丙酮肟水解可逆反应的进程分析和过程工艺

以丙酮肟、盐酸为原料，经水解反应合成盐酸羟胺，研究建立了对水解可逆反应进程作定量检测的HPLC-氧化还原滴定组合分析方法，分析结果的平均回收率达99.64%，相对标准偏差≤2.04%（n=6）。建立了反应-蒸馏耦合工艺装置，研究和优化了丙酮肟水解反应制备盐酸羟胺的反应-蒸馏过程工艺条件，结果表明，当丙酮肟与盐酸的摩尔比为1∶2，盐酸质量分数为38%，加热温度为130℃，反应时间为3h时，丙酮肟原料转化率达到89%左右，盐酸羟胺产品收率达到84%左右。

Process analysis and process technology for the reversible hydrolysis of acetone oxime

Using acetone oxime and hydrochloric acid as raw materials，the hydrolysis of acetone oxime was carried out to prepare hydroxylamine hydrochloride. A quantitative analysis method by combining HPLC detection and redox titration was set up for the analysis of the reversible hydrolysis reaction equilibrium. The obtained analysis data of the combined method had a recovery of 99.64% and a RSD of no more than 2.04% (n=6). After that，a reactive distillation device was set up for the hydrolysis of acetone oxime，and the process technology of the reactive distillation was studied and optimized. The result showed that，at condition when the molar ratio of acetone oxime to HCl = 1∶2，HCl mass fraction at 38%，heating temperature at 130℃ and reaction time at 3h，the raw material conversion of acetone oxime approached around 89% and the product yield of hydroxylamine hydrochloride reached about 84%.