Faced with the problem of high gas cleaning (H2S removal)costs, resulting in high power generation costs using gas engines, we evaluated some 26 different systems. Finally we narrowed down to 4 systems with the potential for low gas cleaning costs.
We have now tried out one system which removes H2S down to well below 100ppmv from the biogas generated from distillery spent wash at a cost of around 0.5UScent/m3 of gas cleaned....considering all costs (fixed, operating, financing, etc). But I am wondering if the ammonia, siloxanes etc will change this scenario if we try biogas from other sources.........can anyone advise the level of and impact of (biogas) ammonia and siloxanes, etc on equipment?........and to what level removal of these is required?
Thanks all.
atulbhalla46@hotmail.com