Title:
CEMENT PRODUCTION METHOD AND CEMENT PRODUCTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/246319
Kind Code:
A1
Abstract:
Hydrogen is added to CO2 that is contained in an exhaust gas from a cement production facility or CO2 that has been separated and collected from the exhaust gas to produce methane, the methane is supplied as an alternative fuel for a portion or the whole of a fossil fuel that is to be supplied to a pre-calciner in the cement production facility to pre-calcine a cement raw material with the pre-calciner, and the pre-calcined cement raw material is calcined with a cement calcining kiln in the cement production facility to produce a cement clinker. In this manner, CO2 in a cement exhaust gas that is not derived from the fossil fuel can be methanated and can be thereby utilized effectively, and it becomes possible to produce a cement while reducing CO2 and removing a harmful component.
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Inventors:
TAKAYAMA YOSHINORI (JP)
KAWASAKI HAJIME (JP)
KOMA TAKUMA (JP)
KOMATSU TAKUYA (JP)
KAWASAKI HAJIME (JP)
KOMA TAKUMA (JP)
KOMATSU TAKUYA (JP)
Application Number:
PCT/JP2021/020407
Publication Date:
December 09, 2021
Filing Date:
May 28, 2021
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
International Classes:
C04B7/44; B01D53/14; B01D53/62; C07B61/00; C07C1/12; C07C9/04; C10L3/08; F27D17/00
Domestic Patent References:
| WO2015055349A1 | 2015-04-23 |
Foreign References:
| JPS60112651A | 1985-06-19 | |||
| JP2015030653A | 2015-02-16 |
Other References:
BAIER JENS, SCHNEIDER GABRIEL, HEEL ANDRE: "A Cost Estimation for CO2 Reduction and Reuse by Methanation from Cement Industry Sources in Switzerland", FRONTIERS IN ENERGY RESEARCH, vol. 6, 28 February 2018 (2018-02-28), pages 1 - 9, XP055843333, DOI: 10.3389/fenrg.2018.00005
Attorney, Agent or Firm:
AOYAMA, Masakazu (JP)
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