Methods for obtaining deicers from black liquor

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

162 16, 162 31, 162 35, 210651, 252 70, 530500, D21C 1100, C09K 318

Patent

active

047283939

ABSTRACT:
A deicing product comprising a mixture having, based upon the total weight of solid in said deicing product between 12% and 75% acetate salts, trace amounts and 36% carbonate salts, 1 and 24% formate salts, 1 and 32% pseudolactate salts. The cations of said salts are selected from the class consisting of sodium, magnesium, calcium, potassium. Lignin fractions and low molecular weight sugars may also be present, as well as other chemicals derived from the method of making black liquor and this new product. A method of making same is disclosed. It comprises using a black liquor obtained from a pulp mill operation, fractionating said black liquor into a low molecular weight fraction, concentrating said collected low molecular weight fraction to produce a concentrated deicing product.

REFERENCES:
patent: 2665249 (1954-01-01), Zimmermann
patent: 2926114 (1960-02-01), Grangaard et al.
patent: 3714911 (1973-02-01), Pradt
patent: 3997300 (1976-12-01), Boatwright et al.
patent: 4350599 (1982-09-01), Chowdhury
patent: 4384959 (1983-05-01), Bauer et al.
patent: 4430240 (1984-02-01), Sandvig et al.
patent: 4584057 (1986-04-01), Rowe et al.
patent: 4664832 (1987-05-01), Sandvig et al.
McBride et al., "Economic Impact of Highway Snow and Ice Control" Utah Dept. of Trans., Report No. VDTO-MR-77-5, FHEA/RD-77.95, Dec. 1977.
Chance "Corrosion, Deicing Salts, and the Environment" Materials Performance, p. 16, Oct. 1974.
Fromm, "The Corrosion of Autobody Steel and the Effects of Inhibited Deicing Salts", Dept. of Highway, Ontario, Report No. RR135, (1967).
Deicing Salts, Their Uses and Effects" NACE Group Committee T-3, Report 3W175, Material Performance 14 No. 4, 9 (1975).
Collins et al., "Spent Sulfite Liquor Reducing Sugar Purification by Ultrafiltration with Dynamic Membranes" Tappi, Jun. 1973, vol. 56, No. 6.
Bar-Sinai et al., "Separation of Sugars and Lignin in Spent Sulfite Liquor by Hydrolysis and Ultrafiltration" Tappi, vol. 59, No. 3, 1976 (Mar.).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Methods for obtaining deicers from black liquor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods for obtaining deicers from black liquor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods for obtaining deicers from black liquor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-996004

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.