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Process for deamination and degasification of filtrated stock generated during alkali making

A technology for filtering mother liquor and deamination, applied in the direction of ammonium halide and other directions, can solve the problems of consuming steam heat source, low production efficiency, large equipment, etc., and achieve the effects of low use cost, high production efficiency and small investment

Inactive Publication Date: 2013-04-03
湖南海联三一小苏打有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of heating and distilling the filtered mother liquor is generally used for deamination and degassing, which has low production efficiency, consumes a large amount of steam heat source, huge equipment, and high cost

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0006] Choose an open plastic reaction tank, and according to the reaction ratio, continuously input the soda filter mother liquor and hydrochloric acid into the tank, mix evenly, and neutralize to pH=5.8~6.5 to complete the acidification reaction NH 4 HCO 3 +HCI?NH 4 CI+H 2 O+CO 2 ↑, (NH 4 ) CO 3 +2HCI?2NH 4 CI+H 2 O+CO 2 ↑, the free ammonia in the mother liquor is instantly transformed into fixed ammonium, and carbon dioxide gas is released at the same time, which is discharged from the open barrel. The chemical properties of the obtained fixed ammonium are particularly stable, and it does not decompose at a temperature below 110°C, which ensures the smooth progress of the thermal production of ammonium chloride.

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PUM

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Abstract

The invention discloses a process for deamination and degasification of filtrated stock generated during alkali making. The process is characterized by comprising the following steps of: continuously inputting the filtrated stock generated during alkali making and hydrochloric acid into an acid-proof open container in a reactive mixture ratio; and uniformly mixing until the pH value is equal to 5.8 to 6.5 to finish acidification, wherein free ammonia in the filtrated stock is transformed into fixed ammonium, and carbon dioxide gas is released at the same time. By adopting the process, special equipment is not required, the investment is low, and the investment of capital construction is only 1 / 100 of that of a physical distillation method; steam and other energy are not consumed, so that the use cost is reduced; and the reaction is finished instantly, so that the production efficiency is high, and the process is convenient to operate.

Description

technical field [0001] The invention relates to a chemical production technology, in particular to a process for deammonization and degassing of alkali filtering mother liquor. Background technique [0002] In chemical production, when ammonium chloride is produced by thermal method, there is a process of deammonization and degassing of the mother liquor filtered by alkali making to ensure smooth evaporation and recovery of ammonium chloride in the mother liquor. At present, the method of heating and distilling the filtered mother liquor is generally used for deamination and degassing, which has low production efficiency, consumes a large amount of steam heat source, huge equipment and high cost. Contents of the invention [0003] The purpose of the present invention is in order to overcome above-mentioned weak point, and provide a kind of investment is little, production efficiency is high, easy to operate soda filter mother liquor deammonization and degassing process. ...

Claims

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Application Information

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IPC IPC(8): C01C1/16
Inventor 李业泳周小平周游
Owner 湖南海联三一小苏打有限公司
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