Method for removing sulfur oxides from a hot gas

Claim 1

An improved method for removing sulfur oxides from a hot gas comprising the steps of: conveying the hot gas above 190° F. to a first compartment of a spray drying reactor chamber wherein settleable particulate matter is removed; directing the gas in the first compartment to a register assembly having at least one port communicating with a second compartment and a y-jet dual media nozzle horizontally disposed and discharging through the port; passing the gas in a swirling motion about said nozzle and through said port and into the second compartment; supplying an alkali slurry containing from 0.6 to 1.6 pound moles of alkali per pound moles of sulfur oxide in the gas and an atomizing fluid to the nozzle for mixing therein to atomize the slurry; discharging the atomized slurry into the second compartment for contact with said gas while maintaining the gas at a predetermined temperature to form a dry mixture of sulfite and sulfate compounds and removing at least a portion thereof from said second compartment; and conveying and discharging the gas from said second compartment to a dry particle collection zone for removing substantially all of the remaining entrained dry mixture.