PROCESS FOR REMOVING NITRILE IN ETHERIFICATION PROCESS
    2.
    发明申请
    PROCESS FOR REMOVING NITRILE IN ETHERIFICATION PROCESS 审中-公开
    过程中除去氮的方法

    公开(公告)号:WO1997045392A1

    公开(公告)日:1997-12-04

    申请号:PCT/US1997008933

    申请日:1997-05-20

    CPC classification number: C07C41/06 C07C41/44 C07C43/046 C07C43/043

    Abstract: This invention provides an improved etherification process (20, 30) that reduces the amount of acidic ion-exchange resin catalyst that is deactivated by nitriles. This process uses a water phase to remove nitriles from a hydrocarbon phase followed by an alcohol phase to remove the nitriles from the water phase. A hydrogenation catalyst is used to convert the nitriles to amines so that they can be more easily removed from the alcohol phase. This invention also provides a process to remove nitriles (10, 60). This invention further provides an improved etherification process that reduces the amount of acidic ion-exchange resin catalyst that is deactivated by nitriles. These processes use a water phase to remove nitriles from a hydrocarbon phase followed by a stream, or fuel gas, phase to remove the nitriles from the water phase.

    Abstract translation: 本发明提供一种改进的醚化方法(20,30),其减少由腈失活的酸性离子交换树脂催化剂的量。 该方法使用水相从烃相中除去腈,然后用醇相从水相中除去腈。 使用氢化催化剂将腈转化为胺,使得它们可以更容易地从醇相中除去。 本发明还提供一种除去腈(10,60)的方法。 本发明还提供了一种改进的醚化方法,其减少由腈失活的酸性离子交换树脂催化剂的量。 这些方法使用水相从烃相中除去腈,随后是流或燃料气相以从水相中除去腈。

    METHOD AND APPARATUS FOR CONTROLLING CONDENSATION OF GASEOUS HYDROCARBON STREAM
    9.
    发明申请
    METHOD AND APPARATUS FOR CONTROLLING CONDENSATION OF GASEOUS HYDROCARBON STREAM 审中-公开
    控制气体烃流体冷凝的方法和装置

    公开(公告)号:WO1998026243A1

    公开(公告)日:1998-06-18

    申请号:PCT/US1997018899

    申请日:1997-10-14

    Abstract: In a cryogenic condensation scheme used for benzene removal in a process for liquefying natural gas, two series connected separation columns (10, 12) are provided with a feedstream (44) precooled in a heat exchanger (16) to a temperature that will at least condense the benzene component. In the first column (50), benzene is absorbed and vapor/liquid is separated with the liquid passed to the second column (60). The second column (60) provides an overhead vapor stream (68) conserved for processing to LNG, and a bottom stream comprising NGL. The cooling for condensation of gaseous feed in the heat exchanger is controlled by automatically manipulating bypass flow (38) around the heat exchanger responsive to measured vapor flow (80) from the second separation column. Accordingly, the amount of liquid (36) condensed is responsive to the flow rate of vapor withdrawn overhead from the second separation column.

    Abstract translation: 在用于液化天然气的方法中用于苯去除的低温冷凝方案中,两个串联的分离塔(10,12)设置有在热交换器(16)中预冷却的进料流(44)至少至少 冷凝苯成分。 在第一列(50)中,苯被吸收并且蒸汽/液体被分离,液体通过第二塔(60)。 第二列(60)提供保存用于LNG处理的顶部蒸气流(68)和包含NGL的底部流。 通过根据来自第二分离塔的测量的蒸汽流(80)自动地操纵热交换器周围的旁路流(38)来控制热交换器中气态进料冷凝的冷却。 因此,冷凝的液体(36)的量响应于从第二分离塔排出的蒸气的流速。

    CORE-IN-SHELL HEAT EXCHANGERS FOR MULTISTAGE COMPRESSORS
    10.
    发明申请
    CORE-IN-SHELL HEAT EXCHANGERS FOR MULTISTAGE COMPRESSORS 审中-公开
    多层压缩机的核心换热器

    公开(公告)号:WO1998002698A1

    公开(公告)日:1998-01-22

    申请号:PCT/US1997009937

    申请日:1997-06-11

    Abstract: In multistage refrigeration compression (10), where liquid refrigerant withdraw from a core-in-shell type heat exchanger (40) connected to a high compression stage (16) is passed to a similar exchanger (70) connected to a lower compression stage (14), liquid level stability in the higher compression stage exchanger (40) is improved by providing an enlarged surge volume. A baffle plate (50) transversing a lower portion of the shell divides the shell into a cooling zone that contains the cores, and a discharge zone that is part of the surge volume. The height of the baffle is selected to facilitate maintenance of at least a minimum functional liquid level in the shell. Liquid refrigerant withdrawn from the discharge zone of the high-stage shell is supplied to the cooling zone of a shell connected to a lower compression stage. The liquid level in the shell is maintained by manipulating flow to liquid refrigerant that is flashed into the cooling zone of the higher compression stage shell.

    Abstract translation: 在多级制冷压缩(10)中,从连接到高压缩级(16)的壳内型换热器(40)中抽出的液态制冷剂被传送到与低压级(16)连接的类似的交换器(70) 通过提供增大的浪涌体积来改善较高压缩级交换器(40)中的液位稳定性。 穿过壳体下部的挡板(50)将壳体分成包含芯体的冷却区域和作为浪涌体积的一部分的排放区域。 选择挡板的高度以便于维持壳中的至少最小功能液位。 从高级壳体的排放区域排出的液体制冷剂被供给到连接到较低压缩级的壳体的冷却区域。 通过操纵流入冷却到较高压缩级壳体的冷却区域中的液体制冷剂来维持壳体中的液位。

Patent Agency Ranking