Patent · US Expired

Continuous process for making calcium hypochlorite

US4364917A · kind A · utility

2Cited by

6References

4Claims

0Family size

Assignee

C-I-L, Inc. · CA

Inventors

Herman H. Tiedemann · Wijkermeerstraat, US
Gilbert Thibault · Coquitlam, CA
Joseph G. J. Laberge · Oakville, CA

Key dates

Filing date	Feb 26, 1982
Grant date	Dec 21, 1982
Priority date	—
Expiry date	Feb 26, 2002

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2219/00164
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process for the continuous preparation of a slurry of calcium hypochlorite wherein a solution of sodium hydroxide is fed to one end of an elongated tubular reaction and a calcium hydroxide slurry and chlorine are introduced through a number of injection sites along the length of the reactor. The redox potential of the reaction mixture at any injection site must not be inferior to that at the immediately preceding site and must be in the range 900 to 950 mV at the exit end of the reactor. The process permits easy control of the reaction temperature and of the viscosity of the reaction mixture.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.