JP2005040648A

JP2005040648A - Method and apparatus for transporting offensive odor and corrosive gas

Info

Publication number: JP2005040648A
Application number: JP2003199832A
Authority: JP
Inventors: Yoshiyuki Abe; 佳之阿部; Nobuo Ito; 信雄伊藤; Naoteru Fukushige; 直輝福重; Takao Yagisawa; 隆雄八木沢; Eiichi Maruyama; 栄一丸山; Kazue Okuda; 和枝奥田; Ryoichi Nishihara; 良一西原; Koichi Hara; 宏一原
Original assignee: Orion Machinery Co Ltd; National Agriculture and Bio Oriented Research Organization NARO
Current assignee: Orion Machinery Co Ltd; National Agriculture and Bio Oriented Research Organization NARO
Priority date: 2003-07-22
Filing date: 2003-07-22
Publication date: 2005-02-17

Abstract

<P>PROBLEM TO BE SOLVED: To transport/supply malodorous substances such as offensive odors and corrosive gases produced from stock excreta to a biological deodorization tank or a chemical deodorization tank by sucking the substances noncontactwise with a fan and forming a tubular material from a material which is not corroded by the substances. <P>SOLUTION: An apparatus is equipped with the general purpose fan 2 which sucks fresh air 2a to generate pressure air, a blast pipe 3 which is connected with the fan 2 to supply air, a nozzle 4 which is set at the tip of the blast pipe 3 and ejects the pressure air as a driving flow 2a, a parallel pipe 5 which has a prescribed clearance 6 between it and the nozzle 4 and is made to face an opening 5a, and a diffuser 8 which sucks the malodorous substances 7 from the clearance 6 into the parallel pipe 5 by a negative pressure generated by the driving flow 2a supplied from the nozzle 4 into the parallel pipe 5, mixes the substances 7 with the driving flow 2a into a mixed flow 9, is installed in the rear part of the parallel pipe, and recovers the pressure of the mixed flow 9. The parallel pipe 5 and the diffuser 8 are formed from a synthetic resin material which is not corroded by the substances 7. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、家畜糞尿を処理、または貯留する間に発生する悪臭及び腐食性ガスなどの悪臭物質を吸引し、脱臭処理する生物脱臭槽や化学脱臭槽へ搬送する悪臭及び腐食性ガスの搬送方法及び装置に関する。
【０００２】
【従来の技術】
家畜糞尿を処理、または貯留する間に発生する悪臭物質には、アンモニアや硫化水素等の腐食性ガスが高湿高濃度で含まれており，これらを生物脱臭槽や化学脱臭槽で処理する工程が一般的である。しかし、これら腐食性ガスは悪臭を脱臭槽まで搬送するために使用されているファンを腐食させ、短期間で劣化させて脱臭能を著しく低下させるため、ファンと非接触で悪臭を吸引し、脱臭槽まで搬送する方法、及びその方法を実施（実用化）するための装置を開発する必要がある。
【０００３】
前記悪臭物質を生物脱臭槽や化学脱臭槽で処理する工程の先行技術例について説明する。
アンモニアを含有する原ガスをリン酸含有水溶液と接触させ、原ガス中のアンモニアをリン酸含有水溶液に吸収させて除去するアンモニア含有ガスの処理方法において、原ガスを第１吸収塔１に導入して第１のリン酸含有水溶液と接触させて原ガス中のアンモニアの大部分を吸収除去し、第１吸収塔１の処理ガスを第２吸収塔２に導入して。第２のリン酸含有水溶液と接触させることにより、残留するアンモニアを吸収除去する。第２のリン酸含有水溶液のｐＨは第１のリン酸含有水溶液のｐＨよりも低い。そして、吸収液に吸収するアンモニア当たりのリン酸使用量を低減した上で、アンモニアを高度に除去するアンモニア含有ガスの処理方法が、例えば特許文献１に開示されている。
【０００４】
アンモニア含有ガスをリン酸含有水溶液の吸収液と接触させることにより、ガス中のアンモニアをリン酸アンモニウムとして吸収させて除去する方法において、原ガスを第１吸収塔３に導入して吸収液と接触させてアンモニアを吸収除去し、処理ガスを排出する。循環槽６の吸収液の一部は循環ポンプＰで循環し、他の一部は液体肥料として取り出す。循環槽６の吸収液の電気伝導率の測定値に基いて希釈水の補給量を調節する。吸収液の電気伝導率と吸収液の（Ｎ＋Ｐ_２Ｏ_５）濃度は比例するため、電気伝導率に基いて希釈水を補給することにより吸収液濃度を自動的に制御することができる。そして、循環使用する吸収液のリン酸濃度を自動的に制御して効率的な処理を行うアンモニア含有ガスの処理方法及び処理装置が、例えば特許文献２に開示されている。
【０００５】
【特許文献１】
特開２００２−１４３６３９号
【特許文献２】
特開２００２−３６１０３８号
【０００６】
【発明が解決しようとする課題】
前記特許文献１及び特許文献２に開示されている先行技術のものは、原ガスを処理装置に供給するために汎用ファンを用いているが、そのファンについて、原ガスと接触することによる腐食対策については何も記載されておらず、ファンは短期間で劣化して脱臭能を著しく低下させることが予測される。
【０００７】
そこで本発明は、市販及び規格化されている塩化ビニル製配管材を組み合わせて簡易的な空気エゼクタを作成し、悪臭をファンとは非接触で吸引及び搬送できる方法及び装置を開発した。空気エゼクタ自体は従来より多くの工程で用いられている原理、装置であるが、塩化ビニル製配管材で簡易に空気エゼクタが作成でき、悪臭をファンに非接触で吸引して耐久性が得られる，悪臭及び腐食性ガスの搬送方法及び装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
上記の目的を達成するために本発明は、以下の手段及び構成を有することを特徴とする。
Ａ．家畜糞尿を処理、または貯留する間に発生する悪臭及び腐食性ガスなどの悪臭物質を吸引し、脱臭処理する生物脱臭槽や化学脱臭槽へ搬送する悪臭搬送手段であって、
前記悪臭搬送手段は、汎用ファンにより新鮮な空気を吸い込んで送風管により送風し、該送風管の先端にノズルを設けて駆動流として噴出し、該ノズルと所定の間隙を有して平行管の開口部を臨ませ、ノズルから平行管に吹き込まれる駆動流により発生する負圧で前記悪臭物質を平行管内に吸引して駆動流と混合させ、平行管の後部に設けたディフューザにより混合流の圧力を回復して前記生物脱臭槽や化学脱臭槽へ搬送するようにし、悪臭物質を汎用ファンに接触することなく生物脱臭槽や化学脱臭槽へ供給する。
Ｂ．前記平行管やディフューザは、前記悪臭及び腐食性ガスなどの悪臭物質により腐食されない材質により形成されている。
【０００９】
Ｃ．家畜糞尿を処理、または貯留する間に発生する悪臭及び腐食性ガスなどの悪臭物質を吸引し、脱臭処理する生物脱臭槽や化学脱臭槽へ搬送する悪臭搬送装置であって、
前記悪臭搬送装置は、新鮮な空気を吸い込んで圧力風を発生させる汎用ファンと、該汎用ファンに接続されて送風する送風管と、該送風管の先端に設けられ、圧力風を駆動流として噴出するノズルと、該ノズルと所定の間隙を有して開口部を臨ませる平行管と、前記ノズルから平行管に吹き込まれる駆動流により発生する負圧で前記間隙から悪臭物質を平行管内に吸引し、駆動流と混合させる吸引手段と、該平行管の後部に設けられ、駆動流と悪臭物質の混合流の圧力を回復させるディフューザと、からなる。
Ｄ．前記平行管やディフューザを、前記悪臭及び腐食性ガスなどの悪臭物質により腐食されない合成樹脂材により構成した。
【００１０】
【作用】
上記の手段及び構成により本発明の悪臭及び腐食性ガスの搬送方法及び装置は、以下の作用をする。
ａ．悪臭搬送手段は、汎用ファンにより新鮮な空気を吸い込んで送風管により送風し、該送風管の先端にノズルを設けて駆動流として噴出し、該ノズルと所定の間隙を有して平行管の開口部を臨ませ、ノズルから平行管に吹き込まれる駆動流により発生する負圧で前記悪臭物質を平行管内に吸引して駆動流と混合させ、平行管の後部に設けたディフューザにより混合流の圧力を回復して前記生物脱臭槽や化学脱臭槽へ搬送することで、悪臭物質を汎用ファンに接触することなく生物脱臭槽や化学脱臭槽へ搬送して供給し、汎用ファンの耐久性を向上させる。また、ノズルと平行管とで空気エゼクタを簡易に作成する。
ｂ．平行管やディフューザは、前記悪臭及び腐食性ガスなどの悪臭物質により腐食されない材質により形成されることで、平行管やディフューザの耐久性が向上し、脱臭能を向上させる。
【００１１】
ｃ．悪臭搬送装置は、新鮮な空気を吸い込んで圧力風を発生させる汎用ファンと、該汎用ファンに接続されて送風する送風管と、該送風管の先端に設けられ、圧力風を駆動流として噴出するノズルと、該ノズルと所定の間隙を有して開口部を臨ませる平行管と、前記ノズルから平行管に吹き込まれる駆動流により発生する負圧で前記間隙から悪臭物質を平行管内に吸引し、駆動流と混合させる吸引手段と、該平行管の後部に設けられ、駆動流と悪臭物質の混合流の圧力を回復させるディフューザとを備えることで、悪臭物質を汎用ファンに接触させることなく吸引して生物脱臭槽や化学脱臭槽へ搬送し、供給する。また、悪臭物質を平行管内に吸引する吸引手段は簡単に構成される。
ｄ．平行管やディフューザを、悪臭及び腐食性ガスなどの悪臭物質により腐食されない合成樹脂材により構成することで、平行管やディフューザの耐久性が向上し、搬送装置全体の機能性を高める。
【００１２】
【発明の実施の形態】
以下、本発明の実施の一形態を添付の図面を参照して具体的に説明する。
図１に示す悪臭搬送装置１は、本発明による原理を実用化するために試作され、各種の試験を実施したものである。この悪臭搬送装置１は、図示しないが家畜糞尿を処理、または貯留する間に発生する悪臭及び腐食性ガスなどの悪臭物質を吸引し、脱臭処理する生物脱臭槽や化学脱臭槽へ搬送し、供給するのに用いられる。
【００１３】
前記悪臭搬送装置１は、新鮮な空気２ａを吸い込んで圧力風を発生させる汎用ファン２の送風口に送風管３を接続し、該送風管３の先端に圧力風を駆動流２ａとして噴出するノズル４を設けている。該送風管３及びノズル４を構成する材質は、金属でもよいが、合成樹脂（塩化ビニル）にしてももよい。特に、ノズル４には、前記悪臭及び腐食性ガスなどの悪臭物質により腐食されない材質を用いるのが好ましい。このノズル４の先端と対向して、平行管５が設けられるが、該ノズル４と平行管５の開口部５ａとの間に所定の間隙６を設けている。そして、前記ノズル４から平行管５に吹き込まれる駆動流２ａにより平行管５内に負圧（空気エゼクタ）が発生し、この負圧により、前記間隙６から悪臭物質７が２次流として平行管５内に吸引され、駆動流２ａと混合して混合流９となる吸引手段が設けられる。
【００１４】
前記平行管５の後部にディフューザ８が設けられ、ここで前記混合流９の圧力を回復させる。該ディフューザ８には供給管１０が接続されて、前記生物脱臭槽や化学脱臭槽へ混合流９を搬送し、供給する。ここで前記平行管５、ディフューザ８、供給管１０等は、前記悪臭及び腐食性ガスなどの悪臭物質７により腐食されない材質である合成樹脂（塩化ビニル）が用いられている。
【００１５】
次に、上記のように構成された悪臭搬送装置１の動作について説明する。
汎用ファン２により吸い込まれた新鮮な空気２ａは、送風管３により送風され、該送風管３の先端においてノズル４により駆動流２ａとして噴出される。ノズル４から噴出された駆動流２ａは、開口部５ａから平行管５内に吹き込まれ、その駆動流２ａにより発生する負圧（空気エゼクタ）により、悪臭物質７が間隙６を介して平行管５内に２次流として吸引され、駆動流２ａと混合されて混合流９となる。この混合流９は、ディフューザ８において圧力が回復されて、供給管１０を介して生物脱臭槽や化学脱臭槽へ搬送され、供給される。従って、悪臭物質７は、汎用ファン２に接触することなく生物脱臭槽や化学脱臭槽に搬送されることになる。また、悪臭物質７が接触する平行管５、ディフューザ８、供給管１０等は合成樹脂（塩化ビニル）により構成されているので、腐食することがなく、耐久性が優れている。
【００１６】
前記悪臭搬送装置（吸引機構）１を用いて各種の基礎試験及び実証試験を実施した。その結果の概要を説明する。
吸引機構の試験条件を表１に示す。
【表１】

【００１７】
ノズル４の径と平行管５の径の比による最大吸引条件が存在したが、背圧（脱臭槽へ搬送する場合の送風抵抗、図２及び図３参照）、ファン出力（図４参照）によって最大吸引条件は異なった。ここで、図２は背圧条件を示すグラフ、図３は吸引量の測定事例を示すグラフ、図４はファン出力と最大吸引量の関係を示すグラフである。
【００１８】
＜実証試験条件＞
処理対象：乳牛糞尿スラリー（６０〜１２０ｍ^３）
曝気量：２．３５ｍ^３／分（４〜６時／日の間欠曝気）
脱臭装置：土壌脱臭槽（１０．５×４＝４２ｍ^２）
実証試験の結果、１．５ｋＷのターボファンで最大１０ｍ^３／分以上の悪臭（アンモニア，硫化水素を測定）を吸引可能であった。また１年半の稼動実績を得ることができた。
【００１９】
【発明の効果】
以上説明したように本発明の悪臭及び腐食性ガスの搬送方法及び装置によれば、請求項に記載された手段及び構成を有することにより、以下の作用効果を奏することができる。
【００２０】
▲１▼．悪臭搬送手段は、汎用ファンにより新鮮な空気を吸い込んで送風管により送風し、該送風管の先端にノズルを設けて駆動流として噴出し、該ノズルと所定の間隙を有して平行管の開口部を臨ませ、ノズルから平行管に吹き込まれる駆動流により発生する負圧で前記悪臭物質を平行管内に吸引して駆動流と混合させ、平行管の後部に設けたディフューザにより混合流の圧力を回復して前記生物脱臭槽や化学脱臭槽へ搬送するので、悪臭物質を汎用ファンに接触することなく生物脱臭槽や化学脱臭槽へ搬送することができる。その結果、汎用ファンの耐久性を向上させることができる。また、空気エゼクタを簡易に作成することができる。
▲２▼．平行管やディフューザは、前記悪臭及び腐食性ガスなどの悪臭物質により腐食されない材質により形成されているので、平行管やディフューザの耐久性を向上させて、脱臭能を向上させることができる。
【００２１】
▲３▼．悪臭搬送装置は、新鮮な空気を吸い込んで圧力風を発生させる汎用ファンと、該汎用ファンに接続されて送風する送風管と、該送風管の先端に設けられ、圧力風を駆動流として噴出するノズルと、該ノズルと所定の間隙を有して開口部を臨ませる平行管と、前記ノズルから平行管に吹き込まれる駆動流により発生する負圧で前記間隙から悪臭物質を平行管内に吸引し、駆動流と混合させる吸引手段と、該平行管の後部に設けられ、駆動流と悪臭物質の混合流の圧力を回復させるディフューザと、を備えているので、悪臭物質を汎用ファンに接触させることなく吸引して生物脱臭槽や化学脱臭槽へ搬送することができる。また、悪臭物質を平行管内に吸引する吸引手段を簡単に構成することができる。
▲４▼．平行管やディフューザを、悪臭及び腐食性ガスなどの悪臭物質により腐食されない合成樹脂材により構成するので、平行管やディフューザの耐久性が向上し、搬送装置全体の機能性を高めることができる。
【図面の簡単な説明】
【図１】本発明による悪臭搬送装置の概略側面図である。
【図２】悪臭搬送装置の背圧条件を示すグラフである。
【図３】悪臭搬送装置の吸引量の測定事例を示すグラフである。
【図４】悪臭搬送装置のファン出力と最大吸引量の関係を示すグラフである。
【符号の説明】
１悪臭搬送装置
２汎用ファン２ａ新鮮な空気（駆動流）
３送風管
４ノズル
５平行管（塩化ビニル製）５ａ開口部（塩化ビニル製）
６所定の間隙
７悪臭物質
８ディフューザ（塩化ビニル製）
９混合流
１０供給管（塩化ビニル製）[0001]
BACKGROUND OF THE INVENTION
The present invention sucks malodorous substances such as malodorous and corrosive gas generated during the treatment or storage of livestock manure, and transports the malodorous and corrosive gas to a biological deodorizing tank or chemical deodorizing tank for deodorizing treatment. And an apparatus.
[0002]
[Prior art]
Malodorous substances generated during the treatment or storage of livestock manure contain corrosive gases such as ammonia and hydrogen sulfide at high humidity and high concentration, and these are processed in biological deodorization tanks and chemical deodorization tanks. Is common. However, these corrosive gases corrode the fans used to transport bad odors to the deodorization tank, degrade in a short period of time, and significantly reduce the deodorization ability. It is necessary to develop a method for transporting to the tank and an apparatus for carrying out (practical use) the method.
[0003]
The prior art example of the process which processes the said malodorous substance in a biological deodorizing tank or a chemical deodorizing tank is demonstrated.
In a method for treating an ammonia-containing gas in which ammonia-containing raw gas is brought into contact with a phosphoric acid-containing aqueous solution and ammonia in the raw gas is absorbed and removed by the phosphoric acid-containing aqueous solution, the raw gas is introduced into the first absorption tower 1. Then, it is brought into contact with the first phosphoric acid-containing aqueous solution to absorb and remove most of the ammonia in the raw gas, and the processing gas of the first absorption tower 1 is introduced into the second absorption tower 2. The remaining ammonia is absorbed and removed by contacting with the second phosphoric acid-containing aqueous solution. The pH of the second phosphoric acid-containing aqueous solution is lower than the pH of the first phosphoric acid-containing aqueous solution. And the processing method of the ammonia containing gas which removes ammonia highly after reducing the usage-amount of the phosphoric acid per ammonia which an absorption liquid absorbs is disclosed by patent document 1, for example.
[0004]
In a method in which ammonia in a gas is brought into contact with an absorption liquid of a phosphoric acid-containing aqueous solution to remove the ammonia in the gas as ammonium phosphate, the raw gas is introduced into the first absorption tower 3 and brought into contact with the absorption liquid. The ammonia is absorbed and removed, and the processing gas is discharged. Part of the absorption liquid in the circulation tank 6 is circulated by the circulation pump P, and the other part is taken out as liquid fertilizer. The replenishment amount of dilution water is adjusted based on the measured value of the electrical conductivity of the absorption liquid in the circulation tank 6. Since the electric conductivity of the absorbing liquid is proportional to the (N + P ₂ O ₅ ) concentration of the absorbing liquid, the absorbing liquid concentration can be automatically controlled by supplying dilution water based on the electric conductivity. For example, Patent Document 2 discloses a processing method and a processing apparatus for an ammonia-containing gas that automatically controls the phosphoric acid concentration of the absorbing solution to be circulated for efficient processing.
[0005]
[Patent Document 1]
JP 2002-143639 [Patent Document 2]
JP-A-2002-361038
[Problems to be solved by the invention]
In the prior art disclosed in Patent Document 1 and Patent Document 2, a general-purpose fan is used to supply raw gas to the processing apparatus, and the fan has a countermeasure against corrosion due to contact with the raw gas. Nothing is described about, and it is expected that the fan will deteriorate in a short period of time and significantly reduce the deodorizing ability.
[0007]
In view of this, the present invention has developed a simple air ejector by combining commercially available and standardized vinyl chloride piping materials, and has developed a method and apparatus capable of sucking and transporting bad odors without contact with a fan. The air ejector itself is the principle and device used in many processes than before, but it can be easily created with piping material made of vinyl chloride, and the durability can be obtained by sucking bad odors without contacting the fan. An object of the present invention is to provide a method and apparatus for conveying malodorous and corrosive gases.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the present invention is characterized by having the following means and configurations.
A. A malodor conveying means for sucking malodorous substances such as malodorous and corrosive gas generated during processing or storage of livestock manure and transporting them to a biological deodorizing tank or chemical deodorizing tank for deodorizing treatment,
The malodor conveying means sucks fresh air with a general-purpose fan and blows it with a blower pipe, and a nozzle is provided at the tip of the blower pipe to eject it as a driving flow. The malodorous substance is sucked into the parallel pipe by negative pressure generated by the driving flow blown from the nozzle into the parallel pipe, facing the opening, and mixed with the driving flow, and the pressure of the mixed flow by the diffuser provided at the rear of the parallel pipe Is recovered and transported to the biological deodorization tank or chemical deodorization tank, and malodorous substances are supplied to the biological deodorization tank or chemical deodorization tank without contacting the general-purpose fan.
B. The parallel pipe and the diffuser are formed of a material that is not corroded by a malodorous substance such as the malodorous or corrosive gas.
[0009]
C. It is a malodor transport device that sucks malodorous substances such as malodorous and corrosive gas generated during processing or storage of livestock manure and transports them to a biological deodorizing tank or chemical deodorizing tank for deodorizing treatment,
The malodor conveying device is provided with a general-purpose fan that sucks in fresh air to generate pressure wind, a blower pipe that is connected to the general-purpose fan and blows air, and a blower pipe that is provided at the tip of the blower pipe and ejects the pressure wind as a driving flow A nozzle that has a predetermined gap with the nozzle and faces the opening, and sucks malodorous substances into the parallel pipe from the gap with a negative pressure generated by a driving flow blown from the nozzle into the parallel pipe. And suction means for mixing with the driving flow, and a diffuser provided at the rear of the parallel pipe and recovering the pressure of the driving flow and the mixed flow of malodorous substances.
D. The parallel pipe and the diffuser are made of a synthetic resin material that is not corroded by malodorous substances such as the malodorous and corrosive gases.
[0010]
[Action]
By the above means and configuration, the malodorous and corrosive gas transport method and apparatus of the present invention operate as follows.
a. The malodor conveying means sucks fresh air with a general-purpose fan and blows it with a blower pipe. A nozzle is provided at the tip of the blower pipe and ejected as a driving flow. The malodorous substance is sucked into the parallel pipe by the negative pressure generated by the driving flow blown from the nozzle into the parallel pipe and mixed with the driving flow, and the pressure of the mixed flow is adjusted by a diffuser provided at the rear of the parallel pipe. By recovering and transporting to the biological deodorization tank or chemical deodorization tank, the malodorous substance is transported and supplied to the biological deodorization tank or chemical deodorization tank without contacting the general-purpose fan, thereby improving the durability of the general-purpose fan. Moreover, an air ejector is easily created with a nozzle and a parallel tube.
b. The parallel pipe and the diffuser are formed of a material that is not corroded by the malodorous substance such as the malodorous or corrosive gas, thereby improving the durability of the parallel pipe or the diffuser and improving the deodorizing ability.
[0011]
c. The malodor conveying device is provided with a general-purpose fan that sucks in fresh air to generate a pressure wind, a blower pipe that is connected to the general-purpose fan and blows air, and a tip of the blower pipe, and ejects the pressure wind as a driving flow A nozzle, a parallel pipe that faces the opening with a predetermined gap with the nozzle, and sucks malodorous substances into the parallel pipe from the gap with a negative pressure generated by a driving flow blown into the parallel pipe from the nozzle, Suction means for mixing with the driving flow and a diffuser provided at the rear of the parallel pipe for recovering the pressure of the mixed flow of the driving flow and the malodorous material can suck the malodorous material without contacting the general-purpose fan. Transported to biological deodorization tanks and chemical deodorization tanks. Further, the suction means for sucking the malodorous substance into the parallel pipe is simply configured.
d. By configuring the parallel pipe and the diffuser with a synthetic resin material that is not corroded by malodorous substances such as malodorous and corrosive gases, the durability of the parallel pipe and the diffuser is improved and the functionality of the entire conveying apparatus is enhanced.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be specifically described with reference to the accompanying drawings.
The malodor conveying apparatus 1 shown in FIG. 1 is manufactured in order to put the principle according to the present invention into practical use, and has been subjected to various tests. Although not shown, this malodor conveying device 1 sucks malodorous substances such as odor and corrosive gas generated during processing or storage of livestock excreta, conveys them to a biological deodorizing tank or chemical deodorizing tank for deodorizing treatment, and supplies them. Used to do.
[0013]
The malodor conveying device 1 is a nozzle that connects a blower pipe 3 to a blower port of a general-purpose fan 2 that sucks fresh air 2a and generates a pressure wind, and jets the pressure wind as a driving flow 2a at the tip of the blower pipe 3 4 is provided. The material constituting the blower tube 3 and the nozzle 4 may be metal, but may be synthetic resin (vinyl chloride). In particular, the nozzle 4 is preferably made of a material that is not corroded by malodorous substances such as the malodorous and corrosive gases. A parallel tube 5 is provided facing the tip of the nozzle 4, and a predetermined gap 6 is provided between the nozzle 4 and the opening 5 a of the parallel tube 5. A negative pressure (air ejector) is generated in the parallel pipe 5 by the driving flow 2a blown from the nozzle 4 into the parallel pipe 5, and the negative pressure causes the malodorous substance 7 as a secondary flow from the gap 6. 5, suction means is provided which is sucked into the mixed flow 9 and mixed with the driving flow 2a to become a mixed flow 9.
[0014]
A diffuser 8 is provided at the rear of the parallel tube 5 where the pressure of the mixed stream 9 is restored. A supply pipe 10 is connected to the diffuser 8, and the mixed stream 9 is conveyed and supplied to the biological deodorization tank or the chemical deodorization tank. Here, the parallel pipe 5, the diffuser 8, the supply pipe 10 and the like are made of synthetic resin (vinyl chloride), which is a material that is not corroded by the malodorous substance 7 such as the malodorous or corrosive gas.
[0015]
Next, operation | movement of the malodor conveying apparatus 1 comprised as mentioned above is demonstrated.
Fresh air 2 a sucked by the general-purpose fan 2 is blown by the blower pipe 3, and is ejected as a drive flow 2 a by the nozzle 4 at the tip of the blower pipe 3. The driving flow 2a ejected from the nozzle 4 is blown into the parallel pipe 5 from the opening 5a, and the malodorous substance 7 is caused to pass through the gap 6 by the negative pressure (air ejector) generated by the driving flow 2a. Is sucked in as a secondary flow and mixed with the driving flow 2 a to become a mixed flow 9. The mixed stream 9 is restored in pressure in the diffuser 8 and is conveyed and supplied to a biological deodorization tank or a chemical deodorization tank via a supply pipe 10. Therefore, the malodorous substance 7 is conveyed to the biological deodorization tank or the chemical deodorization tank without contacting the general-purpose fan 2. Moreover, since the parallel pipe 5, the diffuser 8, the supply pipe 10, etc. which the malodorous substance 7 contacts are comprised by the synthetic resin (vinyl chloride), they do not corrode and are excellent in durability.
[0016]
Various basic tests and demonstration tests were performed using the malodor conveying device (suction mechanism) 1. An outline of the results will be described.
Table 1 shows the test conditions of the suction mechanism.
[Table 1]

[0017]
There was a maximum suction condition depending on the ratio of the diameter of the nozzle 4 and the diameter of the parallel pipe 5, but depending on the back pressure (air blowing resistance when transported to the deodorization tank, see FIGS. 2 and 3), fan output (see FIG. 4) Maximum suction conditions were different. Here, FIG. 2 is a graph showing the back pressure condition, FIG. 3 is a graph showing a measurement example of the suction amount, and FIG. 4 is a graph showing a relationship between the fan output and the maximum suction amount.
[0018]
<Verification test conditions>
Treatment target: Dairy cow manure slurry (60-120 m ³ )
Aeration amount: 2.35 m ³ / min (4-6 o'clock / day intermittent aeration)
Deodorization device: soil deodorization tank (10.5 × 4 = 42m ² )
As a result of the verification test, it was possible to suck a bad odor (measuring ammonia and hydrogen sulfide) of 10 m ³ / min or more with a 1.5 kW turbofan. In addition, we have been able to obtain a year and a half operation record.
[0019]
【The invention's effect】
As described above, according to the malodorous and corrosive gas transport method and apparatus of the present invention, the following functions and effects can be achieved by having the means and configuration described in the claims.
[0020]
(1). The malodor conveying means sucks fresh air with a general-purpose fan and blows it with a blower pipe. A nozzle is provided at the tip of the blower pipe and ejected as a driving flow. The malodorous substance is sucked into the parallel pipe by the negative pressure generated by the driving flow blown from the nozzle into the parallel pipe and mixed with the driving flow, and the pressure of the mixed flow is adjusted by a diffuser provided at the rear of the parallel pipe. Since it recovers and conveys to the said biological deodorization tank or a chemical deodorization tank, a malodorous substance can be conveyed to a biological deodorization tank or a chemical deodorization tank, without contacting a general purpose fan. As a result, the durability of the general-purpose fan can be improved. Also, an air ejector can be easily created.
(2). Since the parallel pipe and the diffuser are made of a material that is not corroded by the malodorous substance such as the malodorous or corrosive gas, the durability of the parallel pipe or the diffuser can be improved and the deodorizing ability can be improved.
[0021]
(3). The malodor conveying device is provided with a general-purpose fan that sucks in fresh air to generate pressure wind, a blower pipe that is connected to the general-purpose fan and blows air, and a tip of the blower pipe, and jets the pressure wind as a driving flow A nozzle, a parallel pipe that faces the opening with a predetermined gap with the nozzle, and sucks malodorous substances into the parallel pipe from the gap with a negative pressure generated by a driving flow blown into the parallel pipe from the nozzle, A suction means for mixing with the driving flow and a diffuser provided at the rear of the parallel pipe and recovering the pressure of the mixed flow of the driving flow and the malodorous substance are provided, so that the malodorous substance is not brought into contact with the general-purpose fan. It can be sucked and transported to a biological deodorization tank or a chemical deodorization tank. Moreover, the suction means for sucking the malodorous substance into the parallel pipe can be configured easily.
(4). Since the parallel pipe and the diffuser are made of a synthetic resin material that is not corroded by malodorous substances such as malodorous and corrosive gases, the durability of the parallel pipe and the diffuser can be improved, and the functionality of the entire conveying apparatus can be enhanced.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a malodor conveying apparatus according to the present invention.
FIG. 2 is a graph showing back pressure conditions of the malodor conveying apparatus.
FIG. 3 is a graph showing a measurement example of the suction amount of the malodor conveying apparatus.
FIG. 4 is a graph showing the relationship between the fan output and the maximum suction amount of the malodor conveying apparatus.
[Explanation of symbols]
1 Odor transport device 2 General-purpose fan 2a Fresh air (drive flow)
3 Blower pipe 4 Nozzle 5 Parallel pipe (made of vinyl chloride) 5a Opening part (made of vinyl chloride)
6 Predetermined gap 7 Odor substance 8 Diffuser (made of vinyl chloride)
9 Mixed flow 10 Supply pipe (made of vinyl chloride)

Claims

A malodor conveying means for sucking malodorous substances such as malodorous and corrosive gas generated during processing or storage of livestock manure and transporting them to a biological deodorizing tank or chemical deodorizing tank for deodorizing treatment,
The malodor conveying means sucks fresh air with a general-purpose fan and blows it with a blower pipe, and a nozzle is provided at the tip of the blower pipe to eject it as a driving flow. The malodorous substance is sucked into the parallel pipe by negative pressure generated by the driving flow blown from the nozzle into the parallel pipe, facing the opening, and mixed with the driving flow, and the pressure of the mixed flow by the diffuser provided at the rear of the parallel pipe Odor and corrosive gas suction characterized by supplying the malodorous substance to the biological deodorization tank or chemical deodorization tank without contacting the general-purpose fan Method.

2. The malodorous and corrosive gas suction method according to claim 1, wherein the parallel pipe and the diffuser are made of a material that is not corroded by a malodorous substance such as the malodorous and corrosive gas.

It is a malodor transport device that sucks malodorous substances such as malodorous and corrosive gas generated during processing or storage of livestock manure and transports them to a biological deodorizing tank or chemical deodorizing tank for deodorizing treatment,
The malodor conveying device is provided with a general-purpose fan that sucks in fresh air to generate pressure wind, a blower pipe that is connected to the general-purpose fan and blows air, and a blower pipe that is provided at the tip of the blower pipe and ejects the pressure wind as a driving flow A nozzle that has a predetermined gap with the nozzle and faces the opening, and sucks malodorous substances into the parallel pipe from the gap with a negative pressure generated by a driving flow blown from the nozzle into the parallel pipe. A malodorous and corrosive gas suction device comprising: suction means for mixing with the driving flow; and a diffuser provided at the rear of the parallel pipe for recovering the pressure of the mixed flow of the driving flow and the malodorous substance. .

The malodorous and corrosive gas suction device according to claim 3, wherein the parallel pipe and the diffuser are made of a synthetic resin material that is not corroded by a malodorous substance such as the malodorous and corrosive gas.