JPH0245089B2 - - Google Patents
Info
- Publication number
- JPH0245089B2 JPH0245089B2 JP61147724A JP14772486A JPH0245089B2 JP H0245089 B2 JPH0245089 B2 JP H0245089B2 JP 61147724 A JP61147724 A JP 61147724A JP 14772486 A JP14772486 A JP 14772486A JP H0245089 B2 JPH0245089 B2 JP H0245089B2
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- combustion
- combustion furnace
- secondary combustion
- gas
- 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.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 claims description 60
- 239000007789 gas Substances 0.000 claims description 40
- 239000003795 chemical substances by application Substances 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 18
- 239000000567 combustion gas Substances 0.000 claims description 17
- 238000000197 pyrolysis Methods 0.000 claims description 17
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 description 12
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 150000001447 alkali salts Chemical class 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 229910052815 sulfur oxide Inorganic materials 0.000 description 3
- 229920003051 synthetic elastomer Polymers 0.000 description 3
- 239000005061 synthetic rubber Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 159000000011 group IA salts Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Incineration Of Waste (AREA)
- Gasification And Melting Of Waste (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、合成樹脂やゴム等を含む産業・都市
廃棄物を焼却する焼却炉において、この焼却に際
して発生する燃焼ガスに含有する塩化水素や硫黄
酸化物等の有害ガスを除去するための燃焼ガス処
理方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is an incinerator that incinerates industrial and municipal waste containing synthetic resins, rubber, etc. The present invention relates to a combustion gas treatment method for removing harmful gases such as sulfur oxides.
合成樹脂やゴム等を含む産業・都市廃棄物を焼
却すると、合成樹脂やゴムの熱分解によつて塩化
水素や硫黄酸化物の有害ガスが発生するから、こ
の有害ガスを含む燃焼ガスからの熱の回収を行う
場合には、熱回収装置が腐食し、また、そのまま
大気に排出すれば大気を汚染することになる。
When industrial/municipal waste containing synthetic resins and rubber is incinerated, harmful gases such as hydrogen chloride and sulfur oxides are generated due to thermal decomposition of the synthetic resins and rubber. If the heat recovery equipment is recovered, the heat recovery equipment will corrode, and if the heat is discharged directly into the atmosphere, it will pollute the atmosphere.
そこで先行技術としての特開昭54―41565号公
報は、焼却炉内に、炭酸カルシウム、消石灰又は
生石灰等のアルカリ剤を粉末の状態で噴霧して、
燃焼ガス中の塩化水素や硫黄酸化物と反応させる
ことにより、アルカリ塩の固形成分にし、焼却炉
の外における集塵装置において燃焼ガス中より分
離除去することを提案している。 Therefore, Japanese Patent Application Laid-Open No. 54-41565 as a prior art discloses that an alkaline agent such as calcium carbonate, slaked lime, or quicklime is sprayed in powder form into the incinerator.
It is proposed that the alkali salt be made into a solid component by reacting with hydrogen chloride and sulfur oxide in the combustion gas, and then separated and removed from the combustion gas in a dust collector outside the incinerator.
しかし、この先行技術のものは、ストーカ式焼
却炉のような直接燃焼式の焼却炉において、当該
焼却炉内に粉末状のアルカリ剤を噴霧するもので
あるから、燃焼ガス中の有害ガスと反応したアル
カリ塩は、その一部が、ロストル上の焼却物の表
面に落下することになる。
However, since this prior art sprays a powdered alkaline agent into the incinerator in a direct combustion type incinerator such as a stoker type incinerator, it may react with harmful gases in the combustion gas. A portion of the alkali salts will fall onto the surface of the incinerated material on the rostol.
このように焼却物の表面に落下したアルカリ塩
は、高温の焼却物や灰と接触することによつて熱
分解して再び塩化水素や硫黄酸化物等の有害ガス
が発生することになるから、除去効率が低いので
あり、しかも、焼却物の表面に落下したアルカリ
塩は、焼却物の燃焼を妨げるのである。 When the alkali salts that fall onto the surface of the incinerated material come into contact with the high-temperature incinerated material and ash, they will thermally decompose and generate harmful gases such as hydrogen chloride and sulfur oxides. The removal efficiency is low, and moreover, the alkali salts that fall on the surface of the incinerated material impede the combustion of the incinerated material.
その上、焼却物の燃焼は、先づ焼却物が熱分解
して揮発分が発生する際、炭素数の多いタール分
が多量に発生するものであるから、直接燃焼式の
焼却炉内に粉末状のアルカリ剤を噴霧すること
は、当該アルカリ剤の表面に前記タール分が付着
して有害ガスとの接触が阻害されるので、除去率
が低下することになる。 Furthermore, when the incinerated material is first thermally decomposed and volatile matter is generated, a large amount of tar with a large number of carbon atoms is generated. When an alkali agent is sprayed, the tar adheres to the surface of the alkaline agent and prevents contact with harmful gases, resulting in a reduction in the removal rate.
すなわち、ストーカ式焼却炉のような直接燃焼
式の焼却炉内に粉末状のアルカリ剤を噴霧する方
法は、アルカリ剤の有効な反応が得られず有害ガ
スの除去率が低くて、アルカリ剤の噴霧量を多く
しなければならないから、運転経費が嵩むばかり
でなく、以後の集塵装置における負荷が増大し
て、集塵装置が大型化する点に問題がある。 In other words, the method of spraying a powdered alkaline agent into a direct combustion type incinerator such as a stoker type incinerator does not allow an effective reaction of the alkaline agent and the removal rate of harmful gases is low. Since the amount of spray must be increased, there is a problem in that not only does the operating cost increase, but also the load on the subsequent dust collector increases, making the dust collector larger.
本発明は、小量のアルカリ剤の噴霧によつて有
害ガスを効率的に除去できる方法を提供するもの
である。 The present invention provides a method for efficiently removing harmful gases by spraying a small amount of alkaline agent.
このため本発明は、焼却炉を乾溜炉と二次燃焼
炉とに分離し、焼却物を先づ前記乾溜炉内におい
て不完全燃焼させ、発生した可燃性ガスを前記二
次燃焼炉内に導入して完全燃焼を行うようにした
焼却炉において、前記二次燃焼炉内に、炭酸カル
シウム等のアルカリ剤を、当該二次燃焼炉に対す
る完全燃焼用の二次空気に混合した状態で、当該
二次燃焼炉の周囲に多段状に配設した多数個の空
気供給ノズルより、前記二次燃焼炉内における燃
焼ガスの流れ方向と略並列になるように噴霧する
と言う構成を採用したものである。
For this reason, the present invention separates the incinerator into a dry distillation furnace and a secondary combustion furnace, first incompletely combusts the incinerated material in the dry distillation furnace, and introduces the generated flammable gas into the secondary combustion furnace. In the incinerator, the secondary combustion furnace is equipped with an alkaline agent such as calcium carbonate mixed with the secondary air for complete combustion for the secondary combustion furnace. This configuration employs a configuration in which a large number of air supply nozzles arranged in multiple stages around the secondary combustion furnace spray the combustion gas substantially parallel to the flow direction of the combustion gas in the secondary combustion furnace.
このように焼却炉を乾溜炉と二次燃焼炉とに分
離し、焼却物を先づ前記乾溜炉内において不完全
燃焼させ、発生した可燃性ガスを前記二次燃焼炉
内に導入し、当該二次燃焼炉内に供給される二次
空気にて完全燃焼させる場合、二次燃焼炉内の温
度は、前記従来の直接燃焼炉内の温度よりも低い
から、この二次燃焼炉内に炭酸カルシウム等のア
ルカリ剤を噴霧することにより、当該アルカリ剤
と燃焼ガス中の有害ガスとの反反応に適した温度
に維持できると共に、一旦生成したアルカリ塩が
熱分解することを回避できる。
In this way, the incinerator is separated into a dry distillation furnace and a secondary combustion furnace, and the incinerated material is first incompletely combusted in the dry distillation furnace, and the generated flammable gas is introduced into the secondary combustion furnace. When complete combustion is performed using the secondary air supplied to the secondary combustion furnace, the temperature inside the secondary combustion furnace is lower than the temperature inside the conventional direct combustion furnace, so carbon dioxide is By spraying an alkaline agent such as calcium, it is possible to maintain a temperature suitable for the reaction between the alkaline agent and harmful gases in the combustion gas, and to avoid thermal decomposition of the alkali salt once generated.
一方、二次燃焼炉内においては、可燃性ガスと
二次空気との急激な燃焼反応により激しい乱流状
態になつているから、前記アルカリ剤を、二次燃
焼炉に対する完全燃焼用の空気に混合した状態
で、当該二次燃焼の周囲に多段状に配設した多数
個の空気供給ノズルより、前記二次燃焼炉内にお
ける燃焼ガスの流れ方向と略並流になるように噴
霧したことにより、可燃性ガス中のタール分がア
ルカリ剤の表面に付着することを低減できると共
に、可燃性ガスとアルカリ剤との接触時間、延い
ては可燃性ガス中の有害ガスとアルカリ剤との接
触時間を長くすることができる。 On the other hand, in the secondary combustion furnace, a rapid combustion reaction between the flammable gas and the secondary air creates a state of severe turbulence. In the mixed state, the mixture is sprayed from a large number of air supply nozzles arranged in multiple stages around the secondary combustion so that the flow is substantially parallel to the flow direction of the combustion gas in the secondary combustion furnace. , it is possible to reduce the adhesion of tar in the combustible gas to the surface of the alkaline agent, and also to reduce the contact time between the flammable gas and the alkaline agent, as well as the contact time between the harmful gas in the combustible gas and the alkaline agent. can be made longer.
すなわち、二次燃焼炉内に、当該二次燃焼炉内
における可燃性ガスの燃焼用の空気を吹き込むに
際して、例えば、実開昭59―168657号公報に記載
されているように、当該二次燃焼炉における可燃
性ガスに対して旋回流を付与するように吹き込む
場合において、この空気に、アルカリ剤を混合し
た場合には、アルカリ剤は、旋回流の遠心力によ
り旋回流の外側方向に振り飛ばされることになる
から、可燃性ガスとアルカリ剤との接触が、各所
均一に行なわれないと共に、その接触時間も短く
なることにより、アルカリ剤による有害ガスの除
去率が大幅に低下し、アルカリ剤の使用両の増
大、及びその後における集塵装置の負荷の増大を
招来するのである。 That is, when blowing air for combustion of combustible gas in the secondary combustion furnace into the secondary combustion furnace, the secondary combustion When blowing combustible gas in a furnace to create a swirling flow, if an alkali agent is mixed with the air, the alkali agent will be blown outward by the centrifugal force of the swirling flow. As a result, the contact between the flammable gas and the alkaline agent is not uniform in all parts, and the contact time is shortened, resulting in a significant decrease in the removal rate of harmful gases by the alkaline agent. This results in an increase in the number of machines used, and an increase in the load on the dust collector afterwards.
これに対して本発明は、前記のように、アルカ
リ剤を、二次燃焼炉に対する完全燃焼用の空気に
混合した状態で、当該二次燃焼炉の周囲に多段状
に配設した多数個の空気供給ノズルより、前記二
次燃焼炉内における燃焼ガスの流れ方向と略並流
になるように噴霧すると言う構成にしたもので、
これにより、可燃性ガスに対するアルカリ剤の混
合を、各所において均一に行うことができると共
に、その接触時間が長くなるのである。 In contrast, in the present invention, as described above, the alkaline agent is mixed with the air for complete combustion in the secondary combustion furnace, and a large number of the alkaline agents are arranged in multiple stages around the secondary combustion furnace. The air supply nozzle sprays the combustion gas in a direction substantially parallel to the flow direction of the combustion gas in the secondary combustion furnace,
This makes it possible to uniformly mix the alkaline agent with the combustible gas at various locations, and to lengthen the contact time.
従つて、本発明によると、アルカリ剤の噴霧に
よる有害ガスの除去率を、焼却物の燃焼を阻害す
ることなく向上できて、アルカリ剤の使用量を低
減することができるから、運転経費を節減できる
と共に、以降における集塵装置の負荷を軽減で
き、集塵装置の小型化を達成できる効果を有す
る。 Therefore, according to the present invention, the rate of removal of harmful gases by spraying the alkaline agent can be improved without inhibiting the combustion of the incinerated material, and the amount of the alkaline agent used can be reduced, thereby reducing operating costs. This has the effect of reducing the load on the dust collector later on, and making the dust collector smaller.
以下、本発明の実施例を図面について説明する
と、図において符号１は乾溜炉を、符号２は二次
燃焼炉を各々示し、前記乾溜炉１の上部には、焼
却物の投入口３と乾溜ガス出口通路４とを備え、
乾溜炉１の下部には、火格子５及び着火バーナ６
並びに灰固溜箱７を備えると共に、一次送風機９
からの一次空気供給ノズル８が接続されている。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 indicates a dry distillation furnace, and reference numeral 2 indicates a secondary combustion furnace. In the upper part of the dry distillation furnace 1, there is an input port 3 for incinerated material and a dry distillation furnace. and a gas outlet passage 4,
At the bottom of the dry distillation furnace 1, a grate 5 and an ignition burner 6 are installed.
It also includes an ash storage box 7 and a primary blower 9.
A primary air supply nozzle 8 is connected to the primary air supply nozzle 8 from above.
前記二次燃焼炉２には、その上部に前記乾溜ガ
ス出口通路４を接続すると共に補助バーナ１０を
備え、下部に燃焼ガス出口通路１１とダスト溜箱
１２とを備えている。更に、二次燃焼２における
中途部の周囲には、斜め下向きに開口する複数個
の二次空気供給用ノズル１３が、多段状に配設さ
れている。 The secondary combustion furnace 2 has an auxiliary burner 10 connected to the dry distilled gas outlet passage 4 at its upper part, and a combustion gas outlet passage 11 and a dust storage box 12 at its lower part. Further, around the middle part of the secondary combustion 2, a plurality of secondary air supply nozzles 13 that open diagonally downward are arranged in a multi-stage manner.
図中符号１４は、二次空気供給用の送風機を示
し、該二次空気用送風機１４からのダクト１５を
前記各二次空気供給用ノズル１３に各々接続する
と共に、このダクト１５の途中には、当該ダクト
１５内に炭酸カルシウム、消石灰又は生石灰等の
アルカリ剤を粉末やスラリーの状態で供給するた
めのアルカリ剤供給装置１６が設けられている。 Reference numeral 14 in the figure indicates a blower for supplying secondary air, and a duct 15 from the blower 14 for secondary air is connected to each of the secondary air supply nozzles 13. In the duct 15, an alkali agent supply device 16 is provided for supplying an alkali agent such as calcium carbonate, slaked lime, or quicklime in the form of powder or slurry.
また、前記燃焼ガス出口通路１１は、集塵装置
１７、熱回収装置１８及び排風用送風機１９を経
て煙突２０に接続されている。 Further, the combustion gas outlet passage 11 is connected to a chimney 20 via a dust collector 17, a heat recovery device 18, and an exhaust blower 19.
この構成において、焼却物の焼却を行うに際し
ては、先づ、合成樹脂やゴムを含む焼却物を乾溜
炉１内にその投入口３から投入して、火格子５の
上に堆積する一方、排風用送風機１９を起動する
と共に、二次燃焼炉２における補助バーナ１０を
着火し、且つ、二次燃焼炉２内に各二次空気供給
用ノズル１３から二次空気を供給する。 In this configuration, when incinerating materials to be incinerated, the materials to be incinerated containing synthetic resin and rubber are first charged into the dry distillation furnace 1 through the inlet 3, and deposited on the grate 5 while being discharged. At the same time as starting the wind blower 19, the auxiliary burner 10 in the secondary combustion furnace 2 is ignited, and secondary air is supplied into the secondary combustion furnace 2 from each secondary air supply nozzle 13.
次いで、乾溜炉１内の焼却物に着火バーナ６に
て着火し、焼却物が燃焼を始めると、着火バーナ
６を止める一方、一次送風機９及び一次空気供給
ノズル８から、焼却物の完全燃焼に必要な理論空
気量より少ない量（例えば、理論空気量の30％）
に規制した一次空気を乾溜炉１内に供給すること
により、焼却物を不完全燃焼焼させる。 Next, the material to be incinerated in the dry distillation furnace 1 is ignited by the ignition burner 6, and when the material to be incinerated starts burning, the ignition burner 6 is stopped, while air is supplied from the primary blower 9 and the primary air supply nozzle 8 to ensure complete combustion of the material to be incinerated. Volume less than the required theoretical air volume (e.g. 30% of the theoretical air volume)
By supplying primary air regulated to within the dry distillation furnace 1, the incineration material is incompletely combusted.
この不完全燃焼により、乾溜炉１内には、塩化
水素ガス及び／又は硫黄酸化物等の有害ガスを含
む可燃性ガスが発生し、この可燃性ガスは乾溜ガ
ス出口通路４を介して二次燃焼炉２内に導かれ
る。 Due to this incomplete combustion, flammable gas containing harmful gases such as hydrogen chloride gas and/or sulfur oxide is generated in the dry distillation furnace 1, and this combustible gas is transferred to the secondary distillation furnace 1 via the dry distillation gas outlet passage 4. It is guided into the combustion furnace 2.
このようにして二次燃焼炉２内に入つた可燃性
ガスは、二次燃焼炉２内が補助バーナ１０で加熱
されていることから、各二次空気供給用ノズル１
３より当該可燃性ガスの流れ方向と略並流になる
ように吹き込み供給される二次空気と混合して完
全燃焼する。 Since the inside of the secondary combustion furnace 2 is heated by the auxiliary burner 10, the combustible gas that has entered the secondary combustion furnace 2 in this way is transferred to each secondary air supply nozzle 1.
3, the combustible gas is mixed with secondary air that is blown and supplied in a direction substantially parallel to the flow direction of the combustible gas, and is completely combusted.
二次燃焼炉２内での燃焼開始と同時に、アルカ
リ剤供給装置１６を作動させ、アルカリ剤を各二
次空気供給用ノズル１３へのダクト１５に供給す
ると、該アルカリ剤は二次空気に混合された状態
で、二次空気と一緒に二次燃焼炉２内に、当該二
次燃焼炉２内における可燃性ガスの流れ方向と略
並流になるように噴霧される。 Simultaneously with the start of combustion in the secondary combustion furnace 2, the alkaline agent supply device 16 is activated and the alkaline agent is supplied to the duct 15 to each secondary air supply nozzle 13, and the alkaline agent is mixed with the secondary air. In this state, the combustible gas is sprayed together with secondary air into the secondary combustion furnace 2 so that the flow direction is substantially parallel to the flow direction of the combustible gas in the secondary combustion furnace 2.
このアルカリ剤は、二次燃焼炉２内において燃
焼ガス中における有害ガスと反応してアルカリ塩
になり、二次燃焼炉２の底部におけるダオト溜箱
１２に落下する一方、燃焼ガスは、燃焼ガス出口
通路１１から集塵装置１７に入り、ここでダスト
が除去され、次いで熱回収装置１８において熱が
回収されて温度が下がつてのち、煙突２０より大
気中に排出される。 This alkaline agent reacts with harmful gases in the combustion gas in the secondary combustion furnace 2 to become alkaline salts, which fall into the reservoir box 12 at the bottom of the secondary combustion furnace 2. The dust enters the dust collector 17 from the exit passage 11, where the dust is removed, and then the heat is recovered in the heat recovery device 18 to lower the temperature, and then exhausted into the atmosphere through the chimney 20.
なお、アルカリ剤としては、二次燃焼炉２内に
入る可燃性ガスに含まれる有害ガス、及び二次燃
焼炉２内の温度に適合したものを使用すべきであ
り、例えば、有害ガスが塩化水素、硫黄酸化物又
は弗化水素である場合において、二次燃焼炉２内
の温度が300〜800℃のときには消石灰を、二次燃
焼炉２内の温度が700℃以上のときには、炭酸カ
ルシウムを、そして、二次燃焼炉２内の温度が
500〜700℃のときには生石灰を各々使用するのが
好ましく、特に、有害ガスが硫黄酸化物であると
きには水酸化マグネシウムを使用するのが良く、
また、場合によつてはソーダ灰のようなナトリウ
ム塩も使用できることは勿論である。 The alkaline agent should be one that is compatible with the harmful gases contained in the combustible gas entering the secondary combustion furnace 2 and the temperature inside the secondary combustion furnace 2. For example, if the harmful gas is chlorinated, In the case of hydrogen, sulfur oxide, or hydrogen fluoride, use slaked lime when the temperature inside the secondary combustion furnace 2 is 300 to 800°C, and use calcium carbonate when the temperature inside the secondary combustion furnace 2 is 700°C or higher. , and the temperature inside the secondary combustion furnace 2 is
When the temperature is 500 to 700℃, it is preferable to use quicklime, and especially when the harmful gas is sulfur oxide, it is preferable to use magnesium hydroxide.
It goes without saying that sodium salts such as soda ash can also be used in some cases.
図面は本発明実施例の装置の図である。
１……乾溜炉、２……二次燃焼炉、３……焼却
物投入口、４……乾溜ガス出口通路、５……火格
子、６……着火バーナ、８……一次空気供給ノズ
ル、１０……補助バーナ、１１……燃焼ガス出口
通路、１３……二次空気供給用ノズル、１４……
二次空気供給用送風機、１５……ダクト、１６…
…アルカリ剤供給装置、１７……集塵装置、１８
……熱回収装置、１９……排風用送風機、２０…
…煙突。
The drawing is a diagram of an apparatus according to an embodiment of the present invention. 1...Dry distillation furnace, 2...Secondary combustion furnace, 3...Incineration material inlet, 4...Dry distillation gas outlet passage, 5...Grate, 6...Ignition burner, 8...Primary air supply nozzle, 10... Auxiliary burner, 11... Combustion gas outlet passage, 13... Secondary air supply nozzle, 14...
Secondary air supply blower, 15... duct, 16...
... Alkaline agent supply device, 17 ... Dust collector, 18
...Heat recovery device, 19...Exhaust blower, 20...
…chimney.
Claims (1)
却物を先づ前記乾溜炉内において不完全燃焼さ
せ、発生した可燃性ガスを前記二次燃焼炉内に導
入して完全燃焼を行うようにした焼却炉におい
て、前記二次燃焼炉内に、炭酸カルシウム等のア
ルカリ剤を、当該二次燃焼炉に対する完全燃焼用
の二次空気に混合した状態で、当該二次燃焼炉の
周囲に多段状に配設した多数個の空気供給ノズル
より、前記二次燃焼炉内における燃焼ガスの流れ
方向と略並流になるように噴霧することを特徴と
する焼却炉における燃焼ガスの処理方法。1 The incinerator is separated into a dry distillation furnace and a secondary combustion furnace, and the incinerated material is first incompletely combusted in the dry distillation furnace, and the generated flammable gas is introduced into the secondary combustion furnace to achieve complete combustion. In the incinerator, an alkaline agent such as calcium carbonate is mixed with secondary air for complete combustion in the secondary combustion furnace, and the surrounding area of the secondary combustion furnace is mixed with the secondary air for complete combustion for the secondary combustion furnace. A method for treating combustion gas in an incinerator, characterized in that a large number of air supply nozzles arranged in multiple stages spray the combustion gas in a flow direction substantially parallel to the flow direction of the combustion gas in the secondary combustion furnace. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14772486A JPS636313A (en) | 1986-06-24 | 1986-06-24 | Method of processing combustion gas in incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14772486A JPS636313A (en) | 1986-06-24 | 1986-06-24 | Method of processing combustion gas in incinerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS636313A JPS636313A (en) | 1988-01-12 |
| JPH0245089B2 true JPH0245089B2 (en) | 1990-10-08 |
Family
ID=15436738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14772486A Granted JPS636313A (en) | 1986-06-24 | 1986-06-24 | Method of processing combustion gas in incinerator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS636313A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2847469B2 (en) * | 1994-06-02 | 1999-01-20 | 株式会社三船鉄工所 | Combustible waste incinerator |
| JP2847470B2 (en) * | 1994-06-02 | 1999-01-20 | 株式会社三船鉄工所 | Combustible waste incinerator |
| KR20000021030A (en) * | 1998-09-25 | 2000-04-15 | 이해규 | Method of secondary combustion of burned gas and secondary combustion apparatus of waste incinerator |
| JP3847055B2 (en) * | 2000-05-15 | 2006-11-15 | 株式会社タクマ | Secondary combustion equipment for dust-containing exhaust gas |
| KR101291156B1 (en) * | 2011-07-22 | 2013-07-30 | 정봉주 | Combustion device with high efficiency and low polution using solid fuel |
| JP6326212B2 (en) * | 2013-10-01 | 2018-05-16 | 日本碍子株式会社 | Radioactive waste incinerator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117819A (en) * | 1974-08-02 | 1976-02-13 | Mutoh Ind Ltd | |
| JPS6141816A (en) * | 1984-07-31 | 1986-02-28 | Toshiro Watanabe | Burning device for solid fuel made of waste |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59168657U (en) * | 1983-04-26 | 1984-11-12 | 豊島 透 | Gas generator hot air generator |
-
1986
- 1986-06-24 JP JP14772486A patent/JPS636313A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5117819A (en) * | 1974-08-02 | 1976-02-13 | Mutoh Ind Ltd | |
| JPS6141816A (en) * | 1984-07-31 | 1986-02-28 | Toshiro Watanabe | Burning device for solid fuel made of waste |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS636313A (en) | 1988-01-12 |
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