ALVIGO Group of Companies possesses exclusive license for right of invention use “Nitric acid production method and unit for nitric acid production with using the single-stage air compression”, protected by Russian Federation Patent No. 2248322 dd. December 19, 2007. The invention relates to nitric acid production, obtained by ammonia oxidation with air oxygen and absorption of nitrogen oxides by water in units at uniform pressure at ammonia oxidation stages and absorption of nitrogen oxides.
This invention solves the task of significantly simplifying of obtained compressed air to required pressure by eliminating of air cooler, centrifugal compressor, multistage reducer. The advantages of this invention are the following:
- simplifying of nitric acid plant;
- reduction of capital costs;
- increasing of equipment reliability;
- reduction of cooling water consumption and, as a consequence, water cooling system;
- reduction of specific fuel consumption.