JPH0210341B2 - - Google Patents
Info
- Publication number
- JPH0210341B2 JPH0210341B2 JP15953181A JP15953181A JPH0210341B2 JP H0210341 B2 JPH0210341 B2 JP H0210341B2 JP 15953181 A JP15953181 A JP 15953181A JP 15953181 A JP15953181 A JP 15953181A JP H0210341 B2 JPH0210341 B2 JP H0210341B2
- Authority
- JP
- Japan
- Prior art keywords
- amount
- waste
- control method
- supply amount
- alkaline
- 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
Links
- 239000000126 substance Substances 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 38
- 239000002699 waste material Substances 0.000 claims description 28
- 238000007669 thermal treatment Methods 0.000 claims description 10
- 239000003513 alkali Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 231100001261 hazardous Toxicity 0.000 description 5
- 238000000197 pyrolysis Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 244000292604 Salvia columbariae Species 0.000 description 1
- 235000012377 Salvia columbariae var. columbariae Nutrition 0.000 description 1
- 235000001498 Salvia hispanica Nutrition 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000014167 chia Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1003—Waste materials
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、廃棄物を熱分解又は燃焼などの熱的
処理を行う場合に発生するNOx、SOx或いは
HClの如き有害成分を除去処理する方法に関する
ものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention is directed to the treatment of NOx, SOx, or
The present invention relates to a method for removing harmful components such as HCl.
上記の如き有害成分の除去に当たつては廃棄物
をガス化した後スクラバーなどにより洗浄する方
法のほかに、処理プロセスへの供給原料（廃棄
物）アルカリ物質を添加する方法が用いられてい
る。
In order to remove the above-mentioned harmful components, in addition to the method of gasifying the waste and then cleaning it with a scrubber, there is also a method of adding alkaline substances to the feedstock (waste) to the treatment process. .
この場合に若し、アルカリ物質添加量が不足す
れば有害成分が排ガスと共に排出されて公害を引
き起こし、又、若しアルカリ物質添加量が過剰な
らば、過剰アルカリ物質が後処理工程に有害であ
り、排ガスに伴つて飛散すれば環境に害を与える
と共にアルカリ物質の無駄な消費が増える。
In this case, if the amount of alkaline material added is insufficient, harmful components will be emitted with the exhaust gas and cause pollution, and if the amount of alkaline material added is excessive, the excess alkali material will be harmful to the post-treatment process. If it is scattered in exhaust gas, it will harm the environment and increase wasteful consumption of alkaline substances.
従つて有害成分発生物質の含有量に対してアル
カリ物質を過不足なく添加することが好ましいの
であるが、廃棄物中の有害成分発生物質の含有量
（以下単に含有量と称す）を時間経過と共に検出
することは極めて困難である。 Therefore, it is preferable to add just the right amount of alkaline substance to the content of hazardous component generating substances. It is extremely difficult to detect.
含有量は、廃棄物の供給量と有害成分発生物質
含有率（以下単に含有率という）との相乗積であ
る。即ち、
含有量＝供給量×含有率 (1)
である。しかして、廃棄物の場合、供給量も、含
有率も何れも変動が大きい。従つて相乗積である
含有量も変動が大きい。 The content is the multiplicative product of the amount of waste supplied and the content rate of hazardous component generating substances (hereinafter simply referred to as content rate). That is, content = supply amount x content rate (1). However, in the case of waste, both the supply amount and the content rate vary greatly. Therefore, the content, which is a multiplicative product, also fluctuates widely.
このうち、供給量はホツパの秤量或いはスクリ
ユーフイーダの回転数などから、各時点において
ほぼ正確に求めることができるが、各時点での含
有率を検出することは極めて困難である。 Of these, the supply amount can be determined almost accurately at each point of time from the weight of the hopper or the rotational speed of the screw feeder, but it is extremely difficult to detect the content rate at each point of time.
従つて、例えば有害成分の排出防止の問題のみ
に関すれば、含有量を検出しようとするよりも、
排ガス中の有害成分の濃度を検出して、その検出
値に応じてアルカリ物質の添加量を調節して有害
成分を無くするようにする（この方法は本発明で
いう「第二制御方法」である）のが、直接的であ
る点において好ましい。 Therefore, for example, if only the problem of preventing the discharge of harmful components is concerned, rather than trying to detect the content,
The concentration of harmful components in the exhaust gas is detected, and the amount of alkaline substances added is adjusted according to the detected value to eliminate the harmful components (this method is referred to as the "second control method" in the present invention). ) is preferable in that it is direct.
しかし、このような第二制御方法のみを用いて
制御した場合には次の如き問題点を生じた。 However, when only the second control method is used for control, the following problems occur.
即ち、 (A) 対応が遅い。 That is, (A) Response is slow.
(B) アルカリ物質の過剰を検出することができな
い。(B) An excess of alkaline substances cannot be detected.
過剰の場合には、
(a) 未反応アルカリ物質が外界に飛散して環境
を害する。 In case of excess, (a) unreacted alkaline substances are scattered into the outside world and harm the environment;
(b) アルカリ物質が無駄に消費される。 (b) Alkaline substances are wasted.
なる問題点を生ずる。 This causes a problem.
などである。etc.
本発明は、従来の方法の上記の如き問題点を解
決し、廃棄物の供給量或いは組成が変動しても有
害成分の排出を許容値内に抑え、アルカリ物質の
過剰添加を概ね防ぎ、かつ、簡単で信頼性の高い
制御機構を得ることができる廃棄物の熱的処理に
おける有害成分の処理方法を提供することを目的
とするものである。 The present invention solves the above-mentioned problems of the conventional method, suppresses the discharge of harmful components within an allowable value even if the supply amount or composition of waste varies, largely prevents excessive addition of alkaline substances, and The object of the present invention is to provide a method for the treatment of harmful components in the thermal treatment of waste, which allows a simple and reliable control mechanism to be obtained.
上記の目的を達成するために発明者らは研究を
重ね、その折に得た知見に基づき本発明がなされ
た。
In order to achieve the above object, the inventors conducted repeated research, and based on the knowledge obtained at that time, the present invention was made.
即ち、廃棄物においては、供給量の変動が大な
るほかに、組成の変動が大きい。 That is, in the case of waste, not only the supply amount fluctuates greatly, but also the composition thereof fluctuates greatly.
一方、第一制御方法は供給量の変動に対しては
直ちに、かつ正確に対応できるが、組成の変動に
対しては対応していない。従つて(1)式に示す如き
項のうち含有率の項に対応していないので、含有
量に対しアルカリ物質の過不足を生ずる場合があ
る。 On the other hand, the first control method can immediately and accurately respond to changes in the supply amount, but cannot respond to changes in the composition. Therefore, among the terms shown in equation (1), the term does not correspond to the content rate, so there may be an excess or deficiency of the alkaline substance relative to the content.
例えば、含有率が大になると、アルカリ物質は
相対的に不足し、SOxなどの有害成分が排出され
る。しかし、過剰アルカリ物質の飛散やアルカリ
物質の浪費は生じない。 For example, when the content increases, there is a relative shortage of alkaline substances, and harmful components such as SOx are emitted. However, scattering of excess alkaline substances and waste of alkaline substances do not occur.
また、含有率が小になると、アルカリ物質は相
対的に過剰となり、SOxなどの有害成分は排出さ
れない。しかし、過剰アルカリ物質は外界に飛散
し、またアルカリ物質の浪費を伴う。 Furthermore, when the content is small, alkaline substances become relatively excessive, and harmful components such as SOx are not emitted. However, excess alkaline substances are scattered to the outside world, and the alkaline substances are wasted.
このように第一制御方法においては、含有率の
変動に基づくアルカリ物質添加量の誤差を生ずる
場合があるが、しかしながら(1)式における要素の
うち供給量の変動に関する誤差は除くことができ
るので、含有量の変動に対して概ね対応すること
ができる。即ち、アルカリ物質を速応性を以て概
ね過不足なく添加することができる。 In this way, in the first control method, errors may occur in the amount of alkaline material added due to fluctuations in the content.However, among the elements in equation (1), errors related to fluctuations in the supply amount can be eliminated. , it is possible to generally respond to changes in content. That is, the alkaline substance can be added quickly and in just the right amount.
前述の如く、第二制御方法のみであると、アル
カリ物質の過剰を防ぐことはできず、またアルカ
リ物質の不足（有害成形排出）に対しては、その
防止策には可なりの時間遅れを生じてしまう。そ
こで常時は第一制御方法を用いれば、速応性を以
てアルカリ物質の過剰及び不足の何れをも概ね防
ぐことができる。 As mentioned above, if only the second control method is used, it will not be possible to prevent an excess of alkaline substances, and in the case of a shortage of alkaline substances (hazardous molding discharge), it will take a considerable amount of time to take preventive measures. It will happen. Therefore, if the first control method is always used, both excess and deficiency of alkaline substances can be generally prevented with rapid response.
しかして、特にアルカリ物質の不足により生ず
る有害物質の排出については、長い時間排出が行
われると環境に重大な悪影響を及ぼすので、有害
成分排出濃度が許容値を超えたら第二制御方法を
適用して、遅れ時間を伴うとはいうもののその遅
れ時間以上には有害成分の排出が続行しないよう
にする。 However, especially regarding the discharge of harmful substances caused by a lack of alkaline substances, if discharge continues for a long time, it will have a serious negative impact on the environment, so if the discharge concentration of harmful substances exceeds the permissible value, the second control method should be applied. Although this involves a lag time, the discharge of harmful components should not continue beyond the lag time.
ただ第一制御方法を用いても、アルカリ物質の
過剰を正確に防止することはできない。これを行
うためには含有量を正確に検出せねばならず複雑
な検出、制御装置を必要とする。しかし、第一制
御方法を用いれば、アルカリ物質の過剰を概ね防
止することができ、しかも装置は極めて簡単なも
のとなる。 However, even if the first control method is used, it is not possible to accurately prevent excess alkaline substances. To do this, the content must be detected accurately and requires complex detection and control equipment. However, if the first control method is used, excess of alkaline substances can generally be prevented, and the apparatus becomes extremely simple.
以上の如く、発明者らは、
「有害成分排出防止に当り、第二制御方法は直
接的な意味で好ましいが、
(A) 対応が遅い。 As mentioned above, the inventors believe that ``the second control method is preferable in a direct sense in preventing the discharge of harmful components, but (A) it is slow to respond.
(B) アルカリ物質の過剰を防げない。(B) Excess of alkaline substances cannot be prevented.
なる欠点があるので、第二制御方法は非常用と
し、常時は、
(i) 対応が速い。Therefore, the second control method is for emergency use, and under normal conditions: (i) quick response;
(ii) アルカリ物質の過剰を概ね防げる。 (ii) Excess of alkaline substances is generally prevented.
(iii) アルカリ物質の不足（有害成分排出）を概
ね防げる。 (iii) Lack of alkaline substances (emission of harmful components) can be largely prevented.
(iv) 検出・制御機構の構造が極めて簡単とな
る。 (iv) The structure of the detection/control mechanism becomes extremely simple.
という特長を有する第一制御方法を適用する。」
なる技術的思窓に想到し、本発明がなされた。The first control method having the following features is applied. ”
The present invention was created based on this technical idea.
本発明は、前述の従来の方法の問題点を解決す
る手段として、廃棄物の熱的処理に際してアルカ
リ物質を予め添加して有害成分を除去する処理方
法において、熱的処理工程よりも前の工程におけ
る廃棄物の供給量に応じてアルカリ物質の供給量
を制御する第一制御方法と、前記熱的処理工程よ
りも後の工程における排ガス中のSOx、NOx及
びHClのうち少なくとも一つの成分の濃度に応じ
てアルカリ物質の供給量を制御する第二制御方法
とを用いてアルカリ物質の供給量を制御し、前記
第二制御方法における濃度が特異変動を示した場
合に、該第二制御方法を、前記第一制御方法より
優先せしめてアルカリ物質の供給量制御を行うこ
とを特徴とする廃棄物の熱的処理における有害成
分処理方法を提供せんとするものである。 As a means of solving the problems of the conventional methods described above, the present invention is directed to a treatment method in which an alkaline substance is added in advance to remove harmful components during the thermal treatment of waste, and the process is performed before the thermal treatment step. a first control method of controlling the supply amount of an alkaline substance according to the supply amount of waste in the step; and the concentration of at least one component among SOx, NOx and HCl in the exhaust gas in a step subsequent to the thermal treatment step. controlling the supply amount of the alkaline substance using a second control method that controls the supply amount of the alkaline substance according to the second control method; , it is an object of the present invention to provide a method for treating harmful components in thermal treatment of waste, characterized in that the supply amount of an alkaline substance is controlled with priority over the first control method.
本発明を、二塔循環式熱分解装置を用いた実施
例につき図面を用いて説明する。熱的処理装置と
しての熱分解装置は、吸熱反応が生じる流動層熱
分解塔１と、これから生成するチヤー、油、ター
ルの燃焼反応を行わしめる流動層燃焼塔２からな
り、両塔間を砂などの流動熱媒体が循環してい
る。熱分解塔１には生成ガスの一部が再循環して
流動化ガスとして供給され、500〜900℃の流動層
が形成されている。廃棄物は、コンベヤ３により
サイロ４から供給ホツパ５に送られ、ごみ供給機
６により、供給量調整が行われ、かつガスシール
を行ないながら熱分解流動層８に投入され熱分解
される。
The present invention will be explained with reference to the drawings regarding an example using a two-column circulation type thermal decomposition apparatus. The pyrolysis equipment as a thermal treatment equipment consists of a fluidized bed pyrolysis tower 1 in which an endothermic reaction occurs and a fluidized bed combustion tower 2 in which the combustion reaction of the coal, oil, and tar produced from this takes place. A fluid heat medium such as is circulated. A part of the generated gas is recycled and supplied to the pyrolysis tower 1 as a fluidizing gas, forming a fluidized bed at a temperature of 500 to 900°C. The waste is sent from the silo 4 to the supply hopper 5 by the conveyor 3, the supply amount is adjusted by the waste feeder 6, and the waste is thrown into the pyrolysis fluidized bed 8 to be thermally decomposed while gas sealing is performed.
生成ガスは、チヤー捕集装置９、ガス洗浄装置
１０にて精製されてガスホルダー１１に貯蔵され
る。 The generated gas is purified by a chia collection device 9 and a gas cleaning device 10 and stored in a gas holder 11.
一方、熱分解吸熱反応によつて降温した流動熱
媒体は、同時に生成するチヤー分を伴つて燃焼塔
揚送部７に送られる。ここでチヤー分は流動熱媒
体を揚送する空気と反応して燃焼し、更に燃焼塔
流動層１２において完全燃焼し、流動熱媒体を加
熱し昇温せしめる。 On the other hand, the fluidized heat medium whose temperature has been lowered by the endothermic thermal decomposition reaction is sent to the combustion tower pumping section 7 together with the char produced at the same time. Here, the char reacts with the air that lifts the fluidized heat carrier and is combusted, and is then completely combusted in the combustion tower fluidized bed 12, thereby heating the fluidized heat carrier and raising its temperature.
燃焼塔２から排出された燃焼排ガスは、異物除
去機１３にてアルミニウムやダストなどを除去
し、さらに集塵器１４で除塵後煙突１５から大気
に放出される。 The combustion exhaust gas discharged from the combustion tower 2 is sent to a foreign matter remover 13 to remove aluminum, dust, etc., and further removed by a dust collector 14 before being released into the atmosphere from a chimney 15.
１６はアルカリ物質添加装置であり廃棄物の供
給量に応じてアルカリ物質を添加する。アルカリ
物質としては、Ca化合物、例えばCaO、Ca
（OH）2、CaCo3、Mg化合物、例えばMgO、Mg
（OH）2、MgCO3が一般的であるが、アルカリ物
質であれば何でもよく、単味又は２種類以上の物
質が混合される。 Reference numeral 16 denotes an alkaline substance addition device which adds an alkaline substance according to the amount of waste supplied. Alkaline substances include Ca compounds such as CaO, Ca
(OH) 2 , CaCo 3 , Mg compounds such as MgO, Mg
(OH) 2 and MgCO 3 are common, but any alkaline substance may be used, either alone or in a mixture of two or more substances.
アルカリ物質の添加量は廃棄物の供給量に応じ
て定められる。正確には廃棄物の中の、有害成分
発生源中の有害成分当量に関係するが、例えばCl
の量を以て有害物質の指標とすることができる。
この場合は、アルカリ物質量を、例えば
アルカリ物質量／Cl量＝0.5〜10（当量比）
とする。 The amount of alkaline substance added is determined depending on the amount of waste supplied. To be precise, it is related to the equivalent amount of hazardous components in the source of hazardous components in the waste, for example, Cl
can be used as an indicator of harmful substances.
In this case, the amount of alkali material is set to, for example, amount of alkali material/amount of Cl=0.5 to 10 (equivalent ratio).
Cl量は、通常廃棄物の量に対し一定なので、廃
棄物の量を測定することによつて推定することが
できる。廃棄物の供給を行うごみ供給機６はスク
リユー型供給機又はピストン型供給機などが用い
られるが、それぞれスクリユーの回転数又はピス
トンのストローク回転を測定器１７に入力せしめ
て供給量を求めることができる。この測定値は対
応する出力信号に変えられ、演算器１８に送ら
れ、演算器１８では適正添加量を算出して、算出
値に対応する出力信号をアルカリ物質添加量調節
計２１を含むアルカリ物質添加装置１６に送り、
アルカリ物質の添加量を調節する。 Since the amount of Cl is usually constant with respect to the amount of waste, it can be estimated by measuring the amount of waste. A screw type feeder or a piston type feeder is used as the waste feeder 6 that supplies waste, but the amount of feed can be determined by inputting the rotation speed of the screw or the stroke rotation of the piston into the measuring device 17. can. This measured value is converted into a corresponding output signal and sent to the calculator 18. The calculator 18 calculates the appropriate addition amount, and outputs the output signal corresponding to the calculated value to the alkaline material including the alkaline material addition amount controller 21. Send it to the addition device 16,
Adjust the amount of alkaline substance added.
以上の如く、測定器１７、演算器１８、添加量
調節計２１による制御回路を含み、廃棄物の供給
量に応じてアルカリ物質の供給量を制御する装置
を第一制御機構と称し、この機構で行われる供給
量制御方法を第一制御方法と称する。 As described above, the device that includes the control circuit including the measuring device 17, the computing device 18, and the addition amount controller 21 and that controls the amount of alkaline material supplied according to the amount of waste supplied is called the first control mechanism. The supply amount control method performed in step 1 is referred to as the first control method.
この第一制御機構、方法の他に次に示す、排ガ
ス中のSOx、NOx及びHClのうちなくとも一つ
の成分の濃度の特異変動に応じてアルカリ物質の
供給量を制御する第二制御装置が備えられ第二制
御方法が行われる。 In addition to this first control mechanism and method, there is a second control device that controls the supply amount of alkaline substances in response to specific fluctuations in the concentration of at least one of SOx, NOx, and HCl in the exhaust gas, as shown below. and a second control method is performed.
即ち、集塵器１４を出た燃焼排ガス中NOx、
SOx及びHClのうちすくなくとも一つの成分の濃
度を、例えばNOx分析計１９、HCl分析計２０
により分析し（必要あればSOx分析計も用いる）、
それぞれの分析値に対応する出力が演算器１８に
送られる。演算器１８においては、これら成分の
うち少なくとも一つの成分が、ごみ組成変動、供
給量の変動などにより予め設定した許容量を超え
て特異変動値を示したときに、内蔵する選択手段
により、第一制御機構における測定器１７からの
信号より優先して、第二制御機構における特異変
動値による信号を優先せしめ、演算器１８にて演
算を行い、必要添加量の信号を添加量調節計２１
に送り添加量を制御する。 That is, NOx in the combustion exhaust gas exiting the precipitator 14,
For example, NOx analyzer 19, HCl analyzer 20 can measure the concentration of at least one component of SOx and HCl.
(If necessary, use a SOx analyzer)
Outputs corresponding to each analysis value are sent to the calculator 18. In the computing unit 18, when at least one of these components exhibits a singular fluctuation value exceeding a preset allowable amount due to fluctuations in waste composition, fluctuations in supply amount, etc., the built-in selection means selects the Priority is given to the signal from the measuring device 17 in the first control mechanism, and the signal based on the singular fluctuation value in the second control mechanism is calculated, and the signal of the required addition amount is sent to the addition amount controller 2.
Control the amount of feed added.
本発明により、次の如き優れた利点を有する有
害成分処理方法を提供することができ、実用上極
めて大なる効果を有する。 According to the present invention, it is possible to provide a method for treating harmful components that has the following excellent advantages, and has extremely great practical effects.
(1) 廃棄物の供給量及びその組成が変化しても所
定時間後は排出有害成分量を許容濃度以下とす
ることができる。(1) Even if the amount of waste supplied and its composition change, the amount of harmful components discharged can be kept below the permissible concentration after a specified period of time.
(2) 速応性を以てアルカリ物質不足（有害成分排
出）及びアルカリ物質過剰（飛散、浪費）を概
ね防ぐことができる。(2) With its rapid response, it is possible to largely prevent alkali material shortages (emission of harmful components) and alkali material excesses (scattering, waste).
(3) 制御機構が極めて簡単となり、操業、保守も
容易となる。(3) The control mechanism is extremely simple, making operation and maintenance easier.
図面は本発明の実施例のフロー図である。
１……熱分解塔、２……燃焼塔、３……コンベ
ヤ、４……サイロ、５……供給ホツパ、６……ご
み供給機、７……揚送部、８……流動層、９……
チヤー捕集装置、１０……ガス洗浄装置、１１…
…ガスホルダー、１２……流動層、１３……異物
除去機、１４……集塵器、１５……煙突、１６…
…添加装置、１７……測定器、１８……演算器、
１９……NOx分析計、２０……HCl分析計、２
１……添加量調節計。
The drawing is a flow diagram of an embodiment of the invention. 1... Pyrolysis tower, 2... Combustion tower, 3... Conveyor, 4... Silo, 5... Supply hopper, 6... Refuse feeder, 7... Lifting section, 8... Fluidized bed, 9 ……
Chire collection device, 10... Gas cleaning device, 11...
... Gas holder, 12 ... Fluidized bed, 13 ... Foreign matter remover, 14 ... Dust collector, 15 ... Chimney, 16 ...
... Addition device, 17 ... Measuring device, 18 ... Calculator,
19...NOx analyzer, 20...HCl analyzer, 2
1... Addition amount controller.
Claims (1)
め添加して有害成分を除去する処理方法におい
て、 熱的処理工程よりも前の工程における廃棄物の
供給量に応じてアルカリ物質の供給量を制御する
第一制御方法と、前記熱的処理工程よりも後の工
程における排ガス中のSOx、NOx及びHClのう
ち少なくとも一つの成分の濃度に応じてアルカリ
物質の供給量を制御する第二制御方法とを用いて
アルカリ物質の供給量を制御し、前記第二制御方
法における濃度が特異変動を示した場合に、該第
二制御方法を、前記第一制御方法より優先せしめ
てアルカリ物質の供給量制御を行うことを特徴と
する廃棄物の熱的処理における有害成分処理方
法。[Claims] 1. In a treatment method in which harmful components are removed by adding an alkaline substance in advance during thermal treatment of waste, the alkaline substance is added in accordance with the amount of waste supplied in a step before the thermal treatment step. a first control method of controlling the supply amount of the alkaline substance, and controlling the supply amount of the alkaline substance according to the concentration of at least one component among SOx, NOx, and HCl in the exhaust gas in a step after the thermal treatment step. A second control method is used to control the supply amount of the alkali substance, and when the concentration in the second control method shows a peculiar fluctuation, the second control method is given priority over the first control method to control the alkali substance supply amount. A method for treating harmful components in thermal treatment of waste, characterized by controlling the supply amount of substances.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15953181A JPS5861181A (en) | 1981-10-08 | 1981-10-08 | Method and apparatus for treating harmful component in the thermal treatment of waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15953181A JPS5861181A (en) | 1981-10-08 | 1981-10-08 | Method and apparatus for treating harmful component in the thermal treatment of waste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5861181A JPS5861181A (en) | 1983-04-12 |
| JPH0210341B2 true JPH0210341B2 (en) | 1990-03-07 |
Family
ID=15695797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15953181A Granted JPS5861181A (en) | 1981-10-08 | 1981-10-08 | Method and apparatus for treating harmful component in the thermal treatment of waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5861181A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3337973C3 (en) * | 1983-10-19 | 1990-11-15 | Deutsche Kommunal Anlagen | METHOD AND DEVICES FOR THE PYROLYTIC TREATMENT OF WASTE MATERIALS WITH THE ADDITION OF BASICALLY ACTIVE SUBSTANCES |
| JPS60181539U (en) * | 1984-05-14 | 1985-12-02 | バブコツク日立株式会社 | Sewage sludge incinerator |
| DE3806732A1 (en) * | 1988-03-02 | 1989-11-09 | Andersen Kjeld | METHOD FOR GASIFICATION OF ORGANIC MATERIAL IN SYNTHESEGAS OR GASOFMY OR LIQUID HYDROCARBONS OR FOR REMOVING ORGANIC MATERIAL IN WASTEWATER |
| JP2769966B2 (en) * | 1993-08-31 | 1998-06-25 | 川崎重工業株式会社 | 2-furnace type fluidized bed incinerator |
| EP0890789B1 (en) | 1996-12-30 | 2003-02-12 | Honda Giken Kogyo Kabushiki Kaisha | Combustion equipment with flue gas cleaning plant |
| US8444721B2 (en) | 2008-06-26 | 2013-05-21 | Re Community Energy, Llc | Engineered fuel feed stock |
| WO2009158540A1 (en) | 2008-06-26 | 2009-12-30 | Casella Waste Systems, Inc. | Engineered fuel feed stock |
| JP2013515136A (en) | 2009-12-22 | 2013-05-02 | リ コミュニティー エナジー，エルエルシー． | Adsorbent-containing artificial fuel feedstock |
| IT1400519B1 (en) * | 2010-06-09 | 2013-06-11 | Ghirarduzzi S R L | PROCEDURE AND PLANT FOR THE FILLING OF GASEOUS POLLUTANTS OF THE SOV-COV-COT TYPE. |
| DK2807238T3 (en) | 2012-01-26 | 2018-10-29 | Accordant Energy Llc | REDUCING HARMFUL COMBUSTION EMISSIONS USING FUEL MATERIALS CONTAINING SORBENT |
| JP2013189510A (en) * | 2012-03-13 | 2013-09-26 | Ihi Corp | Circulation type gasification furnace |
-
1981
- 1981-10-08 JP JP15953181A patent/JPS5861181A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5861181A (en) | 1983-04-12 |
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