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Modeling the Hydrodynamics and Mass-Transfer Phenomena for Sedimentary Rocks Used for Flue Gas Desulfurization. The Effect of Temperature

Modeling the Hydrodynamics and Mass-Transfer Phenomena for Sedimentary Rocks Used for Flue Gas Desulfurization. The Effect of Temperature,10.1016/S157

Modeling the Hydrodynamics and Mass-Transfer Phenomena for Sedimentary Rocks Used for Flue Gas Desulfurization. The Effect of Temperature  
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Sedimentary rocks, such as limestone, are widely utilized in Flue Gas Desulfurization (FGD) processes. The study of the dissolution for solid particles involved in FGD is therefore significant for process design and plant operation. The rate of dissolution affects the cost of makeup and waste disposal. For this reason a method to test different qualities of raw materials can give us a better understanding of the desulfurization performance. One method to test the reactivity takes into account the utilization of diluted strong acids like hydrochloric acid [1]. In the present study the mass transport phenomena involved in batch stirred tank reactors (BSTRs) are modeled in presence of hydrochloric acid and the experiments were taken at different temperatures in order to demonstrate the reliability of the method. The Surface Renewal Time, also called Surface Time of Exposure (TOE), is a quantity describing the life-time of the separation surface between the solid and liquid faces. The method gives an estimation of the temperature effect over the solid particles dissolution in BSTR and can be used to evaluate the reactivity and the diffusivity values of different raw materials.
Published in 2009.
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