A process for producing middle distillates by hydrocracking a heavy distillate oil under middle pressure uses a hydrofining catalyst and a hydrocracking catalyst in series and once-through operation. The once-through volume conversion to 350.degree. C.--products is up to 80 vol. %. The yield and selectivity...http://www.google.es/patents/US5954944?utm_source=gb-gplus-sharePatente US5954944 - Process for hydrocracking heavy distillate oil under middle pressure
Process for hydrocracking heavy distillate oil under middle pressure