A green process for producing Na2S from waste Na2SO4 through hydrogen agglomerate fluidized bed reduction of BaSO4
文献类型：期刊论文
| 作者 | Du, Zhan2; Liu, Fan1; Liu, Jiayi2; Pan, Feng2; Fan, Chuanlin2; Zhang, Jianbo3 |
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2022-06-25 |
| 卷号 | 355页码:12 |
| 关键词 | Agglomerate fluidized bed reduction BaSO 4 looping Metathetical reaction Anhydrous Na 2 S |
| ISSN号 | 0959-6526 |
| DOI | 10.1016/j.jclepro.2022.131816 |
| 英文摘要 | A green process is proposed to produce Na2S from waste Na2SO4 through hydrogen agglomerate fluidized bed reduction of BaSO4. In the new process, BaSO4 acts as the circulating medium, and the synthesis of Na2S from waste Na2SO4 is performed via a two-step approach. First, BaSO4 is reduced to BaS by hydrogen at high temperatures. Then, the reduction product BaS is put into the Na2SO4 solution to prepare Na2S through the metathetical reaction. Simultaneously, insoluble BaSO4 is regenerated by filtration and drying, and it can be reused in the reduction reaction. Experimental results showed that the looping material BaSO4 could be reduced to a conversion rate above 80% at 900-950 degrees C in a conical fluidized bed by agglomerate fluidization. The introduction of Na2SO4 could greatly accelerate the reduction rate of BaSO4, and detailed analyses of the reduction kinetics indicated that the addition of Na2SO4 could strongly catalyze the reduction of BaSO4 by reducing the apparent reaction activation energy, which was realized through the synergistic effect of Na2SO4 and Na2S. The consumption of BaSO4 in the reduction reaction was nearly equal to that regenerated in the metathetical reaction, and the reactivity of BaSO4 remained almost the same as the original reactivity during multiple cycles, which indicated the strong recyclability of BaSO4 in the new process. After dehydration treatment of the Na2S solution by evaporation concentration, cooling crystallization, and vacuum drying, anhydrous Na2S of high purity was obtained eventually. Compared to traditional coal-based reduction approaches, the new process is more environmentally friendly, highly efficient, and low-cost. |
| WOS关键词 | SODIUM-SULFATE ; PHASE-CHANGE ; KINETICS ; PARTICLES ; BARITE ; SIZE |
| 资助项目 | National Natural Science Foundation of China[21908227] |
| WOS研究方向 | Science & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000804045100005 |
| 出版者 | ELSEVIER SCI LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/53681]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Du, Zhan |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Ansteel Res Inst Vanadium & Titanium Iron & Steel, State Key Lab Vanadium & Titanium Resources Compre, Panzhihua 61700, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, Zhan,Liu, Fan,Liu, Jiayi,et al. A green process for producing Na2S from waste Na2SO4 through hydrogen agglomerate fluidized bed reduction of BaSO4[J]. JOURNAL OF CLEANER PRODUCTION,2022,355:12. |
| APA | Du, Zhan,Liu, Fan,Liu, Jiayi,Pan, Feng,Fan, Chuanlin,&Zhang, Jianbo.(2022).A green process for producing Na2S from waste Na2SO4 through hydrogen agglomerate fluidized bed reduction of BaSO4.JOURNAL OF CLEANER PRODUCTION,355,12. |
| MLA | Du, Zhan,et al."A green process for producing Na2S from waste Na2SO4 through hydrogen agglomerate fluidized bed reduction of BaSO4".JOURNAL OF CLEANER PRODUCTION 355(2022):12. |
入库方式： OAI收割
来源：过程工程研究所
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