对经Na2CO3溶液调质石灰石煅烧产物CaO的物理结构及硫化特性进行了研究,发现同等条件下调质后石灰石煅烧产物CaO(M-CaO)比未经调质的CaO(N-CaO)具有更高的钙转化率.利用XRD技术对CaO晶体结构进行了测定,通过比较二者的晶胞参数和晶格畸变度等并结合其孔特性,证实M-CaO之所以比N-CaO具有更高的钙转化率,是由于M-CaO比N-CaO具有更高的晶体缺陷浓度,使得在硫化反应过程中通过产物层的扩散具有更高的离子扩散率.
参考文献
| [1] | PAOLO Davini et al.An Investigation of the Influence of Sodium Chloride on the Desulphurization Properties of Limestone[J].Fuel,1992,71:831-834. |
| [2] | Mark R Stouffer et al.An Investigation of CaO Sulfation Mechanisms in Boiler Sorbent Injection[J].AICHE Journal,1989,35(08):1253-1262. |
| [3] | David A et al.Structural Changes in Surfactant Modified Sorbents During Furnace Injection[J].AICHE Journal,1989,35(03):500-506. |
| [4] | Juan Adanez et al.Study of Modified Calcium Hydrox ides for Enhancing SO2 Removal During Sorbent Injection in Pulverized Coal Boilers[J].Fuel,1997,76(03):257-265. |
| [5] | C Hsia;G R St Pierre .Diffusion Through CaSO4 Formed During the Reaction of CaO with SO2 and O2[J].AICHE Journal,1993,39(04):698-700. |
| [6] | C. Hsia;G. R. St. Pierre;L. -S. Fan .Isotope Study on Diffusion in CaSO_4 Formed During Sorbent-Flue-Gas Reaction[J].AIChE Journal,1995(10):2337-2340. |
| [7] | Suhas K Mahuli;Rajeev Agnihotri .Combined Calcinations, Sintering and Sulfation Model for CaCO3-SO2 Reaction[J].AICHE Journal,1999,45(02):367-382. |
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