US PATENT SUBCLASS 202 / 150
.~.~.~.~ Preheating

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}
150.~.~.~.~ Preheating

DEFINITION

Classification: 202/150

The retort has means for preheating the distilland.

SEE OR SEARCH CLASS

196, Mineral Oils: Apparatus,

134, for apparatus for vaporizing mineral oils including means for heat recovery from the vapor or residuum.

201, Distillation: Processes, Thermolytic,

13+, for a thermolytic distillation process including recovering heat from a product by indirect heat exchange.

203, Distillation: Processes, Separatory,

21+, for a separatory distillation process including recovering heat by indirect heat exchange.