扇形筒 Scallops

扇形筒是径向流反应器外网内构件系统的重要组成部分,平行分布于容器内壁上,内表面限定了催化剂床层的外侧,通常安装于径向反应器内用于流体介质的分布于收集。顶部盖板用于封闭中心管/内网与扇形筒之间的空隙,流体方向可以由内而外,也可以由外而内。常规通过顶部人孔装入,固定于容器壁上的支撑圈上。在安装扇形筒组件时,每一个扇形筒紧贴下一个扇形筒,每一个扇形筒处理平行于其轴向的流量,处理量的大小取决于其横截面积、开孔率等因素。反应器的总处理量由单个扇形筒的处理量共同组成,在高温操作下,为了避免高温点接触到容器壁上,建议容器壁内部作耐火材料或其它内衬处理。主要应用于催化重整、合成氨、CCR、PX、苯乙烯、合成氨的装置内。 Scallops assembly is forming the outer screen component of a radial flow system。 Their general shape is extending parallel to the inner vessel wall。 Their inner surface delimits the outer side of the catalyst bed。 They are usually installed inside vertical reactors and they distribute or collect the flow。Cover deck is closing the gap between inner screen component and scallops。 Flow direction can be out-wards or inwards。Scallops are usually introduced through the vessel top manhole。 They are standing on a support ring attached to the vessel wall。• Scallops are standing against the inner vessel surface as hollow conduits distributing/collecting the gas flow from their inner side。 Each one is placed adjacent to the next one as part of the scallops-set。 Each scallop cross section is handling a flow rate which is parallel to the scallop’s axis with a flow capacity limited to the cross section area。 Total reactor capacity is the sum of all individual scallops flow rate。applications such as Gas treatment, Platforming, reforming, CCR, ammonia converter, styrene,etc。

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