Casale Sa

Iacopo Cerea

Jean Francois Granger

Ermanno Filippi

Raffaele Ostuni

Luca Redaelli

Jean François Granger

Giada Franceschin

Andrea Beretti

Pasquale Talarico

A process for the catalytic oxidation of ammonia, comprising: passing an ammonia-containing gas, in the presence of oxygen, over a catalyst contained in a reactor, obtaining a process gas containing nitrogen oxides, and cooling said process gas with a heat exchanger accommodated in the reactor, wherein a portion of said process gas, located in the shell side, bypasses the heat exchanger and forms a hot current which mixes with cooled gas downstream the heat exchanger, and the bypass is regulated on the basis of a target outlet temperature of the mixed process gas.

Process and reactor for catalytic oxidation of ammonia

A dual-pressure plant for the synthesis of nitric acid comprising: a reactor () providing a gaseous effluent () containing nitrogen oxides; an absorption tower () nitrogen oxides react with water providing raw nitric acid and, said absorption tower operating at a pressure greater than the pressure of the reactor; a compressor () elevating the pressure of the reactor effluent () to the absorption pressure; said plant also comprising a first bleacher () and a second bleacher (), said first bleacher () stripping with air () nitrogen oxides from the output stream () of the absorption tower () providing a partially stripped nitric acid stream () and a nitrogen oxides-loaded air stream (), the former being fed to the second bleacher () and the latter being recycled to the delivery-side of said compressor ().

Plant for the production of nitric acid, a related process and method of revamping

A nitric acid production process, comprising tertiary abatement of N2O and NOx on a tail gas withdrawn from an absorption stage, said abatement including passing the tail gas over a sequence of a deN2O stage comprising a Fe-z catalyst and a deNOx stage comprising a V2O5-TiO2 catalyst in the presence of gaseous ammonia, wherein the tail gas at the inlet of deN2O stage and the tail gas at the inlet of deNOx stage have a temperature greater than 400&#xb0; C.

Process for the production of nitric acid with tertiary abatement of N2O and NOx

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Lugano, Switzerland

Iacopo Cerea