Abstract
This article examines structural laminar plastics in ShMK electrofilters to determine the possibilities of using these materials for producing load-carrying structures of the precipitation system with plastic electrodes. The research was conducted on chemically, thermally, and moisture-resistant difficult-to-combust commercial textolites PT and PTG (graphitized) in the form of sheets with a thickness of respectively 10 and 4.5 mm. Industrial tests on textolites were conducted in an ShMK-9.6 electrofilter installed in the first stage of gas scrubbing in the flashing section of the sulfuric acid contact shop for 3900 h. The chemical stability of the materials was evaluated on the basis of the changes of the weight, linear dimensions, and external appearance of the specimens (screening tests), and on the basis of the variation of the weight and short-term strength in tensile testing. It is established that the textolites PT and PTG with a thickness of 10 mm can be used in the load-carrying structure consisting of two strips with electrode plates fixed between them. The use of 400 kg of textolite for producing suspension beams for sulfuric acid plate electrofilters with electrodes made of plastics made it possible to save 715 kg of lead and 610 kg of carbon steel.
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