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

Chapter 2Production process Feedstock Fuel Net Remark SourceHeat exchange autothermal reformingPartial oxidationGJ(LHV)/tonne NH 328.9Major characteristics:CO 2 removal with improved solventsIndirect cooling of the ammonia reactorUse of gas turbine to drive process air compressor[3, European Commission, 1997][7, UK EA, 1999]24.8 3.6 – 7.2 [1, EFMA, 2000]27.5 4 – 8 [6, German UBA, 2000]Major characteristics:Low temperature desulphurisationIsothermal shift conversion31.8 x Use of Co-promoted ammonia synthesis gas catalyst [3, European Commission, 1997]CO 2 removal systems with solid adsorbentSupplying process steam by feed gas saturation withprocess condensates28.8 5.4 – 9.0 35.1 – 37.8 [1, EFMA, 2000]29 – 34 6 – 203639 – 4238.7Major characteristics:Claus unitLiquid nitrogen wash for final purification of synthesisgas from partial oxidationx The net energy consumption level is influenced by the site specific conversion factor for the imported electricity and plant throughputTable 2.6: Reported energy consumption levels for the production of ammonia[6, German UBA, 2000] andreferences within to [48, EFMA,1995] (updated in 2000)[3, European Commission, 1997]Large Volume Inorganic Chemicals – Ammonia, Acids and Fertilisers 51