US PATENT SUBCLASS 422 / 177-- .~.~ Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc.

US PATENT SUBCLASS 422 / 177
.~.~ Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc.

Current as of: June, 1999
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422 /	HD	CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING

129	DF	CHEMICAL REACTOR {28}
168	DF	.~ Waste gas purifier {5}
177		.~.~ Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc. {4}
178	DF	.~.~.~> And contact regenerating means or means for cleaning an internal surface of the reaction chamber
179	DF	.~.~.~> Fixed bed with resilient or differential thermal expansion compensating bed support means
180	DF	.~.~.~> Unitary (i.e., nonparticulate) contact bed (e.g., monolithic catalyst bed, etc.)
181	DF	.~.~.~> Fixed annularly shaped bed of contact material and means directing gas therethrough substantially perpendicular to longitudinal axis of bed

DEFINITION

Classification: 422/177

Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc.:

(under subclass 168) Apparatus including solid extended surface, fluid contact reaction means; i.e., means providing a relatively large solid contact surface area within the reaction zone wherein the large surface area presents multiple reaction sites for contact by the reaction mixture and, thereby, enhance the rate and/or the completeness of the purification reaction, including; e.g., inert Raschig rings, particulate absorbent, etc.