METHOD OF HYDROCRACKING, LOW B THE RATIO OF IMPROVED DISTILLATE AND IMPROVED OUTPUT OF OIL MATERIALS AND THEIR PROPERTIES

摘要

1. A method for hydrocracking feedstock - vacuum gas oil, which is selective for the converted product a distillate boiling range of temperatures and gives output unconverted products suitable for use as a lubricant, the method comprising: providing raw material flow - vacuum gas oil having the nitrogen content is not greater than about 50 wt. ppm., and a sulfur content of no more than about 300 wt. ppm, the feed stream hydrocracking -. VGO step hydrocracking at high conversions stream of hydrogen-containing treat gas in the presence of a two-stage catalyst system at effective hydrocracking conditions sufficient to achieve the degree of conversion of over 55%, to form gidrokrekingaa product irazdelenie hydrocracking product converted product having a maximum of approximately 371 ° C (about 700 ° F) boiling point range, and unconverted product having and nterval boiling temperature with a minimum ratio of about 371 ° C (about 700 ° F), wherein the converted product has one or more cetane number of at least 45, the height of the smoke point of at least 20 mm and a sulfur content of not more than 12 wt. ppm., and unconverted product has one or more viscosity index of at least 80, a pour point of less than 5 ° C and a kinematic viscosity at about 100 ° C, of ​​at least 1 cSt, wherein a two-stage catalyst system comprises (1 ) USY catalyst comprising a Group VIII noble metal selected from platinum, palladium and with