Abrégé

Process for decarbonation of limestone, dolomite or other carbonated materials and hydration of said decarbonated limestone, dolomite or other carbonated materials, said process comprising the following steps: heating particles of carbonated materials (6) in a reactor (8) of a first circuit (2); conveying said particles of carbonated materials (6) by a first entraining gas (4); transferring the decarbonated particles (16) to a second circuit (12), in which a second gas (14) circulates, said circuit (12) comprising a hydration section (23). hydrating the decarbonated particles (16); transferring at least a portion of the heat generated by the hydration of the decarbonated particles (16) to the second gas (14) being substantially free of carbon dioxide; wherein the first (2) and second circuits (12) are separated by first selective separation means (20) allowing the passage of solids while substantially preventing the passage of the gases (4, 14).

Classes IPC  ?

• C04B 2/04 - Extinction
• C04B 2/10 - Préchauffage, cuisson, calcination ou refroidissement

Abrégé

Process for decarbonation of limestone, dolomite or other carbonated materials and hydration of said decarbonated limestone, dolomite or other carbonated materials, said process comprising the following steps: - heating particles of carbonated materials (6) in a reactor (8) of a first circuit (2); - conveying said particles of carbonated materials (6) by a first entraining gas (4); - transferring the decarbonated particles (16) to a second circuit (12), in which a second gas (14) circulates, said circuit (12) comprising a hydration section (23); - hydrating the decarbonated particles (16); - transferring at least a portion of the heat generated by the hydration of the decarbonated particles (16) to the second gas (14) being substantially free of carbon dioxide; wherein the first (2) and second circuits (12) are separated by first selective separation means (20) allowing the passage of solids while substantially preventing the passage of the gases (4, 14).

Classes IPC  ?

• C04B 2/04 - Extinction
• C04B 2/10 - Préchauffage, cuisson, calcination ou refroidissement

Abrégé

The present invention relates to a process for the decarbonation of limestone, dolomite or other carbonated materials, comprising the following steps: - heating particles of carbonated materials (6) in a reactor (8) of a first circuit (2) to obtain decarbonated particles (16); - conveying particles of carbonated materials (6) by a first entraining gas (4) in the first circuit (2) for preheating, said gas (4) comprising said carbon dioxide, said gas composition being substantially free of nitrogen; - separating the carbonated particles (6) from a first entraining gas (4) flow; - transferring the decarbonated particles (16) to a cooling section (22) of a second circuit (12) comprising a second entraining gas (14) in which the conveyed decarbonated particles (16) release a portion of their thermal energy; - separating the decarbonated particles (16) from a second entraining gas (14) flow; wherein said second entraining gas (14) is substantially free of carbon dioxide, and the device thereof.

Classes IPC  ?

• C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux

Produits et services

Building construction; repair and installation services related to buildings and industrial equipment; construction consultancy; machinery installation, maintenance and repair; quarrying services. Scientific and technological services and research and design relating thereto; industrial analysis and research services; design and development of computer hardware and software for industrial installations and industrial equipment; engineering; mechanical research; consultancy on the design and development of computer hardware for industrial equipment and industrial equipment; conducting technical project studies.

Abrégé

The present invention relates to a process for the decarbonation of limestone, dolomite or other carbonated materials, comprising the following steps: - heating particles of carbonated materials (6) in a reactor (8) of a first circuit (2) to obtain decarbonated particles (16); - conveying particles of carbonated materials (6) by a first entraining gas (4) in the first circuit (2) for preheating, said gas (4) comprising said carbon dioxide, said gas composition being substantially free of nitrogen; - separating the carbonated particles (6) from a first entraining gas (4) flow; - transferring the decarbonated particles (16) to a cooling section (22) of a second circuit (12) comprising a second entraining gas (14) in which the conveyed decarbonated particles (16) release a portion of their thermal energy; - separating the decarbonated particles (16) from a second entraining gas (14) flow; wherein said second entraining gas (14) is substantially free of carbon dioxide, and the device thereof.

Classes IPC  ?

• C04B 2/12 - Préchauffage, cuisson, calcination ou refroidissement dans des fours à cuve ou dans des fours verticaux