JP2021013927A - Biogas generating device and biogas electric power generating system using the same - Google Patents

Biogas generating device and biogas electric power generating system using the same Download PDF

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JP2021013927A
JP2021013927A JP2020184959A JP2020184959A JP2021013927A JP 2021013927 A JP2021013927 A JP 2021013927A JP 2020184959 A JP2020184959 A JP 2020184959A JP 2020184959 A JP2020184959 A JP 2020184959A JP 2021013927 A JP2021013927 A JP 2021013927A
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biogas
fermenter
fermentation tank
biomass
methane
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JP6843459B2 (en
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友理 堀江
Yuri Horie
友理 堀江
裕一 濱田
Yuichi Hamada
裕一 濱田
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Zenech Co Ltd
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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

Abstract

To provide a biogas generating device for generating biogas such as methane gas using biomass resource such as livestock excreta for a raw material, and a biogas electric power generating system using the same.SOLUTION: The biogas generating device for generating methane gas using biomass resource for a raw material includes a fermentation tank into which the liquefied biomass resource is supplied and in which methane gas is generated by anaerobic fermentation at predetermined temperature. Treatment comprising drawing out a part of the biomass resource stored in the fermentation tank from a lower end of the central portion of the fermentation tank and returning it into the fermentation tank again is carried out at a prescribed time interval.SELECTED DRAWING: Figure 1

Description

この発明はバイオガス生成装置とこれを用いたバイオガス発電システムに関する。 The present invention relates to a biogas generator and a biogas power generation system using the same.

家畜糞尿や食品残渣などのバイオマス資源を原料に用いてメタンガスなどのバイオガスを生成する装置については従来から多くの提案が行われている（例えば、特許文献１、２、３）。 Many proposals have been made conventionally for devices that generate biogas such as methane gas using biomass resources such as livestock manure and food residues as raw materials (for example, Patent Documents 1, 2 and 3).

そして、生成したバイオガスを発電（バイオマス発電）に利用する技術についても従来から種々の提案が行われている（例えば、特許文献４、５）。 And various proposals have been made conventionally about the technique of using the generated biogas for power generation (biomass power generation) (for example, Patent Documents 4 and 5).

特開２００１−３４７２４７号公報Japanese Unexamined Patent Publication No. 2001-347247 特開２００７−８３４号公報Japanese Unexamined Patent Publication No. 2007-834 特開２００８−２９００４１号公報JP-A-2008-2900041 特開２００２−２１６８２９号公報JP-A-2002-216829 特開２００３−１２９８号公報Japanese Unexamined Patent Publication No. 2003-1298

この発明は、家畜糞尿などのバイオマス資源を原料に用いてメタンガスなどのバイオガスを生成するバイオガス生成装置とこれを用いたバイオガス発電システムを提供することを目的にしている。 An object of the present invention is to provide a biogas generator that uses biomass resources such as livestock manure as a raw material to generate biogas such as methane gas, and a biogas power generation system using the biogas generator.

［１］
バイオマス資源を原料に用いてメタンガスを生成するバイオガス生成装置であって、
液状化した前記バイオマス資源が投入され所定の温度において嫌気的発酵によりメタンガスを生成する発酵槽を備えていて、
前記発酵槽の中央部下端から前記発酵槽内に収容されている前記バイオマス資源の一部が引き抜かれ、それが、再度、前記発酵槽内に戻される処理が、あらかじめ定めてある時間間隔で行われる
バイオガス生成装置。 [1]
A biogas generator that uses biomass resources as a raw material to generate methane gas.
It is equipped with a fermenter in which the liquefied biomass resource is input and methane gas is generated by anaerobic fermentation at a predetermined temperature.
A part of the biomass resource contained in the fermenter is withdrawn from the lower end of the central portion of the fermenter, and the biomass resource is returned to the fermenter again at predetermined time intervals. Biogas generator.

［２］
前記発酵槽内に収容されている前記バイオマス資源の中に埋没する位置に配置される複数の撹拌ミキサーと、前記発酵槽内に収容されている前記バイオマス資源を前記発酵槽内で所定の温度に維持する複数の温度保持器が前記発酵槽内に配備されている［１］のバイオガス生成装置。 [2]
A plurality of stirring mixers arranged at positions buried in the biomass resources housed in the fermenter and the biomass resources housed in the fermenter are brought to a predetermined temperature in the fermenter. The biogas generator according to [1], wherein a plurality of temperature cages to be maintained are provided in the fermenter.

［３］
前記バイオガス生成装置で生成したメタンガスを用いてバイオマス発電が行われ、当該バイオマス発電の過程で発生する熱量を利用して加温することで温度調整した加温水が前記温度保持器に供給される［２］のバイオガス生成装置を用いたバイオガス発電システム。 [3]
Biomass power generation is performed using the methane gas generated by the biogas generator, and heated water whose temperature is adjusted by heating using the amount of heat generated in the process of the biomass power generation is supplied to the temperature cage. A biogas power generation system using the biogas generator of [2].

この発明によれば、家畜糞尿などのバイオマス資源を原料に用いてメタンガスなどのバイオガスを生成するバイオガス生成装置とこれを用いたバイオガス発電システムを提供することができる。 According to the present invention, it is possible to provide a biogas generator that uses biomass resources such as livestock manure as a raw material to generate biogas such as methane gas, and a biogas power generation system using the biogas generator.

この発明の一実施形態に係るバイオガス生成装置が用いられているこの発明のバイオガス発電システムの一実施形態の概略構成を説明する図。The figure explaining the schematic structure of one Embodiment of the biogas power generation system of this invention which uses the biogas generator which concerns on one Embodiment of this invention. この発明の一実施形態に係るバイオガス生成装置が用いられているこの発明のバイオガス発電システムによる処理工程の一例を説明する概念図。The conceptual diagram explaining an example of the processing process by the biogas power generation system of this invention which uses the biogas generator which concerns on one Embodiment of this invention. この発明の一実施形態に係るバイオガス生成装置に採用されている発酵槽の一例を表す平面図。The plan view which shows an example of the fermenter adopted in the biogas generator which concerns on one Embodiment of this invention. 図３におけるＡ−Ａ部の一部を省略した断面図。FIG. 3 is a cross-sectional view in which a part of part AA in FIG. 3 is omitted. 図４におけるＢ−Ｂ部の一部を省略した断面図。FIG. 4 is a cross-sectional view in which a part of BB portion in FIG. 4 is omitted. （ａ）この発明の一実施形態に係るバイオガス生成装置の発酵槽内に配備されている温度保持器の概略構成を説明する側面図、（ｂ）温度保持器内に配備されている温水通過パイプを説明する側面図。(A) A side view for explaining a schematic configuration of a temperature cage installed in a fermenter of a biogas generator according to an embodiment of the present invention, (b) Passing hot water installed in a temperature cage. A side view illustrating the pipe.

以下、添付図面を参照してこの発明の実施形態を説明する。 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

この実施形態のバイオガス生成装置は、家畜糞尿などのバイオマス資源を原料に用いてメタンガスを生成する装置である。 The biogas generator of this embodiment is an apparatus that produces methane gas using biomass resources such as livestock manure as a raw material.

この実施形態のバイオガス生成装置は、図３〜図５に一例が表されている発酵槽１を備えている。以下、この明細書及び図面において、符号１で表される「発酵槽」を「メタン発酵槽」と表すことがある。 The biogas generator of this embodiment includes a fermenter 1 whose example is shown in FIGS. 3 to 5. Hereinafter, in this specification and drawings, the “fermenter” represented by reference numeral 1 may be referred to as “methane fermenter”.

メタン発酵槽１は、家畜糞尿や食品残渣などのバイオマス資源を液状化したものが投入され、所定の温度において嫌気的発酵によりメタンガスを生成する発酵槽である。 The methane fermentation tank 1 is a fermentation tank in which liquefied biomass resources such as livestock manure and food residues are charged to generate methane gas by anaerobic fermentation at a predetermined temperature.

メタン発酵槽１内には、図１図示のように、撹拌ミキサーと、温度保持器が配備されている。 As shown in FIG. 1, a stirring mixer and a temperature cage are provided in the methane fermenter 1.

撹拌ミキサーは、図１図示のように、メタン発酵槽１内に収容されているバイオマス資源の中に埋没する位置に複数配置される。 As shown in FIG. 1, a plurality of stirring mixers are arranged at positions where they are buried in the biomass resources housed in the methane fermenter 1.

複数の撹拌ミキサーが、あらかじめ定めてある時刻に、あらかじめ定めてある長さの時間、一斉に稼働することで、例えば、メタン発酵槽１内に収容されているバイオマス資源が図３において時計回り方向へ所定の範囲で移動する。 By operating a plurality of stirring mixers at a predetermined time and for a predetermined length of time at the same time, for example, the biomass resources contained in the methane fermenter 1 are rotated clockwise in FIG. Move within the specified range.

温度保持器も、図１図示のように、メタン発酵槽１内に複数配置され、メタン発酵槽１内に収容されているバイオマス資源をメタン発酵槽１内で所定の温度に維持する役割を果たしている。 As shown in FIG. 1, a plurality of temperature cages are also arranged in the methane fermentation tank 1, and play a role of maintaining the biomass resources contained in the methane fermentation tank 1 at a predetermined temperature in the methane fermentation tank 1. There is.

このような、家畜糞尿や食品残渣などのバイオマス資源を液状化したものが投入され、所定の温度において嫌気的発酵によりメタンガスを生成する発酵槽や、これを備えたバイオガス生成装置は従来から知られている。 Fermenters that generate methane gas by anaerobic fermentation at a predetermined temperature by adding liquefied biomass resources such as livestock manure and food residues, and biogas generators equipped with these have been known in the past. Has been done.

この実施形態のバイオガス生成装置は、メタン発酵槽１の中央部下端からメタン発酵槽１内に収容されているバイオマス資源の一部が引き抜かれ、それが、再度、メタン発酵槽内１に戻される処理が所定の時間間隔で行われる形態になっている。 In the biogas generator of this embodiment, a part of the biomass resources contained in the methane fermentation tank 1 is extracted from the lower end of the central portion of the methane fermentation tank 1, and the biomass resources are returned to the methane fermentation tank 1 again. The processing is performed at predetermined time intervals.

図示の実施形態では、メタン発酵槽１は、中央部下端に下端開口部３を備えており、メタン発酵槽１の下端側の底面４は下端開口部３に向かって下り傾斜する構造になっている（図３、図４）。 In the illustrated embodiment, the methane fermentation tank 1 is provided with a lower end opening 3 at the lower end of the central portion, and the bottom surface 4 on the lower end side of the methane fermentation tank 1 has a structure that is inclined downward toward the lower end opening 3. (Fig. 3, Fig. 4).

下端開口部３には引き抜き配管５の基端開口が臨んでいる（図４）。 The base end opening of the pull-out pipe 5 faces the lower end opening 3 (FIG. 4).

引き抜き配管５の先端側には図１図示のように発酵槽引抜電動弁を介してポンプが配備されている。 As shown in FIG. 1, a pump is provided on the tip side of the drawing pipe 5 via a fermenter drawing electric valve.

メタン発酵槽１内で発酵、メタンガス生成が行われている過程におけるあらかじめ定められている時間間隔で、原料投入電動弁が閉にされ、その一方、発酵槽引抜電動弁が開にされ、ポンプが稼働されて、あらかじめ定められている時間、メタン発酵槽１内に収容されているバイオマス資源の一部が引き抜かれ、再度、メタン発酵槽１の開口部２を介して、メタン発酵槽１内に戻される。 The raw material input electric valve is closed at predetermined time intervals in the process of fermentation and methane gas production in the methane fermentation tank 1, while the fermenter extraction electric valve is opened and the pump is operated. After being operated, a part of the biomass resources contained in the methane fermentation tank 1 is extracted for a predetermined time, and again through the opening 2 of the methane fermentation tank 1 into the methane fermentation tank 1. Be returned.

なお、作業者が、メタン発酵槽１内における発酵状況などを目視、等によって把握し、任意のタイミングで、原料投入電動弁を閉にし、発酵槽引抜電動弁を開にしてポンプを稼働し、メタン発酵槽１内に収容されているバイオマス資源の一部を引き抜いて、再度、メタン発酵槽内１に戻す処理を行うようにすることもできる。 In addition, the operator visually grasps the fermentation status in the methane fermentation tank 1, etc., closes the raw material input electric valve, opens the fermenter extraction electric valve, and operates the pump at an arbitrary timing. It is also possible to extract a part of the biomass resources contained in the methane fermentation tank 1 and return the biomass resources to the methane fermentation tank 1 again.

ポンプを稼働してメタン発酵槽１内に収容されているバイオマス資源の一部を引き抜いて、再度、メタン発酵槽内１に戻す処理をあらかじめ定められている長さの時間行うようにすることもできるし、上述したように、作業者が状態を把握しながら、任意の長さの時間行うようにすることもできる。 It is also possible to operate the pump to extract a part of the biomass resources stored in the methane fermenter 1 and return it to the methane fermenter 1 again for a predetermined length of time. It is also possible, and as described above, the operator can perform the operation for an arbitrary length of time while grasping the state.

また、ポンプを稼働する時間の長さを設定して処理を行うのではなく、メタン発酵槽１内から引き抜いて、再度、メタン発酵槽１内に戻すバイオマス資源の量をあらかじめ定めておいて、この量を目安にして、処理を行うこともできる。 Further, instead of setting the length of time for operating the pump for processing, the amount of biomass resources that are pulled out from the methane fermentation tank 1 and returned to the methane fermentation tank 1 is determined in advance. Processing can also be performed using this amount as a guide.

このように、液状化したバイオマス資源が投入され所定の温度において嫌気的発酵によりメタンガスを生成するメタン発酵槽１を備えているバイオガス生成装置で、メタン発酵槽１の中央部下端からメタン発酵槽１内に収容されているバイオマス資源の一部を引き抜き、それを、再度、メタン発酵槽１内に戻す処理を、あらかじめ定めてある時間間隔で行うことにより、効率的・効果的なメタンガス生成を行うことができる。 In this way, the biogas generator is provided with a methane fermentation tank 1 in which liquefied biomass resources are input and methane gas is generated by anaerobic fermentation at a predetermined temperature. The methane fermentation tank is formed from the lower end of the center of the methane fermentation tank 1. Efficient and effective methane gas production is achieved by extracting a part of the biomass resources contained in 1 and returning it to the methane fermenter 1 again at predetermined time intervals. It can be carried out.

なお、メタン発酵槽１に水位計を配備しておき、水位が高すぎるなどの状態になったときに、原料投入電動弁を閉にし、発酵槽引抜電動弁を開にしてポンプを稼働し、メタン発酵槽１内から水分を抜き取り、廃水処理施設に移動させるようにすることもできる。 A water level gauge is installed in the methane fermentation tank 1, and when the water level becomes too high, the raw material input motor valve is closed, the fermenter extraction motor valve is opened, and the pump is operated. It is also possible to remove water from the methane fermentation tank 1 and move it to a wastewater treatment facility.

次に、図１、図２を参照して、この発明の一実施形態に係るバイオガス生成装置が用いられているこの発明のバイオガス発電システムの一実施形態を説明する。 Next, an embodiment of the biogas power generation system of the present invention in which the biogas generator according to the embodiment of the present invention is used will be described with reference to FIGS. 1 and 2.

豚舎などから回収された家畜糞尿が原料槽に収容され、所定の水分供給を行う、等して、液状化したバイオマス資源を調製する。 Livestock manure collected from a piggery or the like is stored in a raw material tank, and a predetermined amount of water is supplied to prepare a liquefied biomass resource.

なお、豚舎などから回収された家畜糞尿でなく、食品残渣などを原料槽に投入して液状化したバイオマス資源を調製することもできるし、家畜糞尿と食品残渣などとを混合して液状化したバイオマス資源を調製することもできる。 It is also possible to prepare liquefied biomass resources by putting food residues, etc. into the raw material tank instead of livestock manure collected from piggery, etc., and liquefied by mixing livestock manure and food residues. Biomass resources can also be prepared.

調製された液状化したバイオマス資源は、原料投入電動弁を開にし（なお、この際、発酵槽引抜電動弁は閉にしている）、流量を把握しながら、ポンプにより、所定量がメタン発酵槽１の開口部２を介してメタン発酵槽１内に投入される。 For the prepared liquefied biomass resource, the raw material input motor valve is opened (at this time, the fermenter extraction motor valve is closed), and the predetermined amount is methane fermenter by the pump while grasping the flow rate. It is charged into the methane fermentation tank 1 through the opening 2 of 1.

メタン発酵槽１内では、温度保持器によりメタン発酵槽１内を所定の温度（３５℃〜４２℃）に維持しながら、嫌気的発酵によりメタンガスが生成される。 In the methane fermentation tank 1, methane gas is produced by anaerobic fermentation while maintaining the inside of the methane fermentation tank 1 at a predetermined temperature (35 ° C. to 42 ° C.) by a temperature cage.

生成されたメタンガスはミストポンプを介してメタン発酵槽１から集められるとともに脱水・脱硫処理が行われてガスホルダーに収容、貯留される。 The generated methane gas is collected from the methane fermenter 1 via a mist pump, dehydrated and desulfurized, and stored and stored in a gas holder.

ガスホルダーに収容、貯留されたメタンガスは、バイオガスジェネレーターに供給され、コンバータなどを介してバイオガス発電が行われる。 The methane gas stored and stored in the gas holder is supplied to the biogas generator, and biogas power generation is performed via a converter or the like.

このような、メタン発酵槽１からのメタンガス収集と脱水・脱硫処理、バイオガスジェネレーターへの供給、コンバータなどを介してのバイオガス発電は従来から行われているものである。 Such biogas power generation via methane gas collection and dehydration / desulfurization treatment from the methane fermentation tank 1, supply to a biogas generator, a converter, and the like has been conventionally performed.

メタン発酵槽１においては、収容されたバイオマス資源が上述したように温度保持器によって所定の温度（３５℃〜４２℃）に維持されながら嫌気的発酵が進行する。 In the methane fermentation tank 1, anaerobic fermentation proceeds while the contained biomass resources are maintained at a predetermined temperature (35 ° C. to 42 ° C.) by the temperature cage as described above.

その過程で、メタン発酵槽１に備えられている複数の撹拌ミキサーが、あらかじめ定めてある時刻に、あらかじめ定めてある長さの時間、一斉に稼働し、メタン発酵槽１内に収容されているバイオマス資源に所定の範囲で移動を生じさせて発酵の促進が図られる。 In the process, a plurality of stirring mixers provided in the methane fermentation tank 1 are simultaneously operated at a predetermined time and for a predetermined length of time, and are housed in the methane fermentation tank 1. Fermentation is promoted by causing the biomass resource to move within a predetermined range.

また、あらかじめ定めてある時間間隔で、原料投入電動弁が閉にされ、その一方、発酵槽引抜電動弁が開にされ、ポンプが稼働されて、あらかじめ定められている時間、メタン発酵槽１内に収容されているバイオマス資源の一部が、メタン発酵槽１の中央部下端に配備されている下端開口部３、引き抜き配管５を介して、引き抜かれ、再度、ポンプ、開口部２を介して、メタン発酵槽１内に戻される処理が行われる。 In addition, the raw material input motor valve is closed at predetermined time intervals, while the fermenter extraction motor valve is opened, the pump is operated, and the methane fermenter 1 is inside the methane fermenter 1 for a predetermined time. A part of the biomass resources stored in the methane fermentation tank 1 is drawn out via the lower end opening 3 and the drawing pipe 5 provided at the lower end of the central portion of the methane fermentation tank 1, and again via the pump and the opening 2. , The process of returning to the methane fermentation tank 1 is performed.

これによって、効率的・効果的なメタンガス生成が行われる。 As a result, efficient and effective methane gas production is performed.

メタン発酵槽１に複数配備されている温度保持器は、この実施形態では、図６図示のように構成されている。図６図示の実施形態では、内部を温水が通過していく温水通過パイプ６が枠体７に支持されて温度保持器が構成されている。 A plurality of temperature cages deployed in the methane fermenter 1 are configured as shown in FIG. 6 in this embodiment. In the embodiment shown in FIG. 6, a hot water passage pipe 6 through which hot water passes is supported by a frame body 7 to form a temperature cage.

温水通過パイプ６は、温度保持器の上部側（図６の上側）に配備されている温水が流入してくる流入口８から螺旋状に鉛直方向下側に向かい、枠体７の下端にあたる鉛直方向下側から温度保持器の上部側（図６の上側）に配備されている流出口９まで直線状に鉛直方向上側に向かって戻る構造になっている。 The hot water passage pipe 6 spirally extends downward in the vertical direction from the inflow port 8 where hot water flows in, which is arranged on the upper side (upper side of FIG. 6) of the temperature cage, and corresponds to the lower end of the frame 7. The structure is such that the temperature returns linearly from the lower side to the upper side of the temperature cage (upper side in FIG. 6) to the outlet 9 arranged in the vertical direction.

温度保持器の上部側（図６の上側）に配備されている温水が流入してくる流入口８から螺旋状に鉛直方向下側に向かう構造にすることで、温水通過パイプ６の外周壁がバイオマス資源に接触する面積を大きくし、発酵中のバイオマス資源の保持温度を効率よく調整できるようにしている。 By making the structure spirally downward in the vertical direction from the inflow port 8 where the hot water flows in, which is arranged on the upper side (upper side in FIG. 6) of the temperature cage, the outer peripheral wall of the hot water passage pipe 6 can be formed. The area in contact with the biomass resource is increased so that the holding temperature of the biomass resource during fermentation can be adjusted efficiently.

上述したように、この実施形態では、バイオガス生成装置で生成したメタンガスを用いて従来から公知の技術を利用してバイオガス発電を行っているが、このバイオガス発電の過程で発生する熱量（例えば、排熱）を利用して加温することで温度調整した加温水を温度保持器に供給するようにできる。 As described above, in this embodiment, biogas power generation is performed using methane gas generated by the biogas generator using a conventionally known technique, but the amount of heat generated in the process of this biogas power generation ( For example, it is possible to supply the temperature-controlled warm water to the temperature cage by heating using (exhaust heat).

図１図示の実施形態では、バイオマス発電の過程で発生する熱量（排熱）を利用して貯湯タンクに収容している水を加温している。 In the embodiment shown in FIG. 1, the amount of heat (exhaust heat) generated in the process of biomass power generation is used to heat the water stored in the hot water storage tank.

そして、加温後の加温水が、図１図示のように、温水循環ポンプを介して温水通過パイプ６の流入口８に供給され、温水通過パイプ６の流出口９から出てきた水が貯湯タンクにリターンされて、ここでまた、バイオガス発電の過程で発生する熱量（排熱）を利用して加温が行われる。 Then, as shown in FIG. 1, the heated water after heating is supplied to the inflow port 8 of the hot water passage pipe 6 via the hot water circulation pump, and the water discharged from the outflow port 9 of the hot water passage pipe 6 is stored as hot water. It is returned to the tank, where heating is also performed using the amount of heat (exhaust heat) generated in the process of biogas power generation.

図１図示のように、メタン発酵槽１と、貯湯タンクとにそれぞれ水温計を設置しておき、水温を把握しながら加温を行うことで、温水通過パイプ６内を流動する温水の温度を調整し、これによって、メタン発酵槽１に収容されて嫌気的発酵が進行しているバイオマス資源の温度を所定の温度（３５℃〜４２℃）に維持することができる。 As shown in FIG. 1, water temperature gauges are installed in the methane fermentation tank 1 and the hot water storage tank, respectively, and the temperature of the hot water flowing in the hot water passage pipe 6 is measured by heating while grasping the water temperature. By adjusting, the temperature of the biomass resource housed in the methane fermentation tank 1 and in which anaerobic fermentation is proceeding can be maintained at a predetermined temperature (35 ° C. to 42 ° C.).

メタン発酵槽１での発酵、メタンガス生成を終えた後にメタン発酵槽１に残った残渣は、固液分離し、固体は堆肥化し、液体は廃水処理施設に移送して排水することができる。 The residue remaining in the methane fermentation tank 1 after the fermentation in the methane fermentation tank 1 and the production of methane gas are completed can be solid-liquid separated, the solid can be composted, and the liquid can be transferred to a wastewater treatment facility for drainage.

以上、添付図面を参照して本発明の実施形態を説明したが本発明はかかる実施形態に限定されるものではなく、特許請求の範囲の記載から把握される技術的範囲において種々に変更可能である。 Although the embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such an embodiment and can be variously changed within the technical scope grasped from the description of the scope of claims. is there.

例えば、図１では、メタン発酵槽１が１個だけ示されているが、メタン発酵槽１複数個配備し、複数個のメタン発酵槽１で同時並行的に、あるいは、時間差をおいて同時並行的に、液状化したバイオマス資材の発酵と、それによるメタンガスの生成を行う実施形態にすることができる。 For example, in FIG. 1, only one methane fermentation tank 1 is shown, but a plurality of methane fermentation tanks 1 are provided, and a plurality of methane fermentation tanks 1 are simultaneously paralleled or at different times. Therefore, it can be made into an embodiment in which liquefied biomass material is fermented and methane gas is produced by the fermentation.

１ メタン発酵槽
２ メタン発酵槽の開口部
３ メタン発酵槽の下端開口部
４ メタン発酵槽の底面
５ 引き抜き配管
６ 温水通過パイプ
７ 温度保持器の枠体
８ 流入口
９ 流出口 1 Methane fermenter 2 Opening of methane fermenter 3 Opening of lower end of methane fermenter 4 Bottom of methane fermenter 5 Pull-out pipe 6 Hot water passage pipe 7 Temperature cage frame 8 Inflow port 9 Outlet

Claims (3)

バイオマス資源を原料に用いてメタンガスを生成するバイオガス生成装置であって、
液状化した前記バイオマス資源が投入され所定の温度において嫌気的発酵によりメタンガスを生成する発酵槽を備えていて、
前記発酵槽の中央部下端から前記発酵槽内に収容されている前記バイオマス資源の一部が引き抜かれ、それが、再度、前記発酵槽内に戻される処理が、あらかじめ定めてある時間間隔で行われる
バイオガス生成装置。 A biogas generator that uses biomass resources as a raw material to generate methane gas.
It is equipped with a fermenter in which the liquefied biomass resource is input and methane gas is generated by anaerobic fermentation at a predetermined temperature.
A part of the biomass resource contained in the fermenter is withdrawn from the lower end of the central portion of the fermenter, and the biomass resource is returned to the fermenter again at predetermined time intervals. Biogas generator. 前記発酵槽内に収容されている前記バイオマス資源の中に埋没する位置に配置される複数の撹拌ミキサーと、前記発酵槽内に収容されている前記バイオマス資源を前記発酵槽内で所定の温度に維持する複数の温度保持器が前記発酵槽内に配備されている請求項１記載のバイオガス生成装置。 A plurality of stirring mixers arranged at positions buried in the biomass resources housed in the fermenter and the biomass resources housed in the fermenter are brought to a predetermined temperature in the fermenter. The biogas generator according to claim 1, wherein a plurality of temperature cages to be maintained are provided in the fermenter. 前記バイオガス生成装置で生成したメタンガスを用いてバイオマス発電が行われ、当該バイオマス発電の過程で発生する熱量を利用して加温することで温度調整した加温水が前記温度保持器に供給される請求項２記載のバイオガス生成装置を用いたバイオガス発電システム。 Biomass power generation is performed using the methane gas generated by the biogas generator, and heated water whose temperature is adjusted by heating using the amount of heat generated in the process of the biomass power generation is supplied to the temperature cage. A biogas power generation system using the biogas generator according to claim 2.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128198A (en) * 1982-01-22 1983-07-30 Matsushita Electric Ind Co Ltd Method and device for methane fermentation
JPS5955397A (en) * 1982-09-24 1984-03-30 Kubota Ltd Operating method of digestion tank
JPH06218396A (en) * 1993-01-27 1994-08-09 Mitsubishi Kakoki Kaisha Ltd Anaerobic digesting device and sludge feed method
JP3031824U (en) * 1996-05-29 1996-12-03 株式会社大廣 Methane fermentation processing equipment for chicken manure
JP2006297171A (en) * 2005-04-15 2006-11-02 Kajima Corp Ammonia hindrance-reduced methane fermentation treatment method and apparatus
JP2012187489A (en) * 2011-03-10 2012-10-04 Kikkoman Corp Methane fermentation treatment apparatus for soy sauce lees

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58128198A (en) * 1982-01-22 1983-07-30 Matsushita Electric Ind Co Ltd Method and device for methane fermentation
JPS5955397A (en) * 1982-09-24 1984-03-30 Kubota Ltd Operating method of digestion tank
JPH06218396A (en) * 1993-01-27 1994-08-09 Mitsubishi Kakoki Kaisha Ltd Anaerobic digesting device and sludge feed method
JP3031824U (en) * 1996-05-29 1996-12-03 株式会社大廣 Methane fermentation processing equipment for chicken manure
JP2006297171A (en) * 2005-04-15 2006-11-02 Kajima Corp Ammonia hindrance-reduced methane fermentation treatment method and apparatus
JP2012187489A (en) * 2011-03-10 2012-10-04 Kikkoman Corp Methane fermentation treatment apparatus for soy sauce lees

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