JP2011153282A - Method of manufacturing solidified fuel by recycling - Google Patents

Method of manufacturing solidified fuel by recycling Download PDF

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JP2011153282A
JP2011153282A JP2010031782A JP2010031782A JP2011153282A JP 2011153282 A JP2011153282 A JP 2011153282A JP 2010031782 A JP2010031782 A JP 2010031782A JP 2010031782 A JP2010031782 A JP 2010031782A JP 2011153282 A JP2011153282 A JP 2011153282A
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solidified
waste
solidified fuel
sludge
producing
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Hideo Kawashima
英雄 川島
Hirobumi Kumagai
博文 熊谷
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REBRAN KK
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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
    • Y02E50/10—Biofuels, e.g. bio-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
    • 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
    • Y02W30/78—Recycling of wood or furniture waste

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  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recycled solidified fuel excellent in economical property, prepared through a simple manufacturing method with less environmental burden by using recyclable materials as a binder for various organic wastes. <P>SOLUTION: There is provided a method of manufacturing solidified fuels by adding, as a binder, an aqueous-based emulsion or coagulated and precipitated latex-based sludge which is solidified when dried with strong cohesive force to organic wastes formed of a single material or a mixture of two or more materials selected from waste plastics, food wastes, wood wastes and various organic wastes and mixing and kneading the resulting mixture, followed by molding. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、廃棄物のみを使用した燃料であって、固形化のためのバインダーとして有機物である凝集沈殿汚泥を使用することにより、常温で１００％リサイクルの固形化燃料を製造する方法を提供するものである。  The present invention provides a method for producing a solidified fuel that is 100% recycled at room temperature by using coagulated sediment sludge, which is a fuel using only waste and is an organic substance as a binder for solidification. Is.

従来から、リサイクル燃料として廃プラスチックや木質系材料等を使用したＲＰＦや、各種ごみを使用したＲＤＦと称されるリサイクルによる固形化燃料が使用されている。しかしながらこれらの燃料は、プラスチックを溶融することにより固形化するものであることから、ある程度の高温での製造が前提であり、使用できるプラスチックの種類も限定される。  Conventionally, RPF using waste plastic or wood-based material or the like as recycled fuel and solidified fuel by recycling called RDF using various wastes have been used. However, since these fuels are solidified by melting plastic, they are premised on production at a certain high temperature, and the types of plastics that can be used are also limited.

さらに、現在使用されている固形化燃料を製造するためには、大規模な設備と熱処理等で多大のエネルギー消費を伴う。また、それにより大量の二酸化炭素等が排出される。  Furthermore, in order to produce a solid fuel that is currently used, a large amount of energy is consumed due to large-scale facilities and heat treatment. In addition, a large amount of carbon dioxide and the like are thereby discharged.

一方、水系エマルジョン又はラテックス含有水溶液を製造又は使用する工場において発生する凝集沈殿汚泥は、現在すべて産業廃棄物として処理されている。その処理方法は埋め立て、焼却が主である。埋め立ては場所の確保、焼却はエネルギー消費と焼却後の残渣の処理など多くの問題を含んでいる。  On the other hand, all coagulated sediment sludge generated in a factory that manufactures or uses aqueous emulsions or latex-containing aqueous solutions is currently treated as industrial waste. The treatment method is mainly landfill and incineration. Landfilling has a lot of problems such as securing space, and incineration involves energy consumption and disposal of post-incineration residues.

本発明は、上記の問題点を解決する方法であり、リサイクル材料を有効に使用し、製造段階において環境負荷のできるだけ少ない、且つできるだけ簡便な方法で製造できる非常に経済性に優れたリサイクル固形化燃料の製造方法を提案するものである。  The present invention is a method for solving the above-mentioned problems. Recycling and solidification that is highly economical and can be manufactured by using a recycled material effectively and in a manufacturing stage with as little environmental impact as possible and as simple as possible. A method for producing a fuel is proposed.

すなわち請求項１記載の発明は、各種有機系廃棄物に水系エマルジョン又はラテックス含有水溶液を凝集沈殿処理した時に発生する凝集沈殿汚泥をバインダーとして添加し、混合混練後、常温で成型して固形化することを特徴とするリサイクル固形化燃料の製造方法である。  In other words, the invention according to claim 1 adds agglomerated sediment sludge generated when a water-based emulsion or latex-containing aqueous solution is agglomerated and precipitated to various organic wastes as a binder, and after mixing and kneading, it is molded and solidified at room temperature. This is a method for producing a recycled solidified fuel.

請求項２記載の発明は、前記有機系廃棄物が廃プラスチック、食品系廃棄物、木質系廃棄物及び各種有機系ごみから選ばれる単独又は２種類以上の混合物であることを特徴とする請求項１記載の固形化燃料の製造方法である。  The invention according to claim 2 is characterized in that the organic waste is a single or a mixture of two or more selected from waste plastic, food waste, wood waste and various organic wastes. 1. A method for producing a solidified fuel according to 1.

請求項３記載の発明は、前記汚泥が水系エマルジョン又はラテックス含有水溶液を凝集沈殿処理した時に発生するバインダー特性を有する汚泥であり、製造段階での乾燥の問題より脱水処理により含水率２０〜８０％に調整したものであることを特徴とする請求項１記載の固形化燃料の製造方法である。  The invention according to claim 3 is a sludge having a binder property that is generated when the sludge coagulates and precipitates an aqueous emulsion or latex-containing aqueous solution, and has a water content of 20 to 80% by dehydration due to a problem of drying in the production stage. The method for producing a solidified fuel according to claim 1, wherein the method is adjusted to the above.

請求項４記載の発明は、前記有機系廃棄物を全重量中３０〜９５％含有することを特徴とする請求項１記載の固形化燃料の製造方法である。  A fourth aspect of the present invention is the method for producing a solidified fuel according to the first aspect, wherein the organic waste is contained in an amount of 30 to 95% in the total weight.

請求項５記載の発明は、前記脱水処理された汚泥を全重量中５〜７０％含有することを特徴とする請求項１記載の固形化燃料の製造方法である。  The invention according to claim 5 is the method for producing a solidified fuel according to claim 1, characterized in that the dewatered sludge is contained in an amount of 5 to 70% in the total weight.

請求項６記載の発明は、請求項１乃至５に記載の配合物を混合混練し、成型した後、養生することにより、その使用用途に応じて各種形状の固化成型体とすることを特徴とする固形化燃料の製造方法である。  The invention according to claim 6 is characterized in that the compound according to claims 1 to 5 is mixed and kneaded, molded, and then cured to form a solidified molded body of various shapes according to the intended use. This is a method for producing a solidified fuel.

本発明の発端は、水系エマルジョン又はラテックス含有水溶液の凝集沈殿汚泥が、バインダー特性を有すること、及び汚泥単独で自然乾燥したものが非常に強い凝集力を有して固化することを見出したことにある。且つ凝集後の固化物が、水に全く溶解しないことも確認された。さらに、ｐＨが６．０〜８．０と中性領域であり、乾燥後の固化成型体が非常に良好な耐アルカリ、耐酸性を有することも確認した。
本発明は、このようなエマルジョン及びラテックス含有水溶液の凝集沈殿汚泥の持つ特異な性能、及びこれらの凝集沈殿汚泥の成分が大部分熱可塑性樹脂であり、非常に熱量の高い成分であることを利用することにより、常温での固形化燃料を製造することを可能とした。これにより、製造段階での環境負荷の低減及び環境保全の面で多くの貢献が期待できる。The inventor of the present invention has found that agglomerated sedimentation sludge of an aqueous emulsion or latex-containing aqueous solution has binder characteristics, and that naturally dried sludge alone solidifies with a very strong agglomeration force. is there. It was also confirmed that the solidified product after aggregation did not dissolve in water at all. Furthermore, it was confirmed that the pH was 6.0 to 8.0 and a neutral region, and the solidified molded body after drying had very good alkali resistance and acid resistance.
The present invention utilizes the unique performance of such an emulsion and latex-containing aqueous solution of coagulated sediment sludge, and the fact that the components of these coagulated sediment sludge are mostly thermoplastic resins and are very high heat components. By doing so, it was possible to produce a solidified fuel at room temperature. As a result, many contributions can be expected in terms of reducing environmental burdens and protecting the environment at the manufacturing stage.

まず、本発明におけるポイントである凝集沈殿汚泥について説明する。エマルジョン及びラテックスは様々な分野で使用されている。用途は接着剤、粘着剤、塗料、コーティング剤等である。その種類は非常に多く、酢酸ビニルエマルジョン、酢酸ビニル共重合エマルジョン、アクリルエマルジョン、アクリル共重合エマルジョン、ウレタンエマルジョン、エポキシエマルジョン、ＳＢＲラテックス、ＮＢＲラテックス、ＭＢＲラテックスなどがある。これらのエマルジョンやラテックスの製造並びに使用工程においては、製造並びに使用工程で使用した反応釜、各種保存容器、配管、塗布等の装置を洗浄した排水が発生する。これらの排水は当然そのまま流すことはできない。  First, agglomerated sedimentation sludge which is a point in the present invention will be described. Emulsions and latex are used in various fields. Applications include adhesives, pressure-sensitive adhesives, paints, and coating agents. There are many types, such as vinyl acetate emulsion, vinyl acetate copolymer emulsion, acrylic emulsion, acrylic copolymer emulsion, urethane emulsion, epoxy emulsion, SBR latex, NBR latex, and MBR latex. In the production and use process of these emulsions and latexes, waste water is generated by washing devices such as reaction kettles, various storage containers, piping, and coating used in the production and use processes. Of course, these wastewater cannot be drained as they are.

前記の排水は、必ず工場内の一定の処理槽に集められてから凝集沈殿処理をおこなう。凝集沈殿処理の方法については各種の方法があるが、一例を挙げれば、塩化第二鉄や硫酸バンドなどを適量添加してｐＨを酸性領域に調製する。次に苛性ソーダ、消石灰などでｐＨ調整（６．０〜８．０）する。必要に応じて各種高分子凝集剤を添加してフロックを形成させる。  The waste water is always collected in a certain processing tank in the factory before the coagulation sedimentation treatment is performed. There are various methods for the coagulation-precipitation treatment. For example, an appropriate amount of ferric chloride or a sulfuric acid band is added to adjust the pH in the acidic region. Next, the pH is adjusted (6.0 to 8.0) with caustic soda, slaked lime or the like. If necessary, various polymer flocculants are added to form flocs.

上澄み液を取り除いた後、上記フロック状沈殿物を真空脱水機等に導入して脱水処理をおこなう。この脱水処理後の成分は、一例を挙げればアクリル樹脂１２、アクリル系共重合樹脂５、ＳＢＲ５、その他２、水分７６（重量％）となっている。  After removing the supernatant, the floc-like precipitate is introduced into a vacuum dehydrator or the like for dehydration. The components after the dehydration treatment are, for example, acrylic resin 12, acrylic copolymer resin 5, SBR5, other 2, moisture 76 (% by weight).

この汚泥を、含水率２０〜８０％、より好ましくは４０〜６０％になるまで脱水調整する。含水率が２０％未満の場合、混合する原料との混合が不均一になりやすく、固化強度が低下する。８０％を超えるとベトベトで、取り扱いが容易でなくなると同時に固化するまでの時間が長くなる。  The sludge is dewatered until the water content is 20 to 80%, more preferably 40 to 60%. When the moisture content is less than 20%, the mixing with the raw materials to be mixed tends to be uneven, and the solidification strength is lowered. If it exceeds 80%, it becomes sticky and handling becomes difficult and at the same time the time until solidification becomes longer.

有機系廃棄物としては、プラスチック系では各種廃プラスチック、合成樹脂クズ、繊維系では合成繊維クズ、天然繊維クズ、木質系では木屑、木粉、食品系ではコーヒーかす、茶殻、紙質系では紙くず、ダンボールクズなどがあり、これらを単独又は併用使用する。  As organic waste, various plastics for plastics, synthetic resin waste, fiber waste for synthetic fiber, natural fiber waste, wood waste for wood waste, wood flour, food waste for coffee grounds, tea shells, paper waste for waste paper, There are cardboard scraps, and these are used alone or in combination.

以上、本発明の一つの特徴は、使用する材料がすべて産業廃棄物を使用しても可能なことである。  As described above, one feature of the present invention is that all materials used can be used even if industrial waste is used.

次に、原料の配合比率について述べる。バインダーとしての汚泥の配合比率が５重量％未満の場合、混合する原料との混合が不均一になりやすく、且つバインダー効果も低いことから強度が低下する。７０重量％を超えると配合品の含水率が高くなり、固化するまでの時間が長くなる。したがって、凝集沈殿汚泥の配合比率は、５〜７０重量％が適切な範囲となる。中でも３０〜５０重量％が乾燥及び強度から最適な範囲である。  Next, the mixing ratio of raw materials will be described. When the blending ratio of sludge as a binder is less than 5% by weight, the mixing with the raw materials to be mixed tends to be non-uniform, and the binder effect is low, so the strength is lowered. If it exceeds 70% by weight, the moisture content of the blended product becomes high and the time until solidification becomes long. Therefore, 5 to 70% by weight is an appropriate range for the blending ratio of the coagulated sediment sludge. Among these, 30 to 50% by weight is the optimum range from drying and strength.

次に、この発明の混練り工程について説明する。まず、各種有機系廃棄物に、凝集沈殿汚泥を添加して十分攪拌して混練りする。  Next, the kneading process of the present invention will be described. First, agglomerated sedimentation sludge is added to various organic wastes and kneaded with sufficient stirring.

十分に混練りされた混合物は、そのまま型に流し込んで常温で乾燥する方法や常圧で押出機に導入して成型してもよい。また、プレス等で所定の成型体としてもよい。  The sufficiently kneaded mixture may be poured into a mold as it is and dried at room temperature, or may be introduced into an extruder at normal pressure and molded. Moreover, it is good also as a predetermined molded object with a press etc. FIG.

その後、成型体を常温で自然乾燥して固化する。乾燥時間を短縮したい場合は、風を利用して乾燥するか、４０〜８０℃程度の温度をかけて加温乾燥させてもよい。  Thereafter, the molded body is naturally dried and solidified at room temperature. When it is desired to shorten the drying time, the drying may be performed using wind or may be heated and dried by applying a temperature of about 40 to 80 ° C.

乾燥後、固化体は固体燃料として使用する。
以下本発明について実施例、比較例を挙げて詳しく説明する。After drying, the solidified product is used as a solid fuel.
Hereinafter, the present invention will be described in detail with reference to examples and comparative examples.

この実施例は、コーヒーかすに凝集沈殿汚泥をバインダーとして添加し、固形化燃料として使用したものである。  In this example, coagulated sediment sludge was added as a binder to coffee grounds and used as a solidified fuel.

コーヒーかす８０ｋｇに、接着剤メーカーより排出されたエマルジョンの凝集沈殿汚泥５０ｋｇを添加混練りして配合物を得た。この配合物を小型常圧押出し成型機に通して、縦１０ｍｍ、横２０ｍｍ、長さ１００ｍｍの成型体を得た。この試験体を室温で７日乾燥後、熱量測定を実施した結果は、４５８８ｋｃａｌ／ｋｇであった。本実施例で使用したエマルジョンの凝集沈殿汚泥の成分を表１で示した。  A blend was obtained by adding and kneading 50 kg of the coagulated sediment sludge of the emulsion discharged from the adhesive maker to 80 kg of the coffee grounds. This blend was passed through a small atmospheric pressure extrusion molding machine to obtain a molded body having a length of 10 mm, a width of 20 mm, and a length of 100 mm. After the test body was dried at room temperature for 7 days, the calorimetric measurement result was 4588 kcal / kg. The components of the coagulated sediment sludge of the emulsion used in this example are shown in Table 1.

Figure 2011153282
Figure 2011153282

この実施例は、木粉に凝集沈殿汚泥をバインダーとして添加し、固形化燃料として使用したものである。  In this embodiment, coagulated sediment sludge is added to wood powder as a binder and used as a solidified fuel.

粒度２ｍｍ以下に調整した木粉６０ｋｇに、接着剤メーカーより排出されたエマルジョンの凝集沈殿汚泥４０ｋｇを添加混練りして配合物を得た。この配合物を小型常圧押出し成型機に通して、縦１０ｍｍ、横２０ｍｍ、長さ１００ｍｍの成型体を得た。この試験体を室温で７日乾燥後、熱量測定を実施した結果は、５２０５ｋｃａｌ／ｋｇであった。なお、本実施例で使用したエマルジョンの凝集沈殿汚泥の成分を表２で示した。  To 60 kg of wood flour adjusted to a particle size of 2 mm or less, 40 kg of the coagulated sediment sludge of the emulsion discharged from the adhesive manufacturer was added and kneaded to obtain a blend. This blend was passed through a small atmospheric pressure extrusion molding machine to obtain a molded body having a length of 10 mm, a width of 20 mm, and a length of 100 mm. After the test body was dried at room temperature for 7 days, the calorimetric measurement result was 5205 kcal / kg. In addition, Table 2 shows components of the coagulation sedimentation sludge of the emulsion used in this example.

Figure 2011153282
Figure 2011153282

Claims (6)

有機系廃棄物に水系エマルジョン又はラテックス含有水溶液の凝集沈殿汚泥をバインダーとして混合混練り後、成型して固化することを特徴とする固形化燃料の製造方法。  A method for producing a solidified fuel, comprising mixing and kneading a water-based emulsion or a coagulated sediment sludge of a latex-containing aqueous solution to an organic waste, followed by molding and solidifying. 前記有機系廃棄物が廃プラスチック、食品系廃棄物、木質系廃棄物及び各種有機系ごみから選ばれる単独又は２種類以上の混合物であることを特徴とする請求項１記載の固形化燃料の製造方法。  2. The solidified fuel production according to claim 1, wherein the organic waste is a single or a mixture of two or more selected from waste plastic, food waste, wood waste, and various organic wastes. Method. 前記汚泥が水系エマルジョン又はラテックス含有水溶液を凝集沈殿処理した時に発生する汚泥であり、脱水処理により含水率２０〜８０％に調整したものであることを特徴とする請求項１記載の固形化燃料の製造方法。  The solidified fuel according to claim 1, wherein the sludge is sludge generated when a water-based emulsion or latex-containing aqueous solution is coagulated and precipitated, and the water content is adjusted to 20 to 80% by dehydration. Production method. 前記有機系廃棄物を全重量中３０〜９５％含有することを特徴とする請求項１記載の固形化燃料の製造方法。  The method for producing a solidified fuel according to claim 1, wherein the organic waste is contained in an amount of 30 to 95% in the total weight. 前記脱水処理された汚泥を全重量中５〜７０％含有することを特徴とする請求項１記載の固形化燃料の製造方法。  The method for producing a solidified fuel according to claim 1, wherein the dewatered sludge is contained in an amount of 5 to 70% of the total weight. 請求項１乃至５に記載した配合物を混合、混練後、成型し、養生することにより固化成型体とすることを特徴とする固形化燃料の製造方法。  A method for producing a solidified fuel, wherein the compound according to claim 1 is mixed, kneaded, molded and cured to obtain a solidified molded body.
JP2010031782A 2010-01-27 2010-01-27 Method of manufacturing solidified fuel by recycling Withdrawn JP2011153282A (en)

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JP2012122044A (en) * 2010-12-08 2012-06-28 Tasuku Tokai:Kk Method for producing solid fuel using activated sludge, and recycling system using the same
JP2013241523A (en) * 2012-05-21 2013-12-05 Jsr Corp Solid fuel
JP2014062155A (en) * 2012-09-20 2014-04-10 Act Co Ltd Manufacturing method of dry combustible material, and dry combustible material
JP2014065761A (en) * 2012-09-24 2014-04-17 Jsr Corp Manufacturing method of solid fuel and manufacturing apparatus of solid fuel
JP5627159B1 (en) * 2014-03-03 2014-11-19 株式会社アイサク Solid fuel production apparatus and solid fuel production method
WO2015128923A1 (en) * 2014-02-25 2015-09-03 株式会社アクト Method for manufacturing dried combustible substance and dried combustible substance
JP2019073636A (en) * 2017-10-17 2019-05-16 陳一義 Regenerated fuel and method for producing the same
CN115141666A (en) * 2021-08-19 2022-10-04 浙江尚源环境科技有限公司 Derived fuel prepared from municipal sludge, and preparation method and application thereof

Cited By (15)

* Cited by examiner, † Cited by third party
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JP2012122044A (en) * 2010-12-08 2012-06-28 Tasuku Tokai:Kk Method for producing solid fuel using activated sludge, and recycling system using the same
JP2013241523A (en) * 2012-05-21 2013-12-05 Jsr Corp Solid fuel
JP2014062155A (en) * 2012-09-20 2014-04-10 Act Co Ltd Manufacturing method of dry combustible material, and dry combustible material
JP2014065761A (en) * 2012-09-24 2014-04-17 Jsr Corp Manufacturing method of solid fuel and manufacturing apparatus of solid fuel
KR101637802B1 (en) 2014-02-25 2016-07-07 가부시키카이샤 액트 Method for manufacturing dried combustible material
US10072226B2 (en) 2014-02-25 2018-09-11 Act Co., Ltd. Method for manufacturing dried combustible material and dried combustible material
WO2015128923A1 (en) * 2014-02-25 2015-09-03 株式会社アクト Method for manufacturing dried combustible substance and dried combustible substance
KR20150113812A (en) * 2014-02-25 2015-10-08 가부시키카이샤 액트 Method for manufacturing dried combustible material and dried combustible material
WO2015132857A1 (en) * 2014-03-03 2015-09-11 株式会社アイサク Device for producing solid fuel and method for producing solid fuel
RU2598375C2 (en) * 2014-03-03 2016-09-27 Айсаку Ко., Лтд. Device for producing solid fuel and method for producing solid fuel
KR101680957B1 (en) 2014-03-03 2016-11-29 가부시키가이샤 아이사쿠 Solid fuel manufacturing apparatus and method for manufacturing solid fuel
JP5627159B1 (en) * 2014-03-03 2014-11-19 株式会社アイサク Solid fuel production apparatus and solid fuel production method
US10557097B2 (en) 2014-03-03 2020-02-11 Aisaku Co., Ltd. Solid fuel manufacturing apparatus and method for manufacturing solid fuel
JP2019073636A (en) * 2017-10-17 2019-05-16 陳一義 Regenerated fuel and method for producing the same
CN115141666A (en) * 2021-08-19 2022-10-04 浙江尚源环境科技有限公司 Derived fuel prepared from municipal sludge, and preparation method and application thereof

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