JPS5670093A - Heat-treating method of coal - Google Patents
Heat-treating method of coalInfo
- Publication number
- JPS5670093A JPS5670093A JP14442679A JP14442679A JPS5670093A JP S5670093 A JPS5670093 A JP S5670093A JP 14442679 A JP14442679 A JP 14442679A JP 14442679 A JP14442679 A JP 14442679A JP S5670093 A JPS5670093 A JP S5670093A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- gas
- rapid heating
- heat
- predrying
- 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
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
PURPOSE: To heat-treat coal effectively and economically, by predrying highly hygroscopic coal of low carbon content before rapid heating with a mixture of part of a rapid heating gas with a high-temperature air after heat exchange with waste gas as drying gas.
CONSTITUTION: Coal to be treated and drying gas are fed to a fluidized bed 2 to predry the coal. A mixture of a rapid heating gas at 500W850°C from a line 14 with high-temperature air from a line 15 after the indirect heat exchange with an outlet gas from a fluidized bed 4 at a temperature of 150W350°C and an oxygen concentration of 12W20vol% is used as the drying gas. The coal is rapidly heattreated at a heating rate of 100°C/min or more to give a moisture content of 0W5wt% at 300W 500°C. The heat-treated coal is then cooled rapidly in a fluidized bed 7 at a cooling rate of 50°C/min to 250°C or below and taken out of a line 30. The dehydration ratio in the predrying stage is preferably 60W80% based on the total of the ratios in the predrying and the rapid heating stages.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14442679A JPS5670093A (en) | 1979-11-09 | 1979-11-09 | Heat-treating method of coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14442679A JPS5670093A (en) | 1979-11-09 | 1979-11-09 | Heat-treating method of coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5670093A true JPS5670093A (en) | 1981-06-11 |
| JPS6318636B2 JPS6318636B2 (en) | 1988-04-19 |
Family
ID=15361906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14442679A Granted JPS5670093A (en) | 1979-11-09 | 1979-11-09 | Heat-treating method of coal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5670093A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59227979A (en) * | 1983-06-09 | 1984-12-21 | アトランテイツク・リツチフイ−ルド・カンパニ− | Manufacture of dry granular coal fuel with low spontaneous ignitability from granular low grade coal and device using same |
| AU729391B2 (en) * | 1997-03-31 | 2001-02-01 | Mitsubishi Heavy Industries, Ltd. | Coal drying method and equipment, method for aging reformed coal and aged reformed coal, and process and system for producing reformed coal |
| JP2008163103A (en) * | 2006-12-27 | 2008-07-17 | Mitsui Zosen Plant Engineering Inc | Reformation system of floatation filter cake |
| JP2014502655A (en) * | 2010-12-28 | 2014-02-03 | ポスコ | Coke coal drying apparatus and drying method |
-
1979
- 1979-11-09 JP JP14442679A patent/JPS5670093A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59227979A (en) * | 1983-06-09 | 1984-12-21 | アトランテイツク・リツチフイ−ルド・カンパニ− | Manufacture of dry granular coal fuel with low spontaneous ignitability from granular low grade coal and device using same |
| JPH0429715B2 (en) * | 1983-06-09 | 1992-05-19 | ||
| AU729391B2 (en) * | 1997-03-31 | 2001-02-01 | Mitsubishi Heavy Industries, Ltd. | Coal drying method and equipment, method for aging reformed coal and aged reformed coal, and process and system for producing reformed coal |
| US7744662B2 (en) | 1997-03-31 | 2010-06-29 | Mitsubishi Heavy Industries, Ltd. | Coal drying method and equipment, method for aging reformed coal and aged reformed coal, and process and system for producing reformed coal |
| US7766985B2 (en) | 1997-03-31 | 2010-08-03 | Mitsubishi Heavy Industries, Ltd. | Coal drying method and equipment, method for aging reformed coal and aged reformed coal, and process and system for producing reformed coal |
| JP2008163103A (en) * | 2006-12-27 | 2008-07-17 | Mitsui Zosen Plant Engineering Inc | Reformation system of floatation filter cake |
| JP2014502655A (en) * | 2010-12-28 | 2014-02-03 | ポスコ | Coke coal drying apparatus and drying method |
| JP2016153492A (en) * | 2010-12-28 | 2016-08-25 | ポスコ | Apparatus and method for drying coal for coke |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6318636B2 (en) | 1988-04-19 |
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