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JP2005198618A - Methane fermenter - Google Patents

Methane fermenter Download PDF

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JP2005198618A
JP2005198618A JP2004010694A JP2004010694A JP2005198618A JP 2005198618 A JP2005198618 A JP 2005198618A JP 2004010694 A JP2004010694 A JP 2004010694A JP 2004010694 A JP2004010694 A JP 2004010694A JP 2005198618 A JP2005198618 A JP 2005198618A
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methane fermentation
methane
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Susumu Kaneko
進 金子
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KANETSU GIKEN KK
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/24—Heat exchange systems, e.g. heat jackets or outer envelopes inside the vessel
    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a methane fermenter that has a simple structure, and can economically be miniaturized. <P>SOLUTION: This methane fermenter 1 is equipped with a methane fermentation tank 3 into which organic waste 2 is fed and fermented to generate methane and a heating means 4 for heating the organic waste 2 in the fermentation tank 3 wherein the heating means 4 is arranged in the methane fermentation tank 3 and is constituted of a heat-exchanging pipe 7 through which warm water is circulated. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、家畜のふん尿等の有機性廃棄物をメタン発酵させるメタン発酵装置に関するものである。   The present invention relates to a methane fermentation apparatus for methane fermentation of organic waste such as livestock manure.

従来、多くの酪農家では、家畜のふん尿に関してそのまま野積みにしたり、素掘りの溜め池に貯蔵するなどしている。これらは堆肥として利用されることもあるが、その使用量は排出量に比べると少ない場合が多く、大部分のふん尿は野ざらしとして放置されたままというのが実情である。しかし、土壌汚染や臭気の問題など環境保全の観点からすればこのような簡便な処置は好ましいことではない。   Traditionally, many dairymen have used the livestock excreta as they are piled up or stored in an underground pond. These are sometimes used as compost, but the amount used is often small compared to the amount discharged, and most manure remains untreated. However, such a simple treatment is not preferable from the viewpoint of environmental conservation such as soil contamination and odor problems.

一方、近年では、家畜のふん尿や生ゴミ等の有機性廃棄物に関する処理技術として、これらを槽内に投入してメタン発酵させ、発酵後の有機性廃棄物は脱水して水と汚泥に分離処理し、発生したメタンはガス発電機等のエネルギー源として有効利用する、いわゆるバイオガスプラントに関する開発が盛んに進められており、その一例が特許文献１に開示されている。
特開２００２−１１４４７号公報（第２頁及び第３頁、図６） On the other hand, in recent years, as a treatment technology for organic waste such as livestock manure and garbage, these are put into a tank and fermented with methane, and the organic waste after fermentation is dehydrated and separated into water and sludge. The development of a so-called biogas plant in which methane generated after treatment is effectively used as an energy source for a gas generator or the like is being actively promoted, and an example thereof is disclosed in Patent Document 1.
JP 2002-11447 A (2nd and 3rd pages, FIG. 6)

槽内において効率的にメタン発酵させるためには、槽内の温度を適宜な温度（例えば５０℃前後）まで加温させる必要があり、公知となっている各種のバイオガスプラントにおいてもこの加温手段については様々な技術が開示されている。例えば、メタン発酵槽に投入する前に、予め別の加温槽にて有機性廃棄物を加温しておく方法や、前記特許文献１においては、メタン発酵槽全体を囲むように、温水が循環する加温槽を設ける方法が開示されている。しかしながら、このように別途に加温槽を設ける構成やメタン発酵槽を囲むように加温槽を設ける構成は構造が複雑になりやすく、高価なプラントとなり、また装置も大型化するので装置の設置スペースが大きくなるという問題がある。   In order to efficiently perform methane fermentation in the tank, it is necessary to heat the temperature in the tank to an appropriate temperature (for example, around 50 ° C.), and this heating is also performed in various known biogas plants. Various techniques are disclosed for the means. For example, before charging into a methane fermentation tank, in a method of heating organic waste in a separate heating tank in advance, or in Patent Document 1, warm water is provided so as to surround the entire methane fermentation tank. A method of providing a circulating heating tank is disclosed. However, such a configuration in which a separate heating tank is provided or a configuration in which a heating tank is provided so as to surround the methane fermentation tank tends to be complicated in structure, resulting in an expensive plant and an increase in the size of the apparatus. There is a problem that the space becomes large.

本発明は、構造が簡単であり、経済的で小型化が可能なメタン発酵装置を提供することを目的としている。   An object of the present invention is to provide a methane fermentation apparatus that has a simple structure, is economical, and can be miniaturized.

前記課題を解決するため、本発明は、有機性廃棄物が投入され、該有機性廃棄物を発酵させてメタンを発生させるメタン発酵槽と、該メタン発酵槽内の有機性廃棄物を加温する加温手段と、を備えたメタン発酵装置であって、前記加温手段は、前記メタン発酵槽内に配設され、温水が循環する熱交換パイプからなることを特徴とするメタン発酵装置とした。   In order to solve the above-mentioned problems, the present invention is directed to a methane fermentation tank in which organic waste is input, fermenting the organic waste to generate methane, and heating the organic waste in the methane fermentation tank A methane fermentation apparatus comprising: a methane fermentation apparatus comprising: a heat exchange pipe that is disposed in the methane fermentation tank and in which hot water circulates; did.

当該メタン発酵装置によれば、有機性廃棄物は、熱媒たる温水から熱交換を受けて加温され、メタン発酵が効率的に行われる。別途に加温槽を設ける必要もなく簡易な構造となるので、経済的な装置となり、またコンパクトな装置となるので設置において省スペース化が図れる。   According to the methane fermentation apparatus, the organic waste is heated by heat exchange from warm water as a heat medium, and methane fermentation is efficiently performed. Since there is no need to provide a separate heating tank, the structure is simple and the apparatus is economical, and the apparatus is compact so that space can be saved during installation.

また、前記メタン発酵槽内において有機性廃棄物に埋没するように水タンクが形成されると共に、前記熱交換パイプは該水タンク内に配設され、該水タンク内の水を介して有機性廃棄物を加温する構成とした。   In addition, a water tank is formed so as to be buried in organic waste in the methane fermentation tank, and the heat exchange pipe is disposed in the water tank, and organically passes through the water in the water tank. It was set as the structure which heats a waste.

当該構成によれば、熱交換パイプの腐食を防止でき、メタン発酵装置の長期信頼性が向上する。   According to the said structure, corrosion of a heat exchange pipe can be prevented and the long-term reliability of a methane fermentation apparatus improves.

また、前記温水は循環式温水ボイラから供給される構成とした。   The warm water is supplied from a circulating hot water boiler.

当該構成によれば、例えば循環式温水ボイラを既に保有している酪農家にとってメタン発酵装置に関する初期投資額が抑えられる。   According to the said structure, the initial investment amount regarding a methane fermentation apparatus can be suppressed, for example for the dairy farmer who already has the circulating hot water boiler.

また、前記有機性廃棄物の加温初期時においては汎用燃料により前記循環式温水ボイラを作動させ、前記メタン発酵槽内で所定量のメタンが発生した時点で、燃料を前記メタンに切り替えて前記循環式温水ボイラを作動可能に構成した。   Further, at the initial heating of the organic waste, the circulating hot water boiler is operated with a general-purpose fuel, and when a predetermined amount of methane is generated in the methane fermentation tank, the fuel is switched to the methane and the A circulating hot water boiler was configured to be operable.

当該構成によれば、メタンを有効利用でき、メタン発酵装置のランニングコストを抑えることができる。   According to the said structure, methane can be used effectively and the running cost of a methane fermentation apparatus can be suppressed.

また、前記温水は循環式太陽熱温水器から供給される構成とした。   The hot water is supplied from a circulating solar water heater.

当該構成によれば、例えば循環式太陽熱温水器を既に保有している酪農家にとってメタン発酵装置に関する初期投資額が抑えられる。   According to the said structure, the initial investment amount regarding a methane fermentation apparatus is restrained, for example for the dairy farmer who already has the circulation type solar water heater.

本発明によれば、別途に加温槽を設ける必要もなく簡易な構造となるので、経済的な装置となり、またコンパクトな装置となるので設置において省スペース化が図れる。   According to the present invention, there is no need to provide a separate heating tank, and the structure becomes simple, so that the apparatus is economical and the apparatus is compact, so that space can be saved in installation.

図１は本発明に係るメタン発酵装置１の構成フロー図である。メタン発酵装置１は、主な構成として、有機性廃棄物２が投入され、この有機性廃棄物２を発酵させてメタンを発生させるメタン発酵槽３と、メタン発酵槽３内の有機性廃棄物２を加温する加温手段４とを備える。メタン発酵槽３に投入される有機性廃棄物２としては、例えば家畜のふん尿、家庭で廃棄される生ゴミ等である。   FIG. 1 is a configuration flow diagram of a methane fermentation apparatus 1 according to the present invention. The methane fermentation apparatus 1 is mainly composed of an organic waste 2 and fermenting the organic waste 2 to generate methane, and the organic waste in the methane fermentation tank 3. Heating means 4 for heating 2. As the organic waste 2 thrown into the methane fermenter 3, for example, livestock excreta, raw garbage discarded at home, and the like.

有機性廃棄物２は一旦貯留槽５に貯留され、ポンプ等により貯留槽５から適宜量の有機性廃棄物２がメタン発酵槽３に送出される。メタン発酵槽３は、有機性廃棄物２の発酵時に発生するメタン及び廃液（消化液）を槽の外部に排出できるように構成されている。図では廃液が廃液槽６に排出される態様を示しているが、これに限られることなく、例えば、メタン発酵槽３から直接、脱水処理装置（図示せず）に排出する態様としても良い。   The organic waste 2 is once stored in the storage tank 5, and an appropriate amount of the organic waste 2 is sent from the storage tank 5 to the methane fermentation tank 3 by a pump or the like. The methane fermentation tank 3 is configured to discharge methane and waste liquid (digestion liquid) generated during fermentation of the organic waste 2 to the outside of the tank. Although the figure shows a mode in which the waste liquid is discharged to the waste liquid tank 6, the present invention is not limited to this. For example, a mode in which the waste liquid is directly discharged from the methane fermentation tank 3 to the dehydration apparatus (not shown) may be used.

このメタン発酵後に得られる廃液は、脱水処理を施すことにより処理水と汚泥とに分離される。処理水は浄化装置（図示せず）を介して浄化処理水にすることも可能であるが、浄化処理を施すことなく、そのまま液肥として利用することもできる。また、メタンは、発動機やガス灯、ガス冷蔵庫、ガス給湯器、ガスコンロ等の燃料として有効利用される。   The waste liquid obtained after the methane fermentation is separated into treated water and sludge by performing a dehydration process. The treated water can be made purified water through a purification device (not shown), but can also be used as liquid fertilizer without being subjected to the purification treatment. In addition, methane is effectively used as a fuel for engines, gas lamps, gas refrigerators, gas water heaters, gas stoves, and the like.

さて、本発明は、前記加温手段４を、メタン発酵槽３内に配設され、温水が循環する熱交換パイプ７から構成したことを主な特徴とする。熱交換パイプ７は、後記するようにメタン発酵槽３の外部に設置されるボイラ８や太陽熱温水器９（図３）に接続しており、槽壁や槽の上部等からメタン発酵槽３の内部に挿入するように配管される。熱交換パイプ７は、メタン発酵槽３内の有機性廃棄物２に直接埋没されるように配設しても良いが、その場合、有機性廃棄物２が発酵した際に発生する硫化水素でパイプが腐食しやすい状態になってしまう。   Now, the present invention is mainly characterized in that the heating means 4 is composed of a heat exchange pipe 7 that is disposed in the methane fermentation tank 3 and in which hot water circulates. As will be described later, the heat exchange pipe 7 is connected to a boiler 8 and a solar water heater 9 (FIG. 3) installed outside the methane fermentation tank 3. Piped to be inserted inside. The heat exchange pipe 7 may be disposed so as to be directly buried in the organic waste 2 in the methane fermentation tank 3, but in that case, hydrogen sulfide generated when the organic waste 2 is fermented is used. Pipes are prone to corrosion.

そこで、本実施形態では、メタン発酵槽３内において有機性廃棄物２に埋没するように水タンク１０を形成し、熱交換パイプ７をこの水タンク１０内に配設して、水タンク１０内の水を介して有機性廃棄物２を加温する構成としてある。つまり、水タンク１０の水を加温することにより、有機性廃棄物２に対して間接的に加温する構成としたものである。水タンク１０は、メタン発酵槽３内において局所的に配設されるものである。   Therefore, in the present embodiment, the water tank 10 is formed so as to be buried in the organic waste 2 in the methane fermentation tank 3, and the heat exchange pipe 7 is disposed in the water tank 10. The organic waste 2 is heated through the water. In other words, the organic waste 2 is indirectly heated by heating the water in the water tank 10. The water tank 10 is locally disposed in the methane fermentation tank 3.

以上により、熱媒たる温水から熱交換を受けて先ず水タンク１０内の水が加温され、この加温された水タンク１０内の水により有機性廃棄物２が加温されてメタン発酵が効率的に行われることになる。また、熱交換パイプ７は水タンク１０内の水に埋没するため、有機性廃棄物２に起因する腐食の影響を受けない。なお、熱交換パイプ７のパイプ材としては、銅管、アルミニウム管、ステンレス管等が適用される。また、循環させる温水の温度は使用環境により適宜に設定される。   As described above, the water in the water tank 10 is first heated by receiving heat exchange from the hot water as the heat medium, and the organic waste 2 is heated by the heated water in the water tank 10 to perform methane fermentation. It will be done efficiently. Further, since the heat exchange pipe 7 is buried in the water in the water tank 10, it is not affected by the corrosion caused by the organic waste 2. In addition, as a pipe material of the heat exchange pipe 7, a copper pipe, an aluminum pipe, a stainless steel pipe, etc. are applied. In addition, the temperature of the hot water to be circulated is appropriately set depending on the use environment.

従来のように、加温槽を介して有機性廃棄物２を加温する方法に比べると、本発明の熱交換パイプ７はメタン発酵槽３の内部において局所的に配設される構造となることから、加温の立ち上がり時においては有機性廃棄物２全体の温度上昇に若干の遅れが生じる。しかしながら、例えば一軒〜数軒の酪農家における家畜のふん尿処理を対象とする程度に容量の小さいメタン発酵槽３の場合には、この温度上昇の遅れもさほど影響するものではなく、満足のいくメタン発酵がなされるものである。また、例えば熱交換パイプ７を幾重にわたって襞状に屈曲形成するなど、メタン発酵槽３内における配管距離をかせぐことで有機性廃棄物２全体の温度上昇率を高めることができる。   As compared with the conventional method of heating the organic waste 2 through the heating tank, the heat exchange pipe 7 of the present invention has a structure that is locally disposed inside the methane fermentation tank 3. For this reason, there is a slight delay in the temperature rise of the entire organic waste 2 at the start of heating. However, for example, in the case of the methane fermenter 3 having a capacity small enough to handle livestock excreta treatment in one to several dairy farmers, this delay in temperature rise does not affect so much and is satisfactory. Methane fermentation is performed. Moreover, the rate of temperature increase of the organic waste 2 as a whole can be increased by increasing the piping distance in the methane fermentation tank 3 by, for example, bending the heat exchange pipe 7 into a bowl shape over several layers.

このように、加温手段４としてメタン発酵槽３内に埋没するように配設され、温水が循環する熱交換パイプ７から構成すれば、別途に加温槽を設ける必要もなく簡易な構造となるので、経済的な装置となり、またコンパクトな装置となるので設置において省スペース化が図れる。また、メタン発酵槽３内において有機性廃棄物に埋没するように水タンク１０を形成し、熱交換パイプ７をこの水タンク１０内に配設して、水タンク１０内の水を介して有機性廃棄物を加温する構成とすれば、簡易な構造にて熱交換パイプ７の腐食を防止できる。   Thus, if it comprises the heat exchange pipe 7 which is arrange | positioned so that it may be buried in the methane fermentation tank 3 as the heating means 4, and warm water circulates, it is not necessary to provide a separate heating tank and has a simple structure. As a result, it becomes an economical device and a compact device, so that space can be saved in installation. Further, the water tank 10 is formed so as to be buried in the organic waste in the methane fermentation tank 3, and the heat exchange pipe 7 is disposed in the water tank 10, and the organic matter is passed through the water in the water tank 10. If it is set as the structure which heats a property waste, the corrosion of the heat exchange pipe 7 can be prevented with a simple structure.

そして、温水の供給源として、汎用性に優れた循環式温水ボイラ（ボイラ８）を利用することによって、装置の経済性をさらに高めることができる。循環式温水ボイラとしては、灯油、プロパンガス、都市ガス等の汎用燃料を燃料とするものが各種知られているが、特に都市部から離れた場所に点在する酪農家では、浴槽や台所の給湯用として灯油或いはプロパンガスを燃料とする循環式温水ボイラを既に備えていることも多い。したがって、この場合、前記熱交換パイプ７内を循環させる温水の供給源として既存の循環式温水ボイラを利用できるため、メタン発酵装置１に関する初期投資も低く抑えられる。   And the economical efficiency of an apparatus can further be improved by utilizing the circulation type hot water boiler (boiler 8) excellent in versatility as a supply source of warm water. Various types of circulating hot water boilers are known that use fuels such as kerosene, propane gas, and city gas as fuel. Especially in dairy farms that are scattered from urban areas, In many cases, a circulating hot water boiler using kerosene or propane gas as fuel is already provided for hot water supply. Therefore, in this case, since an existing circulating hot water boiler can be used as a hot water supply source for circulating the heat exchange pipe 7, the initial investment for the methane fermentation apparatus 1 can be kept low.

また、図２にも示すように、メタンの発生量が少ない有機性廃棄物２の加温初期時においては、灯油やプロパンガス等の汎用燃料によりボイラ８を作動させ、有機性廃棄物２が加温されたことによってメタン発酵槽３内で所定量のメタンが発生した時点で、燃料をこのメタンに切り替えてボイラ８を作動させる構成とすれば、メタン発酵装置１のランニングコストを低減できることとなる。   In addition, as shown in FIG. 2, in the initial heating stage of the organic waste 2 with a small amount of methane generated, the boiler 8 is operated with a general-purpose fuel such as kerosene or propane gas, When a predetermined amount of methane is generated in the methane fermentation tank 3 by heating, if the fuel is switched to this methane and the boiler 8 is operated, the running cost of the methane fermentation apparatus 1 can be reduced. Become.

この切り替えは、例えばメタンの排出配管に設けた圧力計を目視することにより切り替え弁を手動操作する方法であっても良いし、自動制御によるものでも良い。なお、図２ではそれぞれ別体のボイラ８として示しているが、場合によっては汎用燃料とメタンの両方を燃料として作動可能な単体のボイラ８としても良い。   This switching may be, for example, a method of manually operating the switching valve by visually observing a pressure gauge provided on the methane discharge pipe, or may be based on automatic control. In FIG. 2, the boilers 8 are shown as separate boilers 8. However, in some cases, a single boiler 8 that can operate using both general-purpose fuel and methane as fuel may be used.

また、温水の供給源としては図３に示すように、循環式太陽熱温水器９を利用することも可能である。したがって、酪農家が浴槽や台所の給湯用として循環式太陽熱温水器９を既に備えている場合には、メタン発酵装置１に関する初期投資が低く抑えられることとなる。   Further, as shown in FIG. 3, a circulating solar water heater 9 can be used as a hot water supply source. Therefore, when the dairy farmer is already equipped with the circulation type solar water heater 9 for hot water supply for a bathtub or kitchen, the initial investment for the methane fermentation apparatus 1 can be kept low.

なお、この場合も、メタンの発生量が少ない有機性廃棄物２の加温初期時においては、循環式太陽熱温水器９により温水を供給し、有機性廃棄物２が加温されたことによってメタン発酵槽３内で所定量のメタンが発生した時点で、メタンを燃料としたボイラ８によって温水を供給させる構成とすることも可能である。   In this case as well, at the initial stage of warming of the organic waste 2 with a small amount of methane generated, warm water is supplied by the circulating solar water heater 9 and the organic waste 2 is warmed. When a predetermined amount of methane is generated in the fermenter 3, it is possible to supply hot water by the boiler 8 using methane as fuel.

本発明に係るメタン発酵装置の構成フロー図である。It is a composition flow figure of a methane fermentation device concerning the present invention. 循環式温水ボイラ周りの構成フロー図である。It is a composition flow figure around a circulation type hot water boiler. 本発明に係るメタン発酵装置の変形例を示す構成フロー図である。It is a composition flow figure showing the modification of the methane fermentation device concerning the present invention.

符号の説明Explanation of symbols

１ メタン発酵装置
２ 有機性廃棄物
３ メタン発酵槽
４ 加温手段
７ 熱交換パイプ
８ ボイラ（循環式温水ボイラ）
９ 循環式太陽熱温水器
１０ 水タンク DESCRIPTION OF SYMBOLS 1 Methane fermentation apparatus 2 Organic waste 3 Methane fermentation tank 4 Heating means 7 Heat exchange pipe 8 Boiler (circulation type hot water boiler)
9 Circulating solar water heater 10 Water tank

Claims (5)

有機性廃棄物が投入され、該有機性廃棄物を発酵させてメタンを発生させるメタン発酵槽と、該メタン発酵槽内の有機性廃棄物を加温する加温手段と、を備えたメタン発酵装置であって、
前記加温手段は、前記メタン発酵槽内に配設され、温水が循環する熱交換パイプからなることを特徴とするメタン発酵装置。 Methane fermentation comprising: a methane fermentation tank in which organic waste is charged and fermenting the organic waste to generate methane; and a heating means for heating the organic waste in the methane fermentation tank A device,
The said heating means is arrange | positioned in the said methane fermentation tank, and consists of a heat exchange pipe with which warm water circulates, The methane fermentation apparatus characterized by the above-mentioned. 前記メタン発酵槽内において有機性廃棄物に埋没するように水タンクが形成されると共に、前記熱交換パイプは該水タンク内に配設され、
該水タンク内の水を介して有機性廃棄物を加温する構成としたことを特徴とする請求項１に記載のメタン発酵装置。 A water tank is formed so as to be buried in organic waste in the methane fermentation tank, and the heat exchange pipe is disposed in the water tank,
The methane fermentation apparatus according to claim 1, wherein the organic waste is heated through water in the water tank. 前記温水は循環式温水ボイラから供給されることを特徴とする請求項１又は請求項２に記載のメタン発酵装置。   The methane fermentation apparatus according to claim 1 or 2, wherein the hot water is supplied from a circulating hot water boiler. 前記有機性廃棄物の加温初期時においては汎用燃料により前記循環式温水ボイラを作動させ、前記メタン発酵槽内で所定量のメタンが発生した時点で、燃料を前記メタンに切り替えて前記循環式温水ボイラを作動可能に構成したことを特徴とする請求項３に記載のメタン発酵装置。   At the initial stage of heating of the organic waste, the circulating hot water boiler is operated with a general-purpose fuel, and when a predetermined amount of methane is generated in the methane fermentation tank, the fuel is switched to the methane and the circulation type The methane fermentation apparatus according to claim 3, wherein the hot water boiler is configured to be operable. 前記温水は循環式太陽熱温水器から供給されることを特徴とする請求項１又は請求項２に記載のメタン発酵装置。   The methane fermentation apparatus according to claim 1 or 2, wherein the hot water is supplied from a circulating solar water heater.
JP2004010694A 2004-01-19 2004-01-19 Methane fermenter Pending JP2005198618A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2034007A2 (en) 2007-09-04 2009-03-11 Kompogas AG Means for heating a prone, tubular fermenter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2034007A2 (en) 2007-09-04 2009-03-11 Kompogas AG Means for heating a prone, tubular fermenter

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