【発明の詳細な説明】（産業上の利用分野〕本発明は、微粉炭、微粉オイルコークスなどの固体燃料
（以下、単に石炭という）を燃焼用旋回空気により燃焼
させるサイクロン石炭燃焼炉における排ガスの脱硫方法
およびその装置に関するものである。Detailed Description of the Invention (Industrial Field of Application) The present invention is a method for reducing exhaust gas in a cyclone coal combustion furnace in which solid fuel such as pulverized coal or pulverized oil coke (hereinafter simply referred to as coal) is combusted by swirling air for combustion. This invention relates to a desulfurization method and apparatus.
従来から、ボイラ火炉などの工業炉においては、炉本体
に前炉（−火炉）としてサイクロン石炭燃焼炉を設けて
石炭を部分燃焼させるようにしたものが知られている。BACKGROUND ART Conventionally, industrial furnaces such as boiler furnaces are known in which a cyclone coal combustion furnace is provided as a front furnace (-furnace) in the furnace body to partially burn coal.
このような前炉を備えた工業炉（二次炉）は、燃焼効果
が優れたものであることから、広く用いられている。Industrial furnaces (secondary furnaces) equipped with such forehearths are widely used because of their excellent combustion effects.
上記の従来型のサイクロン石炭燃焼炉の構造を示すもの
として、たとえば先に提案した実開昭６０７６７１７号
公報に示されるように、微粉炭と空気とをサイクロン石
炭燃焼炉内に供給するとともに、これらを高速旋回流と
して効果的に混合して燃焼させることにより、微粉炭を
部分燃焼させる構造のものが開示されている。すなわち
、第３図に示すように、ボイラ火炉などの火炉（二次炉
）１の側壁にサイクロン本体２を横方向に取り付け、こ
のサイクロン本体に石炭投入口３、燃焼用旋回空気供給
口４および燃焼ガスを火炉へ導くガス導通口５を設け、
サイクロン本体２の内部に、この本体２内で発生する燃
焼ガスを通過させ溶融スラグをせき止めるためのスラグ
バッフル６を設けるとともに、スラグバッフルの燃焼ガ
ス上流側に下向きのスラグ流下ロアを設けたサイクロン
石炭燃焼炉８が記載されている。１０はスラグタンク、
１１は燃焼室、１２はバイパスライン、１３は火炎であ
る。As an example of the structure of the conventional cyclone coal combustion furnace described above, as shown in the previously proposed Japanese Utility Model Application Publication No. 6076717, pulverized coal and air are supplied into the cyclone coal combustion furnace, and A structure is disclosed in which pulverized coal is partially combusted by effectively mixing and combusting pulverized coal as a high-speed swirling flow. That is, as shown in FIG. 3, a cyclone main body 2 is attached laterally to the side wall of a furnace (secondary furnace) 1 such as a boiler furnace, and a coal input port 3, a swirling air supply port 4 for combustion, and a combustion swirling air supply port 4 are attached to the cyclone main body. A gas passage port 5 is provided to guide combustion gas to the furnace,
The cyclone coal is provided with a slag baffle 6 inside the cyclone body 2 for passing combustion gas generated within the body 2 and damming up molten slag, and a downward slag flow lower lower on the combustion gas upstream side of the slag baffle. A combustion furnace 8 is described. 10 is a slag tank,
11 is a combustion chamber, 12 is a bypass line, and 13 is a flame.
〔発明が解決しようとする問題点〕上記のサイクロン燃焼炉において、燃焼排ガス中には、
燃料中の硫黄分に起因する硫黄化合物が含まれるので、
これを効率よく除去する必要がある。[Problems to be solved by the invention] In the above cyclone combustion furnace, the combustion exhaust gas contains:
Contains sulfur compounds caused by the sulfur content in fuel,
It is necessary to remove this efficiently.
従来、脱硫剤粉末は、微粉炭などの固体燃料搬送系統ま
たは燃焼用空気の系統に混入して、サイクロン石炭燃焼
炉に導入されていたが、この場合には、脱硫剤が局部的
に燃焼反応の盛んな極めて高温の酸化・還元雰囲気を通
過するため、脱硫性能の活性が劣化（死活）し易く、脱
硫効果を高めることが困難であった。Conventionally, desulfurization agent powder was introduced into a cyclone coal combustion furnace by being mixed into the solid fuel conveyance system such as pulverized coal or the combustion air system, but in this case, the desulfurization agent caused a local combustion reaction. Because it passes through an extremely high-temperature oxidizing/reducing atmosphere with a lot of carbon dioxide, the desulfurization activity tends to deteriorate (dead), making it difficult to increase the desulfurization effect.
本発明は上記の点に鑑みなされたもので、サイクロン石
炭燃焼炉からの燃焼ガスの一部を冷却した後、ブースタ
ポンプで昇圧し、これを搬送媒体として石灰石などの脱
硫剤の粉末をサイクロン石炭燃焼炉の燃焼ガス出口近傍
の高温還元ゾーンから分散・投入し、ＣａＳの生成量を
増大せしめ、脱硫性能の向上を図るようにしたサイクロ
ン石炭燃焼炉における脱硫方法およびその装置を提供す
ることを目的とするものである。The present invention was made in view of the above points. After cooling a part of the combustion gas from a cyclone coal combustion furnace, the pressure is increased by a booster pump, and this is used as a conveying medium to transfer powder of a desulfurization agent such as limestone to the cyclone coal combustion furnace. The purpose of the present invention is to provide a desulfurization method and device for a cyclone coal combustion furnace in which CaS is dispersed and introduced from a high temperature reduction zone near the combustion gas outlet of the combustion furnace to increase the amount of CaS produced and improve desulfurization performance. That is.
〔問題点を解決するための手段および作用〕上記の目的
を達成するために、本発明のサイクロン石炭燃焼炉にお
ける脱硫装置は、図面に示すように、二次炉１の側壁に
サイクロン本体２を横方向に取り付け、このサイクロン
本体に石炭投入口３、燃焼用旋回空気供給口４、燃焼ガ
スを二次炉へ導くガス導通口５およびスラグ流下ロアを
設けたサイクロン石炭燃焼炉８において、サイクロン石
炭燃焼炉８と火炉１との接続ダクト１４に分岐ダクト１
５を設け、この分岐ダクトを排ガスクーラ１６、ブース
タポンプ１７およびエジェクタ１８を介してサイクロン
石炭燃焼炉８のガス導通口５近傍の高温還元ゾーン２０
に接続し、エジェクタ１８に脱硫剤粉末ホッパ２１を接
続して形成したものである。２２はロータリバルブであ
る。[Means and operations for solving the problems] In order to achieve the above object, the desulfurization device for the cyclone coal combustion furnace of the present invention has a cyclone body 2 on the side wall of the secondary furnace 1, as shown in the drawings. In a cyclone coal combustion furnace 8 which is installed laterally and has a coal input port 3, a swirling air supply port 4 for combustion, a gas communication port 5 for guiding combustion gas to the secondary furnace, and a slag flow lower lower in the cyclone main body, the cyclone coal A branch duct 1 is connected to the connecting duct 14 between the combustion furnace 8 and the furnace 1.
5 is provided, and this branch duct is connected to a high temperature reduction zone 20 near the gas inlet 5 of the cyclone coal combustion furnace 8 via an exhaust gas cooler 16, a booster pump 17 and an ejector 18.
The desulfurizing agent powder hopper 21 is connected to the ejector 18. 22 is a rotary valve.
上記のように構成された装置において、サイクロン石炭
燃焼炉８からの燃焼ガスの一部を抜き出して冷却した後
、昇圧し、昇圧された燃焼ガスを搬送媒体として脱硫剤
粉末をサイクロン石炭燃焼炉のガス溝道口近傍の高温還
元ゾーン２０に分散・投入する。In the apparatus configured as described above, a part of the combustion gas from the cyclone coal combustion furnace 8 is extracted, cooled, and then pressurized, and the desulfurizing agent powder is transferred to the cyclone coal combustion furnace using the pressurized combustion gas as a carrier medium. It is dispersed and introduced into the high temperature reduction zone 20 near the gas ditch entrance.
分散・投入された脱硫剤粉末は、排ガス中の硫黄化合物
と効率よく反応してＣａＳとなり除去される。The dispersed and charged desulfurizing agent powder reacts efficiently with sulfur compounds in the exhaust gas to become CaS and is removed.
以下、図面を参照して本発明の好適な実施例を詳細に説
明する。ただしこの実施例に記載されている構成機器の
形状、その相対配置などは、とくに特定的な記載がない
限りは、本発明の範囲をそれらのみに限定する趣旨のも
のではなく、単なる説明例にすぎない。Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, unless there is a specific description, the shapes of the components described in this example, their relative positions, etc. are not intended to limit the scope of the present invention to these, but are merely illustrative examples. Only.
実施例１第１図は本発明の装置の一実施例を示している。Example 1FIG. 1 shows an embodiment of the device of the invention.
８は第３図に示すものと同じ構造のサイクロン石炭燃焼
炉で、この燃焼炉８と二次炉１との接続ダクト１４に分
岐ダクト１５を設け、この分岐ダクトを排ガスクーラ１
６、ブースタポンプ１７およびエジェクタ１８を介して
燃焼炉８のガス導道口５近傍の高温還元ゾーン２０に接
続している。またエジェクタ１８にはロータリバルブ２
２を介してＣａｃｔｓなどの脱硫剤の粉末を貯留する脱
硫剤粉末ホフバ２１が接続されている。Reference numeral 8 designates a cyclone coal combustion furnace having the same structure as that shown in FIG.
6. It is connected via a booster pump 17 and an ejector 18 to a high temperature reduction zone 20 near the gas conduit 5 of the combustion furnace 8. In addition, the ejector 18 has a rotary valve 2.
A desulfurizing agent powder hopper 21 that stores desulfurizing agent powder such as Cacts is connected via 2 .
分岐ダクト１５により抜き出された排ガスは、排ガスク
ーラ１６により冷却された後、ブースタポンプ１７で昇
圧され、エジェクタ１８に送られる。ロークリバルブ２
２を開とすると、ホッパ２１内の脱硫剤粉末がエジェク
タ１８内に吸引され、高温還元ゾーン２０に分散・投入
される。The exhaust gas extracted through the branch duct 15 is cooled by an exhaust gas cooler 16, then pressurized by a booster pump 17, and sent to an ejector 18. Low revalve 2
2 is opened, the desulfurizing agent powder in the hopper 21 is sucked into the ejector 18 and dispersed and thrown into the high temperature reduction zone 20.
実施例２本例は第２図に示すように、排ガスクーラ１６とブース
タポンプ１７との間にサイクロン２３を設けて、冷却後
の排ガス中のダストをサイクロン２３で除去し、ダスト
によるブースタポンプ１７、エジェクタ１８の摩耗、閉
塞などを防止するようにしたものである。他の構成、作
用は実施例１と同様である。Embodiment 2 In this example, as shown in FIG. 2, a cyclone 23 is provided between the exhaust gas cooler 16 and the booster pump 17, and the dust in the cooled exhaust gas is removed by the cyclone 23, and the booster pump 17 due to the dust is removed. , the ejector 18 is prevented from being worn out or blocked. Other configurations and operations are the same as in the first embodiment.
本発明は上記のように、サイクロン石炭燃焼炉からの還
元性の燃焼ガスの一部を冷却した後、昇圧し、これを搬
送媒体として脱硫剤粉末を燃焼炉の比較的均一な高温還
元ゾーンに分散・投入するように構成されているので、
活性を保ったままの脱硫剤粉末と排ガス中の硫黄化合物
とが高温雰囲気で効率よく接触し、このためＣａＳの生
成量が増大し、脱硫性能の向上を図ることができるとい
う効果を有している。As described above, the present invention cools a part of the reducing combustion gas from the cyclone coal combustion furnace, increases the pressure, and uses this as a carrier medium to transfer the desulfurizing agent powder to a relatively uniform high temperature reduction zone of the combustion furnace. Since it is configured to be distributed and input,
The desulfurizing agent powder, which remains active, and the sulfur compounds in the exhaust gas come into contact with each other efficiently in a high-temperature atmosphere, thereby increasing the amount of CaS produced and improving desulfurization performance. There is.
第１図は本発明のサイクロン石炭燃焼炉における脱硫装
置の一実施例を示す説明図、第２図は本発明の装置の他
の実施例を示す説明図、第３図は従来のサイクロン石炭
燃焼炉の一例を示す断面図である。１・・・火炉（二次炉）、２・・・サイクロン本体、３
・・・石炭投入口、４・・・燃焼用旋回空気供給口、５
・・・ガス導通口、６・・・スラグバッフル、７・・・
スラグ流下口、８・・・サイクロン石炭燃焼炉、１０・
・・スラグタンク、１１・・・燃焼室、１２・・・バイ
パスライン、１３・・・火炎、１４・・・接続ダクト、
１５・・・分岐ダクト、１６・・・排ガスクーラ、１７
・・・ブースタポンプ、１８・・・エジェクタ、２０・
・・高温還元ゾーン、２１・・・脱硫剤粉末ホッパ、２
２・・・ロータリバルブ、２３・・・サイクロンFig. 1 is an explanatory diagram showing one embodiment of the desulfurization device in a cyclone coal combustion furnace of the present invention, Fig. 2 is an explanatory diagram showing another embodiment of the device of the present invention, and Fig. 3 is an explanatory diagram showing a conventional cyclone coal combustion apparatus. It is a sectional view showing an example of a furnace. 1... Furnace (secondary furnace), 2... Cyclone body, 3
... Coal input port, 4... Combustion swirling air supply port, 5
...Gas communication port, 6...Slag baffle, 7...
Slag outlet, 8...Cyclone coal combustion furnace, 10.
...Slag tank, 11...Combustion chamber, 12...Bypass line, 13...Flame, 14...Connection duct,
15... Branch duct, 16... Exhaust gas cooler, 17
... Booster pump, 18... Ejector, 20.
・・High temperature reduction zone, 21 ・・Desulfurizing agent powder hopper, 2
2...Rotary valve, 23...Cyclone
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63176551AJP2528696B2 (en) | 1988-07-15 | 1988-07-15 | Desulfurization method and apparatus for cyclone coal combustion furnace |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63176551AJP2528696B2 (en) | 1988-07-15 | 1988-07-15 | Desulfurization method and apparatus for cyclone coal combustion furnace |
| Publication Number | Publication Date |
|---|---|
| JPH0225610Atrue JPH0225610A (en) | 1990-01-29 |
| JP2528696B2 JP2528696B2 (en) | 1996-08-28 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63176551AExpired - LifetimeJP2528696B2 (en) | 1988-07-15 | 1988-07-15 | Desulfurization method and apparatus for cyclone coal combustion furnace |
| Country | Link |
|---|---|
| JP (1) | JP2528696B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5649536A (en)* | 1994-02-25 | 1997-07-22 | Colin Corporation | Blood pressure measuring apparatus |
| US6045510A (en)* | 1994-02-25 | 2000-04-04 | Colin Corporation | Blood pressure measuring apparatus |
| WO2009054381A1 (en) | 2007-10-25 | 2009-04-30 | Terumo Kabushiki Kaisha | Blood pressure measuring device and method for controlling the blood pressure measuring device |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5649536A (en)* | 1994-02-25 | 1997-07-22 | Colin Corporation | Blood pressure measuring apparatus |
| US5836888A (en)* | 1994-02-25 | 1998-11-17 | Colin Corporation | Blood pressure measuring apparatus |
| US6045510A (en)* | 1994-02-25 | 2000-04-04 | Colin Corporation | Blood pressure measuring apparatus |
| US6413224B1 (en) | 1994-02-25 | 2002-07-02 | Colin Corporation | Blood pressure measuring apparatus |
| WO2009054381A1 (en) | 2007-10-25 | 2009-04-30 | Terumo Kabushiki Kaisha | Blood pressure measuring device and method for controlling the blood pressure measuring device |
| US8348851B2 (en) | 2007-10-25 | 2013-01-08 | Terumo Kabushiki Kaisha | Blood pressure measurement device and control method of the same |
| Publication number | Publication date |
|---|---|
| JP2528696B2 (en) | 1996-08-28 |
| Publication | Publication Date | Title |
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