JP2006273489A - Dust flying preventing method - Google Patents

Dust flying preventing method Download PDF

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JP2006273489A
JP2006273489A JP2005093959A JP2005093959A JP2006273489A JP 2006273489 A JP2006273489 A JP 2006273489A JP 2005093959 A JP2005093959 A JP 2005093959A JP 2005093959 A JP2005093959 A JP 2005093959A JP 2006273489 A JP2006273489 A JP 2006273489A
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incombustible material
solid
dust
storage tank
dust scattering
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Tadao Hoshi
忠男 星
Sadaaki Asano
禎彰 浅野
Hiroyuki Kaya
宏幸 茅
Takashi Sugai
敬 菅井
Akihiro Fujiwara
章裕 藤原
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Fujisash Co Ltd
Regitex Co Ltd
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Fujisash Co Ltd
Regitex Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of effectively preventing flying of dust from solid noncombustible discharged from a garbage incinerator. <P>SOLUTION: In a storage tank for storing solid noncombustible discharged from a lower part of the garbage incinerator, the solid noncombustible is accumulated in the storage tank while dust flying inhibitor liquid including a polymeric substance is continuously or intermittently sprayed over the solid noncombustible input into and deposited inside of the storage tank. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ゴミ焼却炉から排出された焼却灰、燃え殻等の固体不燃物からの粉塵の飛散を防止する方法に関する。   The present invention relates to a method for preventing scattering of dust from solid incombustible materials such as incineration ash and burning husk discharged from a garbage incinerator.

ゴミ焼却炉においてゴミを焼却した後には、可燃物の燃焼により発生する排ガス、焼却飛灰、焼却灰、燃え殻（残渣）や、もともとゴミに混入している不燃物などが残るが、これらの中で、排ガスと焼却飛灰と呼ばれる微粉状の固体不燃物は、焼却炉上部から抜き出され、また、それ以外の焼却灰、燃え殻、混入不燃物のような比較的大きな固体不燃物は焼却炉の下部から抜き出され、各々適宜処理されて廃棄される。   After incineration of garbage in a garbage incinerator, exhaust gas, incineration fly ash, incineration ash, burning husks (residues) generated by the combustion of combustible materials and incombustible materials originally mixed in the garbage remain. In the case of flue gas and incinerated fly ash, the finely divided solid incombustible material is extracted from the upper part of the incinerator. Other incinerated ash, incineration husk, and other relatively large solid incombustible materials such as mixed incombustibles Are extracted from the lower part of the container, and each is appropriately processed and discarded.

固体不燃物のうち焼却飛灰はそのほとんどが、上述したように焼却炉上部から抜き出されるが、ごく一部が焼却炉下部にも残ってしまうため、焼却飛灰の全てを焼却炉上部から完全に抜き出すことはできない。その結果、焼却飛灰が上述した大きな固体不燃物と共に焼却炉の下部から抜き出されることになるが、焼却飛灰は、微粉状で、嵩比重が小さいため、発塵して飛散し易く、開放系での作業、例えば、焼却炉下部から抜き出された固体不燃物を不燃物バンカからトラックへ積載する作業などにおいて発塵して作業環境を悪化させてしまう。   Most of the incinerated fly ash out of the solid incombustible material is extracted from the upper part of the incinerator as described above, but only a small part remains in the lower part of the incinerator. It cannot be extracted completely. As a result, the incineration fly ash is extracted from the lower part of the incinerator together with the above-mentioned large solid incombustible material, but the incineration fly ash is fine powder and has a small bulk specific gravity, so it is easy to generate dust and scatter. In an open system work, for example, a work of loading a solid incombustible material extracted from the lower part of the incinerator from a noncombustible material bunker onto a truck, dust is generated and the working environment is deteriorated.

特に、流動床焼却炉においては砂を用いて流動床を形成するため、流動床焼却炉下部から固体不燃物と共に流動砂が抜き出される。この流動砂は廃棄せずに固体不燃物から分離して循環させるため、この流動砂の分離工程において、固体不燃物が微細化してしまってこれが発塵の要因となる場合もある。   In particular, in a fluidized bed incinerator, since fluidized bed is formed using sand, fluidized sand is extracted together with solid incombustible material from the lower part of the fluidized bed incinerator. Since this fluid sand is separated and circulated from the solid incombustible material without being discarded, the solid incombustible material may be refined in the fluid sand separation step, which may cause dust generation.

また、焼却炉から抜き出された固体不燃物は、有害な物質を含んでいるおそれがあるため、安全衛生上、発塵は可能な限り抑える必要がある。   Moreover, since the solid incombustible material extracted from the incinerator may contain harmful substances, it is necessary to suppress dust generation as much as possible for safety and health.

なお、この発明に関する先行技術文献情報としては以下のものがある。   The prior art document information relating to the present invention includes the following.

特開２０００−１５９３１６号公報JP 2000-159316 A

本発明は上記事情に鑑みなされたもので、ゴミ焼却炉から排出された固体不燃物からの粉塵の飛散を効果的に防止する方法を提供することを目的とする。   This invention is made | formed in view of the said situation, and it aims at providing the method of preventing the scattering of the dust from the solid incombustible material discharged | emitted from the refuse incinerator effectively.

本発明者らは、上記目的を達成するため鋭意検討を重ねた結果、ゴミ焼却炉下部から排出された固体不燃物を貯留する貯留槽において、貯留槽内に投入されて堆積する固体不燃物に連続的又は間歇的に高分子物質を含有する粉塵飛散防止剤液を散布しながら貯留槽に固体不燃物を蓄積させることにより、例えば不燃物バンカに蓄積された固体不燃物を不燃物バンカから落下させてトラックへ積載する作業や、不燃物ピットに蓄積された固体不燃物をクレーン等で掘り出してトラックへ積載する作業などにおいて、固体不燃物からの粉塵の飛散を抑制できることを見出し、本発明をなすに至った。   As a result of intensive studies to achieve the above-mentioned object, the present inventors, in a storage tank for storing solid incombustibles discharged from the lower part of the garbage incinerator, The solid incombustible material accumulated in the incombustible bunker is dropped from the incombustible material bunker, for example, by accumulating solid incombustible material in the storage tank while spraying the dust scattering agent liquid containing the polymer substance continuously or intermittently. The present invention has found that it is possible to suppress the scattering of dust from solid incombustible materials in operations such as loading on trucks, and excavating solid incombustible materials accumulated in incombustible pits with a crane or the like and loading them on trucks. It came to an eggplant.

従って、本発明は下記の粉塵飛散防止方法を提供する。
［請求項１］ゴミ焼却炉下部から排出された固体不燃物を貯留する貯留槽において、貯留槽内に投入されて堆積する固体不燃物に連続的又は間歇的に高分子物質を含有する粉塵飛散防止剤液を散布しながら貯留槽に固体不燃物を蓄積させることを特徴とする粉塵飛散防止方法。
［請求項２］上記ゴミ焼却炉が流動床焼却炉であり、上記貯留槽内に投入される固体不燃物が流動床焼却炉から排出された流動砂と固体不燃物との混合物から流動砂を分離したものであることを特徴とする請求項１記載の粉塵飛散防止方法。
［請求項３］上記貯留槽に蓄積させる固体不燃物１００質量部に対して、粉塵飛散防止剤液を高分子物質成分基準で０．３７５〜３質量部となるように散布することを特徴とする請求項１又は２記載の粉塵飛散防止方法。
［請求項４］上記高分子物質が天然ゴムラテックスであることを特徴とする請求項１乃至３のいずれか１項記載の粉塵飛散防止方法。
［請求項５］上記粉塵飛散防止剤液が、天然ゴムが水に乳化してなるエマルションであることを特徴とする請求項４記載の粉塵飛散防止方法。 Accordingly, the present invention provides the following dust scattering prevention method.
[Claim 1] In a storage tank for storing solid incombustibles discharged from the lower part of a waste incinerator, dust scattering that contains a polymer substance continuously or intermittently in the solid incombustibles thrown into the storage tank and deposited. A dust scattering prevention method characterized by accumulating solid incombustible material in a storage tank while spraying an inhibitor liquid.
[Claim 2] The garbage incinerator is a fluidized bed incinerator, and the solid incombustible material charged into the storage tank is obtained from a mixture of fluidized sand and solid incombustible material discharged from the fluidized bed incinerator. The dust scattering prevention method according to claim 1, wherein the dust scattering prevention method is separated.
[Claim 3] The dust scattering agent liquid is sprayed to 10075 parts by mass of the solid incombustible material to be accumulated in the storage tank so as to be 0.375 to 3 parts by mass on the basis of the polymer substance component. The dust scattering prevention method according to claim 1 or 2.
[4] The method for preventing dust scattering according to any one of [1] to [3], wherein the polymer substance is natural rubber latex.
[5] The method for preventing dust scattering according to [4], wherein the dust scattering preventing agent liquid is an emulsion obtained by emulsifying natural rubber in water.

本発明の粉塵飛散防止方法は、焼却飛灰に対する粉塵防止処理のような大規模な集塵工程を設けたり、焼却飛灰のような微粉に対する固定化処理のような煩雑な発塵防止処理を施したりすることなく、ゴミ焼却炉において、ゴミ焼却炉下部から排出された固体不燃物の搬出・運搬作業における固体不燃物からの粉塵の飛散を抑制することができ、特に、流動砂の分離工程において固体不燃物が微細化してしまう場合がある流動床焼却炉において効果的である。   The dust scattering prevention method of the present invention provides a large-scale dust collection process such as dust prevention treatment for incineration fly ash, or complicated dust prevention treatment such as immobilization treatment for fine powder such as incineration fly ash. In the garbage incinerator, it is possible to suppress the scattering of dust from the solid incombustible material in the work of carrying out and transporting the solid incombustible material discharged from the lower part of the garbage incinerator. It is effective in a fluidized bed incinerator where the solid incombustible material may be refined.

本発明によれば、ゴミ焼却炉下部から排出された固体不燃物の粉塵の飛散を効果的に防止することが可能であり、開放系で実施されるゴミ焼却炉における固体不燃物の搬出・運搬作業、例えば、不燃物バンカや不燃物ピット等からの固体不燃物の積み込みや運搬作業、又は最終処分場における埋め立て作業における作業環境を改善することが可能である。   ADVANTAGE OF THE INVENTION According to this invention, it is possible to prevent effectively the scattering of the dust of the solid incombustible material discharged | emitted from the garbage incinerator lower part, and carrying out and conveyance of the solid incombustible material in the garbage incinerator implemented by an open system It is possible to improve the work environment in work, for example, loading and transporting solid incombustible material from an incombustible material bunker or incombustible material pit, or landfill work in a final disposal site.

以下、本発明につき、更に詳しく説明する。
図１は、ゴミ焼却施設において、流動床式のゴミ焼却炉（流動床焼却炉）から排出された固体不燃物を抜き出して処理する工程の一例を示す部分概略図である。この場合、流動床焼却炉１に投下されたゴミは、流動床焼却炉１中で、エアノズル１１から導入された空気により流動砂と共に流動燃焼層１ａを形成して燃焼し、この燃焼によって発生した排ガス及び焼却飛灰１ｂは流動床焼却炉１の上部に設けられた排出口から排出し、集塵工程、除害工程などを経た後、廃棄処理される。 Hereinafter, the present invention will be described in more detail.
FIG. 1 is a partial schematic view showing an example of a process for extracting and processing solid incombustibles discharged from a fluidized bed incinerator (fluidized bed incinerator) in a garbage incineration facility. In this case, the dust dropped in the fluidized bed incinerator 1 burns in the fluidized bed incinerator 1 by forming the fluidized combustion layer 1a together with the fluidized sand by the air introduced from the air nozzle 11, and is generated by this combustion. The exhaust gas and the incineration fly ash 1b are discharged from an outlet provided in the upper part of the fluidized bed incinerator 1, and after being subjected to a dust collection process, a detoxification process, and the like, are disposed of.

一方、燃焼後に発生した焼却灰、燃え殻（残渣）、ゴミに混入していた不燃物及び流動砂は、徐々に下降して流動床焼却炉１内下部の非燃焼層１ｃに移動し、流動床焼却炉１の下方から不燃物排出機２により切り出されて排出され、砂分級機３に導入されて、砂分級機３によって砂とその他の固体不燃物に分けられ、流動砂は砂循環コンベア４１によって、砂貯留槽４２により砂の循環量を調節しながら流動床焼却炉１に戻される。   On the other hand, the incinerated ash, burning husk (residue) generated after combustion, incombustible material mixed with garbage, and fluidized sand gradually descend and move to the non-combustion layer 1c in the lower part of the fluidized bed incinerator 1, and fluidized bed. The incombustible material discharger 2 cuts and discharges from the lower side of the incinerator 1 and is introduced into the sand classifier 3. The sand classifier 3 separates the sand into other solid incombustible materials. Thus, the sand storage tank 42 returns to the fluidized bed incinerator 1 while adjusting the amount of sand circulation.

他方、砂と分離された固体不燃物は、不燃物搬送コンベア５によって磁選機６に搬送され、磁選機６により鉄分のみ取り除かれて、鉄分は鉄分バンカ７２に、鉄分以外の固体不燃物（焼却灰、燃え殻、非鉄金属など）は不燃物バンカ７１に各々投入される。そして、各々のバンカ７１，７２に固体不燃物や鉄分が一定量蓄積された時点で、不燃物バンカ７１及び鉄分バンカ７２の各々の下部に設けられた開閉扉７１ａ，７２ａを開いて、蓄積された内容物をトラックｔに落下させて搬出する。   On the other hand, the solid incombustible material separated from the sand is conveyed to the magnetic separator 6 by the incombustible material conveyor 5, and only the iron content is removed by the magnetic separator 6, and the iron content is transferred to the iron bunker 72 and the solid incombustible material other than iron (incineration) Ashes, husks, non-ferrous metals, etc.) are put into the incombustible bunker 71, respectively. When a certain amount of solid incombustible material or iron is accumulated in each bunker 71, 72, the open / close doors 71a, 72a provided at the lower portions of the incombustible material bunker 71 and the iron content bunker 72 are opened and accumulated. The stored contents are dropped onto the truck t and carried out.

本発明の粉塵飛散防止方法は、このような流動床焼却炉等のゴミ焼却炉下部から排出された固体不燃物を貯留するバンカ、ピット等の貯留槽において、貯留槽内に投入されて堆積する固体不燃物に連続的又は間歇的に高分子物質を含有する粉塵飛散防止剤液を散布しながら貯留槽に固体不燃物を蓄積させるものであり、特に、ゴミ焼却炉が流動床焼却炉であり、流動床焼却炉から排出された流動砂と固体不燃物との混合物から流動砂を分離して残った固体不燃物を貯留槽内に投入する際に好適に適用される。   The dust scattering prevention method of the present invention is deposited and deposited in a storage tank such as a bunker or pit that stores solid incombustibles discharged from the lower part of a garbage incinerator such as a fluidized bed incinerator. The solid incombustible material is accumulated in the storage tank while spraying the dust scattering agent liquid containing the polymer substance continuously or intermittently on the solid incombustible material. In particular, the garbage incinerator is a fluidized bed incinerator. It is preferably applied when the solid incombustible material remaining after separating the fluid sand from the mixture of the fluid sand discharged from the fluidized bed incinerator and the solid incombustible material is put into the storage tank.

本発明において、粉塵飛散防止剤液は高分子物質を含有するものであるが、高分子物質と水とを含有する水系液が好ましく、特に天然ゴムを含有するもの、とりわけ天然ゴムラテックス等の天然ゴムが水に乳化してなるエマルションが好ましい。また、ベントナイト、ポリアクリル酸ソーダ、ＣＭＣ、ＰＶＡ等を添加物として添加してもよい。天然ゴムは、粉塵の固定化作用に優れた高分子物質であると共に、生分解性のものであることから、廃棄物として埋め立てる際の環境適合性に優れており好適である。   In the present invention, the dust scattering prevention agent liquid contains a polymer substance, but an aqueous liquid containing a polymer substance and water is preferable, particularly a natural liquid such as a natural rubber latex or a natural rubber latex. An emulsion obtained by emulsifying rubber in water is preferred. Bentonite, sodium polyacrylate, CMC, PVA and the like may be added as additives. Natural rubber is a high-molecular substance excellent in dust fixing action and biodegradable, and is therefore excellent in environmental compatibility when landfilled as waste, and is therefore suitable.

特に、天然ゴムが水に乳化してなるエマルションは、ゴムにより固体不燃物中の微粉を特に効果的に接着固定化することができる点に加え、粉塵飛散防止剤成分である天然ゴム成分が比較的低濃度である粉塵飛散防止剤液を用いても十分な効果が得られるため、水の割合を多くして固体不燃物に対して広範囲に浸透分散させることができる点においても優れている。   In particular, emulsions made by emulsifying natural rubber in water can compare fine rubber particles in solid incombustible materials with rubber particularly effectively, and the natural rubber component that is a dust scattering inhibitor component is also compared. Since a sufficient effect can be obtained even if a dust scattering inhibitor solution having a low concentration is used, it is also excellent in that it can be permeated and dispersed in a wide range of solid incombustibles by increasing the proportion of water.

また、粉塵飛散防止剤液は、散布時の作業性や散布効率等の点から粉塵飛散防止剤液中の高分子物質の含有率が３０〜６０質量％、特に４０〜５５質量％のものを散布することが好ましく、貯留槽に蓄積させる固体不燃物１００質量部に対して、粉塵飛散防止剤液を高分子物質成分基準で０．３７５〜３質量部、特に０．５〜２．７５質量部となるように散布すればよい。   Moreover, the dust scattering inhibitor liquid has a polymer content in the dust scattering inhibitor liquid of 30 to 60% by mass, particularly 40 to 55% by mass from the viewpoint of workability at the time of spraying and spraying efficiency. It is preferable to spray, and for 100 parts by mass of the solid incombustible material to be accumulated in the storage tank, 0.375 to 3 parts by mass, particularly 0.5 to 2.75 parts by mass of the dust scattering preventing agent liquid on the basis of the polymer substance component. What is necessary is just to spread so that it may become a part.

なお、粉塵飛散防止剤液を散布することにより固体不燃物に与えられる水等の液分の量が多すぎると、バンカ等の下部が開閉する貯留槽においては液垂れのおそれがあるため、固体不燃物１００質量部に対して、水分基準で７質量部以下、特に５質量部以下となるように粉塵飛散防止剤液の濃度や散布量を調整することが好ましい。   In addition, if there is too much amount of liquid such as water given to the solid incombustible material by spraying the dust scattering prevention agent liquid, there is a risk of dripping in the storage tank where the lower part of the bunker etc. opens and closes. It is preferable to adjust the concentration and spraying amount of the dust scattering inhibitor liquid so as to be 7 parts by mass or less, particularly 5 parts by mass or less with respect to 100 parts by mass of incombustibles.

貯留槽内に投入されて堆積する固体不燃物に粉塵飛散防止剤液を散布する方法としては、例えば、以下のような方法が例示できる。図１に示される不燃物バンカ７１には、鉄分が分離された固体不燃物が流動床焼却炉１内の燃焼状況に応じて連続的又は間歇的に不燃物バンカ７１に投入されて徐々に堆積するが、不燃物バンカ７１内に例えばシャワーノズル８１を設け、投入された固体不燃物に対して、固体不燃物の堆積面全体に粉塵飛散防止剤液タンク８から粉塵飛散防止剤液を連続的又は間歇的に散布する方法が挙げられる。この場合、シャワーノズルの形状は適宜選定することができるが、特に、粉塵飛散防止剤液を液滴状で散布できるようにすることが好ましい。   Examples of the method of spraying the dust scattering preventing agent liquid on the solid incombustible material thrown into the storage tank and depositing it include the following methods. In the incombustible material bunker 71 shown in FIG. 1, solid incombustible material from which iron has been separated is introduced into the incombustible material bunker 71 continuously or intermittently according to the combustion state in the fluidized bed incinerator 1 and gradually accumulated. However, for example, a shower nozzle 81 is provided in the incombustible material bunker 71, and the dust scattering agent liquid is continuously applied from the dust scattering agent liquid tank 8 to the entire solid incombustible material deposition surface with respect to the charged solid incombustible material. Or the method of spraying intermittently is mentioned. In this case, the shape of the shower nozzle can be selected as appropriate. In particular, it is preferable that the dust scattering inhibitor liquid can be sprayed in the form of droplets.

また、粉塵飛散防止剤液を間歇的に散布する場合、貯留槽内に蓄積させる固体不燃物全量に対して散布する量の粉塵飛散防止剤液を複数回に分けて、固体不燃物が所定量堆積する毎に間歇的に散布することができるが、例えば、固体不燃物の堆積高さ１０ｃｍ当たり３回以上となるような回数で間歇的に散布すれば、粉塵飛散防止剤液を固体不燃物の深さ方向全体に効果的に浸透させることができることから好ましい。   Also, when spraying dust dispersion liquid intermittently, divide the amount of dust dispersion liquid to the amount of solid incombustible material to be accumulated in the storage tank multiple times, and the amount of solid incombustible material Although it can be sprayed intermittently every time it is deposited, for example, if it is sprayed intermittently at a frequency of 3 times or more per 10 cm of the deposition height of the solid incombustible material, the dust scattering prevention liquid is applied to the solid incombustible material. This is preferable because it can effectively penetrate the entire depth direction.

本発明の粉塵飛散防止方法により処理された固体不燃物は、トラック等によって搬出された後は、最終処分場においてトラックから荷下ろしされて埋め立てられるが、本発明の粉塵飛散防止方法により処理された固体不燃物は、トラック等への積み込みの際の発塵が抑制されるだけではなく、その後の輸送、荷下ろし、埋め立て等の各工程又は作業において衝撃などによって発生する発塵も抑制される。   The solid incombustible material treated by the dust scattering prevention method of the present invention is unloaded from the truck at the final disposal site after being carried out by a truck or the like, and is landfilled. However, the solid incombustible material was treated by the dust scattering prevention method of the present invention. The solid incombustible material not only suppresses dust generation during loading on a truck or the like, but also suppresses dust generation caused by impact or the like in each process or operation such as subsequent transportation, unloading, and landfilling.

なお、上記例においては、砂と鉄分を分離した固体不燃物の場合を例示したが、これに限定されるものではなく、本発明の粉塵飛散防止方法は鉄分を分離せずに固体不燃物を処理する場合に適用することも可能であり、更に、固体不燃物中に流動砂が含まれる場合であっても適用可能である。   In the above example, the case of a solid incombustible material in which sand and iron are separated is exemplified, but the present invention is not limited to this, and the dust scattering prevention method of the present invention does not separate the iron content and separates the solid incombustible material. The present invention can also be applied in the case of processing, and can be applied even when fluid sand is contained in the solid incombustible material.

以下、実施例及び比較例を示し、本発明を具体的に説明するが、本発明は下記の実施例に制限されるものではない。   EXAMPLES Hereinafter, although an Example and a comparative example are shown and this invention is demonstrated concretely, this invention is not restrict | limited to the following Example.

［実施例及び比較例］
流動床式ゴミ焼却炉の下部から抜き出して砂が分離された固体不燃物から磁選機によって鉄分を除去したものを容積約７．５ｍ3の不燃物バンカ内に投入する際、総量で約２５００ｋｇの固体不燃物を１２５回に分けて、約２０ｋｇずつ不燃物バンカ内に投入し、投入回毎に天然ゴム濃度が２０質量％の天然ゴムラテックス液０．４ｋｇを堆積した固体不燃物の堆積面（約３ｍ2）全体に均一にスプレーノズルを用いて散布した。 [Examples and Comparative Examples]
When a solid incombustible material extracted from the lower part of a fluidized-bed waste incinerator and iron removed by a magnetic separator is put into an incombustible material bunker with a volume of about 7.5 m 3 , the total amount is about 2500 kg. The solid incombustible material is divided into 125 times, and about 20 kg is introduced into the incombustible material bunker, and the solid incombustible material deposition surface (0.4 kg of natural rubber latex solution with a natural rubber concentration of 20% by mass is added each time) About 3 m 2 ) was sprayed uniformly using a spray nozzle.

次に、上記散布処理を施して蓄積させた固体不燃物を、不燃物バンカの下部の開閉扉を開いて不燃物バンカ下方に配置したトラックの荷台（バンカから荷台までの距離約２ｍ）に落下させて積載した。この際、トラックの前後左右の床面に、計４箇所（トラックからの距離約１．５ｍ）に、長さ４００ｍｍ、幅３００ｍｍのトレーを置き、固体不燃物を落下させたときに飛散した粉塵を回収した。   Next, the solid incombustible material accumulated by applying the above-mentioned spraying process falls to the truck bed (distance from the bunker to the platform is about 2m) that opens below the incombustible material bunker and opens below the incombustible material bunker. Let me load it. At this time, 400 mm long and 300 mm wide trays were placed on four floors (front and rear, left and right floors of the truck) at a total of four locations (distance from the truck), and the dust scattered when the solid incombustible material was dropped. Was recovered.

一方、比較として、天然ゴムラテックス液を散布せずに固体不燃物を蓄積させたものについて、上記と同様の方法で飛散した粉塵を回収した。   On the other hand, as a comparison, dust scattered by a method similar to the above was collected for the solid incombustible material accumulated without spraying the natural rubber latex liquid.

各粉塵回収点における粉塵の回収量を表１に示す。また、回収された粉塵の総量から比較例に対する実施例の飛散抑制率を下記式に基づき算出したところ、５８．７％であった。
飛散防止率［％］＝（Ｗ0−Ｗ1）／Ｗ0×１００
Ｗ0：比較例（粉塵飛散防止剤液を散布しなかったもの）の粉塵回収量の総量［ｇ］
Ｗ1：実施例（粉塵飛散防止剤液を散布したもの）の粉塵回収量の総量［ｇ］ Table 1 shows the amount of dust collected at each dust collection point. Moreover, it was 58.7% when the scattering suppression rate of the Example with respect to the comparative example was computed based on the following formula from the total amount of the collected dust.
Scattering prevention rate [%] = (W 0 −W 1 ) / W 0 × 100
W 0 : Total amount of collected dust [g] in the comparative example (without spraying the dust scattering inhibitor liquid)
W 1 : Total amount of dust recovered [g] in the example (sprayed with the dust scattering inhibitor liquid)

Figure 2006273489
Figure 2006273489

この結果からいずれの粉塵回収点においても天然ゴムラテックス液を散布した実施例の方が天然ゴムラテックス液を散布しなかった比較例より粉塵の飛散量が激減し、本発明の粉塵飛散防止方法により粉塵の飛散が効果的に抑制できることが確認できた。   From this result, the amount of dust scattered in the example in which the natural rubber latex liquid was sprayed at any dust collection point was drastically reduced compared to the comparative example in which the natural rubber latex liquid was not sprayed, and the dust scattering prevention method of the present invention was used. It was confirmed that dust scattering can be effectively suppressed.

ゴミ焼却施設において、流動床焼却炉から排出された固体不燃物を抜き出して処理する工程の一例を示す部分概略図である。It is a partial schematic diagram which shows an example of the process of extracting and processing the solid incombustible material discharged | emitted from the fluidized-bed incinerator in a garbage incinerator.

符号の説明Explanation of symbols

１ 流動床焼却炉
１１ エアノズル
１ａ 流動燃焼層
１ｂ 排ガス及び焼却飛灰
１ｃ 非燃焼層
２ 不燃物排出機
３ 砂分級機
４１ 砂循環コンベア
４２ 砂貯留槽
５ 不燃物搬送コンベア
６ 磁選機
７１ 不燃物バンカ
７２ 鉄分バンカ
７１ａ，７２ａ 開閉扉
８ 粉塵飛散防止剤液タンク
８１ シャワーノズル
ｔ トラック DESCRIPTION OF SYMBOLS 1 Fluidized bed incinerator 11 Air nozzle 1a Fluidized combustion layer 1b Exhaust gas and incineration fly ash 1c Noncombustion layer 2 Incombustible material discharge machine 3 Sand classifier 41 Sand circulation conveyor 42 Sand storage tank 5 Incombustible material conveyance conveyor 6 Magnetic separator 71 Incombustible material bunker 72 Iron bunker 71a, 72a Open / close door 8 Dust scattering prevention liquid tank 81 Shower nozzle t Track

Claims (5)

ゴミ焼却炉下部から排出された固体不燃物を貯留する貯留槽において、貯留槽内に投入されて堆積する固体不燃物に連続的又は間歇的に高分子物質を含有する粉塵飛散防止剤液を散布しながら貯留槽に固体不燃物を蓄積させることを特徴とする粉塵飛散防止方法。   In a storage tank that stores solid incombustibles discharged from the lower part of the garbage incinerator, a dust scattering inhibitor solution containing a polymer substance is sprayed continuously or intermittently on the solid incombustibles that are put into the storage tank and deposited. A dust scattering prevention method characterized by accumulating solid incombustible material in a storage tank. 上記ゴミ焼却炉が流動床焼却炉であり、上記貯留槽内に投入される固体不燃物が流動床焼却炉から排出された流動砂と固体不燃物との混合物から流動砂を分離したものであることを特徴とする請求項１記載の粉塵飛散防止方法。   The garbage incinerator is a fluidized bed incinerator, and the solid incombustible material charged into the storage tank is obtained by separating the fluidized sand from the mixture of fluidized sand and solid incombustible material discharged from the fluidized bed incinerator. The method for preventing dust scattering according to claim 1. 上記貯留槽に蓄積させる固体不燃物１００質量部に対して、粉塵飛散防止剤液を高分子物質成分基準で０．３７５〜３質量部となるように散布することを特徴とする請求項１又は２記載の粉塵飛散防止方法。   The dust dispersion preventing agent liquid is sprayed so as to be 0.375 to 3 parts by mass on the basis of a polymer substance component with respect to 100 parts by mass of the solid incombustible material accumulated in the storage tank. 2. The dust scattering prevention method according to 2. 上記高分子物質が天然ゴムラテックスであることを特徴とする請求項１乃至３のいずれか１項記載の粉塵飛散防止方法。   The dust scattering prevention method according to any one of claims 1 to 3, wherein the polymer substance is natural rubber latex. 上記粉塵飛散防止剤液が、天然ゴムが水に乳化してなるエマルションであることを特徴とする請求項４記載の粉塵飛散防止方法。   5. The dust scattering prevention method according to claim 4, wherein the dust scattering inhibitor liquid is an emulsion obtained by emulsifying natural rubber in water.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008308532A (en) * 2007-06-13 2008-12-25 Fujisash Co Dust scattering preventive, and dust scattering prevention method
CN113289769A (en) * 2021-05-14 2021-08-24 云南木利锑业有限公司 Pulp separation barrel
KR20210148491A (en) * 2020-05-28 2021-12-08 (주)비엠에스 Granular fluid media having a function of reducing fine dust in a fluidized bed combustion furnace, a method of manufacturing the same, and a method of operating the fluidized bed combustion furnace using the same
JP7360287B2 (en) 2019-09-18 2023-10-12 三機工業株式会社 Garbage crane operating system and garbage processing facility applying this system

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Publication number Priority date Publication date Assignee Title
JPS6249114A (en) * 1985-08-28 1987-03-03 Ebara Corp Incinerated ash solidifying method
JPH05306812A (en) * 1991-02-20 1993-11-19 Mitsubishi Heavy Ind Ltd Device for coveying ash in incinerator
JP2003001219A (en) * 2001-06-22 2003-01-07 Kurita Water Ind Ltd Scattering preventive agent for deposit in incineration plant
JP2004008897A (en) * 2002-06-05 2004-01-15 Kurita Water Ind Ltd Method of preventing scattering of granular particles and scattering preventing agent

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6249114A (en) * 1985-08-28 1987-03-03 Ebara Corp Incinerated ash solidifying method
JPH05306812A (en) * 1991-02-20 1993-11-19 Mitsubishi Heavy Ind Ltd Device for coveying ash in incinerator
JP2003001219A (en) * 2001-06-22 2003-01-07 Kurita Water Ind Ltd Scattering preventive agent for deposit in incineration plant
JP2004008897A (en) * 2002-06-05 2004-01-15 Kurita Water Ind Ltd Method of preventing scattering of granular particles and scattering preventing agent

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008308532A (en) * 2007-06-13 2008-12-25 Fujisash Co Dust scattering preventive, and dust scattering prevention method
JP7360287B2 (en) 2019-09-18 2023-10-12 三機工業株式会社 Garbage crane operating system and garbage processing facility applying this system
KR20210148491A (en) * 2020-05-28 2021-12-08 (주)비엠에스 Granular fluid media having a function of reducing fine dust in a fluidized bed combustion furnace, a method of manufacturing the same, and a method of operating the fluidized bed combustion furnace using the same
KR102424124B1 (en) 2020-05-28 2022-07-25 (주)비엠에스 Granular fluid media having a function of reducing fine dust in a fluidized bed combustion furnace, a method of manufacturing the same, and a method of operating the fluidized bed combustion furnace using the same
CN113289769A (en) * 2021-05-14 2021-08-24 云南木利锑业有限公司 Pulp separation barrel

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