Ceramic packing with channels for thermal and catalytic beds

Details Ceramic packing with channels for thermal and catalytic beds Ceramic packing with channels for thermal and catalytic beds

B - Operations, Transporting

01

J

B01J 19/32 (2006.01) A01K 67/027 (2006.01) B01J 10/00 (2006.01) B01J 12/00 (2006.01) B01J 14/00 (2006.01) B01J 15/00 (2006.01) B01J 16/00 (2006.01) B01J 19/24 (2006.01) B01J 35/02 (2006.01) B01J 35/04 (2006.01) C04B 38/00 (2006.01) C07K 14/715 (2006.01) F27D 17/00 (2006.01) F28D 17/02 (2006.01) A61K 38/00 (2006.01) A61K 48/00 (2006.01)

Patent

CA 2239195

A ceramic packing clement (500) is formed from a stack of ceramic plates (502) having parallel ribs (504) forming parallel grooves therebetween. The grooves are formed into channels by being contacted with the surface of an opposed plate. The ribs (504) may engage the end surfaces of ribs on an adjacent plate or may be interleaved with the ribs (504) of an opposed plate to form smaller channels. The plates (502) are adhered to each other by firing a stack of plates (502) in the green state or by adhering cured plates (502) by means of an inorganic adhesive such as sodium silicate. Pressure drop and cracking may be reduced, mass transfer and heat efficiencies increased by enlarging the inlets (542) to the channels and by providing perforations through the plates between the ribs (504). Elements may be preassembled into larger units before placement in a column by wrapping metal bands around an assembly of elements.

Un garnissage céramique (500) est constitué par une pile de plaques de céramique (502) présentant des nervures parallèles (504) qui forment entre elles des rainures parallèles. On constitue des canaux avec ces rainures en les appliquant contre la surface d'une plaque opposée. Les nervures (504) peuvent être en contact avec les surfaces d'extrémités des nervures d'une plaque voisine ou elles peuvent être intercalées avec celles (504) d'une plaque opposée pour former des canaux plus petits. On fait adhérer les plaques (502) les unes aux autres en en cuisant une pile crue ou en collant des plaques cuites (502) au moyen d'un adhésif inorganique tel que le silicate de sodium. On peut éventuellement réduire la chute de pression et la fissuration, augmenter le transfert de masse et le rendement thermique en agrandissant les entrées (542) des canaux et en pratiquant des perforations à travers les plaques, entre les nervures (504). Des éléments peuvent être préassemblés en unités plus grandes, avant leur mise en place dans une colonne, grâce à l'enroulement de rubans métalliques autour d'un assemblage d'éléments.

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