Well you might be on to something. An air compressor with a venturi device, which is a simple device. I have a few for gold dredging and another one a fertiliz

Well you might be on to something. An air compressor with a venturi device, which is a simple device. I have a few for gold dredging and another one a fertilizer mixer. One could be made fairly easy with a pipe bender, welder, and fittings could be made on a lathe. However, a 50 HP air compressor is huge. I don't know much about air compressors besides my pancake compressor (barely runs my CUT50 plasma cutter), but 50 HP is tremendous. A lathe I am looking at to buy runs on 30 amps 220, and its only 5hp. 50 HP would be 50 *750 37,500 or 37kw.. or 170 amps at 220v if my math is correct! However, one of my tractor has 19 HP PTO at 540 rpm (Ford 2N) and another tractor of mine (Ford 4000) has a 50 HP PTO that could power a air compressor that size. So yeah that could be powered by one of my tractors and fit on a 3 point hitch. I like your idea and will look for a large air compressor motor somewhere to see if I can retro fit it to a PTO and build a venturi to try your idea out.