US PATENT SUBCLASS 202 / 111
.~.~.~.~ With recuperators and regenerators


Current as of: June, 1999
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202 /   HD   DISTILLATION: APPARATUS

81  DF  APPARATUS {4}
82  DF  .~ Systems {6}
96  DF  .~.~ Thermolytic {5}
105  DF  .~.~.~ Retort {14}
111.~.~.~.~ With recuperators and regenerators


DEFINITION

Classification: 202/111

The retort system has both double and single surface air and/or gas heaters heated by the heat carried off by the products of combustion. The double-surface heaters are in this class called recuperators, the single surface, regenerators.

SEE OR SEARCH THIS CLASS, SUBCLASS:

122, 123, 130, 132, 140, 141, and indented subclasses, 146 and 148.

SEE OR SEARCH CLASS

201, Distillation: Processes, Thermolytic,

15+, for a carbonizing process including burning a product of the carbonizing step and recovering heat from a product by indirect heat exchange, and subclass 37, for a process in which externally produced combustion gases are passed through the retort.