Abstract The pleated filter cartridges are widely used in industrial production to control particulate emissions and recover valuable particulate matter, where pulse jet cleaning is a major method for filter regeneration. However, for strong hygroscopic and adhesive dust such as Polyacrylamides (PAM), during pulse-jet cleaning the compressed air forms a low temperature zone at the nozzle and will release water to the environment, causing the particles to adhere on the filter after absorbing moisture, resulting in ineffective filter regeneration. Therefore, a higher cleaning pressure or other methods are required to clean the filter surface. In this article, we have proposed a method to collect adhesive dust using dry gas injection and verified its feasibility through pilot experiments. The compressed air injection source was replaced with nitrogen, the curve of system pressure drop shows that nitrogen has good performance in the peeling of adhesive dust from the surface of the pleated filter cartridge. This highlights the effect of the moisture content in the cleaning compressed air on the regeneration of filters clogged with adhesive hygroscopic particles. Therefore, the feasibility of the nitrogen injection was validated, which provides a basis for the future systematic research of industry to collect adhesive dust.

中文翻译：

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用氮气脉冲喷射清洁被粘性吸湿性粉尘堵塞的褶皱滤筒

摘要 褶皱滤芯广泛应用于工业生产中控制颗粒物排放和回收有价值的颗粒物，其中脉冲喷射清洗是过滤器再生的主要方法。但是，对于聚丙烯酰胺（PAM）等强吸湿性和粘附性粉尘，在脉冲喷射清洁过程中，压缩空气在喷嘴处形成低温区，将水分释放到环境中，导致颗粒吸湿后粘附在过滤器上，导致过滤器再生无效。因此，需要更高的清洁压力或其他方法来清洁过滤器表面。在本文中，我们提出了一种使用干气喷射收集粘尘的方法，并通过中试实验验证了其可行性。将压缩空气注入源替换为氮气，系统压降曲线表明，氮气对褶皱滤芯表面的粘尘剥离具有良好的性能。这突出了清洁压缩空气中的水分含量对被粘性吸湿颗粒堵塞的过滤器再生的影响。因此，验证了注氮的可行性，为未来工业收集粘尘的系统研究提供了依据。