Search

The combination of several physical and chemical processes for cleaning flue gas in a single hightemperature filter is a promising technology. The effect of catalytic phoresis on solid-particle collection efficiency is evaluated. A three-level mathematical model describing sedimentation of the catalytic coating on autofilter layers and the filter base layer is presented. Calculation of the filtering of highly dispersed particles with a working catalyst using the proposed model allows the best modes of filtering devices and their design and operating parameters to be chosen.

A possible thermal process for disposal of wastes from the brewing and sugar industries was studied. Information on the yields of secondary pyrolysis products (pyrogas, pyroliquid, solid residue) as a function of changes in the processing parameters was obtained. Pyrogas consisting of H2, CO, CO2, CH4, and saturated and unsaturated C2–C5 fractions had a heat of combustion of 1.79 and 1.65 MJ/m3 for spent grain and sugar-beet pulp, respectively. A universal unit allowing any type of waste with various quantities of added hydrocarbon waste to be processed was developed.

The regeneration system exercises significant influence on the efficiency and reliability of the filters. During operation of the filter it continuously increases the hydraulic resistance and the gas permeability of the filter material decreases as the deposition of the disperse phase capturable on the filter element, and to maintain the bandwidth of the filter in the filter element within the set must be periodically changed or regenerated. Thus, regeneration of a process of removing part of the dust layer with the purpose of full or partial reduction of the initial filter partitioning properties. On the basis of theoretical synthesis, physico-chemical effects of dust in layers, analysis of energy effects, developed methods of intensification of the process of regeneration of particulate filters. Pneumopulse regeneration of bag filter has been investigated, and based on it a regression equation for regeneration efficiency has been derived. It has been shown that pulse pressure exerts the dominant influence on the regeneration efficiency. The obtained model was used for assessment and prediction of the efficiency of the pneumopulse system of regeneration of bag filters at a number of structural materials producing enterprises in the Voronezh region.