Claims
- 1. A process for hydrocracking and dewaxing a heavy hydrocarbon vacuum gas oil having an initial boiling point above 650.degree. F. comprising high molecular weight long chain, waxy paraffins and high molecular weight aromatics including fused ring aromatics, which process comprises contacting the oil with a catalyst comprising (i) zeolite beta having a silica:alumina ratio of about 30:1 as an acidic component and (ii) a hydrogenation component at a temperature of 230.degree. C. to 500.degree. C. and in the presence of hydrogen gas at a total pressure of 500 to 20,000 kPa, a space velocity of 0.1 to 10 LHSV and a hydrogen circulation rate of 10 to 3500 n.1.1..sup.-1 to bring about a bulk conversion including hydrocracking of aromatic components simultaneously with a conversion of the long chain waxy paraffins present in the feed and produced by the hydrocracking reactions to effect a dewaxing of the feed simultaneously with the hydrocracking so that the pour point of the fraction of the product boiling above 650.degree. F. is reduced relative to the pour point of the feed to a value of about 0.degree. C.
- 2. A process according to claim 1 in which the hydrogenation components comprise nickel, tungsten, cobalt, molybdenum or mixtures of these metals.
- 3. A process according to claim 2 in which the hydrogenation component comprises nickel and tungsten.
- 4. A process according to claim 1 in which the hydrogenation component comprises platinum, palladium, or combinations of them.
- 5. A process according to claim 1 wherein the heavy hydrocarbon oil has an end point of up to 1050.degree. F.
- 6. A process according to claim 1 wherein the heavy hydrocarbon oil has an end point of up to 950.degree. F.
- 7. A process according to claim 1 in which the vacuum gas oil has a pour point of about 40.degree. C.
- 8. A process according to claim 1 in which the oil is subjected to hydrotreating before the hydrocracking.
Parent Case Info
This application is a continuation of application Ser. No. 07/544,792, filed Jun. 29, 1990, now abandoned, which is a continuation of application Ser. No. 07/383,700, filed Jul. 24, 1989, now abandoned, which is a continuation of application Ser. No. 06/379,421, filed May 18, 1982, now abandoned.
US Referenced Citations (8)
Non-Patent Literature Citations (1)
Entry |
Frillette et al., "Catalysis by Crystalline Aluminosilicates . . . Constraint Index," Journal of Catalysis, 67, 218-222 (1981). |
Continuations (3)
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Number |
Date |
Country |
Parent |
544792 |
Jun 1990 |
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Parent |
383700 |
Jul 1989 |
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Parent |
379421 |
May 1982 |
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