Characterization of Blast Furnace Slag-Ca(OH)(2) Sorbents for Flue Gas Desulfurization
文献类型：期刊论文
| 作者 | Gong, Guozhuo1,2; Ye, Shufeng1; Tian, Yajun1; Cui, Yanbin1,2; Chen, Yunfa1 |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2008-10-15 |
| 卷号 | 47期号:20页码:7897-7902 |
| 关键词 | ca(oh)(2)/fly ash sorbents slag/hydrated lime sorbents fly-ash so2 removal low-temperatures calcium hydroxide structural-properties sulfur-dioxide kinetics absorbent |
| ISSN号 | 0888-5885 |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | A series of sorbents for flue gas SO2 scrubbing have been prepared from hydrated lime (HL) and blast furnace slag (BFS) with the factorial experiment design method. The sorbents were characterized and tested for SO, reactivity in a differential fixed-bed reactor. It was found that, due to the formation of calcium silicate hydrates (CSHs), the reactivities of the sorbents prepared were higher than that of Ca(OH)(2) alone. The present sorbent gave better utilization of the Ca originated from the Ca(OH)(2) precursor and provided additional utilization capacity of the Ca derived from BFS. The present sorbents were mesoporous, and their specific surface areas were linearly correlated with their mesopore volumes. When the weight ratio of BFS/HL varied between 1/9 and 3/7, the SO2 capture of the sorbents prepared was independent of specific surface area. When the weight ratio of BFS/HL varied between 7/3 and 9/1, the SO, capture was seen to increase linearly with specific surface area. Among the four process variables studied for the sorbent prepared in this work, the weight ratio of BFS/HL was found to be the most significant for the specific surface area of the sorbents. The optimum BSF/HL ratio looked to be around 9/1. The second and the third process variables studied were hydration time and the ratio of water/solid, respectively. The optimum hydration time was about 10 h. while the optimum water/solid ratio was 25/1. The last process variable studied was slurrying temperature. Slurrying temperature (T) had little effect on the specific surface area of the BFS/HL sorbent in the range 50-80 degrees C. This is useful for preparing high-performance silica-enhanced desulfurization sorbents for dry and semidry flue gas desulfurization processes, taking advantage of the waste BFS. |
| 英文摘要 | A series of sorbents for flue gas SO2 scrubbing have been prepared from hydrated lime (HL) and blast furnace slag (BFS) with the factorial experiment design method. The sorbents were characterized and tested for SO, reactivity in a differential fixed-bed reactor. It was found that, due to the formation of calcium silicate hydrates (CSHs), the reactivities of the sorbents prepared were higher than that of Ca(OH)(2) alone. The present sorbent gave better utilization of the Ca originated from the Ca(OH)(2) precursor and provided additional utilization capacity of the Ca derived from BFS. The present sorbents were mesoporous, and their specific surface areas were linearly correlated with their mesopore volumes. When the weight ratio of BFS/HL varied between 1/9 and 3/7, the SO2 capture of the sorbents prepared was independent of specific surface area. When the weight ratio of BFS/HL varied between 7/3 and 9/1, the SO, capture was seen to increase linearly with specific surface area. Among the four process variables studied for the sorbent prepared in this work, the weight ratio of BFS/HL was found to be the most significant for the specific surface area of the sorbents. The optimum BSF/HL ratio looked to be around 9/1. The second and the third process variables studied were hydration time and the ratio of water/solid, respectively. The optimum hydration time was about 10 h. while the optimum water/solid ratio was 25/1. The last process variable studied was slurrying temperature. Slurrying temperature (T) had little effect on the specific surface area of the BFS/HL sorbent in the range 50-80 degrees C. This is useful for preparing high-performance silica-enhanced desulfurization sorbents for dry and semidry flue gas desulfurization processes, taking advantage of the waste BFS. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CA(OH)(2)/FLY ASH SORBENTS ; SLAG/HYDRATED LIME SORBENTS ; FLY-ASH ; SO2 REMOVAL ; LOW-TEMPERATURES ; CALCIUM HYDROXIDE ; STRUCTURAL-PROPERTIES ; SULFUR-DIOXIDE ; KINETICS ; ABSORBENT |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000259904900047 |
| 公开日期 | 2013-10-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/2753]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gong, Guozhuo,Ye, Shufeng,Tian, Yajun,et al. Characterization of Blast Furnace Slag-Ca(OH)(2) Sorbents for Flue Gas Desulfurization[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2008,47(20):7897-7902. |
| APA | Gong, Guozhuo,Ye, Shufeng,Tian, Yajun,Cui, Yanbin,&Chen, Yunfa.(2008).Characterization of Blast Furnace Slag-Ca(OH)(2) Sorbents for Flue Gas Desulfurization.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,47(20),7897-7902. |
| MLA | Gong, Guozhuo,et al."Characterization of Blast Furnace Slag-Ca(OH)(2) Sorbents for Flue Gas Desulfurization".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 47.20(2008):7897-7902. |
入库方式： OAI收割
来源：过程工程研究所
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