Technology

Most of the Ammonia Plants recently designed by KBR utilize its Purifier™ Process (Picture), which combines low-severity Reforming in the Primary Reformer, a liquid N₂ Wash Purifier downstream of the Methanator to remove impurities and adjust the H₂:N₂ ratio, a proprietary Waste-Heat Boiler Design, a Unitized Chiller, and a Horizontal Ammonia Synthesis Converter.
Because the Secondary Reformer uses Excess Air, the Primary Reformer can be smaller than in conventional Designs. The Cryogenic Purifier consists of an Expander, Condenser, Feed/Effluent Exchanger, and Rectifier Column and removes impurities such as CO, CH₄, and Argon from Synthesis Gas while adjusting the H₂:N₂ ratio of the Makeup Gas in the Ammonia Loop.