Process for maintaining a low sodium chloride content in recycle

Details Process for maintaining a low sodium chloride content in recycle Process for maintaining a low sodium chloride content in recycle

1977-02-24

1981-03-03

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With regeneration, reclamation, reuse, recycling or...

162 36, 162DIG8, 162 30K, 162 33, 423DIG3, D21C 1102, D21C 1104

Patent

active

042539110

ABSTRACT:
A process is provided for the separation of sodium chloride in the sodium chemicals recovery stage of sodium-based pulp manufacturing processes so as to maintain a low sodium chloride content in the recycled sodium chemicals, comprising the steps of treating an aqueous sodium chloride-containing solution with carbon dioxide gas, thereby forming a saturated sodium bicarbonate solution; precipitating sodium values of the solution as sodium bicarbonate while retaining sodium chloride in solution; separating such sodium bicarbonate; withdrawing the residual aqueous sodium chloride-containing solution from the process; and recycling the separated sodium bicarbonate.

REFERENCES:
patent: 1915315 (1933-06-01), Hoffman
patent: 2909407 (1959-10-01), Ahlborg et al.
patent: 3650888 (1972-03-01), Fogman et al.
patent: 3826710 (1974-07-01), Anderson
patent: 3909344 (1975-09-01), Lukes
patent: 3996097 (1976-12-01), Fuller

Affiliated with

Also associated with

Rating

Process for maintaining a low sodium chloride content in recycle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for maintaining a low sodium chloride content in recycle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for maintaining a low sodium chloride content in recycle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-78281