Abstract
The traditional methods of hydrogen network integration generally minimize hydrogen consumption and rarely discuss the characterization of hydrogen utilization efficiency (HUE). And some definition of HUE are also not accurate enough. Based on relative concentration property, this paper constructs a nonlinear mathematical model encompassing all necessary constraints to synthesize the multi-impurity hydrogen networks. Result shows that this model is superior to all ones with absolute concentration basis. Through observation and analysis of hydrogen to oil ratio (HTO), a practical and important operation parameter of refinery, we can know the actual hydrogen demand of one hydrogen network. So, in this paper we compare two different kinds of HUE. Conclusion is: Efficiency2, calculated by actual hydrogen demand, is more reasonable than Efficiency1, calculated by hydrogen discharge.
