Aqua-Catalysed Chalked Lime Scrubbing Processes and Systems

摘要

A dry scrubbing system and process wherein an acid gas comprising at least one pollutant is modified in a humid zone of a duct such that a relative humidity of between 2% and 90% is achieved. The humidified gas is then contacted with chalked lime in a reaction zone. The reaction zone components are subsequently filtered in a filtering zone to provide a filtered gas having reduced concentration of the at least one pollutant when compared to the initial acid gas.

主权项

1. A dry scrubbing system for reducing the concentration of a pollutant from an acid gas, said dry scrubbing system comprising:
a first duct for carrying the acid gas, wherein the first duct defines a first opening allowing entry of the acid gas in the dry scrubbing system and a second opening for carrying a treated gas; at least one sorbent injector operatively connected to the first duct for adding chalked lime inside the first duct; means for adjusting the relative humidity of the acid gas operatively connected to the first duct, wherein the means for adjusting the relative humidity of the acid gas is at a location between the first opening and the at least one sorbent injector; and at least one filter for separating solid particles from the treated gas, wherein the filter is connected to the second opening of the first duct and wherein the filter is connected to a third opening of a third duct allowing exit of the treated gas from the dry scrubbing system.