摘要
空气湿度是产生复吸的重要条件，湿度越高复吸的程度越高；自然条件下，温度越高复吸速度越快；产物粒度越小复吸速度和复吸程度越大。深度干燥煤的复吸水主要发生在煤堆表面。研究了高温烟气干燥褐煤的水分复吸性能，结果表明，在6％～11％的全水含量范围内，干燥煤复吸后水分升高幅度基本一致。在此全水范围内干燥煤全水高低不会影响复吸结果。
The moisture content in the ambient is the key. The higher the moisture content, the more moisture is re-absorbed. The high temperature and fine particle size promote the moisture re-absorption to speed and extend. The re-absorption occurs in the particle surface with the deep dewatering lignite. The moisture re-absorption ability of the dewatering lignite with high temperature flue gas is experimentally investigated. It is found that for the deep drying lignite with moisture of 6% - 11% , the moisture content increase caused by re-absorption is almost same and the moisture content in the dewatering lignite has no influence on the moisture re-absorption.
出处
《洁净煤技术》
CAS
2010年第5期73-75,32,共4页
Clean Coal Technology
关键词
褐煤干燥
复吸
粒径
lignite drying
re-absorption
particle size
