Method for recovering sodium chemicals from green liquor and flu

Details Method for recovering sodium chemicals from green liquor and flu Method for recovering sodium chemicals from green liquor and flu

1982-08-23

1984-09-11

Doll, John

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkali metal

423DIG3, B01D 5354

Patent

active

044709579

ABSTRACT:
The invention relates to a method for recovering sodium chemicals from green liquor by precarbonating green liquor by means of flue gases, by bringing a precarbonated solution into contact with a sodium bicarbonate solution and by stripping hydrogen sulphide from the so obtained reaction mixture by means of steam, for producing hydrogen sulphide gas and a sodium carbonate solution, which sodium carbonate solution is so pure, in relation to sodium sulphide that it can directly be led into the washing of the flue gases and into a carbonation stage, for producing the sodium bicarbonate solution.
In order to save steam and sodium carbonate all precarbonated solution is not treated to the sodium sulphide free solution, which is required by a scrubber, but a part is discharged at higher sodium sulphide content by dividing the stripping into two stages which take place one above the other in the same tower, whereby a part of a solution obtained from the first stripping stage is led directly into the second stripping stage and the steams containing hydrogen sulphide, obtained from the second stripping stage are led directly into the first stripping stage.

REFERENCES:
patent: 3826710 (1974-07-01), Anderson
patent: 4187279 (1980-02-01), Rimpi

Affiliated with

Also associated with

Rating

Method for recovering sodium chemicals from green liquor and flu 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 recovering sodium chemicals from green liquor and flu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovering sodium chemicals from green liquor and flu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1194269