Research On Two-Stage Decomposition Reaction Process Of Cumene Hydroperoxide

Phenol (carbolic acid) and acetone are the important organic chemical raw materials in many fields, such as dyes, plastics, pesticides, medicine and other fields, have important uses currently. Cumene process been a major domestic and foreign production method of phenol since 1949. The process produces some by-products-dimethylbenzyl alcohol (DMPC), a-methylstyrene (AMS), dicumyl peroxide (DCP) cumyl phenol byproduct, AMS dimer.How to further improve the production of phenol benzene consumption, in recent years the industry has been the focus of attention. In this paper, the by-product of the oxidation reaction DMPC is converted to AMS, AMS can be hydrogenated to cumene (IPB), to return to the separation section of cumene reused, thus reducing the consumption of benzene, thereby improving the overall yield of the overall process.In this paper, for the two-stage decomposition process in the Yanshan Petrochemical lower DCP conversion rate and yield AMS, as well as high AMS dimers and cumylphenol content issues,we conducted simulation experiments by gas chromatography and HPLC analysis for two-stage decomposition Reaction process of cumene hydroperoxide. Mainly on the impact on temperature, reaction time and concentration of acid to two-stage decomposition reaction in a batch simulation device, to ensure the best optimization to reaction condition. Under optimum conditions, AMS can yield 80%. The reaction conditions suitable for the factory, on the continuity of the plug flow reactor has been optimized reaction conditions of the experiment, mainly on the reaction temperature and residence time for the impact of two-stage decomposition reaction. We optimized conditions, DHCP and DMPC conversion rate has increased-can be greater than 80%. The dry phenol, AMS dimers and other substances affect the product quality is controlled within an appropriate range. And we carried out thermodynamics, kinetics analysis, and analysed endothermic and exothermic reactions, calculated the equilibrium constants of each reaction to create the conditions for the application of two-stage decomposition reaction in the Yanshan Petrochemical means reducing consumption of benzene.