摘要
在一个由两根滤管组成的刚性过滤器试验装置上,利用压电式压力传感器测定了过滤系统内压力的变化规律,分析了喷吹压力、脉冲宽度和喷嘴喉径对系统内压力的影响。试验结果表明,缩放喷嘴有利于脉冲反吹清灰过程;脉冲反吹时滤管内将会产生负压区,由于该负压区的存在,反吹压力和喷嘴直径都不能过大;为增大滤管内正的峰值压力,可优先考虑增大喷吹压力,也可通过增大喷嘴喉径达到此目的。
The investigation of the characteristics of transient pressure wave in filter system was conducted on an experimental apparatus with a rigid filter composed by two filter tubes, by use of the piezoelectric pressure sen-sors. The influences of jet pressure, pulse width and the diameter of the nozzle on the pressure wave in the filter sys-tem were analyzed. Experimental result showed that adopting the Laval type nozzle was advantageous to back-pulse jet-ting cleaning. It also indicated that a region of negative pressure would come forth after back-pulse jetting cleaning. Concerning the region of negative pressure, the nozzle diameter and the jet should be the decisive factors for the back-pulse.jetting system design. Increasing either the jet pressure or the nozzle diameter was an effective way to increase the positive peak pressure in the filter tube.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2002年第6期54-57,共4页
Petroleum Processing and Petrochemicals
基金
国家自然科学基金(No.59976023)
