JPS6143140A - Method of recovering high-purity terepthalic acid from terephthalic acid-containing waste liquir - Google Patents
Method of recovering high-purity terepthalic acid from terephthalic acid-containing waste liquirInfo
- Publication number
- JPS6143140A JPS6143140A JP59164300A JP16430084A JPS6143140A JP S6143140 A JPS6143140 A JP S6143140A JP 59164300 A JP59164300 A JP 59164300A JP 16430084 A JP16430084 A JP 16430084A JP S6143140 A JPS6143140 A JP S6143140A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- terephthalic acid
- containing waste
- purity
- precipitated
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
ポリエステル糸合成繊維の製造工程中に生じる廃液より
高純度のテレフタル#2回収する方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] This invention relates to a method for recovering highly purified terephthal #2 from waste liquid generated during the manufacturing process of polyester thread synthetic fibers.
テレフタル酸含有廃*V酸性にしてテレフタル*V析出
させ、結晶ゼろ別後乾燥して回収している。Terephthalic acid-containing waste*V is acidified to precipitate terephthalate*V, and the crystals are filtered out and then dried and recovered.
ポリエステル系合成繊維の製造工程中に生じる廃液には
主原料であるテレフタル酸がかなりの緻含まれており、
その回収は製造コスト及び廃液処理上の重要な課題であ
る。The waste liquid generated during the manufacturing process of polyester synthetic fibers contains a considerable amount of terephthalic acid, the main raw material.
Its recovery is an important issue in terms of manufacturing costs and waste liquid treatment.
したしなρ)ら上記廃液中にはテレフタル酸以外に触媒
−?顔料として使用した金属イ万ン、金JIgtII化
物−?有磯高分子化合物等の不純物が訝まれる為実用に
供しつる高純度テレフタル−の@収は容易ではない。In addition to terephthalic acid, is there any catalyst in the waste liquid? Metal ions and gold JIgtII compounds used as pigments? It is not easy to obtain high-purity terephthal for practical use because it is suspected of containing impurities such as Ariiso polymer compounds.
本発明者等はテレフタル醒含有廃液を醗でpHll−6
の弱酸性とし、テレフタル酸のご<−SV析出させ、ろ
過後、ろ液からテレフタル酸を同収(酸性にして結晶な
ろ別)することにより高純度品r得ることを見い出した
。弱酸性で析出するごく一部のテレフタル酸は損失する
ことになるが、上記の不純物はテレフタル酸と共沈して
除去される。更にこの不純智と共沈したテレフタル酸の
ろ別時に活性炭、好ましくはg−ヒドロキシキノリン添
着活性炭ケ匣用すると一層高純曳晶が得られた。The present inventors investigated the pH of the terephthalate-containing waste liquid at pHll-6.
It has been found that a highly pure product can be obtained by making the solution weakly acidic, precipitating terephthalic acid at <-SV, filtering it, and then collecting terephthalic acid from the filtrate (by making it acidic and filtering off the crystals). Although a small portion of the terephthalic acid that precipitates under weak acidity is lost, the above impurities are coprecipitated with the terephthalic acid and removed. Furthermore, when activated carbon, preferably g-hydroxyquinoline-impregnated activated carbon casings, were used to filter out the terephthalic acid co-precipitated with the impure acid, even more pure crystals were obtained.
従来の技術α、h、cと本発明d、all比較すると次
の通りであった。A comparison between the conventional techniques α, h, and c and the present invention d and all was as follows.
以下テレフタル酸wTPAと略記する。Hereinafter, it will be abbreviated as terephthalic acid wTPA.
α、’l’PA廃液 酸性晶析 回収’j
’FA(Jil(分023%)L## 活性炭ろ過
酸性晶析y [分ωθ幻c、# # ざ−
ヒーキシキノリン添看活性炭ろ過 酸性晶析 IN 区
分θ/g%1 、d、Iz弱酸共沈ろ過 #I在晶
析 l l区分のJi)−1111ト雫ドー
〔実施例〕
実施例l
デPAR股5θkgな■lにてj1コ、θとしTPAゼ
析出させる。このちのf&ICろ紙にてろ過し。α, 'l' PA waste liquid acidic crystallization recovery 'j
'FA (Jil (min 023%) L## Activated carbon filtration
Acidic crystallization y [min ωθ phantom c, # # za-
Activated carbon filtration with hexyquinoline Acidic crystallization IN Classification θ/g%1, d, Iz Weak acid coprecipitation filtration TPA enzyme is precipitated with j1 and θ at 5θkg. Then filter with f&IC filter paper.
ろ過後イオン交換水j 00 ’mlにて洗浄後乾燥す
る。After filtration, it is washed with 00'ml of ion-exchanged water and dried.
実施力誌
TPAN液50〜に活性炭/θgを投入し攪拌後、45
(:’ろ紙にてろ過する。このろwlな皮!にて−」、
Oとし’1’PAt’析出させる。以降実施Nlと同様
に操作する。Activated carbon/θg was added to TPAN solution 50~ and stirred, then 45
(:'Filter with filter paper. With this filthy skin!-'',
'1'PAt' is precipitated with O. Thereafter, the operation is performed in the same manner as in implementation Nl.
実施例3、
TPA廃液5θ〜にg−ヒドロキシキノリン添着活性炭
109’を投入し攪拌後、屋SCろ紙にてろ過する。こ
のろ* v Hctにて−L、Oとし’I’PAを析出
させる。以降実施H/、と同様に傑作する。Example 3: g-hydroxyquinoline-impregnated activated carbon 109' is added to TPA waste liquid 5θ~, stirred, and then filtered using YaSC filter paper. In this filter * v Hct, add -L and O to precipitate 'I'PA. From then on, it will be a masterpiece as well as H/.
冥l1liIめ召
’I’FA廃11IS、O〜f klQtにて−Sダと
なしTPAの一部を析出させ、轟5Cろ砒にてろ過する
。A part of -S da and TPA are precipitated at 11IS, O~f klQt, and filtered using a Todoroki 5C filter.
こりろ液を更に[7にて、HユOとしT)’At’析出
させる。以降冥厖圓lと1句様に傑作する。The filtrate was further purified with H in step 7 to precipitate 'At'. Since then, he has written masterpieces such as Meikyuen and Ichiku.
実m例5
TpAs液s、okyw尤1にて一5/となt、TPA
の一部乞析出させ16SCろ紙にてろ過する。以降実施
例ダと同様に操作する。Practical Example 5 TpAs liquid s, OKW 15/t, TPA
A part of the solution is precipitated and filtered through 16SC filter paper. Thereafter, operations are performed in the same manner as in Example DA.
実施例ム
’I’PAjtli液5θhg 1kmtにて声5グと
なしTPAの一部を析出させた後、活性炭1091に’
投入し攪拌後ASCろ紙にてろ過する。以降実施例喫と
同様に操作する。Example Mu'I'PAjtli liquid 5θhg At 1kmt, a part of TPA was precipitated, and then a part of it was deposited on activated carbon 1091.
After stirring, filter through ASC filter paper. Thereafter, the operation is the same as in the example.
実施例7
’I’FA廃液sokgw田jにて一5弘となしTPA
の一部を析出させた後、ざ−ヒドロキシキノリン添宥活
性炭109’に:投入し攪拌後、A!;Cろ紙にてろ過
する。以降実施例ダと同様に慄咋する。Example 7 'I'FA waste liquid sokgw 15hiro and TPA
After precipitating a part of A! ;Filter with C filter paper. Thereafter, the process will be carried out in the same manner as in Example DA.
この機から分るJうに本発明の実施例q〜7で高純度テ
レフタル酸か回収された。High purity terephthalic acid was recovered from this machine in Examples q to 7 of the present invention.
Claims (2)
としてテレフタル酸を一部分、析出させろ過後、ろ液を
酸にて更に酸性とし析出したテレフタル酸をろ過後水洗
して回収する方法。(1) A method in which the terephthalic acid-containing waste liquid is neutralized with an acid, then made weakly acidic to precipitate a portion of the terephthalic acid, filtered, the filtrate further acidified with an acid, and the precipitated terephthalic acid is recovered by filtration and washing with water.
としてテレフタル酸を一部分析出させ活性炭、好ましく
は8−ヒドロキシキノリン添着活性炭でろ過後、ろ液を
酸にて更に酸性とし析出したテレフタル酸をろ過後水洗
して回収する方法。(2) After neutralizing the terephthalic acid-containing waste liquid with an acid, the terephthalic acid was partially analyzed by making it weakly acidic, and after filtering with activated carbon, preferably activated carbon impregnated with 8-hydroxyquinoline, the filtrate was further acidified with an acid and precipitated terephthalic acid. A method of recovering acid by filtering it and washing it with water.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59164300A JPS6143140A (en) | 1984-08-07 | 1984-08-07 | Method of recovering high-purity terepthalic acid from terephthalic acid-containing waste liquir |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59164300A JPS6143140A (en) | 1984-08-07 | 1984-08-07 | Method of recovering high-purity terepthalic acid from terephthalic acid-containing waste liquir |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6143140A true JPS6143140A (en) | 1986-03-01 |
JPH0425938B2 JPH0425938B2 (en) | 1992-05-06 |
Family
ID=15790496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59164300A Granted JPS6143140A (en) | 1984-08-07 | 1984-08-07 | Method of recovering high-purity terepthalic acid from terephthalic acid-containing waste liquir |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6143140A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62277340A (en) * | 1986-05-26 | 1987-12-02 | Mitsubishi Rayon Co Ltd | Method for recovering phthalic acid |
CN102583813A (en) * | 2012-01-12 | 2012-07-18 | 江苏爱特恩高分子材料有限公司 | Recovery method for terephthalic acid in alkali deweighting wastewater as well as production method and application of terephthalic acid metal salt whisker |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6143139A (en) * | 1984-08-03 | 1986-03-01 | Mitsubishi Chem Ind Ltd | Method of recovering terephthalic acid |
-
1984
- 1984-08-07 JP JP59164300A patent/JPS6143140A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6143139A (en) * | 1984-08-03 | 1986-03-01 | Mitsubishi Chem Ind Ltd | Method of recovering terephthalic acid |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62277340A (en) * | 1986-05-26 | 1987-12-02 | Mitsubishi Rayon Co Ltd | Method for recovering phthalic acid |
CN102583813A (en) * | 2012-01-12 | 2012-07-18 | 江苏爱特恩高分子材料有限公司 | Recovery method for terephthalic acid in alkali deweighting wastewater as well as production method and application of terephthalic acid metal salt whisker |
Also Published As
Publication number | Publication date |
---|---|
JPH0425938B2 (en) | 1992-05-06 |
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