Hi,
In previous calculations I got the 3A molecular sieve compared with 4A requires about 0.4% of mass desiccant, 13.2% of regeneration gas flow, 2.7% of energy in the furnace and 3.1 % more cooling air cooler.
The calculations will be provided in excel sheet based on experimental experience obtained by desiccant vendors and others (Oilfield Processing of Petroleum, Volumen One: Natural gas, Pages: 183 - 185). These calculations reproduce the technical bids received from some vendors.
Best Regards