JPS5742505A - Production of caustic alkali and halogen - Google Patents
Production of caustic alkali and halogenInfo
- Publication number
- JPS5742505A JPS5742505A JP11560680A JP11560680A JPS5742505A JP S5742505 A JPS5742505 A JP S5742505A JP 11560680 A JP11560680 A JP 11560680A JP 11560680 A JP11560680 A JP 11560680A JP S5742505 A JPS5742505 A JP S5742505A
- Authority
- JP
- Japan
- Prior art keywords
- alkali
- halogen
- react
- nitrogen dioxide
- energy
- 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.)
- Granted
Links
Landscapes
- Compounds Of Iron (AREA)
Abstract
PURPOSE: When caustic alkali and halogen are produced from alkali metal halide, a thermochemical process is utilized, but not an electrolytic process, to increase the utilization effeciency of energy necessary for the production.
CONSTITUTION: An alkali metal halide is made to react with nitrogen dioxide at 150W350°C to form an alkali nitrite and a halogen and the alkali nitrite is made to react with iron (III) oxide at temperatue higher than 500°C to form an alkali ferrate and nitrogen dioxide. :The resultant nitrogen dioxide is recycled and used in the first reaction. The alkali ferrate is made to react with water at temperture higher than 40°C to effect hydrolysis into the objective caustic alkali and iron (III) oxide. The caustic alkali is obtained in the process and the halogen is in the first process using chemical reactions utilizing thermal energy, but not by electrolysis, which use electric energy obtained from thermal energy. Therefore, this process is higher efficient than the electrolysis in terms of energy.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11560680A JPS5842121B2 (en) | 1980-08-21 | 1980-08-21 | Method for producing caustic alkali and halogen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11560680A JPS5842121B2 (en) | 1980-08-21 | 1980-08-21 | Method for producing caustic alkali and halogen |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5742505A true JPS5742505A (en) | 1982-03-10 |
JPS5842121B2 JPS5842121B2 (en) | 1983-09-17 |
Family
ID=14666791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11560680A Expired JPS5842121B2 (en) | 1980-08-21 | 1980-08-21 | Method for producing caustic alkali and halogen |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5842121B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6148401A (en) * | 1984-08-15 | 1986-03-10 | Agency Of Ind Science & Technol | Treatment of caliche |
-
1980
- 1980-08-21 JP JP11560680A patent/JPS5842121B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6148401A (en) * | 1984-08-15 | 1986-03-10 | Agency Of Ind Science & Technol | Treatment of caliche |
Also Published As
Publication number | Publication date |
---|---|
JPS5842121B2 (en) | 1983-09-17 |
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