褐煤干燥后水分复吸实验研究.pdfVIP

2009 年中国电机工程学会年会  褐煤干燥后水分复吸的实验研究 1 1 2 1 1 1 1 王冲 ，张君 ，邵徇 ，李向武 ，张奉春 ，董建勋 ，辛志光 （1、中电投蒙东能源集团公司，内蒙古通辽市，028000；2 、煤科总院北京煤化工研究分院， 北京，100013 ） EXPERIMENTAL INVESTIGATION ON MOISTURE RE-ABSORPTION OF DEWATERING LIGNITE 1 1 2 1 1 1 WANG Chong , ZHANG Jun , SHAO Xun , LI Xiang-wu , ZHANG Feng-chun , DONG Jian-xun , 1 XIN Zhi-guang (1. CPI Mengdong Energy Group Co., ltd., Tongliao, Inner Mongolia, 028000; 2. Beijing Research Institute of Coal Chemistry, Beijing, 100013) ABSTRACT: The moisture re-absorption performance of KEY WORD: lignite ；drying ；re-absorption ；particle size the drying lignite is important for the lignite drying process and technology. The factors affecting the moisture 摘要：褐煤干燥后的复吸是影响褐煤干燥技术路线的主 re-absorption are discussed. It is believed that the moisture 要问题。本文研究了影响复吸的主要因素。空气湿度是 content in the ambient is the key. The higher the moisture 产生复吸的重要条件，湿度越高复吸的程度越高；自然 content, the more moisture is re-absorbed. The high 条件下，温度越高复吸速度越快；产物粒度越小复吸速 temperature and fine particle size promote the moisture 度和复吸程度越大。深度干燥煤的复吸水主要发生在煤 re-absorption to speed and extend. The re-absorption occurs 堆表面。实验研究了高温烟气干燥褐煤的水份复吸性能， in the particle surface with the deep dewatering lignite. The moisture re-absorption ability of the dewatering lignite with 结果表明，在 6~11%的全水含量范围内，干燥煤复吸后 high temperature flue gas is experimentally investigated. It 水分升高幅度基本一致。在此全水范围内干燥煤全水高 is found that for the deep drying lignite with moisture of 低不会影响复吸结果。 6~11%, the moisture co