JP2016185510A - Exhaust gas treatment equipment - Google Patents

Exhaust gas treatment equipment Download PDF

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JP2016185510A
JP2016185510A JP2015066525A JP2015066525A JP2016185510A JP 2016185510 A JP2016185510 A JP 2016185510A JP 2015066525 A JP2015066525 A JP 2015066525A JP 2015066525 A JP2015066525 A JP 2015066525A JP 2016185510 A JP2016185510 A JP 2016185510A
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activated carbon
carbon layer
exhaust gas
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平山　敦
Atsushi Hirayama
敦 平山
厚志 長尾
Atsushi Nagao
厚志 長尾
三浦　崇
Takashi Miura
崇 三浦
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JFE Engineering Corp
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Abstract

【課題】排ガス中の水銀を効果的に吸着除去できる排ガス処理装置を提供することを課題とする。
【解決手段】活性炭層２０を内蔵する吸着塔１０を有する排ガス処理装置において、活性炭層２０は、添着物のない通常活性炭層２１と添着物が添着された添着活性炭層２２とを有している。
【選択図】図１An object of the present invention is to provide an exhaust gas treatment apparatus capable of effectively adsorbing and removing mercury in exhaust gas.
In an exhaust gas treatment apparatus having an adsorption tower with a built-in activated carbon layer, the activated carbon layer has a normal activated carbon layer having no additive and an attached activated carbon layer having an additive attached thereto. .
[Selection] Figure 1

Description

本発明は、廃棄物焼却施設、セメント製造工場、火力発電所、非鉄金属製錬工場等の各種工場から排出される水銀を含む排ガスの処理装置に関する。   The present invention relates to an apparatus for treating exhaust gas containing mercury discharged from various factories such as a waste incineration facility, a cement manufacturing plant, a thermal power plant, and a non-ferrous metal smelting plant.

セメントキルン炉、非鉄金属製錬炉から排出される排ガスや、水銀を含んだ廃棄物が廃棄物焼却炉で焼却され排出される排ガス中に水銀が含まれることがあり、そのまま大気に放出されると、大気汚染を引き起こし問題となる。そこで、排ガス中の水銀を除去することが求められている。   Mercury may be contained in exhaust gas discharged from cement kiln furnaces and non-ferrous metal smelting furnaces, and wastes containing mercury incinerated in waste incinerators, and are released directly into the atmosphere. It causes air pollution and becomes a problem. Therefore, it is required to remove mercury in the exhaust gas.

さらに、「水銀に関する水俣条約」が２０１３年に採択され、世界的な水銀管理強化の動きが進行している。この条約発効後、水銀排出規制対象施設に対して水銀の排出を抑制する対策が検討されている。水銀排出規制対象施設としては、石炭火力発電所、石炭焚きボイラ、非鉄金属製錬施設、廃棄物焼却施設、セメント製造施設が挙げられる。かかる状況において、これらの施設から排出される排ガス中の水銀を効率的に除去する処理装置の要望が高まっている。   Furthermore, the Minamata Convention on Mercury was adopted in 2013, and global movements to strengthen mercury management are in progress. After the convention enters into force, measures to reduce mercury emissions are being considered for facilities subject to mercury emission control. Facilities subject to mercury emission regulations include coal-fired power plants, coal-fired boilers, non-ferrous metal smelting facilities, waste incineration facilities, and cement manufacturing facilities. Under such circumstances, there is an increasing demand for a processing apparatus that efficiently removes mercury in the exhaust gas discharged from these facilities.

例えば、廃棄物焼却炉から排出される排ガス中の水銀の除去方法としては、特許文献１に見られるように、何も特段の物質を添着していない通常の活性炭（以下、「通常活性炭」という）を充填した固定床式吸着塔に排ガスを導入し、該通常活性炭に水銀を吸着させる方法が知られている。   For example, as a method for removing mercury in exhaust gas discharged from a waste incinerator, as shown in Patent Document 1, normal activated carbon (hereinafter referred to as “normal activated carbon”) to which no special substance is attached. There is known a method in which exhaust gas is introduced into a fixed bed type adsorption tower packed with) and mercury is adsorbed on the normal activated carbon.

一方、特許文献２には、活性炭にアルカリ金属ヨウ化物、鉄、ニッケル、銅、亜鉛などの金属の硫酸塩又は硝酸塩を担持せしめてなる水銀蒸気吸着剤が開示されている。水銀吸着用活性炭として、上記のアルカリ金属ヨウ化物、鉄、ニッケル、銅、亜鉛などの金属の硫酸塩又は硝酸塩を添着した活性炭や、塩素、臭素、フッ素などのハロゲン化合物、鉄、ニッケル、銅、亜鉛などの金属やこれら金属の化合物、硫黄を添着した活性炭を用いることが提案されている。このような、ハロゲン化合物、金属化合物、硫黄等が添着された活性炭を「添着活性炭」といい、水銀吸着性能に優れている。   On the other hand, Patent Document 2 discloses a mercury vapor adsorbent in which activated carbon is loaded with a sulfate or nitrate of a metal such as alkali metal iodide, iron, nickel, copper, or zinc. As activated carbon for mercury adsorption, activated carbon impregnated with alkali metal iodide, iron, nickel, copper, zinc and other metal sulfates or nitrates, halogen compounds such as chlorine, bromine, fluorine, iron, nickel, copper, It has been proposed to use metals such as zinc, compounds of these metals, and activated carbon impregnated with sulfur. Such activated carbon impregnated with halogen compounds, metal compounds, sulfur, etc. is referred to as “impregnated activated carbon” and has excellent mercury adsorption performance.

特開２０１４−１６６６１８JP 2014-166618 A 特開昭５９−０１０３４３JP 59-010343

特許文献１のような方法で排ガスを処理すると、排ガス中の水銀に加え、ダイオキシン類やクロロベンゼン類、クロロフェノール類、多環芳香族炭化水素類なども同時に除去が可能である。処理に際して、固定床式の吸着塔を用いる場合、活性炭の寿命に応じて活性炭の交換が必要であるが、水銀やダイオキシン類を含む排ガスの吸着処理に活性炭を用いると、ダイオキシン類より水銀の方が破過し易いという報告もあり（廃棄物学会誌Ｖｏｌ．１６，Ｎｏ．４，ｐ３６）、活性炭の水銀吸着能力が早い時期に低下してしまい、活性炭の交換頻度が上がりコストが掛かるという課題を有する。   When exhaust gas is treated by a method such as Patent Document 1, in addition to mercury in exhaust gas, dioxins, chlorobenzenes, chlorophenols, polycyclic aromatic hydrocarbons, and the like can be simultaneously removed. When using a fixed-bed type adsorption tower for treatment, it is necessary to replace the activated carbon according to the life of the activated carbon. There is also a report that it is easy to break through (Journal of the Waste Society Vol.16, No.4, p36), and the mercury adsorption capacity of activated carbon declines early and the replacement frequency of activated carbon increases and costs increase. Have

一方、通常活性炭に代え、特許文献２に見られるような、水銀吸着性能に優れた添着活性炭を固定床式の吸着塔に使用すると、水銀に対する吸着性能が高いため活性炭寿命を長くできるが、廃棄物焼却炉やセメント製造施設等の排ガスに用いると、添着活性炭がダイオキシン類や多環芳香族炭化水素類なども同時に吸着除去するため、これら共存物質の影響により添着活性炭の水銀吸着除去可能な寿命が短くなるという課題を有する。併せて、添着活性炭は通常活性炭に比べ高価であり、コスト高に繋がる。   On the other hand, instead of the normal activated carbon, if the impregnated activated carbon with excellent mercury adsorption performance as used in Patent Document 2 is used in a fixed bed type adsorption tower, the activated carbon life can be extended due to its high adsorption performance against mercury. When used in exhaust gas from a waste incinerator or cement manufacturing facility, the impregnated activated carbon adsorbs and removes dioxins and polycyclic aromatic hydrocarbons at the same time. Has the problem of shortening. In addition, impregnated activated carbon is more expensive than ordinary activated carbon, leading to high costs.

本発明は、このような状況に鑑み、排ガス中の水銀の吸着除去を良好に行い、添着活性炭の使用量を最小限として排ガス処理費用を抑制できる排ガス処理装置を提供することを課題とする。   In view of such circumstances, it is an object of the present invention to provide an exhaust gas treatment apparatus that can satisfactorily remove and absorb mercury in exhaust gas and minimize the amount of impregnated activated carbon to suppress the exhaust gas treatment cost.

本発明に係る排ガス処理装置は、活性炭層を内蔵する吸着塔を有する排ガス処理装置において、活性炭層は、添着物のない通常活性炭層と添着物が添着された添着活性炭層とを有することを特徴としている。   The exhaust gas treatment apparatus according to the present invention is an exhaust gas treatment apparatus having an adsorption tower incorporating an activated carbon layer, wherein the activated carbon layer has a normal activated carbon layer without an additive and an attached activated carbon layer to which an additive is attached. It is said.

このような構成の本発明によると、ダイオキシン類や多環芳香族炭化水素類の吸着性能に優れた通常活性炭によりダイオキシン類等を吸着除去し、水銀吸着性能に優れた添着活性炭により水銀を吸着除去することができ、高価な添着活性炭を水銀吸着除去に優先的に用いることができ、添着活性炭の使用量を抑制して、排ガス処理費用を低減することができる。   According to the present invention having such a configuration, dioxins and the like are adsorbed and removed by ordinary activated carbon having excellent adsorption performance for dioxins and polycyclic aromatic hydrocarbons, and mercury is adsorbed and removed by impregnated activated carbon having excellent mercury adsorption performance. Therefore, expensive impregnated activated carbon can be preferentially used for mercury adsorption and removal, and the amount of the impregnated activated carbon used can be suppressed to reduce exhaust gas treatment costs.

また、本発明に係る排ガス処理装置は、活性炭層を内蔵する吸着塔を有する排ガス処理装置において、活性炭層は、添着物のない通常活性炭層と添着物が添着された添着活性炭層とを有し、通常活性炭層が添着活性炭層に対して上流側に配置されていることを特徴としている。   Further, the exhaust gas treatment apparatus according to the present invention is an exhaust gas treatment apparatus having an adsorption tower incorporating an activated carbon layer. The activated carbon layer has a normal activated carbon layer without an additive and an attached activated carbon layer to which an additive is attached. In general, the activated carbon layer is arranged on the upstream side of the impregnated activated carbon layer.

このような構成の本発明によると、固定床式の吸着塔において、排ガスの流通方向で上流側に配置された通常活性炭層で、先ず、ダイオキシン類やクロロベンゼン類、クロロフェノール類、多環芳香族炭化水素類及び水銀を吸着除去する。しかる後、下流側に配置された添着活性炭層により、通常活性炭層で吸着除去しきれなかった水銀を除去する。その際、上流側の通常活性炭層で水銀吸着を阻害するダイオキシン類等がすでに除去されているので、高価な添着活性炭層を専ら水銀除去に用いることができる。その結果、水銀に対する添着活性炭の長寿命化が図れ、高価な添着活性炭の使用量を抑制でき排ガス処理費用の低減が可能となる。   According to the present invention having such a configuration, in a fixed bed type adsorption tower, a normal activated carbon layer disposed upstream in the flow direction of exhaust gas, first, dioxins, chlorobenzenes, chlorophenols, polycyclic aromatics Adsorb and remove hydrocarbons and mercury. Thereafter, mercury that could not be adsorbed and removed by the activated carbon layer is usually removed by the impregnated activated carbon layer disposed on the downstream side. At that time, since dioxins and the like that inhibit mercury adsorption have already been removed in the normal activated carbon layer on the upstream side, an expensive impregnated activated carbon layer can be used exclusively for mercury removal. As a result, the life of the impregnated activated carbon with respect to mercury can be extended, the amount of expensive impregnated activated carbon used can be suppressed, and the exhaust gas treatment cost can be reduced.

このような構成の本発明は、先ず、通常活性炭層で排ガス中のダイオキシン類や多環芳香族炭化水素類等を吸着除去し、下流側に配置された添着活性炭層での水銀吸着除去を阻害するダイオキシン類等を除去するため、特に排ガス中のダイオキシン類や多環芳香族炭化水素類の濃度が高い場合に有効である。   In the present invention having such a configuration, first, the activated carbon layer normally adsorbs and removes dioxins and polycyclic aromatic hydrocarbons in the exhaust gas, and inhibits the adsorption and removal of mercury in the impregnated activated carbon layer arranged on the downstream side. In order to remove dioxins and the like, it is effective particularly when the concentration of dioxins and polycyclic aromatic hydrocarbons in the exhaust gas is high.

また、本発明に係る排ガス処理装置は、活性炭層を内蔵する吸着塔を有する排ガス処理装置において、活性炭層は、添着物のない通常活性炭層と添着物が添着された添着活性炭層とを有し、添着活性炭層が通常活性炭層に対して上流側に配置されていることを特徴としている。   Further, the exhaust gas treatment apparatus according to the present invention is an exhaust gas treatment apparatus having an adsorption tower incorporating an activated carbon layer. The activated carbon layer has a normal activated carbon layer without an additive and an attached activated carbon layer to which an additive is attached. The impregnated activated carbon layer is usually arranged upstream of the activated carbon layer.

このような構成の本発明は、特に排ガス中のダイオキシン類や多環芳香族炭化水素類濃度が低く水銀濃度が高い場合に、有効である。すなわち、排ガス中にダイオキシン類や多環芳香族炭化水素類が少ないため、添着活性炭層での水銀吸着除去にこれらの共存物質の影響を受けにくく、吸着塔の上流側に設置された添着活性炭層において水銀を効率的に吸着除去できる。吸着塔への排ガスの流通を続けた後、上流側に設置された添着活性炭層の水銀吸着能が破過に到り、添着活性炭層出口から排出される排ガス中の水銀濃度が一定濃度まで上昇する状態に到っても、下流側に設置された通常活性炭層において水銀を除去できるため、添着活性炭層を引続き使用可能である。添着活性炭層のみを備える吸着塔では添着活性炭層の水銀吸着能が破過に到れば添着活性炭層を全量交換する必要があることに対して、本発明では添着活性炭層の水銀吸着量が飽和付近に達するまで使用することができ、高価な添着炭を有効に使うことができ効率的である。吸着塔への排ガスの流通を続けると、上流側の添着活性炭層出口の排ガス中の水銀濃度が上昇してくるが、これに伴い、下流側の通常活性炭層の水銀吸着能が先に破過した場合は、通常活性炭のみを交換するようにする。通常活性炭は添着活性炭に比べて安価であるため、活性炭の総合的なコストを低減することができる。   The present invention having such a configuration is particularly effective when the concentration of dioxins and polycyclic aromatic hydrocarbons in the exhaust gas is low and the mercury concentration is high. That is, since there are few dioxins and polycyclic aromatic hydrocarbons in the exhaust gas, the adsorbed activated carbon layer installed upstream of the adsorption tower is less susceptible to the effects of these coexisting substances in the adsorption and removal of mercury in the adsorbed activated carbon layer. Can efficiently absorb and remove mercury. After continuing the flow of exhaust gas to the adsorption tower, the mercury adsorption capacity of the impregnated activated carbon layer installed upstream reaches breakthrough, and the mercury concentration in the exhaust gas discharged from the adsorbed activated carbon layer outlet rises to a certain level Even in such a state, since the mercury can be removed in the normal activated carbon layer installed on the downstream side, the impregnated activated carbon layer can be used continuously. In an adsorption tower having only an impregnated activated carbon layer, if the mercury adsorption capacity of the adsorbed activated carbon layer reaches breakthrough, the entire amount of the adsorbed activated carbon layer needs to be replaced. It can be used until it reaches the vicinity, and expensive impregnated coal can be used effectively and is efficient. As the exhaust gas flow to the adsorption tower continues, the mercury concentration in the exhaust gas at the upstream side of the adsorbed activated carbon layer rises. With this, the mercury adsorption capacity of the downstream normal activated carbon layer breaks down first. If this happens, replace only the activated carbon. Since activated carbon is usually cheaper than impregnated activated carbon, the overall cost of activated carbon can be reduced.

本発明において、通常活性炭層と添着活性炭層は、互いに密着して配設されているようにすることも、互いに分離して配設されていて、両者間に中間空間を形成しているようにすることもできる。   In the present invention, the activated carbon layer and the impregnated activated carbon layer may be arranged in close contact with each other, or may be arranged separately from each other so as to form an intermediate space therebetween. You can also

また、本発明に係る排ガス処理装置は活性炭層を内蔵する吸着塔を有し、吸着塔は、上流側塔と下流側塔とを連通して形成され、上流側塔に添着物のない通常活性炭層が配設され、下流側塔に添着物が添着された添着活性炭層が配設されていることを特徴としている。   In addition, the exhaust gas treatment apparatus according to the present invention has an adsorption tower having a built-in activated carbon layer, and the adsorption tower is formed by communicating the upstream tower and the downstream tower, and the activated carbon having no adduct in the upstream tower. A layer is disposed, and an impregnated activated carbon layer in which an accretion is impregnated is disposed in the downstream tower.

また、本発明に係る排ガス処理装置は活性炭層を内蔵する吸着塔を有し、吸着塔は、上流側塔と下流側塔とを連通して形成され、上流側塔に添着物が添着された添着活性炭層が配設され、下流側塔に添着物のない通常活性炭層が配設されていることを特徴としている。   Further, the exhaust gas treatment apparatus according to the present invention has an adsorption tower having a built-in activated carbon layer, and the adsorption tower is formed by connecting an upstream tower and a downstream tower, and an adjunct is attached to the upstream tower. An impregnated activated carbon layer is provided, and a normal activated carbon layer without an adduct is provided in the downstream column.

本発明において、通常活性炭層と添着活性炭層の少なくとも一方は、塔内に対し装入及び取出し可能なカートリッジを形成しているようにすることができる。こうすることで、塔内に対する活性炭層の装入及び取出しがきわめて簡単となる。   In the present invention, at least one of the normal activated carbon layer and the impregnated activated carbon layer can be configured to form a cartridge that can be loaded and unloaded from the tower. By doing so, it becomes very easy to insert and remove the activated carbon layer into the tower.

本発明において、上記カートリッジは、通常活性炭層と添着活性炭層のいずれかが単独で単層をなす状態で、複数の単層が間隔をもって平行に配置され、隣接する単層同士が塔内空間を上流側空間と下流側空間とに区分するように接続されていることで形成できる。   In the present invention, the cartridge is usually in a state where one of the activated carbon layer and the attached activated carbon layer alone forms a single layer, a plurality of single layers are arranged in parallel at intervals, and adjacent single layers form a space in the tower. It can be formed by being connected so as to be divided into an upstream space and a downstream space.

このように、カートリッジに複数の単層を設けることで、排ガスが活性炭層を透過する面積を増大させることができる。   Thus, by providing a plurality of single layers in the cartridge, the area through which the exhaust gas permeates the activated carbon layer can be increased.

また、本発明に係る排ガス処理装置は活性炭層を内蔵する吸着塔を有し、活性炭層は、塔内に対し装入及び取出し可能なカートリッジを形成し、カートリッジは、添着物のない通常活性炭層と添着物が添着された添着活性炭層の二層が密着されて一つの組層をなす状態で、複数の組層が間隔をもって複数平行に配置され、隣接する組層同士が塔内空間を上流側空間と下流側空間とに区分するように接続されていることを特徴としている。   Further, the exhaust gas treatment apparatus according to the present invention has an adsorption tower containing an activated carbon layer, and the activated carbon layer forms a cartridge that can be charged into and taken out of the inside of the tower. The two layers of the activated carbon layer attached with the adhering material are in close contact with each other to form one set layer, and a plurality of set layers are arranged in parallel at intervals, and the adjacent set layers are upstream of the space in the tower. It is characterized by being connected so as to be divided into a side space and a downstream space.

このように、カートリッジに複数の組層を設けることで、排ガスが活性炭層を透過する面積を増大させることができる。   As described above, by providing a plurality of assembled layers in the cartridge, the area through which the exhaust gas permeates the activated carbon layer can be increased.

本発明によると、吸着塔内の上流側に通常活性炭層、下流側に添着活性炭層を配置することとしたので、上流側の通常活性炭層で、ダイオキシン類やクロロベンゼン類、クロロフェノール類、多環芳香族類炭化水素類及び一部の水銀を吸着除去した後に、通常活性炭層で吸着除去しきれなかった残留の水銀を添着活性炭層で除去でき、その際、上流側の通常活性炭層で添着活性炭の水銀吸着を阻害するダイオキシン類がすでに除去されていて、下流側の高価な添着活性炭層を専ら水銀除去に用いることができる。その結果、水銀に対する添着活性炭の長寿命化が図れ、高価な添着活性炭の使用量を抑制できランニングコストの低減が可能となるという効果を得る。   According to the present invention, since the normal activated carbon layer is disposed upstream of the adsorption tower and the attached activated carbon layer is disposed downstream, the dioxins, chlorobenzenes, chlorophenols, polycyclic After adsorbing and removing aromatic hydrocarbons and some mercury, the remaining activated carbon that could not be absorbed and removed by the activated carbon layer can be removed by the impregnated activated carbon layer. Dioxins that inhibit mercury adsorption have already been removed, and an expensive impregnated activated carbon layer on the downstream side can be used exclusively for mercury removal. As a result, the life of the impregnated activated carbon with respect to mercury can be extended, and the amount of expensive impregnated activated carbon used can be suppressed, and the running cost can be reduced.

また、本発明によると、吸着塔内の上流側に添着活性炭層、下流側に通常活性炭層を配置することとしたので、特に排ガス中のダイオキシン類や多環芳香族炭化水素類濃度が低く水銀濃度が高い場合に、上流側の添着活性炭層での水銀吸着除去に対してダイオキシン類や多環芳香族炭化水素類の影響を受けにくいため、水銀を効率的に吸着除去できる。   In addition, according to the present invention, since the impregnated activated carbon layer is disposed upstream of the adsorption tower and the normal activated carbon layer is disposed downstream, the concentration of dioxins and polycyclic aromatic hydrocarbons in the exhaust gas is particularly low and mercury. When the concentration is high, mercury can be efficiently adsorbed and removed because it is less affected by dioxins and polycyclic aromatic hydrocarbons with respect to mercury adsorption and removal in the upstream activated carbon layer.

本発明の一実施形態としての排ガス処理装置の概要構成を示す縦断面図であり、（Ａ）は通常活性炭層と添着活性炭層が密着して一つの組層をなして同一吸着塔に収められている場合、（Ｂ）は通常活性炭層と添着活性炭層がそれぞれで単層をなして別の吸着塔に収められている場合を示している。BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view which shows the schematic structure of the waste gas processing apparatus as one Embodiment of this invention, (A) is normally accommodated in the same adsorption tower in one activated carbon layer and an attached activated carbon layer closely_contact | adhering. (B) shows a case where the activated carbon layer and the impregnated activated carbon layer are each formed as a single layer and stored in separate adsorption towers. 本発明の他の実施形態であって、通常活性炭層と添着活性炭層のいずれかが複数層平行に設けられてカートリッジをなし、両カートリッジが別々の吸着塔に収められている場合で、（Ａ）はカートリッジの吸着塔との配置関係、（Ｂ）はカートリッジの構造を示している。In another embodiment of the present invention, a normal activated carbon layer or an impregnated activated carbon layer is provided in parallel with a plurality of layers to form a cartridge, and both cartridges are housed in separate adsorption towers. ) Shows the arrangement relationship between the cartridge and the adsorption tower, and (B) shows the structure of the cartridge. 本発明のさらに他の実施形態であって、通常活性炭層と添着活性炭層が密着して組層をなし、複数の組層がカートリッジとして形成された場合を示し、（Ａ）はカートリッジの吸着塔との配置関係、（Ｂ）はカートリッジの構造、（Ｃ）は（Ｂ）の一部を拡大して示している。FIG. 6 shows still another embodiment of the present invention, in which a normal activated carbon layer and an impregnated activated carbon layer are in close contact to form an assembled layer, and a plurality of assembled layers are formed as a cartridge. FIG. (B) is the structure of the cartridge, and (C) is an enlarged view of a part of (B).

以下、添付図面にもとづき、本発明の実施の形態を説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図１（Ａ），（Ｂ）は、本発明の一実施形態における排ガス処理装置としての固定式吸着塔の概要構成を示す縦断面図である。   1A and 1B are longitudinal sectional views showing a schematic configuration of a fixed adsorption tower as an exhaust gas treatment apparatus in one embodiment of the present invention.

図１（Ａ）に示す排ガス処理装置では、上端に排ガス導入部１１そして下端に清浄排ガス導出部１２が設けられた縦型筒状の吸着塔１０を有し該吸着塔１０はその内部に単層状の活性炭層２０が取外し自在に設置されていて、該活性炭層２０が塔内の空間を排ガス導入部１１側の上流側空間Ｕと清浄排ガス導出部１２側の下流側空間Ｌとに区分している。   The exhaust gas treatment apparatus shown in FIG. 1 (A) has a vertical cylindrical adsorption tower 10 provided with an exhaust gas introduction part 11 at the upper end and a clean exhaust gas outlet part 12 at the lower end. A layered activated carbon layer 20 is detachably installed, and the activated carbon layer 20 divides the space in the tower into an upstream space U on the exhaust gas introduction part 11 side and a downstream space L on the clean exhaust gas outlet part 12 side. ing.

活性炭層２０は、上流側空間Ｕに面する通常活性炭層（添着物のない通常の活性炭層）２１と、下流側空間Ｌに面する添着活性炭層（添着物が添着された活性炭層）２２とを互いに密着配置して一つの組層の形態をなしている。勿論、本実施形態で上記通常活性炭層２１と添着活性炭層２２とは互いに離れて両者間に中間空間を形成していてもよい。添着活性炭の添着物としては、ハロゲン化合物（塩素、臭素、フッ素及びこれらの化合物）、金属化合物（鉄、ニッケル、銅、亜鉛及びこれらの化合物）、硫黄等が挙げられる。   The activated carbon layer 20 includes a normal activated carbon layer (ordinary activated carbon layer without an additive) 21 facing the upstream space U, an attached activated carbon layer (an activated carbon layer with an attached material) 22 facing the downstream space L, and Are in close contact with each other to form a single layer. Of course, in the present embodiment, the normal activated carbon layer 21 and the impregnated activated carbon layer 22 may be separated from each other to form an intermediate space therebetween. Examples of the impregnated product of the impregnated activated carbon include halogen compounds (chlorine, bromine, fluorine and their compounds), metal compounds (iron, nickel, copper, zinc and their compounds), sulfur and the like.

かかる構成の本実施形態装置へ、廃棄物焼却炉、セメントキルン炉、非鉄金属製錬炉等からの排ガスを上記排ガス導入部１１から吸着塔１０内へ導入する。上記排ガスには、ダイオキシン類やクロロベンゼン類、クロロフェノール類、多環芳香族炭化水素類及び水銀の有害成分が含まれており、これらが上流側の通常活性炭層２１により吸着される。しかし水銀は、一部が該通常活性炭層２１により吸着されるが、該通常活性炭層２１で吸着除去しきれず残留することがある。   The exhaust gas from a waste incinerator, a cement kiln furnace, a nonferrous metal smelting furnace, or the like is introduced into the adsorption tower 10 from the exhaust gas introduction unit 11 into the apparatus of this embodiment having such a configuration. The exhaust gas contains dioxins, chlorobenzenes, chlorophenols, polycyclic aromatic hydrocarbons, and mercury harmful components, which are adsorbed by the normal activated carbon layer 21 on the upstream side. However, mercury is partly adsorbed by the normal activated carbon layer 21, but may not be completely adsorbed and removed by the normal activated carbon layer 21 and may remain.

上記通常活性炭層２１で吸着除去しきれず残留する水銀は下流側の添着活性炭層２２により吸着除去され、排ガスはすべての有害物質が吸着除去された状態で清浄排ガスとして清浄排ガス導出部１２から排出される。上記通常活性炭層２１で、水銀以外の他の有害成分がすでに吸着除去されているので、添着活性炭層２２は専ら水銀の吸着除去に供することができ、それだけ吸着能力が大きく、また長寿命化ができ長期間使用可能となり、高価な添着活性炭の使用量を抑制できランニングコストの低減が可能となる。   The remaining mercury that cannot be absorbed and removed by the normal activated carbon layer 21 is adsorbed and removed by the adsorbed activated carbon layer 22 on the downstream side, and the exhaust gas is discharged from the clean exhaust gas deriving unit 12 as clean exhaust gas in a state where all harmful substances are adsorbed and removed. The Since the above-mentioned normal activated carbon layer 21 has already adsorbed and removed harmful components other than mercury, the impregnated activated carbon layer 22 can be used exclusively for the adsorption and removal of mercury. It can be used for a long period of time, and the amount of expensive impregnated activated carbon can be suppressed, and the running cost can be reduced.

図１（Ｂ）に示す装置は、単層の活性炭層を収容する吸着塔を二つ用いた構成となっている。上方の上流側の吸着塔１０Ａと下方の下流側の吸着塔１０Ｂとが連通部１３により連通されていて、連通部１３の上下に中間空間Ｍを形成し、該中間空間Ｍを隔てて、上流側の吸着塔１０Ａの上部に排ガス導入部１１がそして下流側の吸着塔１０Ｂの下部に清浄排ガス導出部１２が設けられている。   The apparatus shown in FIG. 1B has a configuration using two adsorption towers that accommodate a single activated carbon layer. The upper upstream adsorption tower 10A and the lower downstream adsorption tower 10B are communicated with each other by a communication part 13, and an intermediate space M is formed above and below the communication part 13, and the intermediate space M is separated from the upstream. An exhaust gas introduction part 11 is provided in the upper part of the adsorption tower 10A on the side, and a clean exhaust gas outlet part 12 is provided in the lower part of the adsorption tower 10B on the downstream side.

上流側の吸着塔１０Ａ内には通常活性炭層２１、下流側の吸着塔１０Ｂ内には添着活性炭層２２が取外し自在に設置されている。この図１（Ｂ）においても、図１（Ａ）の場合同様に、排ガス導入部１１から導入される排ガスは通常活性炭層２１で、ダイオキシン類やクロロベンゼン類、クロロフェノール類、多環芳香族炭化水素類及び一部の水銀が吸着除去され、水銀の残部が添着活性炭層２２で吸着除去される。   An activated carbon layer 21 is normally installed in the upstream adsorption tower 10A, and an attached activated carbon layer 22 is detachably installed in the downstream adsorption tower 10B. In FIG. 1B as well, in the case of FIG. 1A, the exhaust gas introduced from the exhaust gas introduction part 11 is usually an activated carbon layer 21, which is dioxins, chlorobenzenes, chlorophenols, polycyclic aromatic carbonization. Hydrogen and some mercury are adsorbed and removed, and the remaining mercury is adsorbed and removed by the impregnated activated carbon layer 22.

図１（Ａ）、（Ｂ）の形態においては、通常活性炭層２１そして添着活性炭層２２はいずれも単層をなし吸着塔１０Ａ，１０Ｂ内へ取外し自在に設置されていたが、図２（Ａ），（Ｂ）に示す形態においては、通常活性炭層３２Ａと添着活性炭層３２Ｂは、いずれも複数の平行板状をなし、一つのカートリッジ３０Ａ、３０Ｂとしてまとめられていて、該カートリッジをそれぞれユニットとして吸着塔内へ取外し自在に設置できるようになっている。カートリッジ３０Ａとカートリッジ３０Ｂは、複数の平行板をなす活性炭層が、通常活性炭層３２Ａをなしているか、添着活性炭層３２Ｂをなしているかが異なるだけであり、構造上は同じであるので、以下、図２（Ｂ）にもとづき、通常活性炭層３２Ａを有するカートリッジ３０Ａについて説明し、同図において、符号の末文字「Ａ」を「Ｂ」に代えることで、添着活性炭層３２Ｂのカートリッジ３０Ｂについての説明に代えることとする。   1 (A) and 1 (B), the activated carbon layer 21 and the impregnated activated carbon layer 22 are both single layers and are detachably installed in the adsorption towers 10A and 10B. ) And (B), the normal activated carbon layer 32A and the attached activated carbon layer 32B are both formed into a plurality of parallel plates, and are combined as one cartridge 30A, 30B, and each cartridge is used as a unit. It can be installed freely in the adsorption tower. The cartridge 30A and the cartridge 30B differ only in whether the activated carbon layer forming a plurality of parallel plates is usually the activated carbon layer 32A or the attached activated carbon layer 32B, and the structure is the same. The cartridge 30A having the normal activated carbon layer 32A will be described with reference to FIG. 2B. In the same figure, the cartridge 30B of the attached activated carbon layer 32B will be described by replacing the last letter “A” of the reference symbol with “B”. Will be replaced.

図２（Ｂ）に示すように通常活性炭層３２Ａのカートリッジ３０Ａは、例えば、排ガスに対して耐腐食性を有する剛体で構成される筺体３１Ａの内部に、既述の通常活性炭層により形成された平板状の複数の通常活性炭層３２Ａを、それぞれが平行となるように配置することにより構成される。また、間隔をもって互いに隣接する二つの通常活性炭層３２Ａは対をなし、上記筺体３１Ａ内には、この通常活性炭層３２Ａの対が複数配列されて設けられている。図２（Ｂ）では、通常活性炭層３２Ａの三つの対が図示されている。   As shown in FIG. 2B, the cartridge 30A of the normal activated carbon layer 32A is formed of the above-described normal activated carbon layer inside a housing 31A made of a rigid body having corrosion resistance against exhaust gas, for example. A plurality of flat normal activated carbon layers 32A are arranged so as to be parallel to each other. Further, two normal activated carbon layers 32A adjacent to each other with a gap form a pair, and a plurality of pairs of the normal activated carbon layers 32A are arranged in the casing 31A. In FIG. 2 (B), three pairs of normal activated carbon layers 32A are shown.

互いに隣接する通常活性炭層３２Ａの対同士間に形成された第一空間３３Ａは、上方には開放されており、下方には筺体３１Ａの底壁３１Ａ−１で閉塞されている。該第一空間３３Ａの上開口部３３Ａ−１は、排ガスの流入口として機能し、排ガス導入部１１側の上部空間Ｕに連通している。また、各対をなす二つの通常活性炭層３２Ａ同士間に形成された第二空間３４Ａは、上方には筺体３１Ａの上壁３１Ａ−２で閉塞されており、下方には開放されている。該第二空間３４Ａの下開口部３４Ａ−１は、排ガスの流出口として機能し、連通部１３を含んで形成される中間空間Ｍに連通している。そして、この筺体３１Ａを吸着塔１０Ａの内部に、そして筺体３１Ｂを吸着塔１０Ｂの内部に、装入及び取り外し可能、つまり着脱可能に構成することで、カートリッジとしての吸着剤が構成される。このように、吸着剤をカートリッジ構造として、吸着塔内に着脱可能とすることで、吸着剤の交換や装置内の点検等のメンテナンスを容易に行なうことが可能となる。   A first space 33A formed between a pair of adjacent activated carbon layers 32A adjacent to each other is open upward and closed downward by a bottom wall 31A-1 of the housing 31A. The upper opening 33A-1 of the first space 33A functions as an exhaust gas inflow port and communicates with the upper space U on the exhaust gas introduction unit 11 side. Further, the second space 34A formed between the two normal activated carbon layers 32A forming each pair is closed at the upper side by the upper wall 31A-2 of the housing 31A and opened at the lower side. The lower opening 34A-1 of the second space 34A functions as an exhaust gas outlet, and communicates with an intermediate space M formed including the communication portion 13. Then, the adsorbent as a cartridge is configured by configuring the housing 31A inside the adsorption tower 10A and the housing 31B inside the adsorption tower 10B so that they can be inserted and removed, that is, detachable. Thus, by making the adsorbent cartridge structure and being detachable from the adsorption tower, maintenance such as replacement of the adsorbent and inspection of the apparatus can be easily performed.

かかるカートリッジ３０Ａ，３０Ｂを吸着塔１０Ａ，１０Ｂにそれぞれ収めた本実施形態装置へ排ガスが排ガス導入部１１へ導入されると、排ガスは上方の吸着塔１０Ａの排ガス導入部１１から上部空間Ｕを経て上方のカートリッジ３０Ａの複数の第一空間３３Ａへ至り、ここから通常活性炭層３２Ａを透過して第二空間３４Ａへ流入した後、下部空間Ｌへ至り、しかる後、連通部１３を経て、下方の吸着塔１０Ｂに流入する。排ガスが上方の上流側の吸着塔１０Ａで第一空間３３Ａから第二空間３４Ａへ向けて通常活性炭層３２Ａを透過する際、既出の実施形態における通常活性炭層２１の場合と同様な水銀の一部を含む他の有害物質が吸収除去される。   When exhaust gas is introduced into the exhaust gas introduction section 11 into the apparatus of this embodiment in which the cartridges 30A and 30B are housed in the adsorption towers 10A and 10B, the exhaust gas passes through the upper space U from the exhaust gas introduction section 11 of the upper adsorption tower 10A. After reaching the plurality of first spaces 33A of the upper cartridge 30A, and normally passing through the activated carbon layer 32A and flowing into the second space 34A, the lower space L is reached. It flows into the adsorption tower 10B. When exhaust gas permeates through the normal activated carbon layer 32A from the first space 33A toward the second space 34A in the upper upstream adsorption tower 10A, a part of mercury similar to the case of the normal activated carbon layer 21 in the above-described embodiment Other harmful substances including are absorbed and removed.

連通部１３を経て下方の下流側の吸着塔１０Ｂに流入した排ガスは、該吸着塔１０Ｂの第一空間３３Ｂから第二空間３４Ｂへ向けて添着活性炭層３２Ｂで水銀の残部が吸着除去されて清浄排ガスとなって清浄排ガス導出部１２から排出される。   The exhaust gas flowing into the adsorption tower 10B on the lower downstream side through the communication portion 13 is cleaned by adsorbing and removing the remainder of mercury from the first activated carbon layer 32B toward the second space 34B in the adsorption tower 10B. It becomes exhaust gas and is discharged from the clean exhaust gas outlet 12.

このような図２の実施形態によると、通常活性炭層と添着活性炭層はカートリッジ形式となっているので吸着塔への装入そして取外しが容易になるだけでなく、塔内の容積を有効に用いて複数の通常活性炭層そして複数の添着活性炭層を配設できるので、排ガスに対する吸着面積を増大させ吸着能力が向上する。本実施形態では、通常活性炭層と添着活性炭層の両方ともカートリッジ形式にしたが、一方のみをカートリッジ形式として、他方を図１（Ｂ）の単層形式のものとしてもよい。   According to the embodiment of FIG. 2, the activated carbon layer and the impregnated activated carbon layer are usually in the form of a cartridge, so that not only the loading and unloading of the adsorption tower is easy, but also the volume in the tower is used effectively. Since a plurality of normal activated carbon layers and a plurality of impregnated activated carbon layers can be disposed, the adsorption area for exhaust gas is increased and the adsorption capacity is improved. In this embodiment, both the normal activated carbon layer and the attached activated carbon layer are in the cartridge format, but only one may be in the cartridge format and the other in the single layer format in FIG.

図１（Ｂ）、図２（Ａ）の形態においては、吸着塔１０Ａ、１０Ｂの二段の吸着塔が設置されているが、本発明はこのような構成に限らず、排ガス性状に応じて吸着塔の段数を任意に設定することができる。例えば、排ガス中のダイオキシン類やクロロベンゼン類、クロロフェノール類、多環芳香族炭化水素類濃度が高い場合は、上流側に通常活性炭層を設置した吸着塔を二段設置し、下流側に添着活性炭層を設置した吸着塔を一段設置した三段の吸着塔構成としてもよい。また、排ガス中の水銀濃度が高く、ダイオキシン類やクロロベンゼン類、クロロフェノール類、多環芳香族炭化水素類濃度が低い場合は、上流側に添着活性炭層を設置した吸着塔を二段設置し、下流側に通常活性炭層を設置した吸着塔を一段設置した三段の吸着塔構成としてもよい。あるいは、上流側に添着活性炭層を設置した吸着塔を一段設置し、次いで通常活性炭層を設置した吸着塔を一段設置し、その下流に添着活性炭層を設置した吸着塔を一段設置した三段構成としてもよい。   In the form of FIG. 1 (B) and FIG. 2 (A), the adsorption towers 10A and 10B are installed in two stages. However, the present invention is not limited to such a configuration, and according to the exhaust gas properties. The number of adsorption towers can be set arbitrarily. For example, if the concentration of dioxins, chlorobenzenes, chlorophenols, and polycyclic aromatic hydrocarbons in the exhaust gas is high, install an adsorption tower with an activated carbon layer on the upstream side and install the adsorbed activated carbon on the downstream side. It is good also as a three-stage adsorption tower structure which installed the adsorption tower which installed the layer in one step. In addition, when the concentration of mercury in the exhaust gas is high and the concentration of dioxins, chlorobenzenes, chlorophenols, and polycyclic aromatic hydrocarbons is low, two stages of adsorption towers with an attached activated carbon layer are installed upstream, It is good also as a three-stage adsorption tower structure which installed the adsorption tower which normally installed the activated carbon layer in the downstream. Alternatively, a three-stage configuration in which an adsorption tower with an attached activated carbon layer is installed on the upstream side, then an adsorption tower with an activated carbon layer is installed on one stage, and an adsorption tower with an attached activated carbon layer is installed on the downstream side. It is good.

次に、他の形態として、図２におけるカートリッジを図３のごとく通常活性炭層と添着活性炭層とを組層として形成することも可能である。例えば、図３（Ａ）の吸着塔１０内に、カートリッジ３０を配設する。カートリッジ３０は図３（Ｂ）に見られるごとく、活性炭層３２が複数平行に配された図２（Ｂ）と類似の構造をなしている。ここで、各活性炭層３２は、図３（Ｃ）に拡大して図示されているように、通常活性炭層３２Ａと添着活性炭層３２Ｂとを密着させ組層を形成していて、通常活性炭層３２Ａが上流側となる第一空間３３そして添着活性炭層３２Ｂが下流側となる第二空間３４にそれぞれ面して位置している。本実施形態でも、排ガスは第一空間３３から第二空間３４へ向け活性炭層３２を透過する際に、先に、通常活性炭層３２Ａで水銀の一部と他の有害ガスが吸着除去され、後に、添着活性炭層３２Ｂで水銀の残部が吸着除去される。   Next, as another embodiment, the cartridge in FIG. 2 can be formed as a combined layer of a normal activated carbon layer and an attached activated carbon layer as shown in FIG. For example, the cartridge 30 is disposed in the adsorption tower 10 of FIG. As shown in FIG. 3B, the cartridge 30 has a structure similar to that shown in FIG. 2B in which a plurality of activated carbon layers 32 are arranged in parallel. Here, as shown in an enlarged view in FIG. 3 (C), each activated carbon layer 32 has a normal activated carbon layer 32A and an attached activated carbon layer 32B in close contact to form an assembled layer. Are located on the first space 33 on the upstream side, and the attached activated carbon layer 32B faces the second space 34 on the downstream side. Also in this embodiment, when the exhaust gas permeates the activated carbon layer 32 from the first space 33 to the second space 34, first, a part of mercury and other harmful gases are usually adsorbed and removed by the activated carbon layer 32A. The remaining mercury is adsorbed and removed by the impregnated activated carbon layer 32B.

廃棄物焼却炉からの排ガスをバグフィルタで除塵し、排出された排ガス（排ガス流量300Nm3/h，排ガス温度170℃）を表1に示す二段構成の活性炭吸着塔に流通して水銀吸着除去処理を行った。吸着塔に排ガスを流通し、活性炭吸着塔出口の排ガス中の水銀濃度が0.025mg/Nm3まで上昇した時点を活性炭寿命とし、また、活性炭寿命と活性炭単価から活性炭費用の相対比率を、実施例の場合を１．０として求め、結果を表１に示す。 The exhaust gas from the waste incinerator is removed with a bag filter, and the exhaust gas (exhaust gas flow rate 300Nm 3 / h, exhaust gas temperature 170 ° C) is distributed to the two-stage activated carbon adsorption tower shown in Table 1 to remove mercury by adsorption. Processed. The exhaust gas flows into the adsorption tower, a time at which the mercury concentration in the exhaust gas in the activated carbon adsorption tower outlet rose to 0.025 mg / Nm 3 and the activated carbon life, also, the relative proportions of activated carbon costs from activated carbon life and active carbon unit price, Example The case is determined as 1.0, and the results are shown in Table 1.

Figure 2016185510
Figure 2016185510

上流段下流段共に通常活性炭を用いた比較例１では活性炭寿命が短く、頻繁に交換する必要があり、活性炭費用の相対比率が高くなる。上流段下流段共に添着活性炭を用いた比較例２では最も活性炭寿命が長いが、活性炭費用の相対比率が高くなる。上流段に通常活性炭を用い下流段に添着炭を用いた実施例では活性炭費用の相対比率が最も低い結果となり、このような活性炭吸着塔を用いることにより、活性炭費用を低減できることを確認した。   In Comparative Example 1 in which normal activated carbon is used in both the upstream and downstream stages, the activated carbon life is short and needs to be frequently replaced, resulting in a high relative ratio of activated carbon costs. In Comparative Example 2 using impregnated activated carbon in both the upstream and downstream stages, the activated carbon life is the longest, but the relative ratio of the activated carbon cost is high. In the example in which the activated carbon was used in the upstream stage and the impregnated coal was used in the downstream stage, the relative ratio of the activated carbon cost was the lowest, and it was confirmed that the activated carbon cost could be reduced by using such an activated carbon adsorption tower.

１０ 吸着塔
１０Ａ，１０Ｂ 吸着塔
１１ 排ガス導入部
１１ 排ガス導入部
１２ 清浄排ガス導出部
２０ 活性炭層
２１ 通常活性炭層
２２ 添着活性炭層
３０ カートリッジ
３０Ａ，３０Ｂ カートリッジ
３２ 活性炭層
３２Ａ 通常活性炭層
３２Ｂ 添着活性炭層
Ｌ 下部空間
Ｍ 中間空間
Ｕ 上部空間 DESCRIPTION OF SYMBOLS 10 Adsorption tower 10A, 10B Adsorption tower 11 Exhaust gas introduction part 11 Exhaust gas introduction part 12 Clean exhaust gas derivation part 20 Activated carbon layer 21 Normal activated carbon layer 22 Adjunct activated carbon layer 30 Cartridge 30A, 30B Cartridge 32 Activated carbon layer 32A Normal activated carbon layer 32B Adsorbed activated carbon layer L Lower space M Middle space U Upper space

Claims (10)

活性炭層を内蔵する吸着塔を有する排ガス処理装置において、
活性炭層は、添着物のない通常活性炭層と添着物が添着された添着活性炭層とを有することを特徴とする排ガス処理装置。 In the exhaust gas treatment apparatus having an adsorption tower containing an activated carbon layer,
The activated carbon layer has an ordinary activated carbon layer without an additive and an attached activated carbon layer to which an additive is attached. 活性炭層を内蔵する吸着塔を有する排ガス処理装置において、
活性炭層は、添着物のない通常活性炭層と添着物が添着された添着活性炭層とを有し、
通常活性炭層が添着活性炭層に対して上流側に配置されていることを特徴とする排ガス処理装置。 In the exhaust gas treatment apparatus having an adsorption tower containing an activated carbon layer,
The activated carbon layer has a normal activated carbon layer without an additive and an attached activated carbon layer to which an additive is attached,
An exhaust gas treatment apparatus, wherein the activated carbon layer is usually disposed upstream of the impregnated activated carbon layer. 活性炭層を内蔵する吸着塔を有する排ガス処理装置において、
活性炭層は、添着物のない通常活性炭層と添着物が添着された添着活性炭層とを有し、
添着活性炭層が通常活性炭層に対して上流側に配置されていることを特徴とする排ガス処理装置。 In the exhaust gas treatment apparatus having an adsorption tower containing an activated carbon layer,
The activated carbon layer has a normal activated carbon layer without an additive and an attached activated carbon layer to which an additive is attached,
An exhaust gas treatment apparatus, wherein an impregnated activated carbon layer is usually disposed upstream of an activated carbon layer. 通常活性炭層と添着活性炭層は、互いに密着して配設されていることとする請求項１ないし請求項３のうちの一つに記載の排ガス処理装置。   4. The exhaust gas treatment apparatus according to claim 1, wherein the activated carbon layer and the impregnated activated carbon layer are disposed in close contact with each other. 通常活性炭層と添着活性炭層は、互いに分離して配設されており、両者間に中間空間を形成していることとする請求項１ないし請求項３のうちの一つに記載の排ガス処理装置。   The exhaust gas treatment apparatus according to any one of claims 1 to 3, wherein the activated carbon layer and the impregnated activated carbon layer are disposed separately from each other, and an intermediate space is formed therebetween. . 活性炭層を内蔵する吸着塔を有する排ガス処理装置において、
吸着塔は、上流側塔と下流側塔とを連通して形成され、上流側塔に添着物のない通常活性炭層が配設され、下流側塔に添着物が添着された添着活性炭層が配設されていることを特徴とする排ガス処理装置。 In the exhaust gas treatment apparatus having an adsorption tower containing an activated carbon layer,
The adsorption tower is formed by communicating the upstream tower and the downstream tower, and the upstream tower is provided with a normal activated carbon layer without an additive, and the downstream activated tower is provided with an attached activated carbon layer with an additive attached thereto. An exhaust gas treatment apparatus characterized by being provided. 活性炭層を内蔵する吸着塔を有する排ガス処理装置において、
吸着塔は、上流側塔と下流側塔とを連通して形成され、上流側塔に添着物が添着された添着活性炭層が配設され、下流側塔に添着物のない通常活性炭層が配設されていることを特徴とする排ガス処理装置。 In the exhaust gas treatment apparatus having an adsorption tower containing an activated carbon layer,
The adsorption tower is formed by connecting an upstream tower and a downstream tower, and an adsorbed activated carbon layer to which an adduct is attached is arranged on the upstream tower, and a normal activated carbon layer without an adduct is arranged on the downstream tower. An exhaust gas treatment apparatus characterized by being provided. 通常活性炭層と添着活性炭層の少なくとも一方は、塔内に対し装入及び取出し可能なカートリッジを形成していることとする請求項１ないし請求項７のうちの一つに記載の排ガス処理装置。   The exhaust gas treatment apparatus according to any one of claims 1 to 7, wherein at least one of the normal activated carbon layer and the impregnated activated carbon layer forms a cartridge that can be charged into and taken out from the tower. カートリッジは、通常活性炭層と添着活性炭層のいずれかが単独で単層をなす状態で、複数の単層が間隔をもって平行に配置され、隣接する単層同士が塔内空間を上流側空間と下流側空間とに区分するように接続されていることとする請求項８に記載の排ガス処理装置。   The cartridge is usually in a state where one of the activated carbon layer and the attached activated carbon layer alone forms a single layer, a plurality of single layers are arranged in parallel at intervals, and adjacent single layers are connected to the upstream space and the downstream space in the tower. The exhaust gas treatment apparatus according to claim 8, wherein the exhaust gas treatment apparatus is connected so as to be divided into side spaces. 活性炭層を内蔵する吸着塔を有する排ガス処理装置において、
活性炭層は、塔内に対し装入及び取出し可能なカートリッジを形成し
カートリッジは、添着物のない通常活性炭層と添着物が添着された添着活性炭層の二層が密着されて一つの組層をなす状態で、複数の組層が間隔をもって複数平行に配置され、隣接する組層同士が塔内空間を上流側空間と下流側空間とに区分するように接続されていることを特徴とする排ガス処理装置。 In the exhaust gas treatment apparatus having an adsorption tower containing an activated carbon layer,
The activated carbon layer forms a cartridge that can be inserted into and removed from the tower, and the cartridge consists of a normal activated carbon layer without an adhering material and an attached activated carbon layer with an adhering material in close contact with each other to form a single layer. Exhaust gas, wherein a plurality of layered layers are arranged in parallel at intervals, and adjacent layered layers are connected so as to divide the space in the tower into an upstream space and a downstream space. Processing equipment.
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