METHOD FOR INTENSIFICATION OF APPARATUS FOR PRODUCING NON-CONCENTRATED NITRIC ACID Russian patent published in 2014 - IPC C01B21/40 

FIELD: chemistry.

SUBSTANCE: method for intensification of apparatus for producing non-concentrated nitric acid includes compressing air in an axial air compressor; steps for oxidation of ammonia with atmospheric oxygen and absorption of nitrogen oxides at different pressure; recuperating the energy of hot tail gases in a gas turbine, which consists of low- and high-pressure turbines, wherein flow rate of air through the axial compressor and compression pressure of air after passing through the compressor is increased by providing the axle of the axial compressor with an additional stage for compressing and changing the profile of part of the working blades at other stages of the axial compressor; and distribution of heat drop between the low- and high-pressure turbines is carried out by reducing pressure after the high-pressure turbine by increasing the exit angle of the gas stream at the outlet of the first guide of the blade of the low-pressure turbine.

EFFECT: invention increases output of apparatus for producing non-concentrated nitric acid.

3 cl, 3 dwg, 1 tbl