Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1975-01-06
1976-07-06
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208120, 208135, 208141, 252455Z, 252477R, C10G 1302, C10G 1104, B01J 2928
Patent
active
039680240
ABSTRACT:
In the dewaxing of gas oils for the purpose of pour point reduction by catalytic hydrodewaxing using a catalyst comprising a crystalline aluminosilicate zeolite having a high silica to alumina ratio of at least 12 and a constraint index of about 1 to 12, carrying out the process at elevated temperature and pressure, including providing a hydrogen atmosphere in a preferred process configuration, the improvement of using a catalyst comprising said zeolite in microcrystalline from having a maximum crystal size of about 0.05 microns (M); and of operating the process at low pressures of up to about 500 psig, whereby not only is the catalytic activity increased but the catalyst aging rate is decreased and the product distribution is varied such that the process does not consume hydrogen but rather produces hydrogen or is at least neutral in this respect.
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Gorring Robert L.
Shipman George F.
Gantz Delbert E.
Gilman Michael G.
Huggett Charles A.
Mobil Oil Corporation
Schmitkons G. E.
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