JPS55147133A - Desulfurization method for byproducing gypsum - Google Patents
Desulfurization method for byproducing gypsumInfo
- Publication number
- JPS55147133A JPS55147133A JP11075874A JP11075874A JPS55147133A JP S55147133 A JPS55147133 A JP S55147133A JP 11075874 A JP11075874 A JP 11075874A JP 11075874 A JP11075874 A JP 11075874A JP S55147133 A JPS55147133 A JP S55147133A
- Authority
- JP
- Japan
- Prior art keywords
- tower
- gypsum
- slurry
- absorption
- waste gas
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/46—Sulfates
- C01F11/464—Sulfates of Ca from gases containing sulfur oxides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To eliminate the need of separate oxidation equipment through enhanced absorbent utilization factor, prevention of gypsum scale deposition, and gypsum production in absorption equipment by a method wherein air is blown into the absorption equipment to make oxgen concentration in gas higher there than in waste gas itself.
CONSTITUTION: A waste gas having high content of SO2 is humidified and freed from dust in a cooling tower 2, then is guided into the first absorption tower 7 where the gas contacts, at pH 4, lime slurry reacted to some degree, supplied from the second absorption tower. Either fine bubble generator is installed in a liquid sump 11 or air is directly admitted to the inlet 11' of the absorption tower, so that oxygen concentration is increased in the tower to effect completion of absorbent reaction to produce gypsum. Part of slurry circulated from the tower 7 is passed through a settler 14 and a centrifugal separator 15 to recover the gypsum 16. Overflowed liquid 17' and filtered liquid 17 are sent to raw-lime-slurry control tank 19. Waste gas from the tower 7 enters the second absorption tower 8, where SO2 is removed by high-absorbent slurry of pH more than 6, supplied from the control tank 19, and is discharged.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075874A JPS55147133A (en) | 1974-09-26 | 1974-09-26 | Desulfurization method for byproducing gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11075874A JPS55147133A (en) | 1974-09-26 | 1974-09-26 | Desulfurization method for byproducing gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55147133A true JPS55147133A (en) | 1980-11-15 |
Family
ID=14543805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11075874A Pending JPS55147133A (en) | 1974-09-26 | 1974-09-26 | Desulfurization method for byproducing gypsum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55147133A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088611C (en) * | 1997-11-05 | 2002-08-07 | 三菱重工业株式会社 | Wet flue gas desulfurizer and oxygen-containing gas blowing device for use therein |
-
1974
- 1974-09-26 JP JP11075874A patent/JPS55147133A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1088611C (en) * | 1997-11-05 | 2002-08-07 | 三菱重工业株式会社 | Wet flue gas desulfurizer and oxygen-containing gas blowing device for use therein |
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