Process for countercurrent contacting of solids and gases

Claim 1

AN IMPROVED SOLID-VAPOR CONTACTING PROCESS, COMPRISING CONTINUOUSLY PASSING A GRANULAR, SOLID MATERIAL DOWNWARDLY, AND A VAPOROUS MATERIAL UPWARDLY THROUGH VAPOR-TREATING AND HEAT EXCHANGE ZONES OF CONTACT, PASSING SAID MATERIALS IN COUNTER-CURRENT RELATION THROUGH A VAPORTREATING ZONE WITHOUT APPRECIABLE VIBRATORY MOTION OF SAID SOLID MATERIAL THEREIN, PASSING SAID MATERIALS AS A RESTRICTED STREAM OF SUCH MATERIALS THROUGH AN INDIRECT HEAT EXCHANGE ZONE, AND INCREASING THE RELATIVE VELOCITY FLOW OF VAPOROUS MATERIALS UPWARDLY THROUGH THE HEAT EXCHANGE ZONE, INDUCING VIBRATORY MOTION OF THE SOLID MATERIALS THEREIN WHILE MAINTAINING DOWNWARD FLOW OF SAID SOLID MATERIAL THERETHROUGH.