JP2010196924A - Purge method of intermediate hopper of waste charging device of waste melting furnace, and intermediate hopper of waste charging device of waste melting furnace - Google Patents

Purge method of intermediate hopper of waste charging device of waste melting furnace, and intermediate hopper of waste charging device of waste melting furnace Download PDF

Info

Publication number
JP2010196924A
JP2010196924A JP2009039949A JP2009039949A JP2010196924A JP 2010196924 A JP2010196924 A JP 2010196924A JP 2009039949 A JP2009039949 A JP 2009039949A JP 2009039949 A JP2009039949 A JP 2009039949A JP 2010196924 A JP2010196924 A JP 2010196924A
Authority
JP
Japan
Prior art keywords
waste
intermediate hopper
seal valve
melting furnace
furnace
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.)
Granted
Application number
JP2009039949A
Other languages
Japanese (ja)
Other versions
JP5388278B2 (en
Inventor
Mitsumasa Todaka
光正 戸高
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Engineering Co Ltd
Original Assignee
Nippon Steel Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Engineering Co Ltd filed Critical Nippon Steel Engineering Co Ltd
Priority to JP2009039949A priority Critical patent/JP5388278B2/en
Publication of JP2010196924A publication Critical patent/JP2010196924A/en
Application granted granted Critical
Publication of JP5388278B2 publication Critical patent/JP5388278B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Gasification And Melting Of Waste (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To purge with an exhaust pipe provided in a lower part of an intermediate hopper arranged in a waste charging device of a waste melting furnace to close a lower seal valve while preventing the slightly opened state of the lower seal valve, and to allow use of steam as purge gas. <P>SOLUTION: An upper seal valve 1 opened during reception of waste is provided at the upper end of the intermediate hopper 7 of the waste charging device arranged in the upper part of the waste melting furnace, and the lower seal valve 3 opened during charging of stored waste to inside of the waste melting furnace is provided at the lower end. In gas purge of the intermediate hopper 7, first, furnace interior gas intruding into the intermediate hopper 7 during charging of the waste to inside of the waste melting furnace is purged by using the purge gas by opening the exhaust valve 11 provided in the lower part of the intermediate hopper 7 and leading to the furnace interior with the lower seal valve 3 closed, and then, the exhaust valve 11 is closed. Next, the upper seal valve 1 is opened and outside air is sucked by a suction pipe 5 for air purge and is purged. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、廃棄物を熱分解溶融処理する廃棄物溶融炉の廃棄物装入装置に設けられた中間ホッパに侵入した炉内ガスのパージに関する。   The present invention relates to purging of in-furnace gas that has entered an intermediate hopper provided in a waste charging apparatus of a waste melting furnace for pyrolyzing and melting waste.

一般廃棄物、産業廃棄物等の廃棄物の処理として、廃棄物をシャフト炉式の廃棄物溶融炉内で熱分解溶融処理する方法が実施されている。廃棄物溶融炉への廃棄物の装入時には、廃棄物溶融炉内で発生した可燃性でかつ人体に有害な成分を含む炉内ガスが炉外へ漏出することを防ぐために、廃棄物溶融炉の廃棄物装入装置は、中間ホッパの上端部に廃棄物の受入時に開閉する上部シール弁、下端部に貯留廃棄物の廃棄物溶融炉内への投入時に開閉する下部シール弁を設けた中間ホッパを備えている。下部シール弁を開いて廃棄物を投入する際に中間ホッパ内に侵入した炉内ガスは、廃棄物の投入後に不活性ガスパージにより炉内に排出している。   As a treatment of waste such as general waste and industrial waste, a method of thermally decomposing and melting waste in a shaft furnace type waste melting furnace has been implemented. When charging waste into the waste melting furnace, in order to prevent the in-furnace gas generated in the waste melting furnace and containing harmful components to the human body from leaking out of the furnace, This waste charging device is an intermediate hopper provided with an upper seal valve that opens and closes at the upper end of the intermediate hopper and a lower seal valve that opens and closes when the stored waste is introduced into the waste melting furnace at the lower end. Has a hopper. Furnace gas that has entered the intermediate hopper when the lower seal valve is opened and waste is thrown in is discharged into the furnace by inert gas purging after the waste is thrown in.

このパージに必要な不活性ガスは中間ホッパ容積の３〜４倍に達し、不活性ガスが高価なことからランニングコストが高くついていた。そこで、不活性ガスのパージ量を大幅に低減させる中間ホッパのパージ方法が提案されている（特許文献１参照）。   The inert gas necessary for this purge reaches 3 to 4 times the volume of the intermediate hopper, and the inert gas is expensive, so the running cost is high. In view of this, a method for purging an intermediate hopper that significantly reduces the purge amount of the inert gas has been proposed (see Patent Document 1).

図３は従来の不活性ガスのパージ方法を実施するための設備を示す図、図４は中間ホッパのパージ方法の手順を示す図である。   FIG. 3 is a diagram showing equipment for carrying out a conventional inert gas purging method, and FIG. 4 is a diagram showing a procedure of an intermediate hopper purging method.

廃棄物溶融炉２０の炉上部の廃棄物装入装置には、廃棄物ピット２１から廃棄物クレーン２２で搬送された廃棄物を受け入れるゴミ投入ホッパ２が設けられ、ゴミ投入ホッパ２の下部に炉内に投入する廃棄物を一旦貯留する中間ホッパ７が連設されている。     The waste charging device at the upper part of the waste melting furnace 20 is provided with a garbage input hopper 2 that receives the waste conveyed by the waste crane 22 from the waste pit 21, and a furnace at the lower part of the waste input hopper 2. An intermediate hopper 7 for temporarily storing waste to be put in is provided continuously.

中間ホッパ７は、上部に上部シール弁１、下部に下部シール弁３を備え、上部シール弁１でゴミ投入ホッパ２と仕切られ、下部シール弁３で炉内と仕切られている。     The intermediate hopper 7 includes an upper seal valve 1 at the upper part and a lower seal valve 3 at the lower part. The upper seal valve 1 partitions the dust input hopper 2 and the lower seal valve 3 partitions the inside of the furnace.

廃棄物ピット２１から廃棄物クレーン２２で搬送された廃棄物は、ゴミ投入ホッパ２に受け入れた後、中間ホッパ７の上部シール弁１を開いて中間ホッパ７へ投入されて一旦貯留される。その後、上部シール弁を閉として廃棄物は下部シール弁３を開いて炉内に投入される。   The waste transported from the waste pit 21 by the waste crane 22 is received by the dust input hopper 2, then the upper seal valve 1 of the intermediate hopper 7 is opened and input to the intermediate hopper 7 to be temporarily stored. Thereafter, the upper seal valve is closed and the waste is put into the furnace by opening the lower seal valve 3.

廃棄物溶融炉２０は、炉内で発生した可燃性の炉内ガスを燃焼室２３へ導入するために排ガス管２４で燃焼室２３と接続される。燃焼室２３の燃焼バーナ２５の燃焼空気は、廃棄物ピット２１の臭気対策上、廃棄物ピット２１から吸引される。例えば、廃棄物ピット内の空気を吸引するために設けられた燃焼空気吹込ダクト２６と燃焼空気ファン２７により燃焼用空気として供給される。   The waste melting furnace 20 is connected to the combustion chamber 23 by an exhaust gas pipe 24 in order to introduce combustible in-furnace gas generated in the furnace into the combustion chamber 23. Combustion air of the combustion burner 25 in the combustion chamber 23 is sucked from the waste pit 21 to prevent odor of the waste pit 21. For example, the air is supplied as combustion air by a combustion air blowing duct 26 and a combustion air fan 27 provided for sucking air in the waste pit.

中間ホッパ７には、不活性ガス吹込用配管２８が接続されるとともに、不活性ガスパージにより置換されたガスを燃焼空気吹込ダクト２６へ導入する空気導入配管２９が接続されている。不活性ガス吹込用配管２８には不活性ガスパージ弁３０が、空気導入配管２９には空気導入弁３１が設けられる。   An inert gas blowing pipe 28 is connected to the intermediate hopper 7, and an air introduction pipe 29 for introducing the gas replaced by the inert gas purge into the combustion air blowing duct 26 is connected. The inert gas blowing pipe 28 is provided with an inert gas purge valve 30, and the air introduction pipe 29 is provided with an air introduction valve 31.

次にパージ方法について説明する。図４において、下部シール弁３を開いて中間ホッパ７から廃棄物を廃棄物溶融炉内に投入すると、炉内ガスが中間ホッパ７内に侵入する。廃棄物の投入後に下部シール弁３を微開状態にして隙間を形成して不活性ガスパージ弁３０を開いて不活性ガスを導入してパージを行う。この不活性ガスのパージにより、下部シール弁４の隙間から中間ホッパ内のガスが廃棄物溶融炉内側に排気されるようにする。また、空気導入配管２９の空気導入弁３１は閉めてパージガスが導入されないようにしておく。不活性ガスパージにより中間ホッパ内のガスの濃度が大気中での爆発下限値未満になる程度になると不活性ガスパージを完了する。   Next, the purge method will be described. In FIG. 4, when the lower seal valve 3 is opened and waste is introduced into the waste melting furnace from the intermediate hopper 7, furnace gas enters the intermediate hopper 7. After the waste is charged, the lower seal valve 3 is slightly opened to form a gap, and the inert gas purge valve 30 is opened to introduce the inert gas for purging. By this inert gas purge, the gas in the intermediate hopper is exhausted to the inside of the waste melting furnace through the gap between the lower seal valves 4. Further, the air introduction valve 31 of the air introduction pipe 29 is closed so that purge gas is not introduced. The inert gas purge is completed when the concentration of the gas in the intermediate hopper becomes less than the lower explosion limit value in the atmosphere due to the inert gas purge.

不活性ガスパージが完了すると、不活性ガスパージ弁３０を閉じ、下部シール弁３を全閉とし、上部シール弁１を中間状態に開き、空気導入弁３１を開いて上部シール弁１の開放部より空気を吸引して中間ホッパ７内を空気置換し、中間ホッパ７内のガスは空気導入配管２９から負圧に調整された燃焼空気吸気ダクト２６へ吸引されていく。ＣＯ濃度が１００ｐｐｍ以下になるまでパージを行う。     When the inert gas purge is completed, the inert gas purge valve 30 is closed, the lower seal valve 3 is fully closed, the upper seal valve 1 is opened to an intermediate state, the air introduction valve 31 is opened, and air is opened from the opening portion of the upper seal valve 1. Then, the air in the intermediate hopper 7 is replaced with air, and the gas in the intermediate hopper 7 is sucked from the air introduction pipe 29 into the combustion air intake duct 26 adjusted to a negative pressure. Purge until the CO concentration is 100 ppm or less.

特開２００７−２２５１９６号公報JP 2007-225196 A

前記特許文献では、中間ホッパのパージに不活性ガスとしてＮ２と外気を使用している。不活性ガスとしては通常Ｎ２が使用され、中間ホッパ内のガスが爆発限界以下の程度とするためには、Ｎ２は中間ホッパの容積分のＮ２が必要となる。 In the above patent document, the purging of the intermediate hopper using N 2 and the outside air as an inert gas. Normally, N 2 is used as the inert gas, and N 2 needs N 2 corresponding to the volume of the intermediate hopper so that the gas in the intermediate hopper is below the explosion limit.

さらに中間ホッパ内の炉内ガスの排出先は炉内へ直接排気されるが、この排気のため、下部シール弁を微開する方法がとられており、この微開位置はリミットスイッチで検出されている。下部シール弁は弁口径が大きく微開角度によって開口断面積が大きく変化する。通常、パージ中に炉内圧力の変動により中間ホッパ内に炉内ガスが進入するのを防止するために開口部からの吹出速度は１０〜２０ｍ／ｓとすることが望ましく、その開口断面積がその値となるように調整が必要であるが、実態は調整が困難で確実性が薄い。   Furthermore, the discharge destination of the gas in the furnace in the intermediate hopper is directly exhausted into the furnace. For this exhaust, a method of slightly opening the lower seal valve is adopted, and this position is detected by a limit switch. ing. The lower seal valve has a large valve diameter, and the opening cross-sectional area varies greatly depending on the slight opening angle. Usually, in order to prevent the in-furnace gas from entering the intermediate hopper due to fluctuations in the in-furnace pressure during the purge, it is desirable that the blowing speed from the opening is 10 to 20 m / s, and the opening cross-sectional area is Adjustment is necessary to achieve this value, but in reality the adjustment is difficult and the certainty is low.

そこで、本発明は、廃棄物溶融炉の廃棄物装入装置に配置されている中間ホッパの下部に排気弁を設けて下部シール弁を微開状態にすることなく閉めた状態でパージすることができる中間ホッパのパージ方法およびその装置を提供するものである。   Accordingly, the present invention provides an exhaust valve at the lower part of the intermediate hopper arranged in the waste charging device of the waste melting furnace, and the lower seal valve can be purged in a closed state without being slightly opened. An intermediate hopper purging method and an apparatus therefor are provided.

本発明は、廃棄物溶融炉の上部に配置された廃棄物装入装置の中間ホッパの上端部に廃棄物の受入時に開く上部シール弁が設けられるとともに、下端部に貯留廃棄物の廃棄物溶融炉内への投入時に開く下部シール弁が設けられた中間ホッパのパージ方法において、廃棄物の廃棄物溶融炉内への投入時に中間ホッパ内に侵入した炉内ガスを、最初にパージガスを用いて下部シール弁を閉じた状態で中間ホッパの下部に設けられた炉内に通じる排気弁を開いてパージした後に排気弁を閉じ、次いで上部シール弁を開いて外気を空気パージ用吸引管で吸引してパージすることを特徴とする。この構成において、前記パージガスとしてボイラ蒸気を使用することができる。   The present invention is provided with an upper seal valve that opens at the upper end of an intermediate hopper of a waste charging device disposed at the upper part of a waste melting furnace, and at the lower end, the waste melting of stored waste In the method of purging the intermediate hopper provided with a lower seal valve that is opened when it is put into the furnace, the gas in the furnace that has entered the intermediate hopper when the waste is put into the waste melting furnace is first used with the purge gas. With the lower seal valve closed, the exhaust valve leading to the furnace provided in the lower part of the intermediate hopper is opened and purged, then the exhaust valve is closed, then the upper seal valve is opened and the outside air is sucked in with the air purge suction pipe And purging. In this configuration, boiler steam can be used as the purge gas.

さらに、本発明は、廃棄物溶融炉の上部に配置された廃棄物装入装置の中間ホッパの上端部に廃棄物の受入時に開く上部シール弁が設けられるとともに、下端部に貯留廃棄物の廃棄物溶融炉内への投入時に開く下部シール弁が設けられた中間ホッパにおいて、中間ホッパからパージガスを、下部シール弁ケーシングを通して炉内に排気する排気弁を下部シール弁ケーシング内に位置する、中間ホッパの下部に設けたことを特徴とする。この構成において、前記排気弁は、回動により開閉可能であるとともに、排気弁の開動作により下部シール弁ケーシングの内壁に接近して付着したダストをかき落とす機能を持たせている。   Furthermore, the present invention is provided with an upper seal valve that opens at the upper end of the intermediate hopper of the waste charging device disposed at the upper part of the waste melting furnace, and at the lower end, the stored waste is disposed of. In an intermediate hopper provided with a lower seal valve that is opened when charged into a material melting furnace, an intermediate hopper having an exhaust valve for exhausting purge gas from the intermediate hopper into the furnace through the lower seal valve casing is located in the lower seal valve casing It was provided in the lower part of this. In this configuration, the exhaust valve can be opened and closed by rotation, and has a function of scraping dust adhering to the inner wall of the lower seal valve casing by opening the exhaust valve.

本発明は、所定の開口断面積を有する排気弁を設け、所定の排気速度で逆流を防ぐ方式とすることにより、下部シール弁の微開角度を調整することなく、閉めたままの状態で確実にパージすることができる。   According to the present invention, an exhaust valve having a predetermined opening cross-sectional area is provided to prevent back flow at a predetermined exhaust speed, so that the lower seal valve can be reliably closed without adjusting the fine opening angle. Can be purged.

また、本発明は、排気弁を下部シール弁ケーシング内に設置し、排気ガスの衝突によりケーシング壁に付着したダストを排気弁の開動作でこすり取る構造とすることにより、ダストの成長を防止することができる。   In addition, the present invention prevents the growth of dust by installing the exhaust valve in the lower seal valve casing and scraping dust adhering to the casing wall due to the collision of the exhaust gas by opening the exhaust valve. be able to.

また、本発明は、パージガスとしてごみ処理施設で熱回収のために設置されているボイラー蒸気を使用することにより、従来使用されている高価なＮ２を必要としなくなる。 In addition, the present invention eliminates the need for conventionally used expensive N 2 by using boiler steam installed for heat recovery in the waste treatment facility as the purge gas.

本発明によるごみ装入部の中間ホッパを示す縦断面図である。It is a longitudinal cross-sectional view which shows the intermediate hopper of the refuse charging part by this invention. 図１の断面Ａ−Ａを示す水平断面図である。It is a horizontal sectional view which shows the cross section AA of FIG. 従来の不活性ガスのパージを実施するための設備を示す概略図である。It is the schematic which shows the installation for implementing the purge of the conventional inert gas. 従来のごみ装入部の中間ホッパを示す縦断面図である。It is a longitudinal cross-sectional view which shows the intermediate hopper of the conventional waste charging part.

図１および図２に示すように、本発明の中間ホッパ７は、図３および図４に示す従来の廃棄物装入装置のように、廃棄物溶融炉の炉上部に設けられた廃棄物装入装置と同様に、廃棄物を受け入れるゴミ投入ホッパ２の下部に連設され、炉内に投入する廃棄物を一旦貯留する。   As shown in FIGS. 1 and 2, the intermediate hopper 7 of the present invention is a waste container provided at the upper part of the waste melting furnace as in the conventional waste charging apparatus shown in FIGS. Similar to the charging device, it is connected to the lower portion of the dust input hopper 2 that receives the waste, and temporarily stores the waste to be input into the furnace.

図１および図２において、中間ホッパ７は、その周りが保温材１６で被覆され、上部と下部の開口部には上部シール弁１と下部シール弁３がそれぞれ設けられている。上部シール弁１により上方の受入ホッパ２と仕切られ、下部シール弁３により下方の炉内と仕切られるようになっている。下部シール弁３は、廃棄物溶融炉の炉上部を覆う下部シール弁ケーシング６内を回動する。   1 and 2, the intermediate hopper 7 is covered with a heat insulating material 16, and an upper seal valve 1 and a lower seal valve 3 are provided at upper and lower openings, respectively. The upper receiving valve 2 is partitioned from the upper receiving hopper 2 by the upper seal valve 1, and is partitioned from the lower furnace by the lower sealing valve 3. The lower seal valve 3 rotates in the lower seal valve casing 6 that covers the upper part of the waste melting furnace.

廃棄物ピットから廃棄物クレーンで搬送された廃棄物は、ゴミ投入ホッパ２で受け入れた後、中間ホッパ７の上部シール弁１と下部シール弁３を開閉して、ゴミ投入ホッパ２からの廃棄物が一旦貯留される。その後、廃棄物は、作動シリンダ９により回転駆動レバー８を回転させて下部シール弁３を開いて炉内に投入される。下部シール弁３の開度は開度検出スイッチ１０により検出される。   After the waste transported from the waste pit by the waste crane is received by the dust input hopper 2, the upper seal valve 1 and the lower seal valve 3 of the intermediate hopper 7 are opened and closed, and the waste from the dust input hopper 2 is opened. Is temporarily stored. Thereafter, the waste is thrown into the furnace by rotating the rotary drive lever 8 by the operating cylinder 9 to open the lower seal valve 3. The opening degree of the lower seal valve 3 is detected by an opening degree detection switch 10.

中間ホッパ７には、不活性ガスあるいは蒸気などのパージガス吹込用配管４が接続されるとともに、空気パージにより置換されたガスを吸引する空気パージ用吸引管５が接続されている。   A purge gas blowing pipe 4 such as an inert gas or steam is connected to the intermediate hopper 7, and an air purge suction pipe 5 for sucking the gas replaced by the air purge is connected.

下部シール弁ケーシング内に位置する、中間ホッパ７の下部には、炉内排気口１５（図２では２個所）が設けられ、炉内排気口１５は排気弁１１により開閉する。排気弁１１は、シリンダ１４でアーム１３を前後進させて回動させて開閉する。排気弁１１は回動の際に、下部シール弁ケーシング６の内壁に接近する寸法とし、排気弁１１の回動により中間ホッパ７の内壁に排気ガスの衝突により付着したダスト１２が排気弁の開動作によりこすり取られるようにしてダストの成長を防止する。   In the lower part of the intermediate hopper 7 located in the lower seal valve casing, furnace exhaust ports 15 (two places in FIG. 2) are provided, and the furnace exhaust ports 15 are opened and closed by the exhaust valve 11. The exhaust valve 11 is opened and closed by rotating the arm 13 back and forth with a cylinder 14. The exhaust valve 11 is dimensioned so as to approach the inner wall of the lower seal valve casing 6 when rotating, and dust 12 adhering to the inner wall of the intermediate hopper 7 due to the collision of the exhaust gas due to the rotation of the exhaust valve 11 opens the exhaust valve. Prevents dust growth by being scraped off by movement.

次ぎにパージ方法について説明する。   Next, the purge method will be described.

上部シール弁１を閉めた状態で下部シール弁３を開いて中間ホッパ７内の廃棄物を廃棄物溶融炉内に投入する。このとき、炉内ガスが中間ホッパ７内に侵入する。廃棄物を投入後、下部シール弁３を閉めて、シリンダ１４で排気弁１１を駆動させて炉内排気口１５を開いた後、パージガス吹込用配管４から不活性ガスあるいは熱回収のために設置されているボイラー蒸気を導入してガスパージを行う。   With the upper seal valve 1 closed, the lower seal valve 3 is opened, and the waste in the intermediate hopper 7 is put into the waste melting furnace. At this time, the in-furnace gas enters the intermediate hopper 7. After throwing in the waste, the lower seal valve 3 is closed, the exhaust valve 11 is driven by the cylinder 14 to open the furnace exhaust port 15, and then installed for recovering inert gas or heat from the purge gas blowing pipe 4. Gas purge is performed by introducing boiler steam.

このパージにより、炉内排気口１５から中間ホッパ７内のガスが廃棄物溶融炉内側に排気されるようにする。ガスパージにより中間ホッパ内のガスの濃度が大気中での爆発下限値未満になるまでガスパージを行う。   By this purge, the gas in the intermediate hopper 7 is exhausted from the furnace exhaust port 15 to the inside of the waste melting furnace. The gas purge is performed until the gas concentration in the intermediate hopper becomes less than the lower limit of explosion in the atmosphere by the gas purge.

ガスパージが完了すると、上部シール弁１を図１のａの位置からｂの位置の半開状態にし、空気パージ用吸引管５の弁を開いて上部シール弁１の開放部より空気を吸引して中間ホッパ７内を空気置換して中間ホッパ７内のガスが空気パージ用吸引管５へ吸引されていく。     When the gas purge is completed, the upper seal valve 1 is placed in a half-open state from the position a in FIG. 1 to the position b, the valve of the air purge suction pipe 5 is opened, and air is sucked from the open portion of the upper seal valve 1 The inside of the hopper 7 is replaced with air, and the gas in the intermediate hopper 7 is sucked into the air purge suction pipe 5.

パージガスとして蒸気を使用した場合中間ホッパ内で１部ドレン化し、中間ホッパ内ガスとともに炉内排気口から噴出するため、下部シール弁ケーシングの衝突部には湿ったダストが成長するが、これは排気弁の開動作により常にかき落とされるため、炉内への流路は確保される。   When steam is used as the purge gas, it is partly drained in the intermediate hopper and ejected from the furnace exhaust port together with the gas in the intermediate hopper, so that moist dust grows in the collision part of the lower seal valve casing. Since it is always scraped off by the opening operation of the valve, a flow path into the furnace is secured.

１：上部シール弁 ２：ごみ投入ホッパ
３：下部シール弁 ４：パージガス吹込管
５：空気パージ用吸引管 ６：下部シール弁ケーシング
７：中間ホッパ ８：下部シール弁回転駆動レバー
９：下部シール弁作動シリンダ １０：下部シール弁開度検出スイッチ
１１：中間ホッパ内ガスの炉内排気弁 １２：付着ダスト
１３：炉内排気弁回転駆動アーム １４：駆動シリンダ
１５：炉内排気口 １６：保温材
２０：廃棄物溶融炉 ２１：廃棄物ピット
２２：廃棄物クレーン ２３：燃焼室
２４：排ガス管 ２５：燃焼バーナ
２６：燃焼空気吹込ダクト ２７：燃焼空気ファン
２８：不活性ガス吹込用配管 ２９：空気導入配管
３０：不活性ガスパージ弁 ３１：空気導入弁
ａ：上部シール弁全閉の状態 ｂ：上部シール弁半閉の状態 1: Upper seal valve 2: Waste input hopper 3: Lower seal valve 4: Purge gas blowing pipe 5: Air purge suction pipe 6: Lower seal valve casing 7: Intermediate hopper 8: Lower seal valve rotation drive lever 9: Lower seal valve Operating cylinder 10: Lower seal valve opening detection switch 11: In-furnace exhaust valve for intermediate hopper gas 12: Adhering dust 13: In-furnace exhaust valve rotation drive arm 14: Drive cylinder 15: In-furnace exhaust port 16: Insulating material 20 : Waste melting furnace 21: Waste pit 22: Waste crane 23: Combustion chamber 24: Exhaust gas pipe 25: Combustion burner 26: Combustion air blowing duct 27: Combustion air fan 28: Inert gas blowing pipe 29: Air introduction Piping 30: Inert gas purge valve 31: Air inlet valve a: Upper seal valve fully closed b: Upper seal valve half closed

Claims (4)

廃棄物溶融炉の上部に配置された廃棄物装入装置の中間ホッパであって、中間ホッパの上端部に廃棄物の受入時に開く上部シール弁が設けられるとともに、下端部に貯留廃棄物の廃棄物溶融炉内への投入時に開く下部シール弁が設けられた中間ホッパのパージ方法において、
廃棄物の廃棄物溶融炉内への投入時に中間ホッパ内に侵入した炉内ガスを、最初にパージガスを用いて下部シール弁を閉じた状態で中間ホッパの下部に設けられた炉内に通じる排気弁を通してパージした後に排気弁を閉じ、次いで上部シール弁を開いて外気を空気パージ用吸引管で吸引してパージすることを特徴とする廃棄物溶融炉の廃棄物装入装置の中間ホッパのパージ方法。 An intermediate hopper of a waste charging device disposed at the upper part of the waste melting furnace, wherein an upper seal valve that is opened at the upper end of the intermediate hopper is provided at the time of receiving waste, and stored waste is disposed at the lower end. In the method of purging the intermediate hopper provided with a lower seal valve that opens at the time of charging into the material melting furnace,
Furnace gas that entered the intermediate hopper when the waste was introduced into the waste melting furnace was first exhausted into the furnace provided at the lower part of the intermediate hopper with the purge gas closed and the lower seal valve closed. Purging the intermediate hopper of the waste charging device of the waste melting furnace, wherein the exhaust valve is closed after purging through the valve, and then the upper seal valve is opened and the outside air is purged by suction with an air purge suction pipe Method. 前記パージガスがボイラ蒸気であることを特徴とする請求項１記載の廃棄物溶融炉の廃棄物装入装置の中間ホッパのパージ方法。   The method for purging an intermediate hopper of a waste charging apparatus for a waste melting furnace according to claim 1, wherein the purge gas is boiler steam. 廃棄物溶融炉の上部に配置された廃棄物装入装置の中間ホッパであって、中間ホッパの上端部に廃棄物の受入時に開く上部シール弁が設けられるとともに、下端部に貯留廃棄物の廃棄物溶融炉内への投入時に開く下部シール弁が設けられた中間ホッパにおいて、
中間ホッパからパージガスを、下部シール弁ケーシングを通して炉内に排気する排気弁を下部シール弁ケーシング内に位置する、中間ホッパの下部に設けたことを特徴とする廃棄物溶融炉の廃棄物装入装置の中間ホッパ。 An intermediate hopper of a waste charging device disposed at the upper part of the waste melting furnace, wherein an upper seal valve that is opened at the upper end of the intermediate hopper is provided at the time of receiving waste, and stored waste is disposed at the lower end. In the intermediate hopper provided with a lower seal valve that opens when thrown into the material melting furnace,
A waste charging apparatus for a waste melting furnace characterized in that an exhaust valve for exhausting purge gas from the intermediate hopper into the furnace through the lower seal valve casing is provided in the lower part of the intermediate hopper, located in the lower seal valve casing Middle hopper. 前記排気弁は、回動により開閉可能であるとともに、排気弁の開動作により下部シール弁ケーシングの内壁に接近して付着したダストをかき落とす機能をもたせたことを特徴とする請求項３記載の廃棄物溶融炉の廃棄物装入装置の中間ホッパ。
4. The exhaust valve according to claim 3, wherein the exhaust valve can be opened and closed by rotation, and has a function of scraping off dust adhering to the inner wall of the lower seal valve casing by opening the exhaust valve. Intermediate hopper for waste charging equipment of waste melting furnace.
JP2009039949A 2009-02-23 2009-02-23 Method for purging intermediate hopper of waste charging apparatus of waste melting furnace and intermediate hopper of waste charging apparatus of waste melting furnace Active JP5388278B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009039949A JP5388278B2 (en) 2009-02-23 2009-02-23 Method for purging intermediate hopper of waste charging apparatus of waste melting furnace and intermediate hopper of waste charging apparatus of waste melting furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009039949A JP5388278B2 (en) 2009-02-23 2009-02-23 Method for purging intermediate hopper of waste charging apparatus of waste melting furnace and intermediate hopper of waste charging apparatus of waste melting furnace

Publications (2)

Publication Number Publication Date
JP2010196924A true JP2010196924A (en) 2010-09-09
JP5388278B2 JP5388278B2 (en) 2014-01-15

Family

ID=42821838

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009039949A Active JP5388278B2 (en) 2009-02-23 2009-02-23 Method for purging intermediate hopper of waste charging apparatus of waste melting furnace and intermediate hopper of waste charging apparatus of waste melting furnace

Country Status (1)

Country Link
JP (1) JP5388278B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012026598A (en) * 2010-07-20 2012-02-09 Nippon Steel Engineering Co Ltd Waste material and subsidiary material charging apparatus of waste melting furnace
JP2017014040A (en) * 2015-06-30 2017-01-19 住友金属鉱山株式会社 Method for producing nickel oxide powder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5494774A (en) * 1978-01-12 1979-07-26 Nippon Steel Corp Top charging device for solid waste melting furnace
JPH04138529U (en) * 1991-05-31 1992-12-25 日立造船株式会社 Garbage supply device to pyrolysis furnace
JPH10281430A (en) * 1997-04-04 1998-10-23 Tsunehisa Matsuoka Solid fuel feeding device
JP2002089818A (en) * 2000-09-13 2002-03-27 Babcock Hitachi Kk Gasifying furnace sealing method, and combustible substance supply apparatus
JP2007225196A (en) * 2006-02-23 2007-09-06 Nippon Steel Engineering Co Ltd Purging method for intermediate hopper in waste material inserting apparatus of waste melting furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5494774A (en) * 1978-01-12 1979-07-26 Nippon Steel Corp Top charging device for solid waste melting furnace
JPH04138529U (en) * 1991-05-31 1992-12-25 日立造船株式会社 Garbage supply device to pyrolysis furnace
JPH10281430A (en) * 1997-04-04 1998-10-23 Tsunehisa Matsuoka Solid fuel feeding device
JP2002089818A (en) * 2000-09-13 2002-03-27 Babcock Hitachi Kk Gasifying furnace sealing method, and combustible substance supply apparatus
JP2007225196A (en) * 2006-02-23 2007-09-06 Nippon Steel Engineering Co Ltd Purging method for intermediate hopper in waste material inserting apparatus of waste melting furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012026598A (en) * 2010-07-20 2012-02-09 Nippon Steel Engineering Co Ltd Waste material and subsidiary material charging apparatus of waste melting furnace
JP2017014040A (en) * 2015-06-30 2017-01-19 住友金属鉱山株式会社 Method for producing nickel oxide powder

Also Published As

Publication number Publication date
JP5388278B2 (en) 2014-01-15

Similar Documents

Publication Publication Date Title
US9770704B2 (en) Method and device for removing dust and cooling for active coke regeneration apparatus
JP5388278B2 (en) Method for purging intermediate hopper of waste charging apparatus of waste melting furnace and intermediate hopper of waste charging apparatus of waste melting furnace
CN206862715U (en) A kind of effectively pre- anticlogging online fly ash sampling device
JP2007045929A (en) Method for start-up of coke oven
JP2013224831A (en) Closed smoke exhaustion system
US7867305B2 (en) Bag-filter type small deodorizing and dust collecting apparatus
JP3987871B1 (en) Blast treatment equipment
JP4383417B2 (en) Method for purging intermediate hopper of waste charging equipment of waste melting furnace
JP2014122090A (en) Transport method of fly ash
KR20150027038A (en) Method for transporting impurities in pressurized fluidized furnace system
JP5641865B2 (en) Dust airflow transfer device for exhaust gas treatment device in waste treatment facility
JP5626860B2 (en) Waste melting furnace waste and secondary material charging equipment
JP2005265197A (en) Operation method for pyrolizing facility and pyrolizing facility
JP4770435B2 (en) Method and apparatus for cooling waste pyrolysis char
JP3809029B2 (en) Waste charging equipment for waste treatment furnace
JP2012045469A (en) Apparatus for discharging dust attached to dust collector, and method of discharging dust
CN203923115U (en) The air-lock device of rice husk vapourizing furnace
JP4026016B2 (en) Exhaust gas scale capture device
CN211694900U (en) Pyrolysis gasifier
JP3545566B2 (en) Vacuum refining equipment and vacuum refining method
JP2009165969A (en) Polluted soil detoxification system
JP2002168565A (en) Refuse dryer
JP2005257182A (en) Operating method for pyrolizing facility and pyrolizing facility
CN104764319B (en) Combined sealing device for rotary kiln
JP2528593Y2 (en) Prevention device for harmful gas leakage from pyrolysis furnace

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20111109

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130404

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130412

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130524

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20130705

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20130809

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20130910

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20131004

R150 Certificate of patent or registration of utility model

Ref document number: 5388278

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250