JPS57141487A - Preparation of raw pitch for needle coke - Google Patents
Preparation of raw pitch for needle cokeInfo
- Publication number
- JPS57141487A JPS57141487A JP2549681A JP2549681A JPS57141487A JP S57141487 A JPS57141487 A JP S57141487A JP 2549681 A JP2549681 A JP 2549681A JP 2549681 A JP2549681 A JP 2549681A JP S57141487 A JPS57141487 A JP S57141487A
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- pitch
- light oil
- free carbon
- coal tar
- 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
- Inorganic Fibers (AREA)
- Coke Industry (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
PURPOSE: To prepare the titled pitch with a simple device requiring no filter, by mixing an aromatic tar light oil or middle oil solvent with coal tar pitch to precipitate free carbon by gravity and then separating the light oil matter before removing the solvent from it.
CONSTITUTION: A coal tar light oil or middle oil solvent is added to coal tar pitch to be mixed together and then the mixture is left to stand at 150W360°C under a pressure sufficient to maintain the solvent at a liquid state. The light oil portion of the pitch containing no free carbon is separated from the heavy oil portion of the pitch containing free carbon precipitated by gravity, and then the solvent is removed from the light oil portion to prepare the raw pitch for needle coke. This process requires no filtration, so that the process makes it possible to carry out continuous operation, makes the device simple and compact and also enables easy, recovery of the solvent.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2549681A JPS57141487A (en) | 1981-02-25 | 1981-02-25 | Preparation of raw pitch for needle coke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2549681A JPS57141487A (en) | 1981-02-25 | 1981-02-25 | Preparation of raw pitch for needle coke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57141487A true JPS57141487A (en) | 1982-09-01 |
Family
ID=12167665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2549681A Pending JPS57141487A (en) | 1981-02-25 | 1981-02-25 | Preparation of raw pitch for needle coke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57141487A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61162586A (en) * | 1985-01-08 | 1986-07-23 | Kawasaki Steel Corp | Production of precursor pitch for carbon fiber |
| JPS61163989A (en) * | 1985-01-16 | 1986-07-24 | Kawasaki Steel Corp | Separating insoluble matter contained in coal tar |
| US4832820A (en) * | 1986-06-09 | 1989-05-23 | Conoco Inc. | Pressure settling of mesophase |
| CN104099117A (en) * | 2014-06-19 | 2014-10-15 | 中钢集团鞍山热能研究院有限公司 | Method for preparing various carbon materials by using low-temperature carbonized coal tar pitch |
-
1981
- 1981-02-25 JP JP2549681A patent/JPS57141487A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61162586A (en) * | 1985-01-08 | 1986-07-23 | Kawasaki Steel Corp | Production of precursor pitch for carbon fiber |
| JPS61163989A (en) * | 1985-01-16 | 1986-07-24 | Kawasaki Steel Corp | Separating insoluble matter contained in coal tar |
| JPH041792B2 (en) * | 1985-01-16 | 1992-01-14 | Kawasaki Steel Co | |
| US4832820A (en) * | 1986-06-09 | 1989-05-23 | Conoco Inc. | Pressure settling of mesophase |
| CN104099117A (en) * | 2014-06-19 | 2014-10-15 | 中钢集团鞍山热能研究院有限公司 | Method for preparing various carbon materials by using low-temperature carbonized coal tar pitch |
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