| 摘要 |
<p>F-0572 MANUFACTURE OF HYDROCRACKED LOW POUR POINT LUBRICATING OILS Hydrocracked, low pour point lubricating oils of good stability are manufactured by passing a suitable hydrocarbon feed sequentially through a hydrocracking zone, a catalytic dewaxing zone, and a hydrotreating zone, all at high pressure and in that order, and with separation of the hydrocracked material from recycle hydrogen prior to dewaxing. Only clean makeup hydrogen is fed to the dewaxer, passed through the hydrotreater, and then on to the hydrocracker, thereby providing an exceptionally efficient process.</p> |
