| 磷石膏强化氨法CO2捕集机理与模型 |
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| 引用本文： | 李季,周加贝,朱家骅,夏素兰,葛敬,商剑峰,崔文鹏,刘项. 磷石膏强化氨法CO2捕集机理与模型[J]. 化工学报, 2015, 66(8): 3218-3224. DOI: 10.11949/j.issn.0438-1157.20150741 |
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| 作者姓名： | 李季 周加贝 朱家骅 夏素兰 葛敬 商剑峰 崔文鹏 刘项 |
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| 作者单位： | 1.四川大学化学工程学院, 四川 成都 610065;2.中国石化中原油田普光分公司, 四川 达州 635000;3.中国石化中原油田分公司天然气处理厂, 河南 濮阳 457061;4.中国石化南京工程公司, 江苏 南京 211100 |
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| 基金项目： | 国家自然科学基金项目(21276161)；国家科技支撑计划课题(2013BAC12B01)。 |
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| 摘 要： | 基于化学活性颗粒强化气液吸收机理,建立了磷石膏悬浮液强化氨法烟气CO2捕集模型。以液膜内量纲一传质距离λ*为特征参数,增强因子E=1/λ*+qβλ*/2。用恒温反应器在不同搅拌转速及磷石膏颗粒固含量下实验测定CO2吸收增强因子对模型进行检验,结果表明:随颗粒固含量由5%增加到30%(质量分数),增强因子由1.69增加到2.10;而随搅拌转速从150 r·min-1增加到300 r·min-1,增强因子仅由1.75略增到1.80,表明磷石膏颗粒固含量及溶解速率是影响增强因子的控制性因素。实验结果与模型预测值吻合良好, 偏差小于10%。
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| 关 键 词： | 吸收 增强因子 传质 磷石膏颗粒 CO2矿化 |
| 收稿时间： | 2015-05-29 |
| 修稿时间： | 2015-06-09 |
Mechanism and model of ammonia-based carbon dioxide trapping enhanced by gypsum particles |
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| LI Ji,ZHOU Jiabei,ZHU Jiahua,XIA Sulan,GE Jing,SHANG Jianfeng,CUI Wenpeng,LIU Xiang. Mechanism and model of ammonia-based carbon dioxide trapping enhanced by gypsum particles[J]. Journal of Chemical Industry and Engineering(China), 2015, 66(8): 3218-3224. DOI: 10.11949/j.issn.0438-1157.20150741 |
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| Authors: | LI Ji ZHOU Jiabei ZHU Jiahua XIA Sulan GE Jing SHANG Jianfeng CUI Wenpeng LIU Xiang |
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| Affiliation: | 1.School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China;2.Puguang Branch of SINOPEC Zhongyuan Oilfield, Dazhou 635000, Sichuan, China;3.Nature Gas Processing Plant of SINOPEC Zhongyuan Oilfield, Puyang 457061, Henan, China;4.SINOPEC Nanjing engineering Co., Ltd., Nanjing 211100, Jiangsu, China |
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| Abstract: | Based on reaction plane theory, a mass transfer model of gas-liquid reaction absorption enhanced by reactive particles was established for the absorption of CO2 into aqueous ammonia suspension with gypsum particles. The absorption enhancement factor was derived theoretically as E=1/λ*+qβλ*/2 with the dimensionless reaction position λ* as the characteristic parameter. The validation experiments of CO2 absorption into the suspension was carried out in a thermostatic reactor and the enhancement factors were measured with different solids loadings at selected speeds. The results showed that the enhancement factor increased from 1.69 to 2.10 when the solids loadings varied from 5% to 30% (mass); and it changed sparingly from 1.75 to 1.80 as the stirred speed varied from 150 to 300 r·min-1. It revealed that the enhancement factors were controlled by the solids loading and dissolution rate of gypsum particles. The experimental data agreed well with the model prediction, with a maximum deviation of 10%. |
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| Keywords: | absorption enhancement factor mass transfer gypsum particles CO2 mineralization |
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