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在本质上来讲,在某个特定的吸收过程中,气体边和液体边的传质系数比决定了吸收过程中是被气体一边传质控制,或者是被液体一边传质控制。因为酸钠溶液(Na2Co3)吸收二氧化碳(CO2)是一带具备液相化学反应的吸收过程,因此,其吸收过程中是被液体一边传质控制。酸钠溶液(Na2Co3)吸收二氧化碳(CO2)的过程是一带具备液相化学反应的相际间对流传质的过程,因而,液相本体中的化学反应速率以及二氧化碳(CO2)沿扩散途径的扩散速率决定了酸钠溶液(Na2Co3)吸收二氧化碳(CO2)的吸收速度。本文以表面更新理论模型为依据,对酸钠溶液对CO2的吸收动力学进行了分析和研究。
In essence, in a particular absorption process, the mass transfer coefficient ratio between the gas side and the liquid side determines whether the absorption process is controlled by the mass transfer of the gas or by the mass transfer of the liquid. Because sodium carbonate solution (Na2Co3) absorbs carbon dioxide (CO2) is a chemical reaction with the liquid absorption process, therefore, the absorption process is liquid mass transfer control. The process of sodium carbonate (Na2CO3) absorbing carbon dioxide (CO2) is the process of convective mass transfer in the vicinity of the liquid phase. Therefore, the rate of chemical reaction in liquid bulk and the diffusion of carbon dioxide (CO2) along the diffusion path The rate determines the rate of absorption of carbon dioxide (CO2) by the sodium bicarbonate solution (Na2Co3). Based on the theory of surface renewal, the absorption kinetics of sodium bicarbonate solution to CO2 was analyzed and studied.