Method of shutting down a reaction system

Details Method of shutting down a reaction system Method of shutting down a reaction system

2007-10-02

2007-10-02

Nguyen, Tam M. (Department: 1764)

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

C208S106000, C208S113000

Reexamination Certificate

active

10641447

ABSTRACT:
The invention is directed to methods of shutting down reaction systems. The reaction systems are those that use catalysts that comprise molecular sieves, particularly metalloaluminophosphate molecular sieves, especially metalloaluminophosphate molecular sieves which are susceptible to loss of catalytic activity due to contact with water molecules. The methods provide appropriate mechanisms of stopping feed to the reactor and unloading catalyst to protect against loss of catalytic activity that can occur due to contact with water molecules.

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