公开(公告)号：US3642612A

公开(公告)日：1972-02-15

申请号：US3642612D

申请日：1969-02-14

Applicant: SNAM PROGETTI

Inventor： GIROTTI PIERLEONA ,  FLORIS TELEMACO ,  PECCI GIANCARIO

IPC: C10G65/08 ,  C10G47/00 ,  C10G65/12 ,  C10G23/00

CPC classification number: C10G47/00

Abstract: A novel two-stage hydrogenation process for producing lubricating oils is disclosed which comprises passing a deasphalted vacuum residue and/or vacuum distillate feedstock through a preheater, contacting the resulting feedstock with a catalyst consisting of sulfides and/or oxides of the VI and VIII group metals on a slightly acid support in the presence of hydrogen at certain temperature, pressure, space velocity and hydrogen flow conditions (first stage), contacting the resulting product under the same temperature, pressure, space velocity and hydrogen flow conditions as in the first stage with a catalyst consisting of sulfides and/or oxides of the VI and VIII group metals on an acid support, conveying the resulting products to a high-pressure separator where hydrogen is removed, purified and recycled, conveying the resulting product to a low-pressure separator where undesirable gases are removed, introducing the resulting product into a stripping column, where certain useful byproducts are removed, transferring the bottom products to a deparaffination unit wherein paraffins removed therein are recycled to the first reaction stage and then conveying the deparaffinated product to a vacuum-fractionating column where the desired lubricating oils are obtained.

Abstract translation: 公开了用于生产润滑油的新型两阶段氢化方法，其包括使脱沥青真空残渣和/或真空馏分原料通过预热器，使所得原料与由VI和VIII族的硫化物和/或氧化物组成的催化剂接触 在一定温度，压力，空间速度和氢气流动条件（第一阶段）存在氢的情况下，在酸性载体上存在金属，在与第一阶段相同的温度，压力，空间速度和氢气流条件下使所得产物接触 在酸性载体上由VI和VIII族金属的硫化物和/或氧化物组成的催化剂，将所得产物输送到高压分离器，其中除去氢气，纯化和再循环，将所得产物输送到低压 分离器，其中不需要的气体被除去，将所得产物引入汽提塔，其中某些有用的副产物 将底部产物转移到脱附单元，其中将其中除去的链烷烃再循环到第一反应阶段，然后将脱蜡产物输送到获得所需润滑油的真空分馏塔。