Although it is a continuos process, u still need a storage tank for some safety, controlability and operation purposes. For instance, if u need to do some modification partially to your plant, u can still manage to do that.
Fuel Cell is the best option. However, u must think of the development cost for fuel cell. In fact, u could distribute it to the chem. labs which consumes H2 but it still depends on the quantity and the purity of H2 that u've produced anywhere.
Do u all have any detail information on this type of separation ?? Pls share with me where could i get the more info. on this. This is simply bcos i am doing my plant design in separating these 2 components. Thank you in advanced.