Abstract: In order to reduce the production cost of No.2 hydrogen production plant using natural gas as feed, SINOPEC Beijing Yanshan Company used the by-product methane hydrogen gas (methane more than 70% by volume) from the C₂ recovery unit as feed for No.2 hydrogen production plant. To avoid the adverse effect of nitrogen in the feed on the medium temperature shift process, the process risk was analyzed and the key process indexes were monitored and tracked. The application results showed that the plant operated normally, and the compressor load reduced from 71% to 60%. The plant using the methane hydrogen feed can save 23.28 million Yuan/a on natural gas cost and compressor power consumption.

Key words: hydrogen production, cost, refinery dry gas, methane hydrogen