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1. 发明专利

JP2002243109A FLUIDIZED BED BOILER DEVICE AND OPERATING METHOD THEREOF 失效
公开(公告)号：JP2002243109A
公开(公告)日：2002-08-28
申请号：JP2001044649
申请日：2001-02-21
申请人： CHUGOKU ELECTRIC POWER , BABCOCK HITACHI KK
发明人： ITO MASARU , HORIUCHI KAZUYUKI , OKADA DAISUKE , MAEDA MASAKATSU
IPC分类号： F22B1/02 , F22B35/00 , F23C6/02 , F23C10/00 , F23C10/28 , F23B1/12
摘要： PROBLEM TO BE SOLVED: To burn low-grade coal stably in a fluidized bed boiler. SOLUTION: In fluidized bed boilers 2, 3, having a plurality of furnaces wherein heat transfer tubes for constituting an evaporator 8, a superheater 11, a reheater 14 and the like are arranged in a fluidized medium 4 in the furnace, while the plurality of furnaces are provided with an air volume control means capable of controlling the flow rate of air independently from other respective furnaces, coal of different kind is burnt in respective furnaces while the combustion gases of respective furnaces are mixed to discharge the same into atmosphere.

2. 发明专利

JP2002081615A METHOD FOR MEASURING HEIGHT OF PRESSURIZED FLUIDIZED BED 失效
公开(公告)号：JP2002081615A
公开(公告)日：2002-03-22
申请号：JP2000264139
申请日：2000-08-31
申请人： BABCOCK HITACHI KK
发明人： SAKATA TARO , OKADA DAISUKE
IPC分类号： G01F23/14 , F23C10/16
摘要： PROBLEM TO BE SOLVED: To provide a method which contributes to the stable operation and control of a fluidized bed boiler by accurately and continuously measuring the height of a pressurized fluidized bed from a low-load low-height time to a high-load high-height time. SOLUTION: A plurality of height values of the pressurized fluidized bed is calculated from the combination of the reference differential pressures 51-55 of the fluidized bed which are the differential pressure values measured by means of differential pressure measuring instruments 41-45 provided among pressure gauge seats which are positioned at different positions in the height direction of the fluidized bed or the differences among the measured differential pressure values and the total differential pressure 56 of the fluidized bed which is the differential pressure between one of the pressure gauge seats and a measuring seat which is always above the surface of the fluidized bed. Of the calculated height values, the value at the pressure gauge seat which is the nearest to the surface of the bed among the seats positioned in the bed is selected. When the minimum value is selected from among the plurality of height values thus obtained, the height value obtained from the reference differential pressure corresponding to the pressure gauge seat which is the nearest to the surface of the bed among the seats poisoned in the bed is automatically selected and the fluidized bed boiler can be operated and controlled stably through the accurate and continuous height measurement.

3. 发明专利

JP2003148707A FLUIDIZED BED DEVICE AND ELECTRIC POWER GENERATING SYSTEM WITH FLUIDIZED BED DEVICE 审中-公开
公开(公告)号：JP2003148707A
公开(公告)日：2003-05-21
申请号：JP2001347734
申请日：2001-11-13
申请人： BABCOCK HITACHI KK
发明人： HOKARI NOBUYUKI , OKADA DAISUKE
IPC分类号： F23C10/28 , F23C10/18
摘要： PROBLEM TO BE SOLVED: To detect the bed height of a bed material at the initial packing of the bed material of the fluidized bed device having a fluidized reactor. SOLUTION: A fluidized bed device comprises a fluidized bed vessel 2 which forms a fluidized bed 1 by fluidizing a particulate bed material using a flow gas, a bed material feeding nozzle 5a which feeds a bed material to the body of the fluidized bed vessel 2, a raw material feeding nozzle 6 which feeds raw materials to the body of the fluidized bed vessel 2, a gas feeding nozzle which feeds a flow gas to the bottom of the fluidized bed vessel 2, a secondary raw material nozzle which feeds secondary raw materials reacting with the raw materials to the body of the fluidized bed vessel 2, an discharging nozzle 7 which discharges a gas produced by a reaction from the top of the fluidized bed vessel 2, a dispersing plate 8 installed at the bottom of the bed of the fluidized bed 1 which evenly disperses the flow gas, wherein a plurality of temperature sensors 9a to 9c are installed which detect a temperature at a position higher by a constant height above the top surface of the dispersing plate 8, and a fluidized bed height detecting means 12 which detects the fluidized bed height of the bed material packed on the dispersing plate 8 from the detecting value of the temperature sensors while the flow gas hiving higher temperature than that of the bed material is blown from the gas feeding nozzle.

4. 发明专利

JP2000257809A PRESSURIZED FLUIDIZED BED BOILER AND STARTING METHOD OF SAME 失效
公开(公告)号：JP2000257809A
公开(公告)日：2000-09-22
申请号：JP6401499
申请日：1999-03-10
申请人： BABCOCK HITACHI KK
发明人： IWASE TETSUYA , OKADA DAISUKE , YAMAMOTO YASUISA , AKIMOTO SHUHEI , TOMOYASU KOJI
IPC分类号： F23C10/18 , F22B1/02 , F22B35/14
摘要： PROBLEM TO BE SOLVED: To obtain a quick response of main steam temperature control when the main stream temperature is controlled by regulating the balance of a rate of water to fuel only through the regulation of flow rate of fuel by a method wherein the combustion air flow rate controllability of respective furnaces, divided into a plurality of sets, and the combustion characteristics as well as the atmospheric characteristic of a boiler furnace are improved while the starting method of the furnaces is provided. SOLUTION: In a pressurized fluidized bed boiler, in which an evaporator 23 is arranged in a furnace 1a, a super-heater 24 and a re-heater 25 are arranged in another furnace 1b, respective furnaces 1a, 1b are received into pressure vessels 27a, 27b receiving respective furnaces 1a, 1b individually, while means 3a, 3b for regulating combustion air sent into respective furnaces 1a, 1b, and a regulating means for the rate of supplying fuel are provided, the flow rate of combustion air is regulated by introducing a control signal, for operating the combustion air flow rate regulating devices 3a, 3b in accordance with the superficial velocity detecting values of superficial velocity measuring instrument 5a, 5b in respective furnaces 1a, 1b, as the correcting factor for the regulation.

5. 发明专利

JPH07286703A PRESSURIZED FLUIDIZED-BED BOILER COMPOSITE POWER PLANT AND OPERATING METHOD THEREFOR 失效
公开(公告)号：JPH07286703A
公开(公告)日：1995-10-31
申请号：JP7877694
申请日：1994-04-18
申请人： BABCOCK HITACHI KK
发明人： OKADA TAKAHIRO , SAKATA TARO , SAKAI KAZUTO , OKADA DAISUKE
IPC分类号： F22B1/02 , F22D1/12
摘要： PURPOSE:To prevent sulfuric acid corrosion of a gas cooler in a PFBC composite power plant. CONSTITUTION:Steam turbine using steam generated by heating feed water supplied to a fluidized-bed furnace 3 contained in a pressure vessel 2 is used to drive a steam turbine. A gas turbine 4 is driven by combustion gas of high temperature and high pressure generated from the furnace 3, heat of exhaust gas from the turbine 4 is recovered by a high-temperature gas cooler 6 and a low-temperature gas cooler 7 to heat feed water supplied to the furnace 3. At the time of starting this PFBC composite power plant and low load, a circulating water flow regulating valve 15 of a circulating line 17 is opened, a circulating pump 6 is rotated, further a bypass feed water flow regulating valve 19 of a low-temperature gas cooler bypass line 20 is opened, and water is supplied to the line 20 from a low-pressure heater. Thus, feed water amount is reduced from the heater to the cooler 7 and the temperature at the low temperature terminal of the cooler 7 can be obtained at more than a dew point of sulfur containing compound.

6. 发明专利

JP2003139303A POWER GENERATING SYSTEM 审中-公开
公开(公告)号：JP2003139303A
公开(公告)日：2003-05-14
申请号：JP2001333195
申请日：2001-10-30
申请人： BABCOCK HITACHI KK
发明人： OKADA DAISUKE , HOKARI NOBUYUKI
IPC分类号： F23C10/28 , F22B1/02 , F22B35/00
摘要： PROBLEM TO BE SOLVED: To favorably improve combustion in a neighborhood of a normally operating fuel feeder when a part of fuel feeders stops in a fluidized bed combustor. SOLUTION: In the fluidized bed combustor, when a part of a plurality of fuel feeders 4a-4j stops, a total fuel quantity fed to a fluidized bed combustion furnace 2 is held at a demand by distributing a fuel quantity fed by the stopped fuel feeders to other fuel feeders, an air quantity for fluidization and combustion fed from an air supply port 5 is increased in response to share increases in feeding fuel quantities of the other fuel feeders, and a set value of oxygen concentration is changed on the basis of a ratio between the total fuel quantity and the increased air quantity.

7. 发明专利

JP2003129859A COMPOSITE POWER GENERATION SYSTEM 审中-公开
公开(公告)号：JP2003129859A
公开(公告)日：2003-05-08
申请号：JP2001324843
申请日：2001-10-23
申请人： BABCOCK HITACHI KK
发明人： OKADA DAISUKE , IWASE TETSUYA
IPC分类号： F01D17/00 , F01K23/10 , F02C3/26 , F02C9/00 , H02P9/04
摘要： PROBLEM TO BE SOLVED: To control the output of a gas turbine generator independently of a steam turbine generator in a composite power generation system. SOLUTION: The composite power generation system is provided with: a pressurized fluidized bed boiler 5 which burns a fuel while fluidizing it using a combustion air 2 supplied from a compressor 1 as the air for fluidization and combustion, and has a steam heat transfer tube 17 and an overheating heat transfer tube 18 therein; a steam turbine generator 20 driven by the steam generated in the boiler 5; and a gas turbine generator 11 driven by a combustion gas 7 discharged from the boiler 5. In this system, there is provided a control means 28 for controlling an amount of the air for fluidization and combustion to regulate the output of the gas turbine generator 11 to a target value.

8. 发明专利

JP2003083501A Fluidized bed boiler 审中-公开
标题翻译：流化床锅炉
公开(公告)号：JP2003083501A
公开(公告)日：2003-03-19
申请号：JP2001277131
申请日：2001-09-12
申请人： Babcock Hitachi Kk , バブコック日立株式会社
发明人： OKADA DAISUKE
IPC分类号： F01K23/06 , F02C3/26 , F22B1/02 , F22B35/00 , F23C10/16
摘要： PROBLEM TO BE SOLVED: To provide a fluidized bed boiler capable of securely preventing the burnout of a superheater and a reheater in a starting process.
SOLUTION: This fluidized bed boiler is provided with the first furnace 5 having an evaporator 11 located in a fluidized bed 9a, the second furnace 7 having a superheater 15 and a reheater 19 located in the fluidized bed 9b and evaporation-detecting means 75 and 77 detecting whether the evaporation by the evaporator 11 reaches the amount allowing the steam to circulate through the superheaters 13 and 15 and the reheater 19 at a predetermined flow amount or above. It is constituted to start the stationary operation of the second furnace 7 at the time when the evaporation-detecting means 75 and 77 detects that the evaporation by the evaporator 11 reaches the amount allowing the steam to circulate through the superheaters 13 and 15 and the reheater 19 at the predetermined flow amount or above after starting the first furnace 5. Thereby the stationary operation of the second furnace 7 is started at the time of detecting that the evaporation by the evaporator 11 reaches the amount allowing the cooling steam to circulate through the superheaters 13 and 15 and the reheater 19 at the predetermined flow amount or above, thus preventing the burnout of the superheater and reheater securely.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种能够可靠地防止在启动过程中过热器和再热器烧坏的流化床锅炉。解决方案：该流化床锅炉设置有具有位于流化床9a中的蒸发器11的第一炉5，第二炉7具有过热器15和位于流化床9b中的再热器19和蒸发检测装置75和77 检测蒸发器11的蒸发是否达到允许蒸汽以预定流量或以上流过过热器13和15以及再热器19的量。在蒸发检测装置75和77检测到蒸发器11的蒸发达到允许蒸汽通过过热器13和15以及再热器循环的量时，构成为开始第二炉7的静止运行在第一炉5启动之后，以预定的流量或更高的流量进行处理。因此，在检测到蒸发器11的蒸发达到允许冷却蒸汽通过过热器的量的量时，开始第二炉7的静止操作 13和15以及再热器19处于预定流量或以上，从而防止过热器和再热器的烧坏。

9. 发明专利

JP2002243123A FLUIDIZED BED TYPE BOILER DEVICE AND OPERATING METHOD THEREOF 失效
公开(公告)号：JP2002243123A
公开(公告)日：2002-08-28
申请号：JP2001044671
申请日：2001-02-21
申请人： CHUGOKU ELECTRIC POWER , BABCOCK HITACHI KK
发明人： ITO MASARU , HORIUCHI KAZUYUKI , OKADA DAISUKE , MAEDA MASAKATSU
IPC分类号： F23G5/30 , F22B1/02 , F23C10/22 , F23G5/02 , F23K1/02 , F23K3/00
摘要： PROBLEM TO BE SOLVED: To perform a stable combustion of dust at a fluidized bed type boiler. SOLUTION: A fuel supplying pipe 11 is connected to a plurality of fuel supplying devices 3 arranged at a fluidized bed type boiler 1, and paste-like fuel having coal 8 and water 9 kneaded together is transferred to each of fuel supplying devices 3 through the fuel supplying pipe 11. At this time, after the dust is crushed by a dust pre-processing facility 16, the dust becoming paste-like state with the water 9 being fed is transferred through a crushed-dust transferring pipe 27 and supplied to the fuel supplying pipe 11 together with dispersed air. With such an arrangement as above, the crushed dust is mixed with the paste-like fuel, the mixed fuel is uniformly supplied from each of the fuel supplying devices 3 to the fluidized bed type boiler 1, and the dust is ignited stably in the fluidized bed 4.

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