文献类型：期刊文献

英文题名：Interaction of potassium with mineral matter in coal during steam gasificati

作者：Wang, Xing-Jun[1]; Chen, Fan-Min[1]; Liu, Hai-Feng[1]; Yu, Guang-Suo[1]; Wang, Fu-Chen[1]

机构：[1] Key Lab. of Coal Gasification and Energy Chemical Eng. of Min. of Educ., Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China

年份：2013

卷号：41

期号：1

起止页码：9

外文期刊名：Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology

收录：EI(收录号：20131016077850)

语种：英文

外文关键词：Calcium - Chemical reactors - Gasification - Minerals - Mullite - Potash - X ray diffraction

摘要：The catalysis of potassium carbonate on the steam gasification of coals was investigated in a fixed-bed reactor. The interaction of potassium with mineral matter in ten coals was examined. The gasification residue after leaching with water was analysed by X-ray diffraction (XRD) and X-ray fluorescence (XRF). The results show that potassium aluminum silicate is the major crystallite derived from the interaction of potassium with mineral matter. As the ash is in low calcium content, the molar ratio of non-recoverable potassium to aluminum is one. However, as the ash is in high calcium content, the calcium can fix a large number of aluminum in the form of gehlenite (Ca2Al2SiO7), which would inhibit the deactivation of potassium.