JPH10309436A - Flue gas treatment material - Google Patents

Flue gas treatment material

Info

Publication number
JPH10309436A
JPH10309436A JP9119922A JP11992297A JPH10309436A JP H10309436 A JPH10309436 A JP H10309436A JP 9119922 A JP9119922 A JP 9119922A JP 11992297 A JP11992297 A JP 11992297A JP H10309436 A JPH10309436 A JP H10309436A
Authority
JP
Japan
Prior art keywords
exhaust gas
limestone
particles
incinerator
slaked lime
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9119922A
Other languages
Japanese (ja)
Inventor
Koichi Kobayashi
恒一 小林
Hisaaki Yokota
久昭 横田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP9119922A priority Critical patent/JPH10309436A/en
Publication of JPH10309436A publication Critical patent/JPH10309436A/en
Pending legal-status Critical Current

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  • Treating Waste Gases (AREA)

Abstract

PROBLEM TO BE SOLVED: To remove hydrogen chloride at high efficiency and stably operate an incinerator without causing clogging and deflected flow by using a flue gas treatment material which contains a specified amount of particles with a specified longer diameter and a specified amount of at least one type of ores selected from ores containing limestone, quick lime, and slaked lime as a constituent component and balance oxides. SOLUTION: The main constituent components of this flue gas treatment material containing 90 wt.% of particles with 3-10 mm longer diameter are particles produced by pulverizing ores containing limestone, quick lime, and slaked lime and the content of the main constituent components is controlled to be 50-85 wt.% to the total weight of the material. The constituent components besides limestone, quick lime, and slaked lime, are ores containing 5 wt.% of calcium components. Consequently, proper pressure loss and HC1 reactivity are obtained and deterioration of HC1 removal efficiency due to deficiency of Ca and Cal2 deliquescence and solidification following conversion improvement of HC1 due to excess Ca can be avoided. Consequently, hydrogen chloride is removed from a flue gas from an incinerator at high efficiency and the incinerator is stably operated without causing clogging or deflected flow.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は産業廃棄物、医療廃
棄物及び都市ごみ廃棄物等を焼却する施設等から発生す
る排気ガスを処理する処理材に関し、特に、塩化水素の
除去に好適である排ガス処理材に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a treatment material for treating exhaust gas generated from a facility for incinerating industrial waste, medical waste, municipal waste, and the like, and is particularly suitable for removing hydrogen chloride. It relates to an exhaust gas treatment material.

【0002】[0002]

【従来の技術】産業廃棄物、医療廃棄物及び都市ごみ廃
棄物等の焼却処理時に発生する排気ガス中には、一般的
に、廃棄物中に含まれている塩化ビニル類から生じる塩
化水素が、数百乃至数千ppm含有されている場合があ
る。この塩化水素は環境を汚染する有害ガスであるの
で、排ガス中においてできるだけ低減することが好まし
く、大型炉の場合は、法規制によって、排ガス中の塩化
水素濃度が430ppm以下に規制されている。そこ
で、従来では、各焼却炉内において、種々の方法によっ
て排ガス中の塩化水素の除去を図っている。
2. Description of the Related Art Exhaust gas generated during the incineration of industrial waste, medical waste, municipal waste, and the like generally contains hydrogen chloride generated from vinyl chlorides contained in the waste. , In some cases, from several hundred to several thousand ppm. Since this hydrogen chloride is a harmful gas that pollutes the environment, it is preferable to reduce it in the exhaust gas as much as possible. In the case of large furnaces, the concentration of hydrogen chloride in the exhaust gas is regulated to 430 ppm or less by law. Therefore, conventionally, in each incinerator, hydrogen chloride in the exhaust gas has been removed by various methods.

【0003】例えば、排ガスの通路(煙道)内にスラリ
ー状の消石灰を吹き込むか、又は消石灰粉を吹き込むこ
とによって、排ガス中の塩化水素と消石灰とを反応させ
て、塩化水素を除去する方法がある。
[0003] For example, a method of removing hydrogen chloride by blowing slaked lime in a slurry state or blowing slaked lime powder into an exhaust gas passage (flue) to react the hydrogen chloride in the exhaust gas with slaked lime. is there.

【0004】そこで、消石灰粉を吹き込む方法を使用す
る場合、排ガス中の塩化水素と、煙道中に吹き込んだ粉
体粒子とを反応させるための反応層(反応塔)が大きく
なるという問題点がある。また、この反応層の後段に、
吹き込んだ粉体の未反応材及び反応によって生成された
塩化カルシウムを除去するための集塵機が必要となる。
従って、焼却装置が極めて大型化されてしまうが、塩化
水素を除去するための処理装置に合わせて、高収率集塵
機が設けられている大型の都市ゴミ焼却炉においては、
この方法が採用されている。
[0004] Therefore, when the method of blowing slaked lime powder is used, there is a problem that a reaction layer (reaction tower) for reacting hydrogen chloride in exhaust gas with powder particles blown into a flue becomes large. . Also, at the subsequent stage of this reaction layer,
A dust collector for removing unreacted material of the blown powder and calcium chloride generated by the reaction is required.
Therefore, the incinerator becomes extremely large, but in a large-scale municipal refuse incinerator provided with a high-yield dust collector in accordance with a processing device for removing hydrogen chloride,
This method has been adopted.

【0005】しかしながら、民間事業所及び病院等から
の廃棄物を焼却処理する中、小型焼却炉の場合、大型都
市ごみ焼却炉に採用されている方法を使用しようとする
と、イニシャルコスト及びランニングコストが過大とな
ってしまう。即ち、消石灰粉を吹き込む方法を使用する
場合、中、小型焼却炉においては、焼却炉の部分に対し
て、次段に設ける排ガス処理部の方が極めて大きくな
り、コストも増大する。従って、中、小型焼却炉に好適
であって、より一層簡便である排ガス処理方法が要求さ
れている。
[0005] However, during incineration of waste from private establishments and hospitals, if a small incinerator is used, the initial cost and running cost will be reduced if the method adopted for a large municipal solid waste incinerator is used. It will be excessive. That is, when the method of injecting slaked lime powder is used, in the middle and small incinerators, the exhaust gas treatment section provided in the next stage is extremely larger than the incinerator, and the cost is also increased. Therefore, there is a demand for an even more convenient exhaust gas treatment method suitable for medium and small incinerators.

【0006】そこで、消石灰を主成分とする多孔質の焼
結体をその煙道中に配置し、この消石灰と排ガス中のH
Clとの中和反応によって排ガス中のHClを除去する
方法が提案されている(特開平7−275694号公
報)。この方法は、多孔質の焼結体を煙道中に配置する
のみで、排ガスを処理することができるので、排ガス処
理装置は極めて簡素なものとなる。従って、中、小型焼
却炉の場合であっても、低コストで高効率のHCl除去
をすることができる。
Therefore, a porous sintered body mainly composed of slaked lime is disposed in the flue, and the slaked lime and H in the exhaust gas are disposed.
A method of removing HCl in exhaust gas by a neutralization reaction with Cl has been proposed (Japanese Patent Application Laid-Open No. 7-275694). According to this method, the exhaust gas can be treated only by arranging the porous sintered body in the flue, so that the exhaust gas treatment apparatus is extremely simple. Therefore, even in the case of a medium or small incinerator, HCl can be efficiently removed at low cost.

【0007】[0007]

【発明が解決しようとする課題】しかしながら、特開平
7−275694号公報に記載された方法を使用した場
合、以下に示す問題点が発生する。即ち、消石灰を主成
分とする粒は、その内部までHClと反応して塩化カル
シウムの粒を生成するが、この塩化カルシウムの粒は潮
解性の物質であり、焼却炉の休止時に、外気中の水分を
吸収して水和物となることにより粒が溶解することがあ
る。従って、その後、再び焼却処理を実施した場合に、
塩化カルシウムの粒が固化すると共に、隣接した粒同士
が接合し、処理材自体が処理装置の内部で塊状になって
しまう。その結果、煙道内において排ガスの目詰まりが
発生し、焼却炉の安定した操業が極めて困難になる。
However, when the method described in Japanese Patent Application Laid-Open No. 7-275694 is used, the following problems occur. That is, the particles mainly composed of slaked lime react with HCl to the inside to generate calcium chloride particles.The calcium chloride particles are deliquescent substances, and when the incinerator is stopped, the particles in the outside air are removed. The particles may be dissolved by absorbing water to form a hydrate. Therefore, after that, when the incineration process is performed again,
The particles of calcium chloride are solidified, and adjacent particles are bonded to each other, so that the processing material itself becomes a lump inside the processing apparatus. As a result, clogging of exhaust gas occurs in the flue, and stable operation of the incinerator becomes extremely difficult.

【0008】また、炭酸カルシウム粒子を焼却炉の煙道
中に配置して、排ガス中のHClを除去する方法も開示
されている(特開平8−47617号公報)。
[0008] There is also disclosed a method in which calcium carbonate particles are disposed in a flue of an incinerator to remove HCl in exhaust gas (Japanese Patent Application Laid-Open No. 8-47617).

【0009】しかしながら、この炭酸カルシウム粒子を
使用する方法についても、反応性が高まるにつれて塩化
カルシウムの吸湿溶解現象が起こり、消石灰を主成分と
した焼結体と同様の問題点が発生する。
However, in the method using calcium carbonate particles, as the reactivity increases, the phenomenon of absorption and dissolution of calcium chloride occurs, and the same problem as that of a sintered body containing slaked lime as a main component occurs.

【0010】本発明はかかる問題点に鑑みてなされたも
のであって、焼却炉から発生する排ガス中から、簡素な
方法で高効率に塩化水素を除去することができると共
に、排ガス処理材の溶解及び倒壊等によって排ガス処理
部における目詰まり及び偏流を発生させることなく、安
定して焼却炉を操業することができる排ガス処理材を提
供することを目的とする。
The present invention has been made in view of the above-mentioned problems, and it is possible to efficiently remove hydrogen chloride from exhaust gas generated from an incinerator by a simple method and to dissolve an exhaust gas treating material. An object of the present invention is to provide an exhaust gas treating material that can stably operate an incinerator without causing clogging and drift in an exhaust gas treating section due to collapse or the like.

【0011】[0011]

【課題を解決するための手段】本発明に係る排ガス処理
材は、長径寸法が3乃至10mmの粒子が90重量%以
上であって、その構成成分は石灰石、生石灰及び消石灰
からなる群から選択された少なくとも1種の鉱物が50
乃至85重量%含有され、残部が酸化物であることを特
徴とし、好ましくは、石灰石、生石灰及び消石灰以外の
構成成分である酸化物は総量でカルシウムの含有率が5
重量%以下である。前記酸化物は15乃至50重量%含
有され、具体的には、SiO2,Al23,MgO,T
iO2及びZrO2等の単一酸化物又は複合酸化物を構成
成分とした鉱物である。
According to the present invention, there is provided an exhaust gas treating material comprising 90% by weight or more of particles having a major axis of 3 to 10 mm, the constituents of which are selected from the group consisting of limestone, quicklime and slaked lime. 50 at least one mineral
To 85% by weight, with the balance being oxides. Preferably, oxides that are constituents other than limestone, quicklime and slaked lime have a total calcium content of 5%.
% By weight or less. The oxide is contained in an amount of 15 to 50% by weight, specifically, SiO 2 , Al 2 O 3 , MgO, T
It is a mineral containing a single oxide or a composite oxide such as iO 2 and ZrO 2 as constituent components.

【0012】本発明においては、カルシウムをその主成
分とする石灰石、生石灰及び消石灰からなる群から選択
された少なくとも1種の鉱物を排ガス処理材の成分とす
るので、高効率でHClを除去することができる。一
方、排ガス処理材の15重量%以上の構成成分は、カル
シウム含有率が5重量%以下であるため、排ガス中にあ
っても潮解現象によって、排ガス処理材が溶解固化して
かたまってしまうことがなく、容易に新材と交換でき、
焼却炉を円滑に運転操業することができる。
In the present invention, at least one mineral selected from the group consisting of limestone, quick lime and slaked lime having calcium as a main component is used as a component of the exhaust gas treatment material, so that HCl can be removed with high efficiency. Can be. On the other hand, since the calcium content of the constituents of 15% by weight or more of the exhaust gas treating material is 5% by weight or less, the exhaust gas treating material may be dissolved and solidified due to the deliquescence phenomenon even in the exhaust gas. No, it can be easily replaced with new material,
The incinerator can be operated smoothly.

【0013】[0013]

【発明の実施の形態】本願発明者等は、排ガスの煙道内
に配置したHCl除去材層(排ガス処理材)が塊状にな
ることなく、高効率でHClを除去することができる方
法を開発すべく種々研究を行った。その結果、粒子の寸
法が規定された石灰石、生石灰及び消石灰からなる群か
ら選択された少なくとも1種と、カルシウム含有量が少
ない構成成分とで構成された排ガス処理材を使用するこ
とにより、前記課題を解決することができることを見い
出した。
BEST MODE FOR CARRYING OUT THE INVENTION The present inventors have developed a method capable of removing HCl with high efficiency without causing the HCl removing material layer (exhaust gas treating material) disposed in the flue of exhaust gas to be clumped. In order to do this, we conducted various studies. As a result, by using an exhaust gas treating material composed of at least one selected from the group consisting of limestone, quicklime and slaked lime having a defined particle size, and a component having a low calcium content, the above problem can be solved. Can be solved.

【0014】以下、本発明における排ガス処理材につい
て、石灰石、生石灰、消石灰の粒子径規定理由及び組成
限定理由等について説明する。
Hereinafter, regarding the exhaust gas treating material of the present invention, the reasons for defining the particle size of limestone, quick lime and slaked lime and the reasons for limiting the composition will be described.

【0015】石灰石の粒子径:長径が3乃至10mmで
ある粒子が90重量%以上 排ガス処理材は焼却炉のフィルタ部に充填され、排ガス
煙道中を通過するHClを除去する効果を有する。本発
明においては、この排ガス処理材を構成する成分の粒子
径(長径)を規定することにより、適切な圧力損失とH
Cl反応性を得ることができる。即ち、排ガス処理材に
おいて、長径が3乃至10mmである粒子が90重量%
未満であり、長径が3mm未満である粒子が増加する
と、フィルタ層が目詰まりすることがあり、これによ
り、圧力損失が増大する。一方、排ガス処理材におい
て、長径が3乃至10mmである粒子が90重量%未満
であり、長径が10mmを超える粒子が増加すると、H
Clに対する反応性が低下し、高効率でHClを除去す
ることができなくなる。従って、排ガス処理材の粒子径
としては、長径が3乃至10mmである粒子が90重量
%以上であるものとする。
[0015] Limestone particle diameter: 3 to 10 mm in major axis
Exhaust gas treating material having 90% by weight or more of particles is filled in a filter portion of an incinerator, and has an effect of removing HCl passing through an exhaust gas flue. In the present invention, by defining the particle diameter (major diameter) of the component constituting the exhaust gas treating material, an appropriate pressure loss and H
Cl reactivity can be obtained. That is, 90% by weight of particles having a major axis of 3 to 10 mm in the exhaust gas treatment material.
When the number of particles having a major axis of less than 3 mm increases, the filter layer may be clogged, thereby increasing the pressure loss. On the other hand, in the exhaust gas treating material, when particles having a major axis of 3 to 10 mm are less than 90% by weight and particles having a major axis exceeding 10 mm increase, H
The reactivity to Cl decreases, and it becomes impossible to remove HCl with high efficiency. Therefore, as the particle diameter of the exhaust gas treating material, particles having a major axis of 3 to 10 mm are 90% by weight or more.

【0016】本発明において規定する粒子径を有する排
ガス処理材の主要構成成分である石灰石、生石灰、消石
灰粒子はそれらの鉱石を破砕したものであると、容易に
入手することができると共に、コスト及び原料供給の点
で好ましい。
The limestone, quicklime and slaked lime particles, which are the main constituents of the exhaust gas treating material having the particle diameter specified in the present invention, can be easily obtained if these ores are crushed, and the cost and cost are reduced. It is preferable from the viewpoint of raw material supply.

【0017】なお、本発明において規定する粒子の長径
寸法とは、その粒子について、種々の方向で直径を測定
した場合の最も長い部分の寸法をいう。
The major dimension of the particles defined in the present invention refers to the dimension of the longest part of the particle when its diameter is measured in various directions.

【0018】処理材全重量あたりの石灰石、生石灰又は
消石灰の含有率:総量で50乃至85重量% 本発明において、石灰石、生石灰及び消石灰の含有率が
50重量%以下の場合は、排ガス中のHClと反応させ
るためのCaが少なくなることから、HClの除去効率
が低く、このため大量の排ガス処理材を設ける必要があ
る。
Limestone, quicklime or
Slaked lime content: 50 to 85% by weight in total In the present invention, when the content of limestone, quicklime and slaked lime is 50% by weight or less, Ca for reacting with HCl in exhaust gas is reduced, so that HCl is added. Removal efficiency is low, and it is necessary to provide a large amount of exhaust gas treatment material.

【0019】また、これらの含有率が85重量%を超え
る場合においては、HClと反応させるためのCa源が
過剰となり、HCl除去効率は高くなるものの、排ガス
処理材中のカルシウム成分のHCl転化率が高くなれば
なる程、CaCl2による潮解を生じやすくなる。そし
て、潮解したCaCl2が隣接する石灰石、生石灰及び
消石灰からなる粒子を接合し、次に、焼却開始に伴う加
熱作用を受けたときに潮解したCaCl2が固化してし
まい、フィルターとしての通気性が悪くなる。更に、排
ガス処理材の交換時に交換対象の排ガス処理材がかたま
ってしまうので、交換作業が極めて困難である。また、
HClと反応して生成したCaCl2が潮解しなければ
問題ないが、焼却対象物には多くの水分が含まれている
こと、及び、排煙突のドラフト効果により排ガス処理材
部には常に外気が通流していて、炉の休止時に、吸湿に
よる潮解がさけられないことから、排ガス処理材の潮解
は回避できない。このため、石灰石、生石灰及び消石灰
の含有量は85重量%以下とする。従って、排ガス処理
材中の石灰石、生石灰、消石灰の含有率は、処理材全重
量あたり50乃至85重量%とする。
When the content exceeds 85% by weight, the Ca source for reacting with HCl becomes excessive and the HCl removal efficiency increases, but the HCl conversion rate of the calcium component in the exhaust gas treatment material is increased. Is higher, the deliquescence by CaCl 2 is more likely to occur. Then, the deliquescent CaCl 2 joins particles made of adjacent limestone, quicklime and slaked lime, and then, when subjected to a heating effect accompanying the start of incineration, the deliquescent CaCl 2 solidifies, and the air permeability as a filter is reduced. Gets worse. Further, when the exhaust gas treating material is exchanged, the exhaust gas treating material to be exchanged collects, so that the exchange operation is extremely difficult. Also,
There is no problem as long as CaCl 2 generated by reacting with HCl does not deliquesce. However, since the incineration target contains a lot of water and the draft effect of the chimney stack, the outside air is always in the exhaust gas treatment material section. The deliquescent of the exhaust gas treating material cannot be avoided because the current flows and the deliquescent due to moisture absorption cannot be avoided when the furnace is stopped. Therefore, the content of limestone, quicklime and slaked lime is set to 85% by weight or less. Therefore, the content of limestone, quicklime and slaked lime in the exhaust gas treatment material is set to 50 to 85% by weight based on the total weight of the treatment material.

【0020】なお、本発明においては、石灰石、生石
灰、消石灰以外の構成成分は、カルシウム成分が5重量
%以下の鉱物である必要があり、その理由は塩化カルシ
ウムとなっての吸湿及び潮解性が殆ど生じない鉱物を積
極的に含有させることにある。
In the present invention, the constituents other than limestone, quicklime and slaked lime must be minerals having a calcium content of 5% by weight or less, because of the reason that calcium chloride becomes hygroscopic and deliquescent. It is to actively contain minerals that hardly occur.

【0021】[0021]

【実施例】以下、本発明に係る排ガス処理材の実施例に
ついてその比較例と比較して具体的に説明する。
EXAMPLES Examples of the exhaust gas treating material according to the present invention will be specifically described below in comparison with comparative examples.

【0022】下記表1は排ガス処理条件を示す。96重
量%以上のものが長径寸法が3乃至10mmの範囲にあ
る石灰石を焼却炉の排ガス煙道中に配置し、HClの平
均の入口濃度を1500ppmとして、初期のHClの
除去効率を測定すると共に、HClの除去効率が70%
以下となるまでの稼働日数を測定した。また、使用時間
の経過に伴う処理材の圧力損失を評価した。これらの評
価結果を下記表2に示す。なお、下記表2中の圧力損失
の評価欄においては、圧力損失の上昇によって排気の通
過が妨げられ、安定操業ができなかったものを×とし、
スムーズに排気を通過させることができ、安定操業がで
きたものを○とした。
Table 1 below shows exhaust gas treatment conditions. 96% by weight or more of limestone having a major axis in the range of 3 to 10 mm is placed in the flue gas of an incinerator, and the average HCl concentration is set to 1500 ppm, and the initial HCl removal efficiency is measured. HCl removal efficiency 70%
The number of working days until the following was reached was measured. In addition, the pressure loss of the treated material over the use time was evaluated. The evaluation results are shown in Table 2 below. In the evaluation column of the pressure loss in Table 2 below, the passage of the exhaust gas was hindered by the increase in the pressure loss, and the case where stable operation could not be performed was represented by x.
The sample that was able to pass the exhaust gas smoothly and was able to operate stably was marked as “○”.

【0023】[0023]

【表1】 [Table 1]

【0024】[0024]

【表2】 [Table 2]

【0025】上記表1、2に示すように、実施例No.
1乃至3は石灰石及び粒状成形体の長径寸法が本発明に
おいて規定した範囲内であると共に、石灰石の含有量が
規定範囲内であるので、HCl除去効率が70%以下と
なるまで、その効果を1週間以上維持することができ、
また排ガス処理部での目詰りも生じなかった。
As shown in Tables 1 and 2, Example No.
In Nos. 1 to 3, since the major axis of the limestone and the granular compact is within the range specified in the present invention and the content of limestone is within the specified range, the effects thereof are maintained until the HCl removal efficiency becomes 70% or less. Can be maintained for more than a week,
Also, no clogging occurred in the exhaust gas treatment section.

【0026】一方、比較例No.4は石灰石の比率が低
いのでHCl除去効率が実施例と比較して低く、実用に
供さない。比較例No.5は石灰石が100重量%であ
り、HCl除去効率は実施例よりも高かったが、5日間
の使用によって目詰りが発生し、圧力損失が大きくなっ
た。
On the other hand, in Comparative Example No. No. 4 has a low ratio of limestone, so the HCl removal efficiency is lower than that of the example, and is not practical. Comparative Example No. In No. 5, the limestone was 100% by weight, and the HCl removal efficiency was higher than that of the example. However, clogging occurred and the pressure loss increased after 5 days of use.

【0027】比較例No.8は石灰石中が90重量%で
あり、HCl除去効率は実施例よりは高いものの、やは
り6日間の使用によって目詰りが発生し、圧力損失が大
きくなった。
Comparative Example No. In No. 8, the content in limestone was 90% by weight, and although the HCl removal efficiency was higher than that of the example, clogging occurred after use for 6 days, and the pressure loss increased.

【0028】通常、HClの除去効率が70%以下まで
低下した場合を処理材の交換目安とするが、本実施例に
おいては、HClの除去効率が70%以下に低下するま
での期間が1週間以上であり、十分に実用に供すること
ができる。
Normally, when the removal efficiency of HCl is reduced to 70% or less, it is assumed that the treatment material is replaced. In this embodiment, the period until the removal efficiency of HCl is reduced to 70% or less is one week. That is all for practical use.

【0029】[0029]

【発明の効果】以上詳述したように、本発明によれば、
粒子長径を規定し、石灰石、生石灰及び消石灰の総量を
50乃至85重量%に規定したので、本発明に係る排ガ
ス処理材により、焼却炉から発生する排ガス中から、簡
素な方法で高効率に塩化水素を除去することができると
共に、排ガス処理材の溶解及び倒壊等によって排ガス処
理部における目詰まり及び偏流を発生させることなく、
安定して焼却炉を操業することができる。
As described in detail above, according to the present invention,
Since the major axis of the particles is specified and the total amount of limestone, quicklime and slaked lime is specified to be 50 to 85% by weight, the exhaust gas treating material according to the present invention efficiently and efficiently converts the exhaust gas generated from the incinerator into the exhaust gas. Hydrogen can be removed, and without causing clogging and drift in the exhaust gas treatment section due to dissolution and collapse of the exhaust gas treatment material,
The incinerator can be operated stably.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 長径寸法が3乃至10mmの粒子が90
重量%以上であって、その構成成分は石灰石、生石灰及
び消石灰からなる群から選択された少なくとも1種の鉱
物が50乃至85重量%含有され、残部が酸化物である
ことを特徴とする排ガス処理材。
1. The method according to claim 1, wherein the particles having a major diameter of 3 to 10 mm are 90
Exhaust gas treatment, characterized in that at least one mineral selected from the group consisting of limestone, quicklime and slaked lime is contained in an amount of 50 to 85% by weight, and the balance is oxide. Wood.
【請求項2】 前記石灰石、生石灰及び消石灰以外の構
成成分は総量でカルシウムの含有率が5重量%以下であ
ることを特徴とする請求項1に記載の排ガス処理材。
2. The exhaust gas treating material according to claim 1, wherein the constituents other than limestone, quicklime and slaked lime have a total calcium content of 5% by weight or less.
JP9119922A 1997-05-09 1997-05-09 Flue gas treatment material Pending JPH10309436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9119922A JPH10309436A (en) 1997-05-09 1997-05-09 Flue gas treatment material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9119922A JPH10309436A (en) 1997-05-09 1997-05-09 Flue gas treatment material

Publications (1)

Publication Number Publication Date
JPH10309436A true JPH10309436A (en) 1998-11-24

Family

ID=14773507

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9119922A Pending JPH10309436A (en) 1997-05-09 1997-05-09 Flue gas treatment material

Country Status (1)

Country Link
JP (1) JPH10309436A (en)

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