WO2014061453A1 - 流動床燃焼炉 - Google Patents
流動床燃焼炉 Download PDFInfo
- Publication number
- WO2014061453A1 WO2014061453A1 PCT/JP2013/076846 JP2013076846W WO2014061453A1 WO 2014061453 A1 WO2014061453 A1 WO 2014061453A1 JP 2013076846 W JP2013076846 W JP 2013076846W WO 2014061453 A1 WO2014061453 A1 WO 2014061453A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluidized bed
- furnace
- protective tube
- thermometer
- fluidized
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/28—Control devices specially adapted for fluidised bed, combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M11/00—Safety arrangements
- F23M11/04—Means for supervising combustion, e.g. windows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M5/00—Casings; Linings; Walls
- F23M5/02—Casings; Linings; Walls characterised by the shape of the bricks or blocks used
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2900/00—Special features of, or arrangements for controlling combustion
- F23N2900/05005—Mounting arrangements for sensing, detecting or measuring devices
Definitions
- the present invention relates to a fluidized bed combustion furnace.
- fluidized bed furnaces are known in which fuel such as coal is mixed with a fluidized material such as silica sand and the fuel is combusted while forming a fluidized bed (fluidized bed) in which the fluid flows in a combustion chamber.
- a thermometer is installed to accurately grasp the temperature of the combustion chamber. This thermometer is arranged so that it passes through the furnace wall forming the combustion chamber and the measurement part is covered with a protective tube made of a material such as stainless steel and protrudes into the furnace.
- thermometer In the fluidized bed furnace, since the fluidized material repeatedly descends along the furnace wall, the fluidized material comes into contact (impacts) with the protective tube protruding into the furnace, and the protective tube is worn. Then, for example, disconnection or the like occurs due to such wear of the protective tube, and the accurate temperature cannot be grasped. As a result, frequent replacement of the thermometer is required.
- the material of the protective tube is made of ceramics having excellent wear resistance, and the life of the thermometer is extended.
- thermometer described in Patent Document 1 has a problem that ceramics are expensive.
- the present invention has been made to solve such a problem, including a fluidized bed furnace capable of extending the life of a thermometer even if the protective tube is made of a low-cost material similar to the conventional one.
- An object is to provide a fluidized bed combustion furnace.
- the fluidized bed combustion furnace includes a combustion chamber that combusts the raw material while forming a fluidized bed in which the raw material and the fluidized material flow, and a thermometer for measuring the temperature of the combustion chamber passes through the furnace wall and measures the temperature.
- a refractory protrusion protruding into the furnace is provided above the protective tube on the inner surface of the furnace wall.
- the refractory projection is provided so as to cover the protective tube, the contact of the fluidized material with the protective tube can be further avoided, and the wear of the protective tube can be further reduced, resulting in a long life of the thermometer. Can be further improved.
- the upper surface of the refractory projection has an inclined surface that is inclined so as to guide the falling fluid material to the center side in the furnace, the falling fluid material follows this inclined surface. Actively approached to the center of the furnace. For this reason, the fluidized material can be easily returned to the fluidized bed, and at the same time, contact of the fluidized material with the protective tube can be further avoided. As a result, the wear of the protective tube can be further reduced, and the lifetime of the thermometer can be further increased.
- raw material that exhibits the above-described action
- specific examples of the raw material that exhibits the above-described action include coal, biomass, and waste tires.
- FIG. 1 It is a schematic sectional lineblock diagram showing an important section of a fluidized bed combustion furnace concerning a 1st embodiment of the present invention. It is the figure which looked at the principal part of the fluidized-bed combustion furnace shown in FIG. 1 from the furnace inner side. It is an enlarged view which shows the thermometer and refractory protrusion part in FIG. 1 with a furnace wall. It is a schematic sectional block diagram which shows the principal part of the fluidized-bed combustion furnace which concerns on 2nd Embodiment of this invention.
- FIG. 1 is a schematic cross-sectional configuration diagram showing the main part of a fluidized bed combustion furnace according to the first embodiment of the present invention
- FIG. 2 is a view of the main part of the fluidized bed combustion furnace as seen from the inside of the furnace
- FIG. It is an enlarged view which shows a thermometer and a refractory protrusion part with a furnace wall, and this fluidized-bed combustion furnace is a fluidized-bed boiler here, and is used for a power station.
- the fluidized bed boiler 100 generally has a rectangular cylindrical furnace whose upper and lower ends are closed, and its lower part narrows in the width direction (left and right direction in FIG. 1) as it goes downward, so that a rectangular cylinder is formed. The shape is reduced.
- the furnace wall 1 is a combustion chamber 2, and a fluidized material such as silica sand is previously stored in the combustion chamber 2 for the purpose of promoting complete combustion, and a plurality of fluidized bed boilers 100 are provided at the bottom of the combustion chamber 2.
- Combustion air is introduced into the combustion chamber 2 through the opening 3 and fuel such as coal and biomass is introduced into the lower portion of the combustion chamber 2 from the outside, and a fluidized bed is formed while these are flowing to burn the fuel. is there.
- the furnace wall 1 of the fluidized bed boiler 100 connects water wall tubes (water pipes) 4, 4 arranged in parallel in the furnace wall circumferential direction (left and right direction in the figure) with flat fins 5.
- the so-called membrane panel 15 is provided.
- the water wall tube 4 exchanges heat generated in the combustion chamber 2 with water flowing in the water wall tube 4 and converts it into water vapor.
- the furnace wall 1 has an upper furnace wall A from which the membrane panel 15 is exposed, and a refractory 6 set under the upper furnace wall A. And the lower furnace wall B on which the membrane panel 15 is covered.
- the refractory 6 is a refractory lining formed of an irregular refractory.
- thermometer 7 for measuring the temperature of the combustion chamber 2 is installed.
- the thermometer 7 passes through the fins 5 and the refractory 6 constituting the lower furnace wall B, and is arranged so that the measurement part is covered with a protective tube 9 made of a material such as stainless steel and protrudes into the furnace. .
- a refractory projection 10 that protrudes into the furnace is provided on the inner surface of the furnace wall B above the protective tube 9 of the thermometer 7.
- the refractory projection 10 has a shape in which a part of the refractory 6 constituting the furnace wall B is expanded (projected) in an umbrella shape.
- the refractory protrusion 10 has a triangular shape in a side view, and its upper surface guides the fluidized material falling along the furnace walls A and B to the center side in the furnace. It is set as the structure which has the inclined surface 11 which inclines with a downward slope toward the furnace inner side. And the refractory projection part 10 is provided so that the front-end
- the fluidized bed boiler 100 having such a configuration, fuel is combusted in the combustion chamber 2, and the generated heat is transmitted to the water wall tube 4 for heat exchange.
- the combustion gas generated by the combustion is discharged from the upper part of the furnace to the subsequent stage, and the fluidized material containing ash descends along the furnace walls A and B in the furnace, and this is repeated.
- the refractory protrusion 10 protruding into the furnace is provided on the inner surface of the furnace wall B above the protective tube 9, the refractory protrusion 10 causes the furnace wall.
- the contact of the fluid material falling along B with the protective tube 9 can be avoided, and wear of the protective tube 9 can be reduced.
- the protective tube 9 is made of a low-cost material such as stainless steel, for example.
- the refractory projection 10 is provided so as to cover the protective tube 9, contact of the fluidized material with the protective tube 9 can be further avoided, and wear of the protective tube 9 can be further reduced. 7 can be further extended in life.
- the upper surface of the refractory projection 10 has an inclined surface 11 that inclines so as to guide the falling fluid to the center side in the furnace, it falls according to the inclined surface 11.
- the fluidized material is actively brought to the center side in the furnace. For this reason, the fluidized material can be easily returned to the fluidized bed, and at the same time, contact of the fluidized material with the protective tube 9 can be further avoided. As a result, the wear of the protective tube 9 can be further reduced, and the lifetime of the thermometer 7 can be further increased.
- FIG. 4 is a schematic cross-sectional configuration diagram showing a main part of a fluidized bed combustion furnace according to a second embodiment of the present invention.
- the second embodiment is different from the first embodiment in that the thermometer 7 is installed so as to penetrate the fin 5 of the membrane panel 15 which is the upper furnace wall A and is not covered with the refractory 6. Accordingly, the refractory projection 10 is provided above the protective tube 9 of the thermometer 7 on the inner surface of the upper furnace wall A (membrane panel 15).
- the refractory projection 10 can avoid the fluid material falling along the furnace wall A from contacting the protective tube 9, the same effect as the first embodiment can be obtained. Obtainable.
- the present invention has been specifically described based on the embodiment.
- the present invention is not limited to the above embodiment.
- the shape of the refractory protrusion 10 is particularly preferable.
- a shape such as a side view trapezoid may be used.
- the combustion target is a fuel that generates heat, but it may be, for example, waste for incineration such as waste tires and garbage, and the main point is combustion including fuel and waste. Any material can be used.
- a fluidized bed boiler is described, but it can also be applied to a circulating fluidized bed boiler that is provided with a cyclone and returns ash such as combustion ash and unburned ash to the fluidized bed, Furthermore, the present invention can also be applied to a fluidized bed furnace that does not have a water pipe for heat exchange in the furnace. Applicable to all fluidized bed combustion furnaces.
- the life of the thermometer can be extended even if the protective tube is made of the same inexpensive material as the conventional one.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
Description
Claims (4)
- 原料及び流動材が流動する流動床を形成しながら前記原料を燃焼する燃焼室を備え、前記燃焼室の温度を測定するための温度計が炉壁を貫通しその測定部が保護管に覆われて炉内に突出する流動床燃焼炉において、
前記炉壁の内面で前記保護管の上方に、炉内に突出する耐火物突起部を有する流動床燃焼炉。 - 前記耐火物突起部は、前記保護管を覆うように設けられている請求項1記載の流動床燃焼炉。
- 前記耐火物突起部の上面は、落下してくる前記流動材を炉内の中心側に案内するように傾斜する傾斜面を有する請求項1又は2記載の流動床燃焼炉。
- 前記原料は、石炭、又は、バイオマス、又は、廃タイヤである請求項1~3の何れか一項に記載の流動床燃焼炉。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI2015000800A MY182554A (en) | 2012-10-16 | 2013-10-02 | Fluidized bed combustor |
PH12015500769A PH12015500769B1 (en) | 2012-10-16 | 2015-04-07 | Fluidized bed combustor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012228937A JP6000795B2 (ja) | 2012-10-16 | 2012-10-16 | 流動床燃焼炉 |
JP2012-228937 | 2012-10-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014061453A1 true WO2014061453A1 (ja) | 2014-04-24 |
Family
ID=50488024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/076846 WO2014061453A1 (ja) | 2012-10-16 | 2013-10-02 | 流動床燃焼炉 |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6000795B2 (ja) |
MY (1) | MY182554A (ja) |
PH (1) | PH12015500769B1 (ja) |
WO (1) | WO2014061453A1 (ja) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55162136U (ja) * | 1979-05-10 | 1980-11-20 | ||
JPH06257952A (ja) * | 1993-03-03 | 1994-09-16 | Babcock Hitachi Kk | 炉壁冷却装置 |
JP2000046657A (ja) * | 1998-07-30 | 2000-02-18 | Kawasaki Heavy Ind Ltd | 流動層炉の温度測定装置 |
JP2000274630A (ja) * | 1999-03-24 | 2000-10-03 | Tokyo Gas Co Ltd | 流動床焼却炉 |
JP2011141089A (ja) * | 2010-01-07 | 2011-07-21 | Sumitomo Heavy Ind Ltd | 流動床反応炉 |
-
2012
- 2012-10-16 JP JP2012228937A patent/JP6000795B2/ja active Active
-
2013
- 2013-10-02 WO PCT/JP2013/076846 patent/WO2014061453A1/ja active Application Filing
- 2013-10-02 MY MYPI2015000800A patent/MY182554A/en unknown
-
2015
- 2015-04-07 PH PH12015500769A patent/PH12015500769B1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55162136U (ja) * | 1979-05-10 | 1980-11-20 | ||
JPH06257952A (ja) * | 1993-03-03 | 1994-09-16 | Babcock Hitachi Kk | 炉壁冷却装置 |
JP2000046657A (ja) * | 1998-07-30 | 2000-02-18 | Kawasaki Heavy Ind Ltd | 流動層炉の温度測定装置 |
JP2000274630A (ja) * | 1999-03-24 | 2000-10-03 | Tokyo Gas Co Ltd | 流動床焼却炉 |
JP2011141089A (ja) * | 2010-01-07 | 2011-07-21 | Sumitomo Heavy Ind Ltd | 流動床反応炉 |
Also Published As
Publication number | Publication date |
---|---|
MY182554A (en) | 2021-01-25 |
PH12015500769A1 (en) | 2015-06-08 |
PH12015500769B1 (en) | 2015-06-08 |
JP2014081129A (ja) | 2014-05-08 |
JP6000795B2 (ja) | 2016-10-05 |
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