| 摘要 |
<p>Hydrocracked, low pour point lubricating oils of good stability are manufactured by passing a suitable hydrocarbon feed (1) and hydrogen (2) sequentially through a hydrocracking zone (4), a catalytic dewaxing zone (9), and a hydrotreating zone (11), all at high pressure and in that order, with purification of the hydrogen gas (6) prior to passage to the dewaxing zone. By maintaining all zones at high pressure, the efficiency of the process is augmented.</p> |
