公开(公告)号：US20240228373A1

公开(公告)日：2024-07-11

申请号：US18560332

申请日：2022-05-10

Applicant: TECFORLIME

Inventor： Etienne THIBEAUMONT ,  Alex AUBERT ,  Pierre-Olivier CAMBIER ,  Charles ROBIN

IPC: C04B2/12

CPC classification number: C04B2/12

Abstract: The present disclosure relates to a decarbonation process of carbonated materials, in particular limestone and dolomitic limestone, with CO2 recovery in a multi-shaft vertical kiln (MSVK) comprising a first and a second shaft with preheating, heating and cooling zones and a cross-over channel between each shaft. The method includes alternately heating carbonated materials by a combustion of at least one fuel with at least one comburent, up to a temperature range in which carbon dioxide of the carbonated materials is released, the combustion of the fuel and the decarbonation generating an exhaust gas. Decarbonated materials are cooled in the cooling zones with one or more cooling streams. The process further includes extracting the exhaust gas from the multi-shaft vertical kiln and feeding a buffer with the extracted exhaust gas.

公开(公告)号：US20240239706A1

公开(公告)日：2024-07-18

申请号：US18560364

申请日：2022-05-10

Applicant: TECFORLIME

Inventor： Etienne THIBEAUMONT ,  Alex AUBERT ,  Pierre-Olivier CAMBIER ,  Charles ROBIN

IPC: C04B2/12 ,  F27B1/00 ,  F27D9/00 ,  F27D17/00

CPC classification number: C04B2/12 ,  F27B1/005 ,  F27D9/00 ,  F27D17/001 ,  F27D2009/0075 ,  F27M2003/03

Abstract: The present disclosure relates to a decarbonation process of carbonated materials, in particular limestone and dolomitic limestone, with CO2 recovery in a multi-shaft vertical kiln (MSVK) comprising a first and a second shaft with preheating, heating and cooling zones and a cross-over channel between each shaft. The method includes alternately heating carbonated materials by a combustion of at least one fuel with at least one comburent, up to a temperature range in which carbon dioxide of the carbonated materials is released, the combustion of the fuel and the decarbonation generating an exhaust gas. Decarbonated materials are cooled in the cooling zones with one or more cooling streams. The process further includes extracting the exhaust gas from the multi-shaft vertical kiln and feeding a buffer with the extracted exhaust gas.

公开(公告)号：US20240254043A1

公开(公告)日：2024-08-01

申请号：US18560357

申请日：2022-05-10

Applicant: TECFORLIME

Inventor： Etienne THIBEAUMONT ,  Alex AUBERT ,  Pierre-Olivier CAMBIER ,  Charles ROBIN

IPC: C04B2/12 ,  B01D53/14 ,  F27B1/00 ,  F27B1/04 ,  F27B1/24 ,  F27D17/00

CPC classification number: C04B2/12 ,  B01D53/1475 ,  F27B1/005 ,  F27B1/04 ,  F27B1/24 ,  F27D17/001 ,  B01D2252/103 ,  B01D2257/504 ,  F27M2003/03

Abstract: The present disclosure discloses a decarbonation process of limestone and dolomitic limestone with CO2 recovery in a multi-shaft vertical kiln (MSVK) having three shafts with preheating, heating and cooling zones and a cross-over channel between each shaft. The method includes alternately heating carbonated materials by a combustion of a fuel with a comburent up to a temperature range in which carbon dioxide of the carbonated materials is released, the combustion of the fuel and the decarbonation generating an exhaust gas, the decarbonated materials being cooled in the cooling zones with cooling stream(s). Mixing between the exhaust gas and the one or more cooling streams is minimized. The decarbonated materials in two or three of the shafts are cooled with the cooling streams while a supply of the fuel in each shaft is stopped.

公开(公告)号：US20240018037A1

公开(公告)日：2024-01-18

申请号：US18043876

申请日：2021-09-01

Applicant: TECFORLIME SA ,  CONSEJO SUPERIOR DE INVESTIGACIONES CIENTÍFICAS (CSIC)

Inventor： Charles ROBIN ,  Pierre-Olivier CAMBIER ,  Steven Bruce GUTHRIE ,  Juan Carlos ABANADES GARCIA

IPC: C04B2/12 ,  C04B2/10 ,  F27B1/00 ,  F27B1/18 ,  F27B1/22

CPC classification number: C04B2/12 ,  C04B2/102 ,  F27B1/005 ,  F27B1/18 ,  F27B1/22

Abstract: The present disclosure relates to a process for the decarbonation of limestone, dolomite or other carbonated materials. The process may include heating particles of carbonated materials in a reactor of a first circuit to obtain decarbonated particles. Particles of carbonated materials are conveyed by a first entraining gas in the first circuit for preheating. The gas includes the carbon dioxide, the gas composition being substantially free of nitrogen. The carbonated particles are separated from a first entraining gas flow. The decarbonated particles are transferred to a cooling section of a second circuit having a second entraining gas in which the conveyed decarbonated particles release a portion of their thermal energy. The decarbonated particles are separated from a second entraining gas flow. The second entraining gas is substantially free of carbon dioxide.