JPS5645740A - Recovering method of sulfurous acid gas from waste gas - Google Patents
Recovering method of sulfurous acid gas from waste gasInfo
- Publication number
- JPS5645740A JPS5645740A JP12145079A JP12145079A JPS5645740A JP S5645740 A JPS5645740 A JP S5645740A JP 12145079 A JP12145079 A JP 12145079A JP 12145079 A JP12145079 A JP 12145079A JP S5645740 A JPS5645740 A JP S5645740A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- sulfurous acid
- concentrated
- waste gas
- sent
- 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 recover liquefied SO2 by a method wherein activated semicoke is used to adsorb sulfurous acid gas in the waste gas, is subject to desorption by heating, and the obtained conc. SO2 gas is further concentrated and compressed.
CONSTITUTION: The activated semicoke provided by dry distillation and activation of coal is used as an adsorbent in the adsorption column 12 to adsorb sulfurous acid gas in the waste gas 11. Then, the semicoke 14 having sulfuric acid on its surface is sent to a desorption column 15 and is treated with heat desorption to obtain concentrated SO2 gas. The SO2 gas 17 is sent to a dehumidifying column 18 to be brought into contact with conc. H2SO4 25 so that the SO2 gas is dehydrated and concentrated. The dehumidified gas 20 containing highly concentrated SO2 is sent to a compressor 21 and liquefied SO2 is recovered. In this manner, a high yield recovery of liquefied SO2 from sulfurous acid gas in the waste gas is given in the dry-type desulfurization process so that it can be used as an industrial base material.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12145079A JPS5645740A (en) | 1979-09-20 | 1979-09-20 | Recovering method of sulfurous acid gas from waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12145079A JPS5645740A (en) | 1979-09-20 | 1979-09-20 | Recovering method of sulfurous acid gas from waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5645740A true JPS5645740A (en) | 1981-04-25 |
Family
ID=14811427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12145079A Pending JPS5645740A (en) | 1979-09-20 | 1979-09-20 | Recovering method of sulfurous acid gas from waste gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5645740A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62241637A (en) * | 1986-04-10 | 1987-10-22 | Hitachi Seiki Co Ltd | Cutting feed setting device for nc machine tool |
| JPS63174857A (en) * | 1987-01-16 | 1988-07-19 | Noritake Co Ltd | Method and device of detecting casting skin surface around burr in casting burr removing work |
| CN113562702A (en) * | 2021-08-25 | 2021-10-29 | 福建福豆新材料有限公司 | Method for purifying high-purity electronic-grade sulfur dioxide |
-
1979
- 1979-09-20 JP JP12145079A patent/JPS5645740A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62241637A (en) * | 1986-04-10 | 1987-10-22 | Hitachi Seiki Co Ltd | Cutting feed setting device for nc machine tool |
| JPS63174857A (en) * | 1987-01-16 | 1988-07-19 | Noritake Co Ltd | Method and device of detecting casting skin surface around burr in casting burr removing work |
| CN113562702A (en) * | 2021-08-25 | 2021-10-29 | 福建福豆新材料有限公司 | Method for purifying high-purity electronic-grade sulfur dioxide |
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