A modified Solvay process with low-temperature calcination of NaHCO3 using monoethanolamine: Solubility determination and thermodynamic modeling
文献类型：期刊论文
| 作者 | Wang, Qiaoxin1,2; Li, Zhibao2 |
| 刊名 | AICHE JOURNAL
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 65期号:10页码:12 |
| 关键词 | monoethanolamine phase transition solubility Solvay process thermodynamic |
| ISSN号 | 0001-1541 |
| DOI | 10.1002/aic.16701 |
| 英文摘要 | An energy-saving, modified Solvay process for dense soda ash production was proposed to replace the high-temperature, calcination step of NaHCO3. We found NaHCO3 completely decomposed into anhydrous, Na2CO3 at 353 K in a mixed-solvent containing at least 65 wt% of monoethanolamine (MEA), which is an amine-absorbent prevalently used for CO2 capture. A chemical model was built after the determination of solubilities and through data regression for the solid-liquid system: Na-Cl-NH4-CO3-HCO3-MEA-H2O. Reparameterization for paired-ion interactions were performed via the mixed-solvent electrolyte model. Thermodynamic analysis elucidated the shift in ion dominance from HCO3- to CO32+, thereby providing the phase transition mechanisms. An exploratory, fed-batch experiment was implemented to verify the accuracy of the model, for which the obtained solids were in the form of saleable, dense soda ash products; bulk densities up to 1.01 g/cm(3) were achieved in the laboratory. |
| WOS关键词 | SODIUM-CARBONATE ; CO2 ; MEA ; ELECTROLYTES ; ABSORPTION ; GLYCOL ; SYSTEM |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000483710300003 |
| 出版者 | WILEY |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/30732]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Li, Zhibao |
| 作者单位 | 1.Univ Chinese Acad Sci, Dept Chem Engn, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Qiaoxin,Li, Zhibao. A modified Solvay process with low-temperature calcination of NaHCO3 using monoethanolamine: Solubility determination and thermodynamic modeling[J]. AICHE JOURNAL,2019,65(10):12. |
| APA | Wang, Qiaoxin,&Li, Zhibao.(2019).A modified Solvay process with low-temperature calcination of NaHCO3 using monoethanolamine: Solubility determination and thermodynamic modeling.AICHE JOURNAL,65(10),12. |
| MLA | Wang, Qiaoxin,et al."A modified Solvay process with low-temperature calcination of NaHCO3 using monoethanolamine: Solubility determination and thermodynamic modeling".AICHE JOURNAL 65.10(2019):12. |
入库方式： OAI收割
来源：过程工程研究所
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