燃料化学学报2016，Vol.44Issue(9)：1051-1058,8.
不同反应气氛下准东高钠煤中钠的迁移转化与积灰特性
Transformation and deposition characteristics of sodium in Zhundong high sodium coal under different reaction atmospheres
摘要
Abstract
In order to obtain the influences of different reaction atmospheres on transformation and deposition characteristics of sodium in Zhundong high sodium coal for circulating fluidized bed technology, gasification (reducing atmosphere) and combustion (oxidizing atmosphere) experiments were carried out, respectively, at 950℃ for Xinjiang SEH high sodium coal in a 0. 4 t/d circulating fluidized bed experimental apparatus. The results show that Na in fly ash and deposition ash exists mainly as NaCl. Na and Cl are easier to be reserved in bottom ash and fly ash during gasification comparing with combustion, and correspondingly less Na and Cl enter into gas phase. Part of NaCl is sulfurized by SO2 and more stable Na2 SO4 is produced under combustion atmosphere and condenses on the surface of ash deposition probes. More fine particulates are produced during combustion and perform worse deposition problems. The corrosion of HCl to the metal wall exists in the process of SEH coalsˊcombustion and gasification.关键词
准东高钠煤/循环流化床/燃烧/气化/钠迁移/积灰Key words
Zhundong high sodium coal/circulating fluidized bed/combustion/gasification/migration of Na/deposition分类
化学化工引用本文复制引用
杨少波,宋国良,宋维健,齐晓宾..不同反应气氛下准东高钠煤中钠的迁移转化与积灰特性[J].燃料化学学报,2016,44(9):1051-1058,8.基金项目
The project was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(XDA07030100) and the International Science &Technology Cooperation Program of China (2014DFG61680).中国科学院战略性先导科技专项(A类)(XDA07030100)和国家国际科技合作专项(2014DFG61680)资助 （XDA07030100）
