Lischuk V. The fundamentals for the beamhouse processes in the leather production

On the basis of the determined features of beamhouse processes and developed thermal-diffusion theory of mass-transfer, which is experimentally realized in the production, resources-economy, eco-friendly technologies of the leather raw materials processing are created. Optimization of the functional parameters of the technological solution with the properties of the intermediate product and leather are established by analytical and mathematical modeling and the optimization of unhairing-liming of raw materials from cattle is conducted. Effective technologies of single- and double-stage liming of leather raw materials are developed. The solving of this important scientific and technical problems provided reduction of treatment duration in 1,8-2,1 times, increase of quality index of products of enterprise by 58 %, decrease of water consumption in 2,3 times and ecologically harmful chemical materials or their complete replacement by technogenically safe ones. Accordingly the concentration of waste of ecologically dangerous materials in the industrial sewage is reduced, calcium sulfides and hydroxides accordingly in 1.7 and 4.0 times and products of the keratin destruction in 30 times. During 1995-2010 years the developed technologies of single- and double-stage liming with hair saving are applied in industry. Herewith, the area output of «Wet-blue» half-finished item is increased on 2,6 and 4,7 % respectively. 2021 ton raw hide materials were spared from which 288864 m2 leather were received. The economic effect about 19011183 hrn was received.