Apparatus and method of cleaning a transfer line heat exchanger tube
    1.
    发明申请
    Apparatus and method of cleaning a transfer line heat exchanger tube 有权
    清洗输送管热交换器管的装置和方法

    公开(公告)号:US20080128330A1

    公开(公告)日:2008-06-05

    申请号:US11634301

    申请日:2006-12-05

    IPC分类号: C10G75/04

    CPC分类号: C10G9/002 C10G9/16

    摘要: An apparatus for on-line cleaning and maintaining the cleanliness of a transfer line exchanger tube is provided. In one embodiment, the apparatus includes a housing having a first end, a second end and a longitudinal axis, the housing further including a first inlet for introducing a flushing fluid to the transfer line exchanger tube, the first inlet disposed proximate the first end of the housing, a second inlet for providing a product effluent comprising hydrocarbons and an outlet for placing in fluid communication with an inlet of the transfer line exchanger tube and a critical flow nozzle or flow control orifice, the critical flow nozzle or flow control orifice in fluid communication with the first inlet of the housing. Systems and processes for cleaning and maintaining the cleanliness of a transfer line exchanger are also disclosed.

    摘要翻译: 提供了一种用于在线清洁并保持传输线换热器管的清洁度的装置。 在一个实施例中,该装置包括具有第一端,第二端和纵向轴线的壳体,该壳体还包括用于将冲洗流体引入传送线交换器管的第一入口,第一入口邻近第一端 壳体,用于提供包括烃的产物流出物的第二入口和用于与输送管线交换器管的入口和临界流动喷嘴或流量控制孔口流体连通的出口,流体中的临界流动喷嘴或流量控制孔口 与房屋的第一个入口通信。 还公开了用于清洁和保持输送管线交换器的清洁度的系统和方法。

    Hinged pressure relief tray
    6.
    发明授权
    Hinged pressure relief tray 失效
    铰链压力释放盘

    公开(公告)号:US4133852A

    公开(公告)日:1979-01-09

    申请号:US722871

    申请日:1976-09-13

    摘要: A hinged tray, preferably for use in fractionation towers, capable of relieving small but sudden pressure surges caused by the flashing of relatively small amounts of water remaining in the tower feed or in the stripping steam. By hinging the trays distortion and upset normally caused by the flashing which could cause damage to the trays is substantially eliminated, as well as costly shutdown of the towers for tray repair. The hinged portion of the tray is stiffened by means of a frame and a counterweight can be provided to eliminate tray vibration during normal operation.

    摘要翻译: 优选用于分馏塔的铰链托盘,其能够缓解由塔进料或汽提蒸汽中残留的相对少量水的闪蒸引起的小但突然的压力波动。 通过铰链托盘,通常由可能导致托盘损坏的闪光引起的变形和不正常现象基本上被消除,以及用于托盘修理的塔的昂贵关闭。 托盘的铰接部分通过框架加固,并且可以提供配重以在正常操作期间消除托盘振动。

    Close-coupled transfer line heat exchanger unit
    9.
    发明授权
    Close-coupled transfer line heat exchanger unit 失效
    紧耦合传输线热交换器单元

    公开(公告)号:US4457364A

    公开(公告)日:1984-07-03

    申请号:US359197

    申请日:1982-03-18

    摘要: In thermal cracking of hydrocarbons, especially steam cracking to light olefins, a transfer line heat exchanger unit is provided in which cracked gas flows from a furnace into heat exchange tubes, which comprises a distributor having an inlet for said gas and two or three diverging branches forming with said distributor a wye or tri-piece for passage of gas, each branch having along its length a substantially uniform cross-sectional area and being in fluid flow communication with a respective cooling tube. Unfired residence time and pressure drop are reduced, thereby improving selectivity to ethylene.

    摘要翻译: 在烃的热裂解,特别是对轻质烯烃的蒸汽裂化中,提供了一种传输线热交换器单元,其中裂化气体从炉流入热交换管,其包括具有用于所述气体的入口和两个或三个发散分支 与所述分配器形成用于气体通过的叶片或三件件,每个分支具有沿着其长度的基本上均匀的横截面积并且与相应的冷却管流体连通。 降低了停用时间和压降,从而提高了对乙烯的选择性。