JP2004136184A

JP2004136184A - Waste treatment system

Info

Publication number: JP2004136184A
Application number: JP2002302120A
Authority: JP
Inventors: Shoichi Kume; 久米　正一
Original assignee: Kangen Yoyu Gijutsu Kenkyusho KK
Current assignee: Kangen Yoyu Gijutsu Kenkyusho KK
Priority date: 2002-10-16
Filing date: 2002-10-16
Publication date: 2004-05-13
Anticipated expiration: 2022-10-16
Also published as: JP4216036B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waste treatment system for effectively treating residue or other waste formed in an apparatus for converting waste to oil, a biomass energy apparatus and/or a carbonization apparatus. <P>SOLUTION: The waste treatment system 1 is equipped with the apparatus 2 for converting waste to oil which converts a petroleum or coal product such as plastic waste or the like containing a PET bottle or a tire to oil and a reducing gas producing melting furnace 3 for supplying residue formed in the apparatus 2 for converting waste to oil as fuel or resources to melt the same at a high temperature of ≥1,000°C to obtain a high temperature liquid material and converting an oxygen-containing gas yielded in the furnace to a reducing gas. The reducing gas produced in the reducing gas producing melting furnace 3 is recovered at a relatively high temperature to be effectively put to practical use as energy resources like a high temperature gas or a fuel gas. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明の目的は、油化装置、バイオマスエネルギー装置および炭化装置で生成される残渣やその他の廃棄物を有効に処理する廃棄物処理システムに関するものである。
【０００２】
【従来の技術】
ペットボトルやタイヤを含むプラスチック廃棄物等の石油製品や石炭製品を油化して、その油を再度、石油化学樹脂の原料や燃料用の油として有効活用する試みが従来から行われているが、この場合、油化後の残渣や、その他の廃棄物は、シュレッダー等にかけて最終処分場にて埋立てに用いるしか手段がなかった。
【０００３】
また、植物、畜産物、魚貝類またはそれらの廃棄物、あるいは、畜産物等の糞などの汚物の処理は、肥料もしくはバイオマスエネルギー資源として使用する場合の他、焼却処理あるいは炭化処理のいずれかの処理を行うのが一般的である。
【０００４】
前記汚物等をバイオマス資源として使用する従来技術は、農産物、植物、森林物、廃食品、畜産物、畜産物の糞または魚貝類を、重油、灯油、天然ガスあるいは電気などのエネルギーを利用して、メタンを発生しやすい雰囲気温度（７０〜８０℃）にして、バイオマスエネルギーとしてガス回収や油化回収を行い、それを燃料にすることが行われてきたが、この場合、残渣が発生し再び新しい廃棄物の処理が重大な問題となっていた。
【０００５】
また、バイオマスエネルギー装置としてメタン発酵装置を用いた場合には、メタン発酵が生じる温度に加熱保持するため、高コストである灯油、重油、天然ガスあるいは電気などを用いる必要があった。加えて、重油を用いた場合には、窒素酸化物、硫黄酸化物、二酸化炭素などの好ましくないガスが発生し、これらのガスは、地球温暖化の原因となるため好ましくない。
【０００６】
さらに、前記汚物等を炭化処理する従来法もまた、残渣が発生してバイオマス技術の場合と同様の問題を有していた。
【０００７】
さらにまた、前記汚物等を肥料として使用する従来技術は、受入れが飽和状態にあることや、前記汚物等を肥料として使用すると異物が混入している場合があり、トラブルが発生する恐れがあった。
【０００８】
加えて、前記汚物等を焼却処理する従来法は、焼却灰やダイオキシンを排出して、環境汚染等の問題を抱えていた。
【０００９】
【発明が解決しようとする課題】
本発明の目的は、油化装置、バイオマスエネルギー装置および／または炭化装置で生成される残渣やその他の廃棄物を有効に処理する廃棄物処理システムを提供することにある。
【００１０】
【発明が解決しようとする手段】
上記目的を達成するため、第１発明は、ペットボトルやタイヤを含むプラスチック廃棄物等の石油製品や石炭製品を油化する油化装置と、油化装置で生成した残渣を、燃料や資源として供給しかつ１０００℃以上で高温溶融させて高温液状物とするとともに、炉内で発生する酸素含有ガスを還元ガス化させる還元ガス化溶融炉とを具え、かつ、この還元ガス化溶融炉内で発生した還元ガスを比較的高温で回収して、高温ガスや燃料ガスのようなエネルギー資源として有効活用することを特徴とする廃棄物処理システムである。
【００１１】
第２発明は、植物、畜産物、魚貝類またはそれらの廃棄物、あるいは、畜産物等の糞などの汚物を含むバイオマス資源からエネルギーを回収するバイオマスエネルギー装置と、バイオマスエネルギー装置で生成した残渣を、燃料や資源として供給しかつ１０００℃以上で高温溶融させて高温液状物とするとともに、炉内で発生する酸素含有ガスを還元ガス化させる還元ガス化溶融炉とを具え、かつ、この還元ガス化溶融炉内で発生した還元ガスを比較的高温で回収して、高温ガスや燃料ガスのようなエネルギー資源として有効活用することを特徴とする廃棄物処理システムである。
【００１２】
第３発明は、ペットボトルやタイヤを含むプラスチック廃棄物等の石油製品や石炭製品を油化する油化装置と、植物、畜産物、魚貝類またはそれらの廃棄物、あるいは、畜産物等の糞などの汚物を含むバイオマス資源からエネルギーを回収するバイオマスエネルギー装置と、油化装置およびバイオマスエネルギー装置で生成した残渣を、燃料や資源として供給しかつ１０００℃以上で高温溶融させて高温液状物とするとともに、炉内で発生する酸素含有ガスを還元ガス化させる還元ガス化溶融炉とを具え、かつ、この還元ガス化溶融炉内で発生した還元ガスを比較的高温で回収して、高温ガスや燃料ガスのようなエネルギー資源として有効活用することを特徴とする廃棄物処理システムである。
【００１３】
また、第１〜第３発明ではいずれも、さらに、一般廃棄物、産業廃棄物、バイオマス資源などの炭素含有物を炭化・分解させて、炭化ガスおよび炭化物を生成する炭化装置を具え、かつ、炭化装置で生成した炭化物および残渣を、還元ガス化溶融炉の燃料や資源として有効活用することが好ましい。
【００１４】
加えて、第１〜第３発明ではいずれも、さらに、還元ガス化溶融炉内で発生した高温ガスの熱を利用して水蒸気を発生させる蒸気発生器を具え、かつ、蒸気発生器によって発生した水蒸気の熱を炭化装置やバイオマスエネルギー装置に有効活用することが好ましい。
【００１５】
さらにまた、第１〜第３発明ではいずれも、ガス化溶融炉で生成する還元ガス等のエネルギー資源や、油化装置、バイオマスエネルギー装置および炭化装置の少なくとも１つの装置で生成するエネルギー資源とを、これらの炉および装置に相互に有効活用するように構成することが好ましい。
【００１６】
加えて、第２及び第３発明ではいずれも、バイオマスエネルギー装置は、メタンガスを生成するメタン発酵装置であり、このメタン発酵装置は、メタンを発酵させる温度に加熱保持するため、ガス化溶融炉、油化装置および／または炭化装置で生成される高温排ガスを有効活用するように構成することがより好適である。
【００１７】
【発明の実施の形態】
以下、本発明の実施形態を図面を参照しながら説明する。
図１は、第１発明に従う廃棄物処理システムを用いて廃棄物を処理するときのフローチャートを示したものである。
【００１８】
図１に示すフローチャートは、廃棄物処理システム１が、主として油化装置２と還元ガス化溶融炉３とによって構成されている場合のものである。
【００１９】
油化装置２は、ペットボトルやタイヤを含むプラスチック廃棄物等の石油製品や石炭製品を油化するための装置であり、この装置で油化する方法は、例えば、図１に示すように、前記石油製品を供給する投入口（図示せず）をもち、この投入口から供給された前記石油製品を、乾留した後に２５０〜５００℃の温度で加熱溶融させ、揮発成分をガス化（蒸気化）したものを冷却し液体化させることによって燃料油が精製され、この燃料油を、例えば、図１に示すディーゼルエンジン４などの各種エンジンを作動させて発電するための燃料として、または、バスなどの車両の燃料として有効活用することができる。
【００２０】
また、油化装置２で生成した残渣を、図２に示すように、還元ガス化溶融炉３の燃料として有効活用することができる。
【００２１】
還元ガス化溶融炉３は、油化装置２で生成した残渣を、燃料として供給しかつ１０００℃以上で高温溶融させて高温液状物とするとともに、炉内で発生する酸素含有ガスを還元ガス化させるコークスベット式還元ガス化溶融炉である。
【００２２】
なお、ここでいう「高温液状物」とは、例えば、一般廃棄物や産業廃棄物などを焼却処理または溶融処理する還元ガス化溶融炉内で生成される１０００℃以上の溶融スラグや溶融メタルなどの溶融物が挙げられる。かかる溶融物の温度の上限は、炉を構成する耐火物の耐熱温度を考慮して、２６００℃とすることが好ましい。特に、溶融物の温度は、１０００〜１３２０℃であることがより好適である。
【００２３】
そして、第１発明では、還元ガス化溶融炉３内で発生した還元ガスを比較的高温、好適には１０００〜２６００℃の温度のままで回収して、図１に示すような高温（排）ガスや燃料ガスのようなエネルギー資源として有効活用する。
【００２４】
図１では、還元ガス化溶融炉３内で発生した還元ガスを高温排ガスとして有効活用した場合の例であり、還元ガス化溶融炉３から排出した高温排ガスをガス改質処理５とガス清浄化処理６を経て、発電機、図１では、ガスエンジン７に高温のまま供給することによって、発電することができ、この発電によって得られた電力を、例えば還元ガス化溶融炉３の運転のために供給すれば、コストの削減が図れ、経済的に有利となる。
【００２５】
また、図２では、還元ガス化溶融炉３内で発生した還元ガス、例えばＨ_２ガスとして回収して燃料ガスとして有効活用した場合の例であり、この燃料ガスを用いて発電システム８で発電させ、この発電によって得られた電力を、図２に示すように電力会社９に供給したり工場に供給すれば、結果的に、廃棄物処理コストの削減が図れ、経済的に有利となる。
【００２６】
なお、高温（排）ガスや燃料ガスのようなエネルギー資源を用いた発電によって得られた電力だけでは足りない場合には、電力会社から供給される電力で補えばよい。
【００２７】
第２発明に従う廃棄物処理システムは、図３に示すように、油化装置２に代えて、バイオマスエネルギー装置１０を具え、バイオマスエネルギー装置１０で生成した残渣を、還元ガス化溶融炉３の燃料として供給すること以外は、第１発明の廃棄物処理システムの構成とほぼ同様の構成を有する。
【００２８】
バイオマスエネルギー装置１０は、植物、畜産物、魚貝類またはそれらの廃棄物、あるいは、畜産物等の糞などの汚物を含むバイオマス資源からエネルギーを回収する構成を有する。
【００２９】
図４は、第２発明の実施形態の一例を示す図であって、バイオマスエネルギー装置１０としてメタン発酵装置１１を用いたものである。
【００３０】
図４の廃棄物処理装置は、還元ガス化溶融炉３から排出された高温排ガスを蒸気発生器のような熱交換器１２を介して発電させ、この発電によって得られた電力をメタン発酵装置１１でメタンを発酵させるために必要な温度に加熱保持するのに用いるとともに、メタン発酵によって生成した残渣を、還元ガス化溶融炉３に供給し高温溶融させて、スラグやメタル中に固溶するため、かかる廃棄物処理では最終的には残渣は生じない。
【００３１】
また、第１〜第３発明では、上記構成に加えて、図２に示すように、炭化装置１３をさらに具えてもよい。
【００３２】
炭化装置１３は、一般廃棄物、産業廃棄物、バイオマス資源などの炭素含有物を供給する投入口（図示せず）を有し、この投入口から炭素含有物を供給し、炭素含有物を炭化・分解させて、炭化ガスと炭化物とを生成させる構成をもち、図２では、炭化装置１３で生成した炭化物や残渣等を、還元ガス化溶融炉３内に供給し高温溶融させて、スラグやメタル中に固溶するため、かかる廃棄物処理では最終的には残渣は生じない。
【００３３】
さらに、第１〜第３発明では、図３に示すように、還元ガス化溶融炉３内で発生した高温ガス（１０００〜２６００℃）の熱を利用して水蒸気を発生させる蒸気発生器１４を具え、かつ、蒸気発生器１２によって発生した７００〜９００℃の温度の水蒸気の熱をそのまま炭化装置１３に有効活用し、あるいは、蒸気発生器１４によって発生した７００〜９００℃の温度の水蒸気の熱を利用して熱交換器１２を用いて８０〜１００℃の高温ガス（例えば高温空気）に変換し、この高温ガスの熱をバイオマスエネルギー装置１０にそれぞれ有効活用することが、コストの点で有利である。
【００３４】
さらにまた、第１〜第３発明では、ガス化溶融炉で生成する還元ガス等のエネルギー資源や、油化装置、バイオマスエネルギー装置および炭化装置の少なくとも１つの装置で生成するエネルギー資源とを、これらの炉および装置に相互に有効活用するように構成することが、廃棄物処理コストを削減できる点で好ましい。
【００３５】
加えて、図４では、バイオマスエネルギー装置は、メタンガスを生成するメタン発酵装置であり、このメタン発酵装置は、メタンを発酵させる温度に加熱保持するため、ガス化溶融炉から排出される高温排ガスを有効活用するように構成したが、これだけには限定されず、油化装置や炭化装置で生成される高温排ガスを有効活用するように構成してもよい。
【００３６】
上述したところは、この発明の実施形態の一例を示したにすぎず、請求の範囲において種々の変更を加えることができる。
【００３７】
例えば、還元ガス化溶融炉で残渣等の廃棄物を高温溶融し、冷却後に得られたスラグは路盤材などに用いることができる。
【００３８】
【実施例】
本発明の廃棄物処理システム（図３）を用いて廃棄物を処理した。そのときの、残渣発生率は０％であった。
比較のため、従来のバイオマスエネルギー装置と、従来の炭化装置でそれぞれ廃棄物処理をしたところ、残渣発生率は、それぞれ４１％と２７％であった。
【００３９】
【発明の効果】
本発明によれば、油化装置、バイオマスエネルギー装置および／または炭化装置で生成される残渣やその他の廃棄物を有効に処理する廃棄物処理システムの提供が可能になった。
【００４０】
また、残渣物は、最終的には発生しないので、従来装置のように、埋立て場所である最終処分場を不要とすることができる。
【００４１】
さらに、還元ガス化溶融炉、油化装置、バイオマスエネルギー装置および／または炭化装置内で生成したエネルギー資源を有効活用すれば、廃棄物処理コストが格段に向上する。
【図面の簡単な説明】
【図１】第１発明に従う廃棄物処理システムのフローチャートである。
【図２】第１発明に従う廃棄物処理システムの他のフローチャートである。
【図３】第２発明に従う廃棄物処理システムのフローチャートである。
【図４】第２発明に従う廃棄物処理システムの概略図である。
【符号の説明】
１　廃棄物処理システム
２　油化装置
３　還元ガス化溶融炉
４　ディーゼルエンジン
５　ガス改質処理
６　ガス清浄化処理
７　ガスエンジン
８　発電システム
９　電力会社
１０　バイオマスエネルギー装置
１１　メタン発酵装置
１２　熱交換器
１３　炭化装置
１４　蒸気発生器[0001]
TECHNICAL FIELD OF THE INVENTION
An object of the present invention relates to a waste treatment system that effectively treats residues and other wastes generated in an oil conversion device, a biomass energy device, and a carbonization device.
[0002]
[Prior art]
Attempts have been made to convert petroleum products and coal products, such as plastic waste including PET bottles and tires, into oil and use the oil again as a raw material for petrochemical resins and fuel oil. In this case, there has been no alternative but to use the shredded residue and other wastes for landfill at the final disposal site.
[0003]
In addition, wastes such as plants, livestock products, fish and shellfish or their wastes, or feces such as livestock products can be treated by fertilizer or biomass energy resources, or by incineration or carbonization. Processing is generally performed.
[0004]
Conventional technology using the wastes and the like as biomass resources, agricultural products, plants, forests, waste foods, livestock products, livestock dung or fish and shellfish, using heavy oil, kerosene, natural gas or electricity and other energy Gas recovery or oil recovery as biomass energy has been carried out at an ambient temperature (70 to 80 ° C.) where methane is likely to be generated, and this has been used as fuel. The disposal of new waste was a serious problem.
[0005]
When a methane fermentation device is used as a biomass energy device, it is necessary to use high-cost kerosene, heavy oil, natural gas, electricity, or the like in order to heat and maintain the temperature at which methane fermentation occurs. In addition, when heavy oil is used, undesirable gases such as nitrogen oxides, sulfur oxides, and carbon dioxide are generated, and these gases are not preferred because they cause global warming.
[0006]
Further, the conventional method of carbonizing the above-mentioned filth and the like also has the same problem as in the case of biomass technology due to generation of residues.
[0007]
Furthermore, in the prior art using the filth and the like as a fertilizer, there is a case where the reception is in a saturated state, and when the filth and the like are used as a fertilizer, foreign substances may be mixed therein, and a trouble may occur. .
[0008]
In addition, the conventional method of incinerating the above-mentioned filth and the like has a problem such as environmental pollution by emitting incinerated ash and dioxin.
[0009]
[Problems to be solved by the invention]
An object of the present invention is to provide a waste treatment system that effectively treats residues and other wastes generated in an oil conversion device, a biomass energy device, and / or a carbonization device.
[0010]
Means to be Solved by the Invention
In order to achieve the above object, a first invention is to use a petrochemical device for oilifying petroleum products and coal products such as plastic waste including plastic bottles and tires, and a residue generated by the oil generating device as fuel or resources. A reduction gasification and melting furnace for supplying and melting at a high temperature of 1000 ° C. or higher to a high temperature liquid material, and reducing and gasifying an oxygen-containing gas generated in the furnace into a reduction gas. The waste treatment system is characterized in that generated reducing gas is collected at a relatively high temperature and is effectively used as an energy resource such as a high-temperature gas or a fuel gas.
[0011]
The second invention is a biomass energy device for recovering energy from biomass resources including plants, livestock products, fish and shellfish or wastes thereof, or feces such as feces such as livestock products, and a residue generated by the biomass energy device. A reducing gasification and melting furnace for supplying as fuel and resources and melting at a temperature of 1000 ° C. or higher to form a high-temperature liquid substance, and for reducing oxygen-containing gas generated in the furnace into a reducing gas. A waste treatment system characterized in that a reducing gas generated in a gasification and melting furnace is collected at a relatively high temperature and is effectively used as an energy resource such as a high-temperature gas or a fuel gas.
[0012]
The third invention relates to an oil converting apparatus for converting petroleum products and coal products such as plastic waste including PET bottles and tires, and plants, livestock products, fish and shellfishes or wastes thereof, and feces such as livestock products. A biomass energy device that recovers energy from biomass resources including waste such as waste, and a residue generated by a liquefier and a biomass energy device are supplied as fuel and resources, and are melted at a high temperature of 1000 ° C. or more to be a high-temperature liquid material. And a reduction gasification and melting furnace for converting the oxygen-containing gas generated in the furnace into a reduction gas, and recovering the reduction gas generated in the reduction gasification and melting furnace at a relatively high temperature to obtain a high-temperature gas or A waste treatment system characterized by being effectively used as an energy resource such as fuel gas.
[0013]
Further, any of the first to third inventions further includes a carbonization device that carbonizes and decomposes a carbon-containing substance such as general waste, industrial waste, and biomass resources to generate a carbonized gas and a carbide, and It is preferable to effectively utilize the carbides and residues generated by the carbonization device as fuel and resources for the reduction gasification and melting furnace.
[0014]
In addition, any of the first to third inventions further includes a steam generator that generates steam by utilizing heat of the high-temperature gas generated in the reduction gasification and melting furnace, and is generated by the steam generator. It is preferable to effectively utilize the heat of the steam for the carbonizing device and the biomass energy device.
[0015]
Furthermore, in any of the first to third inventions, energy resources such as reducing gas generated in a gasification and melting furnace, and energy resources generated in at least one of an oilifier, a biomass energy device, and a carbonizer are used. It is preferable that these furnaces and apparatuses are configured to be effectively utilized mutually.
[0016]
In addition, in both of the second and third inventions, the biomass energy device is a methane fermentation device that generates methane gas, and the methane fermentation device is heated and maintained at a temperature at which methane is fermented. It is more preferable to configure so as to effectively use the high-temperature exhaust gas generated in the oiling device and / or the carbonizing device.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a flowchart when processing wastes using the waste processing system according to the first invention.
[0018]
The flowchart shown in FIG. 1 is for the case where the waste treatment system 1 is mainly constituted by the oiling device 2 and the reduction gasification melting furnace 3.
[0019]
The oiling device 2 is a device for oiling petroleum products and coal products such as plastic waste including PET bottles and tires. A method of oiling with this device is, for example, as shown in FIG. It has an input port (not shown) for supplying the petroleum product. The petroleum product supplied from the input port is carbonized and then heated and melted at a temperature of 250 to 500 ° C. to gasify (vaporize) volatile components. The fuel oil is refined by cooling and liquefying the fuel oil, and this fuel oil is used as a fuel for generating electricity by operating various engines such as the diesel engine 4 shown in FIG. 1 or a bus or the like. Can be effectively used as fuel for vehicles.
[0020]
In addition, as shown in FIG. 2, the residue generated by the oiling device 2 can be effectively used as fuel for the reduction gasification and melting furnace 3.
[0021]
The reduction gasification / melting furnace 3 supplies the residue generated by the oiling device 2 as fuel and melts it at a high temperature of 1000 ° C. or higher to form a high-temperature liquid, and converts the oxygen-containing gas generated in the furnace into a reduction gas. This is a coke bed type reduction gasification and melting furnace.
[0022]
The term "high-temperature liquid material" used herein refers to, for example, molten slag or molten metal at a temperature of 1000 ° C. or higher generated in a reduction gasification melting furnace for incinerating or melting general waste or industrial waste. And a melt thereof. The upper limit of the temperature of the melt is preferably 2600 ° C. in consideration of the heat resistant temperature of the refractory constituting the furnace. In particular, the temperature of the melt is more preferably 1000 to 1320 ° C.
[0023]
In the first invention, the reducing gas generated in the reducing gasification and melting furnace 3 is recovered at a relatively high temperature, preferably at a temperature of 1000 to 2600 ° C., and the high temperature (discharge) as shown in FIG. Effectively use as energy resources such as gas and fuel gas.
[0024]
FIG. 1 shows an example in which the reducing gas generated in the reduction gasification / melting furnace 3 is effectively used as high-temperature exhaust gas. The high-temperature exhaust gas discharged from the reduction gasification / melting furnace 3 is subjected to a gas reforming process 5 and gas cleaning. After the process 6, the power can be generated by supplying the generator, in FIG. 1, the gas engine 7 at a high temperature, and the power can be generated. If supplied, the cost can be reduced, which is economically advantageous.
[0025]
FIG. 2 shows an example in which the reducing gas generated in the reducing gasification and melting furnace 3, for example, H ₂ gas, is recovered and effectively used as a fuel gas, and power is generated by the power generation system 8 using the fuel gas. Then, if the power obtained by this power generation is supplied to the power company 9 or supplied to the factory as shown in FIG. 2, as a result, waste disposal costs can be reduced, which is economically advantageous.
[0026]
If power obtained by power generation using energy resources such as high-temperature (exhaust) gas or fuel gas is not sufficient, the power may be supplemented with power supplied from a power company.
[0027]
As shown in FIG. 3, the waste treatment system according to the second invention includes a biomass energy device 10 instead of the oiling device 2, and the residue generated by the biomass energy device 10 is supplied to the fuel in the reduction gasification and melting furnace 3. Except for supplying as a wastewater treatment system, it has substantially the same configuration as the configuration of the waste disposal system of the first invention.
[0028]
The biomass energy device 10 has a configuration for recovering energy from biomass resources including plants, livestock products, fish and shellfish or wastes thereof, or waste such as feces such as livestock products.
[0029]
FIG. 4 is a view showing an example of the embodiment of the second invention, in which a methane fermentation device 11 is used as the biomass energy device 10.
[0030]
4 generates high-temperature exhaust gas discharged from the reduction gasification / melting furnace 3 through a heat exchanger 12 such as a steam generator, and uses the power obtained by the power generation as a methane fermentation apparatus 11. To heat and maintain the temperature required for fermenting methane at the same time, and to supply the residue generated by methane fermentation to the reduction gasification and melting furnace 3 for high-temperature melting to form a solid solution in slag and metal. In the waste treatment, no residue is finally generated.
[0031]
Further, in the first to third inventions, in addition to the above configuration, as shown in FIG. 2, a carbonizing device 13 may be further provided.
[0032]
The carbonization device 13 has an input port (not shown) for supplying carbon-containing materials such as general waste, industrial waste, and biomass resources. The carbon-containing material is supplied from this input port to carbonize the carbon-containing material. 2 has a configuration in which it is decomposed to generate a carbonized gas and a carbide. In FIG. 2, the carbides, residues, and the like generated in the carbonization device 13 are supplied into the reduction gasification and melting furnace 3 and melted at a high temperature, and slag and Since the solid solution is formed in the metal, no residue is finally generated in the waste treatment.
[0033]
Further, in the first to third inventions, as shown in FIG. 3, the steam generator 14 that generates steam by using the heat of the high-temperature gas (1000 to 2600 ° C.) generated in the reduction gasification and melting furnace 3 is used. The heat of the steam at a temperature of 700 to 900 ° C. generated by the steam generator 12 is effectively used as it is for the carbonization device 13 or the heat of the steam at a temperature of 700 to 900 ° C. generated by the steam generator 14 It is advantageous in terms of cost to convert the gas into a high-temperature gas (for example, high-temperature air) of 80 to 100 ° C. using the heat exchanger 12 using the heat exchanger 12 and to effectively utilize the heat of the high-temperature gas in the biomass energy device 10. It is.
[0034]
Furthermore, in the first to third inventions, the energy resources such as the reducing gas generated in the gasification and melting furnace, and the energy resources generated in at least one of the liquefier, the biomass energy device and the carbonization device are used. It is preferable to configure the furnace and the apparatus so as to effectively utilize each other in that the waste disposal cost can be reduced.
[0035]
In addition, in FIG. 4, the biomass energy device is a methane fermentation device that generates methane gas, and the methane fermentation device heats and holds the methane fermentation to a temperature at which methane is fermented. Although the configuration is made to effectively utilize, the invention is not limited to this, and the configuration may be such that the high-temperature exhaust gas generated in the oiling device or the carbonizing device is effectively utilized.
[0036]
What has been described above is merely an example of the embodiment of the present invention, and various changes can be made within the scope of the claims.
[0037]
For example, wastes such as residues are melted at a high temperature in a reducing gasification melting furnace, and slag obtained after cooling can be used for roadbed materials and the like.
[0038]
【Example】
Waste was treated using the waste treatment system of the present invention (FIG. 3). At that time, the residue generation rate was 0%.
For comparison, when the conventional biomass energy device and the conventional carbonization device were respectively subjected to waste treatment, the residue generation rates were 41% and 27%, respectively.
[0039]
【The invention's effect】
Advantageous Effects of Invention According to the present invention, it has become possible to provide a waste treatment system that effectively treats residues and other wastes generated in an oil conversion device, a biomass energy device, and / or a carbonization device.
[0040]
Further, since the residue is not finally generated, it is not necessary to use a final disposal site, which is a landfill site, unlike the conventional apparatus.
[0041]
Furthermore, if the energy resources generated in the reduction gasification melting furnace, the oil conversion device, the biomass energy device and / or the carbonization device are effectively used, the cost of waste disposal is significantly increased.
[Brief description of the drawings]
FIG. 1 is a flowchart of a waste disposal system according to a first invention.
FIG. 2 is another flowchart of the waste disposal system according to the first invention.
FIG. 3 is a flowchart of a waste disposal system according to the second invention.
FIG. 4 is a schematic diagram of a waste treatment system according to a second invention.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 waste treatment system 2 oil conversion device 3 reduction gasification and melting furnace 4 diesel engine 5 gas reforming process 6 gas purification process 7 gas engine 8 power generation system 9 power company 10 biomass energy device 11 methane fermentation device 12 heat exchanger 13 Carbonization device 14 Steam generator

Claims

An oiling device that oils petroleum products and coal products such as plastic waste including PET bottles and tires,
A reducing gasification and melting furnace that supplies the residue generated by the oiling device as a fuel or a resource and melts it at a high temperature of 1000 ° C. or higher to form a high-temperature liquid material, and reduces the oxygen-containing gas generated in the furnace into a reducing gas. ,
And a waste gas treatment system characterized in that the reducing gas generated in the reducing gasification and melting furnace is recovered at a relatively high temperature and is effectively used as an energy resource such as a high-temperature gas or a fuel gas.

A biomass energy device that recovers energy from biomass resources including waste such as plants, livestock products, fish and shellfish or their waste, or feces such as livestock products,
A reduction gasification and melting furnace that supplies the residue generated by the biomass energy device as a fuel or a resource and melts it at a high temperature of 1000 ° C. or higher to form a high-temperature liquid material, and converts the oxygen-containing gas generated in the furnace into a reduction gas. ,
And a waste gas treatment system characterized in that the reducing gas generated in the reducing gasification and melting furnace is recovered at a relatively high temperature and is effectively used as an energy resource such as a high-temperature gas or a fuel gas.

An oiling device that oils petroleum products and coal products such as plastic waste including PET bottles and tires,
A biomass energy device that recovers energy from biomass resources including waste such as plants, livestock products, fish and shellfish or their waste, or feces such as livestock products,
A reducing gas that supplies the residue generated by the oiling device and biomass energy device as a fuel or resource, melts it at a high temperature of 1000 ° C. or higher to form a high-temperature liquid, and reduces the oxygen-containing gas generated in the furnace into a reducing gas. Chemical melting furnace,
And a waste gas treatment system characterized in that the reducing gas generated in the reducing gasification and melting furnace is recovered at a relatively high temperature and is effectively used as an energy resource such as a high-temperature gas or a fuel gas.

4. The waste treatment system according to claim 1, further comprising a carbonization device that carbonizes and decomposes a carbon-containing material such as general waste, industrial waste, and biomass resources to generate a carbonized gas and a carbide. A waste treatment system characterized by effectively utilizing carbides and residues generated by a carbonization device as fuel and resources of a reduction gasification and melting furnace.

The waste treatment system according to any one of claims 1 to 4, further comprising a steam generator that generates steam using heat of a high-temperature gas generated in the reduction gasification and melting furnace, and A waste treatment system characterized by effectively utilizing the heat of steam generated by a steam generator for a carbonization device and a biomass energy device.

The waste treatment system according to any one of claims 1 to 5, wherein the waste gas is generated by an energy resource such as a reducing gas generated in a gasification and melting furnace, or by at least one of an oil conversion device, a biomass energy device, and a carbonization device. A waste treatment system characterized in that the energy resources to be used are effectively used for these furnaces and devices.

In the waste treatment system according to any one of claims 2 to 6, the biomass energy device is a methane fermentation device that generates methane gas, and the methane fermentation device is heated and maintained at a temperature at which methane is fermented. A waste treatment system configured to effectively utilize high-temperature exhaust gas generated in a gasification / melting furnace, an oilification device, and / or a carbonization device.