JP2019037914A - Suspended matter recovery device and recovery method from suspension - Google Patents

Suspended matter recovery device and recovery method from suspension Download PDF

Info

Publication number
JP2019037914A
JP2019037914A JP2017159766A JP2017159766A JP2019037914A JP 2019037914 A JP2019037914 A JP 2019037914A JP 2017159766 A JP2017159766 A JP 2017159766A JP 2017159766 A JP2017159766 A JP 2017159766A JP 2019037914 A JP2019037914 A JP 2019037914A
Authority
JP
Japan
Prior art keywords
suspension
hot air
combustion
tower
solid fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2017159766A
Other languages
Japanese (ja)
Other versions
JP7017833B2 (en
Inventor
雄司 今田
Yuji Imada
雄司 今田
幹大 藤戸
Mikihiro Fujito
幹大 藤戸
格章 福田
Masaaki Fukuda
格章 福田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikko Co Ltd
Nikko KK
Original Assignee
Nikko Co Ltd
Nikko KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikko Co Ltd, Nikko KK filed Critical Nikko Co Ltd
Priority to JP2017159766A priority Critical patent/JP7017833B2/en
Publication of JP2019037914A publication Critical patent/JP2019037914A/en
Application granted granted Critical
Publication of JP7017833B2 publication Critical patent/JP7017833B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/138Water desalination using renewable energy
    • Y02A20/141Wind power

Abstract

To provide a suspended matter recovery device and a recovery method from suspension, capable of separating and recovering a suspended matter from the suspension, inexpensively with a small environmental load.SOLUTION: A suspended matter recovery device includes a hot wind generation furnace 4 comprising a kiln body 2 for solid fuel combustion having a co-burning burner 15 and an air supply fan 16 for combustion, and a secondary combustion chamber 3 for burning and decomposing a volatile matter generated following combustion of the solid fuel in the kiln body 2, and further includes a suspension evaporation tower 6 communicating with a hot wind passage 5 of the hot wind generation furnace 4, a suspension spray nozzle 22 mounted on an upper part of the suspension evaporation tower 6, and a pump 25 for sucking the suspension stored in a suspension tank 23, and pressure-feeding it to the suspension spray nozzle 22.SELECTED DRAWING: Figure 1

Description

本発明は、各種の懸濁物を含んだ懸濁液から懸濁物を分離して回収する回収装置及び回収方法に関する。   The present invention relates to a recovery apparatus and a recovery method for separating and recovering a suspension from a suspension containing various suspensions.

従来、各種の懸濁物を含んだ懸濁液から懸濁物を分離回収する場合、前記懸濁液を適宜の加熱手段にて加熱処理し、懸濁液中の水分を強制的に蒸発させ、残った懸濁物を回収するようにした装置がある(例えば、特許文献1、2参照)。   Conventionally, when a suspension is separated and recovered from a suspension containing various suspensions, the suspension is heat-treated with an appropriate heating means to forcibly evaporate water in the suspension. There is an apparatus for recovering the remaining suspension (see, for example, Patent Documents 1 and 2).

特開2002−206856号公報JP 2002-206856 A 特開2005−326053号公報JP 2005-326053 A

しかしながら、上記従来装置では、懸濁液の加熱処理にあたって重油等の化石燃料をボイラーにて燃焼させることで発生させた高温の蒸気を利用するようにしており、コスト的に改善の余地があると考えられる。また、環境面から見ても、環境負荷の高い化石燃料の使用量をできるだけ抑えることが望ましい。   However, in the above-described conventional device, high-temperature steam generated by burning fossil fuel such as heavy oil in a boiler is used for the heat treatment of the suspension, and there is room for improvement in cost. Conceivable. Also, from the viewpoint of the environment, it is desirable to minimize the amount of fossil fuel that has a high environmental load.

本発明は上記の点に鑑み、低コストかつ低環境負荷にて懸濁液から懸濁物を分離回収可能な懸濁液からの懸濁物回収装置及び回収方法を提供することを課題とする。   This invention makes it a subject to provide the suspension collection | recovery apparatus and the collection | recovery method from a suspension which can separate and collect a suspension from a suspension in low cost and low environmental load in view of said point. .

上記課題を解決するために、本発明に係る請求項1記載の懸濁液からの懸濁物回収装置では、助燃バーナ及び燃焼用空気供給ファンを有する固形燃料燃焼用のキルン本体と、該キルン本体内での固形燃料の燃焼に伴って生じる揮発分を燃焼分解する二次燃焼室とからなる熱風発生炉を備えると共に、該熱風発生炉の熱風通路に連通する懸濁液蒸発塔と、該懸濁液蒸発塔の上部に取り付けた懸濁液噴霧ノズルと、懸濁液タンク内に貯留した懸濁液を吸い込んで前記懸濁液噴霧ノズルに圧送するポンプとを備えたことを特徴としている。   In order to solve the above-mentioned problems, in the suspension recovery device from suspension according to claim 1 according to the present invention, a kiln main body for solid fuel combustion having an auxiliary burner and a combustion air supply fan, and the kiln A hot air generating furnace comprising a secondary combustion chamber for combusting and decomposing volatile components generated by the combustion of solid fuel in the main body, a suspension evaporation tower communicating with the hot air passage of the hot air generating furnace, A suspension spray nozzle attached to the upper part of the suspension evaporation tower and a pump for sucking the suspension stored in the suspension tank and pumping the suspension to the suspension spray nozzle are provided. .

また、請求項2記載の懸濁液からの懸濁物回収装置では、前記懸濁液蒸発塔は、塔上部に熱風通路を、塔下部に排気煙道を連通し、塔内には熱風を下向きから上向きへと転向させる折曲通路を前記排気煙道に連通して慣性集塵機構を備えると共に、塔下端部には懸濁液から分離した懸濁物を回収する懸濁物回収部を備えたことを特徴としている。   In the suspension recovery apparatus from the suspension according to claim 2, the suspension evaporation tower has a hot air passage in the upper part of the tower, an exhaust flue in the lower part of the tower, and hot air in the tower. A bent passage for turning from downward to upward is communicated with the exhaust flue and provided with an inertia dust collecting mechanism, and a suspension recovery part for recovering the suspension separated from the suspension is provided at the lower end of the tower. It is characterized by that.

また、請求項3記載の懸濁液からの懸濁物回収装置では、前記懸濁液噴霧ノズルは、所定圧力の空気とともに噴射する二流体ノズルとし、懸濁液を微粒化して熱風中に噴霧して蒸発させることを特徴としている。   Moreover, in the suspension collection device from the suspension according to claim 3, the suspension spray nozzle is a two-fluid nozzle that sprays together with air of a predetermined pressure, and the suspension is atomized and sprayed into hot air. It is characterized by evaporating.

また、請求項4記載の懸濁液からの懸濁物回収方法では、キルン本体内にて必要な燃焼用空気を吹き込みながら木質系バイオマスを自燃によって燃焼する工程と、前記燃焼に伴って生じる揮発分を二次燃焼室にて燃焼分解させて高温の熱風を発生する工程と、前記発生した熱風と噴霧する懸濁液との間の直接的な接触により懸濁液を蒸発させる工程と、前記懸濁液の蒸発後に残る懸濁物を分離回収する工程とを含むことを特徴としている。   Further, in the suspension recovery method from the suspension according to claim 4, the step of burning the woody biomass by self-combustion while blowing the necessary combustion air in the kiln body, and the volatilization caused by the combustion A step of combusting and decomposing a portion in a secondary combustion chamber to generate hot hot air; a step of evaporating the suspension by direct contact between the generated hot air and the suspension to be sprayed; And a step of separating and recovering the suspension remaining after evaporation of the suspension.

また、請求項5記載の懸濁液からの懸濁物回収方法では、前記懸濁物を分離回収する工程にて回収した懸濁物を前記燃焼工程に供給する工程を含むことを特徴としている。   The suspension recovery method from the suspension according to claim 5 includes a step of supplying the suspension recovered in the step of separating and recovering the suspension to the combustion step. .

本発明に係る請求項1記載の懸濁液からの懸濁物回収装置によれば、固形燃料燃焼用のキルン本体と、該キルン本体内での固形燃料の燃焼に伴って生じる揮発分を燃焼分解する二次燃焼室とからなる熱風発生炉を備えると共に、該熱風発生炉の熱風通路に連通する懸濁液蒸発塔と、該懸濁液蒸発塔に取り付けた懸濁液噴霧ノズルと、懸濁液タンク内に貯留した懸濁液を吸い込んで前記懸濁液噴霧ノズルに圧送するポンプとを備えたので、重油等の化石燃料と比較して低コストでかつ環境負荷の低い固形燃料を燃焼させることで得られる熱風でもって懸濁液を効率よく蒸発させて懸濁物を分離回収できる。   According to the suspension recovery device from the suspension according to the first aspect of the present invention, the kiln main body for burning the solid fuel and the volatile matter generated by the combustion of the solid fuel in the kiln main body are burned. A hot air generating furnace comprising a secondary combustion chamber for decomposition, a suspension evaporation tower communicating with the hot air passage of the hot air generating furnace, a suspension spray nozzle attached to the suspension evaporation tower, a suspension It is equipped with a pump that sucks the suspension stored in the suspension tank and pumps it to the suspension spray nozzle, so it burns solid fuel that is low in cost and low in environmental impact compared to fossil fuels such as heavy oil The suspension can be separated and recovered by efficiently evaporating the suspension with the hot air obtained.

また、請求項2記載の懸濁液からの懸濁物回収装置によれば、前記懸濁液蒸発塔は、塔上部に熱風通路を、塔下部に排気煙道を連通し、塔内には熱風を下向きから上向きへと転向させる折曲通路を前記排気煙道に連通して慣性集塵機構を備えると共に、塔下端部には懸濁液から分離した懸濁物を回収する懸濁物回収部を備えたので、懸濁液の蒸発によって熱風中に分散して混在する懸濁物を、熱風が転向する際の慣性力を利用して効果的に分離沈降させて回収できる。   According to the suspension recovery apparatus from the suspension according to claim 2, the suspension evaporation tower has a hot air passage in the upper part of the tower and an exhaust flue in the lower part of the tower. A suspension collecting unit for collecting a suspension separated from the suspension at the lower end of the tower is provided with an inertia dust collecting mechanism by communicating with the exhaust flue a bent passage for turning hot air from downward to upward. Therefore, the suspension that is dispersed and mixed in the hot air by evaporation of the suspension can be effectively separated and settled using the inertial force when the hot air turns.

また、請求項3記載の懸濁液からの懸濁物回収装置によれば、前記懸濁液噴霧ノズルは、所定圧力の空気とともに噴射する二流体ノズルとし、懸濁液を微粒化して熱風中に噴霧して蒸発させるので、懸濁液をより効率よく蒸発できて懸濁物を分離回収できる。   Further, according to the suspension recovery device from the suspension according to claim 3, the suspension spray nozzle is a two-fluid nozzle that jets together with air of a predetermined pressure, and the suspension is atomized to generate hot air. As a result, the suspension can be evaporated more efficiently and the suspension can be separated and recovered.

また、請求項4記載の懸濁液からの懸濁物回収方法によれば、キルン本体内にて必要な燃焼用空気を吹き込みながら木質系バイオマスを自燃によって燃焼する工程と、前記燃焼に伴って生じる揮発分を二次燃焼室にて燃焼分解させて高温の熱風を発生する工程と、前記発生した熱風と噴霧する懸濁液との間の直接的な接触により懸濁液を蒸発させる工程と、前記懸濁液の蒸発後に残る懸濁物を分離回収する工程とを含むので、重油等の化石燃料と比較して低コストでかつ環境負荷の低い固形燃料である木質系バイオマスを自燃させることで得られる高温の熱風でもって懸濁液を効率よく蒸発させて懸濁物を分離回収できる。   Moreover, according to the suspension collection method from the suspension according to claim 4, the step of combusting the woody biomass by self-combustion while blowing the necessary combustion air in the kiln body, and accompanying the combustion A step of combusting and decomposing the generated volatile matter in a secondary combustion chamber to generate hot hot air; and a step of evaporating the suspension by direct contact between the generated hot air and the suspension to be sprayed; And the step of separating and recovering the suspension remaining after evaporation of the suspension, so that the woody biomass, which is a solid fuel having a low environmental impact and low cost compared to fossil fuels such as heavy oil, is self-combusted. The suspension can be separated and recovered by efficiently evaporating the suspension with the hot hot air obtained in (1).

また、請求項5記載の懸濁液からの懸濁物回収方法によれば、前記懸濁物を分離回収する工程にて回収した懸濁物を前記燃焼工程に供給する工程を含むので、懸濁液から回収される懸濁物が可燃性のものであれば、懸濁液を蒸発させる熱風発生用の固形燃料の一部として利用でき、懸濁物回収時の一層の低コスト化を図れる。   In addition, according to the method for recovering a suspension from a suspension according to claim 5, the method includes a step of supplying the suspension recovered in the step of separating and recovering the suspension to the combustion step. If the suspension recovered from the suspension is flammable, it can be used as a part of the solid fuel for hot air generation that evaporates the suspension, which can further reduce the cost during suspension recovery. .

本発明に係る懸濁液からの懸濁物回収装置及び回収方法の一実施例を示す概略説明図である。It is a schematic explanatory drawing which shows one Example of the suspension collection | recovery apparatus and the collection | recovery method from the suspension concerning this invention. 図1の懸濁液蒸発塔の一部切り掻き拡大図である。FIG. 2 is a partially cut away enlarged view of the suspension evaporation tower of FIG. 1. 図1の懸濁液噴霧ノズルの拡大断面図である。It is an expanded sectional view of the suspension spray nozzle of FIG.

本発明に係る懸濁液からの懸濁物回収装置及び回収方法にあっては、助燃バーナ及び燃焼用空気供給ファンを有する木質系バイオマス等の固形燃料燃焼用のキルン本体と、該キルン本体内での固形燃料の燃焼に伴って生じる可燃性の揮発分を燃焼分解する二次燃焼室とからなる熱風発生炉を備える。また、前記熱風発生炉の熱風通路に連通する懸濁液蒸発塔と、該懸濁液蒸発塔の上部に取り付けた懸濁液噴霧ノズルと、懸濁液タンク内に貯留した各種の懸濁物を含んだ懸濁液を吸い込んで前記懸濁液噴霧ノズルに圧送するポンプとを備える。   In the suspension recovery apparatus and the recovery method from the suspension according to the present invention, a kiln body for solid fuel combustion such as woody biomass having an auxiliary burner and a combustion air supply fan, and the inside of the kiln body And a secondary combustion chamber for combusting and decomposing flammable volatile components generated by the combustion of solid fuel. In addition, a suspension evaporation tower communicating with the hot air passage of the hot air generation furnace, a suspension spray nozzle attached to an upper portion of the suspension evaporation tower, and various suspensions stored in the suspension tank And a pump for sucking and feeding the suspension containing the suspension to the suspension spray nozzle.

前記懸濁液蒸発塔は、塔上部に前記熱風通路を、塔下部に排気煙道を連通し、前記熱風通路より塔内に導入した熱風が塔上部側から塔下部側に向けて流下するように構成している一方、塔内には前記熱風の流向を下向きから上向きへと急激に転向させるように、例えば、塔の水平断面略中心部付近に下方へ向けて熱風導出用の開口部を開口し、該開口部から塔側壁方向へ向けて略直角に折曲形成してなる折曲通路を前記排気煙道に連通して慣性集塵機構を備えると共に、塔下端部には懸濁液から分離した懸濁物を回収する懸濁物回収部を備える。   In the suspension evaporation tower, the hot air passage is connected to the upper part of the tower and the exhaust flue is connected to the lower part of the tower, so that the hot air introduced into the tower from the hot air passage flows down from the upper part of the tower toward the lower part of the tower. On the other hand, in the tower, for example, an opening for deriving hot air is provided downward near the center of the horizontal section of the tower so as to rapidly change the flow direction of the hot air from downward to upward. An opening, and a bent passage formed at a substantially right angle from the opening toward the side wall of the tower communicates with the exhaust flue and is provided with an inertia dust collecting mechanism. A suspension collection unit for collecting the separated suspension is provided.

また、好ましくは、前記懸濁液噴霧ノズルを所定圧力の空気と共に噴射する外部混合型の二流体ノズルとし、例えば、懸濁物が混在する懸濁液を微粒化しながら前記熱風通路より供給する熱風に向けて噴霧するようにすると、懸濁液を効率よく蒸発させることができ、単位時間当たりより多くの懸濁物を分離回収できる構成となる。また、多くの懸濁物を含んだ懸濁液でもノズル先端部等で目詰まりさせることなく比較的安定して噴霧できる。   Preferably, the suspension spray nozzle is an externally mixed two-fluid nozzle that injects air with a predetermined pressure, for example, hot air supplied from the hot air passage while atomizing the suspension in which the suspension is mixed. When spraying toward the surface, the suspension can be efficiently evaporated, and more suspension can be separated and recovered per unit time. In addition, even a suspension containing a lot of suspension can be sprayed relatively stably without clogging at the nozzle tip or the like.

なお、前記懸濁液噴霧ノズルより噴霧する懸濁液の噴霧量としては、少なくとも懸濁液を残さずに(塔内でドレン水等を発生させることなく)蒸発処理できる範囲内で適宜調整するとよいが、例えば、前記熱風発生炉にて発生する熱風の温度や熱風量等を逐次検出し、それらの検出値から求められる熱風の保有熱量に基づいて、懸濁液を残さずに蒸発処理できる最大限度程度の噴霧量となるように調整制御するようにすると好ましい。また、前記懸濁液蒸発塔下流の排気煙道においても排ガス温度を検出し、この排ガス温度が露点温度を下回らないように、例えば、排ガス温度が露点温度以下になれば前記懸濁液噴霧ノズルからの噴霧量を絞る方向へ調整制御するようにするとよい。   The spray amount of the suspension sprayed from the suspension spray nozzle is appropriately adjusted within a range where evaporation processing can be performed without leaving at least the suspension (without generating drain water or the like in the tower). Although it is good, for example, the temperature of hot air generated in the hot air generating furnace, the amount of hot air, etc. can be sequentially detected, and the evaporation process can be performed without leaving a suspension based on the retained heat amount of the hot air obtained from the detected values. It is preferable to perform adjustment control so that the spray amount is about the maximum limit. Further, the exhaust gas temperature is also detected in the exhaust flue downstream of the suspension evaporation tower, so that the exhaust gas temperature does not fall below the dew point temperature, for example, the suspension spray nozzle if the exhaust gas temperature falls below the dew point temperature. It is preferable to perform adjustment control in a direction to reduce the spray amount from the nozzle.

上記構成とすることにより、例えば、安定供給の難しい木質系バイオマス等の固形燃料の性状(例えば、含水率等)や供給量等のバラツキによって発生する熱風の保有熱量が大きく変動する場合でも、懸濁液をそれに追随させるように過不足なく噴霧して適正に蒸発処理できると共に、蒸発処理に伴って冷却されかつ高湿度状態にある排ガスの温度を少なくとも露点温度以上に保て、懸濁液蒸発塔下流側に設置される集塵機や煙突等での結露の発生を防いで腐食等の不具合を防止できる。   By adopting the above configuration, for example, even when the amount of retained heat of hot air generated due to variations in the properties (for example, moisture content) of solid fuel such as woody biomass that is difficult to stably supply and the supply amount varies greatly, The suspension can be properly evaporated by spraying the turbid liquid without excess or deficiency, and the temperature of the exhaust gas that has been cooled during the evaporation process and is in a high humidity state is kept at least above the dew point temperature to evaporate the suspension. It prevents the occurrence of condensation in the dust collector or chimney installed on the downstream side of the tower and prevents problems such as corrosion.

そして、上記構成の装置を使用し、各種の懸濁物を含んだ懸濁液を蒸発させて懸濁物を分離回収するときには、先ず、熱風発生炉の助燃バーナを燃焼させてキルン本体内を予熱後、例えば木質系バイオマス等の固形燃料を所定量ずつ投入して着火燃焼させると共に、燃焼用空気供給ファンより燃焼に必要な燃焼用空気をキルン内に吹き込み、前記固形燃料の燃焼が安定してくれば助燃バーナを消火して固形燃料を自燃状態で燃焼させる一方、前記燃焼に伴って生じる可燃性の揮発分は下流の二次燃焼室にて燃焼分解させて高温の熱風を発生させる。   When using the apparatus having the above configuration to evaporate a suspension containing various types of suspensions and separate and recover the suspensions, first, the auxiliary burner of the hot air generating furnace is burned to make the inside of the kiln main body. After preheating, a predetermined amount of solid fuel such as woody biomass is added and ignited and combusted, and combustion air necessary for combustion is blown into the kiln from the combustion air supply fan, and the combustion of the solid fuel is stabilized. If this is done, the auxiliary burner is extinguished and the solid fuel is burned in a self-burning state, while the flammable volatile matter produced by the combustion is burned and decomposed in the downstream secondary combustion chamber to generate hot hot air.

そして、前記二次燃焼室にて発生させた熱風は熱風通路を介して下流の懸濁液蒸発塔に導入し、この高温の熱風に対して懸濁液蒸発塔上部の懸濁液噴霧ノズルより所定量の懸濁液を噴霧し、熱風と直接的に接触させながら懸濁液を蒸発させていく。そして、蒸発した懸濁液は、熱風(排ガス)と共に塔下部側へ流下した後、前記折曲通路を介して下流の排気煙道へと導出する。   Then, the hot air generated in the secondary combustion chamber is introduced into the suspension evaporation tower downstream through the hot air passage, and the high-temperature hot air is supplied from the suspension spray nozzle above the suspension evaporation tower. A predetermined amount of the suspension is sprayed, and the suspension is evaporated while being in direct contact with hot air. The evaporated suspension flows down to the lower part of the tower together with hot air (exhaust gas), and then is led out to the downstream exhaust flue through the bent passage.

このとき、熱風中に混在する懸濁物は、前記折曲通路部分で熱風の流向が下向きから上向きへと急激に転向する際に掛かる強い慣性力によって効果的に分離沈降され、塔下端部の懸濁物回収部に落下して回収される。一方、排気煙道へ導出した熱風は、下流の集塵機等を経て煙突より大気中へ放出する。   At this time, the suspension mixed in the hot air is effectively separated and settled by the strong inertial force applied when the flow direction of the hot air suddenly turns from the downward direction to the upward direction in the bent passage portion. Dropped into the suspension collection unit and collected. On the other hand, the hot air led out to the exhaust flue is discharged into the atmosphere from the chimney through a downstream dust collector and the like.

なお、前記懸濁液蒸発塔や集塵機にて回収・捕集される懸濁物が、例えば可燃性のものであれば、前記熱風発生炉のキルン本体へ供給して熱風発生用の固形燃料の一部として利用するようにしてもよい。   If the suspension collected and collected by the suspension evaporation tower or the dust collector is, for example, flammable, it is supplied to the kiln main body of the hot air generating furnace and the solid fuel for generating hot air is supplied. It may be used as a part.

このように、上記懸濁液からの懸濁物回収装置及び回収方法によれば、木質系バイオマス等の固形燃料の自燃によって発生させた熱風と噴霧した懸濁液とを直接接触させることにより、懸濁液を効果的に蒸発処理して懸濁物を分離回収することができ、従来の化石燃料を主燃料とする装置等と比較して低コストかつ低環境負荷にて回収できて好適である。   Thus, according to the suspension recovery apparatus and recovery method from the suspension, by directly contacting the hot air generated by the self-combustion of solid fuel such as woody biomass and the sprayed suspension, The suspension can be effectively evaporated to separate and recover the suspension, and it can be recovered at low cost and with a low environmental load compared to conventional fossil fuel-based devices. is there.

以下、本発明の一実施例を図面に基づいて説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図中の1は懸濁液からの懸濁物回収装置であって、木質系バイオマス等の固形燃料を主燃料として燃焼させるロータリーキルン方式のキルン本体2と、該キルン本体2での固形燃料の燃焼に伴って生じる可燃性の揮発分を燃焼分解する二次燃焼室3とからなる熱風発生炉4を備えていると共に、該熱風発生炉4の熱風通路5に連通する懸濁液蒸発塔6を備えている。また、前記懸濁液蒸発塔6には熱風(排ガス)導出用の排気煙道7を連結し、該排気煙道7の下流には熱風中のダスト捕捉用の集塵機であるバグフィルタ8を備えていると共に、その下流側には排風量調整用のメインダンパー9、排風機10及び煙突11を備えている。   In the figure, reference numeral 1 denotes an apparatus for recovering a suspension from a suspension, which is a rotary kiln type kiln body 2 that burns solid fuel such as woody biomass as a main fuel, and combustion of the solid fuel in the kiln body 2 And a suspension evaporating tower 6 communicating with a hot air passage 5 of the hot air generating furnace 4. I have. The suspension evaporating tower 6 is connected to an exhaust flue 7 for deriving hot air (exhaust gas), and a bag filter 8 which is a dust collector for capturing dust in the hot air is provided downstream of the exhaust flue 7. At the downstream side, a main damper 9 for adjusting the amount of exhaust air, an exhaust fan 10 and a chimney 11 are provided.

前記熱風発生炉4のキルン本体2は、円筒状の鋼板の内壁面に、例えば、耐火煉瓦やセラミック等の耐熱性のキャスター12を周設し、基台13上に回転自在に傾斜支持すると共に、その一端部には固形燃料投入用の投入シュート14、キルン本体2内の予熱や種火用等に用いられ、石油や天然ガス等の化石燃料を使用する小型の助燃バーナ15、キルン本体2内に投入した固形燃料を自燃で燃焼させるのに必要な燃焼用空気を吹き込むようにして供給する燃焼用空気供給ファン16を備えている一方、他端部には前記二次燃焼室3を直結している。   The kiln main body 2 of the hot-air generating furnace 4 is provided with a heat-resistant caster 12 such as refractory bricks or ceramics on the inner wall surface of a cylindrical steel plate, and is inclined and supported rotatably on a base 13. , One end of the charging chute 14 for charging the solid fuel, preheating in the kiln main body 2 and for the purpose of igniting fire, etc., a small auxiliary burner 15 using fossil fuel such as oil and natural gas, the kiln main body 2 A combustion air supply fan 16 is provided for supplying the combustion air necessary for burning the solid fuel charged therein by self-combustion, and the secondary combustion chamber 3 is directly connected to the other end. doing.

前記二次燃焼室3は、キルン本体2と同様に、その内壁面に耐熱性のキャスター(図示せず)を貼着していると共に、キルン本体2より導入される可燃性の揮発分が約2秒程度以上かけて下流側の熱風通路5へと導出されるように縦長の構造としており、木質系バイオマス等の固形燃料を燃焼させた際に生じる揮発分や炭化物等の飛散性未燃分が、高温に維持された前記二次燃焼室3内を通過する間に完全に燃焼分解されるようにしている。また、図中の17は、前記助燃バーナ15と同様に、化石燃料を使用して二次燃焼室3内に熱風を供給する小型の補助バーナであって、例えば、熱風発生炉4の運転初期時などに燃焼させて二次燃焼室3内を予熱し、予熱完了後は消火するようにしている。   Like the kiln main body 2, the secondary combustion chamber 3 has a heat-resistant caster (not shown) attached to its inner wall surface, and the combustible volatile matter introduced from the kiln main body 2 is about It has a vertically long structure so that it can be led to the hot air passage 5 on the downstream side over about 2 seconds, and volatile matter and carbonaceous matter that are scattered when burning solid fuel such as woody biomass Is completely decomposed by combustion while passing through the secondary combustion chamber 3 maintained at a high temperature. Reference numeral 17 in the figure denotes a small auxiliary burner that supplies hot air into the secondary combustion chamber 3 using fossil fuel, like the auxiliary combustion burner 15. The secondary combustion chamber 3 is preheated by burning at some time and the fire is extinguished after the preheating is completed.

また、前記二次燃焼室3の下部には、キルン本体2から排出される木質系バイオマス等の固形燃料の燃焼灰や炭化物等の固形未燃分を一時的に貯留する貯留ホッパ18を備えていると共に、該貯留ホッパ18の下端部には燃焼灰排出用の排出ゲート19を開閉自在に備えている。また、前記排出ゲート19の上位には再燃焼用空気供給手段20を備えており、キルン本体2内で燃焼しきれずに貯留ホッパ18内へ排出される固形未燃分に対して前記再燃焼用空気供給手段20より所定量の再燃焼用空気を吹き込むことにより、固形未燃分を十分に燃焼分解させ、木質系バイオマス等の固形燃料の発熱量を無駄なく有効活用できるようにしている。   In addition, a storage hopper 18 for temporarily storing solid unburned components such as combustion ash and carbide of solid fuel such as woody biomass discharged from the kiln main body 2 is provided at the lower part of the secondary combustion chamber 3. In addition, a discharge gate 19 for discharging combustion ash is provided at the lower end of the storage hopper 18 so as to be freely opened and closed. Further, a recombustion air supply means 20 is provided above the discharge gate 19 so that the solid unburned portion discharged into the storage hopper 18 without being completely combusted in the kiln main body 2 is used for the recombustion. By blowing a predetermined amount of recombustion air from the air supply means 20, the solid unburned portion is sufficiently burned and decomposed, so that the calorific value of solid fuel such as woody biomass can be effectively utilized without waste.

また、前記二次燃焼室3の上部付近には、固形燃料を燃焼させて発生させた高温の熱風を下流の懸濁液蒸発塔6へ供給する熱風通路5を連結していると共に、二次燃焼室3の上端部には、排気ダンパー21を開閉自在に備えており、緊急時等に開放して二次燃焼室3内の熱風を放出可能なようにしている。   Near the upper portion of the secondary combustion chamber 3 is connected a hot air passage 5 for supplying high-temperature hot air generated by burning solid fuel to the downstream suspension evaporation tower 6. An exhaust damper 21 is provided at the upper end of the combustion chamber 3 so as to be openable and closable, and is opened in an emergency or the like so that hot air in the secondary combustion chamber 3 can be discharged.

前記懸濁液蒸発塔6は、二次燃焼室3より導入される高温の熱風が約4秒程度かけて下流側の排気煙道7へと導出されるように、二次燃焼室3と同様に縦長の構造としており、塔上部には複数の、例えば2〜8本程度の懸濁液噴霧ノズル22を、それぞれの噴霧先を前記熱風通路5から導入される熱風と直接接触するように塔中心側へ向けて取り付けている。また、前記懸濁液蒸発塔6の近傍には、各種の懸濁物を含んだ懸濁液を貯留する懸濁液タンク23を備え、該懸濁液タンク23と前記懸濁液噴霧ノズル22とを懸濁液供給配管24にて連結していると共に、該懸濁液供給配管24の途中には懸濁液圧送用のポンプ25と、流量調整用バルブ26とを介在させている。   The suspension evaporation tower 6 is the same as the secondary combustion chamber 3 so that hot hot air introduced from the secondary combustion chamber 3 is led out to the exhaust flue 7 on the downstream side in about 4 seconds. In the upper part of the tower, a plurality of suspension spray nozzles 22, for example, about 2 to 8, are provided so that each spray destination is in direct contact with hot air introduced from the hot air passage 5. It is attached toward the center side. In addition, a suspension tank 23 for storing a suspension containing various suspensions is provided in the vicinity of the suspension evaporation tower 6, and the suspension tank 23 and the suspension spray nozzle 22 are provided. Are connected by a suspension supply pipe 24, and a suspension pressure-feeding pump 25 and a flow rate adjusting valve 26 are interposed in the middle of the suspension supply pipe 24.

また、前記懸濁液蒸発塔6には、図2に示すように、塔上部に熱風通路5を、塔下部に排気煙道7を連通し、前記熱風通路5より塔内に導入した熱風が塔上部側から塔下部側に向けて流下するように構成している一方、塔内には前記熱風の流向を、図中の実線矢印で示すように、下向きから上向きへと急激に転向させるように、塔の水平断面略中心部付近に下方へ向けて熱風導出用の開口部27を開口し、該開口部27から塔側壁方向へ向けて略直角に折曲形成してなる折曲通路28を前記排気煙道7に連通して慣性集塵機構を備えると共に、塔下端部には懸濁液から分離した懸濁物Wを一時貯留するホッパ部29と、ダンパーゲート30を開閉自在に有した排出部31とからなる懸濁物回収部32を備えている。   In addition, as shown in FIG. 2, the suspension evaporating tower 6 is connected with a hot air passage 5 at the top of the tower and an exhaust flue 7 at the bottom of the tower, and hot air introduced into the tower through the hot air passage 5 While it is configured to flow down from the tower upper side toward the tower lower side, the hot air flow direction is rapidly changed from downward to upward as indicated by the solid arrow in the figure. Further, an opening 27 for hot air derivation is opened downward in the vicinity of the substantially central portion of the horizontal section of the tower, and a bent passage 28 formed by bending from the opening 27 toward the side wall of the tower at a substantially right angle. And an inertia dust collecting mechanism in communication with the exhaust flue 7, and a hopper 29 for temporarily storing the suspension W separated from the suspension and a damper gate 30 at the lower end of the tower so as to be freely opened and closed. A suspension collection unit 32 including a discharge unit 31 is provided.

前記水噴霧ノズル22は、懸濁物を含んだ懸濁液を所定圧力の空気と共に噴射する、図3に示すような、外部混合型の二流体ノズルであって、懸濁液噴射用の内管22aと、圧縮空気噴射用の外管22bとからなり、前記懸濁液タンク23より懸濁液供給配管24を介して供給される懸濁液を前記内管22aへ、またコンプレッサ33よりエア供給配管34を介して供給される所定圧力の空気を前記外管22bへそれぞれ送り出し、前記内管22a先端部より噴射する懸濁液を外管22bより送り出される高圧空気にて吹き飛ばして微粒化しながら熱風に向けて噴霧する構成としている。   The water spray nozzle 22 is an external mixing type two-fluid nozzle as shown in FIG. 3 for injecting a suspension containing a suspension together with air of a predetermined pressure. The suspension 22 is composed of a pipe 22a and an outer pipe 22b for compressed air injection. The suspension supplied from the suspension tank 23 via the suspension supply pipe 24 is supplied to the inner pipe 22a and from the compressor 33. While air of a predetermined pressure supplied through the supply pipe 34 is sent to the outer pipe 22b, and the suspension sprayed from the tip of the inner pipe 22a is blown away by the high-pressure air sent from the outer pipe 22b and atomized. It is configured to spray toward hot air.

図中の35は排ガス温度センサであって、該排ガス温度センサ35にて検出される排ガス温度を懸濁液噴霧量制御器36に逐次取り込む一方、該懸濁液噴霧量制御器36には排ガスの露点温度として、例えば110〜120℃程度の温度値を予め設定しておき、取り込んだ排ガス温度が前記露点温度を下回れば前記流量調整用バルブ26の開度を絞る方向へ調整制御するようにしている。   In the figure, reference numeral 35 denotes an exhaust gas temperature sensor. The exhaust gas temperature detected by the exhaust gas temperature sensor 35 is sequentially taken into the suspension spray amount controller 36, while the suspension spray amount controller 36 receives the exhaust gas temperature. As the dew point temperature, for example, a temperature value of about 110 to 120 ° C. is set in advance, and when the exhaust gas temperature taken in is lower than the dew point temperature, the opening control of the flow rate adjusting valve 26 is adjusted and controlled. ing.

上記構成とすることにより、例えば、安定供給の困難な木質系バイオマス等の固形燃料の性状(例えば、含水率等)や供給量等のバラツキによって熱風の保有熱量が大きく変動する場合でも、特に保有熱量が急激に低下した場合でも、排ガスの温度を少なくとも前記露点温度以上に維持でき、懸濁液蒸発塔6下流側のバグフィルタ8や煙突11等での結露の発生を未然に防止できるように図っている。   By adopting the above configuration, for example, even when the amount of heat held by hot air varies greatly due to variations in the properties (for example, moisture content) of solid fuel such as woody biomass that is difficult to stably supply and the supply amount, etc. Even when the amount of heat suddenly decreases, the temperature of the exhaust gas can be maintained at least above the dew point temperature, and condensation can be prevented from occurring in the bag filter 8 or the chimney 11 on the downstream side of the suspension evaporation tower 6. I am trying.

図中の37は外気導入口であって、例えば、固形燃料の性状等のバラツキから、熱風の保有熱量が急激に上昇した場合に、前記外気導入口37を開放して外気(冷気)を排気煙道7内に導入し、排ガス温度を低下させて下流側のバグフィルタ8の焼損を防止できるように図っている。   In the figure, reference numeral 37 denotes an outside air introduction port. For example, when the amount of heat held by hot air rises sharply due to variations in properties of solid fuel, the outside air introduction port 37 is opened to exhaust outside air (cold air). It is introduced into the flue 7 so that the exhaust gas temperature can be lowered to prevent the bag filter 8 on the downstream side from being burned out.

なお、上記のように、木質系バイオマス等の固形燃料は安定供給が困難であることより、例えば、前記熱風通路5等に熱風温度検出用の熱風温度センサと、熱風量検出用の流量センサとを備え、これら各センサにて逐次検出される熱風温度と熱風量とから熱風の保有熱量を逐次求め、この求めた保有熱量に基づいて前記流量調整用バルブ26の開度を調整し、前記懸濁液噴霧ノズル22から噴霧する懸濁液が極力残らないように(懸濁液蒸発塔6内にドレン水等を発生させないように)しながらも、蒸発処理できる最大限度程度の噴霧量となるように調整制御するようにすると、熱風の保有熱量が大きく変動する場合でも、懸濁液をそれに追随させるように過不足なく噴霧して適正に蒸発処理することが可能となる。   As described above, since solid fuel such as woody biomass is difficult to stably supply, for example, a hot air temperature sensor for detecting hot air temperature in the hot air passage 5 and the like, a flow sensor for detecting hot air amount, The amount of heat held by the hot air is sequentially obtained from the hot air temperature and the amount of hot air sequentially detected by each of these sensors, the opening degree of the flow rate adjusting valve 26 is adjusted based on the obtained amount of retained heat, and the suspension While the suspension sprayed from the turbid liquid spray nozzle 22 does not remain as much as possible (so that drain water or the like is not generated in the suspension evaporation tower 6), the spray amount becomes the maximum amount that can be evaporated. If adjustment control is performed in this way, even when the amount of heat held by the hot air fluctuates greatly, it is possible to appropriately evaporate by spraying the suspension without excess or deficiency so as to follow it.

また、前記熱風発生炉4のキルン本体2の助燃バーナ15側の隅部には、キルン本体2内の静圧を検出する静圧センサ38を備えていると共に、該静圧センサ38にて検出される静圧値が所定の負圧値、例えば大気圧と同等程度か、或いは大気圧よりも僅かに低い、約−10〜−30Pa程度に維持されるように、前記排気煙道7に備えたメインダンパー9の開度、或いは排風機10の回転数を調整制御する静圧/排風量制御器39を備えており、前記同様に、固形燃料の性状等のバラツキに由来する熱風の保有熱量の変動などから、前記懸濁液蒸発塔6で発生する水蒸気量が大きく変動する場合でも、キルン本体2両端の隙間等からの熱風や水蒸気の噴き出しを防止しながらも、熱風温度を低下させる要因となる外気(冷気)の侵入を極力抑えられ、懸濁液を効率よく蒸発処理できるように図っている。   In addition, a static pressure sensor 38 for detecting the static pressure in the kiln body 2 is provided at a corner of the kiln body 2 of the hot air generating furnace 4 on the auxiliary burner 15 side. The exhaust flue 7 is provided so that the static pressure value to be maintained is a predetermined negative pressure value, for example, about −10 to −30 Pa, which is approximately equal to or slightly lower than the atmospheric pressure. In addition, a static pressure / exhaust air volume controller 39 for adjusting and controlling the opening of the main damper 9 or the rotational speed of the exhaust fan 10 is provided, and similarly to the above, the amount of heat held by the hot air derived from variations in the properties of the solid fuel, etc. Even when the amount of water vapor generated in the suspension evaporation tower 6 fluctuates greatly due to fluctuations in the temperature, etc., the factor that lowers the hot air temperature while preventing hot air and water vapor from being expelled from the gaps at both ends of the kiln body 2 As much as possible of outside air (cold air) intrusion Erare is aimed to the suspension can be efficiently evaporated to.

そして、上記構成の懸濁液からの懸濁物回収装置1を使用し、例えば木質系バイオマス等を固形燃料として燃焼させ、発生した熱風を熱源として各種の懸濁物を含んだ懸濁液を蒸発させて懸濁物を分離回収するときには、先ず、前記熱風発生炉4のキルン本体2の助燃バーナ15、及び二次燃焼室3の補助バーナ17をそれぞれ燃焼させ、キルン本体2内及び二次燃焼室3内をそれぞれ予熱後、前記キルン本体2内に木質系バイオマス等の固形燃料を所定量ずつ投入して着火燃焼させると共に、燃焼用空気供給ファン16から固形燃料の投入量に見合った燃焼用空気をキルン本体2内に吹き込み、前記固形燃料の燃焼が安定してくれば助燃バーナ15、及び補助バーナ17を消火して固形燃料を自燃状態で燃焼させる一方、前記燃焼に伴って生じる可燃性の揮発分は前記二次燃焼室3にて燃焼分解させて高温の熱風を発生させる。   Then, using the suspension recovery apparatus 1 from the suspension having the above-described configuration, for example, burning woody biomass or the like as a solid fuel, and using the generated hot air as a heat source, suspensions containing various suspensions are used. When evaporating and separating and recovering the suspension, first, the auxiliary burner 15 of the kiln main body 2 of the hot-air generating furnace 4 and the auxiliary burner 17 of the secondary combustion chamber 3 are burned, respectively, in the kiln main body 2 and in the secondary After preheating each of the combustion chambers 3, a predetermined amount of solid fuel such as woody biomass is introduced into the kiln body 2 for ignition and combustion, and combustion commensurate with the amount of solid fuel input from the combustion air supply fan 16. When the air is blown into the kiln body 2 and the combustion of the solid fuel is stabilized, the auxiliary burner 15 and the auxiliary burner 17 are extinguished and the solid fuel is burned in a self-burning state. Jill flammable volatiles generates hot air at high temperatures by burning decompose at the secondary combustion chamber 3.

そして、前記二次燃焼室3にて発生させた高温の、例えば約800℃程度の熱風は、熱風通路5を介して下流の懸濁液蒸発塔6に導入し、この高温の熱風に対して前記懸濁液噴霧ノズル22より所定量の懸濁液を噴霧し、熱風と直接的に接触させながら懸濁液を蒸発させていく。そして、蒸発して気化した懸濁液は、懸濁液との熱交換によって、例えば約180℃程度に冷却された熱風(排ガス)と共に塔下部側へ向けて流下した後、前記折曲通路28を介して下流の排気煙道7へと導出する。   The hot air generated in the secondary combustion chamber 3, for example, about 800 ° C., is introduced to the downstream suspension evaporation tower 6 via the hot air passage 5, and the hot air is A predetermined amount of suspension is sprayed from the suspension spray nozzle 22, and the suspension is evaporated while being in direct contact with hot air. The evaporated and vaporized suspension flows down toward the lower part of the tower together with hot air (exhaust gas) cooled to, for example, about 180 ° C. by heat exchange with the suspension. To the downstream exhaust flue 7.

このとき、前記懸濁液の蒸発に伴って熱風中に分散して混在する懸濁物Wは、前記折曲通路28の開口部27で熱風の流向が下向きから上向きへと急激に転向(反転)する際に掛かる下向きへの強い慣性力によって効果的に分離沈降され、懸濁液蒸発塔6下端部に備えた懸濁物回収部32に落下して回収される。一方、排気煙道7へ導出した懸濁液の水蒸気を含んだ熱風は、下流のバグフィルタ8を経て煙突11より大気中へ放出する。   At this time, the suspension W dispersed and mixed in the hot air as the suspension evaporates rapidly changes (inverted) from the downward direction to the upward direction in the flow direction of the hot air at the opening 27 of the bent passage 28. ) Is effectively separated and settled by a strong downward inertial force applied to the suspension, and dropped to the suspension collection unit 32 provided at the lower end of the suspension evaporation tower 6 to be collected. On the other hand, the hot air containing the water vapor of the suspension led to the exhaust flue 7 is discharged into the atmosphere from the chimney 11 through the downstream bag filter 8.

なお、前記懸濁液蒸発塔6やバグフィルタ8にて回収・捕集される懸濁物W、W′が、例えば可燃性のものであれば、図1の二点鎖線にて示すように、前記熱風発生炉4のキルン本体2へ随時供給して熱風発生用の固形燃料の一部として利用するようにしてもよい。   If the suspensions W and W ′ collected and collected by the suspension evaporation tower 6 and the bag filter 8 are flammable, for example, as shown by a two-dot chain line in FIG. The hot air generating furnace 4 may be supplied to the kiln main body 2 at any time and used as part of solid fuel for generating hot air.

また、懸濁液蒸発塔6にて懸濁液の噴霧に伴って発生した水蒸気は、冷却された熱風と共に排気煙道7より導出されるが、固形燃料の性状等のバラツキによって熱風の保有熱量が変動することより、前記水蒸気量も大きく変動する可能性があるものの、前記静圧/排風量制御器39にてキルン本体2内の静圧を所定の負圧値に維持するように排風量を制御しているため、キルン本体2両端の隙間等からの噴き出しを防止しつつ、熱風温度を低下させる要因となる外気(冷気)の進入を極力抑えられ、懸濁液を効率よく蒸発処理できる。   In addition, the water vapor generated by the suspension evaporation tower 6 as a result of spraying the suspension is led out from the exhaust flue 7 together with the cooled hot air, but the amount of heat retained by the hot air due to variations in the properties of the solid fuel. Since the water vapor amount may fluctuate greatly, the amount of exhaust air so that the static pressure / exhaust air amount controller 39 maintains the static pressure in the kiln body 2 at a predetermined negative pressure value. Therefore, the suspension can be efficiently evaporated while preventing intrusion from the gaps at both ends of the kiln body 2 while suppressing the entry of outside air (cold air) that causes a decrease in the temperature of hot air as much as possible. .

このように、上記懸濁液からの懸濁物回収装置1及び回収方法によれば、木質系バイオマス等の固形燃料の自燃によって発生させた熱風に対して懸濁液を直接噴霧することにより、懸濁液を効率よく蒸発して懸濁物を分離回収することができ、低コストかつ低環境負荷にて回収できて好適である。   Thus, according to the suspension collection device 1 and the collection method from the suspension, by directly spraying the suspension against the hot air generated by the self-combustion of solid fuel such as woody biomass, The suspension can be efficiently evaporated to separate and recover the suspension, which is preferable because it can be recovered at low cost and low environmental load.

なお、前記熱風発生炉4に投入する固形燃料としては、前記実施例のように、木質系バイオマスに限定されるものではなく、例えばRPFやRDF等の固形燃料も低コスト化と低環境負荷を期待できて有効に採用することができる。   The solid fuel to be introduced into the hot air generating furnace 4 is not limited to woody biomass as in the above-described embodiment. For example, solid fuels such as RPF and RDF also have low cost and low environmental load. It can be expected and used effectively.

本発明は、各種の懸濁物を含んだ様々な懸濁液から懸濁物を分離回収する場合に広く利用することができる。   The present invention can be widely used when a suspension is separated and recovered from various suspensions including various suspensions.

1…懸濁液からの懸濁物回収装置 2…キルン本体
3…二次燃焼室 4…熱風発生炉
5…熱風通路 6…懸濁液蒸発塔
7…排気煙道 8…バグフィルタ(集塵機)
15…助燃バーナ 16…燃焼用空気供給ファン
22…懸濁液噴霧ノズル 23…懸濁液タンク
24…懸濁液供給配管 25…ポンプ
26…流量調整用バルブ 28…折曲通路
32…懸濁物回収部 33…コンプレッサ
34…エア供給配管 35…排ガス温度センサ
36…懸濁液噴霧量制御器 38…静圧センサ
39…静圧/排風量制御器
DESCRIPTION OF SYMBOLS 1 ... Suspension recovery apparatus from suspension 2 ... Kiln main body 3 ... Secondary combustion chamber 4 ... Hot-air generating furnace 5 ... Hot-air passage 6 ... Suspension evaporation tower 7 ... Exhaust flue 8 ... Bag filter (dust collector)
DESCRIPTION OF SYMBOLS 15 ... Combustion burner 16 ... Combustion air supply fan 22 ... Suspension spray nozzle 23 ... Suspension tank 24 ... Suspension supply piping 25 ... Pump 26 ... Flow control valve 28 ... Bending path 32 ... Suspension Recovery unit 33 ... Compressor 34 ... Air supply pipe 35 ... Exhaust gas temperature sensor 36 ... Suspension spray amount controller 38 ... Static pressure sensor 39 ... Static pressure / exhaust air amount controller

Claims (5)

助燃バーナ及び燃焼用空気供給ファンを有する固形燃料燃焼用のキルン本体と、該キルン本体内での固形燃料の燃焼に伴って生じる揮発分を燃焼分解する二次燃焼室とからなる熱風発生炉を備えると共に、該熱風発生炉の熱風通路に連通する懸濁液蒸発塔と、該懸濁液蒸発塔の上部に取り付けた懸濁液噴霧ノズルと、懸濁液タンク内に貯留した懸濁液を吸い込んで前記懸濁液噴霧ノズルに圧送するポンプとを備えたことを特徴とする懸濁液からの懸濁物回収装置。   A hot air generating furnace comprising a kiln main body for solid fuel combustion having an auxiliary combustion burner and a combustion air supply fan, and a secondary combustion chamber for combusting and decomposing volatiles generated by the combustion of the solid fuel in the kiln main body. A suspension evaporating tower communicating with the hot air passage of the hot air generating furnace, a suspension spray nozzle attached to an upper portion of the suspension evaporating tower, and a suspension stored in the suspension tank. An apparatus for recovering a suspension from a suspension, comprising: a pump that sucks and pumps the suspension to a suspension spray nozzle. 前記懸濁液蒸発塔は、塔上部に熱風通路を、塔下部に排気煙道を連通し、塔内には熱風を下向きから上向きへと転向させる折曲通路を前記排気煙道に連通して慣性集塵機構を備えると共に、塔下端部には懸濁液から分離した懸濁物を回収する懸濁物回収部を備えたことを特徴とする請求項1記載の懸濁液からの懸濁物回収装置。   In the suspension evaporation tower, a hot air passage is connected to the upper part of the tower, an exhaust flue is connected to the lower part of the tower, and a bent passage for turning the hot air from downward to upward is connected to the exhaust flue in the tower. The suspension from a suspension according to claim 1, further comprising an inertia dust collection mechanism, and a suspension recovery unit for recovering the suspension separated from the suspension at the lower end of the tower. Recovery device. 前記懸濁液噴霧ノズルは、所定圧力の空気とともに噴射する二流体ノズルとし、懸濁液を微粒化して熱風中に噴霧して蒸発させることを特徴とする請求項1または2記載の懸濁液からの懸濁物回収装置。   3. The suspension according to claim 1, wherein the suspension spray nozzle is a two-fluid nozzle that jets together with air of a predetermined pressure, and the suspension is atomized and sprayed into hot air to evaporate. Suspension recovery device from. キルン本体内にて必要な燃焼用空気を吹き込みながら木質系バイオマスを自燃によって燃焼する工程と、前記燃焼に伴って生じる揮発分を二次燃焼室にて燃焼分解させて高温の熱風を発生する工程と、前記発生した熱風と噴霧する懸濁液との間の直接的な接触により懸濁液を蒸発させる工程と、前記懸濁液の蒸発後に残る懸濁物を分離回収する工程とを含むことを特徴とする懸濁液からの懸濁物回収方法。   A step of burning woody biomass by self-combustion while blowing necessary combustion air in the kiln body, and a step of generating high-temperature hot air by burning and decomposing volatile components accompanying the combustion in a secondary combustion chamber And evaporating the suspension by direct contact between the generated hot air and the suspension to be sprayed, and separating and collecting the suspension remaining after the evaporation of the suspension. A method for recovering a suspension from a suspension. 前記懸濁物を分離回収する工程にて回収した懸濁物を前記燃焼工程に供給する工程を含むことを特徴とする請求項4記載の懸濁液からの懸濁物回収方法。   The method for recovering a suspension from a suspension according to claim 4, further comprising a step of supplying the suspension recovered in the step of separating and recovering the suspension to the combustion step.
JP2017159766A 2017-08-22 2017-08-22 Suspension recovery device and recovery method Active JP7017833B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017159766A JP7017833B2 (en) 2017-08-22 2017-08-22 Suspension recovery device and recovery method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017159766A JP7017833B2 (en) 2017-08-22 2017-08-22 Suspension recovery device and recovery method

Publications (2)

Publication Number Publication Date
JP2019037914A true JP2019037914A (en) 2019-03-14
JP7017833B2 JP7017833B2 (en) 2022-02-09

Family

ID=65727278

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017159766A Active JP7017833B2 (en) 2017-08-22 2017-08-22 Suspension recovery device and recovery method

Country Status (1)

Country Link
JP (1) JP7017833B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021036839A (en) * 2019-09-05 2021-03-11 倉敷紡績株式会社 Bedding reproducer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050050759A1 (en) * 2003-08-11 2005-03-10 Manufacturing And Technology Conversion International, Inc. Efficient and cost-effective biomass drying
JP2011131168A (en) * 2009-12-24 2011-07-07 Fukuoka Prefecture Spray granulation apparatus and spray granulation method
JP2012081490A (en) * 2010-10-08 2012-04-26 Shinagawa Refractories Co Ltd Method for manufacturing granular mold powder for continuous cast of steel
JP2017096554A (en) * 2015-11-24 2017-06-01 日工株式会社 Wooden chip drying device and drying method for biomass power generation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050050759A1 (en) * 2003-08-11 2005-03-10 Manufacturing And Technology Conversion International, Inc. Efficient and cost-effective biomass drying
JP2011131168A (en) * 2009-12-24 2011-07-07 Fukuoka Prefecture Spray granulation apparatus and spray granulation method
JP2012081490A (en) * 2010-10-08 2012-04-26 Shinagawa Refractories Co Ltd Method for manufacturing granular mold powder for continuous cast of steel
JP2017096554A (en) * 2015-11-24 2017-06-01 日工株式会社 Wooden chip drying device and drying method for biomass power generation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021036839A (en) * 2019-09-05 2021-03-11 倉敷紡績株式会社 Bedding reproducer
JP7304777B2 (en) 2019-09-05 2023-07-07 倉敷紡績株式会社 Litter regeneration device and litter regeneration method

Also Published As

Publication number Publication date
JP7017833B2 (en) 2022-02-09

Similar Documents

Publication Publication Date Title
TWI554730B (en) Smokeless incinerator and power generation system and heat exchange system using same
JP4566043B2 (en) Wood pellet combustion equipment
JP2016191539A (en) Stoker type waste incinerator and waste incineration method
CN201152531Y (en) Industrial dangerous waste incineration processing equipment for realizing multiple physical states
CN201688418U (en) Oil sludge incinerator
CN101109509A (en) Rotation burning type burning device
CN102042602B (en) Processing method and device for incinerating toxic waste liquid by smoke concentration and gasification
JP7017833B2 (en) Suspension recovery device and recovery method
JP2007163078A (en) Waste disposal method and device
JP5871207B2 (en) Waste incinerator and waste incineration method
JP2013257065A (en) Waste incinerator, and method of incinerating waste
JP6587349B2 (en) Wood chip dryer for biomass power generation and drying method
JP2007078197A (en) Incinerator and incinerating method of waste
JP6455717B2 (en) Grate-type waste incinerator and waste incineration method
KR101536280B1 (en) Heating apparatus with fuel preheating system
JP5956210B2 (en) Start-up method of pressurized flow furnace system
JP4359768B2 (en) Boiler equipment
CN207065589U (en) A kind of salt bearing liquid wastes processing unit
JP2013200086A5 (en)
JP6443758B2 (en) Grate-type waste incinerator and waste incineration method
JP2015209992A (en) Waste incineration treatment equipment and waste incineration treatment method
JP5818094B2 (en) Waste incinerator
CN106642132A (en) Small efficient household garbage incinerator
WO2005121646A1 (en) Tuyere structure of waste fusion furnace and combustible dust blowing method
JP6965842B2 (en) Waste incinerator and waste incinerator method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200608

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20210707

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20210823

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220127

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220127

R150 Certificate of patent or registration of utility model

Ref document number: 7017833

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150