Stripping steam recycle for solvent recovery processes
    4.
    发明授权
    Stripping steam recycle for solvent recovery processes 失效
    汽提蒸汽循环用于溶剂回收过程

    公开(公告)号:US4334983A

    公开(公告)日:1982-06-15

    申请号:US164802

    申请日:1980-06-30

    申请人: David Mentzer

    发明人: David Mentzer

    IPC分类号: C10G21/00 C10G21/20

    CPC分类号: C10G21/00

    摘要: It has been discovered that extraction processes which employ solvents to separate components from a feed stream and which solvents are themselves recovered by stripping from the thus produced extract or raffinate or both are improved in that the solvent is stripped from the extract, raffinate or both by the use of steam which has been previously distilled from a major portion of the process stream in one of the initial stages of the solvent recovery process, which steam rather than being vented or condensed for disposal is employed as a replacement for specifically generated fresh steam. This recycle steam is employed to strip any residual solvent from the extract, the raffinate or both. The steam and any residual solvent thus stripped is recycled from the extract stripper, raffinate stripper or both to the input feed of the solvent recovery train.This invention has application to any solvent extraction process employing solvent recovery wherein the solvent used in the process does not form an azeotrope with water.

    摘要翻译: 已经发现使用溶剂从进料流中分离组分的萃取方法以及哪些溶剂本身通过从如此生产的提取物或萃余液或两者中汽提回收,其中溶剂从提取物,萃余液或两者中被汽提 在溶剂回收过程的初始阶段之一中先前从工艺流的主要部分蒸馏的蒸汽的使用,其中蒸汽而不是排放或冷凝以用于处理,这被用作替代特定产生的新鲜蒸汽。 采用这种循环蒸汽从提取物,萃余液或两者中分离残留的溶剂。 蒸汽和任何如此汽提的残留溶剂从萃取汽提塔,萃余液汽提塔或二者循环到溶剂回收系统的输入进料。 本发明适用于使用溶剂回收的任何溶剂萃取方法,其中在该方法中使用的溶剂不与水形成共沸物。

    INTEGRATED HYDROTREATING HYDRODEWAXING HYDROFINISHING PROCESS
    6.
    发明申请
    INTEGRATED HYDROTREATING HYDRODEWAXING HYDROFINISHING PROCESS 审中-公开
    一体化加氢氢化氢化方法

    公开(公告)号:US20120261307A1

    公开(公告)日:2012-10-18

    申请号:US13444148

    申请日:2012-04-11

    IPC分类号: C10G65/12

    摘要: Provided is a three stage hydroprocessing process for producing lubricant base stocks with a stripping/separating zone between the first two hydroprocessing zones and a separating zone following the third hydroprocessing zone. The stripping/separating zone occurs at high pressure and temperature with no disengagement between or following the hydroprocessing zones and without the use of a liquid pump prior to the second hydroprocessing zone. The process pressure is greatest at the entrance to the first hydroprocessing zone. There is also recycle of compressed gaseous effluent from the last separating zone to the stripping zone, the first hydroprocessing zone, the second hydroprocessing zone, and/or the third hydroprocessing zone.

    摘要翻译: 提供了一种用于在前两个加氢处理区之间具有剥离/分离区的润滑剂基础油料和在第三加氢处理区之后的分离区域的三阶段加氢处理方法。 剥离/分离区在高压和高温下发生,在加氢处理区之间或之后不脱离,在第二加氢处理区之前不使用液体泵。 过程压力在第一个加氢处理区的入口处最大。 还存在从最后分离区到汽提区,第一加氢处理区,第二加氢处理区和/或第三加氢处理区的压缩气态流出物的再循环。

    Lubricant base oil hydroprocessing and blending
    7.
    发明授权
    Lubricant base oil hydroprocessing and blending 有权
    润滑油基础油加氢混合

    公开(公告)号:US09587184B2

    公开(公告)日:2017-03-07

    申请号:US14345274

    申请日:2011-09-21

    摘要: Methods are provided for producing a plurality of lubricant base oil products with an increased overall yield. Prior to the final hydrocracking stage for viscosity index uplift, a feed for making a lubricant base oil is fractionated in order to form at least a feed for making a lighter lubricant base oil and a feed for making a heavier lubricant base oil. The fractionation cut points are selected to so that the feed fraction for forming a light lubricant base oil has a higher Noack volatility and a lower viscosity than the desired targets for the lighter lubricant base oil. The feed fractions are then hydroprocessed separately to achieve desired properties. After hydroprocessing, a portion of the heavier base oil is blended into the light lubricant base oil to produce a blended base oil product. This returns the volatility and the viscosity of the blended base oil to the desired specifications.

    摘要翻译: 提供了用于生产具有增加的总产率的多种润滑剂基础油产品的方法。 在用于粘度指数升高的最终加氢裂化阶段之前,分馏用于制备润滑剂基础油的进料,以至少形成用于制备较轻润滑剂基础油的进料和用于制备较重润滑剂基础油的进料。 选择分馏馏分,使得用于形成轻质润滑剂基础油的进料馏分具有比目标较轻的基础油更高的Noack挥发性和较低的粘度。 然后将进料馏分单独加氢处理以获得所需的性能。 在加氢处理之后,将一部分较重的基础油混入轻质润滑剂基础油中以生产混合的基础油产品。 这将混合基础油的挥发性和粘度返回到所需规格。

    DIESEL FUEL PRODUCTION DURING LUBRICANT BASE OIL HYDROPROCESSING
    8.
    发明申请
    DIESEL FUEL PRODUCTION DURING LUBRICANT BASE OIL HYDROPROCESSING 有权
    在润滑油基础油加氢过程中的柴油燃料生产

    公开(公告)号:US20130066122A1

    公开(公告)日:2013-03-14

    申请号:US13611178

    申请日:2012-09-12

    IPC分类号: C10G69/02 C07C1/22

    摘要: Conditions selected for lubricant base oil production can be used to also produce a high quality diesel product. The diesel product can have a cetane index or cetane number of at least 55, corresponding to a high value diesel fuel. The diesel product can also have good cold flow properties, such as a pour point of −40° C. or less and/or a cloud point of 25° C. or less. Additionally, the sulfur content of the diesel product can be low, such as less than 1 wppm. This can allow the diesel product to be blended with other potential diesel boiling range products that have a higher sulfur content while still meeting an overall diesel fuel specification. The aromatics content can also be low, allowing the premium diesel to comply with various regulatory requirements.

    摘要翻译: 用于润滑油基础油生产的条件也可用于生产高品质的柴油产品。 柴油产品可以具有至少55的十六烷值或十六烷值,对应于高价值的柴油燃料。 柴油产品还可以具有良好的冷流特性,例如-40℃或更低的倾点和/或25℃或更低的浊点。 此外,柴油产品的硫含量可以低,例如小于1wppm。 这可以使柴油产品与其他具有较高硫含量的潜在柴油沸点产品混合,同时仍符合柴油总体规格。 芳烃含量也可以低,允许优质柴油符合各种法规要求。