Olefins production process

摘要

Disclosed is a process for the production of olefins comprising passing a synthetic naphtha to a steam cracker in which at least a portion of the synthetic naphtha is converted to olefins wherein the synthetic naphtha is a combined synthetic naphtha stream produced from a process comprising: a) contacting a synthesis gas stream at an elevated temperature and pressure with a Fischer-Tropsch catalyst in a Fischer-Tropsch reactor to generate a hydrocarbon product stream; b) separating the hydrocarbon product stream to provide at least one lighter fraction and at least one heavier fraction; c) subjecting at least a portion of the heavier fraction to hydrocracking and/or hydroisomerisation in a hydroprocessing reactor to produce an upgraded hydrocarbon product stream; d) combining the lighter fraction with the upgraded hydrocarbon product stream to produce a combined hydrocarbon stream; and e) fractionating at least a portion of the combined hydrocarbon stream to produce the combined synthetic naphtha stream.