Selective chlorination of CaO from titania slag by CO+Cl-2 mixtures in fluidized bed | |
Wang, Qiao1,2; Zhu, Qingshan1; Fan, Chuanlin1; Zhang, Gengyu1,2; Li, Hongzhong1 | |
刊名 | THERMOCHIMICA ACTA |
2016-09-20 | |
卷号 | 640期号:SEP页码:66-73 |
关键词 | Selective chlorination Kinetics Titania slag CaO TiO2 Cl-2 |
ISSN号 | 0040-6031 |
英文摘要 | This paper presents a facile approach to selectively decrease the CaO content in titania slag from 1.09 to 0.18 wt.% under a selective chlorination atmosphere of Cl-2 and CO. Thermodynamic analysis indicated that a predominance area exists to selectively chlorinate CaO with a low reduction potential. The intrinsic chlorination kinetics indicated that both the high partial pressure of chlorine and high temperature were advantageous to increase the chlorination selectivity,of CaO. Under the guidance of the thermodynamic and intrinsic kinetics, selective chlorination kinetics of CaO from titania slag were conducted at 1173-1273 K and were represented by the pore-blocking rate law. The present study indicated that a high concentration of reactant gases with a low reduction potential at high temperature could simultaneously overcome the inner mass transfer resistance while maintaining a high chlorination selectivity. The optimized partial pressures of Cl-2 and CO were 0.8 and 0.2 atm, respectively, and the temperature was 1273 K. (C) 2016 Elsevier B.V. All rights reserved. |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Thermodynamics ; Chemistry, Analytical ; Chemistry, Physical |
研究领域[WOS] | Thermodynamics ; Chemistry |
关键词[WOS] | LOW-TEMPERATURE ; ILMENITE ; KINETICS ; EXTRACTION ; RUTILE ; MODEL ; CARBOCHLORINATION ; BENEFICIATION ; PARTICLES ; CHLORIDE |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000383934600009 |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/21339] |
专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Qiao,Zhu, Qingshan,Fan, Chuanlin,et al. Selective chlorination of CaO from titania slag by CO+Cl-2 mixtures in fluidized bed[J]. THERMOCHIMICA ACTA,2016,640(SEP):66-73. |
APA | Wang, Qiao,Zhu, Qingshan,Fan, Chuanlin,Zhang, Gengyu,&Li, Hongzhong.(2016).Selective chlorination of CaO from titania slag by CO+Cl-2 mixtures in fluidized bed.THERMOCHIMICA ACTA,640(SEP),66-73. |
MLA | Wang, Qiao,et al."Selective chlorination of CaO from titania slag by CO+Cl-2 mixtures in fluidized bed".THERMOCHIMICA ACTA 640.SEP(2016):66-73. |
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