The process substantially free of sulphur for the production of pulp from lignocellulosic material chemistry going on, and the recovery of substances used in the above process quu00ecmicas

摘要

"The process substantially free of sulphur for the production of pulp chemistry going on from material lignocelulu00casico and recovery of substances quu00ecmicas used in said process.The process of the present invention refers to the process substantially free of sulphur for the manufacture of chemical pulp with an integrated system of recovery for recovering substances u00d7ICAS formation of pulp.The process is executed in various stages involving physical and chemical treatment of lignocellulosic material in order to increase the accessibility of the lignocellulosic material to reactions with agent.Of basic oxygen delignification.Cellulose spent liquor comprising components of lignin and chemical reagents expenses is completely or partially oxidized in a gas generator in which the flow of natural gas and the flow of subStu00e2ncias alkaline chemicals and chemical reagents is formed for recycle and reuse in the process of subsequ00b3ente pulp making.