Verfahren zum Behandeln von Abgas aus einer Zementanlage

Details

Veröffentlichungs-Nr.

EP4265581

Aktenzeichen

EP22020183

Anmeldetag

20. April 2022

Veröffentlichung

4. Juni 2025

Erteilung

4. Juni 2025

Rechtsraum

EP

IPC

C04B7/36

Abstract

A method of processing exhaust gas from a cement plant and a cement production unit, the cement plant comprising one or several raw meal mills for milling a cement raw meal, one or several preheater strings, each having a plurality of preheater stages, and a rotary kiln, wherein the one or several preheater strings are for preheating the cement raw meal in counter-current flow with an exhaust gas from the rotary kiln, wherein the method comprises: - extracting the exhaust gas from a a second highest or highest stage of at least one of the one or several preheater strings, - cooling the exhaust gas to a temperature of < 250°C, - dedusting the exhaust gas, - introducing the cooled and dedusted exhaust gas into a carbon capture installation, in which CO<2> is separated from the exhaust gas for obtaining a CO<2> lean gas, wherein the exhaust gas, when being introduced into the carbon capture installation, has a CO<2>-content of > 25 vol.-%, preferably > 30 vol.-%.

Anmelder

Firma

Holcim Technology Ltd

Land

🇨🇭 Schweiz

Fachgebiete