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US 12,616,933 B2Granted
Hot circulation enhancement in amine units
AssigneeSaudi Arabian Oil Company
InventorYousef Nassir Alfnais
Life of this patent
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Abstract
A method for preparing a gas sweetening system for less shutdown time is provided. The method includes stopping a sour gas feed to a gas sweetening system, and raising the set point for a temperature of a lean amine cooler to about 150° F. The H2S concentration in a lean amine is monitored. The preparation of the gas sweetening system for maintenance is completed when the H2S concentration reaches a target value.
Claims9
A method for preparing a gas sweetening system for maintenance, comprising:
- stopping a sour gas feed to a gas sweetening system;
- raising the set point for a temperature of a lean amine cooler to about 150° F.;
- monitoring an H2S concentration in a lean amine;
- and
- completing the preparation of the gas sweetening system for maintenance when the H2S concentration reaches a target value.
2 more elements
Dependencies are inferred from the claim text.