WO2013121088A2 - Chaudière à lit fluidisé circulant comportant un système réchauffeur d'air - Google Patents

Chaudière à lit fluidisé circulant comportant un système réchauffeur d'air Download PDF

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Publication number
WO2013121088A2
WO2013121088A2 PCT/FI2013/050117 FI2013050117W WO2013121088A2 WO 2013121088 A2 WO2013121088 A2 WO 2013121088A2 FI 2013050117 W FI2013050117 W FI 2013050117W WO 2013121088 A2 WO2013121088 A2 WO 2013121088A2
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WO
WIPO (PCT)
Prior art keywords
flue gas
furnace
fluidized bed
air preheater
air
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.)
Ceased
Application number
PCT/FI2013/050117
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English (en)
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WO2013121088A3 (fr
Inventor
Marko Ruuskanen
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Amec Foster Wheeler Energia Oy
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Foster Wheeler Energia Oy
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Foster Wheeler Energia Oy filed Critical Foster Wheeler Energia Oy
Publication of WO2013121088A2 publication Critical patent/WO2013121088A2/fr
Publication of WO2013121088A3 publication Critical patent/WO2013121088A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F23C10/02—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0015—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed for boilers of the water tube type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus
    • F22B31/0007—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed
    • F22B31/0084—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements or dispositions of combustion apparatus with combustion in a fluidized bed with recirculation of separated solids or with cooling of the bed particles outside the combustion bed
    • 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
    • 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
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/10002—Treatment devices for the fluidizing gas, e.g. cooling, filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/11001—Conducting systems with a gas flow bypass from main flue to an auxiliary flue
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates to a circulating fluidized bed boiler with an air preheater system.
  • the invention especially relates to a circulating fluidized bed boiler comprising a primary air preheater and a fluidized bed heat exchange chamber.
  • Fuel such as coal or biofuel
  • a circulating fluidized bed (CFB) boiler to form ash and flue gas.
  • the fuel may be combusted with other oxidant gas than air, such as oxygen enriched air, but, for the sake of simplicity, in the following the oxidant is simply called air.
  • the fluidizing velocity of a particle bed formed in the furnace is so high, typically 4 - 6 m/s, that a portion of the bed material particles and uncombusted fuel particles are entrained with the flue gas and discharged from the furnace. Particles larger than a separation limit are separated from the flue gas in a particle separator and returned back to the furnace through a solids return duct.
  • the solids return duct may comprise a heat exchange chamber with a fluidized bed for recovering heat from the circulating particles. Additional particles may be conducted to the heat exchange chamber directly from the furnace, or the CFB boiler may comprise a heat exchange chamber for recovering heat only from a fluidized bed of particles conducted therein directly from the furnace. All these different types of heat exchange chambers are in the following commonly referred as fluidized bed heat exchange chambers.
  • combustion air Three kinds of combustion air are typically introduced into a fluidized bed boiler: primary air that is used for fluidizing the particle bed in the furnace; secondary air that is fed to the furnace through wall nozzles to ensure complete combustion of the fuel; and second fluidizing air, so called high pressure (HP) air, that is used for fluidizing a particle bed in a fluidized bed heat exchange chamber.
  • the pressure of the HP air is higher than that of the primary or secondary air because there is a relatively high pressure drop in the slow fluidized bed formed in the fluidized bed heat exchange chamber.
  • Fluidizing velocity of the particle bed in the fluidized bed heat exchange chamber is typically less than 0.5 m/s.
  • the streams of primary and secondary air are typically preheated by flue gas in a tubular air preheater or in a regenerative air preheater, also called rotating air preheater, arranged in the flue gas channel between a feed water preheater (economizer) and means for flue gas cleaning, such as a dust separator.
  • a feed water preheater economizer
  • means for flue gas cleaning such as a dust separator.
  • Preheating the streams of primary and secondary air thus, reduces the flue gas exit temperature and, therefore, increases the thermal efficiency of the boiler.
  • a change of 10 °C in flue gas exit temperature results in an approximately 0.6 % change in the boiler efficiency.
  • Primary and secondary air streams may be separated from each other downstream of a common air preheater or the streams may be preheated separately, for example, in two tubular air preheaters or in two sectors of a regenerative air preheater. Because, in view of the present invention, the preheating of primary air and secondary air correspond to each other, the means for preheating both primary and secondary air are in the following commonly called as a primary air preheater.
  • HP air Due to the relatively low flow rate of the HP air, HP air is typically led to the furnace without preheating. However, in some cases the amount of HP air may be relatively large, up to 5-10% of total combustion air. Especially in large CFB boilers of today, the flow rate of HP air may be of the order of 10 - 15 m 3 /s. Therefore, it is possible to transfer several MW of heat from the flue gas to the HP air, and, thus, further decrease the end temperature of the flue gas and thereby increase the boiler efficiency. [0008] U.S. Patent No.
  • 4,470,255 discloses a CFB boiler, in which primary air, secondary air, and fluidizing air of a fluidized bed heat exchanger (HP air) are all preheated by a single air preheater arranged in the flue gas channel.
  • the air preheater appears to be a tubular air preheater, but the patent does not specify the type or operation of the air preheater.
  • the thermal efficiency of the boiler may be less than optimal.
  • An object of the present invention is to provide an air preheater system improving the thermal efficiency of the boiler.
  • a circulating fluidized bed boiler with an air preheater system comprising a furnace for combusting particulate solid fuel with primary air injected to the furnace through a bottom grid and secondary air injected to the furnace through walls of the furnace; a flue gas channel connected to the furnace for discharging flue gas and particles entrained therewith from the furnace; a particle separator for separating particles from the flue gas; a return duct for returning separated particles from the particle separator to the furnace; and a fluidized bed heat exchange chamber for recovering heat from particles conducted therein from the furnace, the fluidized bed heat exchange chamber comprising inlet means for conducting particles from the furnace to the fluidized bed heat exchange chamber; outlet means for conducting particles from the fluidized bed heat exchange chamber back to the furnace; and means for injecting second fluidizing gas to the fluidized bed heat exchange chamber, wherein the air preheater system comprises a primary air preheater arranged in a
  • the primary air preheater and the air preheater for preheating the second fluidizing air, so called high pressure (HP) air, being arranged in a portion of the flue gas channel means that heat is transferred in the air preheaters from the flue gas flowing in the portion of the flue gas channel in question to the respective stream of air.
  • the air preheaters are in practice usually rotary (rotating ja rotary ovat yhta oikein. Nyt kaytin keksintoilmoituksessa kaytettya sanaa rotating), or regenerative, air preheaters or tubular air preheaters.
  • An air preheater can in some applications even be a heat exchanger in which heat is transferred from the flue gas to a stream of air by a heat transfer medium, such as water.
  • the primary air preheater is a rotary air preheater.
  • the HP air preheater is a tubular air preheater.
  • the primary air preheater is arranged in a first portion of the flue gas channel and the HP air preheater is arranged in a second portion of the flue gas channel, which second portion of the flue gas channel is connected in parallel with the first portion of the flue gas channel.
  • the flue gas channel is divided, typically at a point downstream of a feed water preheater, into two parallel channel portions, wherein the primary air preheater is arranged in one of the parallel channel portions, and the HP air preheater is arranged in the other of the parallel channel portions.
  • the channel portions comprise dampers to control the flue gas flows or they are dimensioned so that preferably about 90 - 98 % of the flue gas flows through the primary air heater, and the rest through the HP air preheater.
  • An advantage of the present invention is that when the HP air is preheated by flue gas in a separate air preheater, arranged in the flue gas stream parallel to the primary air preheater, the flue gas end temperature can be lowered, and thereby the boiler efficiency is improved. In the following, a simple explanation is given for the effect, in which complications due to possible air leakage in the primary air preheater are ignored.
  • T ao air outlet temperature from the primary air preheater
  • T ai air inlet temperature to the primary air preheater
  • Ti g , flue gas inlet temperature to the primary air preheater
  • the thermal effectiveness is in practice bound to be less than one because the air outlet temperature T ao is always lower than the flue gas inlet temperature T fgi .
  • a maximum thermal effectiveness typically it is possible to obtain for an air preheater, especially for a large rotating air preheater, a maximum thermal effectiveness of about 0.89 - 0.92.
  • dnrifg/dt mass flow rate of the flue gas in the primary air preheater
  • c f g specific heat of the flue gas
  • Tfgo flue gas outlet temperature to the primary air preheater.
  • Equations (1 ), (2) and (3) lead to flue gas outlet temperature from the primary air preheater
  • Tfgo T fgi - ⁇ * (dma/dt * Ca)/(dm fg /dt * c fg ) * (T fgi -T ai ).
  • the thermal effectiveness ⁇ is constant, the flue gas outlet temperature T fgo can be decreased by decreasing the mass flow rate dm fg /dt of the flue gas flowing through the primary air preheater.
  • the present invention is based on the observation that if the mass flow rate of the flue gas through the primary air preheater is decreased by a relatively small amount, it is possible to increase the size of the primary air preheater so that the maximum value for the effectiveness ⁇ is again obtained.
  • the air preheater system differs from a conventional air preheater system in that the mass flow rate of the flue gas flowing through the primary air preheater is decreased by letting a portion of the flue gas bypass the primary air preheater and flow through a separate HP air preheater.
  • the size of primary air heater is simultaneously increased from that of a conventional design so that a typical maximum value of the thermal
  • FIG. 1 is a schematic diagram of a circulating fluidized bed boiler with an air preheater system according to the present invention.
  • FIG. 1 schematically shows a circulating fluidized bed boiler 10, comprising a furnace 12 with a bed of particles 14 fluidized by primary air 16 which is introduced to the furnace through a bottom grid 18.
  • Fuel such as biofuel or coal
  • Fuel feeding means 20 is fed to the boiler through fuel feeding means 20.
  • the fuel is combusted by the primary air 16 and secondary air 22, which is fed to the furnace through secondary air feeding means 24 at the walls 26 of the furnace.
  • Flue gas generated in the combustion which is discharged from the furnace through a flue gas channel 28, entrains bed particles and uncombusted fuel, a portion of which is separated from the flue gas in a particle separator 30 and returned back to the furnace by a return duct 32.
  • Particles separated in the particle separator are conducted through the return duct and an inlet opening 34 to a fluidized bed heat exchanger 36 comprising a bed of particles fluidized by second fluidizing air 38, so called high pressure (HP) air.
  • Means 40 for injecting the second fluidizing gas to the fluidized bed heat exchange chamber preferably comprise a conventional wind box and a second bottom grid.
  • the fluidized bed heat exchanger 36 comprises heat exchange surfaces 42 to cool the particles before they are returned back to the furnace 12 through an outlet opening 44.
  • the fluidized bed heat exchanger 36 may comprise also another inlet 46 to conduct particles directly from the furnace 12 to the fluidized bed heat exchanger 36.
  • 1 comprises also another fluidized bed heat exchanger 48, fluidized with the HP air 38, which comprises only an inlet opening 46' for feeding particles directly from the furnace 12 to the heat exchanger 48.
  • the number of the different types of the heat exchangers is often larger than one, or the boiler may comprise one or more heat exchangers of one of these types only.
  • Cleaned flue gas is conducted from the particle separator 30 via a back pass 50, comprising heat exchange units, such as superheaters 52 and economizers 54 to a primary air preheater 56.
  • the primary air preheater 56 is here shown as a rotary, or regenerative, air preheater, but it may alternatively be a tubular air preheater.
  • the flue gas flows from the primary air preheater via a dust separator 58 and possible other gas cleaning units (not shown) to a stack 60.
  • Primary air and secondary air are typically heated in the primary air preheater 38 to a temperature of about 300 °C.
  • the primary air preheater 56 is arranged in a flue gas channel portion 62, so called first flue gas channel portion, and an air preheater 64 for preheating the second fluidizing air 38, or HP air, is arranged in another flue gas channel portion 62', so called second flue gas channel portion, which is connected in parallel with the first flue gas channel portion 62.
  • the air preheater system comprises the primary air preheater 56 and the HP air preheater 64, which are connected in parallel.
  • One or both of the parallel flue gas channel portions 62, 62' may advantageously comprise a damper 66, by which the rate of flue gas flowing through the HP air preheater 64 can be adjusted to, for example, 3 - 4 % of the total flue gas flow rate.
  • a damper 66 by which the rate of flue gas flowing through the HP air preheater 64 can be adjusted to, for example, 3 - 4 % of the total flue gas flow rate.
  • the flue gas channel portions 62 and 62' Downstream of the primary air preheater 56 and the HP air preheater 64, the flue gas channel portions 62 and 62' are again combined to a single flue gas channel, which leads to the dust separator 58.
  • the HP air preheater 64 is typically a tubular air preheater and dimensioned for heating, for example, 4 - 5 % of the total stream of air 68 introduced to the boiler 10.

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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)
  • Thermal Sciences (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Air Supply (AREA)

Abstract

L'invention porte sur une chaudière à lit fluidisé circulant comportant un système réchauffeur d'air, comprenant un four pour la combustion de combustible solide particulaire avec de l'air primaire injecté dans le four par une grille de fond et de l'air secondaire injecté dans le four par les parois du four; un passage de gaz de combustion raccordé au four pour l'évacuation du gaz de combustion et de particules entraînées avec celui-ci à partir du four; un séparateur de particules pour la séparation des particules du gaz de combustion; une canalisation de retour pour le renvoi de particules séparées provenant du séparateur de particules vers le four; et une chambre d'échange de chaleur à lit fluidisé pour la récupération de chaleur à partir des particules amenées dans celle-ci à partir du four, la chambre d'échange de chaleur à lit fluidisé comprenant un moyen d'entrée pour amener les particules provenant du four dans la chambre d'échange de chaleur à lit fluidisé; un moyen de sortie pour ramener les particules provenant de la chambre d'échange de chaleur à lit fluidisé vers le four; et un moyen pour injecter un second gaz de fluidisation dans la chambre d'échange de chaleur à lit fluidisé, le système réchauffeur d'air comprenant un réchauffeur d'air primaire disposé dans une première partie du passage de gaz de combustion pour le réchauffage de l'air primaire et de l'air secondaire et un réchauffeur d'air pour le réchauffage du second air de fluidisation disposé dans une seconde partie du passage de gaz de combustion, laquelle seconde partie du passage de gaz de combustion est raccordée en parallèle avec la première partie du passage de gaz de combustion.
PCT/FI2013/050117 2012-02-15 2013-02-04 Chaudière à lit fluidisé circulant comportant un système réchauffeur d'air Ceased WO2013121088A2 (fr)

Applications Claiming Priority (2)

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FI20125171A FI20125171L (fi) 2012-02-15 2012-02-15 Kiertoleijupetikattila, jossa on ilman esilämmitysjärjestely
FI20125171 2012-02-15

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CN105737142A (zh) * 2016-02-05 2016-07-06 广东省特种设备检测研究院 流化床余热综合利用系统
CN106500127A (zh) * 2017-01-06 2017-03-15 上海明华电力技术工程有限公司 一种旁路空预器热量回收系统及方法
CN106765211A (zh) * 2016-12-07 2017-05-31 洛阳明远石化技术有限公司 催化裂化烟气处理装置
CN106897819A (zh) * 2017-01-21 2017-06-27 华北电力大学 一种循环流化床机组变负荷过程中给煤量合理性检测方法及系统
CN107573959A (zh) * 2017-09-26 2018-01-12 清华大学 一种利用流化床生产生物炭的装置
CN108518672A (zh) * 2018-03-30 2018-09-11 清华大学 一种低氮燃烧循环流化床锅炉
CN110397948A (zh) * 2019-07-11 2019-11-01 湖南大唐节能科技有限公司 一种管式空气预热器防堵装置
WO2021247547A1 (fr) * 2020-06-01 2021-12-09 Kayara Sammy Alimentation en air assistée par le vent de centrales électriques à charbon

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Publication number Priority date Publication date Assignee Title
US4470255A (en) 1980-08-18 1984-09-11 Fluidised Combustion Contractors Limited Power generation plant

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105737142A (zh) * 2016-02-05 2016-07-06 广东省特种设备检测研究院 流化床余热综合利用系统
CN105737142B (zh) * 2016-02-05 2019-06-14 广东省特种设备检测研究院 流化床余热综合利用系统
CN106765211A (zh) * 2016-12-07 2017-05-31 洛阳明远石化技术有限公司 催化裂化烟气处理装置
CN106765211B (zh) * 2016-12-07 2024-01-09 洛阳明远石化技术有限公司 催化裂化烟气处理装置
CN106500127A (zh) * 2017-01-06 2017-03-15 上海明华电力技术工程有限公司 一种旁路空预器热量回收系统及方法
CN106897819A (zh) * 2017-01-21 2017-06-27 华北电力大学 一种循环流化床机组变负荷过程中给煤量合理性检测方法及系统
CN106897819B (zh) * 2017-01-21 2020-07-31 华北电力大学 一种循环流化床机组变负荷过程中给煤量合理性检测方法及系统
CN107573959A (zh) * 2017-09-26 2018-01-12 清华大学 一种利用流化床生产生物炭的装置
CN107573959B (zh) * 2017-09-26 2023-12-12 清华大学 一种利用流化床生产生物炭的装置
CN108518672A (zh) * 2018-03-30 2018-09-11 清华大学 一种低氮燃烧循环流化床锅炉
CN110397948A (zh) * 2019-07-11 2019-11-01 湖南大唐节能科技有限公司 一种管式空气预热器防堵装置
WO2021247547A1 (fr) * 2020-06-01 2021-12-09 Kayara Sammy Alimentation en air assistée par le vent de centrales électriques à charbon

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