New technologies for gas purification

Abstract

EN: Relevance and statement of the problem. The main goal of methods for purifying industrial emissions and gases is to achieve high efficiency and the degree of capture of harmful and dangerous substances of gas-air mixtures formed at the enterprise as a result of technological, preparatory and transportation processes, as well as to eliminate the occurrence of secondary air pollution [1]. All modern cleaning methods can be divided into two groups: mechanical filters, which are a perforated partition of one design or another, and purifiers in force fields (gravitational, centrifugal, magnetic, electrostatic) [2,3,4]. The disadvantages of the first are: low dirt holding capacity; increase in pressure drop as holes or pores in the partition become clogged; For gravity cleaning (sedimentation): long cleaning time; large dimensions of purifiers; low productivity; dependence on particle density, temperature and other conditions; restrictions on the degree of contamination of gases supplied for cleaning; large overall dimensions, increasing with increasing productivity or cleaning fineness, etc. All this leads to the need to periodically replace or regenerate the filter element, install alarm devices, etc. It should be noted in passing that the dustiness of the environment is often so great that simply replacing filter elements in hydraulic systems introduces more pollution than wear and tear over the entire period of operation.