燃料化学学报2017，Vol.45Issue(1)：1-8,8.
多喷嘴对置式水煤浆气化炉内钠元素的释放与转化
Release and transformation of sodium in an opposed multi-burner coal-water slurry gasifier
摘要
Abstract
Based on the bench-scale opposed multi-burner ( OMB ) coal-water slurry gasification experimental platform, the transformation and release characteristics of sodium during the reaction of coal in the gasifier were studied. Particles sampled at different axial distances from burner plane to top and bottom along the gasifier chamber were analyzed. After the microwave digestion and chemical fractionation analysis, the content of sodium was tested by flame atomic absorption spectrometer ( FASS) . The morphololgy and elements of particles were analyzed by scanning electron microscopy and energy spectrum application system ( SEM-EDS) . The FASS results showed that the release rate of sodium increased first then decreased with increasing distance to the burner plane. The area near the burner plane was the major release area of sodium. With the reaction in progress in the gasifier the occurrence form of sodium was transformed from water-soluble sodium and ion-exchangeable sodium into the acid-soluble sodium and residual sodium. Combining the SEM-EDS and FASS results, the spherical particles which were formed through melt minerals reacted with sodium in the gas phase to form silicate and sialic acid salt in gasifier. The increasing number of spherical particles led to an increase in the sodium content in the particles.关键词
多喷嘴对置式气化炉/颗粒物/钠/释放/赋存形态Key words
opposed multi-burner ( OMB) gasifier/particles/sodium/release/occurrence form分类
化学化工引用本文复制引用
查杰,郭庆华,龚岩,于广锁..多喷嘴对置式水煤浆气化炉内钠元素的释放与转化[J].燃料化学学报,2017,45(1):1-8,8.基金项目
The project was supported by the National Natural Science Foundation of China (51406056), the Fundamental Research Funds for the Central Universities(222201414030) and Sponsored by Shanghai Pujiang Program (15PJD011).国家自然科学基金(51406056),中央高校基本科研业务费专项资金(222201414030)和上海市浦江人才计划资助(15PJD011)本文的英文电子版由Elsevier出版社在ScienceDirect上出版(http://www. sciencedirect. com/science/journal/18725813) （51406056）
