Abstract

The invention relates to a composition for smoke treatment comprising: hydrated lime having a BET specific surface area no lower than 25 m2/g and a BJH total porous volume no lower than 0.1 cm3/g; at least one additive selected from the group made up of NaCl, Na2SO4, CaCl2 and the mixtures thereof, the additive/hydrated lime ratio by weight being higher than 1:100; and less than 5 % water by weight.

IPC Classes  ?

• B01J 20/04 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
• B01J 20/28 - Solid sorbent compositions or filter aid compositionsSorbents for chromatographyProcesses for preparing, regenerating or reactivating thereof characterised by their form or physical properties
• B01D 53/50 - Sulfur oxides
• B01D 53/68 - Halogens or halogen compounds
• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption

Abstract

The invention relates to a binder composition comprising an intimate mixture of: hydrated lime powder having a weight-average particle size of less than 100 μm, and plaster (calcium sulphate hemihydrate) powder having a weight-average particle size of less than 100 μm, the weight ratio of hydrated lime having a particle size of less than 100 μm/plaster powder having a particle size of less than100 μm being between 1:0.90 and 1:0.1.

IPC Classes  ?

• C04B 11/28 - Mixtures thereof with other inorganic cementitious materials
• C04B 28/14 - Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements