US PATENT SUBCLASS 585 / 634
.~ With heat conservation or using solid or molten inert heat carrier, e.g., regenerative furnace, etc.

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

500  DF  UNSATURATED COMPOUND SYNTHESIS {14}
634.~ With heat conservation or using solid or molten inert heat carrier, e.g., regenerative furnace, etc. {1}
635  DF  .~.~> With carrier movement through reaction zone or use in quenching

DEFINITION

Classification: 585/634

With heat conservation or using solid or molten inert heat carrier, e.g., regenerative furnace, etc.:

(under subclass 500) Subject matter wherein a synthesis process includes the withdrawal of heat from an exothermic part of the process, e.g., catalyst regeneration, quenching of reaction products, etc., and transfer of this heat to an endothermic part of the process, e.g., feed-stream preheating, dehydrogenation, etc., or in which heat is conveyed to an endothermic part of the process by preheating a solid or melted solid.

SEE OR SEARCH THIS CLASS, SUBCLASS:

402, 602, 616, and 910, for heat conservation in other hydrocarbon syntheses.