Large Volume Inorganic Chemicals - Ammonia ... - ammk-rks.net

Chapter 22.4.20 Indirect cooling of the ammonia synthesis reactorDescriptionIn the ammonia synthesis reactor, the catalyst is divided into several layers and the heat isremoved by heat exchangers instead of by injecting cold synthesis gas. The reaction heat can beused for the production of high pressure steam, or for the boiler feed-water preheat, as well as toheat the incoming syngas to the desired inlet temperature of the catalyst beds. Energy is saved inthis way since a higher ammonia conversion rate per pass is achievable. In addition, the volumeof catalyst necessary can be reduced.Achieved environmental benefits• energy savings• higher ammonia conversion rate per pass• reduced catalyst volumes.Cross-media effectsNone believed to be likely.Operational dataNo information provided.ApplicabilityThis is an integrated technique applicable to new and existing steam reforming and partialoxidation plants.EconomicsCost savings can be assumed.Driving force for implementationCost savings.References to literature and example plants[3, European Commission, 1997]84 Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers