JPS5564825A - Treating method for lean waste gas containing sulfurous acid gas - Google Patents
Treating method for lean waste gas containing sulfurous acid gasInfo
- Publication number
- JPS5564825A JPS5564825A JP13633178A JP13633178A JPS5564825A JP S5564825 A JPS5564825 A JP S5564825A JP 13633178 A JP13633178 A JP 13633178A JP 13633178 A JP13633178 A JP 13633178A JP S5564825 A JPS5564825 A JP S5564825A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- sulfuric acid
- towers
- manufacturing
- tower
- 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
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To obtain a desired concentration of dilute sulfuric acid by a manufacturing method of dilute sulfuric acid for industrial purpose from sulfurous acid-lean waste gas, in which conc. sulfuric acid is circulated inside a nitric acid process sulfuric acid manufacturing apparatus.
CONSTITUTION: A waste gas containing a small amount (2vol% or less) of sulfurous acid gas is passed through a wet dust collector and then introduced into a nitric acid process sulfuric acid manufacturing apparatus, where the sulfurous acid is converted into sulfuric acid by absorption, etc., during passage through the desulfurizing tower 1, the manufacturing towers 2 and 3, and the nitric acid-arresting towers 4W6, and then held in nitrose circulating inside the apparatus. In this case, a more than 90wt% conc. industrial sulfuric acid is added as a circulating acid to at least one tower of the denitrifying tower 1, the sulfuric acid-manufacturing towers 2 and 3, and the nitric acid-arresting towers 4W6, whereby, while measuring the concentration of acid circulating in each tower, a 60W80wt% industrial dilute sulfuric acid can be desirably manufactured.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13633178A JPS5564825A (en) | 1978-11-07 | 1978-11-07 | Treating method for lean waste gas containing sulfurous acid gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13633178A JPS5564825A (en) | 1978-11-07 | 1978-11-07 | Treating method for lean waste gas containing sulfurous acid gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5564825A true JPS5564825A (en) | 1980-05-15 |
Family
ID=15172715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13633178A Pending JPS5564825A (en) | 1978-11-07 | 1978-11-07 | Treating method for lean waste gas containing sulfurous acid gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5564825A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4936859A (en) * | 1972-08-23 | 1974-04-05 | ||
| JPS51112795A (en) * | 1975-03-10 | 1976-10-05 | Ciba Geigy Ag | Process for separation of sulfur dioxide from gas flow while manufacturing sulfric acid by nitrogen oxide process |
-
1978
- 1978-11-07 JP JP13633178A patent/JPS5564825A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4936859A (en) * | 1972-08-23 | 1974-04-05 | ||
| JPS51112795A (en) * | 1975-03-10 | 1976-10-05 | Ciba Geigy Ag | Process for separation of sulfur dioxide from gas flow while manufacturing sulfric acid by nitrogen oxide process |
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