JPS56152702A - Purification method of crystalline component - Google Patents
Purification method of crystalline componentInfo
- Publication number
- JPS56152702A JPS56152702A JP5436881A JP5436881A JPS56152702A JP S56152702 A JPS56152702 A JP S56152702A JP 5436881 A JP5436881 A JP 5436881A JP 5436881 A JP5436881 A JP 5436881A JP S56152702 A JPS56152702 A JP S56152702A
- Authority
- JP
- Japan
- Prior art keywords
- tower
- cooling
- temperature
- mother liquor
- discharge pipe
- 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: To reduce a plant scale per unit throughput, by rotating an agitator made by fixing many agitating rods on a rotary shaft installed communicatively from the top to the bottom of a vertical tower in order to produce a temperature gradient in the tower.
CONSTITUTION: Cooling means 3 is installed on the part of a purification tower higher than the feed pipe 2 of a raw material to adjust a temperature to that suitable for crystallization of the crystallizable component in the material fed. This cooling means 3 is properly selected in accordance with crystallization temperature, and the generally adopted means are indirect cooling by a cooling medium, a method of leading out part of the mother liquor to an external cooler and circulating it, etc. Discharge pipe 5 for taking-out the mother liquor at the uppermost level is provided at the upper part of the tower, and heating means 4 is installed in the lower part of the tower. Discharge pipe 6 is provided on the bottom of the tower to take out the purified crystal molten in the crystal melting zone.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56054368A JPS5846322B2 (en) | 1981-04-13 | 1981-04-13 | Method for purifying crystalline components |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56054368A JPS5846322B2 (en) | 1981-04-13 | 1981-04-13 | Method for purifying crystalline components |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1910774A Division JPS5518521B2 (en) | 1974-02-19 | 1974-02-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56152702A true JPS56152702A (en) | 1981-11-26 |
JPS5846322B2 JPS5846322B2 (en) | 1983-10-15 |
Family
ID=12968708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56054368A Expired JPS5846322B2 (en) | 1981-04-13 | 1981-04-13 | Method for purifying crystalline components |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5846322B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0380901A (en) * | 1989-08-25 | 1991-04-05 | Tsukishima Kikai Co Ltd | Method and apparatus for refining crystal |
JP2001031673A (en) * | 1999-07-15 | 2001-02-06 | Nippon Steel Chem Co Ltd | Production of benzothiophene |
WO2001014037A1 (en) * | 1999-08-25 | 2001-03-01 | Kansai Chemical Engineering Co., Ltd. | Crystallization apparatus and crystallization method |
US6211404B1 (en) | 1996-09-30 | 2001-04-03 | Nippon Steel Chemical Co., Ltd. | Method of refining benzoic acid |
US6403828B1 (en) | 1997-07-29 | 2002-06-11 | Nippon Steel Chemical Co., Ltd. | Method of refining crystalline material |
US6664433B1 (en) | 1999-04-28 | 2003-12-16 | Nippon Steel Chemical Co., Ltd. | Process for the purification of aromatic hydrocarbons and process for the preparation of high-purity aromatic hydrocarbons |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB125798A (en) * | 1918-05-23 | 1919-05-01 | Alexander Walter Nesbitt | Improved Method of Packeting a Series of Tickets or the like of Different Colours or Denomination, and Apparatus therefor. |
-
1981
- 1981-04-13 JP JP56054368A patent/JPS5846322B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB125798A (en) * | 1918-05-23 | 1919-05-01 | Alexander Walter Nesbitt | Improved Method of Packeting a Series of Tickets or the like of Different Colours or Denomination, and Apparatus therefor. |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0380901A (en) * | 1989-08-25 | 1991-04-05 | Tsukishima Kikai Co Ltd | Method and apparatus for refining crystal |
US6211404B1 (en) | 1996-09-30 | 2001-04-03 | Nippon Steel Chemical Co., Ltd. | Method of refining benzoic acid |
US6403828B1 (en) | 1997-07-29 | 2002-06-11 | Nippon Steel Chemical Co., Ltd. | Method of refining crystalline material |
US6664433B1 (en) | 1999-04-28 | 2003-12-16 | Nippon Steel Chemical Co., Ltd. | Process for the purification of aromatic hydrocarbons and process for the preparation of high-purity aromatic hydrocarbons |
JP2001031673A (en) * | 1999-07-15 | 2001-02-06 | Nippon Steel Chem Co Ltd | Production of benzothiophene |
JP4566302B2 (en) * | 1999-07-15 | 2010-10-20 | 新日鐵化学株式会社 | Method for producing benzothiophene |
WO2001014037A1 (en) * | 1999-08-25 | 2001-03-01 | Kansai Chemical Engineering Co., Ltd. | Crystallization apparatus and crystallization method |
US6458332B2 (en) | 1999-08-25 | 2002-10-01 | Kansai Chemical Engineering Co., Ltd. | Crystallization apparatus and crystallization method |
AU765524B2 (en) * | 1999-08-25 | 2003-09-18 | Kansai Chemical Engineering Co., Ltd. | Crystallization apparatus and crystallization method |
Also Published As
Publication number | Publication date |
---|---|
JPS5846322B2 (en) | 1983-10-15 |
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