C - Chemistry – Metallurgy – 10 – C
Patent
C - Chemistry, Metallurgy
10
C
196/36
C10C 3/02 (2006.01) B01D 11/04 (2006.01) C10G 47/26 (2006.01) C10G 65/12 (2006.01)
Patent
CA 1226236
ABSTRACT A process for high hydroconversion of heavy hydrocarbon liquid feedstocks such as petroleum residua containing at least about 50 V % material boiling above 975°F to produce lower boiling hydrocarbon liquid and gas products, wherein heavy RCR materials and metals compounds are removed in-situ from the reactor effluent liquid by solvent vapor extraction using a process-derived solvent vapor at supercritical con- ditions. In the process, the feedstock is catalytically hydroconverted at 780-a60°F temperature, and the resulting liquid fraction is contacted with a process-derived solvent vapor fraction having a normal boiling range of 250-400°F and heated to supercritical temperature to dissolve and extract substantially all the hydrocarbon liquid fractions, and separate heavy RCR materials and the metals compounds contained therein. The resulting supercritical solvent vapor with dissolved liquid fraction is pressure-reduced and distilled to recover the needed solvent fraction and to pro- vide a hydrocarbon liquid fraction product. The hydrogena- tion step preferably uses an ebullated catalytic bed. Also, if desired, the supercritical solvent vapor extraction step can be used intermediate two hydroconversion reaction zones connected in series to product additional desired lower boiling desulfuized hydrocarbon liquid fraction products.
447902
Gowling Lafleur Henderson Llp
Hri Inc.
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