Methods for identifying high fouling hydrocarbon and for mitigating fouling of process equipment
    2.
    发明授权
    Methods for identifying high fouling hydrocarbon and for mitigating fouling of process equipment 有权
    识别高结垢碳氢化合物和减轻工艺设备结垢的方法

    公开(公告)号:US08609429B2

    公开(公告)日:2013-12-17

    申请号:US13299178

    申请日:2011-11-17

    IPC分类号: G01N25/20

    摘要: Methods for determining the fouling propensity of a hydrocarbon stream and for reducing fouling are provided. In one method, the fouling propensity of a hydrocarbon stream is determined by obtaining a parameter value indicative of the fouling propensity at no less than two different temperatures, and an activation energy of fouling by the hydrocarbon stream is derived therefrom. In another method, the thus obtained parameter value at no less than two different temperatures and the activation energy are used to select proper heating fluids and operating temperature and to determine whether to add an antifoulant to the hydrocarbon stream to reduce fouling at a given temperature.

    摘要翻译: 提供了确定烃流的污染倾向和减少结垢的方法。 在一种方法中,通过在不少于两个不同的温度下获得指示结垢倾向的参数值来确定烃流的结垢倾向,并且由此导出烃流的结垢的活化能。 在另一种方法中,由此获得的不少于两个不同温度的参数值和活化能用于选择适当的加热流体和操作温度,并确定是否在烃流中加入防污剂以减少给定温度下的结垢。

    Mitigation of plugging in hydroprocessing reactors
    4.
    发明授权
    Mitigation of plugging in hydroprocessing reactors 有权
    减少加氢处理反应堆的堵塞

    公开(公告)号:US09333497B2

    公开(公告)日:2016-05-10

    申请号:US14192995

    申请日:2014-02-28

    摘要: The behavior of a monitored condition over time for a reactor or reaction system can be analyzed using groupings or windows of data to identify anomalous features in the time-average values. Anomalous features can be identified based on a threshold value generated from the analysis. Based on identification of an anomalous feature, a corrective action can be taken. For example, when the monitored condition is the pressure drop across a catalyst bed, detection of an anomaly can indicate the time to initiate a wash process for the catalyst bed before a large drop in catalyst activity occurs. By detecting an anomaly at an earlier point in time, a wash cycle can be initiated earlier so that the wash is more effective at restoring the catalyst bed to a desired condition.

    摘要翻译: 可以使用数据分组或窗口来分析反应堆或反应系统的监测条件随时间的行为,以识别时间平均值中的异常特征。 可以基于从分析生成的阈值来识别异常特征。 基于异常特征的识别,可采取纠正措施。 例如,当监测条件是催化剂床上的压降时,异常的检测可以指示在催化剂活性发生大的下降之前催化剂床的启动洗涤过程的时间。 通过在较早的时间点检测异常,可以更早地启动洗涤循环,使得洗涤在将催化剂床恢复到所需条件下更有效。

    Superheating atomizing steam with hot FCC feed oil
    8.
    发明授权
    Superheating atomizing steam with hot FCC feed oil 失效
    用热FCC原料油过热雾化蒸汽

    公开(公告)号:US06352639B2

    公开(公告)日:2002-03-05

    申请号:US09735779

    申请日:2000-12-13

    IPC分类号: C10G1100

    摘要: An atomizing gas, such as steam, and a hot fluid comprising a hot liquid to be atomized, are passed under pressure, through separate fluid conduits in a heat exchange means, in which the hot liquid heats the steam to a superheat temperature, by indirect heat exchange. The superheated steam is then injected into the hot fluid, which comprises a two-phase fluid comprising steam and the hot liquid, subsequent to the superheated steam injection. The two-phase fluid is passed through an atomizing means, such as an orifice, into a lower pressure atomizing zone, which causes the steam to expand and atomize the liquid into a spray of liquid droplets. The two-phase fluid is formed before or as a consequence of the superheated steam injection and is preferably steam-continuous when passed through the atomizing means. This process is useful for atomizing a hot feed oil for a fluid cat cracking (FCC) process.

    摘要翻译: 雾化气体,例如蒸汽,以及包含待雾化的热液体的热流体在压力下通过热交换装置中的分开的流体导管通过,其中热液体将蒸汽加热至过热温度,间接 热交换。 然后将过热蒸汽注入到热流体中,该热流体包括在过热蒸汽注入之后包括蒸汽和热液体的两相流体。 两相流体通过诸如孔口的雾化装置进入较低压力的雾化区,这使得蒸汽膨胀并将液体雾化成液滴喷雾。 两相流体在过热蒸汽注入之前或之后形成,并且优选在通过雾化装置时是蒸汽连续的。 该方法可用于雾化用于流动性猫裂解(FCC)方法的热进料油。