Convective heater
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United States of America Patent
Stats
-
Mar 18, 1986
Grant Date -
N/A
app pub date -
Jan 27, 1984
filing date -
Jan 27, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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