JPS56157494A - Heat treatment of coal - Google Patents
Heat treatment of coalInfo
- Publication number
- JPS56157494A JPS56157494A JP5963580A JP5963580A JPS56157494A JP S56157494 A JPS56157494 A JP S56157494A JP 5963580 A JP5963580 A JP 5963580A JP 5963580 A JP5963580 A JP 5963580A JP S56157494 A JPS56157494 A JP S56157494A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- quenched
- steam
- carbon content
- temperature gas
- 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
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
PURPOSE: To reform highly hydroscopic coal to produce coal having low hygroscopicity and to increase calorific value per unit weight, by a method wherein the highly hydroscopic coal having a low carbon content and a high equilibrium moisture value is rapidly heated with a high-temperature gas contg. steam, and then quenched.
CONSTITUTION: Hightly hygroslopic coal having a low carbon content (on a dry ash-free basis) of 30% or lower and a high equilibrium moisture value of 5wt% or higher, is heated rapidly to a final heating temp. of 300W500°C at a heating rate of at least 100°C/min. by using a high-temperature gas contg. at least 20vol% steam, and then quenched to 250°C or lower at a cooling rate of at least 50°C/min. Hygroscopicity can be lowered by utilizing the heat decomposition action of coal without causing the destruction of the particle diameter of coal.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5963580A JPS56157494A (en) | 1980-05-06 | 1980-05-06 | 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 |
---|---|---|---|
JP5963580A JPS56157494A (en) | 1980-05-06 | 1980-05-06 | Heat treatment of coal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56157494A true JPS56157494A (en) | 1981-12-04 |
Family
ID=13118880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5963580A Pending JPS56157494A (en) | 1979-06-04 | 1980-05-06 | Heat treatment of coal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56157494A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5468865A (en) * | 1977-11-10 | 1979-06-02 | Ube Ind Ltd | Cooling stretcher for extruding section |
-
1980
- 1980-05-06 JP JP5963580A patent/JPS56157494A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5468865A (en) * | 1977-11-10 | 1979-06-02 | Ube Ind Ltd | Cooling stretcher for extruding section |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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