Process for sulfur dioxide, hydrochloric acid and mercury mediation

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United States of America Patent

PATENT NO 9802154
SERIAL NO

14578828

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Abstract

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Dry processes, apparatus, compositions and systems are provided for reducing emissions of sulfur oxides, and sulfur dioxide in particular, and/or HCl and/or Hg in a process employing a combination of a lime-based sorbent, in particular hydrated lime and/or dolomitic hydrated lime, and a sorbent doping agent administered to achieve coverage of a three-dimensional cross section of a passage carrying SOx and/or HCl and/or Hg-containing gases with a short but effective residence time at a temperature effective to provide significant sulfur dioxide and/or HCl and/or Hg reductions with high rates of reaction and sorbent utilization. The once-through, dry process can advantageously introduce the sorbent and sorbent doping agent dry or preferably as a slurry to enable uniform treatment. Preferred sorbent doping agents include water-soluble or water-dispersible copper and/or iron compositions which can be heated to an active form in situ by the flue gases being treated.

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Patent Owner(s)

Patent OwnerAddress
FUEL TECH INC27601 BELLA VISTA PARKWAY WARRENVILLE IL 60585

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gavaskar, Vasudeo S Naperville, US 9 46
Rivera, Emelito P Inverness, US 11 15
Saratovsky, Ian Highland Park, US 22 23
Schulz, Kent W Geneva, US 14 18
Smyrniotis, Christopher R St. Charles, US 19 87

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