棉浆粕黑液固形物与苇浆黑液固形物混合燃烧性能的研究  

Combustion Properties of Mixed Solids of Linters Pulping Black Liquor and Reed Pulping Black Liquor

作　　者：苏振华[1,2] 冯文英[1,2] 张羽[1,2] 

机构地区：[1]中国制浆造纸研究院,北京100102 [2]制浆造纸国家工程实验室,北京100102

出　　处：《中国造纸》2015年第11期1-5,共5页China Pulp & Paper

摘　　要：本研究以棉浆粕黑液固形物和苇浆黑液固形物为研究对象,分析了其物化性能,测定了两种固形物以不同比例混合样品的膨胀体积及发热量,采用热重分析仪对混合固形物样品进行了热解特性研究,并进一步采用Coats-Redfern法对混合固形物样品燃烧过程的活化能和频率因子进行了求解。结果表明,棉浆粕黑液和苇浆黑液元素含量相差不是太大,二者混合固形物的燃烧是一个比较复杂的过程,大体可以分为4个阶段:1样品水分蒸发阶段;2有机物发生裂解产生大量挥发性物质;3高分子化合物进一步分解和发生炭化反应;4碱金属盐发生熔融、挥发、分解及剩余固定碳的燃烧。随着苇浆黑液固形物在混合固形物中比例的增加,固形物的活化能会降低、频率因子和膨胀体积会增加,固形物燃烧性能显著改善。The physicochemical properties of the linters pulping black liquor solid and reed pulping black liquor solid were analyzed. Volume expansion, calorific values and pyrolysis characteristics of the solid samples containing different ratios of the two solids were studied, and ac- tivation energy and frequency factor of the samples in combustion process were further calculated using coats-Redfem method. The results showed that： there were some difference between the components of the two solids. The combustion of the mixed solid was a complex process, and it could be divided into four stages ： ① drying, ② devolatilization or pyrolysis,③char burning, and ④smelt coalescence. With the in- crease of reed pulping black liquor ratio in the mixed solid, solid＇s activation energies would decrease, frequency factor and volume expansion would increase, solid combustion performance was significantly improved.

关 键 词：黑液 燃烧 碱回收 

分 类 号：X783.4[环境科学与工程—环境工程]