Abstract

A physico-mathematical model of gas adsorption in a packed column (PC) has been built. Analysis of the results of some experimental studies has shown that in most practical cases of extraction of target components from the vapor-gas flow at the interface (on the surface of the adsorbent granules), Henry’s phase equivalence can be approximated with a linear law. Calculations have been performed for the experiment isotherm of nitrogen adsorption onto aluminosilicate in the region of its linear part at low concentrations of the adsorbate in the adsorbent; Henry’s constants for CO₂ at adsorption onto aluminosilicate have been found for three temperatures (30, 55, and 75°C) in accordance with the known experimental data. A parametric analysis has been performed with respect to the CO₂ adsorption process in a PC against the packed bed height, size of adsorbent granules, and rate of filtration of the vapor-gas flow through the packed bed. Estimations have been made for SO₂ adsorption onto aluminosilicate in a PC; some practical recommendations have been given for using the results presented in the article, as well as on the need to continue systematic comprehensive theoretical and experimental study of the adsorption process in a PC to establish the dependence of the phase equilibrium constants on the temperature and concentration of water vapor in gases for certain target gas component-adsorbent pairs.

中文翻译：

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TPS 烟气中 CO2 和 SO2 在填充塔中吸附的数学模型

摘要

建立了填充柱 (PC) 中气体吸附的物理数学模型。对一些实验研究结果的分析表明，在从界面处（吸附剂颗粒表面）的蒸气-气体流中提取目标组分的大多数实际情况下，亨利的相当量可以近似为线性定律。已经计算了在吸附剂中低浓度的吸附质时，氮吸附在硅铝酸盐线性部分区域的实验等温线； 根据已知的实验数据，已经在三个温度（30、55 和 75°C）下发现了在铝硅酸盐上吸附CO _{2的亨利常数。}已对 CO _{2进行了参数分析} PC 中的吸附过程与填充床的高度、吸附剂颗粒的大小以及通过填充床的蒸汽-气流的过滤速率有关。已对 PC 中的硅铝酸盐吸附SO _{2进行了估算；}已经给出了一些实用的建议来使用文章中提出的结果，以及需要继续对 PC 中的吸附过程进行系统全面的理论和实验研究，以确定相平衡常数对温度和浓度的依赖性对于某些目标气体组分-吸附剂对，气体中的水蒸气。