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本文在介绍燃气轮机设备运行特性和我国当前燃气轮机发电行业现状的基础上,对燃气轮机部分负荷运行情况进行了仿真计算研究和运行数据分析研究。根据实际运行数据分析,我国燃气电厂机组普遍存在实际运行负荷长期低于设计负荷、燃气轮机部分负荷运行效率衰减、高品位能源浪费巨大的问题。针对燃气电厂机组运行现状,本文通过对PG9171E型燃气轮机机组采用实际运行数据分析和仿真建模计算的方法,重点研究了燃气轮机入口空气温度调整对联合循环机组部分负荷工况性能的影响。根据研究结果,提出了一种利用燃气联合循环系统低品位余热作为热源的燃气轮机联合循环进气加热部分负荷提效技术,并对该技术在我国不同型号燃气轮机机组上的技术应用进行了分析。研究结论和实践结果表明,本文所述的燃气轮机部分负荷进气加热技术系统简洁,系统改造附加进气压损较小,能够适用于我国大部分在运燃气联合循环机组,并且能够显著提高联合循环部分负荷工况的运行效率。 相似文献
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燃气轮机进气制冷装置的理论依据和实际效能 总被引:1,自引:0,他引:1
从燃气轮机的循环比功和有用功系数的理论分析可知,降低燃气轮机进气温度,对提高燃气轮机出力和热效率起到事半功倍的作用。深圳金岗电厂PG6531B型50MW燃气-蒸汽联合循环机组,利用余热锅炉烟气的余热采用溴化锂制冷机组,降低燃气轮机进气温度,使联合循环机组实际出力提高3500kW,热效率提高2%,取得了可观的经济效益。 相似文献
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《节能》2020,(2):100-103
IGCC电站有2台9E合成气燃气轮机及相应的余热锅炉,由于余热锅炉已经安装了SCR脱硝设备,余热锅炉换热面积偏小,导致余热锅炉排烟温度偏高。为了深度利用燃气轮机余热锅炉的排烟余热,计算了合成气燃气轮机余热锅炉在正常运行条件下可以进一步回收的排烟热量及排烟余热深度利用的可行性,通过在余热锅炉烟囱外部布置环形受热面的方法,加热除盐水,实现燃气轮机排烟余热的深度利用。当余热锅炉的排烟温度由原来的200℃降低到100℃时,可以减少除氧器热力除氧蒸汽51 t/h,同时由于燃气轮机排气压力升高,燃气轮机发电量减少480.2 kWh,每年总收益为5 605.9万元,节能效果显著。 相似文献
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针对拆迁的PG6561B型燃气轮机联合循环机组进行天然气燃料系统、干式低氮燃烧技术和余热锅炉尾部烟气利用等一系列改造,使机组满足环保要求,并充分利用余热,实现热-电-冷3联供,提升热电厂工艺系统的热效率. 相似文献
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在完成了390MW燃气-蒸汽联合循环机组燃气轮机安装和调试的基础上,本文简要介绍了V94.3A型燃机的特点,并总结了其调试程序和在调试过程中遇到的问题.本文可为建立燃机调试标准提供参考. 相似文献
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为了对未来混氢燃气轮机的运行提供相关的基础数据与理论指导,研究了向甲烷中添加H2对9F级燃气-蒸汽联合循环机组效率的影响。基于Aspen Plus软件建立了联合循环模型,其中燃气轮机模型以PG9351FA型燃气轮机为基础,蒸汽轮机模型中的余热锅炉采用三压再热结构。并对燃气轮机、蒸汽轮机和联合循环的输出功率以及效率等进行了分析。结果表明:随着燃料中H2质量分数由0增加到100%,燃气轮机输出功率增加了5.02%,效率增加了1.3%;蒸汽轮机输出功率增加了0.59%,但是蒸汽轮机效率却减小了2.9%;同时,联合循环输出功率增加了3.43%,效率增加了1.2%,因此向甲烷中掺混H2可以提高燃气-蒸汽联合循环机组的经济性。 相似文献
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Analysis of parameters affecting the performance of gas turbines and combined cycle plants with vapor absorption inlet air cooling 下载免费PDF全文
The integration of an aqua‐ammonia inlet air‐cooling scheme to a cooled gas turbine‐based combined cycle has been analyzed. The heat energy of the exhaust gas prior to the exit of the heat recovery steam generator has been chosen to power the inlet air‐cooling system. Dual pressure reheat heat recovery steam generator is chosen as the combined cycle configuration. Air film cooling has been adopted as the cooling technique for gas turbine blades. A parametric study of the effect of compressor–pressure ratio, compressor inlet temperature, turbine inlet temperature, ambient relative humidity, and ambient temperature on performance parameters of plants has been carried out. It has been observed that vapor absorption inlet air cooling improves the efficiency of gas turbine by upto 7.48% and specific work by more than 18%, respectively. However, on the adoption of this scheme for combined cycles, the plant efficiency has been observed to be adversely affected, although the addition of absorption inlet air cooling results in an increase in plant output by more than 7%. The optimum value of compressor inlet temperature for maximum specific work output has been observed to be 25 °C for the chosen set of conditions. Further reduction of compressor inlet temperature below this optimum value has been observed to adversely affect plant efficiency. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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燃气轮机是21世纪乃至更长时间内能源高效转换与洁净利用系统的核心动力装备.介绍了燃气轮机的发展现状及其在热电联产工程中的应用,简述了联合循环和简单循环燃气轮机电厂的基本组合方式,并列举了目前应用在热电联产工程中的几种主要的燃气轮机.阐述了燃气轮机相对于常规火电机组的优点,分析了影响燃气轮机在热电联产工程中推广的因素,并对我国燃气轮机的发展前景进行了展望. 相似文献
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In this paper, exergy method is applied to analyze the gas turbine cycle cogeneration with inlet air cooling and evaporative aftercooling of the compressor discharge. The exergy destruction rate in each component of cogeneration is evaluated in detail. The effects of some main parameters on the exergy destruction and exergy efficiency of the cycle are investigated. The most significant exergy destruction rates in the cycle are in combustion chamber, heat recovery steam generator and regenerative heat exchanger. The overall pressure ratio and turbine inlet temperature have significant effect on exergy destruction in most of the components of cogeneration. The results obtained from the analysis show that inlet air cooling along with evaporative aftercooling has an obvious increase in the energy and exergy efficiency compared to the basic gas turbine cycle cogeneration. It is further shown that the first-law efficiency, power to heat ratio and exergy efficiency of the cogeneration cycle significantly vary with the change in overall pressure ratio and turbine inlet temperature but the change in process heat pressure shows small variation in these parameters. 相似文献
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The Kuwaiti Ministry of Electricity and Water installed 16 gas turbine (GT) units of 2000 MW total generating capacity at Azzour South power plant (PP) and Sabbyia PP. These units are operating as a simple GT cycle by gas or oil fuel. The GT unit power output in Azzour PP is 163 MW at 15 °C ambient temperature (ISO conditions), and 125 MW at 46 °C (design outside air conditions). This paper suggests four variants for better utilization of these GT units. The first variant is to utilize these GT during off-peak hours to operate seawater reverse-osmosis desalting system. This increases the badly needed installed desalting capacity, decreases the specific energy consumed for desalting, and solves the problem of low water-to-power production ratio. The second variant is to add heat recovery steam generator to produce steam. This steam is used to operate multi-stage flashing units for more desalted water with no additional fuel energy. In the third variant, a gas/steam combined cycle is proposed to increase significantly both the installed capacity and efficiency. The fourth variant deals with cooling intake air to the compressor to increase the unit capacity when needed in hot days. 相似文献
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为了提高能源利用效率,提高经济效益和环境效益,燃气一蒸汽联合循环热电联产系统已受到广泛的关注,目前国内大部分的联合循环机组均要求热电联供,为工业用汽或城市采暖提供蒸汽。本文介绍了东方汽轮机/三菱重工M701F4燃气轮机“二拖一”联合循环热电联供系统及其特点,分析了供热设计条件下该系统的热电负荷特性,供工程设计和电厂运行参考。 相似文献
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