PROCESS FOR PRODUCING PULP

The process for producing pulp according to the present invention consists in the subsequent steps of an aqueous treatment of a vegetable stock at a temperature within the range of from 110 to 170.degree.C under a pressure of from 2 to 7 atm.g. for a period of from 0.3 to 4 hours at a weight ratio of the vegetable stock to water of 1:2-4 respectively; a simultaneous impregnation and a cooking of said vegetable stock in a solution of nitric acid at a temperature of from 70 to 90.degree.C for 0.5-3 hours; cooking at a temperature of from 100 to 130.degree.C under a pressure of from 1 to 4 atm.g. for 0.3-0.5 hour; an alkali extraction of the vegetable stock; decontamination of the gaseous cooking products by mixing thereof with the air in a volumetric ratio of 1:0.5-1 respectively, and treatment with the spent liquor resulting from the stage of alkali extraction. The process according to the present invention makes it possible to increase the vield of pulp and substantially improve its quality characteristics.