What if I can't find a destination at below 50 - 60 psig?
Fox can stage steam ejectors -
Why can't a two-stage ejector help us recompress natural gas?

If no destination for recovered gas can be located at below 50 psig (3 - 4 barg), then it is unlikely that vapor recompression venturi ejectors will be suitable in your application.

Many process designers look at using two-stage ejector systems to try and overcome this problem, which will not have a successful results. For a more detailed explanation, please feel free to contact us. Fox can be engaged, on a consulting basis, to perform the quantitative analysis of your specific application, that will indicate the unsuitability of such approach.