流化床中灰分对煤焦和生物质焦混合特性影响  

EFFECT OF COAL ASH ON THE MIXING OF COAL CHAR AND PINE CHAR IN GAS-SOLIDS FLUIDIZED BEDS

作　　者：程相龙[1,2] 李克忠[2] 张荣[2] 毕继诚[2] 

机构地区：[1]中国科学院研究生院,北京100049 [2]中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原030001

出　　处：《煤炭转化》2010年第3期76-81,共6页Coal Conversion

摘　　要：在115mm×2110mm有机玻璃圆柱型流化床中,选取具有实际意义的焦灰体系,引入描述灰分存在时煤焦和生物质焦两组分混合特性的的质量比混合指数,考察了灰分对煤焦和生物质焦混合特性的影响.结果表明,在操作气速不变的情况下,增加灰含量,松木屑焦的富集位置向上转移,煤灰的含量小于15.4%时,灰含量增加利于煤焦和松木屑焦的混合;减小灰分粒径,煤焦和松木屑焦的混合趋于均匀;提高操作气速有利于煤焦和松木屑焦的混合.此研究结果可以为煤与生物质共气化流化床气化炉的设计、运行和操作条件的确定提供一定参考.The fluidized behavior of ternary mixtures of pine char, coal char, and coal ash has been investigated. The effect of coal ash on the mixing of coal char and pine char was expressed through mixing index. It was found that decreasing ash diameter, increasing ash content in a certain range, and increasing gas velocity would improve the mixing of coal char and pine char. Moreover, the increase of ash content enriched pine char on the upper part of fluidized bed column.

关 键 词：混合 灰分 煤焦 松木屑焦 质量比 混合指数 

分 类 号：TQ028[化学工程] TQ051.13