APPARATUS FOR HYDROLYSIS AND DRYING OF LIGNOCELLULOSE MATERIAL Russian patent published in 1997 - IPC

FIELD: production of material capable of selfpolymerization to obtain formed product such as cardboard or plate. SUBSTANCE: apparatus has two devices for hydrolization and drying of lignocellulose material. Both devices have pressure vessel and temperature vessel for creating circulating steam flow heated by heat exchange and adapted to treat material during transportation and exchange device. Hydrolysis device has working zone for hydrolyzation of lignocellulose material supplied in flow, heat exchange device, water supply device, device for supplying hydrolyzed lignocellulose material, device for discharge of partially hydrolyzed material to second-stage device without getting of circulation flow of saturated steam to second system and device for discharge of excessive steam into pipeline. Second device has zone for further hydrolyzation and drying of partially hydrolyzed material in steam flow and in circulation flow of overheated steam, device for receiving partially hydrolyzed material from first device, device for discharge of hydrolyzed and dried material, circulation flow of overheated stream through pipeline into at least one zone for further hydrolyzation and drying and device for discharge of excessive steam. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 11 cl, 3 dwg