Submerged blast reaction tank

Claim 1

IN A REACTION TANK FOR CONTAINING A LIQUOR, A BOTTOM COMPRISING TWO SETS OF STEPS, EACH STEP HAVING A FACE AND A SUBSTANTIALLY HORIZONTAL TREAD, SAID SETS OF STEPS BEING DISPOSED TO FACE ONE ANOTHER AND EXTENDING TO THE TANK PERIMETER, A PLURALITY OF SUBSTANTIALLY HORIZONTAL NOZZLES ASSOCIATED WITH THE FACE OF EACH STEP AND CONSTRUCTED AND ARRANGED FOR DIRECTING A GASEOUS SUBSTANCE IN A SWEEPING ACTION ACROSS SUBSTANTIALLY THE ENTIRE AREA OF THE TREAD OF SUCH STEP AND TOWARD THE OPPOSITE SET OF STEPS, SAID NOZZLES BEING SUBSTANTIALLY UNIFORMLY POSITIONED ALONG THE LENGTH OF SUCH FACE, MEANS FOR SUPPLYING SUCH GASEOUS SUBSTANCE UNDER PRESSURE TO SUCH NOZZLES, THE LATTER BEING DIRECTLY CONNECTED TO SUCH SUPPLY MEANS, THE REGIONS SURROUNDING SAID NOZZLES WITHIN SAID TANK BEING FREE OF PARTITIONS AND OBSTRUCTIONS THEREBY TO PERMIT SOLIDS TO FALL FREE OF INTERRUPTION ONTO SUCH STEPS, THE AGGREGATE OF THE HORIZONTAL INTERNAL DIMENSIONS OF THE ORIFICES OF SAID NOZZLES POSITIONED IN EACH TREAD BEING NOT LESS THAN ABOUT 50% OF THE TOTAL LENGTH OF THE STEP FACE.