JPS57162793A - Thermal dehydrating method of low-grade coal - Google Patents
Thermal dehydrating method of low-grade coalInfo
- Publication number
- JPS57162793A JPS57162793A JP4887981A JP4887981A JPS57162793A JP S57162793 A JPS57162793 A JP S57162793A JP 4887981 A JP4887981 A JP 4887981A JP 4887981 A JP4887981 A JP 4887981A JP S57162793 A JPS57162793 A JP S57162793A
- Authority
- JP
- Japan
- Prior art keywords
- low
- preheating
- grade coal
- coal
- steam
- 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
- Coke Industry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
PURPOSE: To reduce the cost of cooling equipment and dehydrate low-grade coal, by preheating the low-grade coal with steam stepwise in a pressure vessel, heating the coal under high pressure, and reducing the pressure stepwise, separating the water in the liquid state, transferring the moisture, etc. to another vessel, and using the moisture, etc. as a heat source.
CONSTITUTION: A crushed and classified clow-grade coal is transferred by a raw coal feed conveyor 12 fed to plural pressure vessels (1a) and (1b), and steam is fed through steam lines 3, (3a) and (3b) to heat the coal under high pressure. The respective pressure vessels are heated to the first preheating, second preheating and the n-th preheating one after another to separate the contained moisture in the low-grade coal in the form of a liquid. The evaporated water after the process of the first, second and the n-th evacuation and the completion of the n-th evacuation is sucked from a gas discharge line 7 through a steam ejector 14 and fed through a steam line 13 to another vessel and used as a preheating source and carry out the dehydration of the low-grade coal efficiently.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4887981A JPS57162793A (en) | 1981-03-31 | 1981-03-31 | Thermal dehydrating method of low-grade coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4887981A JPS57162793A (en) | 1981-03-31 | 1981-03-31 | Thermal dehydrating method of low-grade coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57162793A true JPS57162793A (en) | 1982-10-06 |
Family
ID=12815567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4887981A Pending JPS57162793A (en) | 1981-03-31 | 1981-03-31 | Thermal dehydrating method of low-grade coal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57162793A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072613A (en) * | 2011-01-20 | 2011-05-25 | 徐斌 | Method for multi-effect evaporation and dehydration of solid material |
-
1981
- 1981-03-31 JP JP4887981A patent/JPS57162793A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072613A (en) * | 2011-01-20 | 2011-05-25 | 徐斌 | Method for multi-effect evaporation and dehydration of solid material |
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