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
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000002699 waste material Substances 0.000 title claims abstract description 15
- 239000002253 acid Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 10
- 230000002378 acidificating effect Effects 0.000 claims abstract description 9
- 239000000706 filtrate Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000005725 8-Hydroxyquinoline Substances 0.000 claims abstract 2
- 230000003472 neutralizing effect Effects 0.000 claims abstract 2
- 229960003540 oxyquinoline Drugs 0.000 claims abstract 2
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims 2
- 229920000728 polyester Polymers 0.000 abstract description 4
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 3
- 230000001376 precipitating effect Effects 0.000 abstract description 3
- 239000012209 synthetic fiber Substances 0.000 abstract description 3
- 229920002994 synthetic fiber Polymers 0.000 abstract description 3
- 239000000047 product Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 239000000126 substance Substances 0.000 abstract 2
- 239000013078 crystal Substances 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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 (3)
| 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 of terephthalic acid in alkali reduction wastewater and production method and application of terephthalic acid metal salt whiskers |
| JP2023505894A (en) * | 2019-12-13 | 2023-02-13 | レンチング アクチエンゲゼルシャフト | Method for recovering starting materials from blended textile waste |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143139A (en) * | 1984-08-03 | 1986-03-01 | Mitsubishi Chem Ind Ltd | Recovery method of 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 | Recovery method of terephthalic acid |
Cited By (3)
| 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 of terephthalic acid in alkali reduction wastewater and production method and application of terephthalic acid metal salt whiskers |
| JP2023505894A (en) * | 2019-12-13 | 2023-02-13 | レンチング アクチエンゲゼルシャフト | Method for recovering starting materials from blended textile waste |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0425938B2 (en) | 1992-05-06 |
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