Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – With regeneration – reclamation – reuse – recycling or...
Patent
1985-07-25
1986-10-28
Schor, Kenneth M.
Paper making and fiber liberation
Processes of chemical liberation, recovery or purification...
With regeneration, reclamation, reuse, recycling or...
34 10, 162 301, 162 3011, 162 47, D21C 1100, D21C 1110
Patent
active
046197320
ABSTRACT:
Pulping liquor, which has been pre-concentrated to at least 50 weight percent solids, is dried in a fluidized bed dryer to produce a solid in particulate form. In the fluidized bed dryer, pre-formed particulates are fluidized by a gaseous medium substantially of superheated, unsaturated steam, and additional heat is supplied to the fluidized bed by higher pressure saturated steam passing through heat-exchange tubing within the fluidized bed region. Pulping liquor is introduced into the fluidized bed where the superheated steam vaporizes a substantial portion of its water content. The fluidizing steam becomes substantially saturated during its passage through the region of the fluidized bed, and a substantial portion of this substantially saturated steam is used upstream to pre-concentrate the pulping liquor. The solid particulates that are continuously withdrawn from the region of the bed have several advantages relative to a pulping liquor as a fuel for a pulping chemical recovery furnace, including increased thermal efficiency and storability until time of use.
REFERENCES:
patent: 3053615 (1962-09-01), Steinert
patent: 3322492 (1967-05-01), Flood
patent: 3657064 (1972-04-01), Shick
patent: 3674630 (1972-07-01), Copeland
patent: 4135968 (1979-01-01), Dehaas
patent: 4245395 (1981-01-01), Potter
patent: 4284416 (1981-08-01), Nahas
patent: 4295281 (1981-10-01), Potter
patent: 4363698 (1982-12-01), Nelson et al.
patent: 4377439 (1983-03-01), Liem
Cartwright Timothy B.
Clay David T.
Hastings K. M.
Schor Kenneth M.
The Institute of Paper Chemistry
LandOfFree
Method for drying pulping liquor to a burnable solid 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 drying pulping liquor to a burnable solid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for drying pulping liquor to a burnable solid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1345030