I'm designing an equipment for separating hydrogen from a hydrocarbon stream in the process of gasoline production from light naphtha(both chemical and mechanical design). If two phase separators and flash drums are considered, is it the same operating mechanism in both or not? I referred

https://wenku.baidu.com/view/97412f19a76e58fafab003c5.html

and the problem is what is the base in that procedure? It would be great if you could recommend me references.