JPS57190094A - Modification of low-quality coal - Google Patents
Modification of low-quality coalInfo
- Publication number
- JPS57190094A JPS57190094A JP7409481A JP7409481A JPS57190094A JP S57190094 A JPS57190094 A JP S57190094A JP 7409481 A JP7409481 A JP 7409481A JP 7409481 A JP7409481 A JP 7409481A JP S57190094 A JPS57190094 A JP S57190094A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- solvent
- low
- slurry
- quality coal
- 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 modify low-quality coal to such a degree that it is suitable as a coke raw material for iron manufacture, by making low-quality coal which is previously ground, with high wxygen content into a slurry using tar oil as a solvent, decomposing thermally and extracting it under specific conditions so that the coal is partially converted into a solvent-soluble component.
CONSTITUTION: After low-quality coal with high oxygen content is ground, it is made into a slurry having a wieght ratio of solvent/coal of ≥2 using a tar oil having a bolling point of 200W400°C as a solvent. The slurry is thermally decomposed and extracted in an atmosphere of an inert gas at 10W50kg/cm2 at 380W 430°C, the low-quality coal is partially converted into a solvent-soluble component, an undissolved residue is not separated or separated partially, the prepared substance is subjested to vacuum distillation, and the solvent is recovered, to give modified coal or caking coal.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7409481A JPS57190094A (en) | 1981-05-19 | 1981-05-19 | Modification of low-quality coal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7409481A JPS57190094A (en) | 1981-05-19 | 1981-05-19 | Modification of low-quality coal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57190094A true JPS57190094A (en) | 1982-11-22 |
Family
ID=13537249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7409481A Pending JPS57190094A (en) | 1981-05-19 | 1981-05-19 | Modification of low-quality coal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57190094A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013076071A (en) * | 2011-09-16 | 2013-04-25 | Nippon Steel & Sumitomo Metal Corp | Method for upgrading object to be upgraded, methods for producing coke and sintered ore, and method for operating blast furnace |
-
1981
- 1981-05-19 JP JP7409481A patent/JPS57190094A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013076071A (en) * | 2011-09-16 | 2013-04-25 | Nippon Steel & Sumitomo Metal Corp | Method for upgrading object to be upgraded, methods for producing coke and sintered ore, and method for operating blast furnace |
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