How I can remove nitrogen from misture of Biogas ( Composition includes Nitrogen 14 % , Methane 44 % , CO2 34% , H2O 2.1% , H2S 2.1% , O2 2.5%)?
I want to produce Hydrogen from biogas using steam methane reforming Process. I want to pre-treatment of biogas remove impurities before reforming. I made Process flow diagram includes Equipment Adsorber(H2S REMOVE using iron sponges bed) , then Reformer( Only 1). Please help me. How?
I attached process flow diagram , my supervisior said add nitrogen unit. He reject it and said heat exchanger , adsorber , absorber, etc pressure temprature not correct. please help me. or provide me any article reference which help me. for the production of Hydrogen from Biogas using Steam methane Reforming Process. Please tell me.
Dear Muhammad Auon ,
If you have 14% nitrogen N2 and 2.5% oxygen O2 in the biogas, then there must be an intake of ambient air usually caused by vacuum combined with leaky gas dome(s) or gas piping incl. valves up to the suction nozzle of the biogas blower(s). We experienced this a few times since 1980 after we started our first full scale high-rate biogas plant.
You can't easily remove the N2 from the biogas - there is no cost effective way to do so. If you're initially purging with N2, don't - swap to CO2 or something else.