Cryogenic purification of hydrodealkylation and refinery hydrogen off-gas streams

Abstract

Abstract The hydrodealkylation of toluene to benzene involves the utilization of large quantities of relatively expensive hydrogen. Of the hydrogen consumed, part is obtained by the recovery of unused hydrogen from the reactor through purification and recycling, while the remainder is supplemented by make-up hydrogen recovered from refinery off-gas streams. An integrated cryogenic process handles the dual purification of these two separate hydrogen streams to recover a single high purity hydrogen product and the valuable by-product components contained in said streams while maintaining optimum energy consumption.

Inventors

• 👤 G Banikiotes
• 👤 J Meisler
• 👤 Baush E Van

Bibliographic Details