循环流化床富氧燃烧下钙基脱硫剂煅烧产物碳酸化特性实验研究

In this paper, the carbonation character of CaO calcinated from a kind of sorbent used in utility circulating fluidized bed boiler was researched in a thermo gravimetric analyzer and the reaction is in oxy-fuel condition. The influence of temperature and CO2 concentrations on the carbonation of CaO was investigated. It was found from experiment result that , temperature is very important to carbonation reaction. At the range of 400-700℃,higher temperature can accelerate the carbonation of CaO and increase the conversion ratio. It is easier to deposit on the high temperature heater zone. It is also found that ,CO2 concentration an accelerate the reaction ,but the conversion ratios is all the same.