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Reaction kinetics model of river sand particles with retarded mud acid
Author(s): 
Pages: 68-71,115
Year: Issue:  4
Journal: Journal of Xi'an Petroleum Institute(Natural Scien

Keyword:  acidificationretarded mud acidacid—rock reactionreaction kinetics model;
Abstract: The acid—rock reaction process of river sand particles with retarded mud acid(HF/NH4Cl mixtures)of higher concentration and its effecting factors are investigated through experiments.The experimental results show that,at definite temperature,the loss quantity of the river sand of 4 different grain-diameters increases and the reaction rate decreases with the increase of the reaction time;the loss quantity and the reaction rate all increase with the reduction of the grain-diameter of the sand;the loss quantity and the reaction rate all increase with the increase of the reaction temperature.The kinetic model of the acid—rock reaction is established based on unreacted shrinking core model,and it can describe the variation law of the loss quantity of the sand particles with time in the reaction process.
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