Paper making and fiber liberation – Processes and products – With measuring – inspecting and/or testing
Patent
1992-09-03
1995-05-30
Jones, W. Gary
Paper making and fiber liberation
Processes and products
With measuring, inspecting and/or testing
162 301, 162263, 423DIG3, D21C 1106, D21C 1108
Patent
active
054198127
ABSTRACT:
In general, the invention features method for regulating sulfur dioxide emissions from the recovery furnace of a Kraft paper mill. The method includes:
(a) identifying predetermined responses, wherein each said response either permits or inhibits adjustment of black liquor temperature and wherein adjustment of black liquor temperature is an increase or decrease in temperature, each said response being associated with a particular potential combination of the status of upper furnace temperature, hot zone temperature, and sulfur dioxide concentration within said furnace, said status being increasing, decreasing or unchanged;
(b) periodically measuring upper furnace temperature, hot zone temperature, and sulfur dioxide concentration within said furnace;
(c) determining whether upper furnace temperature, hot zone temperature, and sulfur dioxide concentration within said furnace is increasing, decreasing or is substantially unchanged;
(d) using said determinations to calculate a composite state variable;
(e) correlating said composite state variable with a said predetermined response; and
(f) carrying out said predetermined response correlating to said composite state variable.
REFERENCES:
patent: 4683841 (1987-08-01), Andersson et al.
patent: 4768469 (1988-09-01), Iizuka et al.
Terry Adams, "Kraft Recovery Boiler Physical & Chem Processes", 1988, API, pp. 34-47, 234-241.
Jones W. Gary
Nguyen Dean T.
The Foxboro Company
LandOfFree
Method for regulating sulfur dioxide emissions from a recovery f 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 regulating sulfur dioxide emissions from a recovery f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for regulating sulfur dioxide emissions from a recovery f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-359319