JPH0532978A - Device for protecting wall of gasification oven - Google Patents
Device for protecting wall of gasification ovenInfo
- Publication number
- JPH0532978A JPH0532978A JP18988791A JP18988791A JPH0532978A JP H0532978 A JPH0532978 A JP H0532978A JP 18988791 A JP18988791 A JP 18988791A JP 18988791 A JP18988791 A JP 18988791A JP H0532978 A JPH0532978 A JP H0532978A
- Authority
- JP
- Japan
- Prior art keywords
- water
- furnace
- refractory material
- wall
- boiler water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、耐火材からなる炉壁の
外周を断熱材で覆ったガス化炉に係り、特に耐火材の摩
耗度を検出することを可能にしたガス化炉の炉壁保護装
置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasification furnace in which a furnace wall made of a refractory material is covered with a heat insulating material, and in particular, a gasification furnace furnace capable of detecting the degree of wear of the refractory material. The present invention relates to a wall protection device.
【０００２】[0002]
【従来の技術】一般に、石炭をガス化する装置として
は、炭種の適用範囲が広く、灰分の取扱いが容易な噴流
床式ガス化炉が知られている。このガス化炉は、炉頂部
から石炭含有水スラリを酸素又は空気と共に高温の炉内
に噴射して石炭をガス化し、発生したガス化ガスを溶融
状態の灰分と共に炉底より排出させるものである。この
ガス化炉は、炉内が約1200〜1600℃の高温となるため
に、酸化クロム系の耐火材からなる炉壁によって炉が区
画形成されている。その炉壁の外周には断熱材が炉壁を
覆うように設けられて、炉内熱のシェルへの伝熱を低減
している。2. Description of the Related Art Generally, as a device for gasifying coal, a jet bed gasifier having a wide range of application of coal species and easy handling of ash is known. In this gasification furnace, a coal-containing water slurry is injected from the furnace top into a high-temperature furnace together with oxygen or air to gasify the coal, and the generated gasification gas is discharged from the furnace bottom together with molten ash. .. Since this furnace has a high temperature of about 1200 to 1600 ° C., the furnace is partitioned by a furnace wall made of a chromium oxide-based refractory material. A heat insulating material is provided on the outer circumference of the furnace wall so as to cover the furnace wall to reduce heat transfer to the shell.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上述のガス
化炉にあっては、炉内壁を溶融状態の灰分が流下するた
めに、耐火材が長くて１年程度で摩耗するので、所定の
位置に熱電対を設けて耐火材の状態を点検していた。し
かし、耐火材は均一に摩耗することはほとんどないため
に、熱電対によって点検できない局部で耐火材の摩耗が
激しいと、シェルとの厚さが薄くなるので、その箇所の
シェルの温度（通常約 200℃）が異常に高くなり、外気
温度があがると共に、シェルの温度が設計温度（約 400
〜500 ℃）以上になるとシェルが破損する虞があった。By the way, in the above-mentioned gasification furnace, since the ash in a molten state flows down the inner wall of the furnace, the refractory material is worn for a long time of about one year. A thermocouple was installed at the to check the condition of the refractory material. However, since the refractory material rarely wears evenly, if the refractory material is heavily worn locally by a thermocouple that cannot be inspected, the thickness of the shell and the shell will be reduced. 200 ℃) becomes abnormally high, the outside air temperature rises, and the shell temperature rises to the design temperature (about 400 ℃).
At temperatures above ~ 500 ° C, the shell could be damaged.
【０００４】そこで、本発明は、上記課題を解決すべく
なされたものであり、耐火材の摩耗度を検出することを
可能にしたガス化炉の炉壁保護装置を提供することを目
的とする。Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a furnace wall protection device for a gasification furnace capable of detecting the degree of wear of a refractory material. ..
【０００５】[0005]
【課題を解決するための手段】本発明は、上記目的を達
成するために、耐火材からなる炉壁の外周を断熱材で覆
ったガス化炉において、上記断熱材の内部に、炉壁を覆
うように水管群からなる水冷壁を設けると共に、この水
冷壁にボイラ水供給手段を接続し、上記水冷壁のボイラ
水出入口間に、出入口間の圧力差を検出すると共にその
圧力差から上記炉壁の摩耗度を検出する摩耗検出手段を
設けたものである。In order to achieve the above object, the present invention provides a gasification furnace in which the outer periphery of a furnace wall made of a refractory material is covered with a heat insulating material, and the furnace wall is provided inside the heat insulating material. A water cooling wall consisting of a group of water pipes is provided to cover the water cooling wall, and a boiler water supply means is connected to the water cooling wall to detect a pressure difference between the inlet and outlet of the boiler water of the water cooling wall and to detect the pressure difference from the furnace. A wear detecting means for detecting the degree of wear of the wall is provided.
【０００６】[0006]
【作用】上記構成によれば、耐火材が摩耗してその箇所
の断熱材の温度が高くなっても、水冷壁によって断熱材
が冷却されるために、断熱材の外部の温度が異常に高く
なることがない。また、耐火材が摩耗していない場合、
水冷壁のボイラ水出入口間の圧力差が小さいが、耐火材
が摩耗している場合、圧力差が大きくなるために、摩耗
検出手段によりその圧力差から水冷壁への入熱を検出す
れば、炉壁の摩耗度を検出することができる。According to the above construction, even if the refractory material is worn and the temperature of the heat insulating material at that location becomes high, the temperature outside the heat insulating material is abnormally high because the water cooling wall cools the heat insulating material. Never be. Also, if the refractory material is not worn,
Although the pressure difference between the boiler water inlet and outlet of the water cooling wall is small, if the refractory material is worn, the pressure difference becomes large, so if the wear detecting means detects the heat input to the water cooling wall from the pressure difference, It is possible to detect the degree of wear of the furnace wall.
【０００７】[0007]
【実施例】以下、本発明の一実施例を添付図面に基づい
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.
【０００８】図１において、１は水スラリ中の石炭を酸
素又は空気により部分酸化してガス化するガス化炉を示
し、炉１内温度が約1200〜1600℃に維持されるようにな
っている。In FIG. 1, reference numeral 1 denotes a gasification furnace for partially oxidizing coal in water slurry with oxygen or air to gasify it, and the temperature inside the furnace 1 is maintained at about 1200 to 1600 ° C. There is.
【０００９】炉１内は、酸化クロム系の耐火材２からな
る炉壁によって上部と下部がそれぞれ縮径された円柱状
に区画形成されている。その耐火材２の外周には、耐火
材２を覆うようにアルミナ系のレンガの断熱材３が設け
られ、この断熱材３によって炉１内熱のシェル４への伝
熱を低減させるようになっている。そのシェル４は、炉
１内圧力が約20〜30atm になるためにその圧力に耐え得
るように形成されており、実質的にはシェル４から耐火
材２までが炉壁として形成されている。The inside of the furnace 1 is formed by a furnace wall made of a chromium oxide refractory material 2 in the shape of a cylinder whose upper and lower parts are reduced in diameter. Alumina-based brick heat insulating material 3 is provided on the outer periphery of the refractory material 2 so as to cover the refractory material 2. The heat insulating material 3 reduces heat transfer from the heat in the furnace 1 to the shell 4. ing. The shell 4 is formed so as to withstand the pressure because the pressure in the furnace 1 becomes about 20 to 30 atm, and substantially the shell 4 to the refractory material 2 are formed as a furnace wall.
【００１０】上記断熱材３の内部には、耐火材２を覆う
ように水管５群からなる水冷壁６が設けられている。こ
の水冷壁６は、炉１内が高温になると、耐火材２とシェ
ル４との間に表れる温度勾配を利用して、水管５に供給
するボイラ水とほぼ等しい温度（約 400℃）の断熱材３
内に配置され、耐火材がほとんど摩耗してしない通常の
場合、ボイラ水と断熱材３の熱が出入りしないようにな
っている。水管５群は、具体的には、図１〜図３に示す
ように、リング状のリング水管５ａが、炉１が縮径され
ている上部及び下部付近の外周にそれぞれ配設されてい
ると共に、これらリング水管５ａを掛渡すように複数の
水管５が周方向に沿って所定間隔を隔てて配設されてい
る。また、下部のリング水管５ａにはボイラ水導入口７
が設けられていると共に、上部のリング水管５ａにはボ
イラ水排出口８が設けられている。Inside the heat insulating material 3, a water cooling wall 6 composed of a group of water pipes 5 is provided so as to cover the refractory material 2. When the temperature inside the furnace 1 becomes high, the water cooling wall 6 uses a temperature gradient that appears between the refractory material 2 and the shell 4 to insulate the boiler water supplied to the water pipe 5 at a temperature approximately equal to that of the boiler water (about 400 ° C.). Material 3
In a normal case, in which the refractory material is hardly worn, the heat of the boiler water and the heat of the heat insulating material 3 are prevented from flowing in and out. Specifically, as shown in FIGS. 1 to 3, the group of water pipes 5 includes ring-shaped ring water pipes 5a arranged on the outer periphery of the upper and lower portions of the furnace 1 where the diameter is reduced. A plurality of water pipes 5 are arranged at predetermined intervals along the circumferential direction so as to bridge the ring water pipes 5a. The lower ring water pipe 5a has a boiler water inlet 7
Is provided, and a boiler water discharge port 8 is provided in the upper ring water pipe 5a.
【００１１】上記ボイラ水導入口７には、第４図に示す
ように、ボイラ（図示せず）のスチームドラム９内のボ
イラ水（飽和水）を供給するためのボイラ水供給手段１
０を構成するボイラ水供給管１１が接続されている。こ
のボイラ水供給管１１は、スチームドラム９内のボイラ
水をボイラ水循環ポンプ１２によりボイラに供給する配
管１３に接続され、バルブ１４とそのバルブ１４を制御
する流量計１５を有している。それらバルブ１４及び流
量計１５によって導入口７に供給されるボイラ水の流量
が一定になるようになっている。また、ボイラ水排出口
８には、温度計１６を有するボイラ水管１７が接続さ
れ、このボイラ水管１７は上記スチームドラム９に接続
されている。さらに、ボイラ水出入口７，８付近のボイ
ラ水供給管１１とボイラ水管１７との間には、摩耗検出
手段１８を構成する摩耗検出装置１９が設けられてい
る。この検出装置１９は、ボイラ水供給管１１とボイラ
水管１７との圧力差を検出すると共に、その圧力差から
上記耐火材３の摩耗度を検出するように構成されてい
る。また、検出装置１９には、記録計２０が接続され、
この記録計２０は、検出装置１９で検出した圧力差を記
録すると共に圧力差が大きくなり耐火材２が限界になる
と警報を出すようになっている。As shown in FIG. 4, a boiler water supply means 1 for supplying boiler water (saturated water) in a steam drum 9 of a boiler (not shown) to the boiler water inlet 7.
Boiler water supply pipe 11 constituting 0 is connected. The boiler water supply pipe 11 is connected to a pipe 13 for supplying the boiler water in the steam drum 9 to the boiler by a boiler water circulation pump 12, and has a valve 14 and a flow meter 15 for controlling the valve 14. The flow rate of the boiler water supplied to the inlet 7 is made constant by the valve 14 and the flow meter 15. A boiler water pipe 17 having a thermometer 16 is connected to the boiler water discharge port 8, and the boiler water pipe 17 is connected to the steam drum 9. Further, between the boiler water supply pipe 11 and the boiler water pipe 17 near the boiler water inlets / outlets 7 and 8, a wear detecting device 19 constituting a wear detecting means 18 is provided. The detection device 19 is configured to detect the pressure difference between the boiler water supply pipe 11 and the boiler water pipe 17, and to detect the degree of wear of the refractory material 3 from the pressure difference. Further, a recorder 20 is connected to the detection device 19,
The recorder 20 records the pressure difference detected by the detection device 19 and issues an alarm when the pressure difference becomes large and the refractory material 2 reaches its limit.
【００１２】次に本実施例の作用を説明する。Next, the operation of this embodiment will be described.
【００１３】炉１運転時、図１及び図４に示すように、
ボイラ（図示せず）のスチームドラム９内のボイラ水
（飽和水）の一部がボイラ水循環ポンプ１２により配管
１３、ボイラ水供給管１１及びボイラ水導入口７を介し
て下部のリング水管５ａに供給される。供給されたボイ
ラ水は、リング水管５ａから複数の水管５内を上昇して
上部のリング水管５ａに流れ、そこからボイラ水排出口
８及びボイラ水管１７を介してスチームドラム９に戻さ
れる。During operation of the furnace 1, as shown in FIGS. 1 and 4,
A part of the boiler water (saturated water) in the steam drum 9 of the boiler (not shown) is transferred to the lower ring water pipe 5a by the boiler water circulation pump 12 through the pipe 13, the boiler water supply pipe 11 and the boiler water inlet 7. Supplied. The supplied boiler water ascends from the ring water pipe 5a to the inside of the plurality of water pipes 5 and flows to the upper ring water pipe 5a, and from there, is returned to the steam drum 9 via the boiler water discharge port 8 and the boiler water pipe 17.
【００１４】このとき、耐火材２がほとんど摩耗してい
ない通常の場合は、水管５内のボイラ水と水冷壁６付近
の断熱材３の温度がほぼ等しいために、ボイラ水と断熱
材３の熱の出入りがほとんどない。また、耐火材２が摩
耗した場合は、その箇所の耐火材２の厚さが薄くなるた
めに、水冷壁６付近の断熱材３の温度が通常より高くな
るが、その熱を水管５内のボイラ水が吸収するので、断
熱材３が冷却されることになる。このように、耐火材２
が摩耗して断熱材３の温度が高くなっても、水管５群か
らなる水冷壁６によって冷却されることにより、水冷壁
６の外部の温度が異常に高くなることがなくなり、シェ
ル４が水冷壁６によって保護されることになる。したが
って、耐火材２が局部で摩耗したり脱落したりして、局
部的に断熱材３の温度が高くなっても、断熱材３が水冷
壁６によって冷却されるために、シェル４が高温に晒さ
れず、炉１運転をある程度安全に継続できるので、必要
な時期に耐火材２の張替えを行える。At this time, in a normal case where the refractory material 2 is hardly worn, the temperature of the boiler water in the water pipe 5 and the temperature of the heat insulating material 3 near the water cooling wall 6 are almost equal, so that the boiler water and the heat insulating material 3 are Almost no heat goes in or out. Further, when the refractory material 2 is worn, the temperature of the heat insulating material 3 near the water cooling wall 6 becomes higher than usual because the thickness of the refractory material 2 at that portion becomes thin. Since the boiler water is absorbed, the heat insulating material 3 is cooled. In this way, refractory material 2
Even if the temperature of the heat insulating material 3 rises due to wear, the temperature of the outside of the water cooling wall 6 does not become abnormally high by being cooled by the water cooling wall 6 composed of the water pipes 5, and the shell 4 is cooled by the water cooling. It will be protected by the wall 6. Therefore, even if the refractory material 2 locally wears or falls off and the temperature of the heat insulating material 3 locally rises, the heat insulating material 3 is cooled by the water cooling wall 6, so that the shell 4 is heated to a high temperature. Since the furnace 1 operation can be continued to some extent safely without being exposed, the refractory material 2 can be replaced at a necessary time.
【００１５】また、通常の場合は、水冷壁６の出入口間
の圧力差が小さいが、摩耗した場合は、断熱材３を水冷
壁６によって冷却するために、水冷壁６への入熱が増加
して水管５内のボイラ水（飽和水）が蒸発するので、上
記圧力差が大きくなる。このため、摩耗検出装置１９で
ボイラ水の出入口７，８付近のボイラ水供給管１１とボ
イラ水管１７との圧力差を検出し、この圧力差と通常時
の圧力差からボイラ水への入熱を検出することにより、
その入熱により耐火材２の摩耗度を検出することができ
る。さらに、摩耗検出装置１９の記録計２０で上記圧力
差を記録しておけば、耐火材２の摩耗の度合及び摩耗す
る時期を検出すると共に、圧力差が極端に変わることに
より耐火材２の脱落を検出することができる。また、耐
火材２が摩耗したり、脱落して限界になると、上記圧力
差が大きくなり、記録計２０が警報を出すために、耐火
材２の張替え時期が分かる。In the normal case, the pressure difference between the inlet and outlet of the water cooling wall 6 is small, but when worn, the heat insulating material 3 is cooled by the water cooling wall 6, so the heat input to the water cooling wall 6 increases. Since the boiler water (saturated water) in the water pipe 5 evaporates, the pressure difference becomes large. Therefore, the wear detector 19 detects the pressure difference between the boiler water supply pipe 11 and the boiler water pipe 17 near the boiler water inlets / outlets 7 and 8, and the heat input to the boiler water is calculated from this pressure difference and the pressure difference at the normal time. By detecting
The degree of wear of the refractory material 2 can be detected by the heat input. Further, if the pressure difference is recorded by the recorder 20 of the wear detecting device 19, the degree of wear and the time of wear of the refractory material 2 are detected, and the refractory material 2 falls off due to the extreme pressure difference. Can be detected. Further, when the refractory material 2 becomes worn or drops off and reaches the limit, the pressure difference becomes large, and the recorder 20 gives an alarm, so that it is possible to know when the refractory material 2 should be replaced.
【００１６】[0016]
【発明の効果】以上要するに本発明によれば、断熱材の
内部に水冷壁を設けると共に、水冷壁のボイラ水出入口
間に摩耗検出手段を設けたので、耐火材の摩耗度を検出
できるという優れた効果を発揮する。In summary, according to the present invention, the water cooling wall is provided inside the heat insulating material, and the wear detecting means is provided between the water inlet and outlet of the boiler of the water cooling wall, so that the wear degree of the refractory material can be detected. Exerts the effect.
【図１】本発明の水冷壁の状態を示す概略断面図であ
る。FIG. 1 is a schematic cross-sectional view showing a state of a water cooling wall of the present invention.
【図２】図１のII−II線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】図１の要部拡大図である。FIG. 3 is an enlarged view of a main part of FIG.
【図４】本発明のボイラ水供給手段及び摩耗検出手段を
示す構成図である。FIG. 4 is a configuration diagram showing boiler water supply means and wear detection means of the present invention.
２ 耐火材 ３ 断熱材 ５ 水管 ６ 水冷壁 ７ ボイラ水導入口 ８ ボイラ水排出口 １０ ボイラ水供給手段 １８ 摩耗検出手段 2 Refractory material 3 Thermal insulation material 5 Water pipe 6 Water cooling wall 7 Boiler water inlet 8 Boiler water outlet 10 Boiler water supply means 18 Wear detection means
───────────────────────────────────────────────────── フロントページの続き (72)発明者 辻本 誠太郎 東京都江東区豊洲三丁目２番16号 石川島 播磨重工業株式会社豊洲総合事務所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seitaro Tsujimoto 3-2-16 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Toyosu General Office
Claims (1)
ったガス化炉において、上記断熱材の内部に、炉壁を覆
うように水管群からなる水冷壁を設けると共に、該水冷
壁にボイラ水供給手段を接続し、上記水冷壁のボイラ水
出入口間に、出入口間の圧力差を検出すると共にその圧
力差から上記炉壁の摩耗度を検出する摩耗検出手段を設
けたことを特徴とするガス化炉の炉壁保護装置。Claim: What is claimed is: 1. A gasification furnace in which a furnace wall made of a refractory material is covered with a heat insulating material, and a water cooling wall made of a water pipe group is provided inside the heat insulating material so as to cover the furnace wall. Abrasion detection means for connecting the boiler water supply means to the water cooling wall, detecting a pressure difference between the inlet and the outlet of the water cooling wall, and detecting the degree of wear of the furnace wall from the pressure difference. A furnace wall protection device for a gasification furnace, characterized by being provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18988791A JPH0532978A (en) | 1991-07-30 | 1991-07-30 | Device for protecting wall of gasification oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18988791A JPH0532978A (en) | 1991-07-30 | 1991-07-30 | Device for protecting wall of gasification oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0532978A true JPH0532978A (en) | 1993-02-09 |
Family
ID=16248846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18988791A Pending JPH0532978A (en) | 1991-07-30 | 1991-07-30 | Device for protecting wall of gasification oven |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532978A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101516622B1 (en) * | 2014-07-29 | 2015-05-04 | 현대제철 주식회사 | Methods for predicting the thickness of copper stave in blast furnace |
| US9335081B2 (en) | 2011-10-04 | 2016-05-10 | Lg Electronics Inc. | Ice maker and ice making method using the same |
| USRE49919E1 (en) * | 2013-01-02 | 2024-04-16 | Lg Electronics Inc. | Ice maker |
-
1991
- 1991-07-30 JP JP18988791A patent/JPH0532978A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9335081B2 (en) | 2011-10-04 | 2016-05-10 | Lg Electronics Inc. | Ice maker and ice making method using the same |
| USRE49919E1 (en) * | 2013-01-02 | 2024-04-16 | Lg Electronics Inc. | Ice maker |
| KR101516622B1 (en) * | 2014-07-29 | 2015-05-04 | 현대제철 주식회사 | Methods for predicting the thickness of copper stave in blast furnace |
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