Hydrogen and ammonia production system

Abstract

The invention relates to a hydrogen and ammonia production system (1) which is a hydrogen and ammonia production system for use in a plant (10) comprising a boiler (16) for discharging boiler blowdown (F3) and an exhaust gas treatment device (19) for discharging waste water (F1) from the exhaust gas treatment process. The hydrogen and ammonia production system (1) includes: the first ammonia recovery device (21) to form the first concentrated ammonia solution (F4) by introducing wastewater (F1) from the exhaust gas treatment process into the extraction process; the second ammonia recovery device (22) to form the second concentrated ammonia solution (F8) by introducing boiler discharge water (F3) and the first concentrated ammonia solution (F4) into the extraction process; Ion removal device (27) to separate wastewater (F9) discharged from the second ammonia recovery device (22) into a concentrated ion solution (F10) as an alkaline source in wastewater treatment in the plant (10) and seepage water (F11); and water electrolysis device (28) to produce hydrogen gas (F12) by electrolysis of seepage water (F11)