JP6892509B2 - 炭素繊維強化プラスチックの処理方法 - Google Patents
炭素繊維強化プラスチックの処理方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
-
- 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
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Processing Of Solid Wastes (AREA)
Description
炭素繊維強化プラスチックの大きさを一定とし、界面活性剤の量並びに酸溶液のpH及び量を変化させて試験を行うことにより、界面活性剤及び酸溶液が炭素繊維強化プラスチックの燃焼性に与える影響を評価した。
炭素繊維強化プラスチック:廃CFRP(炭素繊維含有率:58質量%)
廃CFRPの試料サイズ:平均粒子径1mm
酸溶液a:pH0.6のHNO3溶液(69%HNO3溶液)
酸溶液b:pH2のHNO3溶液(酸溶液1を希釈して調整)
酸溶液c:pH4のHNO3溶液(酸溶液1を希釈して調整)
酸溶液d:pH6のHNO3溶液(酸溶液1を希釈して調整)
界面活性剤:直鎖アルキルベンゼンスルホン酸ナトリウム、直鎖アルキルベンゼンスルホン酸、及びアルキルエーテル硫酸エステルナトリウム混合物(ライオン株式会社製:ママレモン(商品名))
界面活性剤及び酸溶液の使用方法:以下に示す実施例1〜8及び比較例1、2の10通りの試験水準で試験を行った。
実施例1:界面活性剤及び酸溶液が気化した雰囲気下に炭素繊維強化プラスチックを曝露した条件を想定し、廃CFRPを事前に酸溶液に含侵させることなく、該廃CFRP(100質量部)の周囲に、界面活性剤(0.08質量部)と酸溶液a(12.5質量部)からなる混合液a(酸溶液a100質量部に対し0.64質量部の界面活性剤を添加して得た混合液aの12.58質量部)を滴下して、同時に加熱した。
実施例2:炭素繊維強化プラスチックを、界面活性剤及び酸溶液に含浸した後に燃焼させる条件を想定し、廃CFRPを事前に酸溶液a100質量部に対し0.64質量部の界面活性剤を添加して得た混合液aに含侵させた後、水切りした廃CFRPを加熱した。(加熱時の廃CFRPに付着していた、混合液aは、該廃CFRP100質量部に対し13.5質量部であった。)
実施例3:酸溶液aを酸溶液bに変更した以外、実施例1と同様にした。
実施例4:酸溶液aを酸溶液bに変更した以外、実施例2と同様にした。
実施例5:酸溶液aを酸溶液cに変更した以外、実施例1と同様にした。
実施例6:酸溶液aを酸溶液cに変更した以外、実施例2と同様にした。
実施例7:酸溶液aを酸溶液dに変更した以外、実施例1と同様にした。
実施例8:酸溶液aを酸溶液dに変更した以外、実施例2と同様にした。
比較例1:界面活性剤及び酸溶液を使用することなく、廃CFRPのみを加熱した。
比較例2:酸溶液のみが気化した雰囲気下に炭素繊維強化プラスチックを曝露した条件を想定し、廃CFRPを事前に酸溶液に含侵させることなく、該廃CFRP(100質量部)の周囲に酸溶液a(12.5質量部)を滴下して、同時に加熱した。
次に、炭素繊維強化プラスチックの平均粒子径を変化させた場合の燃焼率の評価を行った。
Claims (6)
- 炭素繊維強化プラスチックを焼却する炭素繊維強化プラスチックの処理方法であって、
前記炭素繊維強化プラスチックと、界面活性剤及びpHが4以下の酸溶液とを接触させた後、該炭素繊維強化プラスチックを固定炭素の燃焼温度域を超える温度で焼却することを特徴とする炭素繊維強化プラスチックの処理方法。 - 請求項1に記載の炭素繊維強化プラスチックの処理方法において、
前記炭素繊維強化プラスチックに前記界面活性剤を接触させ、小径化処理して、これに更に前記酸溶液を接触させた後、該炭素繊維強化プラスチックを固定炭素の燃焼温度域を超える温度で焼却することを特徴とする炭素繊維強化プラスチックの処理方法。 - 請求項1又は請求項2に記載の炭素繊維強化プラスチックの処理方法において、
前記pHが4以下の酸溶液の量は、前記炭素繊維強化プラスチックの量を100質量部としたとき、10質量部以上、且つ、200質量部以下であることを特徴とする炭素繊維強化プラスチックの処理方法。 - 請求項1〜請求項3のいずれか1項に記載の炭素繊維強化プラスチックの処理方法において、
前記界面活性剤の量は、前記pHが4以下の酸溶液の量を100質量部としたとき、0.5質量部以上、且つ、10質量部以下であることを特徴とする炭素繊維強化プラスチックの処理方法。 - 請求項1〜請求項4のいずれか1項に記載の炭素繊維強化プラスチックの処理方法において、
前記炭素繊維強化プラスチックの平均粒子径は、10mm以下であることを特徴とする炭素繊維強化プラスチックの処理方法。 - 請求項1〜請求項5のいずれか1項に記載の炭素繊維強化プラスチックの処理方法において、
前記炭素繊維強化プラスチックと、前記界面活性剤及び前記酸溶液とを接触させた後、該炭素繊維強化プラスチックをセメント製造設備で固定炭素の燃焼温度域を超える温度で焼却することを特徴とする炭素繊維強化プラスチックの処理方法。
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JP4892935B2 (ja) * | 2005-11-08 | 2012-03-07 | 宇部興産株式会社 | 炭素繊維を含む廃プラスチックの処理方法 |
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