Patent · US Active

Process for manufacturing clinker with controlled CO2 emission

US8187374B2 · kind B2 · utility

4Cited by

5References

7Claims

0Family size

Assignee

L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

Erwin Penfornis · Oak Park, US
Guillaume De Smedt · Antony, FR

Key dates

Filing date	Oct 22, 2007
Grant date	May 29, 2012
Priority date	—
Expiry date	Aug 31, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D2258/0233
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to a process for manufacturing clinker from a raw mix, implementing the following: preheating of the raw mix by combustion flue gases; precalcination of the raw mix; and calcination of the precalcined raw mix in a rotary kiln, in which process the precalcination and the calcination in the rotary kiln produce combustion flue gases that contain CO2, in which the combustion flue gases created by the precalcination undergo a CO2-removal treatment without said flue gases mixing with the combustion flue gases created by the calcination in the rotary kiln.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.