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J Hazard Mater. 2010 Jul 15;179(1-3):400-8. doi: 10.1016/j.jhazmat.2010.03.018. Epub 2010 Mar 11.

Effect of particle size in a limestone-hydrochloric acid reaction system.

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Department of Power Machinery and Engineering, Shanghai Jiaotong University, Shanghai 200240, China.


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.

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