Feeding device and process and feeding system which utilize...

Details Feeding device and process and feeding system which utilize... Feeding device and process and feeding system which utilize...

2007-02-20

2007-02-20

Bos, Steven (Department: 1754)

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Alkaline earth metal

C423S183000, C423S184000, C423S432000, C423S641000, C162S029000, C162S030110

Reexamination Certificate

active

10430776

ABSTRACT:
Feeding device for feeding burned lime to a reaction vessel for causticizing a soda liquor to caustic soda. The feeding device, in its upper part, comprises an inlet for a slurry of the burned lime and the soda liquor for formation of said slurry inside said feeding device. The system further comprises a tall and slender feed vessel having a lower part having an outlet defined therein for the slurry. The outlet, via a pump, is operatively connected to the reaction vessel. The process and the feeding system utilize the feeding device, in which process the slurry is created of the burned lime and a first part of the soda liquor, a second part being preheated before addition to the slurry, whereafter slaking and causticizing reactions are completed under elevated temperature and pressure.

REFERENCES:
patent: 2211908 (1940-08-01), O'Connor
patent: 3194638 (1965-07-01), Neuville
patent: 3268388 (1966-08-01), Bauman et al.
patent: 4302281 (1981-11-01), Ryham
patent: 4627888 (1986-12-01), Engdahl
patent: 4894217 (1990-01-01), Ostman
patent: 5145556 (1992-09-01), Westerberg et al.

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