Study on the adsorption and purification performance of runner with different staged regeneration modes

Abstract

Abstract In this paper, the hierarchical regeneration mode of three-zone, four-zone and two-stage regeneration of the wheel is firstly determined. Silica gel is selected as the adsorbent, and toluene is selected as the VOC pollutant. Visual Basic software is used to establish the coupling adsorption model of heat, humidity and VOC pollutants in the staged-regeneration wheel. The dehumidification and VOC adsorption performance of the graded regenerated wheel with different influencing factors were compared, and the variation rules of the dehumidification and toluene adsorption concentration of the staged-regeneration wheel with different influencing factors were analyzed. The results show that, when the regeneration energy consumption of the runner is the same, the dehumidification capacity of the two-stage runner is the highest, the concentration of toluene adsorbed by the three-zone runner is the highest, and the dehumidification capacity and the concentration of pollutants adsorbed by the two-zone runner are the lowest. When the capacity of dehumidification is the same, the regeneration energy consumption of two-stage runner is the lowest, and the regeneration energy consumption of two-zone runner is the highest. With the increase of adsorption capacity, the lower the regeneration temperature is, the more significant the energy saving effect will be. When the capacity of dehumidification is the same, the concentration of pollutants adsorbed by the runner in the three regions is the highest. In addition, with the increase of air entrance temperature and humidity, the dehumidification capacity of the two-stage runner changes the most, and the adsorption concentration of toluene of the two-stage runner changes the most. When the concentration of toluene in the treatment zone was different, it had no effect on the dehumidification effect of the runner, and the concentration of toluene adsorbed by the runner in the third zone changed the most.