Chemistry of inorganic compounds – Halogen or compound thereof – Ternary compound
Patent
1981-06-01
1982-05-04
Hearn, Brian E.
Chemistry of inorganic compounds
Halogen or compound thereof
Ternary compound
C01B 1106
Patent
active
043282008
ABSTRACT:
A continuous integrated process for the production of calcium hypochlorite in which crystals of by-product sodium chloride are more easily separated for the calcium hypochlorite product is described. The process includes: (a) introducing with agitation into a vessel an aqueous slurry of dibasic calcium hypochlorite, sodium hydroxide, and aqueous salt solution saturated with calcium ion and sodium chloride in amounts at least sufficient to substantially dilute the sodium hydroxide; (b) forwarding the resulting aqueous mixture of step (a) to a chlorination zone containing a seed bed of calcium hypochlorite and sodium chloride crystals; (c) introducing chlorine into the chlorination zone, thereby producing an aqueous suspension containing further quantities of calcium hypochlorite crystals and readily separable significantly larger sodium chloride crystals; and (d) removing aqueous suspension containing such calcium hypochlorite and sodium chloride crystals from the chlorination zone to a classification zone. Calcium hypochlorite crystals are maintained in suspension in and removed from the upper portion of the classification zone; while the larger and more dense crystals of sodium chloride settle and are removed from the lower portion of said classification zone.
REFERENCES:
patent: 1718284 (1929-06-01), George et al.
patent: 1718285 (1929-06-01), George
patent: 1937613 (1933-12-01), Weber
patent: 2007429 (1935-07-01), Klopstock et al.
patent: 2368042 (1945-01-01), Robson
patent: 2441337 (1948-05-01), Sprauer
patent: 2469901 (1949-05-01), Sprauer
patent: 3251647 (1966-05-01), Nicolaisen
patent: 3572989 (1971-03-01), Tatara et al.
patent: 3767775 (1973-10-01), Tatara
patent: 3895099 (1975-07-01), Sakowski
patent: 3950499 (1976-04-01), Miyashin
patent: 3954948 (1976-05-01), Sakowski
patent: 4258024 (1981-03-01), Hoffer
Carbaugh John E.
Crawford Roger A.
Loehr Clifford E.
Welch Cletus N.
Hearn Brian E.
PPG Industries Inc.
Stein Irwin M.
LandOfFree
Process for producing calcium hypochlorite 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 producing calcium hypochlorite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing calcium hypochlorite will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-881442