T/ZAEPI 015-2023 The hydrolysis of halogenated aromatic hydrocarbon cyanide to recover sulfuric acid

Scope

Scope: This document is applicable to sulfuric acid obtained after refining and removing impurities in the hydrolysis reaction of halogenated pyridine nitrile and halogenated benzenenitrile. It can be used as a raw material for refining terephthalic acid (TPA), preparing fire-retardant and heat-insulating materials such as magnesium sulfate or calcium sulfate, and preparing industrial ammonium sulfate, or as a neutralizing agent in the process of treating dyeing wastewater. This product shall not be used in agriculture, the food and pharmaceutical industries, or in the post-biochemical treatment steps of dyeing wastewater treatment processes. Main technical content: This document specifies the term definitions, technical requirements, test methods, inspection rules, and marking, packaging, transportation, storage, and safety of the recovered sulfuric acid obtained from the hydrolysis reaction of halogenated aromatic hydrocarbon cyanides (hereinafter referred to as recovered sulfuric acid).

Development Information

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