Verfahren zur Herstellung von Salpetersäure und Anlage zur Herstellung von Salpetersäure

Details

Veröffentlichungs-Nr.

EP4789752

Anmeldetag

6. Februar 2025

Veröffentlichung

12. August 2026

Rechtsraum

EP

Abstract

The present disclosure relates to a process for production of nitric acid and a nitric acid production plant, particularly wherein a tail gas recycle stream is supplied to the converter. More in particular, in the process and plant of the present disclosure, at least part of the tail gas is treated in a tail gas treatment section and further heated in a heating section, thereby obtaining a heated tail gas stream, typically having the temperature in the range of 400-600°C. The temperature of this heated tail gas stream is reduced by mixing with a tail gas bypass stream bypassing the tail gas treatment section and/or heating section, resulting in the tail gas recycle stream that can be recirculated to the converter and having the correct temperature for the converter, typically having a temperature in the range of 150-300°C. The disclosure further provides the use of the nitric acid production plant for performing the method according to present disclosure and the method of revamping a nitric acid production plant.

Anmelder

Firma

Yara International ASA

Land

🇳🇴 Norwegen