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Process and system for producing industrial calcium chloride solution from byproduct acid and application

A technology of calcium chloride solution and magnesium chloride solution, applied in the direction of calcium/strontium/barium chloride, other chemical processes, chemical instruments and methods, etc., to avoid excessive ferric ion content and avoid long-term storage from occupying industrial land Effect

Active Publication Date: 2021-08-17
LUXI CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]Aiming at the problem that the by-product acids produced in the production of chlorine organic chemical industry in the prior art contain a large amount of ferrous ions and low-molecular organic matter, which are difficult to deal with

Method used

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  • Process and system for producing industrial calcium chloride solution from byproduct acid and application

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Embodiment 1

[0039] Such as figure 1 Shown, present embodiment provides a kind of technique of byproduct acid production industrial calcium chloride solution, comprises the steps:

[0040] 1) Mix the by-product acid produced by producing benzyl chloride with iron-containing stones and magnesium oxide, stir evenly, and generate a crude solution of calcium chloride; the mass ratio of magnesium oxide to hydrochloric acid is 1:700, and the amount of stone added is based on the percentage of chloride The pH of the crude calcium solution is 9.0-9.5;

[0041] 2) adding magnesium chloride solution to the crude calcium chloride solution, stirring evenly, and removing the formed glue-packed agglomerates by pressure filtration to obtain an industrial calcium chloride solution. When the color of the solution turns from red to yellow, stop adding the magnesium chloride solution. The magnesium chloride solution is added successively, and the mass ratio of the magnesium chloride solution to the crude c...

Embodiment 2

[0044] Such as figure 1 Shown, present embodiment provides a kind of technique of byproduct acid production industrial calcium chloride solution, comprises the steps:

[0045] 1) Mix the by-product acid produced by the production of methyl chloride with iron-containing stones and magnesium oxide, and stir evenly to generate a crude solution of calcium chloride; the mass ratio of magnesium oxide to hydrochloric acid is 1:750, and the amount of stone added is based on calcium chloride The pH of the crude solution is 9.0-9.5;

[0046] 2) adding magnesium chloride solution to the crude calcium chloride solution, stirring evenly, and removing the formed glue-packed agglomerates by pressure filtration to obtain an industrial calcium chloride solution. When the color of the solution turns from red to yellow, stop adding the magnesium chloride solution. The magnesium chloride solution is added successively, and the mass ratio of the magnesium chloride solution to the crude calcium s...

Embodiment 3

[0049] Such as figure 1 Shown, present embodiment provides a kind of technique of byproduct acid production industrial calcium chloride solution, comprises the steps:

[0050] 1) Mix the by-product acid produced by the production of methyl chloride with iron-containing stones and magnesium oxide, stir evenly, and generate a crude solution of calcium chloride; the mass ratio of magnesium oxide to hydrochloric acid is 1:650, and the amount of stone added is based on calcium chloride The pH of the crude solution is 9.0 as the criterion;

[0051] 2) adding magnesium chloride solution to the crude calcium chloride solution, stirring evenly, and removing the formed glue-packed agglomerates by pressure filtration to obtain an industrial calcium chloride solution. When the color of the solution turns from red to yellow, stop adding the magnesium chloride solution. The magnesium chloride solution is added successively, and the mass ratio of the magnesium chloride solution to the crud...

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Abstract

The invention relates to the field of by-product acid treatment, and particularly provides a process and system for producing an industrial calcium chloride solution from by-product acid and application. The process for producing the industrial calcium chloride solution by using the byproduct acid comprises the following steps: 1) mixing the byproduct acid containing organic matters with stones and magnesium oxide, and uniformly stirring to generate a calcium chloride crude solution; and (2) adding a magnesium chloride solution into the calcium chloride crude solution, uniformly stirring, and carrying out filter pressing on generated binding agglomerates to remove the binding agglomerates, so as to obtain the industrial calcium chloride solution. The problem that in the prior art, byproduct acid generated in chlorine organic chemical industry production contains a large amount of low-molecular-weight organic matter and is difficult to treat is solved.

Description

technical field [0001] The disclosure relates to the field of by-product acid treatment, and specifically provides a process, system and application for producing industrial calcium chloride solution from by-product acid. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the development of industry, the production of chlorine-containing organic substances occupies a large proportion in the industry, such as methyl chloride, benzyl chloride, etc. In the production process, a large amount of hydrochloric acid is often consumed, and the treatment of hydrochloric acid after the reaction is more complicated. Difficulties, under normal circumstances, will return to the system to continue the reaction. On the one hand, the full utilization of hydrochloric acid is realized. On the other hand, hydrochloric acid usually contains a large amount of interm...

Claims

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Application Information

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IPC IPC(8): C01F11/24B01J20/04B01J20/30
CPCC01F11/24B01J20/046
Inventor 曹孟亮邢海强贾永朋陈明涛樊祥栋牛玉洁苏长宾
Owner LUXI CHEM GRP