FIELD: production of cellulose, namely method and plant for generating heat and electric power in cellulose-producing factory, especially in sulfate-cellulose factory.
SUBSTANCE: according to invention liquor remained from digesting liquor at making wood cellulose is concentrated and burned in recovery boiler at presence of biogenic fuels. During such process heat power of exhaust gases generated at burning is taken off and if it is desirable it is converted to electric power. According to invention bark or similar wood waste materials subjected to drying till moisture content no more than 30% are used as biogenic fuel. Then said waste materials are gasified for producing fuel gas to be supplied into recovery boiler. Plant for performing the method includes apparatuses for drying and gasifying bark; unit for feeding bark incorporated in apparatus for bark gasifying is joined to unit for discharging dried bark incorporated in drying apparatus. Unit for discharging fuel gas is connected with recovery boiler for feeding fuel gas generated from gasified bark into it. In cellulose producing factory separate boiler is generally used for burning bark.
EFFECT: lowered investment cost, simplified design, maintenance and operation of equipment due to elimination of necessity of using separate boiler for burning bark, enhanced efficiency of using power.
27 cl, 2 dwg
