Process for preparing hydroxylamine hydrochloride by adopting oxime acidolysis method

The invention belongs to the technical field of hydroxylamine hydrochloride, and discloses a process for preparing hydroxylamine hydrochloride by adopting an oxime acidolysis method. The method comprises the following steps: a) a raw material cache configuration process; b) an acidolysis reaction process; c) a ketoxime rectification process; d) a dehydration and drying process; e) an alcohol recycling process; and f) an acetaldehyde oximation process. By adopting the process, the process route and technical parameters of hydroxylamine hydrochloride production by methyl ethyl ketone acidolysis are optimized, a pervaporation coupling technology is applied, the product yield and quality can be improved, further improvement of the industrial technology is promoted, related industries can be driven to develop, and resource reasonable utilization can be realized. 本发明属于盐酸羟胺制备技术领域，公开了采用肟酸解方法制备盐酸羟胺的工艺，其包括如下步骤：步骤a）原料缓存配置工序，步骤b）酸解反应工序，步骤c）酮肟精馏工序，步骤d）脱水干燥工序，步骤e）乙醇回收工序，步骤f）乙醛肟化工序。本发明工艺优化了甲乙酮肟酸解生产盐酸羟胺的工艺路线及技术参数，应用了渗透汽化耦合技术