JPS53137926A - Treatment of residue of distillation of phthalic anhydride - Google Patents

Treatment of residue of distillation of phthalic anhydride

Info

Publication number
JPS53137926A
JPS53137926A JP5122777A JP5122777A JPS53137926A JP S53137926 A JPS53137926 A JP S53137926A JP 5122777 A JP5122777 A JP 5122777A JP 5122777 A JP5122777 A JP 5122777A JP S53137926 A JPS53137926 A JP S53137926A
Authority
JP
Japan
Prior art keywords
phthalic anhydride
residue
distillation
treatment
naphthalene
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
JP5122777A
Other languages
Japanese (ja)
Other versions
JPS5845435B2 (en
Inventor
Kanji Kamichika
Susumu Takemoto
Nobuyuki Kido
Motoaki Shiiba
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 JP52051227A priority Critical patent/JPS5845435B2/en
Publication of JPS53137926A publication Critical patent/JPS53137926A/en
Publication of JPS5845435B2 publication Critical patent/JPS5845435B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To recover the residual phthalic anhydride from the distillation residue of crude phthalic anhydride which is obtained by the catalytic air oxidation of naphthalene, by separating thereof as a residue, using a thin film evaporator.
COPYRIGHT: (C)1978,JPO&Japio
JP52051227A 1977-05-06 1977-05-06 Processing method for phthalic anhydride distillation residue Expired JPS5845435B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52051227A JPS5845435B2 (en) 1977-05-06 1977-05-06 Processing method for phthalic anhydride distillation residue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52051227A JPS5845435B2 (en) 1977-05-06 1977-05-06 Processing method for phthalic anhydride distillation residue

Publications (2)

Publication Number Publication Date
JPS53137926A true JPS53137926A (en) 1978-12-01
JPS5845435B2 JPS5845435B2 (en) 1983-10-08

Family

ID=12881052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52051227A Expired JPS5845435B2 (en) 1977-05-06 1977-05-06 Processing method for phthalic anhydride distillation residue

Country Status (1)

Country Link
JP (1) JPS5845435B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003507447A (en) * 1999-08-20 2003-02-25 ビーエーエスエフ アクチェンゲゼルシャフト A method for producing phthalic anhydride that meets specifications

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380896A (en) * 1965-05-04 1968-04-30 Metallgesellschaft Ag High purification of phthalic anhydride by multi-stage reduced pressure distillation
JPS5029526A (en) * 1973-04-05 1975-03-25

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380896A (en) * 1965-05-04 1968-04-30 Metallgesellschaft Ag High purification of phthalic anhydride by multi-stage reduced pressure distillation
JPS5029526A (en) * 1973-04-05 1975-03-25

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003507447A (en) * 1999-08-20 2003-02-25 ビーエーエスエフ アクチェンゲゼルシャフト A method for producing phthalic anhydride that meets specifications
JP4791666B2 (en) * 1999-08-20 2011-10-12 ビーエーエスエフ ソシエタス・ヨーロピア A method to produce phthalic anhydride that meets standards

Also Published As

Publication number Publication date
JPS5845435B2 (en) 1983-10-08

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