Optimization Of Production Control Of The MTBE Of Yanan Oil Refinery

MTBE (Methyl tertiary butyl ether) is an emerging oil and chemical product, which is eximious blended component of manufacturing clean gasoline. However, in Yan’an Refinery, the using period of catalyst were short, by-product were more; reaction temperature and alcohol-ene ratio were controlled quite unreasonable and the design of reactive distillation column has deficiencies, which lead to unsmooth operation, large energy consumption, short operation period, frequent maintenance and result in increasing unit operating costs and management costs. Inadequate response to this, the purpose of this paper is comparing and selecting the catalysts, determining the appropriate reaction temperature, choosing suitable alcohol-ene ratio, improving the design of reactive distillation column and optimize the operation. The main innovative work were done as follows:Study and optimize the current catalysts of MTBE of Yan’an Refinery. Based on the compare and analysis of two catalysts of D-006 and D-005 type, including their physical and chemical conditions, mechanical stability, exchange capacity, low-temperature activity, selectivity, economic cost, loading conditions, operating conditions, using calibration, by-products, inactivation factors and response measures, energy consumption, we choose D-006. The results show that the reactivity, selectivity, run cycle and economic cost of D-006 type catalyst were much better than the D-005 type catalyst.Study and optimize the key operations of MTBE unit. Based on the analysis of deficiencies of temperature of reactor, alcohol-ene ratio, catalytic distillation column, we determine the appropriate reaction temperature, suitable alcohol-ene ratio, optimize the operating process conditions of catalytic distillation column, in order to promote the various control about parameters and variables more coordination, The results show that reduce side effects in the actual operation, improve selectivity, and extend the life of the catalyst, improve the conversion rate, reduce the load of the subsequent process units, saving energy consumption, further reduce human disturbances and misoperations, improve the reliability and stability of the device operation, which make the device can be more cost-effective and long-cycle operating.