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首页> 外文期刊>Building and Environment >Validation and application of adsorption breakthrough models for the chemical filters used in the make-up air unit (MAU) of a cleanroom
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Validation and application of adsorption breakthrough models for the chemical filters used in the make-up air unit (MAU) of a cleanroom

机译：洁净室补充空气装置（MAU）中使用的化学过滤器吸附突破模型的验证和应用

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摘要

The dynamic adsorption capacity calculated from the breakthrough curves progressively decreased with the increases in the face velocity, suggesting that the effect of intraparticle diffusion and possibly the rate of adsorption as the rate-limiting mechanism were increasingly more profound for a chemical filter-type adsorber configuration. The Yoon-Nelson model generally matched well with the experimental breakthrough curved for breakthrough fraction less than 50%. However, the proportionality constant in the Yoon-Nelson model needed modification through the method from which the mass transfer coefficient (kv) in the Wheeler-Jonas equation is determined. Subsequently, a series of breakthrough curves for the hypothetical toluene concentrations and face velocities simulating realistic operating conditions was generated, and their validity was verified against the adsorption capacity predicted by the Dubinin -Radushkevich isotherm equation. The useful life of a chemical filter could henceforth be estimated with confidence using the breakthrough curves predicted by the modified Yoon-Nelson model.
机译：从击穿曲线计算出的动态吸附容量随着表面速度的增加而逐渐降低，这表明对于化学过滤器型吸附器结构，颗粒内扩散的影响以及可能的吸附速率作为速率限制机制变得越来越深刻。 。 Yoon-Nelson模型通常与实验突破曲线完全匹配，其突破分数小于50％。但是，Yoon-Nelson模型中的比例常数需要通过确定Wheeler-Jonas方程中的传质系数（kv）的方法进行修改。随后，针对模拟的实际操作条件，针对假设的甲苯浓度和表面速度生成了一系列突破曲线，并针对Dubinin -Radushkevich等温方程预测的吸附容量验证了其有效性。此后，可以使用修改后的Yoon-Nelson模型所预测的突破曲线，有把握地估计化学过滤器的使用寿命。

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  • 来源
    《Building and Environment》 |2011年第2期|p.468-477|共10页
  • 作者

    Angus Shiue; Walter Den; Yu-Hao Kang; Shih-Cheng Hu; Gwo-tsuen Jou; C.H. Lin; Vincent Hu; S.I. Lin;

  • 作者单位

    Graduate Institute of Mechanical and Electrical Engineering, National Taipei University of Technology, Taiwan, Republic of China;

    Department of Environmental Science and Engineering, Tunghai University, Taichung 407, Taiwan, Republic of China;

    Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan, Republic of China;

    Department of Energy and Refrigerating Air-conditioning Engineering, National Taipei University of Technology, 1, Sec. 3, Chung Hsiao E Road, Taipei, 10808 Taiwan,Republic of China;

    Department of Testing and Certification, Taiwan Textile Research Institute, Taiwan, Republic of China;

    Department of Testing and Certification, Taiwan Textile Research Institute, Taiwan, Republic of China;

    Department of Testing and Certification, Taiwan Textile Research Institute, Taiwan, Republic of China;

    Department of Testing and Certification, Taiwan Textile Research Institute, Taiwan, Republic of China;

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  • 正文语种 eng
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  • 关键词

    chemical filter; breakthrough curve; activated carbons; yoon-nelson model; adsorption isotherm;

    机译：化学过滤器突破曲线活性炭;尹·纳尔森模型吸附等温线;

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