Low Bed Of Soot And Lime Powder Mixture Adsorption Flue Gas Desulfurization Experimental Study

The dry flue gas desulphunzation technique has bring extensive because its simple technique and manipulation-, low investment operation and maintance fee and easy disposal of the desulphunzation product. Now sulfur dioxide and acid rian pollution has become a commen and critical phenomenon in China, so it's no time to delay to control and treat SCh pollution. But because of its high investment operation fee et al, flue gas desulphunzation techniques is not suitable for the development country to take. In this article study a economical and effective dry flue gas desulphunzation techniques is described aimed at the SOa pollution of our country and the low concentration of SQz desulphurization in flue gas.This paper systematically studies the influence of the process conditions, such as SO2 concentration in flue gas, flue gas temperature and gas velocity of flow etc,on the efficiency of the sorbent ,the change of outlet concentration of SCh and the influence of the sorbent treated by Fe^O^ CuO and A12C>3. The result of experiments shows: the desulphurization efficiency decrease with flue gas temperature increasing, so low temperature is more suitable for desulphurization under the experimental condition we chosed; in the experimental, the desulphurization efficiency increase with velocity of flue gas decreasing and there is a extremum between SOj concentration in flue gas and the desulphurization efficiency. This method is more effective for the treatment of SOa concentration of 2300mg/m3 in flue gas. The ratio of soot and calcareousness powder also influent the desulphurization efficiency. It can be seen the best ratio is 3:1; The desulphurization efficiency can be notably increased and maintain at high level when metal oxide is added into sorbent The disperse degree of metal oxide can influent the increase of the desulphurization efficiency and it can be seen that the method of disperse by means of decompound of the middle product be heated is better than that of by mixing by hand.By studying adsorption isotherms of adsorbent of the SO2 absorption, we could describe the desulphurization mechanism of adsorption by Freundlich equaption andiiAbstractinterpreted the absorption by surface selected adsorption. It can be seen directly that there is a layer of adsorption film on the soot surface in TEM. The FDP line of adsorbent show that HfeSCU desorption from the soot surface is the key step of the whole absorption reaction and is the important influence factor on desulphurization.