US PATENT SUBCLASS 96 / 108
SOLID SORBENT APPARATUS

Current as of: June, 1999
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96 /   HD   GAS SEPARATION: APPARATUS

108SOLID SORBENT APPARATUS {14}
109  DF  .~> With control means responsive to sensed condition {4}
115  DF  .~> With programmed, cyclic, or time responsive control means {2}
117.5  DF  .~> With indicating means (e.g., color change indicator, etc.)
118  DF  .~> Soluble or deliquescent type (e.g., calcium chloride, etc.) {1}
121  DF  .~> Plural solid sorbent beds {8}
134  DF  .~> Plural diverse separating means {6}
143  DF  .~> With means regenerating solid sorbent {2}
147  DF  .~> Having mountable casing {1}
149  DF  .~> With means to compress or compact solid sorbent bed
150  DF  .~> Movable solid sorbent bed (e.g., fluidized bed, etc.)
151  DF  .~> Including means to access or replace solid sorbent
152  DF  .~> Including baffle for modifying gas flow (e.g., imbedded in solid sorbent, etc.)
153  DF  .~> Dispersed or impregnated solid sorbent bed
154  DF  .~> Layered or laminated (e.g., solid sorbent on support material, etc.)

DEFINITION

Classification: 96/108

SOLID SORBENT APPARATUS:

(under the class definition) Apparatus in which a solid sorbent (e.g., particulate or fibrous mass of solids, etc.) is used to retain on its internal or external surfaces a constituent of the fluid mixture passing in contact therewith.

(1) Note. A solid sorbent is a solid material which separates one or more constituents (e.g., gas, vapor, etc.) from a fluid mixture containing such constituents in a "quasi-chemical" manner. The action in most instances is that of selective retention (i.e., the sorbent removes only that part of the fluid mixture for which it has the greatest affinity). The retained constituent cannot be removed by shaking, brushing, or similar mechanical action, but can generally be removed by heating, pressure reduction, or use of a stripping or denuding fluid.

A filter (e.g., particulate solids, etc.) has no particular "chemical" affinity for a constituent of a fluid mixture. The separation in the case of a filter depends on a mechanical entrapment of solid particles because of their relatively large size compared with the interstices or spaces between individual elements of the filter. The retained particles can be removed by brushing, wiping, shaking, or similar mechanical action.

(2) Note. "Absorption" is the holding of a constituent by cohesion or capillary action in the pores of a solid. "Adsorption" is the ability of a sorbent to hold or concentrate gases, liquids, or dissolved substances upon its surface.

(3) Note. "Gettering" or use of a "getter" material may involve one or more different processes to remove an undesired constituent from a gaseous mixture, usually within an enclosed space, by sorption, chemical reaction, etc. Class 96 provides for getter apparatus under the class definition except where such apparatus is part of a more comprehensive apparatus properly classified elsewhere. This subclass provides for getter apparatus of the solid sorbent type only. See the search class notes below and the class definition for class lines between Class 96 and other applicable classes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

101+, for chromatography type apparatus which contains or utilizes a solid sorbent. SEE OR SEARCH CLASS

62, Refrigeration, for processes and apparatus with solid desiccant disposed in a refrigeration system.

95, Gas Separation: Processes,

82+, and 90+ for corresponding chromatography and solid sorption processes, respectively.

123, Internal-Combustion Engines,

519+, for an internal-combustion engine including a charge-forming device having a fuel vapor recovery and storage system wherein the fuel vapor storage system is an adsorbent canister.

206, Special Receptacle or Package,

.7, for receptacles and packages for storing gas containing an adsorbent in which the gas is stored and subclass 204 for receptacles and packages including means for removing water or water vapor from the atmosphere within a container or the surface of container content.

210, Liquid Purification or Separation,

660+, for ion exchange or selective sorption processes; subclasses 150+ for apparatus for liquid purification or separation consisting of solid contact means to increase the surface area of a liquid in a gas-liquid contact device whereby the contact is enhanced; and subclasses 263+ for liquid purification or separation apparatus of the particulate material type (e.g., ion exchange or sand bed, etc.).

252, Compositions,

181.1+, for gas getter compositions for electric lamps, electric space discharge devices, and similar devices and subclass 184 for absorptive or bindive and chemically yieldive compositions under the class definition. 313, Electric Lamp and Discharge Devices,

481, for cathode ray tube envelopes with getter or gas and subclasses 547+ and 553+ for electric lamp or discharge devices with getter means.

417, Pumps,

48+, for electrical or getter type pump apparatus.

420, Alloys or Metallic Compositions, for metal alloys or compositions used for gas (e.g., hydrogen, etc.) storage.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

129+, for chemical reactors, particularly subclasses 177+ for particulate catalyst beds and other solid, extended surface fluid contact reaction means.

423, Chemistry of Inorganic Compounds, for processes of chemical storage and release (e.g.,

658.2, for direct decomposition of a binary compound containing hydrogen, etc.).

445, Electric Lamp or Space Discharge Component or Device Manufacturing,

53+, for manufacturing processes including evacuating, degasifying, or getter or fluent material introduction, particularly subclass 55 for gettering. 502, Catalyst, Solid Sorbent, or Support Therefor: Product or Process of Making, for solid sorbent, per se; and

20+, for the regeneration of sorbents. See section III of this class for the line between these two classes.