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1. (WO2017151767) METHOD FOR RECOVERING ALKALI METAL FROM HYDROCARBON FEEDSTOCKS TREATED WITH ALKALI METAL

Pub. No.:    WO/2017/151767    International Application No.:    PCT/US2017/020199
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Mar 02 00:59:59 CET 2017
IPC: C10G 31/08
C01B 17/22
C10G 17/02
C10G 19/00
C10G 53/10
C10G 53/12
C10G 19/08
Applicants: FIELD UPGRADING LIMITED
Inventors: GORDON, John Howard
KILLPACK, Jeffrey Dean
Title: METHOD FOR RECOVERING ALKALI METAL FROM HYDROCARBON FEEDSTOCKS TREATED WITH ALKALI METAL
Abstract:
A method for removing alkali metal from a hydrocarbon feedstock comprising alkali metal, non-alkali metal and sulfur. The method includes separating out at least a portion of any alkali metal sulfide and a portion of any non-alkali metal from the hydrocarbon feedstock. Hydrogen sulfide can be added to the remaining hydrocarbon feedstock to form alkali hydrosulfide from any alkali metal remaining in the hydrocarbon feedstock. The alkali hydrosulfide is then separated from the hydrocarbon feedstock. Alkali metal may be removed from the alkali metal sulfide separated out from the hydrocarbon feedstock. Alkali hydrosulfide may be treated to form alkali metal sulfide, and alkali metal may also be removed from the formed alkali metal sulfide.