677.66:621.763 and M. A. AskarovThe essence of the structure and formation of a fibre-or dispersely filled knit composite filter bag was revealed. Handbook process parameters and the results of tests on experimental samples are presented. The applicability of the technology for manufacturing sorption composite filter bags with fibre and disperse fillers was demonstrated.Textile fabrics are a strong support in mechanical filtration in capturing industrial emissions. Harmful toxic substances can only be captured with adsorbents incorporated in the filter material by impregnation (solutions of functionally active polymers and copolymers), spraying, application on the surface or inside in spinning the material, and by formation of the base of active fibres itself [1].Information on the successful use of pilot-industrial units with chemisorption fibres for removal of toxic emissions (HF, HCl, NH 3 , CO, SO 2 , acid aerosols) from air; capture of copper, nickel, cobalt, lead, and zinc ions in electrolysis; extraction of silver, gold, platinum, palladium, and lithium from aqueous medium in different sectors; treatment of drinking water to remove heavy metal ions and radionuclides, sulfate, nitrate, chloride anions, bacterial pathogens, etc., is reported in [2]. The author drew the attention of investigators to the necessity of obtaining materials with a higher content of chemically active groups while preserving the mechanical properties that ensure their processing into textile articles.Sorption, chemisorption in particular, fibres have low mechanical properties, which makes it difficult to spin yarn from them for fabricating fabrics. All attempts to increase the mechanical properties (increasing the number of punctures, the adhesive binder content or content of strong fibres in nonwovens) are accompanied by worsening of the sorption properties of the filter materials.In view of the important pressure loss of fabrics in filtration, the insufficiently high mechanical properties of nonwovens, and the labor intensity of forming the finished bag shape, we developed [3, 4] technology for production of seamless composite filter bags made from cross-knit honeycomb cloth on circular knitting machines. The size and parameters of the fabric cells are regulated within the technological possibilities of the machines. The fabric is formed by alternating layers of single weaves and a double row that joins them, and until binding of the binder weave, between single layers, filler weft is fed to the cell. The filler weft can be a heterogeneous porous ribbon, a bulky yarn or knitted tube previously filled with fibre or disperse substances.The essence of the proposed technical solution consists of forming honeycomb cloth in two-bed circular knitting machines. The cell sizes and parameters are regulated within the processing possibilities of the machines. The cloth is formed by alternating layers of single weaves and binding a double row, and before binding the binding weave, a filler weft is fed between single layers into the cell. The ...
The article considers the issues of international cooperation of prosecution authorities in providing legal assistance in the criminal sphere. In addition, this article is devoted to the issues of interaction of prosecution agencies against crime within the framework of regional international organizations. To do this, extradition as a legal phenomenon is analyzed in detail, the procedures carried out on the territory of the Republic of Uzbekistan to extradite a person wanted by the competent authorities of another state are described. Documents and normative acts on the basis of which extraordinary measures are carried out are given. The authors focus on the peculiarities of the criminal procedure laws of the CIS countries, which complicate the extradition procedure. Concrete steps are described that allow optimizing the work of the extradition institution and minimizing possible contradictions related to the peculiarities of national legislations.
This article discusses the essence of the formation of knitted filled filter cloths, in which the mass fraction of the filler exceeds more than 50% of the total surface density. The new method was tested in the production environment of the ‘Gani Rakhimov Ishonch’ enterprise (Samarkand) by modernizing the existing equipment, and also a pilot batch of products and final products were produced for filtering fruit juices.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.