Experimental characterization of the wet flue gas desulfurization process is carried out using a model limestone-hydrochloric acid reaction system, with in-situ measurement of the dissolution rate and particle size distribution. The limestone source, initial particle size distribution, working temperature and pH value are varied in large ranges. The dissolution rate is found to be higher when the average particle size is smaller, the temperature is higher, or the pH is lower. An empirical equation is established to correlate the dissolution rate with the particle size and working conditions, which agrees well with measurements. The results may be useful for providing insights to improve the efficiency of the wet flue gas desulfurization process, as well as other solid particle-liquid solution reactions. © 2010 Elsevier B.V.
Bibliographical noteBS and QZ are supported in part by the National Natural Science Foundation of China (50928601) and the National Basic Research Program of China (2005CB221206). BS is also supported by the State 973 Program of China (2007CB210102), China Scholarship Council, and the Shanghai Science and Technology Commission, Shanghai China (No. 08DZ1204202). XC is supported by the National Science Foundation (CMMI-0643726), the National Natural Science Foundation of China (50928601), and the National Research Foundation of Korea (R32-2008-000-20042-0).
- Limestone dissolution