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Sorbents for the oxidation and removal of mercury

Patent ·
OSTI ID:985401
 [1];  [2];  [3]
  1. Grand Forks, ND
  2. Thompson, ND
  3. East Grand Forks, MN
+ Show Author Affiliations
A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.
Research Organization:
University of North Dakota
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-98FT40320
Assignee:
Energy & Environmental Research Center Foundation (Grand Forks, ND)
Patent Number(s):
7,435,286
Application Number:
11/209,163
OSTI ID:
985401
Country of Publication:
United States
Language:
English

References (4)

Mercury capture by an activated carbon in a fixed-bed bench-scale system journal October 1998
Sorption of mercury species by activated carbons and calcium-based sorbents: effect of temperature, mercury concentration and acid gases journal December 1998
Adsorption of Mercuric Chloride Vapours from Incinerator Flue Gases on Calcium Hydroxide Particles journal September 1993
The reduction of gas phase air toxics from combustion and incineration sources using the MET–Mitsui–BF activated coke process journal June 2000

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Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY