共查询到19条相似文献,搜索用时 140 毫秒
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流化床冷渣器的设计与故障分析 总被引:3,自引:0,他引:3
近几年来,循环流化床锅炉(CFB锅炉)技术在国内发展迅速,随着循环流化床锅炉的大型化,采用流化床冷渣器已成主导方向,主要阐述了流化床冷渣器的工作原理、设计,对目前流化床冷渣器运行中出现的故障进行了分析并提出一些解决措施。 相似文献
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循环流化床锅炉风水冷渣器运行存在主要问题及原因分析,并提出了改进措施。介绍和推选滚筒冷渣器,发展完善滚筒冷渣器有助于大型循环流化床锅炉安全可靠运行。 相似文献
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流化床选择性冷渣器运行技术探讨 总被引:7,自引:0,他引:7
冷渣器作为循环流化床锅炉的关键设备 ,还存在着各种各样的问题 ,严重影响了锅炉的稳定运行。本文对某台流化床选择性冷渣器进行介绍 ,并对运行技术进行了总结和探讨。 相似文献
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循环流化床锅炉冷渣器的调整与改造 总被引:1,自引:0,他引:1
冷渣器是循环流化床锅炉的重要辅机之一,其作用是采用水或空气将循环流化床锅炉排出的900℃左右的高温灰渣冷却至200℃以下,回收一部分灰渣的物理显热,提高锅炉效率,它的正常运行直接影响到循环流化床锅炉的安全可靠和经济连续运行,而冷渣器能否维持正常排渣与冷渣器结构、设计有关外,也与运行人员的操作水平有关,故循环流化床锅炉的排渣系统运行不正常,故障率高是导致循环流化床锅炉不能带满负荷运行或被迫停炉的直接原因之一,梅县发电厂三期新投产的两台135MW机组循环流化床锅炉排渣系统在运行中出现的问题进行分析及探讨,并提出了改造的实施方法。 相似文献
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冷渣器是循环流化床锅炉的重要辅机之一,其作用是采用水或空气将循环流化床锅炉排出的900℃左右的高温灰渣冷却至200℃以下,回收一部分灰渣的物理显热,提高锅炉效率,它的正常运行直接影响到循环流化床锅炉的安全可靠和经济连续运行,而冷渣器能否维持正常排渣与冷渣器结构、设计有关外,也与运行人员的操作水平有关,故循环流化床锅炉的排渣系统运行不正常,故障率高是导致循环流化床锅炉不能带满负荷运行或被迫停炉的直接原因之一,针对梅县发电厂三期新投产的2台135 MW机组循环流化床锅炉排渣系统在运行中出现的问题进行分析及探讨,并提出了改造的实施方法。 相似文献
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振动移动床冷渣器的实验研究南京东南大学热能所王双群,章名耀东南大学热能工程研究所从1987年就开始了流化床锅炉冷渣器的研究工作,先后开发研究出了分段直接风冷式冷渣器和倾斜布风板浅流化床冷渣器等冷渣装置。最近又在原有冷渣器基础上开发出了一种新型的振动气... 相似文献
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风水联合冷渣器的设计特点与应用 总被引:1,自引:0,他引:1
冷渣器是否正常投运是影响循环流化床锅炉安全经济运行的重要因素,本文对瑞平电厂480t/h 循环流化床锅炉所采用的风水联合冷渣器设计特点和应用情况进行了简单介绍. 相似文献
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针对电厂内循环流化床锅炉脱硫效率低的问题,通过比较不同脱硫技术的优点、适用煤种以及国内中小型锅炉脱硫技术的应用情况,选用炉内喷钙脱硫技术对原有脱硫设备进行改造。介绍了炉内喷钙脱硫工艺的特点及系统构成,并给出了脱硫工艺改造经济性分析。分析表明炉内喷钙脱硫效率达70%-80%,SO2排放浓度仅为360mg·m^-3左右,完全满足国家环保政策考核标准,并且收到了良好的经济效益和环保效益,可作为中小型循环流化床脱硫工程参考。 相似文献
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S.S. Penner S.B. Alpert J.M. Beér C.R. Bozzuto I. Glassman R.B. Knust W. Markert A.K. Oppenheim L.D. Smoot R.E. Sommerlad C.L. Wagoner I. Wender W. Wolowodiuk K.E. Yeager 《Progress in Energy and Combustion Science》1984,10(2):87-144
Improved and new methods for direct coal utilization are reviewed, including the following: direct burning of pulverized coals, clean-fuel-combined-cycle systems, atmospheric pressure fluidized-bed combustion, advanced and pressurized fluidized-bed combustion, slagging combustors, coal-oil mixtures, coal-water mixtures, other coal slurries, etc. The emphasis is on research needs identified by the DOE/Coal Combustion and Applications Working Group (CCAWG) and relating to such processes as coal cleaning, slagging and fouling, environmental control systems, on-line diagnostics, and modeling. 相似文献
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S.S. Penner S.B. Alpert J.M. Beér C.R. Bozzuto I. Glassman R.B. Knust W. Markert A.K. Oppenheim L.D. Smoot R.E. Sommerlad C.L. Wagoner I. Wender W. Wolowodiuk K.E. yeager 《Energy》1984,9(5):361-418
Improved and new methods for direct coal utilization are reviewed, including the following: direct burning of pulverized coals, clean-fuel-combined-cycle systems, atmospheric pressure fluidized-bed combustion, advanced and pressurized fluidized-bed combustion, slagging combustors, coal-oil mixtures, coal-water mixtures, other coal slurries, etc. The emphasis is on research needs identified by the DOE/Coal Combustion and Applications Working Group (CCAWG) and relating to such processes as coal cleaning, slagging and fouling, environmental control systems, on-line diagnostics, and modeling. 相似文献
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Xinquan Liu 《Energy》1986,11(11-12)
China has many deposits of low-grade coal that can only be burned with fluidized-bed combustion (FBC) boilers. Since 1968, 570 FBC boilers have been put into operation in China's coal-mining areas, with a total steam generation rate of 3800ton/hr. Statistical data show that FBC is economically viable when the heating value of the fuel used is higher than 1500kcal/kg. The current status and prospects for development of FBC technology in coal-mining areas in China are presented. 相似文献
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Clean coal fluidized-bed technology in Poland 总被引:11,自引:0,他引:11
W. Nowak 《Applied Energy》2003,74(3-4):405-413
The use of a circulating fluidized-bed (CFB) for power generation is a rapidly growing technology in Poland. The ability of CFBs to burn a wide variety of fuels, while meeting strict emission-control regulations, makes them an ideal choice for burning such fuels as high-sulfur coal, lignite, peat, oil, sludge, petroleum coke, gas and wastes. All these fuels are burned cleanly and economically in CFB boilers without the need for complex scrubbers, catalytic systems or other costly chemical clean-up systems. Presently 19 CFB units are in operation or under construction in Poland; utilizing a wide variety of fuels and wastes. On the basis of gathered performance data, the CFB units met and significantly satisfied all the emission levels. The paper presents the boiler design parameters, design arrangement and specific unique design features of the CFB boilers. A particular concern with the CFB boiler is the low rank brown-coal and the large furnace which had to fit into the limited space of the existing plant. Environmental performances of large-scale CFB boilers are demonstrated. Special emphasis is placed on the experience gained with the largest CFB boilers which have been in operation for more than 4 years. 相似文献
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循环流化床锅炉旋风分离器的最新发展 总被引:1,自引:0,他引:1
分离器是循环流化床锅炉的关键部件之一,其结构形式及布置方式决定了锅炉整体布置的形式和紧凑性。针对大型循环流化床锅炉常用的高温旋风分离器,介绍了国内外循环流化床锅炉旋风分离器的最新发展概况,包括国外的水(汽)冷式旋风分离器、紧凑型方形旋风分离器、内置式旋风分离器以及常规高温旋风分离器结构的最新改进。 相似文献