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    • 31. 发明授权
    • Stable olefinic, low sulfur diesel fuels
    • 稳定的烯烃,低硫柴油燃料
    • US07179311B2
    • 2007-02-20
    • US10355284
    • 2003-01-31
    • Dennis J. O'RearJohn E. Sundberg
    • Dennis J. O'RearJohn E. Sundberg
    • C10L1/18C10L1/22
    • C10L1/08C10L1/14C10L1/1824C10L1/1832C10L1/1881C10L1/19C10L1/2222C10L1/223
    • The present invention relates to a stable blended diesel fuel comprising an olefinic diesel fuel blending stock. The olefinic diesel fuel blending stock of the invention comprises olefins in an amount of 2 to 80 weight percent, non-olefins in an amount of 20 to 98 weight percent wherein the non-olefins are substantially comprised of paraffins, oxygenates in an amount of at least 0.012 weight percent and sulfur in an amount of less than 1 ppm. To provide acceptable stability, the blended diesel fuel comprising the olefinic diesel fuel blending stock comprises a sulfur-free antioxidant. The blended diesel fuel comprising the olefinic diesel fuel blending stock and sulfur-free antioxidant added has a peroxide content of less than 5 ppm when stored at 60° C. for 4 weeks. The present invention also relates to processes for making the stable blended diesel fuel and olefinic diesel fuel blending stocks as defined above.
    • 本发明涉及包含烯烃柴油混合原料的稳定混合柴油燃料。 本发明的烯烃柴油混合原料包含2至80重量%的烯烃,其量为20至98重量%的非烯烃,其中非烯烃基本上由链烷烃组成,含氧化合物的量为 至少0.012重量%和小于1ppm的硫。 为了提供可接受的稳定性,包含烯烃柴油混合原料的混合柴油包含无硫抗氧化剂。 包含烯烃柴油混合原料和无硫氧化物的混合柴油燃料在60℃下储存4周时的过氧化物含量小于5ppm。 本发明还涉及如上定义的制备稳定的混合柴油和烯烃柴油混合原料的方法。
    • 33. 发明授权
    • Process for improving production of Fischer-Tropsch distillate fuels
    • 改进费 - 托馏分燃料生产的方法
    • US06824574B2
    • 2004-11-30
    • US10267444
    • 2002-10-09
    • Dennis J. O'RearThomas Van HarrisCong-Yan Chen
    • Dennis J. O'RearThomas Van HarrisCong-Yan Chen
    • C10L118
    • C10L1/026
    • Olefins and alcohols present in Fischer-Tropsch light naphthas are converted to dialkyl ethers of the formula: R—O—R′ where R and R′ are each primarily non-tertiary alkyl groups of more than four carbon atoms, via hydration of the olefins to alcohols followed by dehydration of the alcohols. Ethers may also form by direct reaction of olefins and alcohols. The ethers are separated from the remaining paraffins in the naphtha by distillation and added in an amount of 1-25 wt. % to paraffinic mid-distillate fuel components obtained by hydrotreating a Fischer-Tropsch product. The properties of the distillate fuel components such as lubricity and seal swell are improved by the dialkyl ethers. The removal of olefins and alcohols from the naphthas reduces refining and lead to a more salable product.
    • 存在于费 - 托轻石脑油中的烯烃和醇转化为下式的二烷基醚:ROR',其中R和R'各自主要是具有四个以上碳原子的非叔烷基,通过将烯烃水合成醇, 醇的脱水。 醚也可以通过烯烃和醇的直接反应形成。 通过蒸馏将醚与石脑油中的剩余链烷烃分离,并以1-25重量%的量加入。 %对通过加氢处理费 - 托产物而获得的链烷烃中间馏分燃料组分。 通过二烷基醚改善馏出物燃料组分的性质,如润滑性和密封膨胀。 从石脑油中除去烯烃和醇可以减少精炼并导致更可销售的产品。
    • 36. 发明授权
    • Use of microchannel reactors in combinatorial chemistry
    • 在组合化学中使用微通道反应器
    • US06806087B2
    • 2004-10-19
    • US10156164
    • 2002-05-28
    • Charles L. KibbyDennis J. O'RearGeorgieanna L. Scheuerman
    • Charles L. KibbyDennis J. O'RearGeorgieanna L. Scheuerman
    • G01N3110
    • G01N31/10B01J19/0046B01J19/0093B01J2219/00279B01J2219/00585B01J2219/00698B01J2219/00702B01J2219/00745B01J2219/00747B01J2219/00835B01J2219/00858B01J2219/0086B01J2219/00891B01J2219/00952C40B30/08C40B40/18C40B60/14
    • Methods for discovering optimum catalysts and/or reaction conditions for performing endo-or exothermic reactions, in particular gas-to-liquid reactions, are disclosed. A combinatorial approach is used to identify optimum catalysts and/or reaction conditions for performing the reactions. The reactions are performed in the channels of a microchannel reactor. These results can be used directly to optimize large scale reactions performed in a plurality of microchannel reactors, or can be correlated to useful catalysts and reaction conditions for use in large scale reactors by taking into consideration the heat transfer effects in the microchannel reactor and the large scale reactor. The method can advantageously be used to generate a database of combinations of catalyst systems and/or reaction conditions which provide various product streams, such that as market conditions vary and/or product requirements change, conditions suitable for forming desired products can be identified with little or no downtime. The catalysts can be evaluated using varied reaction conditions, which can provide a) a combinatorial library of product streams and a database including the combination of catalysts and reaction conditions to provide each product stream and/or b) the optimum combination of catalysts and reaction conditions for obtaining a desired product stream.
    • 公开了用于发现用于进行内反应或放热反应,特别是气 - 液反应的最佳催化剂和/或反应条件的方法。 组合方法用于鉴定用于进行反应的最佳催化剂和/或反应条件。 反应在微通道反应器的通道中进行。 这些结果可以直接用于优化在多个微通道反应器中进行的大规模反应,或者可以通过考虑到在微通道反应器中的传热效应和大型反应器中的大量反应器中的热传递效应而与用于大规模反应器的有用的催化剂和反应条件相关联 规模反应堆。 该方法可以有利地用于产生提供各种产物流的催化剂体系和/或反应条件的组合的数据库,使得随着市场条件变化和/或产品需求的变化,可以很少地识别适合于形成所需产品的条件 或不停机。 可以使用不同的反应条件来评估催化剂,其可以提供a)产物流的组合文库和包括催化剂和反应条件的组合的数据库,以提供每种产物流和/或b)催化剂和反应条件的最佳组合 以获得所需的产品流。
    • 38. 发明授权
    • Process for upflow fixed-bed hydroprocessing of fischer-tropsch wax
    • 费托蜡的上流固定床加氢处理工艺
    • US06359018B1
    • 2002-03-19
    • US09698392
    • 2000-10-27
    • Dennis J. O'RearKrishniah ParimiRichard O. Moore, Jr.
    • Dennis J. O'RearKrishniah ParimiRichard O. Moore, Jr.
    • C07C2700
    • C10G49/00
    • An integrated process for producing a liquid hydrocarbon stream from Fischer-Tropsch hydrocarbon product without having to remove particulate contaminants such as catalyst fines from hot Fischer-Tropsch wax is disclosed. The process involves performing Fischer-Tropsch synthesis, preferably under conditions which favor formation of wax and heavy products (i.e., using a catalyst with high chain growth probabilities), and obtaining a waxy heavy fraction including particulate contaminants. The fraction is subjected to hydroprocessing conditions, preferably upflow hydroprocessing conditions, using a catalyst bed which, through judicious selection of hydroprocessing catalysts and/or flow conditions, permits passage of the particulate contaminants. The particulates are then removed from the upgraded liquid product, for example by filtration, distillation and/or centrifugation. Removal of the particulate contaminants from the upgraded liquid hydrocarbon products is significantly easier than removing the particulates from the unprocessed waxy heavy products.
    • 公开了一种用于从费 - 托烃产物生产液态烃流的综合方法,而不必从热的费托蜡中除去诸如催化剂细粒的微粒污染物。 该方法包括进行费 - 托合成,优选在有利于形成蜡和重产物的条件下(即,使用具有高链生长概率的催化剂),并获得包括颗粒污染物的蜡质重馏分。 使用催化剂床进行加氢处理条件,优选上流加氢处理条件,催化剂床通过明智选择加氢处理催化剂和/或流动条件允许颗粒污染物通过。 然后将微粒从升级的液体产物中除去,例如通过过滤,蒸馏和/或离心。 从升级的液体烃产品中除去颗粒污染物比从未加工的蜡质重质产物中除去颗粒更容易。