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AssigneeIndian Oil Corporation Limited
InventorsArumugam Velayutham Karthikeyani, Biswanath Sarkar, Velusamy Chidambaram, Balaiah Swamy, Pankaj Kumar Kasliwal, Ganga Shanker Mishra, Mohan Prabhu Kuvettu
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The invention discloses a process for upgrading feed streams containing residual fractions with high concentrations of metals, more specifically nickel content up to 150 ppm employing acidic catalysts comprising large pore rare earth faujasite zeolite component, pentasil zeolite component and pseudoboehemite containing resid cracking component while the composite is impregnated with lanthanum oxide or aluminium oxide or mixture of both. The hydrocarbon feed stock can be sourced from either petroleum derivatives or from coal, tar or sand. The process results in increased selectivity of propylene in LPG in the range of 39-52%.
A process for enhancing nickel tolerance of heavy hydrocarbon cracking catalysts for treating heavy hydrocarbon feedstocks from various petroleum fractions including heavy residual oils containing high metal content, more specifically nickel, the process comprising the steps of:
The process for enhancing nickel tolerance of heavy hydrocarbon cracking catalysts as claimed in claim 1, wherein the composite catalyst is alternatively treated with aluminum oxide or mixture of lanthanum oxide and aluminum oxide in the range of 1-10 wt % and most preferably in the range of 3-6 wt %.
The process for enhancing nickel tolerance of heavy hydrocarbon cracking catalysts as claimed in claim 3, wherein the composite catalyst contains ZSM-5 additive in the range of 1-60 wt %, large pore Y zeolites based catalyst in the range 1-80 wt %, and alumina based bottom cracking additive in the range of 1-30 wt %.
Dependencies are inferred from the claim text.