JP2011245383A - Apparatus and method for washing biomass - Google Patents

Apparatus and method for washing biomass Download PDF

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JP2011245383A
JP2011245383A JP2010119243A JP2010119243A JP2011245383A JP 2011245383 A JP2011245383 A JP 2011245383A JP 2010119243 A JP2010119243 A JP 2010119243A JP 2010119243 A JP2010119243 A JP 2010119243A JP 2011245383 A JP2011245383 A JP 2011245383A
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biomass
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JP5142337B2 (en
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Tomomoto Hayakawa
智基 早川
Osamu Tachizawa
穏 立澤
Tomoaki Kurihara
智昭 栗原
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Tsukishima Kikai Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an apparatus and method for washing biomass raw material such as bagasse to efficiently remove foreign matters without lowering the yield of the pith-included raw material.SOLUTION: There is provided an apparatus using a substantially-horizontal treating water tank 16 in which the charging portion 11 for biomass and water is provided at one side, and a stirrer 12 extending from one side to the other side shifts biomass to the other side while stirring is installed, and also there is provided a biomass washing method. An overflow discharge port 18 of water and accompanying biomass is provided at the other side of the treating tank, and a precipitation part 25 which tucks downward and communicates with the inside of the tank is provided below the other side. Further, a discharge conduit extending downward from the lower end of the precipitation part is provided. In the precipitation part 25, the foreign matters mixing in biomass are precipitated, and the precipitated material in the precipitation part 25 is discharged from the discharge conduit.

Description

本発明は、バガス等のバイオマス原料から砂分等の異物を除去する洗浄装置及び洗浄方法に関するものである。   The present invention relates to a cleaning apparatus and a cleaning method for removing foreign substances such as sand from biomass materials such as bagasse.

バガス、麦わら、稲わら、パーム残渣等のバイオマスは、家畜飼料として利用されるほか、アルコール等の工業原料としても使用される（特許文献１）。
特にバガスには砂分等の異物が混入しており、これをアルコール等の工業原料として使用する場合、処理工程の初期において洗浄により異物を除去する必要がある。
従来、このようなバイオマス原料の洗浄は、バイオマスに水を加えて撹拌し、砂分等を含む繊維質の絡まりをほぐす撹拌洗浄工程、スラリー化したバイオマス原料の繊維質と異物をスクリーン、トロンメル等で分離する異物除去工程によって行われてきた。しかし、このようにバイオマス原料の大きさで分級する方法では、特に短繊維（ピス）が砂分等と共に除去されてしまう。アルコール発酵の原料等として使用される際には、バイオマス原料は繊維長に関らず利用可能であるため、ピスも効率的に回収できる方法が望まれる。 Biomass such as bagasse, wheat straw, rice straw, and palm residue is used not only as livestock feed but also as an industrial raw material such as alcohol (Patent Document 1).
In particular, foreign substances such as sand are mixed in bagasse, and when this is used as an industrial raw material such as alcohol, it is necessary to remove the foreign substances by washing at the initial stage of the treatment process.
Conventionally, such biomass raw materials are washed by adding water to the biomass and agitating it to agitate and entangle the fibers including sand and the like. It has been carried out by a foreign matter removing step that is separated at the bottom. However, in this method of classifying by the size of the biomass raw material, particularly short fibers (pis) are removed together with sand and the like. When used as a raw material for alcohol fermentation or the like, since a biomass raw material can be used regardless of the fiber length, a method capable of efficiently recovering pith is desired.

特開２００６−６８６０６号公報JP 2006-68606 A

本発明が解決しようとする主たる課題は、バガス等のバイオマス原料の洗浄において、効率的に異物を除去し、かつ原料を高い歩留まりをもって回収する装置及び方法を提供することにある。   The main problem to be solved by the present invention is to provide an apparatus and a method for efficiently removing foreign substances and recovering raw materials with a high yield in washing biomass raw materials such as bagasse.

この課題を解決した本発明は、次のとおりである。
＜請求項１記載の発明＞
実質的に水平の処理水槽の一方側にその処理水槽内へのバイオマスの投入部が設けられ、前記処理水槽内への水の投入部、並びに前記処理水槽内に一方側から他方側に延在してバイオマスを撹拌しつつ他方側に移行させる撹拌手段が設けられ、
前記処理水槽の他方側に水及びこれに同伴するバイオマスのオーバーフロー排出口を形成し、
前記処理水槽の他方側の下方に前記処理水槽内と連通する、下窄まりの沈降分離部が設けられ、前記沈降分離部の下端から下方に延びる排出管路が設けられ、前記沈降分離部においてバイオマスに混入する異物を沈降分離させ、前記排出管路より前記沈降分離部における沈降分離物を排出するようにしたことを特徴とするバイオマスの洗浄装置。 The present invention that has solved this problem is as follows.
<Invention of Claim 1>
A biomass input section into the treated water tank is provided on one side of the substantially horizontal treated water tank, and the water input section into the treated water tank, and extends from one side to the other side in the treated water tank. And a stirring means for transferring the biomass to the other side while stirring the biomass is provided,
Forming an overflow outlet for water and biomass accompanying it on the other side of the treated water tank,
In the lower part of the treated water tank, a constricted sedimentation separation part communicating with the inside of the treated water tank is provided, and a discharge pipe extending downward from the lower end of the sedimentation separation part is provided, in the sedimentation separation part An apparatus for cleaning biomass, wherein foreign matter mixed in biomass is settled and separated, and the sediment separated in the sedimentation separation section is discharged from the discharge pipe.

（作用効果）
前記処理水槽内に投入されたバイオマスは、撹拌手段によって撹拌されつつ一方側から他方側に移行される。この過程で、バイオマスから砂分などの異物が分離される。
他方側に移行したバイオマスは、オーバーフロー排出口から排出される。バイオマスの一部の短繊維分（ピス）が撹拌手段による移行過程で本体から分離したとしても、オーバーフローによって排出するようにしたので、短繊維分（ピス）を異物側に移行させて廃棄することが少なくなる。
本発明においては、洗浄と異物分離とを一つの装置で行なうことにより、簡易な構成で省スペース化を図りつつ安価な装置であっても、異物分離効率に優れたものとすることを狙いとしている。
バイオマスと分離した異物は比重が重いので下方に沈降する。そこで、処理水槽の他方側の下方に前記処理水槽内と連通する下窄まりの沈降分離部において重い異物のみを集合させて排出管路から排出する。 (Function and effect)
The biomass charged into the treated water tank is transferred from one side to the other side while being stirred by the stirring means. In this process, foreign substances such as sand are separated from the biomass.
The biomass transferred to the other side is discharged from the overflow outlet. Even if some short fibers (pis) of biomass are separated from the main body during the transition process by the stirring means, they are discharged by overflow, so the short fibers (pis) are transferred to the foreign matter side and discarded. Less.
In the present invention, by performing cleaning and foreign matter separation with a single device, the aim is to achieve excellent foreign matter separation efficiency even with an inexpensive device while saving space with a simple configuration. Yes.
The foreign matter separated from the biomass has a heavy specific gravity and sinks downward. Therefore, only heavy foreign matters are gathered and discharged from the discharge pipe at the lower sedimentation portion of the constriction communicating with the inside of the treated water tank below the other side of the treated water tank.

＜請求項２記載の発明＞
前記排出管路の上部に上部排出開閉弁及び下部に下部排出開閉弁がそれぞれ設けられ、上部排出開閉弁及び下部排出開閉弁がこの順に間欠的に開閉することにより、前記沈降分離物を排出する、請求項１記載のバイオマスの洗浄装置。 <Invention of Claim 2>
An upper discharge on-off valve and a lower discharge on-off valve are provided above and below the discharge pipe, respectively, and the upper discharge on-off valve and the lower discharge on-off valve are opened and closed intermittently in this order to discharge the sedimentation separation. The apparatus for cleaning biomass according to claim 1.

（作用効果）
沈降分離部における沈降分離物を、適宜のサイクルで排出させ、処理水槽内の水を可能な限り抜かずに、かつ排出を確実に行なわせるために、上部排出開閉弁及び下部排出開閉弁のこの順の間欠的開閉によって、沈降分離部における異物（沈降分離物）を排出する。 (Function and effect)
In order to ensure that the sediment separated in the sedimentation separation section is discharged in an appropriate cycle so that the water in the treated water tank is not drained as much as possible, and the drain is reliably discharged. Foreign matter (sedimented separation) in the sedimentation separation unit is discharged by intermittent intermittent opening and closing.

＜請求項３記載の発明＞
前記沈降分離部の下部または前記排出管路の上部排出開閉弁より上方、並びに前記排出管路の上部排出開閉弁と下部排出開閉弁との間にそれぞれ流体の注入路を連結し、上方及び下方の両方、若しくは上方または下方のいずれか一方の注入路より流体を注入する、請求項２に記載のバイオマスの洗浄装置。 <Invention of Claim 3>
A fluid injection path is connected to the lower part of the sedimentation separation unit or above the upper discharge on-off valve of the discharge pipe and between the upper discharge on-off valve and the lower discharge on-off valve of the discharge pipe, respectively. The biomass cleaning apparatus according to claim 2, wherein the fluid is injected from both of the above, or from either the upper or lower injection path.

（作用効果）
繊維分の一部が沈降分離部内に入り込み滞留したり、排出管路から異物と共に排出されることがある。
そこで、沈降分離部の下部または排出管路の上部排出開閉弁より上方に流体の注入路を設け、ここから流体（たとえば水や空気）を好ましくは上向きに流出させることにより、沈降分離部に沈降した又は沈降しようとする繊維分を浮上させることにより、排出管路から異物と共に排出される割合を減少させることができる。
また、排出管路の上部排出開閉弁と下部排出開閉弁との間に流体の注入路を連結し、流体を注入することにより、上部排出開閉弁及び下部排出開閉弁を、この順で間欠的に開閉させることによって、沈降分離部における異物（沈降分離物）を排出する際に、流体の注入によって排出を確実に行なわせることができる。 (Function and effect)
A part of the fiber may enter and stay in the sedimentation separation part or may be discharged together with foreign matter from the discharge pipe.
Therefore, a fluid injection path is provided below the sedimentation separation section or above the upper discharge on-off valve of the drainage pipe, and the fluid (for example, water or air) is preferably flowed upward from here to settle into the sedimentation separation section. By raising the fibers that have been or are about to settle, the rate of discharge along with foreign matter from the discharge line can be reduced.
In addition, by connecting a fluid injection path between the upper discharge on-off valve and the lower discharge on-off valve of the discharge pipe and injecting fluid, the upper discharge on-off valve and the lower discharge on-off valve are intermittently connected in this order. When the foreign matter (sedimented separation product) in the sedimentation separation unit is ejected, the fluid can be reliably ejected by injecting the fluid.

＜請求項４記載の発明＞
前記撹拌手段が連続式２軸パドルミキサーである、請求項１〜３のいずれか１項に記載のバイオマスの洗浄装置。 <Invention of Claim 4>
The biomass washing apparatus according to any one of claims 1 to 3, wherein the stirring means is a continuous biaxial paddle mixer.

（作用効果）
撹拌手段を連続式２軸パドルミキサーとすることで、バイオマスの撹拌と移送を円滑に行なわせることが可能となる。その結果、異物の分離及び移送滞留時間が短くなるので、繊維質への水の浸透、それに伴う繊維質の沈降を軽減することができる。 (Function and effect)
By using a continuous biaxial paddle mixer as the stirring means, it becomes possible to smoothly stir and transfer biomass. As a result, the separation and transfer residence time of the foreign matter is shortened, so that the penetration of water into the fiber and the accompanying fiber sedimentation can be reduced.

＜請求項５記載の発明＞
実質的に水平の処理水槽の一方側にその処理水槽内へのバイオマスの投入部が設けられ、前記処理水槽内への水の投入部、並びに前記処理水槽内に一方側から他方側に延在してバイオマスを撹拌しつつ他方側に移行させる撹拌手段を設けた装置を使用し、
前記撹拌手段によって、バイオマスを撹拌しつつ一方側から他方側に移行し、その過程で異物をバイオマスから分離し、
バイオマスは、前記処理水槽の他方側に形成されたオーバーフロー排出口から、水と共にオーバーフローによって排出し、
前記処理水槽の他方側の下方に前記処理水槽内と連通する、下窄まりの沈降分離部内に異物を集積させ、前記沈降分離部においてバイオマスに混入する異物を沈降分離させ、
前記沈降分離部の下端から下方に延びる排出管路が設けられ、前記搬出管路より前記沈降分離部における沈降分離物を排出することを特徴とするバイオマスの洗浄方法。 <Invention of Claim 5>
A biomass input section into the treated water tank is provided on one side of the substantially horizontal treated water tank, and the water input section into the treated water tank, and extends from one side to the other side in the treated water tank. And using a device provided with stirring means to shift the biomass to the other side while stirring the biomass,
By the agitation means, while shifting the biomass from one side to the other while stirring the biomass, in the process to separate foreign substances from the biomass,
Biomass is discharged from the overflow discharge port formed on the other side of the treated water tank by overflowing with water,
The foreign matter is accumulated in the sedimentation part of the lower constriction that communicates with the inside of the treatment water tank below the other side of the treatment water tank, and the foreign matter mixed in the biomass in the sedimentation separation part is settled and separated.
A biomass washing method, characterized in that a discharge pipe extending downward from a lower end of the sedimentation separation section is provided, and sedimentation separation in the sedimentation separation section is discharged from the carry-out pipeline.

本発明によれば、バガス等のバイオマス原料の洗浄において、効率的に異物を除去し、かつ原料を高い歩留まりをもって回収することができる。   ADVANTAGE OF THE INVENTION According to this invention, in washing | cleaning of biomass raw materials, such as bagasse, a foreign material can be removed efficiently and a raw material can be collect | recovered with a high yield.

バイオマス処理工程のフロー図である。It is a flowchart of a biomass treatment process. 本発明に係るバイオマス洗浄装置の一例の正面図である。It is a front view of an example of the biomass washing | cleaning apparatus which concerns on this invention. 本発明に係るバイオマス洗浄装置の一例の上面図である。It is a top view of an example of the biomass washing | cleaning apparatus which concerns on this invention. 本発明に係るバイオマス洗浄装置の一例の断面図である。（Ａ）図３のＡ−Ａ断視図、（Ｂ）図３のＢ−Ｂ断視図。It is sectional drawing of an example of the biomass washing | cleaning apparatus which concerns on this invention. (A) AA sectional view of FIG. 3, (B) BB sectional view of FIG.

図１に、バイオマス処理工程の概略を示す。バガス等のバイオマスは、洗浄工程により、砂、小石等の異物と分離され、濾過工程により洗浄工程で添加された水分の多くが除去される。濾過後のバイオマスは、スクリューフィーダー、ピストンフィーダー等の輸送手段で輸送され、加水分解工程に供される。加水分解工程では、バイオマスの主成分であるセルロースの加水分解による糖化が行われる。糖化された原料は、さらに発酵によりエタノール等の有機燃料や有機酸等に加工される。本発明は、上記工程のうち、洗浄工程に係る装置及び方法に関するものである。   FIG. 1 shows an outline of the biomass treatment process. Biomass such as bagasse is separated from foreign substances such as sand and pebbles by the washing process, and much of the water added in the washing process is removed by the filtration process. The filtered biomass is transported by a transportation means such as a screw feeder or a piston feeder, and is subjected to a hydrolysis step. In the hydrolysis step, saccharification is performed by hydrolysis of cellulose, which is the main component of biomass. The saccharified raw material is further processed into an organic fuel such as ethanol or an organic acid by fermentation. The present invention relates to an apparatus and a method related to a cleaning process among the above processes.

本発明におけるバイオマスとは、バガス、麦わら、稲わら、パーム残渣、コーンストーバー、パーム椰子残渣、キャッサバ残渣、木片、木質廃材、ジュート、ケナフ、古紙等のソフトバイオマスを指すものとする。具体的には、表１に示す性質のバイオマスについて、特に好適に本発明を適用することができる。   The biomass in the present invention refers to soft biomass such as bagasse, wheat straw, rice straw, palm residue, corn stover, palm eggplant residue, cassava residue, piece of wood, wood waste, jute, kenaf, and waste paper. Specifically, the present invention can be particularly preferably applied to biomass having the properties shown in Table 1.

Figure 2011245383
Figure 2011245383

図２，３，４に本発明に係るバイオマス洗浄装置の一例を示す。水及びバイオマスは、バイオマス洗浄装置１の撹拌領域１０に、装置始端側の投入口１１から投入される。水及びバイオマスは別々に投入してもよく、また、予めスクリューミキサー等で混和してから投入してもよい。   2, 3 and 4 show an example of a biomass cleaning apparatus according to the present invention. Water and biomass are introduced into the stirring region 10 of the biomass cleaning apparatus 1 from the inlet 11 on the apparatus start side. Water and biomass may be added separately, or may be added after mixing with a screw mixer or the like in advance.

撹拌領域１０は、パドルミキサー、リボンミキサー、ロッドミキサー等の撹拌手段を備える。特に図示例のような連続式２軸パドルミキサーの使用が、材料の撹拌と同時に搬送もでき、より迅速にバイオマスを異物より分離できるため好ましい。図示例においては、撹拌領域１０に、多数のパドル１３を有するパドルシャフト１２が２本、材料の進行方向と平行に設置されている。各パドルシャフト１２の装置始端側末端には駆動ギア１４を、終端側末端にはテイルローラ１５を有し、駆動ギア１４の回転により、２本のパドルシャフト１２全体が回転する。   The stirring region 10 includes stirring means such as a paddle mixer, a ribbon mixer, and a rod mixer. In particular, the use of a continuous biaxial paddle mixer as shown in the example is preferable because it can be transported simultaneously with the stirring of the material and the biomass can be separated from the foreign matter more quickly. In the illustrated example, two paddle shafts 12 having a large number of paddles 13 are installed in the agitation region 10 in parallel with the traveling direction of the material. Each paddle shaft 12 has a drive gear 14 at the start end of the apparatus and a tail roller 15 at the end of the end, and the rotation of the drive gear 14 rotates the entire two paddle shafts 12.

撹拌領域に投入された水及びバイオマスは、撹拌槽１６内で撹拌混合されながら、装置終端側へ水平移動する。水流と撹拌作用でバイオマス中の繊維質が解されることにより、繊維質と繊維質内部に混入していた異物とが分離される。本発明に係るバイオマスの繊維質は比重が低いため水表面に浮揚する一方、異物は一般に比重が高いため、装置底部に向かって移動する。バイオマス及び繊維質は撹拌槽幅方向中央部分では、パドルにより生じた水流の影響を受けにくく、繊維質の離解が効率よく行われない傾向がある。そのため、当該部分に障壁１７を設け、当該部分の水流に複雑性を与える構成とすることが好ましい（図４（Ａ））。水表面に浮揚した繊維質は、装置終端の側部に備えたオーバーフローシュート１８より、装置外に排出され、脱水工程に送られる（図４（Ｂ））。   The water and biomass charged into the agitation region move horizontally to the apparatus end side while being agitated and mixed in the agitation tank 16. When the fiber in the biomass is unwound by the water flow and the stirring action, the fiber and the foreign matter mixed in the fiber are separated. Since the biomass fiber according to the present invention has a low specific gravity, it floats on the surface of the water. On the other hand, foreign matter generally has a high specific gravity, and therefore moves toward the bottom of the apparatus. Biomass and fiber are less likely to be affected by the water flow generated by the paddles at the central portion in the stirring tank width direction, and there is a tendency that fiber disaggregation is not performed efficiently. For this reason, it is preferable to provide a configuration in which a barrier 17 is provided in the portion and the water flow in the portion is complicated (FIG. 4A). The fiber floated on the water surface is discharged out of the apparatus from the overflow chute 18 provided at the side of the terminal of the apparatus, and sent to the dehydration process (FIG. 4B).

撹拌領域で繊維質より分離された砂分等の異物は、装置底部に沈降しながら水流に乗って比重分離領域２０まで搬送される。異物は、比重分離槽２５底部に向かって沈降し、貯留する。貯留した異物は、上部排出開閉弁２１及び下部排出開閉弁２２を開放することにより排出される。上部排出開閉弁２１及び下部排出開閉弁２２は、装置内の水位を保ち、異物の沈降を促進するために、連続的ではなく、間欠的にこの順に開閉することにより、比重分離槽２５における沈降分離物を排出する。この上部排出開閉弁２１及び下部排出開閉弁２２に替えて、ロータリーバルブを用いてもよい。   Foreign matter such as sand separated from the fiber in the agitation zone is carried to the specific gravity separation zone 20 along the water stream while sinking to the bottom of the apparatus. The foreign matter settles toward the bottom of the specific gravity separation tank 25 and is stored. The stored foreign matter is discharged by opening the upper discharge opening / closing valve 21 and the lower discharge opening / closing valve 22. The upper discharge on-off valve 21 and the lower discharge on-off valve 22 maintain the water level in the apparatus and promote the sedimentation of foreign matter, so that the sedimentation in the specific gravity separation tank 25 is performed intermittently instead of opening and closing in this order. Drain the separation. Instead of the upper discharge on-off valve 21 and the lower discharge on-off valve 22, a rotary valve may be used.

繊維質の多くは、撹拌領域終端側部よりオーバーフローにより排出されるが、一部の繊維質は繊維内部に水分が浸透することにより比重が増加し、異物と共に比重分離領域底部に沈降する。沈降した繊維質は、異物と共に排出され歩留まりを低下させ、また装置底部の抜き出し口や管路の閉塞を生じる要因となる。本発明に係る装置には、装置底部及び管路に水または空気の流体を連続的または間欠的に供給し、水流または気泡により繊維分を浮上させ排出管路から異物と共に排出される割合を減少させると共に閉塞を除去する、底部流体注入手段を設けることが好ましい。装置底部への流体の供給は、上部排出開閉弁２１を閉じた状態で、流体バルブ２３を開放することにより行う。また、管路への流体の供給は、上部排出開閉弁２１を開き、下部排出開閉弁２２を閉じた状態で、流体バルブ２４を開放することにより行う。流体により閉塞を形成した繊維質は離解し、装置内部に押し戻される。さらに、繊維質の一部は流体の上昇流に乗って、装置上部の撹拌領域に達し、撹拌領域の水流に乗ってオーバーフローシュート１８まで送られる。
なお、流体バルブ２３，２４から水を供給する場合、水は後段の濾過工程における濾液を使用してもよい。 Most of the fibers are discharged from the end of the stirring region due to overflow, but the specific gravity of some fibers increases due to the penetration of moisture into the fibers, and settles at the bottom of the specific gravity separation region together with foreign matter. The settled fiber is discharged together with the foreign matter to reduce the yield, and becomes a factor that causes the outlet of the apparatus bottom and the blockage of the pipeline. In the apparatus according to the present invention, water or air fluid is supplied continuously or intermittently to the bottom of the apparatus and the pipe line, and the proportion of fibers discharged by the water or air bubbles is reduced by the water flow or air bubbles. Preferably, a bottom fluid injecting means is provided that allows and removes the blockage. The fluid is supplied to the bottom of the apparatus by opening the fluid valve 23 with the upper discharge opening / closing valve 21 closed. Further, the fluid is supplied to the pipe line by opening the upper discharge on-off valve 21 and opening the fluid valve 24 with the lower discharge on-off valve 22 closed. The fiber that forms the blockage by the fluid is released and pushed back into the apparatus. Furthermore, a part of the fiber rides on the upward flow of the fluid, reaches the stirring area at the upper part of the apparatus, and is sent to the overflow chute 18 along the water flow in the stirring area.
In addition, when supplying water from the fluid valves 23 and 24, you may use the filtrate in a latter filtration process.

１…バイオマス洗浄装置、１０…撹拌領域、１１…投入口、１２…パドルシャフト、１３…パドル、１４…駆動ギア、１５…テイルローラ、１６…撹拌槽、１７…障壁、１８…オーバーフローシューター、２０…比重分離領域、２１…上部排出開閉弁，２２…下部排出開閉弁、２３，２４…注入バルブ、２５…比重分離槽。   DESCRIPTION OF SYMBOLS 1 ... Biomass washing apparatus, 10 ... Stirring zone, 11 ... Loading port, 12 ... Paddle shaft, 13 ... Paddle, 14 ... Drive gear, 15 ... Tail roller, 16 ... Stirring tank, 17 ... Barrier, 18 ... Overflow shooter, 20 ... specific gravity separation region, 21 ... upper discharge on-off valve, 22 ... lower discharge on-off valve, 23, 24 ... injection valve, 25 ... specific gravity separation tank.

本発明は、バガス等のバイオマス原料から砂分等の異物を除去する洗浄装置及び洗浄方法に関するものである。   The present invention relates to a cleaning apparatus and a cleaning method for removing foreign substances such as sand from biomass materials such as bagasse.

バガス、麦わら、稲わら、パーム残渣等のバイオマスは、家畜飼料として利用されるほか、アルコール等の工業原料としても使用される（特許文献１）。
特にバガスには砂分等の異物が混入しており、これをアルコール等の工業原料として使用する場合、処理工程の初期において洗浄により異物を除去する必要がある。
従来、このようなバイオマス原料の洗浄は、バイオマスに水を加えて撹拌し、砂分等を含む繊維質の絡まりをほぐす撹拌洗浄工程、スラリー化したバイオマス原料の繊維質と異物をスクリーン、トロンメル等で分離する異物除去工程によって行われてきた。しかし、このようにバイオマス原料の大きさで分級する方法では、特に短繊維（ピス）が砂分等と共に除去されてしまう。アルコール発酵の原料等として使用される際には、バイオマス原料は繊維長に関らず利用可能であるため、ピスも効率的に回収できる方法が望まれる。 Biomass such as bagasse, wheat straw, rice straw, and palm residue is used not only as livestock feed but also as an industrial raw material such as alcohol (Patent Document 1).
In particular, foreign substances such as sand are mixed in bagasse, and when this is used as an industrial raw material such as alcohol, it is necessary to remove the foreign substances by washing at the initial stage of the treatment process.
Conventionally, such biomass raw materials are washed by adding water to the biomass and agitating it to agitate and entangle the fibers including sand and the like. It has been carried out by a foreign matter removing step that is separated at the bottom. However, in this method of classifying by the size of the biomass raw material, particularly short fibers (pis) are removed together with sand and the like. When used as a raw material for alcohol fermentation or the like, since a biomass raw material can be used regardless of the fiber length, a method capable of efficiently recovering pith is desired.

特開２００６−６８６０６号公報JP 2006-68606 A

本発明が解決しようとする主たる課題は、バガス等のバイオマス原料の洗浄において、効率的に異物を除去し、かつ原料を高い歩留まりをもって回収する装置及び方法を提供することにある。   The main problem to be solved by the present invention is to provide an apparatus and a method for efficiently removing foreign substances and recovering raw materials with a high yield in washing biomass raw materials such as bagasse.

この課題を解決した本発明は、次のとおりである。
＜請求項１記載の発明＞
実質的に水平の処理水槽の一方側にその処理水槽内へのバイオマスの投入部が設けられ、前記処理水槽内への水の投入部、並びに前記処理水槽内に一方側から他方側に延在してバイオマスを撹拌しつつ他方側に移行させる撹拌手段が設けられ、
前記処理水槽の他方側に水及びこれに同伴するバイオマスのオーバーフロー排出口を形成し、
前記処理水槽の他方側の下方に前記処理水槽内と連通する、下窄まりの沈降分離部が設けられ、前記沈降分離部の下端から下方に延びる排出管路が設けられ、前記沈降分離部においてバイオマスに混入する異物を沈降分離させ、前記排出管路より前記沈降分離部における沈降分離物を排出するようにしたことを特徴とするバイオマスの洗浄装置。 The present invention that has solved this problem is as follows.
<Invention of Claim 1>
A biomass input section into the treated water tank is provided on one side of the substantially horizontal treated water tank, and the water input section into the treated water tank, and extends from one side to the other side in the treated water tank. And a stirring means for transferring the biomass to the other side while stirring the biomass is provided,
Forming an overflow outlet for water and biomass accompanying it on the other side of the treated water tank,
In the lower part of the treated water tank, a constricted sedimentation separation part communicating with the inside of the treated water tank is provided, and a discharge pipe extending downward from the lower end of the sedimentation separation part is provided, in the sedimentation separation part An apparatus for cleaning biomass, wherein foreign matter mixed in biomass is settled and separated, and the sediment separated in the sedimentation separation section is discharged from the discharge pipe.

（作用効果）
前記処理水槽内に投入されたバイオマスは、撹拌手段によって撹拌されつつ一方側から他方側に移行される。この過程で、バイオマスから砂分などの異物が分離される。
他方側に移行したバイオマスは、オーバーフロー排出口から排出される。バイオマスの一部の短繊維分（ピス）が撹拌手段による移行過程で本体から分離したとしても、オーバーフローによって排出するようにしたので、短繊維分（ピス）を異物側に移行させて廃棄することが少なくなる。
本発明においては、洗浄と異物分離とを一つの装置で行なうことにより、簡易な構成で省スペース化を図りつつ安価な装置であっても、異物分離効率に優れたものとすることを狙いとしている。
バイオマスと分離した異物は比重が重いので下方に沈降する。そこで、処理水槽の他方側の下方に前記処理水槽内と連通する下窄まりの沈降分離部において重い異物のみを集合させて排出管路から排出する。 (Function and effect)
The biomass charged into the treated water tank is transferred from one side to the other side while being stirred by the stirring means. In this process, foreign substances such as sand are separated from the biomass.
The biomass transferred to the other side is discharged from the overflow outlet. Even if some short fibers (pis) of biomass are separated from the main body during the transition process by the stirring means, they are discharged by overflow, so the short fibers (pis) are transferred to the foreign matter side and discarded. Less.
In the present invention, by performing cleaning and foreign matter separation with a single device, the aim is to achieve excellent foreign matter separation efficiency even with an inexpensive device while saving space with a simple configuration. Yes.
The foreign matter separated from the biomass has a heavy specific gravity and sinks downward. Therefore, only heavy foreign matters are gathered and discharged from the discharge pipe at the lower sedimentation portion of the constriction communicating with the inside of the treated water tank below the other side of the treated water tank.

＜請求項２記載の発明＞
前記排出管路の上部に上部排出開閉弁及び下部に下部排出開閉弁がそれぞれ設けられ、上部排出開閉弁及び下部排出開閉弁がこの順に間欠的に開閉することにより、前記沈降分離物を排出する、請求項１記載のバイオマスの洗浄装置。 <Invention of Claim 2>
An upper discharge on-off valve and a lower discharge on-off valve are provided above and below the discharge pipe, respectively, and the upper discharge on-off valve and the lower discharge on-off valve are opened and closed intermittently in this order to discharge the sedimentation separation. The apparatus for cleaning biomass according to claim 1.

（作用効果）
沈降分離部における沈降分離物を、適宜のサイクルで排出させ、処理水槽内の水を可能な限り抜かずに、かつ排出を確実に行なわせるために、上部排出開閉弁及び下部排出開閉弁のこの順の間欠的開閉によって、沈降分離部における異物（沈降分離物）を排出する。 (Function and effect)
In order to ensure that the sediment separated in the sedimentation separation section is discharged in an appropriate cycle so that the water in the treated water tank is not drained as much as possible, and the drain is reliably discharged. Foreign matter (sedimented separation) in the sedimentation separation unit is discharged by intermittent intermittent opening and closing.

＜請求項３記載の発明＞
前記沈降分離部の下部または前記排出管路の上部排出開閉弁より上方と、並びに前記排出管路の上部排出開閉弁と下部排出開閉弁との間の、両方またはいずれか一方にそれぞれ流体の注入路を連結し、上方及び下方の両方、若しくは上方または下方のいずれか一方の注入路より流体を注入する、請求項２に記載のバイオマスの洗浄装置。 <Invention of Claim 3>
The sedimentation part and above the upper discharge opening and closing valve of the lower or the discharge line, as well as each injection of fluids, both or either between the discharge pipeline upper exhaust on-off valve and a lower discharge-off valve The biomass washing | cleaning apparatus of Claim 2 which connects a path | route and inject | pours fluid from both the upper and lower direction, or the injection path of either upper direction or the downward direction.

（作用効果）
繊維分の一部が沈降分離部内に入り込み滞留したり、排出管路から異物と共に排出されることがある。
そこで、沈降分離部の下部または排出管路の上部排出開閉弁より上方に流体の注入路を設け、ここから流体（たとえば水や空気）を好ましくは上向きに流出させることにより、沈降分離部に沈降した又は沈降しようとする繊維分を浮上させることにより、排出管路から異物と共に排出される割合を減少させることができる。
また、排出管路の上部排出開閉弁と下部排出開閉弁との間に流体の注入路を連結し、流体を注入することにより、上部排出開閉弁及び下部排出開閉弁を、この順で間欠的に開閉させることによって、沈降分離部における異物（沈降分離物）を排出する際に、流体の注入によって排出を確実に行なわせることができる。 (Function and effect)
A part of the fiber may enter and stay in the sedimentation separation part or may be discharged together with foreign matter from the discharge pipe.
Therefore, a fluid injection path is provided below the sedimentation separation section or above the upper discharge on-off valve of the drainage pipe, and the fluid (for example, water or air) is preferably flowed upward from here to settle into the sedimentation separation section. By raising the fibers that have been or are about to settle, the rate of discharge along with foreign matter from the discharge line can be reduced.
In addition, by connecting a fluid injection path between the upper discharge on-off valve and the lower discharge on-off valve of the discharge pipe and injecting fluid, the upper discharge on-off valve and the lower discharge on-off valve are intermittently connected in this order. When the foreign matter (sedimented separation product) in the sedimentation separation unit is ejected, the fluid can be reliably ejected by injecting the fluid.

＜請求項４記載の発明＞
前記撹拌手段が連続式２軸パドルミキサーである、請求項１〜３のいずれか１項に記載のバイオマスの洗浄装置。 <Invention of Claim 4>
The biomass washing apparatus according to any one of claims 1 to 3, wherein the stirring means is a continuous biaxial paddle mixer.

（作用効果）
撹拌手段を連続式２軸パドルミキサーとすることで、バイオマスの撹拌と移送を円滑に行なわせることが可能となる。その結果、異物の分離及び移送滞留時間が短くなるので、繊維質への水の浸透、それに伴う繊維質の沈降を軽減することができる。 (Function and effect)
By using a continuous biaxial paddle mixer as the stirring means, it becomes possible to smoothly stir and transfer biomass. As a result, the separation and transfer residence time of the foreign matter is shortened, so that the penetration of water into the fiber and the accompanying fiber sedimentation can be reduced.

＜請求項５記載の発明＞
実質的に水平の処理水槽の一方側にその処理水槽内へのバイオマスの投入部が設けられ、前記処理水槽内への水の投入部、並びに前記処理水槽内に一方側から他方側に延在してバイオマスを撹拌しつつ他方側に移行させる撹拌手段を設けた装置を使用し、
前記撹拌手段によって、バイオマスを撹拌しつつ一方側から他方側に移行し、その過程で異物をバイオマスから分離し、
バイオマスは、前記処理水槽の他方側に形成されたオーバーフロー排出口から、水と共にオーバーフローによって排出し、
前記処理水槽の他方側の下方に前記処理水槽内と連通する、下窄まりの沈降分離部内に異物を集積させ、前記沈降分離部においてバイオマスに混入する異物を沈降分離させ、
前記沈降分離部の下端から下方に延びる排出管路が設けられ、前記搬出管路より前記沈降分離部における沈降分離物を排出することを特徴とするバイオマスの洗浄方法。 <Invention of Claim 5>
A biomass input section into the treated water tank is provided on one side of the substantially horizontal treated water tank, and the water input section into the treated water tank, and extends from one side to the other side in the treated water tank. And using a device provided with stirring means to shift the biomass to the other side while stirring the biomass,
By the agitation means, while shifting the biomass from one side to the other while stirring the biomass, in the process to separate foreign substances from the biomass,
Biomass is discharged from the overflow discharge port formed on the other side of the treated water tank by overflowing with water,
The foreign matter is accumulated in the sedimentation part of the lower constriction that communicates with the inside of the treatment water tank below the other side of the treatment water tank, and the foreign matter mixed in the biomass in the sedimentation separation part is settled and separated.
A biomass washing method, characterized in that a discharge pipe extending downward from a lower end of the sedimentation separation section is provided, and sedimentation separation in the sedimentation separation section is discharged from the carry-out pipeline.

本発明によれば、バガス等のバイオマス原料の洗浄において、効率的に異物を除去し、かつ原料を高い歩留まりをもって回収することができる。   ADVANTAGE OF THE INVENTION According to this invention, in washing | cleaning of biomass raw materials, such as bagasse, a foreign material can be removed efficiently and a raw material can be collect | recovered with a high yield.

バイオマス処理工程のフロー図である。It is a flowchart of a biomass treatment process. 本発明に係るバイオマス洗浄装置の一例の正面図である。It is a front view of an example of the biomass washing | cleaning apparatus which concerns on this invention. 本発明に係るバイオマス洗浄装置の一例の上面図である。It is a top view of an example of the biomass washing | cleaning apparatus which concerns on this invention. 本発明に係るバイオマス洗浄装置の一例の断面図である。（Ａ）図３のＡ−Ａ断視図、（Ｂ）図３のＢ−Ｂ断視図。It is sectional drawing of an example of the biomass washing | cleaning apparatus which concerns on this invention. (A) AA sectional view of FIG. 3, (B) BB sectional view of FIG.

図１に、バイオマス処理工程の概略を示す。バガス等のバイオマスは、洗浄工程により、砂、小石等の異物と分離され、濾過工程により洗浄工程で添加された水分の多くが除去される。濾過後のバイオマスは、スクリューフィーダー、ピストンフィーダー等の輸送手段で輸送され、加水分解工程に供される。加水分解工程では、バイオマスの主成分であるセルロースの加水分解による糖化が行われる。糖化された原料は、さらに発酵によりエタノール等の有機燃料や有機酸等に加工される。本発明は、上記工程のうち、洗浄工程に係る装置及び方法に関するものである。   FIG. 1 shows an outline of the biomass treatment process. Biomass such as bagasse is separated from foreign substances such as sand and pebbles by the washing process, and much of the water added in the washing process is removed by the filtration process. The filtered biomass is transported by a transportation means such as a screw feeder or a piston feeder, and is subjected to a hydrolysis step. In the hydrolysis step, saccharification is performed by hydrolysis of cellulose, which is the main component of biomass. The saccharified raw material is further processed into an organic fuel such as ethanol or an organic acid by fermentation. The present invention relates to an apparatus and a method related to a cleaning process among the above processes.

本発明におけるバイオマスとは、バガス、麦わら、稲わら、パーム残渣、コーンストーバー、パーム椰子残渣、キャッサバ残渣、木片、木質廃材、ジュート、ケナフ、古紙等のソフトバイオマスを指すものとする。具体的には、表１に示す性質のバイオマスについて、特に好適に本発明を適用することができる。   The biomass in the present invention refers to soft biomass such as bagasse, wheat straw, rice straw, palm residue, corn stover, palm eggplant residue, cassava residue, piece of wood, wood waste, jute, kenaf, and waste paper. Specifically, the present invention can be particularly preferably applied to biomass having the properties shown in Table 1.

Figure 2011245383
Figure 2011245383

図２，３，４に本発明に係るバイオマス洗浄装置の一例を示す。水及びバイオマスは、バイオマス洗浄装置１の撹拌領域１０に、装置始端側の投入口１１から投入される。水及びバイオマスは別々に投入してもよく、また、予めスクリューミキサー等で混和してから投入してもよい。   2, 3 and 4 show an example of a biomass cleaning apparatus according to the present invention. Water and biomass are introduced into the stirring region 10 of the biomass cleaning apparatus 1 from the inlet 11 on the apparatus start side. Water and biomass may be added separately, or may be added after mixing with a screw mixer or the like in advance.

撹拌領域１０は、パドルミキサー、リボンミキサー、ロッドミキサー等の撹拌手段を備える。特に図示例のような連続式２軸パドルミキサーの使用が、材料の撹拌と同時に搬送もでき、より迅速にバイオマスを異物より分離できるため好ましい。図示例においては、撹拌領域１０に、多数のパドル１３を有するパドルシャフト１２が２本、材料の進行方向と平行に設置されている。各パドルシャフト１２の装置始端側末端には駆動ギア１４を、終端側末端にはテイルローラ１５を有し、駆動ギア１４の回転により、２本のパドルシャフト１２全体が回転する。   The stirring region 10 includes stirring means such as a paddle mixer, a ribbon mixer, and a rod mixer. In particular, the use of a continuous biaxial paddle mixer as shown in the example is preferable because it can be transported simultaneously with the stirring of the material and the biomass can be separated from the foreign matter more quickly. In the illustrated example, two paddle shafts 12 having a large number of paddles 13 are installed in the agitation region 10 in parallel with the traveling direction of the material. Each paddle shaft 12 has a drive gear 14 at the start end of the apparatus and a tail roller 15 at the end of the end, and the rotation of the drive gear 14 rotates the entire two paddle shafts 12.

撹拌領域に投入された水及びバイオマスは、撹拌槽１６内で撹拌混合されながら、装置終端側へ水平移動する。水流と撹拌作用でバイオマス中の繊維質が解されることにより、繊維質と繊維質内部に混入していた異物とが分離される。本発明に係るバイオマスの繊維質は比重が低いため水表面に浮揚する一方、異物は一般に比重が高いため、装置底部に向かって移動する。バイオマス及び繊維質は撹拌槽幅方向中央部分では、パドルにより生じた水流の影響を受けにくく、繊維質の離解が効率よく行われない傾向がある。そのため、当該部分に障壁１７を設け、当該部分の水流に複雑性を与える構成とすることが好ましい（図４（Ａ））。水表面に浮揚した繊維質は、装置終端の側部に備えたオーバーフローシュート１８より、装置外に排出され、脱水工程に送られる（図４（Ｂ））。   The water and biomass charged into the agitation region move horizontally to the apparatus end side while being agitated and mixed in the agitation tank 16. When the fiber in the biomass is unwound by the water flow and the stirring action, the fiber and the foreign matter mixed in the fiber are separated. Since the biomass fiber according to the present invention has a low specific gravity, it floats on the surface of the water. On the other hand, foreign matter generally has a high specific gravity, and therefore moves toward the bottom of the apparatus. Biomass and fiber are less likely to be affected by the water flow generated by the paddles at the central portion in the stirring tank width direction, and there is a tendency that fiber disaggregation is not performed efficiently. For this reason, it is preferable to provide a configuration in which a barrier 17 is provided in the portion and the water flow in the portion is complicated (FIG. 4A). The fiber floated on the water surface is discharged out of the apparatus from the overflow chute 18 provided at the side of the terminal of the apparatus, and sent to the dehydration process (FIG. 4B).

撹拌領域で繊維質より分離された砂分等の異物は、装置底部に沈降しながら水流に乗って比重分離領域２０まで搬送される。異物は、比重分離槽２５底部に向かって沈降し、貯留する。貯留した異物は、上部排出開閉弁２１及び下部排出開閉弁２２を開放することにより排出される。上部排出開閉弁２１及び下部排出開閉弁２２は、装置内の水位を保ち、異物の沈降を促進するために、連続的ではなく、間欠的にこの順に開閉することにより、比重分離槽２５における沈降分離物を排出する。この上部排出開閉弁２１及び下部排出開閉弁２２に替えて、ロータリーバルブを用いてもよい。   Foreign matter such as sand separated from the fiber in the agitation zone is carried to the specific gravity separation zone 20 along the water stream while sinking to the bottom of the apparatus. The foreign matter settles toward the bottom of the specific gravity separation tank 25 and is stored. The stored foreign matter is discharged by opening the upper discharge opening / closing valve 21 and the lower discharge opening / closing valve 22. The upper discharge on-off valve 21 and the lower discharge on-off valve 22 maintain the water level in the apparatus and promote the sedimentation of foreign matter, so that the sedimentation in the specific gravity separation tank 25 is performed intermittently instead of opening and closing in this order. Drain the separation. Instead of the upper discharge on-off valve 21 and the lower discharge on-off valve 22, a rotary valve may be used.

繊維質の多くは、撹拌領域終端側部よりオーバーフローにより排出されるが、一部の繊維質は繊維内部に水分が浸透することにより比重が増加し、異物と共に比重分離領域底部に沈降する。沈降した繊維質は、異物と共に排出され歩留まりを低下させ、また装置底部の抜き出し口や管路の閉塞を生じる要因となる。本発明に係る装置には、装置底部及び管路に水または空気の流体を連続的または間欠的に供給し、水流または気泡により繊維分を浮上させ排出管路から異物と共に排出される割合を減少させると共に閉塞を除去する、底部流体注入手段を設けることが好ましい。装置底部への流体の供給は、上部排出開閉弁２１を閉じた状態で、流体バルブ２３を開放することにより行う。また、管路への流体の供給は、上部排出開閉弁２１を開き、下部排出開閉弁２２を閉じた状態で、流体バルブ２４を開放することにより行う。流体により閉塞を形成した繊維質は離解し、装置内部に押し戻される。さらに、繊維質の一部は流体の上昇流に乗って、装置上部の撹拌領域に達し、撹拌領域の水流に乗ってオーバーフローシュート１８まで送られる。
なお、流体バルブ２３，２４から水を供給する場合、水は後段の濾過工程における濾液を使用してもよい。 Most of the fibers are discharged from the end of the stirring region due to overflow, but the specific gravity of some fibers increases due to the penetration of moisture into the fibers, and settles at the bottom of the specific gravity separation region together with foreign matter. The settled fiber is discharged together with the foreign matter to reduce the yield, and becomes a factor that causes the outlet of the apparatus bottom and the blockage of the pipeline. In the apparatus according to the present invention, water or air fluid is supplied continuously or intermittently to the bottom of the apparatus and the pipe line, and the proportion of fibers discharged by the water or air bubbles is reduced by the water flow or air bubbles. Preferably, a bottom fluid injecting means is provided that allows and removes the blockage. The fluid is supplied to the bottom of the apparatus by opening the fluid valve 23 with the upper discharge opening / closing valve 21 closed. Further, the fluid is supplied to the pipe line by opening the upper discharge on-off valve 21 and opening the fluid valve 24 with the lower discharge on-off valve 22 closed. The fiber that forms the blockage by the fluid is released and pushed back into the apparatus. Furthermore, a part of the fiber rides on the upward flow of the fluid, reaches the stirring area at the upper part of the apparatus, and is sent to the overflow chute 18 along the water flow in the stirring area.
In addition, when supplying water from the fluid valves 23 and 24, you may use the filtrate in a latter filtration process.

１…バイオマス洗浄装置、１０…撹拌領域、１１…投入口、１２…パドルシャフト、１３…パドル、１４…駆動ギア、１５…テイルローラ、１６…撹拌槽、１７…障壁、１８…オーバーフローシューター、２０…比重分離領域、２１…上部排出開閉弁，２２…下部排出開閉弁、２３，２４…注入バルブ、２５…比重分離槽。   DESCRIPTION OF SYMBOLS 1 ... Biomass washing apparatus, 10 ... Stirring zone, 11 ... Loading port, 12 ... Paddle shaft, 13 ... Paddle, 14 ... Drive gear, 15 ... Tail roller, 16 ... Stirring tank, 17 ... Barrier, 18 ... Overflow shooter, 20 ... specific gravity separation region, 21 ... upper discharge on-off valve, 22 ... lower discharge on-off valve, 23, 24 ... injection valve, 25 ... specific gravity separation tank.

Claims (5)

実質的に水平の処理水槽の一方側にその処理水槽内へのバイオマスの投入部が設けられ、前記処理水槽内への水の投入部、並びに前記処理水槽内に一方側から他方側に延在してバイオマスを撹拌しつつ他方側に移行させる撹拌手段が設けられ、
前記処理水槽の他方側に水及びこれに同伴するバイオマスのオーバーフロー排出口を形成し、
前記処理水槽の他方側の下方に前記処理水槽内と連通する、下窄まりの沈降分離部が設けられ、前記沈降分離部の下端から下方に延びる排出管路が設けられ、前記沈降分離部においてバイオマスに混入する異物を沈降分離させ、前記排出管路より前記沈降分離部における沈降分離物を排出するようにしたことを特徴とするバイオマスの洗浄装置。 A biomass input section into the treated water tank is provided on one side of the substantially horizontal treated water tank, and the water input section into the treated water tank, and extends from one side to the other side in the treated water tank. And a stirring means for transferring the biomass to the other side while stirring the biomass is provided,
Forming an overflow outlet for water and biomass accompanying it on the other side of the treated water tank,
In the lower part of the treated water tank, a constricted sedimentation separation part communicating with the inside of the treated water tank is provided, and a discharge pipe extending downward from the lower end of the sedimentation separation part is provided, in the sedimentation separation part An apparatus for cleaning biomass, wherein foreign matter mixed in biomass is settled and separated, and the sediment separated in the sedimentation separation section is discharged from the discharge pipe. 前記排出管路の上部に上部排出開閉弁及び下部に下部排出開閉弁がそれぞれ設けられ、上部排出開閉弁及び下部排出開閉弁がこの順に間欠的に開閉することにより、前記沈降分離物を排出する、請求項１記載のバイオマスの洗浄装置。   An upper discharge on-off valve and a lower discharge on-off valve are provided above and below the discharge pipe, respectively, and the upper discharge on-off valve and the lower discharge on-off valve are opened and closed intermittently in this order to discharge the sedimentation separation. The apparatus for cleaning biomass according to claim 1. 前記沈降分離部の下部または前記排出管路の上部排出開閉弁より上方、並びに前記排出管路の上部排出開閉弁と下部排出開閉弁との間にそれぞれ流体の注入路を連結し、上方及び下方の両方、若しくは上方または下方のいずれか一方の注入路より流体を注入する、請求項２に記載のバイオマスの洗浄装置。   A fluid injection path is connected to the lower part of the sedimentation separation unit or above the upper discharge on-off valve of the discharge pipe and between the upper discharge on-off valve and the lower discharge on-off valve of the discharge pipe, respectively. The biomass cleaning apparatus according to claim 2, wherein the fluid is injected from both of the above, or from either the upper or lower injection path. 前記撹拌手段が連続式２軸パドルミキサーである、請求項１〜３のいずれか１項に記載のバイオマスの洗浄装置。   The biomass washing apparatus according to any one of claims 1 to 3, wherein the stirring means is a continuous biaxial paddle mixer. 実質的に水平の処理水槽の一方側にその処理水槽内へのバイオマスの投入部が設けられ、前記処理水槽内への水の投入部、並びに前記処理水槽内に一方側から他方側に延在してバイオマスを撹拌しつつ他方側に移行させる撹拌手段を設けた装置を使用し、
前記撹拌手段によって、バイオマスを撹拌しつつ一方側から他方側に移行し、その過程で異物をバイオマスから分離し、
バイオマスは、前記処理水槽の他方側に形成されたオーバーフロー排出口から、水と共にオーバーフローによって排出し、
前記処理水槽の他方側の下方に前記処理水槽内と連通する、下窄まりの沈降分離部内に異物を集積させ、前記沈降分離部においてバイオマスに混入する異物を沈降分離させ、
前記沈降分離部の下端から下方に延びる排出管路が設けられ、前記排出管路より前記沈降分離部における沈降分離物を排出することを特徴とするバイオマスの洗浄方法。 A biomass input section into the treated water tank is provided on one side of the substantially horizontal treated water tank, and the water input section into the treated water tank, and extends from one side to the other side in the treated water tank. And using a device provided with stirring means to shift the biomass to the other side while stirring the biomass,
By the agitation means, while shifting the biomass from one side to the other while stirring the biomass, in the process to separate foreign substances from the biomass,
Biomass is discharged from the overflow discharge port formed on the other side of the treated water tank by overflowing with water,
The foreign matter is accumulated in the sedimentation part of the lower constriction that communicates with the inside of the treatment water tank below the other side of the treatment water tank, and the foreign matter mixed in the biomass in the sedimentation separation part is settled and separated.
A biomass washing method, characterized in that a discharge pipe extending downward from the lower end of the sedimentation separator is provided, and sedimentation separation in the sedimentation separator is discharged from the discharge pipeline.
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