Convective heater

Details Convective heater Convective heater

1981-05-29

1983-12-27

Yuen, Henry C.

Liquid heaters and vaporizers

Industrial

Waste heat

122 6A, 122 20B, 165110, F22D 100

Patent

active

044224117

ABSTRACT:
A convective heater for heating fluids such as a coal slurry is constructed of a tube circuit arrangement which obtains an optimum temperature distribution to give a relatively constant slurry film temperature. The heater is constructed to divide the heating gas flow into two equal paths and the tube circuit for the slurry is arranged to provide a mixed flow configuration whereby the slurry passes through the two heating gas paths in successive co-current, counter-current and co-current flow relative to the heating gas flow. This arrangement permits the utilization of minimum surface area for a given maximum film temperature of the slurry consistent with the prevention of coke formation.

REFERENCES:
patent: 2239895 (1941-04-01), Kuhner
patent: 2955807 (1960-10-01), Riley et al.
patent: 3406664 (1968-10-01), Blaskowski
patent: 3841270 (1974-10-01), Sokolowski
patent: 3842904 (1974-10-01), Gardenier
patent: 4143817 (1979-03-01), Oliver
patent: 4201191 (1980-05-01), Zink et al.
patent: 4325328 (1982-04-01), Miszak

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