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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AI-Extracted Technical Summary

Problems solved by technology

At present, the method of heating and distilling the filtered mother liquor is generally used for deamination and dega...
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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.

Application Domain

Ammonium halides

Technology Topic

ChemistryDegasification +6

Examples

  • Experimental program(1)

Example Embodiment

[0006] Choose an open plastic reaction barrel, and according to the reaction ratio, respectively continuously input the alkali-making filtration mother liquor and hydrochloric acid into the barrel, mix evenly, and neutralize to pH=5.8~6.5, 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 opening of the barrel. The obtained fixed ammonium has a particularly stable chemical property, and does not decompose at a temperature below 110°C, ensuring the smooth progress of thermal ammonium chloride production.

PUM

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Description & Claims & Application Information

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