JP2006068646A - Transporting method for exhaust-gas treatment agent to exhaust-gas treatment tank - Google Patents

Transporting method for exhaust-gas treatment agent to exhaust-gas treatment tank Download PDF

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JP2006068646A
JP2006068646A JP2004255857A JP2004255857A JP2006068646A JP 2006068646 A JP2006068646 A JP 2006068646A JP 2004255857 A JP2004255857 A JP 2004255857A JP 2004255857 A JP2004255857 A JP 2004255857A JP 2006068646 A JP2006068646 A JP 2006068646A
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gas treatment
exhaust gas
exhaust
treatment agent
tanks
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JP4634763B2 (en
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Kenji Sato
健至 佐藤
Iwao Fukuoka
巌 福岡
Kenji Ishida
憲二 石田
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Navitas Co Ltd
Nippon Steel Corp
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Nippon Steel Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To attain a high-level stabilization of an exhaust-gas treatment capacity and an exhaust-gas treatment operation by controlling a difference in storage level, generating between exhaust-gas treatment tanks, of an exhaust-gas treatment agent, and also keeping its difference in the range of controlling level. <P>SOLUTION: A plurality of exhaust-gas treatment tanks 6 wherein the exhaust-gas treatment agent, received in the tanks, is discharged from lower parts of the tanks after being contacted with an exhaust gas while the treatment agent is moved from upper parts to the lower parts of tanks, a regenerating tower 8 for regenerating the exhaust-gas treatment agent, and a conveyer 10 for transporting the exhaust-gas treatment agent, cut off from the regenerating tower 8, to each exhaust-gas treatment tank 6, are installed. The exhaust-gas treatment agent, which is transported by the conveyer 10 to each exhaust-gas treatment tank 6 in order and also to all the exhaust-gas treatment tanks 6 in a cycle time determined in advance, is supplied. A cutting-off amount of the exhaust-gas treatment agent from the regenerating tower 8 is arranged so that a level of the exhaust-gas treatment agent of the exhaust-gas treatment tank 6 is a controlling value determined in advance, a transporting rate of the conveyer 10 is arranged correspondingly to the cutting-off amount of the exhaust-gas treatment agent, and a transporting amount per hour is controlled to be equivalent or near to the admittable maximum limit of a transporting capacity of the conveyer 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、内部に収容された排ガス処理剤を上から下に移動させながら排ガスと接触させて底部から排出させる複数の排ガス処理槽へ排ガス処理剤を搬送する方法に関する。 The present invention relates to a method of transporting an exhaust gas treatment agent to a plurality of exhaust gas treatment tanks that are brought into contact with exhaust gas while being discharged from the bottom while moving the exhaust gas treatment agent contained therein from the bottom.

従来から、鉄鉱石を焼結する焼結機から排出される排ガスは粉塵、ＳＯｘ、ＮＯｘ等を含有しているため、これを除去した後に大気放散されている。即ち、図４に示すように、焼結機１から排出した焼結排ガスはブロワー３により吸引されて、乾式集塵機２に流入して粉塵が除去された後、排ガス処理装置４に流入してＳＯｘ、ＮＯｘ等が除去され、煙突５から大気放散されている。 Conventionally, exhaust gas discharged from a sintering machine that sinters iron ore contains dust, SOx, NOx, and the like, and thus is exhausted to the atmosphere after removing it. That is, as shown in FIG. 4, the sintered exhaust gas discharged from the sintering machine 1 is sucked by the blower 3 and flows into the dry dust collector 2 to remove dust, and then flows into the exhaust gas treatment device 4 and enters SOx. , NOx and the like are removed and the chimney 5 emits air.

そして、前記排ガス処理装置４としては、図３に示すように、内部に収容された排ガス処理剤（例えば、炭素質吸着剤）を上から下に移動させながら、例えば水平方向から排ガスを流入させ、排ガス処理剤と接触させて排ガス中のＳＯｘ、ＮＯｘを吸着（正確にはＮＯｘは分解）した後に底部に設けた切出機６ａにより切出して排出する排ガス処理槽６を複数設けた吸着塔７と、各排ガス処理槽６の底部から排出した排ガス処理剤を加熱し、吸着したＳＯｘを離脱させて再生する再生塔８と、排ガス処理槽６から排出した排ガス処理剤を再生塔８に搬送するコンベア（ベルトコンベア又はバケットコンベア）９と、再生塔８で再生した排ガス処理剤を底部に設けた切出機８ａにより切出して再び前記排ガス処理槽６に搬送するコンベア（ベルトコンベア又はバケットコンベア）１０を有する排ガス処理装置が提案されている（例えば、特許文献１参照）。 As shown in FIG. 3, the exhaust gas treatment device 4 allows the exhaust gas to flow in from the horizontal direction, for example, while moving the exhaust gas treatment agent (for example, carbonaceous adsorbent) contained in the exhaust gas from the top to the bottom. An adsorption tower 7 provided with a plurality of exhaust gas treatment tanks 6 which are brought into contact with an exhaust gas treatment agent and adsorb SOx and NOx in the exhaust gas (precisely, NOx is decomposed) and then cut out and discharged by a cutting machine 6a provided at the bottom. Then, the exhaust gas treatment agent discharged from the bottom of each exhaust gas treatment tank 6 is heated, and the adsorbed SOx is released and regenerated, and the exhaust gas treatment agent discharged from the exhaust gas treatment tank 6 is conveyed to the regeneration tower 8. A conveyor (belt conveyor or bucket conveyor) 9 and an exhaust gas treatment agent regenerated in the regeneration tower 8 is cut out by a cutting machine 8a provided at the bottom and conveyed to the exhaust gas treatment tank 6 again. Exhaust gas treatment apparatus has been proposed which has a conveyor or bucket conveyor) 10 (for example, see Patent Document 1).

そして、前記排ガス処理槽６への排ガス処理剤の装入は、全ての排ガス処理槽６に対して、予め設定された投入サイクル時間で、且つ、順番に行っており、前記再生塔８で加熱再生した排ガス処理剤を前記排ガス処理槽６に搬送するコンベア１０は変化する切出機８ａからの排ガス処理剤を常に一定速度で搬送するものであった。
尚、１１は、所定粒度以下に小さくなった排ガス処理剤を系外に排出するためのスクリーンである。 The exhaust gas treatment agent 6 is charged into all of the exhaust gas treatment tanks 6 in order at a preset charging cycle time and heated in the regeneration tower 8. The conveyor 10 for transporting the regenerated exhaust gas treatment agent to the exhaust gas treatment tank 6 always conveys the exhaust gas treatment agent from the changing cutter 8a at a constant speed.
In addition, 11 is a screen for discharging | emitting the waste gas processing agent reduced to below the predetermined particle size out of the system.

特開２００２−５８９６２号公報JP 2002-58962 A

しかしながら、特許文献１に記載された排ガス処理装置４の吸着塔７に設けられた各排ガス処理槽６では、排ガス中のＳＯｘ、ＮＯｘ等を吸着した排ガス処理剤を底部から排出する切出機（例えば、フィーダー）６ａの機械的特性がそれぞれ異なっており、各排ガス処理槽６の排ガス処理剤の貯蔵レベルが異なる。その上、排ガス処理槽６内での排ガス処理剤の流動状態に応じては棚吊りが発生したり、解消したりして、貯蔵レベルが大きく変動する場合がある。このため、各排ガス処理槽６に前記のような方法で排ガス処理剤を搬送すると、各排ガス処理槽６の排ガス処理剤の貯蔵レベルが大きく異なる場合が発生して、排ガス処理剤の貯蔵レベルが低くなった排ガス処理槽６では、極端な場合には排ガスの吹き抜け等の変流が発生するという問題が生じていた。その結果、各排ガス処理槽６間の吸着性能が変動し、安定した排ガス処理操業を行うことが困難になる問題点を有していた。 However, in each of the exhaust gas treatment tanks 6 provided in the adsorption tower 7 of the exhaust gas treatment device 4 described in Patent Document 1, a cutting machine that discharges the exhaust gas treatment agent adsorbing SOx, NOx, etc. in the exhaust gas from the bottom ( For example, the mechanical properties of the feeders 6a are different, and the storage levels of the exhaust gas treatment agents in the exhaust gas treatment tanks 6 are different. In addition, depending on the flow state of the exhaust gas treatment agent in the exhaust gas treatment tank 6, shelves may be generated or eliminated, and the storage level may vary greatly. For this reason, when the exhaust gas treatment agent is transported to each exhaust gas treatment tank 6 by the method as described above, the storage level of the exhaust gas treatment agent in each exhaust gas treatment tank 6 may be greatly different, and the storage level of the exhaust gas treatment agent is In the exhaust gas treatment tank 6 that has been lowered, there has been a problem that in an extreme case, a current flow such as blow-off of the exhaust gas occurs. As a result, the adsorption performance between the exhaust gas treatment tanks 6 fluctuates, which makes it difficult to perform a stable exhaust gas treatment operation.

本発明は、上記問題を解決するもので、各排ガス処理槽間に生じる排ガス処理剤の貯蔵レベルの差を抑制すると共に管理レベル範囲内に維持し、排ガス処理能力と排ガス処理操業の高位安定化を図ることが可能な排ガス処理槽への排ガス処理剤の供給方法を提供することを課題とする。 The present invention solves the above-mentioned problem, suppresses the difference in the storage level of the exhaust gas treatment agent generated between the exhaust gas treatment tanks and maintains it within the control level range, and stabilizes the exhaust gas treatment capacity and the exhaust gas treatment operation at a high level. It is an object of the present invention to provide a method for supplying an exhaust gas treatment agent to an exhaust gas treatment tank capable of achieving the above.

本発明は、上記課題を解決するためになされたもので、その手段（１）は、内部に収容された排ガス処理剤を上方から下方に移動させながら排ガスと接触させた後に下部から排出させる複数の排ガス処理槽と、前記排ガス処理剤を再生する再生塔と、該再生塔から切出した排ガス処理剤を前記各排ガス処理槽に搬送するコンベアとを設け、前記各排ガス処理槽に順番に、且つ、予め設定したサイクル時間で前記全排ガス処理槽に前記コンベアで搬送した排ガス処理剤を供給する方法において、前記排ガス処理槽の排ガス処理剤レベルが予め設定した管理値になるように前記再生塔からの排ガス処理剤切出量を調整し、更に、この排ガス処理剤切出量に応じて前記コンベアの搬送速度を調整して、前記コンベアにおける単位時間当たりの搬送量が、該コンベアの搬送能力の許容最大限又はそれに近くなるようにした排ガス処理槽への排ガス処理剤の搬送方法である。 The present invention has been made to solve the above problems, and the means (1) includes a plurality of exhaust gas treating agents accommodated therein, which are discharged from the lower part after being brought into contact with the exhaust gas while being moved downward from above. An exhaust gas treatment tank, a regeneration tower that regenerates the exhaust gas treatment agent, and a conveyor that conveys the exhaust gas treatment agent cut out from the regeneration tower to each exhaust gas treatment tank, and in order to each exhaust gas treatment tank, and In the method of supplying the exhaust gas treatment agent conveyed by the conveyor to all the exhaust gas treatment tanks in a preset cycle time, from the regeneration tower so that the exhaust gas treatment agent level of the exhaust gas treatment tank becomes a preset control value. The amount of exhaust gas treatment agent cut out is adjusted, and further, the conveyance speed of the conveyor is adjusted according to the amount of exhaust gas treatment agent cut out, and the amount of conveyance per unit time in the conveyor A transfer method of an exhaust gas treating agent to the exhaust gas treatment tank which is as close tolerance maximally or in the conveying capacity of the conveyor.

更に、手段２は、前記コンベアの搬送速度の調整は、前記排ガス処理剤の切出量が多い場合には速くし、前記排ガス処理剤の切出量が少ない場合には遅くするようにした手段１記載の排ガス処理槽への排ガス処理剤の搬送方法である。 Further, the means 2 is a means in which the adjustment of the conveying speed of the conveyor is made faster when the cut amount of the exhaust gas treating agent is large, and is made slower when the cut amount of the exhaust gas treating agent is small. 1 is a method for conveying an exhaust gas treatment agent to an exhaust gas treatment tank according to 1.

また、手段３は、前記排ガス処理槽の排ガス処理剤レベルは、前記全排ガス処理槽の平均レベルである手段１又は２記載の排ガス処理槽への排ガス処理剤の搬送方法である。 Means 3 is a method for transporting an exhaust gas treatment agent to the exhaust gas treatment tank according to means 1 or 2, wherein an exhaust gas treatment agent level of the exhaust gas treatment tank is an average level of all the exhaust gas treatment tanks.

本発明は、各排ガス処理槽に排ガス処理剤を順番に、且つ、設定したサイクル時間で供給する際において、各排ガス処理槽間で大きなレベル差の発生を防止すると共に、常に管理レベル内に維持することが可能になることから、各排ガス処理槽における排ガス処理能力を良好に維持して、排ガス処理操業の高位安定化を図ることが可能になり、この分野での効果は大きい。 The present invention prevents the occurrence of a large level difference between the exhaust gas treatment tanks and always keeps them within the control level when supplying the exhaust gas treatment agents to the exhaust gas treatment tanks in order and in the set cycle time. Therefore, the exhaust gas treatment capacity in each exhaust gas treatment tank can be maintained satisfactorily, and the exhaust gas treatment operation can be highly stabilized, which has a great effect in this field.

本発明者らは、上記課題を解決するため、種々検討した結果、これは吸着塔７と再生塔８が設備レイアウト上から５０〜１００ｍ程度離れて設置せざる得ない事が原因である事が判明した。
即ち、吸着塔７の内、例えば、排ガス処理剤を供給しようとした排ガス処理槽６又は、数個前迄の排ガス処理槽６の貯蔵レベルが急激に低下した場合、その排ガス処理槽６に設けたレベル計がそれを検知して、その検知情報により再生塔８からの排ガス処理剤切出量を増加したとしても、その増加した排ガス処理剤が対象の排ガス処理槽６に到達するのに５〜１０分程度は掛かり、その時間遅れのために、増量された部分が排ガス処理槽６へ到着する頃には、対象の排ガス処理槽６への投入時間は終了し、他の排ガス処理槽６へ投入が行なわれていることから、１回のサイクルでは対象となる排ガス処理槽６のレベル回復は出来ず、次回以降、数サイクルの投入でレベルが回復する事になり、レベルの回復に時間を要すものである。 As a result of various studies conducted by the present inventors to solve the above-mentioned problems, this is because the adsorption tower 7 and the regeneration tower 8 must be installed at a distance of about 50 to 100 m from the equipment layout. found.
That is, in the case where the storage level of the exhaust gas treatment tank 6 to which the exhaust gas treatment agent is to be supplied or the exhaust gas treatment tank 6 up to several times in the adsorption tower 7 is suddenly lowered, the exhaust gas treatment tank 6 is provided. Even if the level meter detects this and increases the amount of the exhaust gas treatment agent cut out from the regeneration tower 8 by the detection information, the increased exhaust gas treatment agent reaches the target exhaust gas treatment tank 6 even if the amount increases. It takes about 10 minutes, and due to the time delay, when the increased portion arrives at the exhaust gas treatment tank 6, the charging time into the target exhaust gas treatment tank 6 is finished, and other exhaust gas treatment tanks 6 Since the level of the target exhaust gas treatment tank 6 cannot be recovered in one cycle, the level will be recovered after several cycles, and it takes time to recover the level. Is necessary.

この際、レベルの低い排ガス処理槽６には長時間排ガス処理剤を供給すれば良いが、基本的に排ガス処理槽６からの合計切出量と再生塔８からの切出量は等量となっているので、１つの排ガス処理槽６に長く供給すると、他の排ガス処理槽６のレベルが下がり過ぎ、制御が発散してしまうことになる事が判明した。 At this time, it is only necessary to supply the exhaust gas treatment agent to the low level exhaust gas treatment tank 6 for a long time, but basically the total cut amount from the exhaust gas treatment tank 6 and the cut amount from the regeneration tower 8 are equal. Therefore, it has been found that if the gas is supplied to one exhaust gas treatment tank 6 for a long time, the levels of the other exhaust gas treatment tanks 6 are lowered too much and the control is diverged.

本発明者等は、前記時間遅れによる問題を解消するためには再生塔８から排ガス処理槽６に排ガス処理剤を搬送するコンベア、例えばバケットコンベア１０のバケットに常に許容最大量又はそれに近い量の排ガス処理剤が積載されていると共に該バケットコンベアの移送速度を速くする事が有効で有ることを見出した。即ち、前記バケットには許容最大量又はそれに近い量（許容最大量の８０％以上）の排ガス処理剤が積載され、移送速度が速くなれば、短時間に多量の排ガス処理剤を排ガス処理槽６に供給出来るので、排ガス処理槽６における貯蔵レベルを早急に回復する事が可能となる。
一方、排ガス処理槽６のレベルが大きく低下しない場合には、短時間に多量の排ガス処理剤を排ガス処理槽６に供給する必要はないために、前記バケットに許容最大量又はそれに近い量の排ガス処理剤を積載したまま移送速度を上記の場合に比して低減すれば良い事を知見した。 In order to solve the problem due to the time delay, the present inventors always have an allowable maximum amount or an amount close to the allowable maximum amount on a conveyor that conveys the exhaust gas treatment agent from the regeneration tower 8 to the exhaust gas treatment tank 6, for example, the bucket of the bucket conveyor 10. It has been found that it is effective to load the exhaust gas treating agent and increase the transfer speed of the bucket conveyor. That is, an allowable maximum amount or an amount close to it (80% or more of the allowable maximum amount) of exhaust gas treatment agent is loaded on the bucket, and if the transfer speed is increased, a large amount of exhaust gas treatment agent can be removed in a short time in the exhaust gas treatment tank 6. Therefore, the storage level in the exhaust gas treatment tank 6 can be quickly recovered.
On the other hand, when the level of the exhaust gas treatment tank 6 does not greatly decrease, it is not necessary to supply a large amount of the exhaust gas treatment agent to the exhaust gas treatment tank 6 in a short time. It has been found that the transfer speed may be reduced as compared with the above case while the processing agent is loaded.

本発明は、上記知見を基にしてなされたもので、図１の制御ブロック、図２の制御フローチャートを参照して具体的に説明する。
図１の１３は全排ガス処理槽６の平均レベルの演算部であり、所定時間（１秒）毎に各排ガス処理槽６に設けたレベル計１２からの測定情報（Ｌ１〜Ｌｎ）を読み込んで（Ｓ１）、その平均レベル値Ｌを算出する（Ｓ２）。
１４はレベル差演算部であり、前記平均レベル演算部１３で算出した平均レベル値Ｌと予め設定した管理レベル（管理値）Ｌ０とのレベル差ΔＬ（＝Ｌ−Ｌ０）を演算する（Ｓ３）。 The present invention has been made based on the above knowledge, and will be specifically described with reference to the control block of FIG. 1 and the control flowchart of FIG.
Reference numeral 13 in FIG. 1 denotes an arithmetic unit for the average level of all exhaust gas treatment tanks 6, which reads measurement information (L1 to Ln) from level meters 12 provided in each exhaust gas treatment tank 6 every predetermined time (1 second). (S1), the average level value L is calculated (S2).
A level difference calculation unit 14 calculates a level difference ΔL (= L−L0) between the average level value L calculated by the average level calculation unit 13 and a preset management level (management value) L0 (S3). .

１５は前記レベル差ΔＬに応じて再生塔８から排ガス処理剤の切出量及びバケットコンベア１０の移送速度を制御する制御部である。即ち、具体的には、前記レベル差ΔＬが零（平均レベル値Ｌと管理レベルＬ０が等しい）の場合には再生塔８から排ガス処理剤の切出量及びバケットコンベア１０の移送速度をそのまま維持する情報を再生塔８の切出量調整指令部１６及びバケットコンベア１０の移送速度調整指令部１７に出力する（Ｓ４）。また、前記レベル差ΔＬが零でない場合には、正（Ｌ＞Ｌ０）であるか負（Ｌ＜Ｌ０）で有るかを判別し（Ｓ５）、負（ＹＥＳ）の場合には、そのレベル差ΔＬに応じて、再生塔８からの排ガス処理剤切出量を増加する指令を再生塔８の切出量調整指令部１６に指示する（Ｓ６）と共にバケットコンベア１０の移送速度を速くする指定をバケットコンベア１０の移送速度調整指令部１７に指示する（Ｓ７）。また、前記レベル差ΔＬが正（ＮＯ）の場合には、そのレベル差ΔＬに応じて、再生塔８からの排ガス処理剤切出量を低減する指令を再生塔８の切出量調整指令部１６に指示する（Ｓ８）と共にバケットコンベア１０の移送速度を遅くする指定をバケットコンベア１０の移送速度調整指令部１７に指示する（Ｓ９）。 A control unit 15 controls the amount of exhaust gas treating agent cut out from the regeneration tower 8 and the transfer speed of the bucket conveyor 10 according to the level difference ΔL. Specifically, when the level difference ΔL is zero (the average level value L is equal to the management level L0), the amount of exhaust gas treating agent cut out from the regeneration tower 8 and the transfer speed of the bucket conveyor 10 are maintained as they are. The information to be output is output to the cutting amount adjustment command unit 16 of the regeneration tower 8 and the transfer speed adjustment command unit 17 of the bucket conveyor 10 (S4). If the level difference ΔL is not zero, it is determined whether the level difference is positive (L> L0) or negative (L <L0) (S5). If the level difference ΔL is negative (YES), the level difference According to ΔL, a command to increase the amount of exhaust gas treatment agent cut out from the regeneration tower 8 is instructed to the cut-out amount adjustment command unit 16 of the regeneration tower 8 (S6), and designation to increase the transfer speed of the bucket conveyor 10 is made. The transfer speed adjustment command unit 17 of the bucket conveyor 10 is instructed (S7). In addition, when the level difference ΔL is positive (NO), a command for reducing the amount of exhaust gas treating agent cut out from the regeneration tower 8 is sent according to the level difference ΔL. 16 is instructed to the transfer speed adjustment command unit 17 of the bucket conveyor 10 (S9).

これにより、排ガス処理剤の再生塔８からの切出量に応じてバケットコンベア１０の移動速度が調整（再生塔８からの排ガス処理剤切出量が多くなればバケットコンベア１０の移送速度を速くし、再生塔８からの排ガス処理剤切出量が少なくなればバケットコンベア１０の移送速度を遅く）されることにより、バケットコンベア１０のバケット内における排ガス処理剤量を常にバケットの許容最大量又はそれに近い量に維持することが出来、例えば、排ガス処理剤供給直前の排ガス処理槽６が棚吊り等で貯蔵レベルが急激に低下した場合、直ちにバケットコンベア１０の移送速度が速くなり、その時、バケット内には許容最大限又はこれに近い量の排ガス処理剤が入っているため、短時間に排ガス処理槽６のレベルを回復することが出来る。 As a result, the moving speed of the bucket conveyor 10 is adjusted according to the amount of exhaust gas treating agent extracted from the regeneration tower 8 (if the amount of exhaust gas treating agent extracted from the regeneration tower 8 increases, the transfer speed of the bucket conveyor 10 is increased. When the exhaust gas treatment agent cut-out amount from the regeneration tower 8 decreases, the transfer speed of the bucket conveyor 10 is reduced), so that the exhaust gas treatment agent amount in the bucket of the bucket conveyor 10 is always set to the allowable maximum amount of the bucket or For example, when the storage level of the exhaust gas treatment tank 6 immediately before supply of the exhaust gas treatment agent is suspended by a shelf or the like, the transfer speed of the bucket conveyor 10 is immediately increased. Since the exhaust gas treatment agent is contained in an allowable maximum amount or a quantity close to it, the level of the exhaust gas treatment tank 6 can be recovered in a short time.

尚、上記実施の形態では、レベル計１２を各排ガス処理槽６に設けたが、各排ガス処理槽６の上部に中間ホッパーを設け、この中間ホッパーを介してコンベアで搬送されて来た排ガス処理剤を各排ガス処理槽６に供給しているタイプの場合には、前記レベル計１２をこの中間ホッパーに設ける事が好ましい。
また、コンベアとしてバケットコンベアの場合について説明したが、本発明は、これに限定されるものではなく、ベルトコンベアでも良い。 In the above embodiment, the level meter 12 is provided in each exhaust gas treatment tank 6, but an intermediate hopper is provided in the upper part of each exhaust gas treatment tank 6, and the exhaust gas treatment conveyed by the conveyor via this intermediate hopper. In the case of the type in which the agent is supplied to each exhaust gas treatment tank 6, the level meter 12 is preferably provided in the intermediate hopper.
Moreover, although the case of the bucket conveyor was demonstrated as a conveyor, this invention is not limited to this, A belt conveyor may be sufficient.

本発明の一実施の形態に係る排ガス処理槽への排ガス処理剤の搬送方法を示す制御ブロック図である。It is a control block diagram which shows the conveyance method of the exhaust gas processing agent to the exhaust gas processing tank which concerns on one embodiment of this invention. 同搬送方法を示す制御フローチャートである。It is a control flowchart which shows the conveyance method. 排ガス処理装置の説明図である。It is explanatory drawing of an exhaust gas processing apparatus. 焼結機の排ガス処理系統の説明図である。It is explanatory drawing of the waste gas processing system of a sintering machine.

符号の説明Explanation of symbols

１：焼結機、２：乾式集塵機、３：ブロアー、４：排ガス処理装置、５：煙突、６：排ガス処理槽、６ａ：切出機、７：吸着塔、８：再生塔、８ａ：切出機、９、１０：コンベア、１１：スクリーン、１２：レベル計、１３：平均レベル演算部、１４：レベル差演算部、１５：制御部、１６：再生塔切出量調整指令部、１７：移送速度調整指令部 1: Sintering machine, 2: Dry dust collector, 3: Blower, 4: Exhaust gas treatment device, 5: Chimney, 6: Exhaust gas treatment tank, 6a: Cutting machine, 7: Adsorption tower, 8: Regeneration tower, 8a: Cutting Unloader, 9, 10: Conveyor, 11: Screen, 12: Level meter, 13: Average level calculation unit, 14: Level difference calculation unit, 15: Control unit, 16: Regeneration tower cutting amount adjustment command unit, 17: Transfer speed adjustment command section

Claims (3)

内部に収容された排ガス処理剤を上方から下方に移動させながら排ガスと接触させた後に下部から排出させる複数の排ガス処理槽と、前記排ガス処理剤を再生する再生塔と、該再生塔から切出した排ガス処理剤を前記各排ガス処理槽に搬送するコンベアとを設け、前記各排ガス処理槽に順番に、且つ、予め設定したサイクル時間で前記全排ガス処理槽に前記コンベアで搬送した排ガス処理剤を供給する方法において、
前記排ガス処理槽の排ガス処理剤レベルが予め設定した管理値になるように前記再生塔からの排ガス処理剤切出量を調整し、更に、この排ガス処理剤切出量に応じて前記コンベアの搬送速度を調整して、前記コンベアにおける単位時間当たりの搬送量が、該コンベアの搬送能力の許容最大限又はそれに近くなるようにしたことを特徴とする排ガス処理槽への排ガス処理剤の搬送方法。 A plurality of exhaust gas treatment tanks that are exhausted from the lower part after contacting the exhaust gas while moving the exhaust gas treatment agent accommodated in the interior downward from above, a regeneration tower that regenerates the exhaust gas treatment agent, and the regeneration tower cut out from the regeneration tower A conveyor for conveying the exhaust gas treatment agent to each of the exhaust gas treatment tanks is provided, and the exhaust gas treatment agent conveyed by the conveyor to the exhaust gas treatment tanks in order and in a preset cycle time is supplied to each of the exhaust gas treatment tanks. In the way to
The amount of exhaust gas treatment agent cut out from the regeneration tower is adjusted so that the level of the exhaust gas treatment agent in the exhaust gas treatment tank becomes a preset control value, and further, the conveyor is conveyed according to the amount of exhaust gas treatment agent cut out. A method for transporting an exhaust gas treatment agent to an exhaust gas treatment tank, wherein the speed is adjusted so that the transport amount per unit time in the conveyor is at or near the maximum allowable transport capacity of the conveyor. 前記コンベアの搬送速度の調整は、前記排ガス処理剤の切出量が多い場合には速くし、前記排ガス処理剤の切出量が少ない場合には遅くすることを特徴とする請求項１記載の排ガス処理槽への排ガス処理剤の搬送方法。 The adjustment of the conveyance speed of the conveyor is made faster when the cut-out amount of the exhaust gas treatment agent is large, and is slow when the cut-out amount of the exhaust gas treatment agent is small. A method for transporting an exhaust gas treatment agent to an exhaust gas treatment tank. 前記排ガス処理槽の排ガス処理剤レベルは、前記全排ガス処理槽の平均レベルであることを特徴とする請求項１又は２記載の排ガス処理槽への排ガス処理剤の搬送方法。 The method for transporting an exhaust gas treatment agent to the exhaust gas treatment tank according to claim 1 or 2, wherein the exhaust gas treatment agent level of the exhaust gas treatment tank is an average level of the all exhaust gas treatment tanks.
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Publication number Priority date Publication date Assignee Title
JP2013052377A (en) * 2011-09-06 2013-03-21 Sumitomo Heavy Ind Ltd Exhaust gas treatment apparatus and exhaust gas treatment method
JP2020040056A (en) * 2018-09-13 2020-03-19 日本製鉄株式会社 Gas treatment system
JP7134323B1 (en) 2021-11-30 2022-09-09 日鉄エンジニアリング株式会社 Exhaust gas treatment device and control method

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JP2000237527A (en) * 1999-02-16 2000-09-05 Sumitomo Heavy Ind Ltd Waste gas treating device and method therefor
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JPS6316024A (en) * 1986-07-09 1988-01-23 Sumitomo Heavy Ind Ltd Control of packing level in molding bed type packed tower
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Publication number Priority date Publication date Assignee Title
JP2013052377A (en) * 2011-09-06 2013-03-21 Sumitomo Heavy Ind Ltd Exhaust gas treatment apparatus and exhaust gas treatment method
JP2020040056A (en) * 2018-09-13 2020-03-19 日本製鉄株式会社 Gas treatment system
JP7131224B2 (en) 2018-09-13 2022-09-06 日本製鉄株式会社 Gas processing system
JP7134323B1 (en) 2021-11-30 2022-09-09 日鉄エンジニアリング株式会社 Exhaust gas treatment device and control method
JP2023080792A (en) * 2021-11-30 2023-06-09 日鉄エンジニアリング株式会社 Exhaust gas treatment apparatus and control method

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