Membrane gas absorption (MGA) based on ceramic membranes is considered to be an effective technology for removing SO_x from ship exhaust. To develop a convenient method for designing and amplifying a membrane contactor, the critical gas velocity was defined. Two simple connection modes, series and parallel modules, were assembled and compared with a single-tube membrane contactor. The critical gas velocity is associated with the size of the membrane element and module, based on which an empirical equation can be formulated to optimize the gas velocity in different membrane contactors. In addition, another amplifying method, using multiple tubes in one shell, was also studied with computational fluid dynamics (CFD) simulations. The results imply that the addition of baffles improves the desulfurization performance of the membrane contactor at the critical gas velocity. The methods and conclusions presented herein provide a design basis for using the contactor at an industrial scale.

基于陶瓷膜的膜气体吸收（MGA）被认为是去除SO _x的有效技术从船上排气。为了开发一种设计和放大膜接触器的简便方法，定义了临界气体速度。组装了两个简单的连接模式，即串联和并联模块，并与单管膜接触器进行了比较。临界气体速度与膜元件和膜组件的尺寸有关，可以根据经验公式制定经验方程，以优化不同膜接触器中的气体速度。此外，还通过计算流体动力学（CFD）模拟研究了在一个壳体中使用多个管的另一种放大方法。结果表明，在临界气体速度下，增加挡板可以改善膜接触器的脱硫性能。