Patent ID: 6379495
Filing Date: 2002-04-30
Classification: D21C

Abstract:
A process for the production of cellulose paper pulps from vegetative masses, comprising the following steps:sterilizing and dosing a mass suitable to form a culture medium at a temperature of at least 120Â° C.; mixing said sterilized and dosed mass with a dosed inoculum and heated sterile water, in such a quantity to achieve a desired temperature and concentration of said mass; conditioning and reacting by stirring said inoculated mass in a controlled atmosphere of CO2 and O2 and a sterile environment having a controlled temperature and pH for 20 to 300 hours, for producing suitable enzyme mixes; elementizing said mass containing said enzymes and soaking up the same with an extraction fluid to form a suspension; extracting said enzymes in said extraction fluid by pressing and backwashing said suspension for obtaining an enzyme extract, and separating an extracted solid resulting from said pressing; elementizing, separating, cleaning and selecting a vegetative material for the production of said cellulose paper pulp for obtaining a useful vegetative mass and waste material; compacting said useful vegetative mass for eliminating air and reducing its volume; mixing said compacted mass with said enzyme extracts in a dosed quantity and with heated water for obtaining a vegetative mass having a solid mass content between 10 and 50% by weight; conditioning and reacting said vegetative mass mixed with said enzymes by stirring in a controlled atmosphere of CO2 and O2 and at a controlled temperature and pH for 5 to 50 hours and washing with water to obtain a washed cellulose paper pulp with a low content of residual modified lignin and a washing fluid containing soluble substances that were originally contained in said vegetative material together with the soluble substances; cooking and bleaching said washed cellulose pulp; and purifying and disposing of said washing fluid.