PROCESS FOR OBTAINING HYDROGEN FROM REFINERY OFF-GASES

摘要

The present disclosure provides a process for obtaining hydrogen of purity greater than 95% from refinery off-gas streams such as tail gas from a continuous catalytic reformer pressure swing adsorption (CCR PSA) unit. A hydrocarbon stream can be mixed with the refinery off- gas stream. The process of the present disclosure involves the steps of compressing the feed stream, reforming the pressurized feed stream, performing a water gas shift reaction on the reformed stream followed by adsorption of hydrogen and desorption to provide hydrogen of purity greater than 95%.