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提出板式气体吸收塔干板开车动态模拟法,编写了用于求解板式气体吸收塔干板开车常微分方程组的MATLAB程序,并举例说明。本数学模型作了理论板、等温操作、恒摩尔持液假定,忽略持气量和塔板上的流体流动动态行为;针对开车实际过程,塔板一面从上到下逐板充液,一面逐一扩展常微分方程数,并巧妙地赋以各板常微分方程的积分初值,使动态解亦得以随时更新,直至塔底最后一板充液完成并顺利得出稳态解。本模型对于化学工程师了解板式气体吸收塔开车过程中塔板上持液量、液相组成和气相组成动态变化的细节具有重要意义。
The dynamics simulation method of plate gas absorption tower dry plate driving was proposed and the MATLAB program for solving ordinary differential equations of plate gas absorption tower dry plate driving was prepared. The mathematical model of the theoretical plate, isothermal operation, constant Moore holding assumption, ignoring the holding capacity and fluid flow on the tray dynamic behavior; for driving the actual process, the plate from top to bottom plate by plate liquid side by side, one by one The number of ordinary differential equations, and subtly assigned to the initial value of the ordinary differential equations of the plates, the dynamic solution can be updated at any time, until the bottom of the bottom of the liquid plate filled with liquid and smooth steady solution. This model is of great importance for chemical engineers to understand the details of the liquid holding capacity, the composition of the liquid phase and the dynamics of the gas phase composition of the plate during the driving of the panel gas absorption tower.