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Immobilization of vanadia deposited on sorbent materials during visbreaking treatment of carbo-metallic oils

  • US 4,469,588 A
  • Filed: 09/29/1982
  • Issued: 09/04/1984
  • Est. Priority Date: 03/30/1981
  • Status: Expired due to Fees
First Claim
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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 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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