| 多尺寸填料塔中CO2吸收过程的实验和模拟 |
| 陈健, 童川, 彭勇, 汤志刚 |
| 清华大学 化学工程联合国家重点实验室, 北京 100084 |
| Experiments and simulations of carbon dioxide absorption process in packed columns of different sizes |
| CHEN Jian, TONG Chuan, PENG Yong, TANG Zhigang |
| State Key Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China |
摘要:
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| 摘要随着二氧化碳吸收法捕集技术的不断发展, 需要研究吸收过程的规模放大和模拟。在200 mm和600 mm的2种不同尺寸填料塔中进行了CO2吸收实验, 采用新的规整填料有效传质面积关联式, 进行了基于速率模型的过程模拟, 对比了不同传质模型。结果表明: 最适用的传质模型是液膜阻力模型, 2个吸收塔的气体出口CO2摩尔分数计算结果与实验值的平均相对误差分别为1%和3%。说明在过程模拟中使用合适的传质模型和规整填料传质面积关联式可以有效预测不同尺寸吸收塔中CO2捕集效果。 | |||
| 关键词 ：二氧化碳,吸收,填料塔,放大,过程模拟 | |||
| Abstract：The development of absorption processes for carbon capture needs studies of process scale-up and modeling CO2 absorption was measured in 200 mm and 600 mm diameter packed columns. An effective mass transfer area correlation for structured packings was used to simulate the process with a rate-based method and different mass transfer models. The results show that the most suitable mass transfer model is the film resistance model with average relative errors in the CO2 mole fraction of 1% and 3% in the two columns. Thus, this mass transfer model and mass transfer area correlation are valid for structured packings and CO2 absorption in various size columns could be predicted by this simulation. | |||
| Key words：carbon dioxideabsorptionpacked columnscale-upprocess modeling | |||
| 收稿日期: 2015-07-06 出版日期: 2016-01-12 | |||
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| 引用本文: |
| 陈健, 童川, 彭勇, 汤志刚. 多尺寸填料塔中CO2吸收过程的实验和模拟[J]. 清华大学学报（自然科学版）, 2015, 55(12): 1348-1353. CHEN Jian, TONG Chuan, PENG Yong, TANG Zhigang. Experiments and simulations of carbon dioxide absorption process in packed columns of different sizes. Journal of Tsinghua University(Science and Technology), 2015, 55(12): 1348-1353. |
| 链接本文: |
| http://jst.tsinghuajournals.com/CN/10.16511/j.cnki.qhdxxb.2015.24.013或 http://jst.tsinghuajournals.com/CN/Y2015/V55/I12/1348 |
图表:
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| 图1 直径600mm 吸收塔中规整填料的传质面积测量结果 |
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| 图2 不同尺寸填料塔的有效传质面积结果对比图 |
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| 图3 吸收过程模拟示意图 |
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| 表1 直径200mm 吸收塔过程模拟工况 |
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| 表2 气液流动模型分类 |
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| 表3 液膜阻力模型分类 |
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| 图4 不同模型计算结果对比值 |
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| 图5 多组条件下吸收过程模拟计算结果 |
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| 图6 直径600mm 吸收塔中CO2 脱除率实验值和计算值对比图 |
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| 表4 直径200mm 吸收塔实验数据和模拟计算结果 |
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| 表5 直径600mm 吸收塔实验数据和模拟计算结果 |
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