首页>
外国专利>
PROCESS AND PLANT FOR THE PRODUCTION OF ε-CAPROLACTAM AND AMMONIUM SULFATE ON INDUSTRIAL SCALE
PROCESS AND PLANT FOR THE PRODUCTION OF ε-CAPROLACTAM AND AMMONIUM SULFATE ON INDUSTRIAL SCALE
展开▼
机译：用于生产ε-己内酰胺和产业规模硫酸铵的过程和植物
展开▼
页面导航
摘要
著录项
相似文献
摘要
The invention provides a process and a plant for the production of ε-caprolactam and crystalline ammonium sulfate in an industrial-scale plant, wherein the plant comprises a Beckmann rearrangement reaction section, an ammonium sulfate crystallization section, and one or more heat exchangers configured to transfer heat from the Beckmann rearrangement reaction section to the ammonium sulfate crystallization section and wherein the process comprises the steps of: a) feeding (i) cyclohexanone oxime and (ii) oleum and/or sulfuric acid to the Beckmann rearrangement reaction section b) reacting components (i) and (ii) in the Beckmann rearrangement reaction section to form a reaction mixture comprising ε-caprolactam, whereby heat of reaction is generated; c) discharging the reaction mixture comprising ε-caprolactam from the Beckmann rearrangement reaction section; d) removing partially or fully the heat of reaction generated in the Beckmann rearrangement reaction section by one or more heat exchangers configured to transfer heat from the Beckmann rearrangement reaction section; e) feeding an aqueous liquid comprising ammonium sulfate to the ammonium sulfate crystallization section; f) introducing heat into the ammonium sulfate crystallization section comprising the aqueous ammonium-sulfate-comprising liquid by one or more heat exchangers configured to transfer heat into the ammonium sulfate crystallization section; g) forming ammonium sulfate crystals by evaporative crystallization in the ammonium sulfate crystallization section; characterized in that h) the heat of reaction removed from the Beckmann rearrangement reaction section in step d) is at least partially or fully transferred to the ammonium sulfate crystallization section in step f).
展开▼
