Apparatus and process for controlling temperature of heated feed directed to a flash drum whose overhead provides feed for cracking
    41.
    发明授权
    Apparatus and process for controlling temperature of heated feed directed to a flash drum whose overhead provides feed for cracking 有权
    用于控制加热进料温度的装置和方法,所述加热的进料被引导到闪蒸罐,所述闪蒸鼓的塔顶提供用于裂化的进料

    公开(公告)号:US07413648B2

    公开(公告)日:2008-08-19

    申请号:US11445006

    申请日:2006-06-01

    摘要: An apparatus and process are provided for cracking hydrocarbonaceous feed, wherein the temperature of heated effluent directed to a vapor/liquid separator, e.g., flash drum, whose overhead is subsequently cracked, can be controlled within a range sufficient so the heated effluent is partially liquid, say, from about 260 to about 540° C. (500 to 1000° F.). This permits processing of a variety of feeds containing resid with greatly differing volatilities, e.g., atmospheric resid and crude at higher temperature and dirty liquid condensates, at lower temperatures. The temperature can be lowered as needed by: i) providing one or more additional downstream feed inlets to a convection section, ii) increasing the ratio of water/steam mixture added to the hydrocarbonaceous feed, iii) using a high pressure boiler feed water economizer to remove heat, iv) heating high pressure steam to remove heat, v) bypassing an intermediate portion of the convection section used, e.g., preheat rows of tube banks, and/or vi) reducing excess oxygen content of the flue gas providing convection heat.

    摘要翻译: 提供了一种用于裂解含烃原料的装置和方法,其中引导到蒸汽/液体分离器(例如,其塔顶馏出物被破裂的闪蒸鼓)的加热流出物的温度可以控制在足够的范围内,使得加热的流出物是部分液体 例如约260至约540℃(500至1000°F)。 这允许在较低温度下处理含有具有极大不同挥发性的残渣的各种进料,例如高温度下的常压渣油和粗油,以及脏液体冷凝物。 根据需要,可以根据需要降低温度:i)向对流部分提供一个或多个附加的下游进料入口,ii)增加添加到烃类进料中的水/蒸汽混合物的比例,iii)使用高压锅炉给水节能器 以除去热量,iv)加热高压蒸汽以除去热量,v)绕过所使用的对流段的中间部分,例如预热排管排,和/或vi)减少提供对流热的烟道气的过量氧含量 。

    Vapor/liquid separation apparatus for use in cracking hydrocarbon feedstock containing resid
    42.
    发明授权
    Vapor/liquid separation apparatus for use in cracking hydrocarbon feedstock containing resid 有权
    用于裂解含有残渣的烃原料的蒸气/液体分离装置

    公开(公告)号:US07311746B2

    公开(公告)日:2007-12-25

    申请号:US10851434

    申请日:2004-05-21

    IPC分类号: B01D45/12

    摘要: A highly efficient vapor/liquid separation apparatus for treating a flow of vapor/liquid mixtures of hydrocarbons and steam comprises a substantially cylindrical vertical drum having an upper cap section, a middle section comprising a circular wall, a lower cap section, a tangential inlet to introduce hydrocarbon/steam mixtures, an overhead vapor outlet, and a bottom outlet for liquid. The vessel also comprises an annular structure located in the middle section, comprising i) an annular ceiling section extending from the circular wall and ii) a concentric internal vertical side wall to which the ceiling section extends. The annular structure blocks upward passage of vapor/liquid mixtures along the circular wall beyond the ceiling section, and surrounds an open core having sufficient cross-sectional area to permit vapor velocity low enough to avoid significant entrainment of liquid.

    摘要翻译: 用于处理烃和蒸汽的蒸气/液体混合物流的高效蒸汽/液体分离装置包括基本上圆柱形的垂直鼓,其具有上盖部分,中间部分包括圆形壁,下盖部分,切向入口 引入烃/蒸汽混合物,塔顶蒸汽出口和液体的底部出口。 所述容器还包括位于所述中间部分中的环形结构,包括i)从所述圆形壁延伸的环形顶部区域,和ii)所述天花板部分延伸到的同心内部垂直侧壁。 环形结构阻止蒸汽/液体混合物沿着圆形壁向上​​通过超过天花板部分,并且围绕具有足够横截面面积的开放芯体,以允许足够低的气体速度以避免显着夹带液体。