JPS57204296A - Treatment of coal ash - Google Patents
Treatment of coal ashInfo
- Publication number
- JPS57204296A JPS57204296A JP56087870A JP8787081A JPS57204296A JP S57204296 A JPS57204296 A JP S57204296A JP 56087870 A JP56087870 A JP 56087870A JP 8787081 A JP8787081 A JP 8787081A JP S57204296 A JPS57204296 A JP S57204296A
- Authority
- JP
- Japan
- Prior art keywords
- water
- adherence
- pit
- bottle
- inhibit
- 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
Abstract
PURPOSE: To inhibit the adherence of scales to piping or the like, by blowing carbon dioxide-contng. gas into the slurry mixture of coal ash and circulating water until the pH value of the slurry mixture comes at 9.5W11.5.
CONSTITUTION: Water in a bottle 1 is classified into a part to be let flow toward a jet pump 2 and the other part to be let flow toward a pit 12. The water in the pit 12 is let flow into a precipitating vessel 4 by a pump 13. In this way, the liquid is circulated in the closed system. Since the water in the bottle 1 is transferred to the upper portion 14 of a boiler, water is supplemented into a water-reserving vessel 5 in response to the transferred amount. In this cycle, the increase of calcium content in the system in detected as the pH change of the circulating liquid, and the amount of exhaust gas is controlled in a manner such that the detected pH value is held at 9.5W11.5. Consequently, the calcium content in the circulating water is reacted with carbon dioxide, and the oversaturated calcium carbonate part is separated to inhibit the adherence of calcium carbonate.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56087870A JPS57204296A (en) | 1981-06-08 | 1981-06-08 | Treatment of coal ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56087870A JPS57204296A (en) | 1981-06-08 | 1981-06-08 | Treatment of coal ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57204296A true JPS57204296A (en) | 1982-12-14 |
Family
ID=13926898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56087870A Pending JPS57204296A (en) | 1981-06-08 | 1981-06-08 | Treatment of coal ash |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57204296A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170311A (en) * | 1983-03-16 | 1984-09-26 | Nippon Solid Co Ltd | Reclamation by coal cinder |
| JPS59170310A (en) * | 1983-03-16 | 1984-09-26 | Nippon Solid Co Ltd | Reclamation of coal cinder |
| JPS6365988A (en) * | 1986-09-08 | 1988-03-24 | Hitachi Zosen Corp | Harmless treatment of ash collected in electrostatic precipitator by utilizing co2 contained in exhaust gas |
| JP2015089864A (en) * | 2013-11-07 | 2015-05-11 | 太平洋セメント株式会社 | Method for using incineration ash as cement raw material |
-
1981
- 1981-06-08 JP JP56087870A patent/JPS57204296A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59170311A (en) * | 1983-03-16 | 1984-09-26 | Nippon Solid Co Ltd | Reclamation by coal cinder |
| JPS59170310A (en) * | 1983-03-16 | 1984-09-26 | Nippon Solid Co Ltd | Reclamation of coal cinder |
| JPS6365988A (en) * | 1986-09-08 | 1988-03-24 | Hitachi Zosen Corp | Harmless treatment of ash collected in electrostatic precipitator by utilizing co2 contained in exhaust gas |
| JP2015089864A (en) * | 2013-11-07 | 2015-05-11 | 太平洋セメント株式会社 | Method for using incineration ash as cement raw material |
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