摘要
Abstract
Cyclohexanone is a raw material used in the production of chemical products such as nylon,caprolactam,adipic acid,spices,pharmaceuticals,resins,etc.As a solvent,it is widely used in the recycling of coatings,dyes,paints,pesticides,rubber,printing,and plastics.According to raw materials different,the main methods for industrial production of cyclohexanone include phenol hydrogenation,cyclohexene hydration,and cyclohexane oxidation.During the high-temperature oxidation of cyclohexane and oxygen in the cyclohexanone oxidation process,by-products such as butyl cyclohexyl ether are generated in the cyclohexanone oxidation process.This type of substance is difficult to remove in subsequent vacuum distillation because its boiling point is not significantly different from the target product cyclohexanol,and it is also not involved in cyclohexanol dehydrogenation reation,as an inert substance circulating and accumulating in the system,the concentration continuously increases,which will affect the cyclohexanone loading the separation effect and dehydrogenation reaction process of the distillation process.The cyclohexanone unit of a certain company is operating for the first time in China the on line de-etherize technology successfully removes the ether content in the system to below 1.7%,and can maintain low ether content in the system for a long period of time,reducing the operating energy consumption of the device,the new technology has strong guiding significance for the domestic cyclohexanone industry.关键词
在线/脱醚/氧化法/环己酮/能耗/降低/分离Key words
online/de-etherize/oxidation method/cyclohexanone/energy consumption/reducing/separate
