RECOVERY OPTIONS FOR n-BUTANE DEHYDROGENATION FOR ON-PURPOSE BUTADIENE PRODUCTION

摘要

A process for the production of butadiene is presented. The process converts a butane stream through dehydrogenation to process stream having butenes. The butenes are treated and separated from the process stream to generate an olefin rich stream. The olefin rich stream is passed to an oxydehydrogenation reactor for conversion to butadienes. The process utilizes a cold-box separation process for efficiently separating the process stream generated through dehydrogenation to separate light gases from the C4 hydrocarbon stream.

主权项

1. A process for the dehydrogenation of n-butane comprising:
passing a first stream comprising n-butane to a dehydrogenation reactor to generate a second stream comprising n-butane and butenes; passing the second stream to a drying unit to generate a dried second stream passing the dried second stream to a cold-box condensing unit to generate a third stream comprising liquid C4 hydrocarbons and a fourth stream comprising lighter gases; passing the third stream to an olefin separation process to generate a fifth stream rich in olefins and a sixth stream rich in paraffins; and passing the fifth stream to an oxydehydrogenation reactor to generate a product stream comprising butadienes.