Direct oxidation of methane to formaldehyde and methanol
    1.
    发明授权
    Direct oxidation of methane to formaldehyde and methanol 有权
    甲烷直接氧化成甲醛和甲醇

    公开(公告)号:US09512055B1

    公开(公告)日:2016-12-06

    申请号:US14807715

    申请日:2015-07-23

    申请人: Najran University

    IPC分类号: C07C45/73 C07C29/50 C07C45/33

    摘要: A process for the direct oxidation of methane to C1-oxygenates (formaldehyde and methanol) has been developed. The process involves a gas stream, comprising methane, an oxidizing agent (such as air, or oxygen blended with an inert diluent), and a nitrogen oxide as a gas phase sensitizer at oxidation conditions to produce C1-oxygenates, such as formaldehyde and methanol. A certain proportion of nitrogen oxide, which acts as a radical initiator, in the stream is crucial to achieve a high yield of formaldehyde and methanol. In addition, the temperature plays an important role in the conversion of methane and in the selectivity to C1-oxygenates.

    摘要翻译: 已经开发了将甲烷直接氧化成C1-含氧化合物(甲醛和甲醇)的方法。 该方法包括在氧化条件下包含甲烷,氧化剂(例如空气或与惰性稀释剂混合的氧气)和氮氧化物作为气相敏化剂的气流,以产生C1-含氧化合物,例如甲醛和甲醇 。 在流中用作自由基引发剂的一定比例的氮氧化物对于实现高产率的甲醛和甲醇是至关重要的。 此外,温度在甲烷的转化和对C1-含氧化合物的选择性中起重要作用。

    Direct Oxidation of Methane to Formaldehyde and Methanol
    2.
    发明申请
    Direct Oxidation of Methane to Formaldehyde and Methanol 有权
    甲烷直接氧化成甲醛和甲醇

    公开(公告)号:US20160340283A1

    公开(公告)日:2016-11-24

    申请号:US14807715

    申请日:2015-07-23

    申请人: Najran University

    IPC分类号: C07C45/33 C07C29/50

    摘要: A process for the direct oxidation of methane to C1-oxygenates (formaldehyde and methanol) has been developed. The process involves a gas stream, comprising methane, an oxidizing agent (such as air, or oxygen blended with an inert diluent), and a nitrogen oxide as a gas phase sensitizer at oxidation conditions to produce C1-oxygenates, such as formaldehyde and methanol. A certain proportion of nitrogen oxide, which acts as a radical initiator, in the stream is crucial to achieve a high yield of formaldehyde and methanol. In addition, the temperature plays an important role in the conversion of methane and in the selectivity to C1-oxygenates.

    摘要翻译: 已经开发了将甲烷直接氧化成C1-含氧化合物(甲醛和甲醇)的方法。 该方法包括在氧化条件下包含甲烷,氧化剂(例如空气或与惰性稀释剂混合的氧气)和氮氧化物作为气相敏化剂的气流,以产生C1-含氧化合物,例如甲醛和甲醇 。 在流中用作自由基引发剂的一定比例的氮氧化物对于实现高产率的甲醛和甲醇是至关重要的。 此外,温度在甲烷的转化和对C1-含氧化合物的选择性中起重要作用。

    Workup of a cyclododecanone cyclododecanol mixture in a sequence of side draw columns
    5.
    发明授权
    Workup of a cyclododecanone cyclododecanol mixture in a sequence of side draw columns 有权
    在一系列侧抽塔中处理环十二烷环十二烷醇混合物

    公开(公告)号:US09382181B2

    公开(公告)日:2016-07-05

    申请号:US14105587

    申请日:2013-12-13

    摘要: A process for removing a cyclododecanone-rich target fraction (A) from a dehydrogenation mixture (O) comprising low boilers (LB), cyclododecanone (CDON), medium boilers (MB), cyclododecanol (CDOL) and high boilers (HB) is provided. According to the process, substantially pure CDON is obtained via a distillative sequence of two side draw columns connected in series, wherein the sidestream of the primary side draw column is fed into the secondary side draw column. From the top of each of the two side draw columns, a CDON-rich fraction is drawn off, and these are combined to form a target fraction, which is essentially pure CDON.

    摘要翻译: 提供一种从包含低锅炉(LB),环十二烷酮(CDON),中等锅炉(MB),环十二烷醇(CDOL)和高锅炉(HB)的脱氢混合物(O)中除去富含环十二酮的目标馏分(A)的方法 。 根据该方法,通过串联连接的两个侧拉伸塔的蒸馏序列获得基本上纯的CDON,其中一次侧拉伸塔的侧流进料到二次侧拉伸塔中。 从两侧拉伸塔的顶部开始,排出富含CDON的级分,并将它们组合形成基本上纯的CDON的目标级分。

    Reactive scrubbing for upgrading product value, simplifying process operation and product handling
    6.
    发明授权
    Reactive scrubbing for upgrading product value, simplifying process operation and product handling 有权
    反应洗涤提升产品价值,简化工艺操作和产品处理

    公开(公告)号:US09174903B2

    公开(公告)日:2015-11-03

    申请号:US13841975

    申请日:2013-03-15

    摘要: A method for removing formaldehyde from a blend of partially oxygenated hydrocarbons is provided. The method including a step of reacting a hydrocarbon-containing gas with an oxygen-containing gas in a reaction vessel to form first product blend. The first product blend includes a blend of partially oxygenated compounds that include formaldehyde. The blend of partially oxygenated compounds is provided to a reactive scrubbing station where it is contacted with a reactive scrubbing liquid to form a reactive liquid-formaldehyde compound. The reactive liquid-formaldehyde compound is then removed from the first blend of partially reactive compounds.

    摘要翻译: 提供了从部分含氧烃混合物中除去甲醛的方法。 该方法包括使含烃气体与含氧气体在反应容器中反应以形成第一产物共混物的步骤。 第一产品共混物包括部分含氧化合物(包括甲醛)的混合物。 将部分含氧化合物的混合物提供给反应性洗涤站,其中其与反应性洗涤液体接触以形成反应性液体 - 甲醛化合物。 然后从部分反应性化合物的第一共混物中除去反应性液体 - 甲醛化合物。

    PROCESS FOR THE PURIFICATION OF A CYCLOHEXANE AIR OXIDATION PRODUCT STREAM
    7.
    发明申请
    PROCESS FOR THE PURIFICATION OF A CYCLOHEXANE AIR OXIDATION PRODUCT STREAM 审中-公开
    环氧化物空气氧化产品流的净化方法

    公开(公告)号:US20150232393A1

    公开(公告)日:2015-08-20

    申请号:US14415159

    申请日:2012-07-19

    申请人: David Lee Valdez

    发明人: David Lee Valdez

    摘要: A method is disclosed for removing contaminants from a feed stream to a hydrogenation process that begins with providing a product mixture from an air oxidation reaction. A first liquid separation process and cooling procedure is used on the product mixture to form a cooled product mixture and a first vapor stream. The cooled product mixture is then subjected to a water wash to form a washed product mixture and an aqueous exit stream, wherein a majority of the water soluble other oxidation products from the cooled product mixture are present in the aqueous exit stream. Next, the washed product stream undergoes a second liquid separation and water removal to form a treated product mixture and a second vapor stream. Finally, the treated product mixture is recovered and can be fed to a hydrogenation process.

    摘要翻译: 公开了一种从进料流中除去污染物到加氢过程的方法,其开始于从空气氧化反应提供产物混合物。 在产品混合物上使用第一液体分离方法和冷却程序以形成冷却的产物混合物和第一蒸气流。 然后将冷却的产物混合物进行水洗以形成洗涤的产物混合物和水性出口流,其中来自冷却的产物混合物的大部分水溶性其它氧化产物存在于水性出口物流中。 接下来,洗涤的产物流进行第二次分液和除水以形成经处理的产物混合物和第二蒸气流。 最后,回收处理过的产物混合物,并将其加入氢化过程。

    Process for preparing C1-C4-oxygenates by partial oxidation of hydrocarbons
    9.
    发明授权
    Process for preparing C1-C4-oxygenates by partial oxidation of hydrocarbons 有权
    通过烃的部分氧化制备C1-C4-含氧化合物的方法

    公开(公告)号:US08609906B2

    公开(公告)日:2013-12-17

    申请号:US12967337

    申请日:2010-12-14

    IPC分类号: C07C27/00

    摘要: A process for preparing C1-C4-oxygenates from a reactant stream A which comprises essentially a C1-C4-alkane or a mixture of C1-C4-alkanes, by a) branching off a substream B of the reactant stream A and allowing it to react in a reactor with oxygen or an oxygenous gas stream C, which converts a portion of the C1-C4-alkane or a portion of the mixture which comprises C1-C4-alkanes to C1-C4-oxygenates, b) removing at least 90 mol % of the C1-C4-oxygenates formed from the product stream D resulting from step a) to form a remaining low boiler stream E, which comprises combining the low boiler stream E with the reactant stream A without further workup and without combination with the substream B down-stream of the branching site of the substream B.

    摘要翻译: a)从反应物流A制备C1-C4-含氧化合物的方法,该反应物流A基本上包含C 1 -C 4烷烃或C 1 -C 4烷烃的混合物,a)将反应物流A的分支B分支, 在反应器中与氧或有氧气流C反应,C将C1-C4烷烃的一部分或包含C1-C4烷烃的混合物的一部分转化为C1-C4-氧化物,b)除去至少90 由步骤a)产生的产物流D形成的C1-C4-含氧化合物的摩尔%,以形成剩余的低沸点物流E,其包括将低沸点物流E与反应物流A组合而不进一步处理,并且不与 子流B的分支位点下游的子流B