JP3667165B2 - Industrial solid fuel and method for producing the same - Google Patents
Industrial solid fuel and method for producing the same Download PDFInfo
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- JP3667165B2 JP3667165B2 JP22752599A JP22752599A JP3667165B2 JP 3667165 B2 JP3667165 B2 JP 3667165B2 JP 22752599 A JP22752599 A JP 22752599A JP 22752599 A JP22752599 A JP 22752599A JP 3667165 B2 JP3667165 B2 JP 3667165B2
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- waste
- solid fuel
- fiber reinforced
- reinforced resin
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- 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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- 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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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、工業用固形燃料及びその製造方法に関するものである。更に詳しく述べるならば、本発明は、廃繊維強化樹脂物品から製造され、強化繊維の露出がなく、又は少なく、従って、環境を汚染することのない工業用固形燃料、特にセメント製造用固形燃料、及びその製造方法に関するものである。
【０００２】
【従来の技術】
廃繊維強化樹脂物品は、従来その再生再利用が困難であるため、埋立てなどに用いられているのみであったが、これを適当な粒径に破砕してセメント焼成用固形燃料として利用するという試みがなされた。（特開平６−８２４７号公報）。しかしながら、廃繊維強化樹脂物品の破砕粒体には、その破砕断面から強化繊維が突出して破断しやすく、破断した微細繊維が飛散して作業環境を汚染するという問題がある。
【０００３】
一般にセメント焼成設備において、廃繊維強化樹脂物品の破砕又は粉砕設備が設置されておらずそこで、この廃繊維強化樹脂物品の破砕又は粉砕装置を新らたに設置する場合、この装置を、セメント焼成設備の近くに設置しようとしても設置スペース得ることが困難であるという実際上の問題点がある。このため、廃繊維強化樹脂物品の破砕装置は、セメント焼成装置から離れた場所に設置される。この場合の破砕粒体を、空気輸送管などを通して、密閉状態でセメント焼成装置まで輸送するには輸送距離が長いため、輸送設備の設置及び輸送運転費などにおいて、技術的、経済的困難がある。
【０００４】
このため、廃繊維強化樹脂物品の破砕物を、その破砕装置から、セメント焼成装置の燃料用ホッパー迄ダンプトラックなどを用いて輸送されている。この場合、ダンプトラックにおける廃繊維強化樹脂物品の破砕物の積込み、積み下ろし作業、並びにセメント焼成装置の燃料ホッパーへの投入作業などの取扱いにおいて、破砕断面に突出している樹脂強化用繊維が破断し、微細繊維を空中に飛散させ作業環境を悪化するという問題がある。
【０００５】
この問題を解決又は軽減するために、廃繊維強化樹脂破砕物に散水し、破断繊維の飛散を防止する試みがなされたが、その結果、破砕物が水を含み、従って、その燃費効果が著しく低下するため、この試みの実用化には問題がある。
さらに上記問題の解決のために、作業場所に局所集塵装置を設置するという試みもなされたが、作業環境の改善効果が少なく、その実用化は困難であった。
【０００６】
【発明が解決しようとする課題】
本発明は、廃繊維強化樹脂物品の破砕粒体を固形燃料として利用する場合、この破砕粒体から強化用繊維が破断飛散することがなく、又は少ない工業用固形燃料、及びその製造方法を提供しようとするものである。
【０００７】
【課題を解決するための手段】
上記課題は、本発明の工業用固形燃料及びその製造方法によって解決される。
本発明の工業用固形燃料は、廃繊維強化樹脂物品の破砕粒体を芯とし、その表面上に、廃熱可塑性樹脂から形成された被覆層が固着している複合固形粒体からなることを特徴とするものである。
本発明の工業用固形燃料において、前記廃熱可塑性樹脂粒体の含有量が、前記廃繊維強化樹脂粒体の重量の５〜５０％であることが好ましい。
本発明の工業用固形燃料において、前記複合固形粒体が、５〜５０mmの粒径と、１０〜５０mmの長さを有することが好ましい。
本発明の工業用固形燃料はセメント製造用固形燃料であることが好ましい。
本発明の廃繊維強化樹脂物品から工業用固形燃料を製造する方法は、廃繊維強化樹脂物品の破砕粒体と、廃熱可塑性樹脂物品の破砕粒体とを混合し、この混合物を溶融造粒工程に供して、前記廃繊維強化樹脂粒体の表面に、前記廃熱可塑性樹脂により形成された被覆層が固着している複合固形粒体を形成することを特徴とするものである。
本発明の方法において、前記廃繊維強化樹脂粒体が、５〜３０mmの粒径を有することが好ましい。
本発明の方法において、前記溶融造粒工程において、少なくとも廃熱可塑性樹脂粒体が加熱溶融して、前記廃繊維強化樹脂粒体の表面に付着することが好ましい。
【０００８】
【発明の実施の形態】
本発明に用いられる廃繊維強化樹脂物品は、それが可燃性である限り、繊維の種類、形状、寸法及び樹脂の種類、形状寸法に格別の限定はなく、例えば、ガラス繊維、カーボン繊維、又は高強度有機合成繊維（アラミドなど）により強化された熱可塑性樹脂材料、及び熱硬化性樹脂材料、からなる物品を包含する。廃繊維強化樹脂物品を、例えば粗破砕工程、１次破砕工程、及び２次破砕工程などを経て、粒径が５〜３０mmの粒体に破砕する。
【０００９】
本発明に用いられる廃熱可塑性樹脂物品は、その種類、形状、寸法などに格別の制限はなく、例えば、ポリエチレン、ポリプロピレン、ポリエステル、ポリアミド、ポリカーボネートなどのいずれであってもよいが、加熱溶融の際に分解して毒性ガスを発生するもの、は好ましくなく、また、廃熱可塑性樹脂物品の融点は、８０〜１８０℃であることが好ましく、また、その融点は、それとともに用いられる廃繊維強化樹脂物品の樹脂の融点よりも低いことが好ましく、少なくとも２０℃低いことがより好ましい。廃熱可塑性樹脂物品は、例えば、粗破砕工程、２次破砕工程を経て所望粒径、例えば５〜３０mmの粒径を有する粒体に破砕される。
【００１０】
廃繊維強化樹脂破砕粒体と、熱可塑性樹脂粒体とを混合する。このとき、両者の配合比に格別の限定はないが、熱可塑性樹脂粒体の配合量が、廃繊維強化樹脂破砕粒体の重量の５〜５０重量％にコントロールされることが好ましく、１０〜３０重量％であることがより好ましい。
【００１１】
上記混合物を溶融造粒機に送入し、これを加熱し、少なくとも熱可塑性樹脂粒体を溶融する。廃繊維強化樹脂粒体は、強化繊維を含むため、樹脂が融点以上の温度に加熱されても、粒体自身はその形状を著るしく変化しにくゝ、粒体形状を維持しているから、その表面に、熱可塑性樹脂粒体が付着し、溶融して、その表面を被覆して、複合粒体を形成し、廃繊維強化樹脂粒体の破断面から突出している樹脂強化用繊維は複合粒体内に封じ込められ、従ってその破断飛散を防止抑制することができる。
【００１２】
本発明の固形燃料の製造に用いられる溶融造粒機には、本発明の固形燃料粒体を製造し得るものである限り、その種類、タイプなどに制限はなく、例えば、スクリュー押出し式プラスチック固化装置などを用いることができる。
スクリュー押出し式プラスチック固化装置による溶融造粒工程においては、廃繊維強化樹脂粒体は、溶融した廃熱可塑性樹脂により被覆され、かつ連結されつつ所定の直径をもって押し出され、所定の長さに切断される。このようにして得られたペレット状複合粒体において、その周面は、溶融固化した熱可塑性樹脂からなる被覆層により形成されており、またその切断面は、鋭利な切断刃により形成されているため、樹脂強化繊維が切断面に露出していたとしても、それが切断面から突出することはなく、ペレット状複合粒体内に保持されているから、この繊維が破断飛散することはない。
【００１３】
本発明の固形燃料の形状、寸法などに制限はないが、例えば、粒径：５〜５０mm、好ましくは１０〜２０mm、長さ１０〜５０mm、好ましくは２０〜４０mm、のペレット状粒体を用いることができる。
本発明の工業用固形燃料の粒体は、溶融造粒工程を経ているため、その寸法、形状が、ほゞそろっており、このため、その見掛け嵩量が小さくなる。従って、本発明の工業用固形燃料を、その製造場所から、燃焼場所へのダンプトラック等により輸送する場合、トラック１台当りの積載量が増大し、輸送効率が向上する。
【００１４】
【実施例】
本発明を下記実施例によりさらに説明する。
本実施例により使用された原材料は下記の通りである。
１．廃繊維強化樹脂材料
樹脂：不飽和ポリエステル
強化繊維：ガラス繊維
強化繊維含有量：全重量に対し３０重量％
２．廃熱可塑性樹脂材料
樹脂：ポリエチレン
【００１５】
前記廃繊維強化樹脂材料を、２軸せん断破砕機を用いて、粒径１００〜３００mmに粗破砕し、さらに１軸せん断破砕機を用いて、粒径５〜１０mmに２次破砕した。さらに前記廃熱可塑性樹脂材料を、２軸せん断破砕機を用いて粒径１００〜３００mmに粗破砕し、さらに１軸せん断破砕機を用いて粒径５〜１０mmに２次破砕した。
前記両破砕粒体を、重量比８０：２０で混合しつゝ、溶融造粒機（スクリュー押出し式プラスチック固化装置）に供給し、１００〜１２０℃に加熱し、内径１５mmの押出しノズルより押出し、長さ３０mmに切断した。
得られた粒体には、強化繊維の突出は認められず、その輸送中に、強化繊維の破断飛散は認められなかった。この粒体を、セメント焼成装置において、固形燃料として使用したところ、正常の焼成作業を行うことができた。
【００１６】
【発明の効果】
本発明の工業用固形燃料は、廃繊維強化樹脂物品から製造されたものであるが、強化繊維の表面突出がなく、従ってその破断飛散による作業環境の汚染がなく、また、造粒工程を経ているため、嵩が小さく、輸送効率を高めることができ、セメント焼成などの工業用固形燃料として有効に実用することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an industrial solid fuel and a method for producing the same. More particularly, the present invention relates to an industrial solid fuel, particularly a cement-producing solid fuel, produced from waste fiber reinforced resin articles, which has no or low exposure of reinforcing fibers and thus does not pollute the environment. And a manufacturing method thereof.
[0002]
[Prior art]
Waste fiber reinforced resin articles have been used only for landfills because it is difficult to recycle and reuse them, but they are crushed to an appropriate particle size and used as solid fuel for cement firing. An attempt was made. (Japanese Patent Laid-Open No. 6-8247). However, the crushed particles of the waste fiber reinforced resin article have a problem that the reinforcing fibers protrude from the crushed cross section and are easily broken, and the broken fine fibers are scattered to contaminate the working environment.
[0003]
Generally, in a cement firing facility, a waste fiber reinforced resin article crushing or crushing facility is not installed. Therefore, when this waste fiber reinforced resin article crushing or crushing device is newly installed, this device is used for cement firing. There is a practical problem that it is difficult to obtain an installation space even if it is installed near the equipment. For this reason, the crushing apparatus of waste fiber reinforced resin articles is installed in a place away from the cement baking apparatus. In this case, since the transport distance is long for transporting the crushed particles through a pneumatic transport pipe or the like to the cement firing device in a sealed state, there are technical and economic difficulties in installation of transport facilities and transport operation costs. .
[0004]
For this reason, the crushed material of waste fiber reinforced resin articles is transported from the crushing device to the fuel hopper of the cement firing device using a dump truck or the like. In this case, in the handling such as loading of the crushed waste fiber reinforced resin article in the dump truck, loading and unloading work, and the operation of charging the cement calcination apparatus into the fuel hopper, the resin reinforcing fiber protruding in the crushing section is broken, There is a problem that the working environment is deteriorated by scattering fine fibers in the air.
[0005]
In order to solve or alleviate this problem, attempts have been made to sprinkle waste fiber reinforced resin crushed material to prevent scattering of broken fibers. As a result, the crushed material contains water, and thus its fuel efficiency is remarkably increased. Because of this, there is a problem in putting this trial into practical use.
Furthermore, in order to solve the above problem, an attempt was made to install a local dust collector at the work place, but the effect of improving the work environment was small, and its practical application was difficult.
[0006]
[Problems to be solved by the invention]
The present invention provides an industrial solid fuel that does not break or scatter the reinforcing fibers from the crushed particles when the crushed particles of the waste fiber reinforced resin article is used as a solid fuel, and a method for producing the same. It is something to try.
[0007]
[Means for Solving the Problems]
The above problems are solved by the industrial solid fuel of the present invention and the method for producing the same.
The industrial solid fuel of the present invention is composed of a composite solid particle having a crushed particle of a waste fiber reinforced resin article as a core and a coating layer formed of a waste thermoplastic resin fixed on the surface thereof. It is a feature.
In the industrial solid fuel of the present invention, the content of the waste thermoplastic resin particles is preferably 5 to 50% of the weight of the waste fiber reinforced resin particles.
In the industrial solid fuel of the present invention, it is preferable that the composite solid particles have a particle size of 5 to 50 mm and a length of 10 to 50 mm.
The industrial solid fuel of the present invention is preferably a solid fuel for cement production.
The method for producing an industrial solid fuel from the waste fiber reinforced resin article of the present invention comprises mixing the crushed granule of the waste fiber reinforced resin article and the crushed granule of the waste thermoplastic resin article, and melt granulating the mixture. In the step, a composite solid particle having a coating layer formed of the waste thermoplastic resin is formed on the surface of the waste fiber reinforced resin particle.
In the method of the present invention, the waste fiber reinforced resin particles preferably have a particle size of 5 to 30 mm.
In the method of the present invention, it is preferable that at least the waste thermoplastic resin particles are heated and melted and adhered to the surface of the waste fiber reinforced resin particles in the melt granulation step.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
As long as the waste fiber reinforced resin article used in the present invention is flammable, there is no particular limitation on the fiber type, shape, dimensions and resin type, shape dimensions, for example, glass fiber, carbon fiber, or The article includes a thermoplastic resin material reinforced with high-strength organic synthetic fibers (such as aramid) and a thermosetting resin material. The waste fiber reinforced resin article is crushed into granules having a particle diameter of 5 to 30 mm through, for example, a rough crushing process, a primary crushing process, and a secondary crushing process.
[0009]
The waste thermoplastic resin article used in the present invention is not particularly limited in its type, shape, dimensions, etc., and may be any of polyethylene, polypropylene, polyester, polyamide, polycarbonate, etc. Those that decompose and generate toxic gas are not preferred, and the melting point of the waste thermoplastic resin article is preferably 80 to 180 ° C., and the melting point is reinforced with the waste fiber used therewith. It is preferably lower than the melting point of the resin of the resin article, more preferably at least 20 ° C lower. The waste thermoplastic resin article is crushed into granules having a desired particle diameter, for example, 5 to 30 mm, through a coarse crushing process and a secondary crushing process, for example.
[0010]
Waste fiber reinforced resin crushed granules and thermoplastic resin granules are mixed. At this time, there is no particular limitation on the blending ratio of both, but the blending amount of the thermoplastic resin particles is preferably controlled to 5 to 50% by weight of the weight of the waste fiber reinforced resin crushed particles, More preferably, it is 30% by weight.
[0011]
The mixture is fed into a melt granulator and heated to melt at least the thermoplastic resin particles. Since the waste fiber reinforced resin particles contain reinforcing fibers, even if the resin is heated to a temperature higher than the melting point, the particles themselves hardly change their shape and maintain the particle shape. Therefore, the thermoplastic resin particles adhere to the surface, melt, cover the surface, form composite particles, and protrude from the fracture surface of the waste fiber reinforced resin particles Is confined in the composite grain, and therefore, it is possible to prevent and suppress its breakage and scattering.
[0012]
The melt granulator used for the production of the solid fuel of the present invention is not limited in its type and type as long as the solid fuel granule of the present invention can be produced, for example, screw extrusion plastic solidification A device or the like can be used.
In the melt granulation process by the screw extrusion type plastic solidifying device, the waste fiber reinforced resin granules are covered with the molten waste thermoplastic resin, extruded with a predetermined diameter while being connected, and cut into a predetermined length. The In the thus obtained pellet-shaped composite particles, the peripheral surface is formed by a coating layer made of a melted and solidified thermoplastic resin, and the cut surface is formed by a sharp cutting blade. Therefore, even if the resin reinforced fiber is exposed on the cut surface, it does not protrude from the cut surface and is held in the pellet-shaped composite granule, so that the fiber is not broken and scattered.
[0013]
Although there is no restriction | limiting in the shape, dimension, etc. of the solid fuel of this invention, For example, the particle size: 5-50 mm, Preferably it is 10-20 mm, Length 10-50 mm, Preferably it is 20-40 mm, and uses the pellet-form granule. be able to.
Since the particles of the industrial solid fuel of the present invention have undergone the melt granulation step, the size and shape are almost the same, and the apparent bulk becomes small. Therefore, when the industrial solid fuel of the present invention is transported from the production site to the combustion site by a dump truck or the like, the load amount per truck is increased and the transportation efficiency is improved.
[0014]
【Example】
The invention is further illustrated by the following examples.
The raw materials used in this example are as follows.
1. Waste fiber reinforced resin material Resin: Unsaturated polyester reinforced fiber: Glass fiber reinforced fiber Content: 30% by weight based on the total weight
2. Waste thermoplastic resin material: Polyethylene
The waste fiber reinforced resin material was coarsely crushed to a particle size of 100 to 300 mm using a biaxial shear crusher, and further secondary crushed to a particle size of 5 to 10 mm using a uniaxial shear crusher. Further, the waste thermoplastic resin material was roughly crushed to a particle size of 100 to 300 mm using a biaxial shear crusher, and further secondary crushed to a particle size of 5 to 10 mm using a uniaxial shear crusher.
The both crushed particles are mixed at a weight ratio of 80:20, supplied to a melt granulator (screw extrusion type plastic solidifying device), heated to 100 to 120 ° C., and extruded from an extrusion nozzle having an inner diameter of 15 mm. Cut to a length of 30 mm.
In the obtained granule, no protrusion of the reinforcing fiber was observed, and no breakage and scattering of the reinforcing fiber was observed during the transportation. When this granule was used as a solid fuel in a cement firing apparatus, a normal firing operation could be performed.
[0016]
【The invention's effect】
The industrial solid fuel of the present invention is produced from a waste fiber reinforced resin article, but there is no surface protrusion of the reinforcing fiber, and therefore, there is no contamination of the working environment due to breakage and scattering, and a granulation process is performed. Therefore, the bulk is small, the transportation efficiency can be increased, and it can be effectively put to practical use as an industrial solid fuel such as cement firing.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| JP22752599A JP3667165B2 (en) | 1999-08-11 | 1999-08-11 | Industrial solid fuel and method for producing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22752599A JP3667165B2 (en) | 1999-08-11 | 1999-08-11 | Industrial solid fuel and method for producing the same |
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| Publication Number | Publication Date |
|---|---|
| JP2001049273A JP2001049273A (en) | 2001-02-20 |
| JP3667165B2 true JP3667165B2 (en) | 2005-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP22752599A Expired - Fee Related JP3667165B2 (en) | 1999-08-11 | 1999-08-11 | Industrial solid fuel and method for producing the same |
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| JP (1) | JP3667165B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018168198A1 (en) | 2017-03-15 | 2018-09-20 | 東芝メモリ株式会社 | Semiconductor storage device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6619272B2 (en) * | 2016-03-23 | 2019-12-11 | 太平洋セメント株式会社 | Processing method and processing apparatus for waste carbon fiber reinforced plastic |
| KR101705579B1 (en) * | 2016-06-07 | 2017-02-13 | 김선석 | Manufacturing method for solid fuel using waste fiber |
| JP6288573B2 (en) * | 2016-07-26 | 2018-03-07 | 住友大阪セメント株式会社 | Inorganic fiber molding |
| JP6376482B2 (en) * | 2016-07-28 | 2018-08-22 | 住友大阪セメント株式会社 | Inorganic fiber particulate aggregate |
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1999
- 1999-08-11 JP JP22752599A patent/JP3667165B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018168198A1 (en) | 2017-03-15 | 2018-09-20 | 東芝メモリ株式会社 | Semiconductor storage device |
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| JP2001049273A (en) | 2001-02-20 |
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