B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
23/375
B01J 8/06 (2006.01)
Patent
CA 1207986
REACTOR FOR HETEROGENEOUS SYNTHESIS AND METHOD FOR ITS OPTIMISATION Inventors: Umberto ZARDI and Ettore COMANDINI Assignee: AMMONIA CASALE SA, Lugano, Switzerland ABSTRACT The reactor for heterogeneous synthesis, in particular for the catalytic synthesis of ammonia, methanol, and similar substances, consisting of at least an outer shell, at least an internal cartridge formed preferably of modular cartridges, each comprising a catalytic bed consisting of a granular catalyst contained between a closed lower bottom and two con- centric cylindrical walls of which the outer wall is perforated for the whole of its axial length and the inner wall has a perforated length shorter than the outer wall, so that each catalytic bed is run through by a split portion of the reaction gas in a zone with prevalently axial flow and by th? remaining split gas portion in another zone with preva- lently radial flow, the zone with prevalently axial flow of each cataly- tic bed acting also as sealing pad for reaction gas, is characterised by the fact that in the cylindrical space comprised between the inner walls of at least one of the n catalytic beds is inserted a heat exchan- ger lapped on one side by the reacted has coming directly from the relevant catalytic bed and, on the other, run through by water or other liquid fed from outside. The method is so arranged that heat is removed at a high level in situ so as to obtain at the same time the optimisation of reaction conditions and the reduction of the catalyst volume in each catalytic bed and, in addition, an even more accurate control can be made of the temperature of the gas reacted on one bed and entering the next catalytic bed, by controlling the amount of hot gas reacted on a bed sent to the exchanger associated with the same bed.
405772
Comandini Ettore
Zardi Umberto
Ammonia Casale S.a.
Mitches & Co.
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