The relationship between peak pressure and parameters of pulse-jet cleaning in a sintered plastic filter

Sintered plastic filters are recently favored in industrial filtration systems because of their advantage of high filtration precision and long service life. In order to embody experimental characterization of pulse-jet cleaning of sintered plastic filters, tests were concluded on a self-made pulse-jet cleaning experimental platform. The cleaning characteristics of sintered plastic filters were investigated with varied pulse-jet parameters of tank pressure, nozzle diameter, and jet distance (the distance between nozzle and filter opening). The relationship between pressure distribution and pulse-jet cleaning parameters was established. The results showed that peak positive pressure on the corresponding sintered plastic filter inner wall increased with the increasing tank pressure. With the increasing jet distance, peak pressure first increased, then decreased, and with the increasing nozzle diameter, the optimum jet distance decreased gradually. At the optimum jet distance, the peak pressure with a nozzle diameter of 6 mm was the best, which was confirmed through the jet flow photographed by schlieren. The mathematical model obtained by curve fitting was s = (d - a)/2$$. These results indicated that there was a direct relationship between the peak pressure and the parameters of pulse-jet cleaning in a sintered plastic filter. It provided theoretical support and application foundation for industrial dust-cleaning design.Implications: Sintered plastic filter is a new generation of high efficiency dust collector. Generally, its characteristics can be divided into three major categories as follows. 1) In terms of materials, the sintered plastic filter is made of PE substrate and coated with PTFE membrane, which makes it have stable chemical properties and can be used in high humidity, high oil, and other special situations. 2) In terms of dust cleaning, sintered plastic filter has high dust-cleaning efficiency of ultra-fine dust because of the unique membrane, which is not only limited to the surface of the filter plate, but also penetrates into the interior of the interstice. 3) In terms of structure, the sintered plastic filter is a rigid wavy porous structure filter of nine cavities formed by special sintering process of polymer material. This filter elements of integrated rigid design make its physical structure strong, not easy to deform and damage, and with a longer service life than traditional filters (bag filters and pleated fabric filter cartridges). In order to embody experimental characterization of pulse-jet cleaning of sintered plastic filters, tests were concluded on a self-made pulse-jet cleaning experimental platform described in this article. The cleaning characteristics of sintered plastic filters were investigated with varied pulse-jet parameters of tank pressure, nozzle diameter, and jet distance (the distance between nozzle and filter opening). The relationship between pressure distribution and pulse-jet cleaning parameters was established. These results indicated that there was a direct relationship between the peak pressure and the parameters of pulse-jet cleaning in a sintered plastic filter. It provided theoretical support and application foundation for industrial dust-cleaning design.