Method for the treating in exhaust gas and exhaust gas...

Details Method for the treating in exhaust gas and exhaust gas... Method for the treating in exhaust gas and exhaust gas...

2005-07-05

2005-07-05

Cooke, Colleen P. (Department: 1754)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

C423S215500, C423S239100, C423S243080

Reexamination Certificate

active

06913737

ABSTRACT:
The present invention provides a method for the treatment of mercury present in exhaust gas wherein, after a chlorinating agent is added to exhaust gas containing nitrogen oxides, sulfur oxides and mercury, the exhaust gas is subjected to a reductive denitration treatment in the presence of a solid catalyst and then to wet desulfurization using an alkaline absorbing fluid, the method being characterized by measuring the mercury concentration in the exhaust gas after the wet desulfurization; calculating a predicted value of the inlet mercury concentration before the reductive denitration treatment on the basis of the measured mercury concentration; and controlling the feed rate of the chlorinating agent added prior to the reductive denitration treatment, according to the deviation of the predicted value from a reference inlet mercury concentration, as well as a system for the treatment of exhaust gas. Thus, the present invention provides an exhaust gas treatment process permitting the removal of mercury, and this process makes it possible to achieve efficient operation of the system and maintain the performance thereof without exerting any adverse influence the units within the system.

REFERENCES:
patent: 4160730 (1979-07-01), Nguyen
patent: 5435980 (1995-07-01), Felsvang et al.
patent: 6638485 (2003-10-01), Iida et al.
patent: 860197 (1998-08-01), None
patent: 47-15443 (1972-05-01), None
patent: 2000-197811 (2000-07-01), None

Affiliated with

Also associated with

Rating

Method for the treating in exhaust gas and exhaust gas... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the treating in exhaust gas and exhaust gas..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the treating in exhaust gas and exhaust gas... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3428916