JPS5722117A - Purifying method of electrolytic brine - Google Patents
Purifying method of electrolytic brineInfo
- Publication number
- JPS5722117A JPS5722117A JP9265680A JP9265680A JPS5722117A JP S5722117 A JPS5722117 A JP S5722117A JP 9265680 A JP9265680 A JP 9265680A JP 9265680 A JP9265680 A JP 9265680A JP S5722117 A JPS5722117 A JP S5722117A
- Authority
- JP
- Japan
- Prior art keywords
- brine
- tank
- calcium
- passed
- fed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE: To purify an electrolytic brine without adversely affecting phosphoric acid, by reducing the pH of a brine containing the phosphoric acid (salt), adding calcium chloride thereto, and removing sulfate radicals as calcium sulfate.
CONSTITUTION: Hydrogen chloride is added to a brine returned from an electrolytic cell to reduce the pH to 4 or below, and then passed through a dechlorinating step (A) by blowing air (A') thereinto. The brine after the dechlorinating step (A) is branched and passed through a reaction tank 1. Calcium chloride is added to the brine in the tank 1 and reacted with sulfate radicals in the brine to form calcium sulfate dihydrate. The reaction solution is then fed to a settling tank 2, and the supernatant liquid is passed through most of the brine resaturated with a raw material salt (B') after the resaturating step (B). The joined brine is then fed to a step (C) for removing th calcium and magnesium. Sludges of the calcium sulfate dihydrate formed in the bottom of the settling tank 2 are collected in a receiving tank 3 and circulated through the reaction tank 1.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9265680A JPS5722117A (en) | 1980-07-09 | 1980-07-09 | Purifying method of electrolytic brine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9265680A JPS5722117A (en) | 1980-07-09 | 1980-07-09 | Purifying method of electrolytic brine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5722117A true JPS5722117A (en) | 1982-02-05 |
Family
ID=14060506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9265680A Pending JPS5722117A (en) | 1980-07-09 | 1980-07-09 | Purifying method of electrolytic brine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5722117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5176801A (en) * | 1991-03-01 | 1993-01-05 | Krebs & Cie | Sulfate removal from alkali metal chlorate solutions and production of alkali metal chlorate including said removal |
| JP2008247647A (en) * | 2007-03-29 | 2008-10-16 | Mitsui Eng & Shipbuild Co Ltd | Manufacture method of sodium chloride aqueous solution for industrial use |
-
1980
- 1980-07-09 JP JP9265680A patent/JPS5722117A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5176801A (en) * | 1991-03-01 | 1993-01-05 | Krebs & Cie | Sulfate removal from alkali metal chlorate solutions and production of alkali metal chlorate including said removal |
| JP2008247647A (en) * | 2007-03-29 | 2008-10-16 | Mitsui Eng & Shipbuild Co Ltd | Manufacture method of sodium chloride aqueous solution for industrial use |
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