CATALYTIC SULFUR DIOXIDE MEDIATION

摘要

Processes, apparatus, compositions and systems are provided that have a positive effect on air quality at a very reasonable cost. They can be employed as a retrofit solution to existing plants and can be used in design of new plants. In one aspect a process comprises: identifying locations within a combustor for feeding a sorbent and a sufur-active catalyst; determining the physical form and injection parameters for the sorbent and the catalyst; and injecting both the sorbent and the catalyst under conditions effective to dissocitate S02 and capture sulfur on the sorbent. Typically, the sorbent is introduced as a slurry upstream of the catalyst; the slurry dehydrates and shatters into fine particles which disperse over the cross section of the furnace section, duct or other apparatus where the catalyst dissociates the S02.