JP5453135B2 - Pet熱分解用高反応性生石灰およびその製造方法 - Google Patents
Pet熱分解用高反応性生石灰およびその製造方法 Download PDFInfo
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- JP5453135B2 JP5453135B2 JP2010039999A JP2010039999A JP5453135B2 JP 5453135 B2 JP5453135 B2 JP 5453135B2 JP 2010039999 A JP2010039999 A JP 2010039999A JP 2010039999 A JP2010039999 A JP 2010039999A JP 5453135 B2 JP5453135 B2 JP 5453135B2
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- Prior art keywords
- pet
- highly reactive
- thermal decomposition
- quick lime
- quicklime
- Prior art date
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- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 title claims description 101
- 235000012255 calcium oxide Nutrition 0.000 title claims description 52
- 239000000292 calcium oxide Substances 0.000 title claims description 51
- 238000005979 thermal decomposition reaction Methods 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 60
- 238000000197 pyrolysis Methods 0.000 claims description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 14
- 235000019738 Limestone Nutrition 0.000 claims description 14
- 239000006028 limestone Substances 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 14
- 239000002245 particle Substances 0.000 claims description 13
- 239000003054 catalyst Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 3
- 238000000691 measurement method Methods 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 24
- 239000005020 polyethylene terephthalate Substances 0.000 description 24
- 238000011084 recovery Methods 0.000 description 15
- -1 Polyethylene terephthalate Polymers 0.000 description 7
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 238000000769 gas chromatography-flame ionisation detection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 240000006909 Tilia x europaea Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002290 gas chromatography-mass spectrometry Methods 0.000 description 1
- 238000001165 gas chromatography-thermal conductivity detection Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000002699 waste material Substances 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
- 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)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
Description
BET比表面積が4〜10m2/g、
細孔容積が0.02〜0.1cm3/g、
細孔径が30〜100nm、
塩酸活性度(50g法3min値)が400〜446ml
の範囲内であることに特徴を有するものである。
結晶質からなる結晶の大きさが1mm以上の石灰石を粉砕し、粒子径を75μmアンダー、ブレーン空気透過装置による粉末度測定法により測定した比表面積を3000〜6000cm2/gに調整した粉末石灰石を造粒成形して造粒石灰石を調製し、前記造粒石灰石を2時間で900〜1050℃まで昇温させ、次いで、2〜4時間焼成し、そして、2時間かけて常温まで降下させることに特徴を有するものである。
BET比表面積、細孔容積、細孔径および塩酸活性度が表1に示すような値の硬焼生石灰、市販生石灰(関東薬品)および本発明生石灰を用意した。本発明生石灰は、この発明の製造方法に従って、結晶質石灰石を粉砕し、粒子径を75μmアンダー、ブレーン比表面積を4000cm2/gに調整した粉末石灰石を、縦30mm・横25mm・高さ16mmに造粒成形し、この造粒石灰石を1000℃で2時間、焼成することにより製造した。そして、それぞれの生石灰の粒子径を38μmに調整した。そして、各生石灰を、PETを熱分解炉に装入して、ベンゼンを選択的に生成させる際のPET熱分解用触媒として使用し、そのときの残渣率およびベンゼン回収率を測定した。この結果を表2に示す。
次に、本発明生石灰を粉砕し、粒度を0.05mmアンダー、0.3〜1mm、1〜3mmおよび3〜5mmに調整し、このように粒度調整した各生石灰をPET熱分解用触媒として使用した。そして、それぞれについて、残渣率およびベンゼン回収率を測定した。この結果を表3に示す。
粒度が0.3〜1mmの本発明生石灰の熱分解炉への充填量(層厚)を1.5cm、3cmおよび6cmに変え、それぞれについて、残渣率およびベンゼン回収率を測定した。この結果を表4に示す。
Claims (4)
- PETを熱分解炉に装入して、ベンゼンを選択的に生成させる際に触媒として使用するPET熱分解用高反応性生石灰において、
BET比表面積が4〜10m2/g、
細孔容積が0.02〜0.1cm3/g、
細孔径が30〜100nm、
塩酸活性度(50g法3min値)が400〜446ml
の範囲内であることを特徴とするPET熱分解用高反応性生石灰。 - 前記生石灰の粒度が0.1〜10mmであることを特徴とする、請求項1に記載のPET熱分解用高反応性生石灰。
- PETを熱分解炉に装入して、ベンゼンを選択的に生成させる際に触媒として使用するPET熱分解用高反応性生石灰の製造方法において、
結晶質からなる結晶の大きさが1mm以上の石灰石を粉砕し、粒子径を75μmアンダー、ブレーン空気透過装置による粉末度測定法により測定した比表面積を3000〜6000cm2/gに調整した粉末石灰石を造粒成形して造粒石灰石を調製し、前記造粒石灰石を2時間で900〜1050℃まで昇温させ、次いで、2〜4時間焼成し、そして、2時間かけて常温まで降下させることを特徴とする、PET熱分解用高反応性生石灰の製造方法。 - 前記生石灰の粒度を0.1〜10mmの範囲内としたことを特徴とする、請求項3に記載の、PET熱分解用高反応性生石灰の製造方法。
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Publications (2)
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JP2011173078A JP2011173078A (ja) | 2011-09-08 |
JP5453135B2 true JP5453135B2 (ja) | 2014-03-26 |
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EP3363852A1 (en) * | 2017-02-20 | 2018-08-22 | Swerea IVF AB | Polyester textile waste recycling |
CN112805321B (zh) * | 2018-08-17 | 2023-09-01 | 宜家供应股份公司 | 聚酯纺织品废料回收利用 |
Family Cites Families (3)
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JP4565223B2 (ja) * | 2003-02-28 | 2010-10-20 | 株式会社東北テクノアーチ | 芳香族炭化水素の製造法 |
BRPI0411272A (pt) * | 2003-06-05 | 2006-08-01 | Okutama Kogyo Co Ltd | carbonato de cálcio precipitado, método para produzir o mesmo e carga para carregar o papel utilizando o mesmo |
JP5334248B2 (ja) * | 2007-01-25 | 2013-11-06 | 国立大学法人山口大学 | 油脂を原料とする脂肪酸アルキルエステルの製造方法 |
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