Looking for a vacuum pump/blower to transfer flammable gas
I am looking for a vacuum pump/blower to transfer biogas from the storage bladders to our mini flare. We have a research-scale anaerobic digester (3000 gallons) for aquaculture waste solids at my organization, and can produce up to 350 cf/day of biogas (currently around 35 cf/day due to low solids concentration). We have a small ATEX/C1D2 vacuum pump that can only transfer around 0.5 cfm, but we need something that can handle 15 - 20 cfm, so we can flare large volumes relatively quickly (we may buy another flare if necessary). I have often seen regenerative gas blowers being used on farm-scale digesters to move the biogas to the generator/flare (not sure if they use ATEX/C1D2 rated equipment), but I cannot seem to find something suitably sized for our scale at a reasonable price (under $3000). An ATEX/C1D2 liquid ring vacuum pump could be another option, based on my limited experience (research background, limited industrial experience). There might be other options too, but I am not sure. Do you have any suggestions or vendors I could reach out to for my application needs (preferably US-based)?