US 2019/0071351 A1

Process and plant for manufacturing cement in the oxyfuel mode

(22) 31.03.2017

(43) 07.03.2019

(57) Process for operating a cement or lime plant comprising a cement or lime kiln and a calciner, wherein heat is generated by combustion of a fuel in the kiln and/or calciner, wherein a gas fed to the kiln and the calciner or to the calciner for combustion of the fuel contains an oxygen rich exhaust gas from a bioreactor containing photoautotrophic organisms and wherein the plant is preferably operated in the oxyfuel mode by using exhaust gas from the kiln and/or calciner together with the oxygen from the bioreactor as the gas fed to the kiln and/or calciner for combustion of the fuel.

(71) HeidelbergCement AG, Heidelberg (DE)

(73) HeidelbergCement AG, Heidelberg (DE)

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