Desulfurization process for flue gases

Details Desulfurization process for flue gases Desulfurization process for flue gases

1998-06-12

2000-03-21

Griffin, Steven P.

Data processing: generic control systems or specific application

Specific application, apparatus or process

Chemical process control or monitoring system

42324301, 42324308, 423DIG5, 422105, 700282, G05B 100

Patent

active

060412720

ABSTRACT:
Formation of calcium sulfite in a desulfurization column for desulfurizing flue gas is prevented by maintaining the pH of the sorption liquid in the column in the range of 5.5-7.0 and the chemical oxygen demand of the sorption liquid below an upper value determined by the concentration of magnesium sulfate. The upper value of the chemical oxygen demand of the sorption liquid can be controlled by maintaining the quantity of magnesium sulfate in an oxidization vessel arranged downstream of the desulfurization column. The oxidized liquid discharged from the oxidization vessel is neutralized in a double composition vessel, and the thus-obtained slurry is returned directly to the desulfurization column. By preventing formation of calcium sulfite, high-quality gypsum is formed in the double composition vessel.

REFERENCES:
patent: 3897540 (1975-07-01), Onnen
patent: 4193971 (1980-03-01), Kawamata et al.
patent: 5039499 (1991-08-01), Stowe, Jr.
patent: 5676915 (1997-10-01), Iiyama et al.
patent: 5757660 (1998-05-01), Musow

Affiliated with

Also associated with

Rating

Desulfurization process for flue gases does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Desulfurization process for flue gases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Desulfurization process for flue gases will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-737810