合成气制芳烃研究进展

根据工艺路线不同,对合成气一步法、合成气两段法、合成气联产芳烃3种工艺进行分析。发现合成气一步法采用复合催化剂,由F-T合成催化剂与芳构化催化剂复合而成,或甲醇合成催化剂与芳构化催化剂复合而成,将合成气直接转化为芳烃,芳烃选择性较低,为50%左右;合成气两段法是在2个反应器中,分别采用甲醇脱水催化剂,芳构化催化剂,一段将合成气转化为二甲醚,二段将二甲醚转化为芳烃,芳烃选择性可达80%。合成气联产芳烃是在生产各类油品的同时富产芳烃,是目前较易实现工业化的一条路线。最后对合成气制芳烃发展提出了一些建议。 According to the process,analyse syngas one-stage process,syngas two-stage process and cogenerating aromatics.The first process adopts composite catalyst,which is composed of F-T synthesis catalyst and aromatization catalyst or methanol dehydration catalyst and aromatization catalyst.The product aromatics have low selectivity,only about 50 percent.The second process adopts methanol dehydration catalyst and aromatization catalyst which are used separately in two reactors,syngas is converted to DME in the first reactor and DME is converted to aromatics in the second reactor,the product aromatics performance high selectivity,about 80 percent.The third process produces aromatics while manufacturing kinds of oil,which is easy to realize industrialization at present.Provide some suggestions for the development of syngas to aromatics