专利详情

专利名称	Process for the conversion of methanol to light olefins and catalyst for such process
申请号	US28767794A	专利类型	US
公开（公告）号	US5573990A	公开（授权）日	1996.11.12
申请（专利权）人	中国科学院大连化学物理研究所	发明（设计）人	WANG GONGWEI ; YING MULIANG ; WANG XINGCHUN ; CHEN GUOQUAN
主分类号	B01J29/40	IPC主分类号	B01J29/40
专利有效期	Process for the conversion of methanol to light olefins and catalyst for such process 至Process for the conversion of methanol to light olefins and catalyst for such process	法律状态
说明书摘要	A zeolite catalyst from ZSM-5 modified with phosphorus, rare earth elements and pore structure regulator is used for methanol/dimethyl ether conversion to light olefins. High temperature, non-recycling, continuous-running process is realized in the reactor system, comprising a dehydration reactor and several (2-n) adiabatic, fixed bed cracking reactors, loaded with the catalyst in multi-stage packing and operated in reaction regeneration cycles. The catalyst possesses high activity, high selectivity, good hydrothermal stability and long reaction life time. Operation of 100% methanol conversion and >85% C2-C4 selectivity has been performed in a reactor system of the scale 0.7-1 ton CH3OH/day for>600 hours on stream and with reaction time of single cycle >24 hours.