Method and apparatus for preventing iron contamination in corrosive service

This invention relates to processes that generate a gas stream comprising ammonia (NH ) and carbon dioxide (CO ). In particular, the invention relates to a method for reducing undesirable side products that form when ammonia is removed and recovered from the gas stream. A method which reduces iron contamination of a system which receives ammonia from an ammonia recovery process by one or more of the following techniques:a) Physically separating iron oxide, iron containing colloidal particles, and liquid droplets from the gas stream;b) Preventing AC from depositing on piping via elimination of condensation, thereby preventing corrosion of the piping; orc) Installing piping and equipment that is not susceptible to corrosive attack by AC, thereby eliminating the source of iron contamination.