Mercury removal system and method

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture

Reexamination Certificate

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Details

C422S168000, C096S155000, C096S181000, C095S134000

Reexamination Certificate

active

07871586

ABSTRACT:
The present invention provides a mercury removal system and method for effectively removing a mercury component, which is present in a gas stream in an extremely small amount in wet gas cleaning. The mercury removal system in wet gas cleaning includes a water washing tower for introducing therein a target gas containing a mercury component and transferring the mercury component into an absorbing solution, a flash drum (10) for flashing the absorbing solution discharged from the water washing tower to separate the absorbing solution into a gas component and waste water, an oxidation treatment means (1) for adding an oxidizing agent to the absorbing solution at the preceding stage of the flash drum, and a waste water treatment means for subjecting to coagulation sedimentation treatment the separated waste water containing the mercury component at the following stage of the flash drum to dispose of the mercury component as sludge.

REFERENCES:
patent: 4142875 (1979-03-01), Bohmholdt et al.
patent: 2003/0082085 (2003-05-01), Harada et al.
patent: 51-131164 (1976-11-01), None
patent: 52-111906 (1977-09-01), None
patent: 58-196888 (1983-11-01), None
patent: 10-287885 (1998-10-01), None
patent: 2003-138277 (2003-05-01), None

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