Gas-solid contacting device

A device for processing a flow of particulate material by contact with a gas flow, comprising

• a housing defining a processing chamber and having a gas inlet for introducing a gas flow in a plenum of the processing chamber,
• wherein the processing chamber comprises
• the plenum, arranged at the lower part of the processing chamber,
• a contact zone, arranged above the plenum, for contacting the flow of particulate material with the gas flow,
• wherein the plenum and contact zone are separated by a gas distribution plate,
• wherein the contact zone comprises a contact path for contact between the flow of particulate material and the gas flow, the contact zone having multiple cylindrical partitions upstanding from the gas distribution plate dividing an inner section of the contact path from an adjacent annular outer section, wherein each partition is provided with a transfer opening configured to allow passage of the particulate material from the inner section to the adjacent annular outer section of the contact path separated by the respective partition, wherein the inner section of the contact path is an annular inner section, and wherein the transfer opening of an inward partition and the transfer opening in an adjacent outward partition are at least 270° apart as seen in the particulate material displacement direction in the annular section of the contact path between the adjacent partitions,
• wherein the gas distribution plate is provided with openings configured to allow passage of the gas flow from the plenum to the contact zone in an obliquely upward direction to establish a displacement of particulate material in a displacement direction along the contact path in the contact zone,
• the housing further comprising an inlet for supplying particulate material to the inner section) of the contact path at a supply position upstream of the transfer opening in an adjacent partition as seen in the particulate material displacement direction in the inner section of the contact path;
• wherein the supply position in the inner section of the contact path and the transfer opening in the adjacent partition are at least 270° apart as seen in the particulate material displacement direction in the inner section of the contact path, and an outlet for discharging processed particulate material from the annular outer section of the contact path at a discharge position downstream of the transfer opening in an adjacent partition as seen in the particulate material displacement direction in the annular outer section of the contact path, wherein the discharge position in the annular outer section of the contact path and the transfer opening in the adjacent partition are at least 270° apart as seen in the particulate material displacement direction in the annular outer section of the contact path.