Apparatus and process for isomerizing a hydrocarbon stream

Details Apparatus and process for isomerizing a hydrocarbon stream Apparatus and process for isomerizing a hydrocarbon stream

2009-11-17

2011-11-22

Griffin, Walter (Department: 1774)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including plural reaction stages

C095S041000, C095S095000, C095S096000, C095S099000, C095S117000, C095S121000, C095S126000, C585S253000, C585S734000

Reexamination Certificate

active

08062613

ABSTRACT:
An apparatus and process for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon which includes a first drier and a second drier; and a reaction zone communicating with at least the first drier. The first drier operates at a first condition to dry the reactant and the second drier operates at a second condition during regeneration. The used regenerant remaining in the second drier after regeneration can (1) pass through a vent-to-flare assembly in a batch-wise manner; (2) pass through a downflow-depressure-to-low-pressure-device assembly in a batch-wise manner; (3) pass through a cross-over piping purge assembly to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation; or any combination of (1) (2) and/or (3) to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation.

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