JPS55161892A - Heat-treatment of coal - Google Patents
Heat-treatment of coalInfo
- Publication number
- JPS55161892A JPS55161892A JP6886579A JP6886579A JPS55161892A JP S55161892 A JPS55161892 A JP S55161892A JP 6886579 A JP6886579 A JP 6886579A JP 6886579 A JP6886579 A JP 6886579A JP S55161892 A JPS55161892 A JP S55161892A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- temperature
- rapidly
- heated
- highly hygroscopic
- 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 highten the calorific value per unit weight, by converting low-carbon content, high-equilibrium moisture content and highly hygroscopic coal into lowly hygroscopic coal by rapidly heating the highly hygroscopic coal with high-temperature gas and then, rapidly cooling the heated coal.
CONSTITUTION: In drying and heat-treating highly hygroscopic coal having a carbon content as low as about below 80% (dry ash-free base) and an equilibrium moisture content as high as about more than 5wt%, with high-temperature gas, the coal is rapidly heated to the final heating temperature of 300W500°C, at a rate of rise of temperature, of at least 100°C/min, and then, the heated coal is rapidly cooled to 250°C or below, at a rate drop of temperature of, at least 50°C/min. Thereby, a tar component which exudes to the surfaces of coal through micropores of coal by the action of pyrolysis of coal is not evaporated and solidified to pulg the micropores. Consequently, the high hydroscopicity of the coal is reduced by decrease in the specific surface area of the coal.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6886579A JPS55161892A (en) | 1979-06-04 | 1979-06-04 | Heat-treatment of coal |
| AU58876/80A AU533482B2 (en) | 1979-06-04 | 1980-05-29 | Heat treating coal to reduce moisture and lower hygrosopicity |
| US06/154,760 US4308668A (en) | 1979-06-04 | 1980-05-30 | Process for heat treatment of coal |
| CA353,238A CA1125007A (en) | 1979-06-04 | 1980-06-03 | Process for heat treatment of coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6886579A JPS55161892A (en) | 1979-06-04 | 1979-06-04 | Heat-treatment of coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55161892A true JPS55161892A (en) | 1980-12-16 |
| JPS5711596B2 JPS5711596B2 (en) | 1982-03-05 |
Family
ID=13385972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6886579A Granted JPS55161892A (en) | 1979-06-04 | 1979-06-04 | Heat-treatment of coal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55161892A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7524341B2 (en) | 1997-03-31 | 2009-04-28 | 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 |
-
1979
- 1979-06-04 JP JP6886579A patent/JPS55161892A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7524341B2 (en) | 1997-03-31 | 2009-04-28 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5711596B2 (en) | 1982-03-05 |
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