Mineral oils: processes and products – Chemical conversion of hydrocarbons – Solids contacting and mixing
Reexamination Certificate
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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Beech James H.
Fung Shun Chong
Janssen Marcel Johannes
Loezos Peter N.
Vaughn Stephen Neil
ExxonMobil Chemical Patents Inc.
Nguyen Tam M.
Weisberg David M.
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