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    • 1. 发明授权
    • Process for producing diisopropyl ether from propane
    • 从丙烷生产二异丙醚的方法
    • US5750800A
    • 1998-05-12
    • US556117
    • 1995-11-09
    • Terry L. MarkerBrian S. MuldoonBryan K. GloverBipin V. Vora
    • Terry L. MarkerBrian S. MuldoonBryan K. GloverBipin V. Vora
    • C07C5/333C07C41/05C07C41/00
    • C07C41/05C07C5/333Y02P20/125
    • An integrated process to produce diisopropyl ether from propane has been developed. In a first reaction zone the propane in a feedstock, after any hydrocarbons containing four or more carbon atoms are removed from the feedstock via fractionation, is dehydrogenated in the presence of a dehydrogenation catalyst to form propylene. After removing hydrogen, the propane and propylene mixture generated in the first reaction zone is separated into a propane enriched stream and a propylene enriched stream where the propylene enriched stream contains at least 65 mass % propylene. The propane enriched stream is recycled to the feedstock fractionation unit, and the propylene of the propylene enriched stream is reacted with water in a second reaction zone in the presence of an acidic catalyst to form isopropyl alcohol which is concurrently reacted with propylene to produce diisopropyl ether. A portion of the second reaction zone effluent is recycled to the second reaction zone, and the remainder may be collected or further separated to provide a high purity diisopropyl ether product. A variant to produce high purity propylene as well as diisopropyl ether is also discussed.
    • 已经开发了从丙烷生产二异丙醚的综合方法。 在第一反应区中,原料中的丙烷在含有四个或更多个碳原子的烃通过分馏从原料中除去后,在脱氢催化剂存在下脱氢形成丙烯。 除去氢气后,在第一反应区产生的丙烷和丙烯混合物分离成富丙烷流和富丙烯流,其中富含丙烯的料流含有至少65质量%的丙烯。 将富丙烷流再循环至原料分馏装置,在酸性催化剂存在下,使丙烯富集物流的丙烯与第二反应区中的水反应形成异丙醇,同时与丙烯反应产生二异丙醚 。 第二反应区流出物的一部分再循环至第二反应区,其余部分可以被收集或进一步分离以提供高纯度的二异丙醚产物。 还讨论了生产高纯度丙烯以及二异丙基醚的变体。
    • 2. 发明授权
    • Enhanced light olefin production
    • 增强轻烯烃生产
    • US6049017A
    • 2000-04-11
    • US59906
    • 1998-04-13
    • Bipin V. VoraTerry L. MarkerPaul T. Barger
    • Bipin V. VoraTerry L. MarkerPaul T. Barger
    • C07C11/04C07C11/06C07C1/00C07C1/20C07C4/06
    • C07C4/06B01J21/16B01J29/005B01J29/035B01J29/85B01J37/0045C07C1/20C07C7/14891C07C7/163C10G11/05C10G11/18C10G27/00C10G51/026C10G55/06B01J2229/42C07C2529/65C07C2529/84C07C2529/85C10G2400/20Y02P20/52Y02P30/42
    • A process is disclosed for enhancing the production of light olefins with a catalytic reaction zone containing small pore zeolitic and non-zeolitic catalysts which can significantly improve the yield of ethylene and propylene in a process for the conversion of light olefins having four carbon atoms per molecule and heavier. Specifically, a C.sub.4 olefin stream from an ethylene production complex is converted in a reaction zone over a non-zeolitic catalyst at effective conditions to produce a product mixture containing ethylene and propylene. Ethylene and propylene are separated from the product mixture and recovered. A portion of the remaining heavy hydrocarbons and paraffins may be recycled to the reaction zone for further conversion, or oligomerized to produce valuable downstream products. The additional step of removing iso-olefins from the recycle stream provided significant advantages. The process of the present invention may be applied in commercial ethylene plants, in petroleum refining catalytic cracking operations, and in processes for the conversion of oxygenates such as methanol-to-olefins to enhance the production of ethylene and propylene.
    • 公开了一种利用含有小孔沸石和非沸石催化剂的催化反应区增强轻质烯烃生产的方法,该催化反应区可在每分子具有四个碳原子的轻质烯烃转化方法中显着提高乙烯和丙烯的产率 更重 具体地说,来自乙烯生成络合物的C 4烯烃流在有效条件下在非沸石催化剂的反应区中被转化,以产生含有乙烯和丙烯的产物混合物。 将乙烯和丙烯与产物混合物分离并回收。 剩余的重质烃和链烷烃的一部分可以再循环到反应区进行进一步的转化,或被低聚制成有价值的下游产物。 从循环流中除去异烯烃的附加步骤提供了显着的优点。 本发明的方法可以应用于商业乙烯装置,石油精炼催化裂化操作,以及用于转化含氧化合物如甲醇至烯烃的方法中以增加乙烯和丙烯的生产。
    • 3. 发明授权
    • Process for producing light olefins from crude methanol
    • 从粗甲醇生产轻质烯烃的方法
    • US5714662A
    • 1998-02-03
    • US513242
    • 1995-08-10
    • Bipin V. VoraTerry L. MarkerHenning R. Nilsen
    • Bipin V. VoraTerry L. MarkerHenning R. Nilsen
    • C10C1/02C07C1/20C07C11/02C07C41/05C07C41/06C08F210/16C07C1/24
    • C07C1/20C07C11/02C07C41/05C07C41/06C08F210/16C07C2529/85Y02P20/52Y02P30/42
    • A process is disclosed for the production of light olefins from a hydrocarbon gas stream by a combination of reforming, oxygenate production, and oxygenate conversion wherein a crude methanol stream--produced in the production of oxygenates and comprising methanol, light ends, and heavier alcohols--is passed directly to the oxygenate conversion zone for the production of light olefins. Furthermore, the combination provides the synergy for increased catalyst life and reduced water treatment costs by recycling by-product water produced in the oxygenate conversion zone to provide water to the syngas production zone. The advantage of this integration is the elimination of costly methanol separation and purification steps which result in the overall reduction in the costs of producing the light olefins. Other advantages include the reduction in catalyst cost in the oxygenate production zone by the reduction in the catalyst selectivity by the extension of catalyst life in the oxygenate production zone. In addition, a portion of the by-product water can be combined with a propylene stream to provide a high octane blending component for gasoline. The propylene and butylene fractions produced by the above integrated scheme are further converted to high octane ether and other high value products.
    • 公开了一种通过重整,含氧化合物生产和含氧化合物转化的组合从烃类气体流中生产轻质烯烃的方法,其中在生产含氧化合物并且包含甲醇,轻馏分和较重的醇 - 直接通入含氧化合物转化区用于生产轻质烯烃。 此外,该组合通过再循环在含氧化合物转化区产生的副产物水以向合成气生产区提供水,提供了增加催化剂寿命和降低水处理成本的协同作用。 这种整合的优点是消除了昂贵的甲醇分离和纯化步骤,导致轻质烯烃的生产成本的总体降低。 其他优点包括通过在含氧化合物生产区延长催化剂寿命,催化剂选择性降低,从而降低含氧化合物生产区的催化剂成本。 此外,一部分副产物水可以与丙烯流混合以提供用于汽油的高辛烷值混合组分。 由上述集成方案制备的丙烯和丁烯馏分进一步转化成高辛烷值和其它高价值产物。