US PATENT SUBCLASS 208 / 165
.~.~ Gravitating compact beds

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}
165.~.~ Gravitating compact beds {7}
166  DF  .~.~.~> Liquid feeding {1}
168  DF  .~.~.~> Solids-vapor disengagement
169  DF  .~.~.~> Plural zones of similar function (same chamber)
170  DF  .~.~.~> Size stratification prevention
171  DF  .~.~.~> Uniform solids withdrawal
172  DF  .~.~.~> Preheating or quenching with solids
173  DF  .~.~.~> Solids transferring {1}

DEFINITION

Classification: 208/165

(under subclass 146) Processes wherein solids move downwardly by gravity as a relatively compact mass, the particles being in contact with each other and wherein the compactness is not disrupted by the contacting fluids.

SEE OR SEARCH CLASS

502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making, for a composition comprising a catalyst or sorbent, per se, and see especially

20+, for a regeneration process which may include treatment by a contacting fluid.