Comparison between Conventional and Low-Waste Nitric Acid Producing Technologies. Compendium on Low- and Non-Waste Technology

摘要

The company uses a pressurized process with catalytic end-gas reduction (GIAP). This includes: (1) Oxidation ammonia - oxidation HO - absorption NOx - catalytic end-gas reduction. (2) End gas 3.300 m3 with NOx content (vol. %) 0.1 - 0.15 (The conventional process produces an end-gas with an NOx content (vol.%) of 0.2 - 0.4). (3) Acidic water effluent of 1-3 m3/day with NO3 - content of 5g/1 (The waste water volume form the conventional process is about 5-15 m3/day). (4) End-gas amounting to 4.100 NM3/ton of HNO3 with an NO - content (vol %) of 0.005 percent, CO-content of 0.1 percent, and CO2 - content of 2.5 per cent. (5) Acidic waste water amounting to 1 - 3 m3/day with nitric acid content of 5g/1.