大型二甲醚合成换热固定床反应器二维模型设计与计算精选.docVIP

大型二甲醚合成换热固定床反应器二维模型设计与计算 中文摘要 二甲醚作为一种基本化工原料，由于其良好的易压缩、冷凝、汽化特性，使得二甲醚在制药、燃料、农药等化学工业中有许多独特的用途。作为LPG石油液化气和石油类的替代燃料，二甲醚是具有与LPG的物理性质相类似的化学，在燃烧时不会产生破坏环境的气体，能便宜而大量地生产。与甲烷一样，被期望成为21世纪的能源之一。,为甲醇气相脱水制二甲醚的大型化开发研究提供了设计依据。 关键词：二甲醚，固定床，拟均相二维模型，Matlab语言，管式反应器 Design and Calculation of Two-dimensional Model of Heat Transfer Bed Reactor for Large DME Systhesis Abstract Dimethyl ether (DME) as a kind of basic chemical raw materials, Because of its good compression，Condensation, vaporization, Made in pharmacy, dimethyl ether as fuel, pesticide chemical industry has many special purposes. As LPG (liquefied petroleum gas) and oil alternative fuels, Dimethyl ether is with LPG and physical properties of similar chemicals，In the combustion gases will not produce damage to the environment，Can be a lot cheaper to produce. As with methane, are expected to become a 21st century energy sources. Based on the methanol, dimethyl ether gas dehydration characteristics of the study, proposed Simulated isothermal tubular reactor. Two-dimension mathematical model of the tube reactor was established, using the method of Crank - Nicholson of second order partial differential equations and boundary conditions, independent written Matlab program, and carried on the detailed computer simulation calculation.Discussion of the methanol feeding rate,temperature, speed, height of catalyst bed different radial and axial position of the average temperature and average conversion rate. In the design parameters of simulated under the bed temperature and methanol conversion and the reaction rate with the reaction conditions change. So as to provide design data for developing largescale plant of synthesizing dimethyl ether from methanol. Key words: dimethyl ether,Bed reactor, Two-dimension mathematical model, Matlab language，tube reactor 目录 第一章 文献综述 1 1.1 二甲醚的基本概况 1 1.1.1 二甲醚性质 1 1.1.2 二甲醚用途 1 1.1.3 二甲醚毒性 3 1.2 二甲醚国内外生产状况 4 1.2.1 国内情况 4 1.2.2 国外情况 7 1.3 二甲醚生产工艺路线概况 8 1.3.1 原始生产方法—液相法 8 1.3.2 气—固相法 8 1.3.3 一步法合成二甲醚 9 1