Process for the removal of chlorate and hypochlorite from spent

Details Process for the removal of chlorate and hypochlorite from spent Process for the removal of chlorate and hypochlorite from spent

1982-06-30

1983-09-20

Andrews, Richard

Liquid purification or separation

Processes

Chemical treatment

210750, 210765, 204 98, 204128, C25B 134

Patent

active

044054653

ABSTRACT:
A process is described for reducing the concentration of oxyhalogen impurities in an alkali metal halide brine recovered from an electrolytic cell which comprises circulating the alkali metal halide brine to a treatment zone outside of the electrolytic cell. Within the treatment zone, the alkali metal halide brine is reacted with oxalic acid while maintaining the alkali metal halide brine at a pH of less than about 4.5. A purified brine having a substantially reduced concentration of oxyhalogen impurities is recovered from the treatment zone. The process may be employed in treating brines recovered from mercury cells and membrane cells for the production of chlorine and alkali metal hydroxides and its employment results in a substantial reduction in the amount of concentrated acid required in brine treatment and a reduction in energy costs for brine purification.

REFERENCES:
patent: 3891747 (1975-06-01), Galecki et al.
patent: 4272338 (1981-06-01), Lynch et al.
patent: 4303624 (1981-12-01), Dotson et al.

Affiliated with

Also associated with

Rating

Process for the removal of chlorate and hypochlorite from spent 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 the removal of chlorate and hypochlorite from spent , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the removal of chlorate and hypochlorite from spent will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-586607