US PATENT SUBCLASS 208 / 148
.~.~ Combined gravitating bed and suspension zones


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}
148.~.~ Combined gravitating bed and suspension zones


DEFINITION

Classification: 208/148

(under subclass 146) Processes which include both fluid contact with a gravitating compact bed of solids and contact with solids while suspended in the fluid.

(1) Note. This subclass contains, for example, those plural stage unnamed conversions but which embody the two different types of moving system conversions or where the solids are regenerated during movement as a gravitating bed and are elevated by pneumatic lifting, the lift gas including mineral oil which is simultaneously converted in the lift zone, the solids being in a suspension state during this reaction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

174+, for gravitating compact bed type contacting including the transfer of solids between compact bed zones by entraining the solids in a suspending gas stream.