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    • 41. 发明授权
    • Visbreaking yield enhancement by ultrafiltration
    • 通过超滤减粘裂化产率提高
    • US07837879B2
    • 2010-11-23
    • US12230818
    • 2008-09-05
    • Daniel P. LetaLeo D. Brown
    • Daniel P. LetaLeo D. Brown
    • C10G9/00
    • C10G1/02B01D61/145C10G9/007C10G31/11C10G55/04C10G75/00
    • Ultrafiltration may be effectively used to produce visbreaker feeds of improved quality which enable the visbreaker to be operated at higher severity with higher yields of distillable products. A heavy oil feed stream is separated by ultrafiltration or membrane separation into a permeate fraction and a retentate fraction by contacting the heavy oil feed with the first side of a porous membrane separation element in a membrane separation zone. The permeate fraction, comprised of materials which pass selectively through the porous membrane element, is retrieved and at least a portion of it is subjected to visbreaking with the improved liquid yield, especially of lighter distillate fractions. The retentate fraction can be retrieved from the first side of the porous membrane and can also be subjected to visbreaking.
    • 超滤可以有效地用于生产质量改进的减粘剂进料,这使得脱粘剂以较高的苛刻度运行,具有较高的可蒸馏产品的产率。 将重油进料流通过超滤或膜分离分离成渗透物馏分和滞留物馏分,通过使重油进料与膜分离区中的多孔膜分离元件的第一侧接触。 通过选择性穿过多孔膜元件的材料组成的渗透物组分被回收,并且其至少一部分具有改进的液体产率,特别是较轻馏分馏分的减粘裂化。 滞留部分可以从多孔膜的第一侧回收,也可以进行减粘裂化。
    • 50. 发明授权
    • Process for producing a high stability desulfurized heavy oils stream
    • 生产高稳定性脱硫重油料流的方法
    • US08778173B2
    • 2014-07-15
    • US12590157
    • 2009-11-03
    • Michael F. RatermanDaniel P. LetaWalter D. VannRoby Bearden, Jr.
    • Michael F. RatermanDaniel P. LetaWalter D. VannRoby Bearden, Jr.
    • C10G19/00C07C7/20C07C7/00
    • C10G19/00C10G29/04C10G29/06C10G29/16C10G45/02
    • The present invention relates to a process for desulfurizing heavy oil feedstreams with alkali metal compounds and improving the compatibility of the to stream components in either the feed stream, an intermediate product stream, and/or the reaction product stream in the desulfurization process. The present invention utilizes a high stability aromatic-containing stream that is preferably added to the heavy oil prior to reaction with the alkali metal compounds. The resulting stream resists precipitation of reaction solids in the desulfurization reactors. Even more preferably, the desulfurization system employs at least two desulfurization reactors in series flow wherein the high stability aromatic-containing stream is contacted with the reaction product from the first reactor prior to the second reactor, wherein the first reactor can be operated at a higher severity than without the use of the high stability aromatic-containing component stream.
    • 本发明涉及一种使用碱金属化合物脱硫重油进料流并提高脱硫过程中进料流,中间产物流和/或反应产物流中的流组分的相容性的方法。 本发明利用在与碱金属化合物反应之前优选加入到重油中的高稳定性含芳族物流。 所得流阻止脱硫反应器中反应固体的沉淀。 甚至更优选地,脱硫系统使用至少两个串联流量的脱硫反应器,其中高稳定性含芳族物流与第二反应器之前的来自第一反应器的反应产物接触,其中第一反应器可以在较高 严重程度高于不使用高稳定性的含芳烃的组分流。