Trembus I. The obtaining of straw pulp by organosolvent pulping methods of delignification

The dessertation is devoted to studing of organosolvent processes obtaininq the straw pulp.Organosolvent methods of pulping wheat straw (2AS, ACC and ASAE) which provide reception quality fibrous semi-products output from 46 to 88 % by weight absolutely dry raw material were designed, scientifically motivated and experimental confirmed. Influence of main technological parameters on quality factors of organosolvent straw pulps was explored. Regression equations of the pulping processes of straw were received with use the method of the full factorial experiment. Optimum parameters of the organic solvent delignification of wheat straw by method of optimization with using generalized functions of desirability by Harington were received. The positive catalytic effect of anthraquinone in processes of 2AS and ACC pulping the wheat straw it was shown. The possibility of bleaching the organosolvent straw celluloses without using of molecular chlorine it was studied. Selectivity indexes of the separation lignine from wheat straw were defined. It was installed, that the most selectivity are characterized ASAE and ACC method of pulping from wheat straw. Practical suitability of ASAE and ACC straw pulps in production of the writing paper of the mark A №1 and packing paperboard of the mark KT-25 was shown. Technological scheme of production of pulp from wheat straw with ASAE method was offered. Feasibility study of practical realization of developed ASAE method of obtaining the straw pulp was presented.