WO2006075519A1 - 循環流動層燃焼装置の流動媒体循環量計測方法及び装置 - Google Patents
循環流動層燃焼装置の流動媒体循環量計測方法及び装置 Download PDFInfo
- Publication number
- WO2006075519A1 WO2006075519A1 PCT/JP2005/023855 JP2005023855W WO2006075519A1 WO 2006075519 A1 WO2006075519 A1 WO 2006075519A1 JP 2005023855 W JP2005023855 W JP 2005023855W WO 2006075519 A1 WO2006075519 A1 WO 2006075519A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- downcomer
- medium
- height position
- circulating
- fluid medium
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/007—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring the level variations of storage tanks relative to the time
-
- 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
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
-
- 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
- F23C10/30—Control devices specially adapted for fluidised bed, combustion apparatus for controlling the level of the bed or the amount of material in the bed
- F23C10/32—Control devices specially adapted for fluidised bed, combustion apparatus for controlling the level of the bed or the amount of material in the bed by controlling the rate of recirculation of particles separated from the flue gases
Definitions
- the present invention is used for recovering combustion heat generated during incineration of city garbage or industrial waste, or combustion of fuel such as trash derived fuel (RDF).
- the present invention relates to a method and an apparatus for measuring a circulating amount of a circulating medium in a circulating fluidized bed combustion apparatus.
- One of the types of power generation equipment is a circulating fluidized bed combustor, which is composed of primary air A blown from an air dispersion nozzle 2 as shown in FIG.
- Combustion furnace 1 in which waste as fuel such as fuel is combusted while being fluidized with bed material 3 that also has sand, limestone, etc., and generated by combustion in combustion furnace 1 connected to the top of combustion furnace 1
- the hot cyclone 4 as a medium separation device for collecting a fluid medium such as ash and sand contained in the exhaust gas, and the fluid medium collected by the hot cyclone 4 are introduced via the downcomer 5,
- External heat exchange 7 as an external recirculation unit that heats the fluidized medium and circulates it back to the bottom of the combustion furnace 1 through the fluidized medium return pipe 6 and exhaust gas in which the fluidized medium is collected by the hot cyclone 4 Is introduced inside It has a structure obtained by a heat recovery unit 10 and the heat sink 8 and economizer 9 is disposed.
- a gas air heater 12 is provided on the downstream side of the economizer 9 of the rear heat transfer unit 10 to heat the air pumped from the forced air blower 11 by the heat of the exhaust gas, and the gas air heater 12 heats the air.
- the secondary air line 14 From the side surface of the combustion furnace 1 through the secondary air line 14 branched from the primary air line 13 and supplied to the bottom of the combustion furnace 1 through the primary air line 13 as primary air A.
- the secondary air B is supplied, and the air fed from the flow air blower 15 is flowed to the bottom of the external heat exchanger 7 through the flow air line 18.
- Air C is supplied.
- a damper 16 for adjusting the flow rate of the primary air A is provided in the middle of the primary air line 13 on the downstream side of the branch portion of the secondary air line 14, and the secondary air B in the middle of the secondary air line 14.
- the external heat exchanger 7 forms a wind box 21 for blowing the flowing air C upward from the air dispersion nozzle 20 at the inner bottom of the seal box 19 to which the downcomer 5 is connected.
- a final superheater 22 for generating superheated steam by heat exchange with the fluidized medium and introducing it into the steam turbine is disposed in the seal box 19 above the nozzle 20.
- the external heat exchanger 7 is generally considered that the lower part of the down force marker 5 is material-sealed with a fluid medium and the pressure of the external heat exchanger 7 is higher than the pressure in the lower part of the combustion furnace 1.
- the exhaust gas in the combustion furnace 1 is prevented from flowing into the downcomer 5 side below the hot cyclone 4, and the fluid medium separated by the hot cyclone 4 is reliably allowed to flow down into the combustion furnace 1. It is shaped like a so-called siphon so that it can be returned.
- the air fed from the forced air blower 11 is heated by the gas air heater 12, and the combustion furnace 1 passes through the primary air line 13. Is supplied to the bottom of the furnace as primary air A, and is supplied as secondary air B from the side of the combustion furnace 1 via the secondary air line 14 branched from the primary air line 13, and is further pumped from the air blower 15 for flow.
- the exhaust gas generated by the combustion of the waste in the combustion furnace 1 is blown up together with a fluid medium such as ash or sand and introduced into the hot cyclone 4, where the fluid medium is collected.
- the fluid medium collected by the hot cyclone 4 is introduced from the downcomer 5 connected to the lower part of the hot cyclone 4 to the external heat exchanger 7 as an external recirculation unit. After the heat is removed, the fluid medium return pipe 6 It is returned to the bottom of the combustion furnace 1 and circulated.
- the boiler feed water is heated by the exhaust gas in the economizer 9, flows through the steam drum (not shown) in the furnace wall la of the combustion furnace 1, returns to the steam drum again, becomes saturated steam, and is overheated.
- the superheated steam introduced into the heater 8 and superheated by the exhaust gas and superheated in the superheater 8 is led to the final superheater 22 and further superheated by the fluid medium, and the superheated steam superheated in the final superheater 22 is It is introduced into a steam turbine to generate electricity.
- Patent Document 1 discloses a means for estimating the circulating amount of the fluid medium.
- Patent Document 1 Japanese Patent Laid-Open No. 2001-289406
- the present invention provides a very simple quantitative evaluation of the actual circulation amount of a fluid medium. It is intended to provide a method and apparatus for measuring the amount of circulating fluid in a circulating fluidized bed combustor that can improve the accuracy of comparison between the results of heat balance studied in simulations and the actual operation results.
- the exhaust gas derived from the combustion furnace is guided to the medium separation device to separate the fluidized medium, and the separated fluidized medium is supplied to the external recirculation unit via the downcomer.
- a method for measuring a circulating amount of a circulating fluidized bed combustion apparatus in which a fluidized medium supplied to a circulation unit is returned to the combustion furnace while being fluidized by flowing air, and the flow supplied to an external recirculation unit When the working air is stopped, the time for the fluid medium that accumulates in the downcomer to reach the upper predetermined height position from the lower reference height position is measured, and the fluid medium is deposited based on the time and the inner diameter of the downcomer.
- This is a method for measuring the circulating amount of the fluidized medium in the circulating fluidized bed combustor, in which the flow rate of the fluidized medium is determined as the amount of circulation.
- the fluidized medium circulation amount measuring method is as follows: the flow in which the light projected so as to cross the lower reference height position in the downcomer accumulates in the downcomer. By starting the timer when blocked by the medium, and stopping the timer when the light projected across the upper predetermined height position in the downcomer is blocked by the flowing medium that accumulates in the downcomer. In addition, it is possible to measure the time required for the fluid medium accumulated in the downcomer to reach the upper predetermined height position from the lower reference height position.
- the present invention also introduces the exhaust gas from which the combustion furnace power is derived to the medium separator to separate the fluid medium, and supplies the separated fluid medium to the external recirculation unit via the downcomer.
- the lower detection means for detecting that the fluid medium accumulated in the downcomer has reached the lower reference height position
- the external recirculation unit Upper detection means for detecting that the flowing medium accumulated in the downcomer has reached the upper predetermined height position when the supplied flow air is stopped, and detection from the lower detection means and the upper detection means Based on the signal, the time required for the fluid medium deposited in the downcomer to reach the upper predetermined height position from the lower reference height position is measured.
- Calculation means for determining the flow rate of the medium as the circulation amount
- It relates to a circulating medium circulating amount measuring device of a circulating fluidized bed combustion device comprising
- the lower light sensor receives the light projected so as to cross the lower reference height position in the downcomer.
- the upper detection means is configured by the upper optical sensor that receives the light projected so as to cross the upper predetermined height position in the downcomer and constitutes the lower reference height position in the downforcer.
- the timer of the computing means is started so as to cross the upper predetermined height position in the downcomer.
- the timer of the arithmetic unit is stopped, so that the flow that accumulates in the downcomer Medium as possible out be configured to measure the time to reach the lower standards heights force upper predetermined height position.
- the light projected so as to cross the lower reference height position and the upper predetermined height position in the downcomer into the downcomer above the lower light sensor and the upper light sensor It is desirable to arrange a roof member so that it is not blocked by the fluid medium flowing down.
- the actual circulating amount of the fluidized medium can be quantitatively evaluated very easily and examined by simulation or the like. It is possible to achieve an excellent effect that the accuracy of comparison between the result of the heat balance and the actual operation result can be improved.
- FIG. 1 is a plan view showing an example of a circulating medium circulating amount measuring method and apparatus of a conventional circulating fluidized bed combustion apparatus.
- FIG. 3 is a sectional view taken along line III-III in FIG.
- FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.
- FIGS. 2 to 4 show an embodiment of the present invention.
- the same reference numerals as those in FIG. 1 denote the same components, and the basic configuration is the same as the conventional one shown in FIG.
- the feature of this example is that the flowing air C (see Fig. 1) supplied to the external heat exchanger 7 as an external recirculation unit during the operation of the circulating fluidized bed combustion device.
- the fluidized medium When stopped, the fluidized medium will not be returned to the bottom of the combustion furnace 1 from the external heat exchanger 7 via the fluidized medium return pipe 6, so this phenomenon is utilized and as shown in FIGS.
- Lower detection means for detecting that the fluid medium accumulated in the downcomer 5 has reached the lower reference height position H when the flow air C supplied to the external heat exchanger 7 is stopped.
- Upper detection means for detecting that the flow medium accumulated in the downcomer 5 has reached the upper predetermined height position H when the flow air C supplied to the external heat exchanger 7 is stopped.
- the fluid medium accumulated in the down force marker 5 reaches the upper predetermined height position H from the lower reference height position H.
- 0 1 measures the time t [sec], by the deposition amount of fluidized medium that is based on the inside diameter D [m] in the time t and the downcomer 5 V [m 3], the flow rate Q [kg / sec] of the fluidized medium With the calculation means 25
- quartz glass having heat resistance is used.
- the embedded transmitted light window 26 is arranged so as to face the diameter direction of the vertically extending tube, and at the predetermined height position H above the downcomer 5 is a quartz glass having heat resistance.
- the transmitted light window 27 in which etc. are embedded is arranged so as to face the diameter direction of the vertically extending pipe.
- the lower detection means 23 is connected to the lower reference height in the downcomer 5 through the transmitted light window 26. Light projected from the lower projector 28 so as to cross the position H is received by the lower receiver 29.
- It is composed of the lower light sensor 30 and the light projected from the upper light projector 31 so as to cross the upper predetermined height position H in the downcomer 5 through the transmitted light window 27.
- the upper light sensor 33 that receives light at 32 constitutes the upper detection means 24, and the light of the lower light sensor 30 projected across the lower reference height position H in the downcomer 5 is doubled.
- the timer of the calculation means 25 is started at the time when it is blocked by the fluid medium accumulated in the uncommer 5 and is projected so as to cross the upper predetermined height position H in the downcomer 5.
- the timer of the calculating means 25 is stopped, so that the flowing medium accumulated in the downcomer 5 becomes the lower reference height. Measure the time t from the position H to the upper predetermined height position H.
- a roof member 34 is provided to prevent the projected light from being blocked by the fluid medium flowing down the downcomer 5.
- the roof member 34 may be provided in the downcomer 5 at least above the upper optical sensor 33 as shown by the solid line in FIG. 2.
- the roof member 34 ′ in addition to the roof member 34 is shown in FIG. 2, it may be provided in the downcomer 5 above the lower optical sensor 30 as indicated by a virtual line.
- the lower light sensor 30 constituting the lower detection means 23 is projected from the lower projector 28 through the transmitted light window 26 so as to cross the lower reference height position H in the downcomer 5.
- the light projected across 1 is received by the upper light receiver 32.
- the light of the lower light sensor 30 projected so as to cross the lower reference height position H in the downcomer 5 accumulates in the downcomer 5.
- the flow rate Q of the fluid medium that is, the circulation amount is
- the circulating medium circulating amount measuring method and apparatus of the circulating fluidized bed combustion apparatus of the present invention is not limited to the above illustrated example, but instead of an external heat exchanger as an external recirculation unit, A fluidized-bed gasification system that is mainly equipped with a gasification furnace for drying and gasification of hydrous waste such as biomass and raw garbage and sewage sludge, and for burning mainly combustible solids in the combustion furnace.
- an external heat exchanger as an external recirculation unit
- the circulating medium circulating amount measuring method and apparatus of the circulating fluidized bed combustion apparatus determines how much the circulating amount of the fluidized medium is controlled to stabilize and stabilize the temperature in the combustion furnace. It can be applied when judging.
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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)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
- Measuring Volume Flow (AREA)
- Incineration Of Waste (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/813,250 US7562641B2 (en) | 2005-01-11 | 2005-12-27 | Method and device for measuring circulation quantity of bed material in circulating fluidized bed combustor |
EP05822568A EP1837592B1 (en) | 2005-01-11 | 2005-12-27 | Method and device for measuring circulation quantity of bed material in circulating fluidized bed combustor |
DE602005013295T DE602005013295D1 (de) | 2005-01-11 | 2005-12-27 | Verfahren und vorrichtung zum messen der zirkulationsmenge von bettmaterial in einer zirkulierenden wirbelbettbrennkammer |
AU2005324612A AU2005324612B2 (en) | 2005-01-11 | 2005-12-27 | Method and device for measuring circulation quantity of bed material in circulating fluidized bed combustor |
NZ555972A NZ555972A (en) | 2005-01-11 | 2005-12-27 | Method and device for measuring circulation quantity of bed material in circulating fluidized bed combustor |
CA2592308A CA2592308C (en) | 2005-01-11 | 2005-12-27 | Method and device for measuring circulation quantity of bed material in circulating fluidized bed combustor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005003911A JP4274124B2 (ja) | 2005-01-11 | 2005-01-11 | 循環流動層燃焼装置の流動媒体循環量計測方法及び装置 |
JP2005-003911 | 2005-01-11 |
Publications (1)
Publication Number | Publication Date |
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WO2006075519A1 true WO2006075519A1 (ja) | 2006-07-20 |
Family
ID=36677548
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/023855 WO2006075519A1 (ja) | 2005-01-11 | 2005-12-27 | 循環流動層燃焼装置の流動媒体循環量計測方法及び装置 |
Country Status (11)
Country | Link |
---|---|
US (1) | US7562641B2 (ja) |
EP (1) | EP1837592B1 (ja) |
JP (1) | JP4274124B2 (ja) |
CN (1) | CN100575783C (ja) |
AU (1) | AU2005324612B2 (ja) |
CA (1) | CA2592308C (ja) |
DE (1) | DE602005013295D1 (ja) |
NZ (1) | NZ555972A (ja) |
RU (1) | RU2345278C1 (ja) |
WO (1) | WO2006075519A1 (ja) |
ZA (1) | ZA200704958B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102759382A (zh) * | 2011-04-25 | 2012-10-31 | 中国科学院工程热物理研究所 | 固体循环流率测量装置及方法 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US8069824B2 (en) * | 2008-06-19 | 2011-12-06 | Nalco Mobotec, Inc. | Circulating fluidized bed boiler and method of operation |
CN101639373B (zh) * | 2008-07-30 | 2011-02-02 | 中国科学院工程热物理研究所 | 循环流化床物料循环流率测量方法与装置 |
US8668753B2 (en) * | 2009-04-24 | 2014-03-11 | G.D.O. Inc | Two stage process for converting biomass to syngas |
FR2948177B1 (fr) * | 2009-07-16 | 2011-08-05 | Inst Francais Du Petrole | Procede de combustion en boucle chimique avec controle independant de la circulation des solides |
JP5589322B2 (ja) * | 2009-08-25 | 2014-09-17 | 株式会社Ihi | 純酸素燃焼ボイラ |
AT510897B1 (de) * | 2010-09-03 | 2012-10-15 | Univ Wien Tech | Wärmespeichersystem |
US20140065559A1 (en) * | 2012-09-06 | 2014-03-06 | Alstom Technology Ltd. | Pressurized oxy-combustion power boiler and power plant and method of operating the same |
RS56057B1 (sr) * | 2013-12-16 | 2017-09-29 | Doosan Lentjes Gmbh | Uređaj sa fluidizovanim slojem sa izmenjivačem toplote sa fluidizovanim slojem |
EP2884170A1 (en) * | 2013-12-16 | 2015-06-17 | Doosan Lentjes GmbH | Fluidized bed apparatus |
CN110914594B (zh) * | 2017-07-27 | 2021-09-10 | 住友重机械福惠能源有限公司 | 流化床锅炉设备以及预热流化床锅炉设备中的燃烧气体的方法 |
CN109847459A (zh) * | 2019-01-25 | 2019-06-07 | 西安热工研究院有限公司 | 一种采用流化过程的热化学储热系统及方法 |
CN111964043B (zh) * | 2020-09-01 | 2023-04-07 | 福建省圣新环保股份有限公司 | 新型鸡粪锅炉返料床及其监测方法 |
WO2023222228A1 (en) * | 2022-05-19 | 2023-11-23 | Sumitomo SHI FW Energia Oy | Method of and control system for monitoring a process of circulation of solid material in a circulating fluidized bed reactor |
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GB1587201A (en) * | 1976-07-16 | 1981-04-01 | Exxon Research Engineering Co | Utilisation of solid material containing combustible matter |
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2005
- 2005-01-11 JP JP2005003911A patent/JP4274124B2/ja active Active
- 2005-12-27 DE DE602005013295T patent/DE602005013295D1/de active Active
- 2005-12-27 RU RU2007124516/06A patent/RU2345278C1/ru active
- 2005-12-27 WO PCT/JP2005/023855 patent/WO2006075519A1/ja active Application Filing
- 2005-12-27 AU AU2005324612A patent/AU2005324612B2/en not_active Ceased
- 2005-12-27 CN CN200580045711A patent/CN100575783C/zh not_active Expired - Fee Related
- 2005-12-27 US US11/813,250 patent/US7562641B2/en active Active
- 2005-12-27 NZ NZ555972A patent/NZ555972A/en not_active IP Right Cessation
- 2005-12-27 ZA ZA200704958A patent/ZA200704958B/xx unknown
- 2005-12-27 EP EP05822568A patent/EP1837592B1/en active Active
- 2005-12-27 CA CA2592308A patent/CA2592308C/en active Active
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JP2000274604A (ja) * | 1999-03-23 | 2000-10-03 | Kubota Corp | 粒体流量測定方法並びに循環流動層炉の循環量測定装置及び循環量制御機構 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102759382A (zh) * | 2011-04-25 | 2012-10-31 | 中国科学院工程热物理研究所 | 固体循环流率测量装置及方法 |
CN102759382B (zh) * | 2011-04-25 | 2014-08-20 | 中国科学院工程热物理研究所 | 固体循环流率测量装置及方法 |
Also Published As
Publication number | Publication date |
---|---|
AU2005324612B2 (en) | 2010-02-11 |
US7562641B2 (en) | 2009-07-21 |
JP2006194466A (ja) | 2006-07-27 |
EP1837592B1 (en) | 2009-03-11 |
JP4274124B2 (ja) | 2009-06-03 |
NZ555972A (en) | 2010-09-30 |
CA2592308A1 (en) | 2006-07-20 |
RU2345278C1 (ru) | 2009-01-27 |
CA2592308C (en) | 2010-06-08 |
AU2005324612A1 (en) | 2006-07-20 |
CN100575783C (zh) | 2009-12-30 |
ZA200704958B (en) | 2009-08-26 |
DE602005013295D1 (de) | 2009-04-23 |
US20080153048A1 (en) | 2008-06-26 |
CN101095013A (zh) | 2007-12-26 |
EP1837592A1 (en) | 2007-09-26 |
EP1837592A4 (en) | 2008-06-11 |
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