Patent ID: 8333074

Claim:
A mixing device comprising: a first inlet for a working fluid comprising a pipe having a first diameter; an outlet for light gas and working fluid comprising a pipe having a second diameter which is smaller than the first diameter; a mixing section interposed between the first inlet and the outlet, the first inlet, the outlet and the mixing section being connected to form a through passage from the first inlet to the outlet, the mixing section comprising: a cylindrical section of external diameter greater than the diameter of the pipe of the first diameter; a truncated conical section between the pipe of first diameter and the cylindrical section, and having an outer surface of diameter decreasing from the cylindrical section to the pipe of first diameter, and an inner surface of diameter which increases from the cylindrical section to the pipe of first diameter; a plurality of passages through the truncated conical section into the cylindrical section; and a multiplicity of small holes disposed between the passages and the through passage in the cylindrical section.