一种热流逸式气体分离系统设计

混合气体在热流逸效应作用下,各组元会出现一定流动差异.基于这一现象,以分离焦炉煤气制取氢气为例,设计了一种热流逸式气体分离系统,该系统由低品位余(废)热驱动,无运动部件.计算表明,新型热流逸式气体分离方法的分离纯度可达99%以上,当焦炉煤气流量为30000 m3?h-1时,气体分离系统单位产品能耗约为36.9 kW·h?m-3(H2).

Design of a Gas Separation System Based on Thermal Transpiration Effect

Thermal transpiration effect for gas mixture can lead to some flow differences between components. Based on the differences, a thermal transpiration gas separation system has been designed to separate the hydrogen from the coke oven gas. The system can be driven by low grade residual heat and has no moving parts. The results show that the separation purity of the novel thermal transpiration gas separation method is more than 99%. When the flow rate of coke oven gas is 30 000 m3?h-1, the unit product energy consumption of the gas separation system is about 36.9 kW·h?m-3(H2).