Energy Saving Technology And The Application Of The Dual Pressure Nitric Acid Plant

In various acids,nitric acid is second only to sulfuric acid according to the scale of production because of its great significance in the national economy.The two large consumption of nitric acid industry is agriculture and the explosives industry.The one is used as fertilizer,the other is used as basic raw material.In organic chemistry,the mixed liquor of nitric acid and sulfuric acid is a significant nitration reagent.First,the paper introduced the application,the chemical property and several preparation technology of nitric acid.Then,we compared the differences between several technology.We particularly analyzed the problems in the dual-pressure nitric acid unit by comparing several synthetic process of nitric acid.Finally,we elaborated several technological breakthroughs of nitric acid.We put forward several improved methods which aimed at several disadvantages of nitric acid about dual-pressure nitric acid process.The all research are based on the 150kt/a nitric acid unit of hubei sanning chemical technology limited company.We studied raising the utilizing rate of ammonia combining concrete production circumstance.We depressed its loss of ammonia to air by further exploration and avoided waste and environmental pollution.The Innovation of reduction of ammonia reduced the system resistance and saved a great deal of energy.