention discloses a method of producing potassium nitrate through a mixing method of ammonium nitrate and potassium chloride. The method includes following steps: (1) preparing an impurity removing agent by uniformly mixing sodium hydroxide and sodium alkylbenzenesulfonate according to 1:1; (2) adding 50 parts by weight of the ammonium nitrate to 20-25 parts by weight of water, and adding 50 parts by weight of potassium chloride when the ammonium nitrate is dissolved completely, heating the liquid to 100 DEG C, and stopping heating to obtain a liquid material; (3) placing 0.1 parts of the impurity removing agent in a reaction tank, adding the liquid material, and performing naturally crystallization, wherein potassium nitrate and ammonium chloride are completely separated out when the temperature is decreased to 15-20 DEG C; and (4) discharging the liquid, wherein the ammonium chloride floated on liquid level is also discharged with the liquid, adding water to washing the potassium nitrate deposited at the bottom of the reaction tank for one time, draining the potassium nitrate, drying the potassium nitrate until the potassium nitrate is not hand-sticky to obtain the potassium nitrate. The method is low in cost, is simple in processes, is high in yield and is good in quality. The by-product, ammonium chloride, is easy to recycle.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, in particular to a method for producing potassium nitrate by mixing ammonium nitrate and potassium chloride. Background technique [0002] Potassium nitrate is an important inorganic chemical raw material, mainly used in the manufacture of black powder, matches, glass products, photochemical glass, ceramic products, medicines, food, etc. [0003] Potassium nitrate is an excellent low-chlorine binary potassium fertilizer in agriculture. Its main advantages are as follows: ①The total nutrient content is as high as 59%, which contains about 13.5%-13.9% nitro nitrogen and 44.6%-46% K 2 O; ② When used as tobacco and tea fertilizer, SO in potassium sulfate 4 2- It will cause high sulfur content in tobacco and tea and reduce the grade, but potassium nitrate does not have this problem; ③ It has high solubility in water and is not easy to volatilize, so it is the best ingredient for liquid fer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01D9/10
Inventor 熊文跃
Owner 贵州瑞丰源农业科技开发有限公司
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