Effects of bed aging on temperature signals from fixed-bed adsorbers during industrial operation

Results in Engineering

Srdjan Sasic¹  Henrik Thunman²  Dario Maggiolo³  Henrik Ström³  Adam Jareteg³  Anton Larsson⁴ 

[1] Environment, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden;;Division of Energy Technology, Department of Space, Earth &Division of Fluid Dynamics, Department of Mechanics and Maritime Sciences, Chalmers University of Technology, SE-412 96, Gothenburg, Sweden;Göteborg Energi AB, SE-416 64, Gothenburg, Sweden;

关键词: Adsorption;    Gas cleaning;    Industrial-scale;    Benzene;    Activated carbon;   

DOI  :  

来源: DOAJ

【 摘 要 】

The capacity of adsorber beds used in industrial-scale temperature-swing adsorption diminishes over time due to bed aging. Here, we present industrial data on the temperature signals from fixed-bed adsorbers using activated carbon designed to remove benzene and other impurities from the gas produced in biomass gasification. The aging of the adsorber beds proceeds due to irreversible adsorption of trace species and manifests itself via two simultaneous effects: a decrease in the availability of active adsorption sites over time and an increase in the overall thermal mass of the bed. Both effects tend to dampen the temperature response of the beds during operation, implying that they are easily confounded. Model descriptions of bed aging should account for both effects.

【 授权许可】

Unknown