文献类型：期刊文献

中文题名：甲醇和甲醛催化合成聚甲氧基二甲醚

英文题名：Catalytic synthesis of polyoxymethylene dimethyl ethers from methanol and formaldehyde

作者：施敏浩[1];刘殿华[1];赵光[1];房鼎业[1];罗万明[2];刘宏伟[2];王军峰[2];李铖[2]

机构：[1]华东理工大学联合化学反应工程研究所,上海200237;[2]陕西延长石油集团炼化公司,陕西洛川727406

年份：2013

卷号：64

期号：3

起止页码：931

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20131416174779);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：中央高校基本科研业务费专项资金项目(WA0914014)~~

语种：中文

中文关键词：聚甲氧基二甲醚;大孔阳离子交换树脂;甲醇;甲醛

外文关键词：polyoxymethylene dimethyl ethers; macroporous cation exchange resin;methanol formaldehyde

摘要：聚甲氧基二甲醚作为柴油添加剂,可以提高柴油的十六烷值(CN),提高燃油的利用率,作为甲醇大宗下游产品具有广阔的应用前景。在固定床管式反应器中,以改性大孔阳离子交换树脂为催化剂,在温度40～100℃、液相空速1.32～16.37h-1、甲醛/甲醇摩尔比1～4和反应压力0.1～3.0MPa下,以单因素实验和正交实验相结合的方式,系统地研究了甲醛与甲醇缩醛化工艺条件,获得了较佳的工艺条件,在温度70℃、甲醛/甲醇摩尔比3∶1、液相空速1.32h-1、反应压力2.0MPa的条件下,甲醇的转化率为69.72%,DMM3—8选择性为62.08%。
Polyoxymethylene dimethyl ethers as the additive of diesel oil can increase cetane number （CN） and improve fuel efficiency. It will have a broad application prospect as methanol downstream product. In a continuous flow fixed bed tubular reactor, using modified macroporous cation exchange resin as catalyst, the effects of temperature, formaldehyde/methanol molar ratio, pressure and liquid space velocity on the reaction were investigated. The single-factor and orthogonal experimental methods were applied at a broad experiment range （temperature 40-100℃, liquid space velocity 1.32-16.67 h 1, formaldehyde/ methanol molar ratio 1-4 and pressure 0.1-3.0 MPa）. The orthogonal experiment design was used to investigate the integral effect of these factors on the reaction. Thus the appropriate operating conditions were obtained. At temperature 70℃, formaldehyde/methanol molar ratio 3 ： 1, liquid space velocity 1.32 h-1, pressure 2.0 MPa, conversion of methanol and selectivity of DMM3 8 were 69.72% and 62.08% respectively.