Recycle gas dehydration

Claim 1

IN A HYDROCARBON CONVERSION PROCESS WHEREIN A HYDROCARBON REACTANT UNDERGOES AT LEAST ONE OF THE MOLECULAR CHANGES, HYDROGENATION, DEHYDROGENATION, DEHYDROAROMATIZATION AND ISOMERIZATION IN A REACTION ZONE IN THE PRESENCE OF A FLOWING SUBSTANTIALLY COMPACT COLUMN OF PARTICLE FORM SOLID CONTACT MASS MATERIAL CATALYZING SAID MOLECULAR CHANGE IN THE PRESENCE OF A RECYCLE GAS AND AT AN ELEVATED TEMPERATURE OF AT LEAST 500* F. WHEREIN THE YIELD OF DESIRED HYDROCARBON REACTION PRODUCT IS ADVERSELY AFFECTED BY THE PRESENCE OF MORE THAN ABOUT 12.6 GRAMS OF WATER PER 1000 CUBIC FEET OF RECYCLE GAS, WHEREIN SAID SOLID CONTACT MASS MATERIAL IS AT LEAST PARTIALLY DEACTIVATED BY THE DEPOSITION OF A CARBONACEOUS DEPOSIT ON SAID MATERIAL, WHEREIN SAID DEACTIVATED CONTACT MATERIAL IS WITHDRAWN HOT FROM SAID REACTION ZONE AND WHEREIN SAID HOT WITHDRAWN CONTACT MASS MATERIAL IS REGENERATED BY COMBUSTION, THE IMPROVEMENT WHICH COMPRISES CONTACTING SAID HOT WITHDRAWN DEACTIVATED CONTACT MASS MATERIAL WITH RECYCLE GAS CONTAINING MORE THAN 12.6 GRAMS OF WATER PER 1000 CUBIC FEET THEREOF IN A DRYING ZONE AND REGULATING THE FLOW OF HOT WITHDRAWN CONTACT MASS MATERIAL AND SAID RECYCLE GAS HAVING MORE THAN 12.6 GRAMS OF WATER PER 1000 CUBIC FEET THEREOF THROUGH SAID DRYING ZONE TO PRODUCE A RECYCLE GAS HAVING NOT MORE THAN 12.6 GRAMS OF WATER PER 100 CUBIC FEET.