新型二甲醚-发电多功能系统的设计与分析

Design and Analysis of a New Dimethyl Ether-Electric Power Polygeneration System

由于从偏远地区长距离输送天然气的成本较高,将天然气就地转化为高附加值且易运输的化工产品,比如甲醇、二甲醚等,是西部天然气资源利用的重要途径之一。论文以天然气空气部分氧化制合成气与二甲醚合成工艺为基础,针对合成尾气不同利用方式,提出二甲醚单产工艺和二甲醚/动力联产工艺。与单产二甲醚的工艺相比,联产系统的相对节能率为8.94%。文中还探讨了合成气的氢碳比对于联产系统性能的影响。

Because transportation of natural gas from remote regions is rather expensive, one noteworthy way of utilizing natural gas resources in the West is to convert them into facilely transportable chemical products with high added value, such as dimethyl, methanol etc. A comparison between the technology of singular production of dimethyl ether against one combined with power generation is being presented. With the latter one 8.94 % relative energy saving may be attained. The influence of hydrogen to carbon ratio of the syngas on the co-production system＇ s performance is also being discussed. Figs 8, table 1 and refs 13.