摘要
年产1-2万吨草浆厂的碱回收,建议采用4台双螺旋挤浆机串联提取黑液,使黑液提取率达到95%以上;黑液固形物采用简易喷射炉燃烧,在燃烧炉后安装方形喷淋蒸发器和旋风分离器,把稀黑液浓缩至32-35%浓度,再送往喷射炉燃烧,苛化采用常规间歇苛化、沉清;过滤洗涤,碱回收率可达70%。
It was put forward that the solution of alkali recovery for straw pulp mills of small scale in this paper. The technology flow chart was showed as follows: (1) Four screw extrusion machine in series to abstract black liquor, the abstracting rate reach at more than 95%; (2) Simple jeting furnace was used to burn solid from black liquor; (3) Squareness spraying evaporator and cyclone seperator for condensing black liquor to the solid content from 32% to 35%; (4)Normal interruption equipment for bastification depositing, filtration and washing, the alkali recovery rate reaching at 70%.
出处
《上海造纸》
2005年第4期11-14,共4页
Shanghai Paper Making