ENERGY RECYCLING METHOD OF WASTE ENERGY IN BUTADIENE MANUFACTURING PROCESS

摘要

The present invention relates to an energy recycling method in a butadiene manufacturing process, regarding a butadiene manufacturing process using an oxidative dehydrogenation reaction, which comprises the steps of: a) collecting solvent stream from at least one device unit selected from a solvent collecting tower and a solvent refining tower; b) penetrating the collected solvent stream through at least one device unit equipped with a heat exchanger; and c) heating C4 oil inserted in a reactor by using steam with low-temperature utility generated in step b). The method is capable of improving economic feasibility of a butadiene manufacturing process, by reducing a net amount of energy required for the butadiene manufacturing process using the oxidative dehydrogenation reaction.