US PATENT SUBCLASS 208 / 159
.~.~.~ With temperature regulation

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
146  DF  .~ Solids contacting and mixing {8}
153  DF  .~.~ Suspension system {7}
159.~.~.~ With temperature regulation {1}
160  DF  .~.~.~.~> By solids circulation to external heat exchange and return to same zone

DEFINITION

Classification: 208/159

(under subclass 153) Processes involving the control of the temperature during the fluid-solid contacting over and above that caused by the normal heat transfer properties of the moving solid bodies as they circulate in and through the system.

(1) Note. This subclass contains, for example, processes of regulating temperature in mineral oil conversion in a suspension system wherein heating and cooling occurs by indirect heat exchange or by some specific manipulation of the circulating solids to cause such change in the temperature.

(2) Note. Preheating the feed or quenching the products of the reaction are not regarded as temperature controls within the scope of this subclass.