JPH0487624A - Treatment of waste gas generated by combustion of municipal refuse - Google Patents
Treatment of waste gas generated by combustion of municipal refuseInfo
- Publication number
- JPH0487624A JPH0487624A JP2201191A JP20119190A JPH0487624A JP H0487624 A JPH0487624 A JP H0487624A JP 2201191 A JP2201191 A JP 2201191A JP 20119190 A JP20119190 A JP 20119190A JP H0487624 A JPH0487624 A JP H0487624A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- bag filter
- powder layer
- combustion exhaust
- activated carbon
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 29
- 239000002912 waste gas Substances 0.000 title abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 27
- 239000004927 clay Substances 0.000 claims abstract description 21
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 19
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 19
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 15
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 238000007664 blowing Methods 0.000 claims abstract description 3
- 239000002699 waste material Substances 0.000 claims description 18
- 238000004056 waste incineration Methods 0.000 claims description 5
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 45
- 150000004045 organic chlorine compounds Chemical class 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000003463 adsorbent Substances 0.000 description 5
- 150000002013 dioxins Chemical class 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 101100353042 Mycobacterium bovis (strain BCG / Pasteur 1173P2) lnt gene Proteins 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012717 electrostatic precipitator Substances 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 229940098458 powder spray Drugs 0.000 description 2
- 101150028022 ppm1 gene Proteins 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 241001417495 Serranidae Species 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- -1 dioxins Chemical class 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、都市ごみ燃焼排ガスの処理方法に係り、特に
、都市ごみ燃焼時に発生する燃焼排ガス中に含まれる有
機塩素化合物を除去できる処理方法に関するものである
。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for treating municipal waste combustion exhaust gas, and in particular, a treatment method that can remove organic chlorine compounds contained in the combustion exhaust gas generated during municipal garbage combustion. It is related to.
従来、都市ごみ焼却設備の集塵設備として、電気集塵機
が多く使用されて来た。しかし最近、−層の高効率集塵
の必要性のだｔ、またごみ燃焼排ガス中の塩化水素等酸
性ガスをより高効率で除去する必要性から電気集塵機の
かわりにハグツイルターを使用する設備が散見されて来
ている。これはバグフィルタ−ろ布表面のダスト層とご
み燃焼排ガスの固気接触効率の優れた点を利用し、アル
カリ剤として消石灰粉をバグフィルタ−の前に添加し、
バグフィルタ−ろ布表面のダスト層での固気中和反応に
より、塩化水素等酸性ガスをより高効率で除去するため
と考えられる。この消石灰粉添加バグフィルタ−集塵方
法は、ポリクロロジベンゾ−ｐ−ダイオキシン（以下Ｐ
ＣＤＤｓという）やポリクロロジベンゾフラン（以下Ｐ
ＣＤＦ ｓという）等の排ガス中の有機塩素化合物が除
去されることが最近明らかとなってきた。Conventionally, electrostatic precipitators have often been used as dust collection equipment for municipal waste incineration facilities. However, recently, due to the need for high-efficiency dust collection in the negative layer, and the need to more efficiently remove acidic gases such as hydrogen chloride from waste combustion exhaust gas, there are some facilities that use hugtwilters instead of electrostatic precipitators. It's been happening. This takes advantage of the excellent solid-gas contact efficiency between the dust layer on the surface of the bag filter filter cloth and the waste combustion exhaust gas, and adds slaked lime powder as an alkali agent before the bag filter.
This is thought to be due to the fact that acidic gases such as hydrogen chloride are removed with higher efficiency by the solid gas neutralization reaction in the dust layer on the surface of the bag filter filter cloth. This bag filter dust collection method with the addition of slaked lime powder uses polychlorodibenzo-p-dioxin (hereinafter referred to as P-dioxin).
CDDs) and polychlorodibenzofurans (hereinafter referred to as P
It has recently become clear that organic chlorine compounds in exhaust gas such as CDFs can be removed.
しかしながら、上記の消石灰粉添加バグフィルタ−集塵
方法においても、排ガス中にダイオキシ等の有機塩素化
合物はかなりの量残留して排出される。However, even in the bag filter/dust collection method with the addition of slaked lime powder, a considerable amount of organic chlorine compounds such as dioxygen remains in the exhaust gas and is discharged.
そこで、本発明は、この消石灰粉添加ハゲフィルター集
塵方法を基礎にして、さらに高効率で排ガス中のダイン
オキシ等の有機塩素化合物を除去できる燃焼排ガスの処
理方法を提供することを目的とする。Therefore, an object of the present invention is to provide a combustion exhaust gas treatment method that can remove organic chlorine compounds such as dyne oxy in the exhaust gas with higher efficiency, based on this bald filter dust collection method with the addition of slaked lime powder.
上記目的を達成するために、本発明では、集塵装置とし
てバグフィルタ−を用いる都市ごみ燃焼排ガスの処理方
法において、バグフィルタ−ろ布表面に粉末活性炭及び
／又は活性白土の粉体層を形成させ、燃焼排ガスをこの
粉体層に通すことを特徴とする都市ごみ燃焼排ガスの処
理方法としたものである。In order to achieve the above object, the present invention provides a method for treating municipal waste combustion exhaust gas using a bag filter as a dust collector, in which a powder layer of powdered activated carbon and/or activated clay is formed on the surface of the bag filter filter cloth. This is a method for treating municipal waste combustion exhaust gas, which is characterized by passing the combustion exhaust gas through this powder bed.
上記処理方法において、粉体層を形成させるには、集塵
装置の入口ダクト内又は集塵装置内に粉末活性炭及び／
又は活性白土を吹き込むことによって形成できる。そし
て、バグフィルタ−ろ布表面には、さらに消石灰の粉体
層を形成させるのがよい。In the above treatment method, in order to form a powder layer, powdered activated carbon and/or
Alternatively, it can be formed by blowing activated clay. Further, it is preferable to form a powder layer of slaked lime on the surface of the bag filter cloth.
また、本発明において、燃焼排ガスのバクフィルター人
口温度は１２０〜２００℃の範囲が好ましい。Moreover, in the present invention, the back filter population temperature of the combustion exhaust gas is preferably in the range of 120 to 200°C.
次に、本発明を第１図に示すフローシートに従って説明
する。Next, the present invention will be explained according to the flow sheet shown in FIG.
第１図において、焼却炉１を出た燃焼排ガスは廃熱ボイ
ラーや水噴射室（ガス冷却室）２を通過して、さらに水
噴射室等温度調節室３を通過して排ガス温度を１２０℃
〜２００℃に調節してバグフィルタ−４に入る。バグフ
ィルタ−前の煙道やバグフィルタ−内に消石灰粉を添加
されるが、更に本発明では粉末活性炭、または活性白土
が消石灰粉と同じ位置に噴霧され、バグフィルタ−のろ
布表面に粉体層を形成し、ダイオキシン等有機塩素化合
物を吸着捕捉する。In Fig. 1, combustion exhaust gas leaving an incinerator 1 passes through a waste heat boiler and a water injection chamber (gas cooling chamber) 2, and then passes through a temperature control chamber 3 such as a water injection chamber to lower the exhaust gas temperature to 120°C.
Adjust the temperature to ~200°C and enter bag filter-4. Slaked lime powder is added to the flue in front of the bag filter or inside the bag filter, but in the present invention, powdered activated carbon or activated clay is also sprayed at the same location as the slaked lime powder, and the powder is added to the filter cloth surface of the bag filter. Forms a body layer that adsorbs and captures organic chlorine compounds such as dioxins.
消石灰粉は消石灰貯槽５から定量的に切り出され、ブロ
アー７によって圧送され、バグフィルタ−前の煙道やバ
グフィルタ−内に注入される。The slaked lime powder is cut out quantitatively from the slaked lime storage tank 5, is pumped by a blower 7, and is injected into the flue in front of the bag filter or into the bag filter.
粉末活性炭も粉末活性炭貯槽８から定量的に切り出され
、ブロアー１０によって圧送され、バグフィルタ−前の
煙道やバグフィルタ−内に注入される。活性白土も粉末
活性炭と同様に排ガス処理系統に注入される。Powdered activated carbon is also cut out quantitatively from the powdered activated carbon storage tank 8, fed under pressure by a blower 10, and injected into the flue in front of the bag filter or into the bag filter. Activated clay is also injected into the exhaust gas treatment system in the same way as powdered activated carbon.
粉末活性炭、活性白土の注入量は、焼却する都市ごみ１
トン当たり、粉末活性炭で約０．５〜１０ｋｇ、活性白
土で約１〜２０ｋｇとするのが好ましい。The amount of powdered activated carbon and activated clay injected is 1 of the municipal waste to be incinerated.
Preferably, the amount is about 0.5 to 10 kg for powdered activated carbon and about 1 to 20 kg for activated clay per ton.
本発明では、ダイオキシン等有機塩素化合物を吸着する
粉末活性炭、又は活性白土を単独又は双方で集塵機の入
口ダクト、又はバグフィルタ−内に噴霧し、バグフィル
タ−ろ布表面に粉体層（粉末活性炭、または活性白土を
含む）を形成し、この粉体層で排ガス中の有機物質を固
気吸着反応により高効率で反応し、都市ごみ燃焼排ガス
中に含まれるダイオキシン等有機塩素化合物を除去せし
めるものである。In the present invention, powdered activated carbon or activated clay, which adsorbs organic chlorine compounds such as dioxins, is sprayed singly or both into the inlet duct of the dust collector or into the bag filter, and a powder layer (powdered activated carbon , or activated clay), and in this powder layer, organic substances in exhaust gas are reacted with high efficiency by solid gas adsorption reaction, and organic chlorine compounds such as dioxins contained in municipal waste combustion exhaust gas are removed. It is.
以下、本発明を実施例により具体的に説明するが、本発
明はこれらの実施例に限定されない。EXAMPLES Hereinafter, the present invention will be specifically explained with reference to Examples, but the present invention is not limited to these Examples.
実施例−１
処理ガス量１０００ ［Ｎｍ３／ｈ 〕のパイロットテ
スト装置にてごみ燃焼排ガス中のダイオキシン等有機塩
素化合物の除去テストを第１図のフローシートに従って
行った。実プラントごみ燃焼排ガスを一部本パイロット
テスト装置に導入して処理対象ガスとした。Example 1 A test for removing organic chlorine compounds such as dioxins from waste combustion exhaust gas was conducted using a pilot test device with a processing gas amount of 1000 [Nm3/h] according to the flow sheet shown in FIG. A portion of the waste combustion exhaust gas from an actual plant was introduced into this pilot test device and used as the target gas for treatment.
パイロットテスト装置の仕様
温度調節室 直径６００ｍｍｘ直胴部長さ３５５０ｍ
ｍ２流体ノズルによる水噴霧
バグフィルタ−ろ布面積 ２０ ［ｍ’ｌ処理
対象ガス
温 度 ２３０〔℃〕（廃熱ボイラー通過後）平均組
成 ０□１０〔％〕。、Ｂ、 ＣＯ２１０［％］。、
Ｂ。Pilot test equipment specifications Temperature control chamber Diameter 600mm x Straight body length 3550m
Water spray bag filter by m2 fluid nozzle - filter cloth area 20 [m'l target gas temperature 230 [°C] (after passing through waste heat boiler) average composition 0□10 [%]. , B, CO210 [%]. ,
B.
Ｈ２Ｏ１５［％〕Ｗ、Ｂ、 ＨＣＩ ４００ Ｃｐｐ
ｍ〕テスト（ａ）−比較例
吸着剤無添加の場合
温度調節室 噴霧水量 ２７．３ ［１／ｈｌ消石灰
粉噴霧量 １．９［ｋｇ／ｌ＋］バグフィルタ
ー入口排ガスは温度１６５［ｔｌＨＣＩ ６３
［ｐｐｍ〕
となった。ＰＣＤＤｓ５２ ［％〕ＰＣＤＦｓ６７ Ｅ
％〕の除去効率であった。H2O15 [%] W, B, HCI 400 Cpp
m] Test (a) - Comparative example When no adsorbent is added Temperature control chamber Amount of sprayed water 27.3 [1/hl Amount of slaked lime powder sprayed 1.9 [kg/l+] Exhaust gas at the inlet of the bag filter has a temperature of 165 [tlHCI 63
[ppm]. PCDDs52 [%] PCDFs67 E
%] removal efficiency.
テスト（ｂ）一実施例
吸着剤として活性炭添加の場合
温度調節室 噴霧水量 ２７．３ ［１／ｈ）消石灰粉
噴霧量 １．９［ｋｇ／ｈ］粉末活性炭噴霧量
０．３［ｋｇ／ｈ］（本設備のごみ焼却
量は２．５ Ｃｔｏｎ／
ｊ
排ガス量は２００００ ［Ｎｍ３／ｈｌであった。パイ
ロット装置の処理排ガス量は１０００ ［Ｎｍ３／ｈＥ
だから２．５ｘ １０００／２００００＝ ０．１２５
Ｃｔｏｎ／ｈｌのごみ焼却分の排ガス量に相当、従っ
て粉末活性炭噴霧量は０．３／ ０．１２５＝２．４
［ｋｇ／ Ｄミｌ ｔｏｎ３になった。Test (b) Example When activated carbon is added as an adsorbent Temperature control chamber Amount of sprayed water 27.3 [1/h) Amount of slaked lime powder sprayed 1.9 [kg/h] Amount of powdered activated carbon sprayed 0.3 [kg/h] ] (The amount of waste incinerated by this equipment was 2.5 Cton/j, and the amount of exhaust gas was 20,000 [Nm3/hl. The amount of waste gas processed by the pilot device was 1,000 [Nm3/hE.
So 2.5x 1000/20000 = 0.125
Equivalent to the amount of exhaust gas from waste incineration of Cton/hl, therefore the amount of powdered activated carbon sprayed is 0.3/0.125=2.4
[kg/Dmil ton3.
バグフィルター入口排ガスはテスト１と同様温度１６５
［ｔ）で
ＨＣＩ ４８ ［ｐＩｌ］ｍ〕
となった。ＰＣＤＤｓ９６ 〔％：］ ＰＣＤＦｓ９７
［％〕の著しい除去効率であった。The temperature of the exhaust gas at the bag filter inlet is 165 as in test 1.
[t) resulted in HCI 48 [pIl]m]. PCDDs96 [%:] PCDFs97
It had a remarkable removal efficiency of [%].
テスト（Ｃ）−比較例
吸着剤無添加の場合
温度調節室 噴霧水量 ４１．５ ［１／ｈｌｌ消石
灰粉噴霧量 １．９［ｋｇ／ｈ〕バグフィルタ
ー入口排ガスは温度１４０［ｔｌＨＣＩ １３
［ｐｐｍ１
となった、 ＰＣＤＤｓ７４ ［％］ ＰＣＤＦｓ７９
［％］の除去効率であった。Test (C) - Comparative Example When no adsorbent is added Temperature control chamber Spray water amount 41.5 [1/hll Slaked lime powder spray amount 1.9 [kg/h] Bag filter inlet exhaust gas temperature 140 [tlHCI 13
[ppm1, PCDDs74 [%] PCDFs79
The removal efficiency was [%].
テスト（ｄ）一実施例
吸着剤として活性炭添加の場合
温度調節室 噴霧水量 ４１．５ 〔１／ｈｌ消石灰粉
噴霧量 １．９［ｋｇ／ｌ＋］粉末活性炭噴霧量
０．２［ｋｇ／ｈ〕（本設備のごみ焼却
量は２．５［ｔｏｎ／
ｈ〕
排ガス量は２００００ ［Ｎｍ３／ｈｌであった。パイ
ロット装置の処理排ガス量は１０００ ［Ｎｍ３／ｈ］
だから２．５ｘ １０００／２００００＝ ０．１２５
［ｔｏｎ／ｈ］のごみ焼却分の排ガス量に相当、従っ
て粉末活性炭噴霧量は０．２／ ０．１２５＝ １．６
［：ｋｇ／ゴミｌ ｔｏｎ］になった。Test (d) One Example When activated carbon is added as an adsorbent Temperature control chamber Amount of sprayed water 41.5 [1/hl Amount of slaked lime powder sprayed 1.9 [kg/l+] Amount of powdered activated carbon sprayed 0.2 [kg/h] (The amount of waste incinerated by this equipment was 2.5 [ton/h] and the amount of exhaust gas was 20,000 [Nm3/hl. The amount of waste gas processed by the pilot device was 1,000 [Nm3/h].
So 2.5x 1000/20000 = 0.125
Equivalent to the amount of exhaust gas from garbage incineration of [ton/h], therefore the amount of powdered activated carbon sprayed is 0.2/0.125 = 1.6
[: kg/l ton of garbage].
バグフィルター入口排ガスはテスト１と同様温度１４０
［ｔｌで
ＨＣＩ ８ ［ｐｐｍ１
となった。ＰＣＤＤｓ９７ Ｃ％］ ＰＣＤＦｓ９Ｂ
〔％〕の著しい除去効率であった。The temperature of the exhaust gas at the entrance of the bag filter is 140 as in test 1.
[tl resulted in HCI 8 [ppm1]. PCDDs97 C%] PCDFs9B
It had a remarkable removal efficiency of [%].
テスト（ｅ）一実施例
吸着剤として活性白土添加の場合
温度調節室 噴霧水量 ４１．５ ＣＩ／ｈｌ消石灰粉
噴霧量 １．９［ｋｇ／ｈ］活性白土噴霧量
０．５［ｋｇ／ｈ〕（本設備のごみ焼却
量は２．５ ［ｔｏｎ／
ｈ］
排ガス量は２００００ ［Ｎｍ３／ｈｌであった。パイ
ロット装置の処理排ガス量は１０００ ［Ｎｍ３／ｈ］
だから２．５ｘ １０００／２００００＝ ０．１２５
Ｃｔｏｎ／ｈｌのごみ焼却分の排ガス量に相当、従っ
て活性白土噴霧量は０．５／ ０１１２５＝４ ［ｋ
ｇ／ゴミｌ ｔｏｎｌになった。Test (e) Example When activated clay is added as an adsorbent Temperature control chamber Spray water amount 41.5 CI/hl Slaked lime powder spray amount 1.9 [kg/h] Activated clay spray amount
0.5 [kg/h] (The amount of waste incinerated by this equipment was 2.5 [ton/h] The amount of exhaust gas was 20,000 [Nm3/hl] The amount of waste gas processed by the pilot device was 1,000 [Nm3/h]
So 2.5x 1000/20000 = 0.125
Equivalent to the amount of exhaust gas from waste incineration of Cton/hl, therefore the amount of activated clay spray is 0.5/01125=4 [k
g/garbage became tonl.
バグフィルター入口排ガスはテスト１と同様温度１４０
［ｔｌで
８口１ ８ 〔ρｐｍ）
ＰＣＤＤｓ （４塩化物から８塩化物の合計量）１３
［ｎｇ／Ｎｍ３〕
となった。ＰＣＤＤｓ９６ ［％〕ＰＣＤＦｓ９７ ［
％〕の著しい除去効率であった。The temperature of the exhaust gas at the entrance of the bag filter is 140 as in test 1.
[8 mouths in tl 1 8 [ρpm] PCDDs (Total amount of 4 to 8 chlorides) 13
[ng/Nm3]. PCDDs96 [%] PCDFs97 [
%].
以上実施例にみられる様に、本発明による排ガス処理は
、燃焼排ガス中のダイオキシン等有機塩素化合物の著し
い除去効果があった。As seen in the Examples above, the exhaust gas treatment according to the present invention had a remarkable effect of removing organic chlorine compounds such as dioxins in the combustion exhaust gas.
排ガス温度は低温程有害物の除去効果が良くなるが、１
２０［ｔ］以下になるとＨＣＩの酸性ガスによる腐食が
発生しやすく、好ましくない。The lower the exhaust gas temperature, the better the removal effect of harmful substances, but 1
If it is less than 20 [t], corrosion due to the acidic gas of HCI tends to occur, which is not preferable.
また２００［ｔ１以上の高温になると除去効果が著しく
低下し好ましくない。従って、ハゲフィルター人口温度
は１２０〜２００［ｔｌにするのが好ましい。Furthermore, if the temperature is higher than 200 [t1], the removal effect will be significantly reduced, which is not preferable. Therefore, it is preferable that the bald filter population temperature is 120 to 200 [tl].
上記のように、本発明によれば、ハタフィルター前の煙
道またはバグフィルタ−内に、粉末活性炭または活性白
土をそれぞれ単独または双方噴霧するという極めて簡単
な操作で、除去することが困難であった燃焼排ガス中の
有機塩素化合物を殆ど完全に除去することが出来た。As described above, according to the present invention, it is difficult to remove powdered activated carbon or activated clay by spraying either one or both of them into the flue in front of the grouper filter or into the bag filter. It was possible to almost completely remove organic chlorine compounds from the combustion exhaust gas.
第１図は、本発明の処理方法を示すフローンートである
。
１・・・焼却炉、２・・・廃熱ボイラー又は水噴射室（
ガス冷却室）、３・・・温度調節室（減温室）、４・・
・ハクフィルター、５・・・消石灰貯槽、６・・・消石
灰定量切り出し装置、７・・・消石灰圧送ブロアー ８
・・・粉末活性炭貯槽、９・・・粉末活性炭定量切り出
し装置、１０・・・粉末活性炭圧送ブロアー １１・・
・活性白土貯槽、１２・・・活性白土定量切り出し装置
、１３・・・活性白土圧送ブロアー
腑４図
特許出願人 株式会社 荏原製作所FIG. 1 is a flow route showing the processing method of the present invention. 1... Incinerator, 2... Waste heat boiler or water injection chamber (
gas cooling room), 3...temperature control room (low temperature room), 4...
・Haku filter, 5... Slaked lime storage tank, 6... Slaked lime quantitative cutting device, 7... Slaked lime pressure-feeding blower 8
...Powdered activated carbon storage tank, 9.Powdered activated carbon quantitative cutting device, 10.Powdered activated carbon pressure feeding blower 11..
・Activated clay storage tank, 12... Activated clay quantitative cutting device, 13... Activated clay pressure-feeding blower Figure 4 Patent applicant: Ebara Corporation
Claims (1)
焼排ガスの処理方法において、バグフィルターろ布表面
に粉末活性炭及び／又は活性白土の粉体層を形成させ、
燃焼排ガスをこの粉体層に通すことを特徴とする都市ご
み燃焼排ガスの処理方法。 ２、前記粉体層は、集塵装置の入口ダクト又は集塵装置
内に粉末活性炭及び／又は活性白土を吹き込むことによ
って形成させることを特徴とする請求項１記載の都市ご
み燃焼排ガスの処理方法。 ３、バグフィルターろ布表面に、さらに消石灰の粉体層
を形成させることを特徴とする請求項１又は２記載の都
市ごみ燃焼排ガスの処理方法。 ４、バグフィルター入口の燃焼排ガス温度は、１２０〜
２００℃である請求項１、２又は３記載の都市ごみ燃焼
排ガスの処理方法。 ５、粉末活性炭は、都市ごみ焼却物１トン当たり約０．
５〜１０ｋｇの添加量であり、また、活性白土は、都市
ごみ焼却物１トン当たり約１〜２０ｋｇの添加量である
ことを特徴とする請求項１又は２記載の都市ごみ燃焼排
ガスの処理方法。[Claims] 1. In a method for treating municipal waste combustion exhaust gas using a bag filter as a dust collector, a powder layer of powdered activated carbon and/or activated clay is formed on the surface of the bag filter filter cloth,
A method for treating municipal waste combustion exhaust gas characterized by passing the combustion exhaust gas through this powder layer. 2. The method for treating municipal waste combustion exhaust gas according to claim 1, wherein the powder layer is formed by blowing powdered activated carbon and/or activated clay into an inlet duct of a dust collector or into the dust collector. . 3. The method for treating municipal waste combustion exhaust gas according to claim 1 or 2, further comprising forming a powder layer of slaked lime on the surface of the bag filter cloth. 4. The temperature of the combustion exhaust gas at the inlet of the bag filter is 120~
The method for treating municipal waste combustion exhaust gas according to claim 1, 2 or 3, wherein the temperature is 200°C. 5. Powdered activated carbon has a content of approximately 0.0% per ton of municipal waste incineration.
The method for treating municipal waste combustion exhaust gas according to claim 1 or 2, wherein the amount of activated clay added is about 1 to 20 kg per ton of municipal waste incineration. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2201191A JPH0487624A (en) | 1990-07-31 | 1990-07-31 | Treatment of waste gas generated by combustion of municipal refuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2201191A JPH0487624A (en) | 1990-07-31 | 1990-07-31 | Treatment of waste gas generated by combustion of municipal refuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0487624A true JPH0487624A (en) | 1992-03-19 |
Family
ID=16436860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2201191A Pending JPH0487624A (en) | 1990-07-31 | 1990-07-31 | Treatment of waste gas generated by combustion of municipal refuse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0487624A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569436A (en) * | 1993-06-10 | 1996-10-29 | Beco Engineering Company | Removal of mercury and cadmium and their compounds from incinerator flue gases |
| JPH11347343A (en) * | 1998-05-29 | 1999-12-21 | Walhalla Kalk Entwicklungs & Vertriebs Gmbh | Agent for cleaning exhaust gas |
| US6279491B1 (en) | 1999-10-05 | 2001-08-28 | Ngk Insulators, Ltd. | Method of treating exhaust gas |
| JP2001276606A (en) * | 2000-03-31 | 2001-10-09 | Hitachi Zosen Corp | Adsorbing agent for removing organic harmful substance in exhaust gas and method for removing harmful substance |
| US6511527B2 (en) | 2001-02-06 | 2003-01-28 | Ngk Insulators, Ltd. | Method of treating exhaust gas |
| GB2396315A (en) * | 2002-12-19 | 2004-06-23 | Pro Power Technologies Ltd | Fuel cleaning for gas fired engines |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56126425A (en) * | 1980-03-11 | 1981-10-03 | Kurabo Ind Ltd | Purification method for acidic waste gas |
| JPS6274439A (en) * | 1985-09-30 | 1987-04-06 | Mitsubishi Heavy Ind Ltd | Method for treating exhaust gas |
-
1990
- 1990-07-31 JP JP2201191A patent/JPH0487624A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56126425A (en) * | 1980-03-11 | 1981-10-03 | Kurabo Ind Ltd | Purification method for acidic waste gas |
| JPS6274439A (en) * | 1985-09-30 | 1987-04-06 | Mitsubishi Heavy Ind Ltd | Method for treating exhaust gas |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5569436A (en) * | 1993-06-10 | 1996-10-29 | Beco Engineering Company | Removal of mercury and cadmium and their compounds from incinerator flue gases |
| US5695726A (en) * | 1993-06-10 | 1997-12-09 | Beco Engineering Company | Removal of mercury and cadmium and their compounds from incinerator flue gases |
| JPH11347343A (en) * | 1998-05-29 | 1999-12-21 | Walhalla Kalk Entwicklungs & Vertriebs Gmbh | Agent for cleaning exhaust gas |
| US6279491B1 (en) | 1999-10-05 | 2001-08-28 | Ngk Insulators, Ltd. | Method of treating exhaust gas |
| JP2001276606A (en) * | 2000-03-31 | 2001-10-09 | Hitachi Zosen Corp | Adsorbing agent for removing organic harmful substance in exhaust gas and method for removing harmful substance |
| US6511527B2 (en) | 2001-02-06 | 2003-01-28 | Ngk Insulators, Ltd. | Method of treating exhaust gas |
| GB2396315A (en) * | 2002-12-19 | 2004-06-23 | Pro Power Technologies Ltd | Fuel cleaning for gas fired engines |
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