US PATENT SUBCLASS 502 / 45
.~.~.~ Moving bed (e.g., vertically or horizontally, etc., moving bulk material)

Current as of: June, 1999
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502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

20  DF  REGENERATING OR REHABILITATING CATALYST OR SORBENT {4}
34  DF  .~ Gas or vapor treating {5}
38  DF  .~.~ Treating with free oxygen containing gas {8}
45.~.~.~ Moving bed (e.g., vertically or horizontally, etc., moving bulk material) {3}
46  DF  .~.~.~.~> Generally concurrent flow of oxygen containing gas and material
47  DF  .~.~.~.~> Generally countercurrent flow of oxygen containing gas and material
48  DF  .~.~.~.~> Generally transverse (i.e., lateral) flow of oxygen containing gas relative to material

DEFINITION

Classification: 502/45

Moving bed (e.g., vertically or horizontally, etc., moving bulk material):

(under subclass 38) Process in which the spent material is contacted by the gas while progressing or being carried as a relatively compact mass.

(1) Note. The moving bed may be supported on a belt or be a continuous flow of material through a zone and includes a rising column of material supported by sequentially added catalyst or sorbent. Additionally rotary motion is included, as in a rotary kiln or screw conveyor.

(2) Note. Disclosures for this subclass will either be silent as to relative movement of gas and spent material or indicate all such relative movement to be equivalent. Specified relative movement between gas and material is provided for in an indented subclass.