提纯回用氢网络的夹点变化规律

Change rules of pinch point for hydrogen distribution systems with purification reuse

在氢系统中引入提纯装置可以经济有效地提高氢气的回用率,是氢系统中广泛采用的方法。但引入提纯回用过程可能会影响氢系统的夹点位置,还可能使氢系统出现多夹点。由于夹点对系统性能的分析与优化具有极其重要的作用,而夹点位置的变化则会影响到用氢过程的匹配。在氢夹点技术的基础上,通过图示分析法,研究了在不同提纯产品浓度下提纯回用过程的夹点变化规律和趋势,对于考虑提纯回用的氢网络集成具有重要的意义。

Introducing purification devices in hydrogen systems can improve the hydrogen reuse effectively and economically, which is widely used in hydrogen systems. When a purification process is introduced, the position of the hydrogen pinch point may change and also multiple pinch points of the system may occur. For the pinch point has a considerable role for analyzing the performance of a system and optimizing it, the change of pinch point will influence the hydrogen distribution system. The pinch point change rules and tendencies for hydrogen systems with purification reuse processes are analyzed in different purification product concentration cases, based on the pinch technology through graphical methods. The work has great signification for hydrogen systems integration with purification reuse processes.