JPS5477296A - Ph control for oxidation tower gypsum slurry in wet type stack gas desulfurization apparatus - Google Patents
Ph control for oxidation tower gypsum slurry in wet type stack gas desulfurization apparatusInfo
- Publication number
- JPS5477296A JPS5477296A JP14479777A JP14479777A JPS5477296A JP S5477296 A JPS5477296 A JP S5477296A JP 14479777 A JP14479777 A JP 14479777A JP 14479777 A JP14479777 A JP 14479777A JP S5477296 A JPS5477296 A JP S5477296A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- slurry
- oxidation tower
- absorber
- sulfuric acid
- 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
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Treating Waste Gases (AREA)
Abstract
PURPOSE: To stabilize the pH of slurry at oxidation tower and also to raise the economy of sulfuric acid consumptin by calculating unreacted Ca compound coming into the oxidation tower of stack gas desulfurization apparatus based on a wet type lime-gypsum method and then by increasing or decreaing the amount of sulfuric aic to be added to oxidation tower in advance according to the calculated unreacted Ca compound amount.
CONSTITUTION: The flow rate of the slurry 19 coming out of the absorber 1 is detected by the flow meter 27 and then sent to the oxidation tower 7. In this case, the pH of the slurry at the oxidation tower is regulated to 2 to 5.5 by controlling the amount of sulfuric acid to be added 8. The operation signal 26 for the supply of sulfuric acid is formed as follows: that is, the function device 20 is provided for calculating the concentration of unreacted Ca compound form the pH value of circulating slurry in absorber in order to obtain the operational signal 2. And, the pH of circulating slurry in absorber is regulated to 4 to 8 according to the degree of desulfurization. On the othe hand, the flow rate of slurry coming out of absorber is detected by the flow meter 27 to obtain the signal 22. Then, the signal 21 and the signal 22 are multiplied by the multiplier 23 to obtain the feed forward signal 24. The signal 24 and the oxidation gypsum slurry regulator output signal 11 are added by the ratio adder 25 to obtain the operational signal 26 of the sulfuric acid supply operational value 12.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479777A JPS5477296A (en) | 1977-12-02 | 1977-12-02 | Ph control for oxidation tower gypsum slurry in wet type stack gas desulfurization apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479777A JPS5477296A (en) | 1977-12-02 | 1977-12-02 | Ph control for oxidation tower gypsum slurry in wet type stack gas desulfurization apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5477296A true JPS5477296A (en) | 1979-06-20 |
Family
ID=15370672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14479777A Pending JPS5477296A (en) | 1977-12-02 | 1977-12-02 | Ph control for oxidation tower gypsum slurry in wet type stack gas desulfurization apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5477296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593653A (en) * | 2021-07-05 | 2021-11-02 | 国能龙源环保有限公司 | Method for optimally controlling overall economic benefits of wet desulphurization device |
-
1977
- 1977-12-02 JP JP14479777A patent/JPS5477296A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113593653A (en) * | 2021-07-05 | 2021-11-02 | 国能龙源环保有限公司 | Method for optimally controlling overall economic benefits of wet desulphurization device |
| CN113593653B (en) * | 2021-07-05 | 2023-10-20 | 国能龙源环保有限公司 | Wet desulfurization device overall economic benefit optimal control method |
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