Absorption of HCl by limestone in hot flue gases. Part III: simultaneous absorption with SO

The effects of calcium hydroxide on hydrogen chloride emission characteristics during a simulated densified refuse-derived fuel combustion process

“…The most of previous studies focused on the flue gas behavior and HCl emission characteristics during RDF combustion in a fluidized-bed incinerator [4][5][6][7][8]. However, little information has been developed about the HCl emission characteristics using RDF combustion in a fixed-bed incinerator.…”

Halide aerosols in circulating fluidised bed co-combustion. Role of coal bound kaolin

“…It has been reported in numerous publications, as referred to in Section 1, that HCl is liberated in the chemical reaction between kaolin and alkali metal halide vapour. The acidic HCl or HBr present in the flue gases may react with the high calcium ash [86][87][88][89]. The (Cl + Br)/(2Ca) molar ratio for the water soluble fraction of 0.28 and 0.12 for SRF-Bark + Kaolin and SRF-Bark + Coal, respectively, indicates that there is enough Ca to bind all the halogens.…”

HCl Removal Using Calcined Ca–Mg–Al Layered Double Hydroxide in the Presence of CO2 at Medium–High Temperature

“…Wet, dry, and semi-dry methods for the removal of HCl have been widely studied, with the dry method being superior to the other two, considering the operating temperature range and difficulties in sludge handling [13][14][15]. In addition, different types of sorbents, such as CaO-based [7,[16][17][18], MgO-based [19,20], and sodium sorbents [21][22][23], have been used to remove HCl; however, most cases showed generally poor performance for HCl removal, especially at high temperatures.…”