Production of cellulose-containing intermediates from the wood of broad-leaved and coniferous species using its treatment under the conditions of explosive autohydrolysis

Abstract

The influence of the technological parameters of the process of explosive autohydrolysis of the wood of aspen, pine, and spruce on the yield and composition of cellulose-containing intermediates has been studiecL It has been established that with a rise in temperature and an increase in the time of explosive autohydrolysis the yield of technical cellulose falls and the content of Kiirschner cellulose rises. The optimum parameters have been found for the oxidative destruction of the residual lignin in the cellulose-containing intermediates by hydrogen peroxide in an alkaline medium, which enables their cellulose content to be raised to 95--96%.