Lime – Spray Drying
–Lime Slurry is sprayed into the chamber
–The sulfur dioxide is absorbed by the slurry
–The liquid-to-gas ratio is maintained such that the spray dries before it reaches the bottom of the chamber
– The dry solids are carried out with the gas, and are collected in fabric filtration unit
– This system needs lower maintenance, lower capital costs, and lower energy usage
Wellman – Lord Process
Schematic process flow diagram – SO2 scrubbing and recovery system
