Natural ferruginous manganese ore for efficient immobilization of elemental mercury from coal combustion flue gas
نویسندگان
چکیده
منابع مشابه
Development of silica/vanadia/titania catalysts for removal of elemental mercury from coal-combustion flue gas.
SiO2/V2O5/TiO2 catalysts were synthesized for removing elemental mercury (Hg0) from simulated coal-combustion flue gas. Experiments were carried out in fixed-bed reactors using both pellet and powder catalysts. In contrast to the SiO2-TiO2 composites developed in previous studies, the V2O5 based catalysts do not need ultraviolet light activation and have higher Hg0 oxidation efficiencies. For H...
متن کاملRemoval of elemental mercury from simulated coal-combustion flue gas using a SiO2–TiO2 nanocomposite
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متن کاملEnhanced elemental mercury removal from coal-fired flue gas by sulfur-chlorine compounds.
Oxidation of Hg(0) with any oxidant or converting itto a particle-bound form can facilitate its removal. Two sulfur-chlorine compounds, sulfur dichloride (SCl2) and sulfur monochloride (S2Cl2), were investigated as oxidants for Hg(0) by gas-phase reaction and by surface-involved reactions in the presence of flyash or activated carbon. The gas-phase reaction between Hg(0) and SCl2 is shown to be...
متن کاملMercury from Coal Combustion
A 1997 study in Minnesota indicated a relationship between mercury deposition trends and regional coal combustion (as well as other possible sources) spanning a period of two centuries (Engstrom and Swain 1997). Sediment core sampling from rural lakes in eastern Minnesota indicated a growth in mercury deposited from the air since the first half of the 1800s, with the amount peaking in the 1960s...
متن کاملDevelopment of a mercury transformation model in coal combustion flue gas.
A bench-scale entrained-flow reactor was used to extract flue gas produced by burning a subbituminous Belle Ayr coal in a 580-MJ/h combustion system. The reactor was operated at 400 degrees, 275 degrees, and 150 degrees C with a flow rate corresponding to residence times of 0-7 s. Transformations of elemental mercury (Hg0) and total gas mercury (Hg(gas)) in the reactor were evaluated as functio...
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ژورنال
عنوان ژورنال: Fuel
سال: 2021
ISSN: 0016-2361
DOI: 10.1016/j.fuel.2020.118946