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Preparation method and application of caustic soda

A technology of caustic soda and refined table salt is applied in the field of sodium hydroxide preparation to achieve the effects of improving preparation concentration and purity and ensuring preparation effect

Inactive Publication Date: 2020-05-19
苏州慧伯凯化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a kind of preparation method and application about caustic soda, to solve the problem of how to reduce the potential safety hazard that produces in the production process that proposes in the above-mentioned background technology

Method used

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  • Preparation method and application of caustic soda

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preparation example Construction

[0019] see figure 1 , the present invention provides a technical solution: a preparation method and application of caustic soda, the steps of the preparation method and application of caustic soda are as follows:

[0020] S1: Weighing of raw materials: The ingredients of the raw materials are as follows according to mass proportion, 50-80 parts of refined table salt, 50-80 parts of ammonium bicarbonate, 30-50 parts of quicklime, 30-50 parts of anticaking agent, and some distilled water;

[0021] S2: Dissolution of raw materials: Dissolve refined table salt in distilled water to prepare saturated salt water. After standing for 1-2 hours, when salt crystals precipitate at the bottom, add ammonium bicarbonate to prepare fresh sodium bicarbonate, filter out sodium bicarbonate, and then Add quicklime to water, wait for 2-3 hours, and generate fresh calcium hydroxide. Calcium hydroxide is a slurry of calcium hydroxide solution. The generation time is less than 10-30 minutes. Ammoniu...

Embodiment 1

[0025] A kind of preparation method and application about caustic soda, the steps of this preparation method and application about caustic soda are as follows:

[0026] S1: Weighing of raw materials: The ingredients of the raw materials are, according to the mass proportion, 50 parts of refined salt, 50 parts of ammonium bicarbonate, 30 parts of quicklime, 30 parts of anticaking agent, and some distilled water;

[0027] S2: Dissolution of raw materials: Dissolve refined table salt in distilled water to prepare saturated salt water. After standing for 1-2 hours, when salt crystals precipitate at the bottom, add ammonium bicarbonate to prepare fresh sodium bicarbonate, filter out sodium bicarbonate, and then Add quicklime to water, wait for 2 hours, and generate fresh calcium hydroxide. Calcium hydroxide is a slurry of calcium hydroxide solution. The generation time is less than 10 minutes. Ammonium bicarbonate is directly mixed with calcium hydroxide or passed through ammonia ga...

Embodiment 2

[0031] A kind of preparation method and application about caustic soda, the steps of this preparation method and application about caustic soda are as follows:

[0032] S1: Weighing of raw materials: The ingredients of the raw materials are as follows according to mass proportion, 65 parts of refined salt, 60 parts of ammonium bicarbonate, 45 parts of quicklime, 40 parts of anticaking agent, and some distilled water;

[0033] S2: Dissolution of raw materials: Dissolve refined table salt in distilled water to prepare saturated salt water. After standing for 1 hour, when the salt crystallizes at the bottom, add ammonium bicarbonate to prepare fresh sodium bicarbonate, filter out sodium bicarbonate, and then put quicklime Add it into water and wait for 2.5 hours to generate fresh calcium hydroxide. Calcium hydroxide is a slurry calcium hydroxide solution. The generation time is less than 10 minutes. Ammonium bicarbonate is directly mixed with calcium hydroxide or stored with ammon...

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Abstract

The invention belongs to the technical field of sodium hydroxide preparation, and particularly relates to a preparation method and application of caustic soda. The preparation method and application of caustic soda comprise the following steps of: S1, weighing raw materials, S2, dissolving the raw materials, namely dissolving the refined edible salt in distilled water to prepare saturated edible salt water, adding ammonium bicarbonate to prepare fresh sodium bicarbonate when edible salt crystals are separated out from the bottom, filtering out sodium bicarbonate, and adding quick lime into water to generate fresh calcium hydroxide, S3, standing the raw materials, and S4, liquid separation. Calcium hydroxide and sodium bicarbonate are mixed to generate sodium hydroxide; while production andpreparation of sodium hydroxide are guaranteed, auxiliary products and ammonium chloride can be used for chemical fertilizer production and artificial stone preparation of calcium carbonate, and whenfreshness and deterioration prevention of the raw materials are guaranteed, the preparation concentration and the purity of sodium hydroxide are improved, residual impurities of other solutions are avoided, and the preparation effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of sodium hydroxide preparation, in particular to a preparation method and application of caustic soda. Background technique [0002] Sodium hydroxide is called caustic alkali and caustic alkali. It is a white crystal at room temperature. This product is strongly irritating and corrosive. Dust or smoke can irritate the eyes and respiratory tract, corrode the nasal septum, direct contact of the skin and eyes with sodium hydroxide can cause burns, and ingestion can cause burns of the digestive tract, mucosal erosion, hemorrhage and shock. It is widely used in production and life. The production of sodium hydroxide is mainly divided into laboratory production methods and industrial production methods. In the industrial production method, the method of electrolysis of saturated salt water is often used for preparation, but there are chlorine and hydrogen in the product, which leads to potential safety hazards i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D1/22C01C1/16C05C3/00C01F11/18
CPCC01C1/164C01D1/22C01F11/18C05C3/00
Inventor 邵志一
Owner 苏州慧伯凯化工有限公司
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