Abstract Described is a process for removing arsenic, vanadium, and/or nickel from petroliferous derived liquids by contacting said liquid at an elevated temperature with a divinylbenzene-crosslinked polystyrene having catechol ligands anchored thereon. For vanadium and nickel removal an amine, preferably a diamine is included. Also, described is a process for regenerating spent catecholated polystyrene by removal of the arsenic, vanadium, and/or nickel bound to it from contacting petroliferous liquid as described above and involves: treating the spent polymer containing any vanadium and/or nickel with an aqueous acid to achieve an acid pH; and, separating the solids from the liquid; and then treating said spent catecholated polystyrene, at a temperature in the range of about 20 DEG to 100 DEG C. with an aqueous solution of at least one carbonate and/or bicarbonate of ammonium, alkali and alkaline earth metals, said solution having a pH between about 8 and 10; and, separating the solids and liquids from each other. Preferably the regeneration treatment of arsenic containing catecholated polymer is in two steps wherein the first step is carried out with an aqueous alcoholic carbonate solution containing lower alkyl alcohol, and, the steps are repeated using a bicarbonate.
Inventors
👤 Richard H. Fish
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-04 07:04
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/003
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
57 words
Process comprising removing contaminant containing at least one of the group of arsenic, vanadium and nickel from petroliferous liquids by contacting said liquid at an elevated temperature of at least about 20° C. with a polystyrene-divinylbenzene polymer crosslinked with up to about 20% divinylbenzene and which polymer contains up to about 30% by weight of catechol ligands.
Claim 2
Dependent Claim
57 words
Process comprising removing contaminant containing at least one of the group of arsenic, vanadium and nickel from petroliferous liquids by contacting said liquid at an elevated temperature of at least about 20° C. with a polystyrene-divinylbenzene polymer crosslinked with up to about 20% divinylbenzene and which polymer contains up to about 30% by weight of catechol ligands.
Claim 3
Dependent Claim
16 words
Process according to claim 1 wherein said contacting takes place in the presence of an amine.
Claim 4
Dependent Claim
16 words
Process according to claim 2 wherein said contacting takes place in the presence of a diamine.
Claim 5
Dependent Claim
19 words
Process according to claim 1 wherein said elevated temperature is in the range of about 35° to 140° C.
Claim 6
Dependent Claim
11 words
Process according to claim 1 wherein the pressure is substantially atmospheric.
Claim 7
Dependent Claim
17 words
Process according to claim 1 wherein said elevated temperature is in the range of about 60°-80° C.
Claim 8
Dependent Claim
21 words
Process according to claim 4 wherein said catecholated polymer contains about 2 to 10% of catechol ligands anchored to said polymer.
Claim 9
Dependent Claim
11 words
Process according to claim 7 wherein said amine is a diamine.
Claim 10
Dependent Claim
10 words
Process according to claim 7 wherein said amine is bipyridine.
Claim 11
Dependent Claim
12 words
Process according to claim 1 wherein said petroliferous liquid is shale oil.
Claim 12
Dependent Claim
13 words
Process according to claim 1 wherein said petroliferous liquid is heavy petroleum oil.