JPS5441854A - Production of naphthalene - Google Patents
Production of naphthaleneInfo
- Publication number
- JPS5441854A JPS5441854A JP9493077A JP9493077A JPS5441854A JP S5441854 A JPS5441854 A JP S5441854A JP 9493077 A JP9493077 A JP 9493077A JP 9493077 A JP9493077 A JP 9493077A JP S5441854 A JPS5441854 A JP S5441854A
- Authority
- JP
- Japan
- Prior art keywords
- naphthalene
- fraction
- distillation column
- forerun
- preheater
- 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
Abstract
PURPOSE: Naphthalene oil is distilled under normal pressure in the forerun distilling column and the pressure distillation of the bottom is conducted by the use of the naphthalene distillation column wherein the heat of the top fraction is exchanged with the bottom fraction of the forerun distillation column followed by cooling, thereby producing 95% naphthalene.
CONSTITUTION: Naphthalene oil is heated to 180W220°C by passing through first preheater 4 and second perheater 4 and distilled under atmospheric pressure in the forerun distillation column. The light fraction is removed from the top and the bottom is heated with reboiler 8 and recycled to forerun distillation column 6. A part of the bottom fraction is fed into naphthalene distillation column 21 and distilled under pressurized conditions of 1W5kg/cm2, at 260W285°C on the top of the column. The top fraction is cut at the refluxing part and a side and taken out through lines 30 and 31 for using as heat source for second preheater 4. After cooled in the second preheater the top fraction becomes 95% naphthalene. A part of the bottom fraction heats naphthalene oil in first preheater 3 and is collected as heavy oil.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9493077A JPS5441854A (en) | 1977-08-10 | 1977-08-10 | Production of naphthalene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9493077A JPS5441854A (en) | 1977-08-10 | 1977-08-10 | Production of naphthalene |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5441854A true JPS5441854A (en) | 1979-04-03 |
JPS5610893B2 JPS5610893B2 (en) | 1981-03-11 |
Family
ID=14123676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9493077A Granted JPS5441854A (en) | 1977-08-10 | 1977-08-10 | Production of naphthalene |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5441854A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59178723U (en) * | 1983-05-18 | 1984-11-29 | クラリオン株式会社 | Axis rotation knob |
JPS6151523U (en) * | 1984-09-06 | 1986-04-07 | ||
JPS629823U (en) * | 1985-07-03 | 1987-01-21 | ||
JPH0248901Y2 (en) * | 1986-09-09 | 1990-12-21 |
-
1977
- 1977-08-10 JP JP9493077A patent/JPS5441854A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5610893B2 (en) | 1981-03-11 |
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