应用化学2025，Vol.42Issue(8)：1135-1143,9.DOI:10.19894/j.issn.1000-0518.250119
H2O2法生产水合肼工艺中乙酰胺-乙酸铵催化体系的再生转化
Regeneration and Conversion of the Acetamide-Ammonium Acetate Catalytic System in the H2O2-Based Hydrazine Hydrate Production Process
摘要
Abstract
In order to study the recycle process of amide catalyst in the production of hydrazine hydrate by H2O2 method,the effects of reaction form,temperature,time,and ammonia flow rate process conditions on reaction equilibrium and acetamide yield were investigated for the dehydration of ammonium acetate to acetamide.The results showed that adopting a distillation reactor can significantly improve the reaction efficiency.The yield of acetamide can reach over 60％with a mass fraction(w)of no less than 80％after 3～4 h of reaction at 160℃,300 mL/min ammonia flow rate.In addition,a continuous distillation experiment was conducted.The conditions were as follows:the introduction of the aqueous phase from methyl ethyl ketazine synthesis was into the reactor at a rate of 760.0 g/h,an ammonia flow rate was 650 mL/min,and a reflux ratio was 0.1.After the system stabilizes,the temperature of head was 93℃,and 554.4 g/h of distillate were collected overhead;The temperature of the boiler was 168℃,and 248.7 g/h of recycled catalyst were obtained by draining the boiler which the mass fraction of acetamide is 83.61％.关键词
H2O2法/水合肼/催化剂回用/乙酸铵脱水/乙酰胺/反应精馏Key words
H2O2 method/Hydrazine hydrate/Recycle of catalyst/Dehydration of ammonium acetate/Acetamide/Reactive distillation分类
化学化工引用本文复制引用
简光辉,杨帆,白红鑫,王洋,贾立明,任保轶..H2O2法生产水合肼工艺中乙酰胺-乙酸铵催化体系的再生转化[J].应用化学,2025,42(8):1135-1143,9.基金项目
辽宁省科技计划联合计划项目(No.2024JH2/102600226)资助 Supported by the Joint Project of Science and Technology Planning of Liaoning Province(No.2024JH2/102600226) （No.2024JH2/102600226）
