Dissolving gas in liquid

Claim 1

FOR CONTINUOUSLY DISSOLVING GAS IN A LIQUID, APPARATUS COMPRISING A TANK HAVING A SUBSTANTIALLY VERTICAL AXIS, THE TANK HAVING AN INLET AT THE TOP, MEANS FOR INTRODUCING LIQUID THROUGH THE INLET AT A HIGH VELOCITY AND A RESTRICTED OUTLET AT THE BOTTOM SO THAT LIQUID MAY BE FED CONTINUOUSLY THROUGH THE TANK AT A RATE TO MAINTAIN A BODY OF LIQUID AT A PREDETERMINED LEVEL IN THE TANK AND A SPACE ABOVE THE BODY, MEANS FOR INTRODUCING A GAS ABOVE THE BODY AND A CONCIAL BAFFLE DISPOSED BETWEEN SAID INLET AND SAID BODY SUBSTANTIALLY COAXIALLY WITH THE INLET AND SPACED FROM THE INLET A DISTANCE AT LEAST AS GREAT AS ONE-HALF THE DIAMETER OF THE INLET, THE APEX OF THE BAFFLE BEING DIRECTED TOWARD SAID INLET AND THE BASE OF THE BAFFLE BEING DISPOSED JUST ABOVE SAID LEVEL WITH THE LINE OF PROJECTION OF THE BAFFLE SURFACE MEETING THE LEVEL OF THE LIQUID BEYOND THE AREA OF THE LOWER END OF THE BAFFLE AND INWARDLY OF THE WALLS OF THE TANK SO THAT THE INCOMING LIQUID STRIKES THE BAFFLE AND THEN THE SURFACE OF SAID BODY OBLIQUELY ALONG A CIRCLE AROUND SAID BASE, WHEREBY A TORED OF SWIRLS APPROXIMATELY CONCENTRIC WITH SAID CREATED BY INTRODUCING LIQUID THROUGH SAID INLET AT HIGH VELOCITY.