高温煤气铁钙基脱硫剂再生研究

The influence of regeneration temperatures in range of 400 ℃～700 ℃ and the regeneration atmosphere composed of O2 and N2 in varying proportions on regeneration conversion and the following sulfidation reactivity were investigated in a fixed bed reactor at atmospheric pressure. In addition, the influence of deposited dust adhered to the surface of sorbents on regeneration were studied, which can be encountered in the combined process of simultaneous removal of dust and sulfur. The characterization of regenerated samples was undertaken by XRD and BET techniques. The results showed that increasing temperature had a negative effect on first-cycle regeneration conversion, but little effect on regeneration conversion and sulfidation reactivity in the following cycle. Meanwhile regeneration atmosphere studied has very little effect on the regeneration conversion and the following sulfidation reactivity. Furthermore, the addition of dust into the sorbent would decrease the regeneration conversion, but had no noticeable influence on the following sulfidation reactivity.