SULFUR INJECTION IN FLUIDIZATION BED DEHYDROGENATION ON CHROMIUM CATALYST FOR DEHYDROGENATION PROCESS IMPROVEMENT AND PROCESS SCHEME OPTIMIZATION

摘要

Systems and processes for producing isomerized alkenes are disclosed. The systems mainly include an isomerization unit, a dehydrogenation unit, and a MTBE synthesis unit. A hydrocarbon stream is fed into the isomerization unit to form iso-alkanes in a sulfur free hydrocarbon stream. The sulfur free hydrocarbon stream is heated and then combined with a sulfur-containing hydrocarbon stream comprising sulfur containing compounds to form a reactant feed stream to the dehydrogenation unit. The iso- alkanes is dehydrogenated to form iso-alkenes. The formed iso- alkenes comprising isobutylene can be used as a feed stock for the MTBE synthesis unit.