JPS57162791A - Chemical deashing method of coal - Google Patents
Chemical deashing method of coalInfo
- Publication number
- JPS57162791A JPS57162791A JP4766281A JP4766281A JPS57162791A JP S57162791 A JPS57162791 A JP S57162791A JP 4766281 A JP4766281 A JP 4766281A JP 4766281 A JP4766281 A JP 4766281A JP S57162791 A JPS57162791 A JP S57162791A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- ash
- ammonium fluoride
- acidic ammonium
- aqueous solution
- 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.)
- Granted
Links
Landscapes
- Extraction Or Liquid Replacement (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
PURPOSE: To deash coal very effectively independently of the kinds of the coal, by finely pulverizing the coal containing the ash, and treating the finely pulverized coal with citiric acid and acidic ammonium fluoride.
CONSTITUTION: Coal containing ash is finely pulverized to give a fine particulate coal having a particle size preferably ≤100 mesh, and then dipped in an aqueous solution containing citric acid and acidic ammonium fluoride to cause the to react ash. After removing the ash, the coal is taken out of the aqueous solution. The concentrations of the citric acid and acidic ammonium fluoride in the treating solution are preferably in the range of 2.0W10.0wt% respectively.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4766281A JPS57162791A (en) | 1981-03-30 | 1981-03-30 | Chemical deashing method of coal |
US06/356,337 US4424062A (en) | 1981-03-13 | 1982-03-09 | Process and apparatus for chemically removing ash from coal |
NZ199964A NZ199964A (en) | 1981-03-13 | 1982-03-09 | A process for chemically removing ash from coal |
GB8206972A GB2094830B (en) | 1981-03-13 | 1982-03-10 | Process and apparatus for chemically removing ash from coal with acid and nh4f |
DE3208704A DE3208704C2 (en) | 1981-03-13 | 1982-03-11 | Process for the chemical removal of ash from coal and devices for carrying out this process |
CA000398285A CA1169800A (en) | 1981-03-13 | 1982-03-12 | Process and apparatus for chemically removing ash from coal |
AU81348/82A AU532092B2 (en) | 1981-03-13 | 1982-03-12 | Deashing coal with acid ammonium chloride |
BR8201410A BR8201410A (en) | 1981-03-13 | 1982-03-15 | PROCESS AND APPARATUS TO REMOVE CHARCOAL ASH FROM CHEMICAL |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4766281A JPS57162791A (en) | 1981-03-30 | 1981-03-30 | Chemical deashing method of coal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57162791A true JPS57162791A (en) | 1982-10-06 |
JPS6259757B2 JPS6259757B2 (en) | 1987-12-12 |
Family
ID=12781469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4766281A Granted JPS57162791A (en) | 1981-03-13 | 1981-03-30 | Chemical deashing method of coal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57162791A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6026093A (en) * | 1983-07-22 | 1985-02-08 | Hitachi Zosen Corp | Preparation of deashed coal |
JP2010202871A (en) * | 2009-02-27 | 2010-09-16 | General Electric Co <Ge> | Dehydration system and method for improving combined cycle efficiency of coal electricity generating apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50151201A (en) * | 1974-05-23 | 1975-12-04 | ||
JPS55133487A (en) * | 1979-03-16 | 1980-10-17 | Kinneret Ets Ltd | Method of deashing coal |
-
1981
- 1981-03-30 JP JP4766281A patent/JPS57162791A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50151201A (en) * | 1974-05-23 | 1975-12-04 | ||
JPS55133487A (en) * | 1979-03-16 | 1980-10-17 | Kinneret Ets Ltd | Method of deashing coal |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6026093A (en) * | 1983-07-22 | 1985-02-08 | Hitachi Zosen Corp | Preparation of deashed coal |
JP2010202871A (en) * | 2009-02-27 | 2010-09-16 | General Electric Co <Ge> | Dehydration system and method for improving combined cycle efficiency of coal electricity generating apparatus |
US8968430B2 (en) | 2009-02-27 | 2015-03-03 | General Electric Company | Dewatering system and process for increasing the combined cycle efficiency of a coal powerplant |
Also Published As
Publication number | Publication date |
---|---|
JPS6259757B2 (en) | 1987-12-12 |
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