Immobilization of vanadia deposited on sorbent materials during visbreaking treatment of carbo-metallic oils
First Claim
1. A method for demetallizng and decarbonizing high boiling portions of crude oils comprising metal contaminants, and highly viscous high molecular weight hydrocarbons boiling above 1000°
- F. which comprises, contacting said high boiling portion of crude oil with solid sorbent particulate material provided with a metal additive material selected from one or more of Mg, Ca, Sr, Ba, Sc, Y, La, Ti, Ar, Hf, Nb, Ta, Mn, Ni, In, Te, Bi, and elements in the lanthanide or actinide series to form a compound with deposited vanadium and substantially immobilize flow of vanadium during high temperature use of said sorbent material, said sorbent providing a high pore volume in the range of 0.4 cc/g up to about 0.8 cc/g atelevated temperature conditions above 900°
F. and a contact time equal to or less than 5 sec. providing a vaporous product of thermal visbreaking, said conditions limiting production to lower boiling naphtha containing products, said contacting with such high pore volume sorbent material effected under conditions of sorbent to oil feed ratio for particularly imbibing metal contaminants and some high boiling highly viscous high molecular weight hydrocarbons of said crude oil at said visbreaking conditions, and recovering a vaporous product of said thermal visbreaking operation boiling up to about 1000°
F. comprising less than about 100 ppm of nickel plus vanadium.
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Abstract
A high pore volume solid sorbent material of low cracking activity and comprising a select group of metal additives to immobilize accumulated vanadium compounds deposited on the sorbent material in a heavy oil feed visbreaking zone is described and the conditions employed to effect demetallization and decarbonization of the heavy oil feed to produce vaporous products boiling up to about 1000° F. Deposition of metal contaminants within the pores of the high pore volume material is encouraged by restricting the volume of the sorbent pores filled with oil feed to within the range of 1/4 to 2/3.
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Citations
17 Claims
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1. A method for demetallizng and decarbonizing high boiling portions of crude oils comprising metal contaminants, and highly viscous high molecular weight hydrocarbons boiling above 1000°
- F. which comprises, contacting said high boiling portion of crude oil with solid sorbent particulate material provided with a metal additive material selected from one or more of Mg, Ca, Sr, Ba, Sc, Y, La, Ti, Ar, Hf, Nb, Ta, Mn, Ni, In, Te, Bi, and elements in the lanthanide or actinide series to form a compound with deposited vanadium and substantially immobilize flow of vanadium during high temperature use of said sorbent material, said sorbent providing a high pore volume in the range of 0.4 cc/g up to about 0.8 cc/g at
elevated temperature conditions above 900°
F. and a contact time equal to or less than 5 sec. providing a vaporous product of thermal visbreaking, said conditions limiting production to lower boiling naphtha containing products, said contacting with such high pore volume sorbent material effected under conditions of sorbent to oil feed ratio for particularly imbibing metal contaminants and some high boiling highly viscous high molecular weight hydrocarbons of said crude oil at said visbreaking conditions, and recovering a vaporous product of said thermal visbreaking operation boiling up to about 1000°
F. comprising less than about 100 ppm of nickel plus vanadium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- F. which comprises, contacting said high boiling portion of crude oil with solid sorbent particulate material provided with a metal additive material selected from one or more of Mg, Ca, Sr, Ba, Sc, Y, La, Ti, Ar, Hf, Nb, Ta, Mn, Ni, In, Te, Bi, and elements in the lanthanide or actinide series to form a compound with deposited vanadium and substantially immobilize flow of vanadium during high temperature use of said sorbent material, said sorbent providing a high pore volume in the range of 0.4 cc/g up to about 0.8 cc/g at
Specification