Device for performing catalytic endothermic reactions

Details Device for performing catalytic endothermic reactions Device for performing catalytic endothermic reactions

1974-03-04

1976-01-27

Scovronek, Joseph

Chemistry: physical processes

Physical processes

Crystallization

23288M, 23288K, B01J 302, B01J 304, B01J 806

Patent

active

039352250

ABSTRACT:
A device for performing catalytic endothermic reactions which comprises a vessel having a heat exchanger provided with cooling tubes which extend through an outer tubesheet of the heat exchanger. These tubes are sealed against the outer tubesheet of the heat exchanger, and are connected rigidly to the inner tubesheet. Reaction tubes are provided with catalyst support grids, and the sections of these tubes below the grids are of a length that is at least equal to the diameter of the respective tubes. Downstream of the support grids, the process gas discharge tubes extend centrally through the catalyst-free portions of the reaction tubes and are spaced from the inner walls of the cooling tubes. The spaces between the process gas discharge tubes and the reaction tubes are filled with insulating material. The process gas discharge tubes, which are disposed within the cooling tubes, may extend to or beyond the outer tubesheets of the heat exchanger. The wall thickness of the process gas tubes below the catalyst support grids may be decreased in cross section, thereby decreasing the heat flux to the inner tubesheet.

REFERENCES:
patent: 1605647 (1926-11-01), Claude
patent: 3147084 (1964-09-01), Franzen et al.
patent: 3539304 (1970-11-01), Mevenkamp et al.
patent: 3600141 (1971-08-01), Mevenkamp et al.
patent: 3607125 (1971-09-01), Kydd

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