THE INFLUENCE OF WATER SOLUBLE VARNISHES ON THE CATALYST DURING ENAMELLING PROCESS

Abstract

During the drying process of enamel wires production, enamel varnishes liberate large amounts of vapour from solvents and diluents, as well as other products from the destruction of the varnish base. An appropriate method for their destruction is catalytic combustion. This requires certain characteristics of the catalysts. The use of the new so-called water soluble enamel varnishes, increases the possibilities for catalyst poisoning. The catalytic activity of Pd-laid catalyst in destructive oxidation of organic substances in the presence of water vapour was studied on a large-scale production trials. It was established that the greater quantity of water vapour does not decrease the conversion degree. On the contrary, it is slightly increased (by 9-10%). These contribute to not only diluent economy and environmental protection, but as well retain the existing technology of enamel wires.