公开(公告)号：US5358552A

公开(公告)日：1994-10-25

申请号：US922321

申请日：1992-07-30

申请人： Jeffrey M. Seibert ,  Nelson Sobel ,  Lawrence D. Weber

发明人： Jeffrey M. Seibert ,  Nelson Sobel ,  Lawrence D. Weber

IPC分类号： B01D46/24 ,  B01D46/42 ,  B01D46/54 ,  B01D46/04

CPC分类号： B01D46/0067 ,  B01D46/002 ,  B01D46/0082 ,  B01D46/0094 ,  B01D46/24

摘要： The filtration system comprises a holding vessel and a filter for clarifying contaminated influent gas streams by passing the stream through the filter. The holding vessel has an inlet port for receiving the influent gas to be filtered and for draining the vessel and an outlet port for delivering the clean effluent for further processing. When the particulate matter has clogged the filter and increases the differential pressure across the filter such that it interferes with the normal filtration operation, the particulate matter is cleaned from the filter by isolating the holding vessel from the gas stream and introducing a liquid into the holding vessel and then by backwashing the liquid so that it flows through the holding vessel and the filter in the opposite direction of the influent gas. Backwashing the liquid from the holding vessel dislodges and removes the layer of solid particulate matter on the filter surface and the quantities of particulate matter trapped within the interior of the filter. In a preferred embodiment, the liquid is backwashed by introducing a controlled quantity of pressurized gas into the clean downstream side of the vessel and rapidly opening the drain port resulting in a hydraulic pulse which forces the liquid to flow through the filter in the opposite direction of the influent gas and burst the collected solids from the filter. As the gas head expands, the solids and remaining liquid in the vessel are forced through the inlet port and drain pipe for further processing.

摘要翻译： 过滤系统包括一个保持容器和一个过滤器，用于通过使流过过滤器来澄清被污染的流入气流。 保持容器具有用于接收待过滤的流入气体和用于排出容器的入口端口和用于输送清洁流出物用于进一步处理的出口。 当颗粒物质堵塞过滤器并且增加过滤器上的压差使得其干扰正常的过滤操作时，通过将保持容器与气流分离并将液体引入到保持件中来从过滤器清洁颗粒物质 然后通过反冲洗液体使得其沿着与进水气体相反的方向流过保持容器和过滤器。 将来自保持容器的液体反冲洗移除并除去过滤器表面上的固体颗粒物质层和被捕获在过滤器内部的颗粒物质的量。 在优选实施例中，通过将受控量的加压气体引入容器的干净的下游侧并快速打开排水口，从而将液体反向冲洗，从而产生液压脉冲，迫使液体沿相反方向流过过滤器 流入气体并从过滤器中收集的固体爆裂。 当气头膨胀时，容器中的固体和剩余液体被迫通过入口和排水管进一步处理。