Membrane recovery grading
Thread Content
For the off-gases from the new 200,000 tons/year ammonia synthesis plant, a membrane recovery unit is used to recover hydrogen. Given that the synthesis pressure is 13.6 MPa, the recovery process is designed in two stages: high-pressure hydrogen (93%) at 6.6 MPa, and low-pressure hydrogen (89%) at 2.95 MPa. It is said that this reduces some of the compression work. Has it been used? What are the results? Let’s discuss.
What technology is used for this? I’ve never seen it; I’d like to learn about it!
Our membrane operates at pressures below 13 Mpa on the inlet side, and at the compressor inlet as well; thus the pressure is below 2.5 Mpa. The membrane resistance is below 10.8, and the H2 percentage is above 80%, which meets our process requirements. I don’t know the conditions of your membranes!! Last edited by yunanshu on 2008-2-14 14:10]
It would be better to post this thread in the membrane technology section; after all, there are many experts there
How to improve the purity of hydrogen recovered by membranes