公开(公告)号：WO2014043026A1

公开(公告)日：2014-03-20

申请号：PCT/US2013/058745

申请日：2013-09-09

Applicant: NICHOLSON, Stewart

Inventor： NICHOLSON, Stewart

IPC: B04C11/00 ,  G01N7/00 ,  G01N9/36

CPC classification number: G01N19/10 ,  G01N1/2247 ,  G01N25/56

Abstract: A humidity sensor and filter assembly are housed within a cylindrical barrel that is positioned in a process gas stream such as combustion flue gas. A portion of sample flue gas is conducted through the barrel and the filter assembly past the sensor located inside the filter so that accurate humidity measurements can be taken. Unwanted flue gas particulate matter accumulated on the outside surface of the filter is ejected by pulsed purge gas admitted into the filter to reverse the flow through the filter. In one embodiment a heat exchange chamber preheats the purge gas. In another embodiment the pulsed purge is supplied by a reciprocal piston contiguous with the internal volume of the filter that reverses the flow through the filter using the process gas.

Abstract translation: 湿度传感器和过滤器组件容纳在定位在诸如燃烧烟道气的过程气流中的圆筒内。 样品烟气的一部分通过筒体和过滤器组件穿过位于过滤器内的传感器，以便可以进行精确的湿度测量。 积聚在过滤器外表面上的不需要的烟道气体颗粒物质通过进入过滤器的脉冲清洗气体喷射，以逆转过滤器的流动。 在一个实施例中，热交换室预热净化气体。 在另一个实施例中，脉冲清洗由与过滤器的内部容积邻接的往复式活塞提供，该反向活塞通过处理气体使流过过滤器的流体反向。