The utility model relates to a filter device for a top-down pump, which comprises a double-layer cylindrical filter cover and a filter screen; the double-layer cylindrical filter cover comprises an outer ring filter cover and an inner ring filter cover, the inner ring filter cover and the outer ring filter cover are both provided with several mesh holes, the inner ring filter cover is arranged in the outer ring filter cover, and the mesh hole of the inner ring filter cover is smaller than that of the outer ring filter cover. The filter mesh is fixed on both sides of the inner ring filter cover, and the height of the filter mesh is the same as that of the double layer filter cover. The filter mesh is provided with several mesh holes, and the mesh hole of the filter mesh is smaller than that of the inner ring filter cover. The distance between the inner ring filter cover, the outer ring filter cover and the mesh and mesh with different apertures on the filter screen reduces the impact speed of salt and coke powder in the coking process, plays the role of multi-layer blocking salt and coke powder, isolates the salt and coke powder to make them settle, so that the top circulation pump will not block, reduces the cost and improves the production efficiency.
【技术实现步骤摘要】
顶循泵的过滤装置
本技术涉及一种过滤装置,特别是涉及一种顶循泵的过滤装置。
技术介绍
延迟焦化工艺是一种将重质油转化成干气、液化气、焦化汽油、焦化柴油、焦炭等的深度热烈化工艺。生产不同型号的汽油时,作为中间产品的焦化汽油需要控制不同的干点,焦化过程中,当干点控制较低时,分馏塔的顶循泵容易出现结盐堵塞机泵,此外焦化工艺中产生的焦粉聚集成块,也造成馏塔的顶循泵堵塞,最终导致顶循泵上量不好甚至抽空,使顶循泵损坏或影响生产工艺,现有技术中在顶循泵的泵入口端有单层过滤网,过滤效果非常差,盐块和焦粉会堵塞顶循泵。
技术实现思路
本技术的主要目的在于,提供一种顶循泵的过滤装置,所要解决的技术问题是使拦截延迟焦化工艺中进入顶循泵的盐块以及焦粉块,从而更加适于实用。本技术的目的及解决其技术问题是采用以下技术方案来实现的。依据本技术提出的一种顶循泵的过滤装置,其包括双层圆柱形过滤罩和过滤网;所述的双层圆柱形过滤罩包括外圈过滤罩和内圈过滤罩,所述内圈过滤罩和外圈过滤罩均设有若干个网孔,所述内圈过滤罩设置在所述外圈过滤罩内,所述内圈过滤罩的内径比外圈过滤罩的内径小2-5cm;所述过滤网固定在所述 ...
【技术保护点】
1.一种顶循泵的过滤装置,其特征在于,包括双层圆柱形过滤罩和过滤网;所述的双层圆柱形过滤罩包括外圈过滤罩和内圈过滤罩,所述内圈过滤罩和外圈过滤罩均设有若干个网孔,所述内圈过滤罩设置在所述外圈过滤罩内,所述内圈过滤罩的内径比外圈过滤罩的内径小2‑5cm,所述内圈过滤罩的网孔小于所述外圈过滤罩的网孔;所述过滤网固定在所述内圈过滤罩中间对应两侧,过滤网的高度与双层过滤罩的高度一致,所述过滤网上设有若干网孔,所述过滤网的网孔小于所述内圈过滤罩的网孔。
【技术特征摘要】
1.一种顶循泵的过滤装置,其特征在于,包括双层圆柱形过滤罩和过滤网;所述的双层圆柱形过滤罩包括外圈过滤罩和内圈过滤罩,所述内圈过滤罩和外圈过滤罩均设有若干个网孔,所述内圈过滤罩设置在所述外圈过滤罩内,所述内圈过滤罩的内径比外圈过滤罩的内径小2-5cm,所述内圈过滤罩的网孔小于所述外圈过滤罩的网孔;所述过滤网固定在所述内圈过滤罩中间对应两侧,过滤网的高度与双层过滤罩的高度一致,所述过滤网上设有若干网孔,所述过滤网的网孔小于所述内圈过滤罩的网孔。2.根据权利要求1所述的顶循泵的过滤装置,...
【专利技术属性】
技术研发人员:王树国,刘占友,祝开心,
申请(专利权)人:盘锦浩业化工有限公司,
类型:新型
国别省市:辽宁,21
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