Research on CuO/Al2O3 adsorbent for flue gas desulfurization

flue gas desulfurization;  CuO/Al2O3 desulfurization adsorbent;  Preparation method

The flue gas dry desulfurization of coal-fired power plants with CuO/Al2O3 desulfurization adsorbent is an advanced desulfurization technology. The dispersion state of the desulfurizer CuO in the carrier, the influence of roasting temperature on the structure of Al2O3 adsorbent carrier, the problems to be considered in the preparation of desulfurizer, the temperature of the desulfurization reaction and other factors on the desulfurization effect of the adsorbent were investigated. Experiments show that CuO is monolayer dispersed on Al2O3 carrier. If the roasting temperature is too high, the sintering and desulfurization activities of the carrier will decrease, and the desulfurization adsorbent must be regenerated with reducing gas; Cu(NO3)2 solution should be used as impregnation solution, and desulfurizer should be prepared by equal volume impregnation method; It is most suitable to carry out the desulfurization reaction between 400~430 °C. Under reasonable conditions, a good desulfurization effect is obtained.