Process for reducing fouling in refinery processes
    2.
    发明授权
    Process for reducing fouling in refinery processes 失效
    减少炼油工艺污染的工艺

    公开(公告)号:US06773579B2

    公开(公告)日:2004-08-10

    申请号:US10308283

    申请日:2002-12-03

    IPC分类号: C10G912

    CPC分类号: C10G9/005 C10G9/00

    摘要: A process for substantially decreasing fouling in a refinery unit. The process comprises preheating a feed to said refinery unit reactor zone and there-after introducing the feed into said refinery unit reactor zone for reaction. The feed is preheated for a time and at a temperature sufficient to cause an effective amount of any polymers and/or oligomers contained in feed to decompose or unzip to substantially reduce fouling in the refinery unit.

    摘要翻译: 一种用于在炼油厂中大幅减少结垢的方法。 该方法包括将进料预热到所述炼油单元反应器区域,并且在将进料引入所述炼油厂单元反应器区域中用于反应之后。 将进料预热一段时间并且在足以引起有效量的进料中所含的任何聚合物和/或低聚物分解或解压缩以显着减少炼油装置中的结垢的温度。

    Process for reducing fouling in coking processes
    4.
    发明授权
    Process for reducing fouling in coking processes 失效
    焦化过程中减少结垢的方法

    公开(公告)号:US06533922B2

    公开(公告)日:2003-03-18

    申请号:US09803577

    申请日:2001-03-09

    IPC分类号: C10G912

    CPC分类号: C10G9/005 C10G9/00

    摘要: A process for decreasing fouling in a refinery unit comprising preheating a hydrocarbon feed to a refinery unit reactor zone and thereafter introducing the feed into the refinery unit reactor zone for reaction. The feed contains polymers and oligomers, and is preheated for a time and at a temperature sufficient such that when the feed is introduced into the refinery unit reaction zone for reaction, the combination of the pre-heating and heating attributable to the reaction zone causes at least 85% of the polymers and oligomers contained in the feed to unzip and wherein no more than about 5 wt % coke is formed in said feed during the preheating step.

    摘要翻译: 一种用于减少炼油厂单元中的结垢的方法,包括将烃进料预热到炼油厂单元反应器区域,然后将进料引入炼油厂单元反应器区域进行反应。 进料包含聚合物和低聚物,并且预热一段时间和足够的温度,使得当将进料引入炼油厂单元反应区进行反应时,归因于反应区的预热和加热的组合将导致 包含在进料中的至少85%的聚合物和低聚物解压缩,并且其中在预热步骤期间在所述进料中不超过约5重量%的焦炭形成。

    Method and device for steam cracking comprising the injection of particles upstream of a secondary quenching exchanger
    5.
    发明授权
    Method and device for steam cracking comprising the injection of particles upstream of a secondary quenching exchanger 失效
    用于蒸汽破裂的方法和装置,包括在二次淬火换热器上游喷射颗粒

    公开(公告)号:US06183626B2

    公开(公告)日:2001-02-06

    申请号:US09202925

    申请日:1999-03-12

    IPC分类号: C10G912

    CPC分类号: F28G1/12 C10G9/002 C10G9/16

    摘要: A steam-cracking process includes the injection, at at least one point upstream from a secondary quenching indirect exchanger (4b), of particles with a mean size of between 0.02 and 4 mm, at a velocity speed in the exchanger of 20 to 180 m/s, in sufficient quantity to limit the rise in the output temperature of the effluents from the exchanger to a value that is less than 100° C. per month. At least 70% by weight of the quantity of injected particles is introduced downstream from primary quenching exchangers (4a) and upstream from the inlet to the secondary quenching exchanger. At intervals, decoking of the pyrolysis pipes and primary quenching exchangers is carried out in the presence of air.

    摘要翻译: 蒸汽裂解过程包括在二次淬火间接交换器(4b)的上游至少一个点处,平均尺寸为0.02至4mm的颗粒以20至180m的交换器中的速度进行喷射 / s,其数量足以将流出物的输出温度从交换器的上升限制到每月低于100℃的值。 至少70重量%的注入颗粒的量从一次淬火换热器(4a)的下游引入到入口到二次淬火换热器的上游。 间歇地,在空气存在下进行热解管和初级淬火换热器的脱焦。