A PROCESS FOR STARTING UP FLUIDIZED CATALYTIC REACTION APPARATUS USED FOR PRODUCING LOWER OLEFIN

摘要

Disclosed is a process for starting up fluidized reaction apparatus which are used for producing lower olefins from methanol or/and dimethyl ether. Said process includes after heating the catalyst bed of circulating fluidized catalytic reaction apparatus to above 200 °C or 300°C by using a starting-up auxiliary heat source, feeding methanol or dimethyl ether raw materials to a reactor, whereby heat released by the reaction makes the temperature of the reaction system apparatus increase quickly to a designed temperature, consequently making the system reach the normal operation state rapidly. Said process is suitable for starting up an exothermic fluidized catalytic reaction apparatus and can simplify the apparatus and operation, accordingly lowering the cost.