US PATENT SUBCLASS 208 / 161
.~.~.~ Separation of entrained fines from effluents

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}
161.~.~.~ Separation of entrained fines from effluents {1}
162  DF  .~.~.~.~> In presence of a liquid

DEFINITION

Classification: 208/161

(under subclass 153) Processes which include a specifically recited step of removing finely divided solids from the effluent gas from the reaction zone.

(1) Note. Particles of 20 microns in diameter and less are considered fines for classification in this subclass. Processes wherein the separation of fines is (1) claimed broadly by name only or (2) recites broadly the use of centrifugal force or of a "cyclone" are not classified herein unless the separated fines are returned other than by gravity

to the zone from which the effluent comes.