JP2694601B2 - Utilization method of terephthalic acid in alkaline effluent drainage of polyester fabric - Google Patents
Utilization method of terephthalic acid in alkaline effluent drainage of polyester fabricInfo
- Publication number
- JP2694601B2 JP2694601B2 JP11751394A JP11751394A JP2694601B2 JP 2694601 B2 JP2694601 B2 JP 2694601B2 JP 11751394 A JP11751394 A JP 11751394A JP 11751394 A JP11751394 A JP 11751394A JP 2694601 B2 JP2694601 B2 JP 2694601B2
- Authority
- JP
- Japan
- Prior art keywords
- terephthalic acid
- polyester fabric
- utilization method
- alkaline effluent
- effluent drainage
- 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.)
- Expired - Fee Related
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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Ceramic Products (AREA)
- Carbon And Carbon Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、染色加工におけるポリ
エステル織物のアルカリ減量加工工程中で生ずるポリエ
ステル分解物のテレフタル酸の利用方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for utilizing terephthalic acid, which is a polyester decomposition product produced in an alkaline weight reduction process of polyester fabric in a dyeing process.
【０００２】[0002]
【従来の技術】ポリエステル織物に絹の風合いを与える
ために、濃厚アルカリ溶液でポリエステル繊維の表面を
溶かすアルカリ減量加工と称する加工法が行われてい
る。この処理でポリエステル繊維の重量で約２０％が減
量し、その分解物であるテレフタル酸やエチレングリコ
ールなどが加工排液の中に溶け込んでいる。現在、染色
加工工場では酸を加えてテレフタル酸を析出、分離し埋
立や焼却している。ＰＥＴボトルやフィルムなどのポリ
エステル樹脂廃棄物についての再資源化の技術はいくつ
かみられるが（例えば、特開平０３−５６４４６号参
照）、この減量加工排液中のテレフタル酸の有効な利用
方法はいまだみられない。2. Description of the Related Art In order to impart a silky feel to a polyester woven fabric, a processing method called alkali weight loss processing is used in which the surface of the polyester fiber is dissolved in a concentrated alkaline solution. By this treatment, the weight of the polyester fiber is reduced by about 20%, and its decomposed products, such as terephthalic acid and ethylene glycol, are dissolved in the processing effluent. Currently, dye processing plants add acid to precipitate and separate terephthalic acid for landfilling or incineration. There are some technologies for recycling polyester resin wastes such as PET bottles and films (see, for example, Japanese Patent Laid-Open No. 03-56446), but an effective use method of terephthalic acid in the weight-reduced processing effluent is still available. I can't see it.
【０００３】[0003]
【課題を解決するための手段】本発明者等はこの廃テレ
フタル酸を、吸着剤や燃料に応用できる炭素材料として
利用する方法を発明した。The present inventors have invented a method of utilizing this waste terephthalic acid as a carbon material applicable to an adsorbent and a fuel.
【０００４】[0004]
【作用】テレフタル酸は他の多くの低分子有機物と異な
り融点を持たないため、熱処理で溶融せずにそのままの
形状で炭素化できる。カルシウムなどの金属塩とした場
合にはテレフタル酸単独での昇華性も抑えられ、炭素化
物として固定するのにさらに有利になる。そこで本発明
の手順を述べると、まず、減量加工排液中の不溶物を除
いた後、塩酸を加えて水素イオン濃度指数（ｐＨ）を７
〜１２に調整する。次に塩化カルシウムの水溶液を添加
し、テレフタル酸をカルシウム塩として析出させる。こ
れをろ過し乾燥する。このテレフタル酸のカルシウム塩
を粉体のまま、又は塊状に成形したものを加熱炭化す
る。それぞれ粉末状および塊状の炭素化物が得られる。[Function] Since terephthalic acid does not have a melting point unlike many other low molecular weight organic substances, it can be carbonized in its original shape without being melted by heat treatment. When a metal salt such as calcium is used, the sublimability of terephthalic acid alone is also suppressed, which is more advantageous for fixing as a carbonized product. Therefore, the procedure of the present invention will be described. First, after removing the insoluble matter in the weight reduction processing effluent, hydrochloric acid is added to adjust the hydrogen ion concentration index (pH) to 7
Adjust to ~ 12. Next, an aqueous solution of calcium chloride is added to precipitate terephthalic acid as a calcium salt. It is filtered and dried. The calcium salt of terephthalic acid is powdered as it is or is formed into a lump and is carbonized by heating. Powdery and lumpy carbonized products are obtained, respectively.
【０００５】[0005]
【実施例】テレフタル酸１０ｇが溶解している水酸化ナ
トリウム溶液に塩酸を加えてｐＨ１０附近までに調整す
る。次に塩化カルシウム１３ｇを含む溶液を添加する。
生じたテレフタル酸カルシウムの沈殿をろ過する。乾燥
後１６ｇのテレフタル酸のカルシウム塩が得られる。こ
れを粉末のままおよび直径３ｃｍ円盤状に加圧成形した
ものを、環状電気炉で窒素ガスを流しながら６００℃で
３時間熱処理を行う。冷却後、粉末状および円盤状の炭
素化物が得られる。[Example] To a sodium hydroxide solution in which 10 g of terephthalic acid is dissolved, hydrochloric acid is added to adjust the pH to around 10. Then a solution containing 13 g of calcium chloride is added.
The resulting precipitate of calcium terephthalate is filtered. After drying 16 g of calcium salt of terephthalic acid are obtained. This powder as it is and pressure-molded into a disk shape having a diameter of 3 cm is heat-treated at 600 ° C. for 3 hours while flowing nitrogen gas in an annular electric furnace. After cooling, powdery and disk-shaped carbonized products are obtained.
【０００６】[0006]
【発明の効果】本発明は次の効果をもたらす。The present invention brings the following effects.
【０００７】ポリエステル織物のアルカリ減量加工排液
中のポリエステル繊維の分解物であるテレフタル酸を粉
末状や任意の形状の炭素材料として利用することがで
き、燃料物としての用途が広がる。[0007] Terrephthalic acid, which is a decomposition product of polyester fiber in the alkaline reduction processing drainage of polyester fabric, can be used as a carbon material in powder form or in any shape, and its application as a fuel product is widened.
【０００８】吸着剤としての応用（例えば、染色排水の
脱色）が期待される。Application as an adsorbent (for example, decolorization of dyeing wastewater) is expected.
Claims (1)
液中のテレフタル酸をカルシウム塩として分離し、これ
を炭化し炭素材料として利用する方法。1. A method of separating terephthalic acid in a wastewater of alkaline reduction processing of polyester fabric as a calcium salt, and carbonizing this to use as a carbon material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11751394A JP2694601B2 (en) | 1994-05-06 | 1994-05-06 | Utilization method of terephthalic acid in alkaline effluent drainage of polyester fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11751394A JP2694601B2 (en) | 1994-05-06 | 1994-05-06 | Utilization method of terephthalic acid in alkaline effluent drainage of polyester fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08133717A JPH08133717A (en) | 1996-05-28 |
| JP2694601B2 true JP2694601B2 (en) | 1997-12-24 |
Family
ID=14713628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11751394A Expired - Fee Related JP2694601B2 (en) | 1994-05-06 | 1994-05-06 | Utilization method of terephthalic acid in alkaline effluent drainage of polyester fabric |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2694601B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006016270A (en) * | 2004-07-02 | 2006-01-19 | National Institute Of Advanced Industrial & Technology | Basic metal compound-carrying carbon and its production method |
| JP6327053B2 (en) * | 2013-09-13 | 2018-05-23 | 株式会社豊田中央研究所 | Porous carbon, production method thereof, and ammonia adsorbent |
| KR20170097137A (en) * | 2015-03-05 | 2017-08-25 | 가부시키가이샤 캬타라 | Carbon porous body, production method thereof, ammonia adsorbent material, canister, and production method thereof |
| JP6730001B2 (en) * | 2015-03-12 | 2020-07-29 | 株式会社豊田中央研究所 | Adsorbent molding |
-
1994
- 1994-05-06 JP JP11751394A patent/JP2694601B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08133717A (en) | 1996-05-28 |
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