METHOD FOR RECYCLING ENERGY IN BUTADIENE PREPARATION PROCESS

摘要

The present invention relates to a method for recycling energy in a butadiene preparation process using oxidative dehydrogenation, comprising the steps of: a) producing electricity by supplying, to a turbine, a part or all of a gas product discharged from a solvent absorption column; b) allowing the gas product, which has passed through the turbine, to pass through one or more device units comprising a heat exchanger; and c) injecting, into a reactor, the gas product having passed through the device units comprising a heat exchanger. The economical efficiency of a butadiene preparation process is improved by lowering the amount of pure energy required in the butadiene preparation process using oxidative dehydrogenation.