RECOVERY COLUMN FOR THE PURIFICATION OF ACRYLONITRILE/ACETONITRILE MIXTURES
    1.
    发明申请
    RECOVERY COLUMN FOR THE PURIFICATION OF ACRYLONITRILE/ACETONITRILE MIXTURES 审中-公开
    回收塔净化丙烯腈/乙腈混合物

    公开(公告)号:WO2017105831A1

    公开(公告)日:2017-06-22

    申请号:PCT/US2016/064069

    申请日:2016-11-30

    Abstract: A process for separating acrylonitrile from a mixture of acrylonitrile and acetonitrile includes providing a mixture of acrylonitrile and acetonitrile to a recovery column; contacting the mixture of acrylonitrile and acetonitrile with aqueous solvent to provide an acrylonitrile-water azeotrope; and separating the acrylonitrile-water azeotrope from the acetonitrile to provide an overhead stream that includes the acrylonitrile-water azeotrope and about 0.05 weight percent or less acetonitrile, a bottoms stream that includes about 0 to about 0.0075 weight percent acetonitrile, and a sidestream that includes about 5 to about 70 weight % acetonitrile.

    Abstract translation: 从丙烯腈和乙腈的混合物中分离丙烯腈的方法包括将丙烯腈和乙腈的混合物提供给回收塔; 使丙烯腈和乙腈的混合物与水性溶剂接触以提供丙烯腈 - 水共沸混合物; 并将丙烯腈 - 水共沸混合物与乙腈分离以提供包含丙烯腈 - 水共沸混合物和约0.05重量%或更少乙腈的塔顶物流,包含约0至约0.0075重量%乙腈的底部物流和包含 约5至约70重量%的乙腈。

    HEADS COLUMN OVERHEAD SYSTEM
    5.
    发明申请
    HEADS COLUMN OVERHEAD SYSTEM 审中-公开
    头系列系统

    公开(公告)号:WO2015142718A1

    公开(公告)日:2015-09-24

    申请号:PCT/US2015/020709

    申请日:2015-03-16

    CPC classification number: C07C253/34 C07C255/08

    Abstract: An apparatus comprises a heads column and an overhead system. The heads column is configured to receive a crude nitriles feed stream. The heads column is configured to distill the crude nitriles feed stream under a partial vacuum and produce a heads column overhead stream comprising HCN at the top of the heads column, and a bottom liquid stream comprising acrylonitrile product at the bottom of the heads column. The heads column comprises a condenser that is configured to condense the heads column overhead stream. The apparatus comprises a glandless pump in the overhead system. The pump is configured to pump at least a portion of the heads column overhead stream as a reflux stream to the heads after the heads column overheard stream is condensed in the condenser.

    Abstract translation: 一种装置包括头柱和架空系统。 头柱被配置成接收粗腈进料流。 头柱被配置为在部分真空下蒸馏粗腈进料流,并在头柱顶部产生包含HCN的头塔顶塔流,以及在塔柱底部包含丙烯腈产物的底部液体料流。 头柱包括冷凝器,其被配置为冷凝头塔塔顶流。 该装置包括顶置系统中的无压力泵。 泵被配置为在头柱听到的气流在冷凝器中冷凝之后将至少一部分头顶塔顶流作为回流流泵送到头部。

    HCN HEADS COLUMN PUMP AROUND FOR ACRYLONITRILE RECOVERY
    6.
    发明申请
    HCN HEADS COLUMN PUMP AROUND FOR ACRYLONITRILE RECOVERY 审中-公开
    HCN头柱式泵用于丙烯腈回收

    公开(公告)号:WO2017087175A1

    公开(公告)日:2017-05-26

    申请号:PCT/US2016/060252

    申请日:2016-11-03

    Abstract: A process and system for acrylonitrile and HCN recovery includes a heads column system operated to reduce heads column condenser duty and reduce equipment while maintaining required purity and specifications with minimal increases in reboiler duty. In one aspect, the process includes providing a feed stream that includes acrylonitrile, HCN and water to a heads column; distilling the feed stream in the heads column to produce a heads column overhead stream that includes HCN and a bottom liquid stream that includes acrylonitrile; removing a sidestream from a side draw of the heads column that includes water and organics; separating at least some water and organics from the sidestream to provide an organic stream; returning the organic stream to the heads column; and adjusting a ratio of an amount of sidestream removed from a side draw of the heads column to an amount of organic stream returned to the heads column below the side draw to provide the bottom liquid stream with 500 ppm or less HCN.

    Abstract translation: 用于丙烯腈和HCN回收的方法和系统包括用于降低塔顶冷凝器负荷和减少设备的头馏分塔系统,同时保持所需的纯度和规格,并且再沸器负荷最小化。 在一个方面,该方法包括提供包含丙烯腈,HCN和水的进料流至头部柱; 蒸馏头部塔中的进料流以产生包含HCN和包含丙烯腈的底部液体物流的头馏分塔塔顶物流; 从包括水和有机物的头部柱的侧线中去除侧流; 从侧流分离至少一些水和有机物以提供有机流; 将有机流返回到头部塔; 并且调节从所述头馏分塔的侧馏分移除的侧流的量与在所述侧馏分下方返回到所述头馏分塔的有机物流的量的比率,以提供具有500ppm或更少的HCN的底部液体物流。

    IMPROVED CYCLONE CONFIGURATION FOR AMMOXIDATION REACTOR
    7.
    发明申请
    IMPROVED CYCLONE CONFIGURATION FOR AMMOXIDATION REACTOR 审中-公开
    改善循环反应器的循环配置

    公开(公告)号:WO2016144662A1

    公开(公告)日:2016-09-15

    申请号:PCT/US2016/020551

    申请日:2016-03-03

    CPC classification number: B01J8/0055 C07C253/26 C07C255/08

    Abstract: An ammoxidation reactor includes an outer ring of sets of multistage cyclones suspended in the reactor. Each multistage set of cyclones includes a first stage cyclone having a first stage inlet configured to receive a reactor stream flowing up from a fluidized catalyst bed in the reactor and separate at least a portion of catalyst from the reactor stream. A ratio of square meter of first stage inlet area per square meter of available cross sectional area of the reactor is about 0.03 to about 0.05. An ammoxidation process includes reacting a hydrocarbon stream in a fluidized catalyst bed in a reactor to produce a reactor stream. The process further includes separating catalyst from the reactor stream in an outer ring of sets of multistage cyclones, each multistage set of cyclones including a first stage cyclone having a first stage inlet configured to receive a reactor stream flowing up from a fluidized catalyst bed in the reactor and separate at least a portion of catalyst from the reactor stream. A ratio of cyclone inlet velocity in meters/second to a reactor effluent velocity in meters/second is 15 or greater.

    Abstract translation: 氨氧化反应器包括悬浮在反应器中的一组多级旋风分离器的外圈。 每个多级旋风分离器包括第一级旋风分离器,其具有构造成接收从反应器中的流化催化剂床向上流动的反应器流的第一级入口,并将至少一部分催化剂与反应器流分离。 反应器每平方米可用横截面积的一级入口面积的平方米的比例约为0.03至约0.05。 氨氧化方法包括使烃流在反应器中的流化催化剂床中反应以产生反应器流。 该方法还包括在一组多级旋风分离器的外圈中将催化剂与反应器物流分离,每个多级旋风分离器包括第一级旋风分离器,该第一级旋风分离器具有第一级入口,该第一级入口配置成接收从流化催化剂床流出的反应器流 并将至少一部分催化剂与反应器流分离。 旋风进口速度(米/秒)与反应器流出速度(米/秒)的比例为15或更大。

    FEED SPARGER DESIGN FOR AN AMMOXIDATION REACTOR
    9.
    发明申请
    FEED SPARGER DESIGN FOR AN AMMOXIDATION REACTOR 审中-公开
    一种AMMOXIDATION REACTOR的进料增压器设计

    公开(公告)号:WO2015153197A2

    公开(公告)日:2015-10-08

    申请号:PCT/US2015/022224

    申请日:2015-03-24

    CPC classification number: B01J8/1827 B01J4/004 B01J2208/00911

    Abstract: Replacement of different sections of the feed sparger used in a commercial ammoxidation reactor is facilitated by using gas-tight quick-disconnect fittings to attach various sections of the sparger to one another as well as to the wall of the reactor. In addition, the diameters of the lateral conduits in these sparger sections, as well as the diameters of the feed nozzles attached to these laterals, are varied to facilitate uniform flow of feed gas through these components. The sparger can be subdivided into multiple feed sparger section arranged for better reactor control. Finally, the end caps terminating the distal ends of the sparger lateral conduits can be provided with nozzles for removal of any ammoxidation catalyst that may have inadvertently reached the sparger interior.

    Abstract translation: 在商业氨氧化反应器中使用的进料喷雾器的不同部分的替换通过使用气密的快速脱开装置来将喷射器的各个部分彼此连接以及连接到 反应堆。 另外,这些喷头段中的侧向导管的直径以及连接到这些侧面的进料喷嘴的直径是变化的,以促进进料气体通过这些元件的均匀流动。 分布器可细分为多个进料喷射器部分,以便更好地控制反应器。 最后,终止喷头横向导管的远端的端盖可设有喷嘴,用于去除任何可能无意中到达喷头内部的氨氧化催化剂。

    HEADS COLUMN OPERATION WITH INHIBITOR ADDITION
    10.
    发明申请
    HEADS COLUMN OPERATION WITH INHIBITOR ADDITION 审中-公开
    头颈部操作与抑制剂添加

    公开(公告)号:WO2015142775A1

    公开(公告)日:2015-09-24

    申请号:PCT/US2015/020860

    申请日:2015-03-17

    CPC classification number: C07C253/34 C07C255/08

    Abstract: An apparatus comprises a heads column, the heads column configured to receive a crude nitriles feed stream and to distill the crude nitriles feed stream and produce a heads column overhead stream comprising HCN at the top of the heads column, and a heads bottom liquid stream comprising acrylonitrile product at the bottom of the heads column. The apparatus comprises an overhead system comprising a condenser, the condenser configured to condense the heads column overhead stream. The apparatus comprises an acid addition system. The acid addition system is configured to add an acid to an inlet to maintain a predetermined concentration of acid in an HCN final product, and to maintain a predetermined concentration of acid in the heads column bottom liquid.

    Abstract translation: 一种装置包括头柱,头柱被配置为接收粗腈进料流并蒸馏粗腈进料流,并在头柱顶部产生包含HCN的头塔顶塔流,以及头底液流,其包含 丙烯腈产品在头柱底部。 该装置包括一个包括一个冷凝器的顶置系统,该冷凝器被配置成冷凝塔顶塔顶流。 该装置包括酸加成系统。 酸加成系统被配置为向入口添加酸以保持HCN最终产物中预定浓度的酸,并且保持头柱底部液体中预定浓度的酸。

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