Reformer tube heat transfer device

Details Reformer tube heat transfer device Reformer tube heat transfer device

1988-03-21

1989-07-11

Marcus, Michael S.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including heat exchanger for reaction chamber or reactants...

422200, 422 20, 422197, 422312, 165156, 138 38, F28D 710, F28D 2100

Patent

active

048470511

ABSTRACT:
Heat is more efficiently transferred to the catalyst tubes in a fuel cell power plant reformer by mounting sleeves about the individual catalyst tubes. The sleeves define helical hot gas flow paths on the outside of the catalyst tubes. Adjacent flow paths are separated from each other by arcuate ribs between the tubes and sleeves that provide line contact with the outer surface of the tubes for improved heat transfer. The ribs may be formed with circular rods attached to the tubes or sleeves, or by helical grooves with semi-circular configurations formed in the sleeves. Approximately fifty percent greater heat transfer can be achieved using the line contact ribs to form the hot gas flow paths. The sleeves, tubes and ribs are all made of metal.

REFERENCES:
patent: 2409304 (1943-04-01), Morrison
patent: 2900168 (1959-08-01), Nyborg
patent: 3464450 (1969-09-01), Steffenini
patent: 3730229 (1973-05-01), D'Onofrio
patent: 4111402 (1978-09-01), Barbini
patent: 4402361 (1983-09-01), Dominguez
patent: 4559999 (1985-12-01), Servas et al.
patent: 4661323 (1987-04-01), Olesen

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