Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural parallel stages of chemical conversion
Patent
1985-05-13
1986-08-12
Metz, Andrew H.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural parallel stages of chemical conversion
208 97, 208111, 208120, C10G 6518, C10G 6512, C10G 6702
Patent
active
046054880
ABSTRACT:
Relatively heavy and relatively light lube chargestocks are dewaxed in two parallel, separate reactors. The reactor used for dewaxing the relatively light chargestock contains a crystallize zeolite having pore openings defined by: (1) a ratio of sorption of n-hexane to o-xylene, on a volume percent basis, of greater than 3, which sorption is determined at a P/P.sub.o of 0.1 and at a temperature of 50.degree. C. for n-hexane and 80.degree. C. for o-xylene and (2) by the ability of selectively cracking 3-methylpentane (3MP) in preference to the doubly branched 2,3-dimethylbutane (DMB) at 1000.degree. F. and 1 atmosphere pressure from a 1/1/1 weight ratio mixture of n-hexane/3-methyl-pentane/2,3-dimethylbutane, with the ratio of rate constants k.sub.3MP /k.sub.DMB determined at a temperature of 1000.degree. F. being in excess of about 2, e.g., natural and synthetic ferrierite, ZSM-22, ZSM-23, ZSM-35 and mixtures thereof. The reactor used for dewaxing the relatively heavy chargestock contains a crystalline aluminosilicate zeolite having pore openings defined by: (1) a ratio of sorption of n-hexane to o-xylene, on a volume percent basis, or less than 3, which sorption is determined at a P/P.sub.o of 0.1 and at a temperature of 50.degree. C. for n-hexane and 80.degree. C. for o-xylene, (2) the abiilty of selectively cracking 3-methylpentane (3MP) in preference to the doubly branched 2,3-dimethylbutane (DMB) at 1000.degree. F. and 1 atmosphere pressure from a 1/1/1 weight ratio mixture of n-hexane/3-methyl-pentane/2,3-dimethylbutane, with the ratio of rate constants k.sub.3MP /K.sub.DMB determined at a temperature of 1000.degree. F. being less than about 2, and (3) a Constraint Index value of greater than about 1, e.g., ZSM-5, ZSM-11, ZSM-5/ZSM-11 intermediate and mixtures thereof.
REFERENCES:
patent: 4222855 (1980-09-01), Pelrine et al.
patent: 4229282 (1980-10-01), Peters et al.
patent: 4292166 (1981-09-01), Gorring et al.
patent: 4372839 (1983-02-01), Oleck et al.
patent: 4388177 (1983-06-01), Bowes et al.
patent: 4414097 (1983-11-01), Chester et al.
Chester Arthur W.
Garwood William E.
Vartuli James C.
Chaudhuri O.
Gilman Michael G.
McKillop Alexander J.
Metz Andrew H.
Mobil Oil Corporation
LandOfFree
Catalytic dewaxing of light and heavy oils in dual parallel reac does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Catalytic dewaxing of light and heavy oils in dual parallel reac, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Catalytic dewaxing of light and heavy oils in dual parallel reac will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1934656