JPS56152702A - Purification method of crystalline component - Google Patents

Purification method of crystalline component

Info

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
Application number
JP5436881A
Other languages
Japanese (ja)
Other versions
JPS5846322B2 (en
Inventor
Kiyoshi Sakuma
Takanori Takefuji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Chemical and Materials Co Ltd
Original Assignee
Nippon Steel Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Steel Chemical Co Ltd filed Critical Nippon Steel Chemical Co Ltd
Priority to JP56054368A priority Critical patent/JPS5846322B2/en
Publication of JPS56152702A publication Critical patent/JPS56152702A/en
Publication of JPS5846322B2 publication Critical patent/JPS5846322B2/en
Expired legal-status Critical Current

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
JP56054368A 1981-04-13 1981-04-13 Method for purifying crystalline components Expired JPS5846322B2 (en)

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)

* Cited by examiner, † Cited by third party
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 Method for producing 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)

* Cited by examiner, † Cited by third party
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.

Patent Citations (1)

* Cited by examiner, † Cited by third party
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 (8)

* Cited by examiner, † Cited by third party
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 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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