International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

The article presents information on the regeneration of filter elements (filter components) made of tin-phosphorus bronze powders that were tested during polyethylene production in the unloading unit of the ethylene polymerization reactor for cleaning hydrocarbon compounds from polyethylene powder particles. It was found that during the testing period, the filter elements met the requirements specified in the equipment regulatory documents. After completing the tests, two thermal regeneration cycles were carried out: at LLC “Stavrolen” and at O.V. Roman Powder Metallurgy Institute. It was found that in the first case, the filter element throughput was restored to 67.5% of the initial value, and in the second case, to 97.2%, which indicates the multiple regeneration possibility of spent powder filter elements when used to clean hydrocarbon compounds from polyethylene powder particles.

The results of comparative studies of the structure and properties of two-layer filter materials based on finely dispersed nickel powder are presented, in which the substrates were formed using hollow spheres and carbamide as pore-forming agents. The properties of the layers forming the structures of these two-layer materials, as well as the composite biporous material properties consisting of a mixture of hollow spheres of finely dispersed nickel powder and finely dispersed nickel powder are studied. The prospects for using hollow spheres to create two-layer filter materials are shown.