Integrating a methanol to olefin reaction system with a steam cracking system

摘要

The present invention provides an integrated system for producing ethylene and propylene from an oxygenate to olefin (OTO) reaction system and a steam cracking system. In a preferred embodiment, at least a portion of an effluent stream from a steam cracking furnace is combined with at least a portion of an effluent stream from an OTO reaction system. Preferably the combined effluent stream is processed by one or more quench units, compression units, and/or fractionation columns. By integrating a steam cracking system with an OTO reaction system, equipment count can be reduced at a significant commercial savings. Compressor efficiency per pound of ethylene and propylene can also be advantageously increased over conventional steam cracking systems. Moreover, the amount of pollutants produced per pound of ethylene and propylene produced can be significantly reduced over the amount of pollutants produced per pound of ethylene and propylene produced in a steam cracking system.