9FA燃气轮机作为电网"黑启动"电源点的探讨

S109FA联合循环组在启动、加负荷的快速性上基本能满足电网“黑启动”的要求;当整个电网因故障停运后,9FA燃气轮机作为“黑启动”电源点的启动,需要启动电源和辅助蒸汽,用配备一套小功率的燃气轮机联合循环机组可以解决。即:用9FA燃气轮机配备的自动柴油发电机来启动小功率的燃气轮机联合循环机组,然后再逐渐完成“黑启动”,向外恢复供电。还分析了9FA燃机在“黑启动”时可能遇到的问题及对策。     

武汉沌口燃气轮机电厂运行经济性分析

结合武汉沌口燃机电厂燃气轮机联合循环机组运行情况,对影响联合循环机组效率的因素进行了分析,并提出了一些提高机组效率的方法。     

联合循环热力系统优化研究

基于某F级燃机组成的燃气-蒸汽联合循环热力系统,分析了三压再热汽轮机各段主蒸汽压力对联合循环性能的影响,找到配合该F级燃气轮机的最优的各段主蒸汽压力,为联合循环汽轮机的优化设计提供参考.     

小型燃气轮机在中小型钢厂的应用

本文参照三菱的M251s型(SOMW)BFP燃气轮机在邯郸钢铁公司的燃气一蒸汽联合循环项目中的应用，从BFG为燃料的联合循环电厂的特点，三菱在BFG用燃机采取的技术改造以及联合循环系统运行和经济效益分析等方面重点讨论了小型燃机在钢铁企业中的应用。     

SGT5-2000E(LC)IGCC燃气轮机结构介绍

简要介绍整体煤气化联合循环(IGCC)发电技术,并通过对燃用中低热值合成煤气的燃机会发生的一些特殊问题进行分析,重点介绍西门子用于整体煤气化联合循环(IGCC)的E级SGT5-2000E(LC)燃气轮机是如何通过本体结构设计上改进,使原燃烧天然气的燃气轮机可以高效地燃烧合成煤气.     

重型燃气轮机新型罩壳系统介绍

文章通过对重型燃机和普通汽轮机组各自不同运行要求的对比,提出了新型重型燃气轮机的罩壳设计方案,进而对F级重型燃机- 蒸汽联合循环热电联产发电机组的新型罩壳系统的组成及功能做了详细介绍.     

燃气轮机性能对联合循环电站经济性的影响

利用Thermoflex软件模拟了具有不同燃气初温和压比的燃气轮机,并用模拟的燃气轮机设计联合循环电站.采用燃气轮机维护费用因子对选用不同燃气轮机电站的经济性进行计算,并对天然气价格提高的情况也进行了讨论.目的是分析燃气轮机燃气初温提高引起的成本和维护费用增加对电站经济性的影响.分析结果表明：采用更高初温的燃气轮机的联合循环电站并不一定具有更高的经济性.所得结果可作为联合循环电站燃气轮机选型的参考.图9表3参4     

联合循环电站变工况计算的实例应用

根据燃气轮机、余热锅炉和蒸汽轮机等关键部件的理论计算模型,以Corex煤气匹配的联合循环为例,对该联合循环进行额定工况及变工况计算,得出燃用Corex煤气选用的9E联合循环发电机组方式是合理、高效的,并指出燃机因燃料热值变化而导致机组变工况运行的调整和优化方法.     

余热锅炉积灰问题的解决方法

燃气轮机单循环发电,由于高温排气损失的热量多而导致循环效率下降,常改为燃机 余热锅炉 蒸汽轮机组成的联合循环发电机组,以提高整个电厂的热效率。我国大多数燃机电厂都是燃用柴油,而柴油有轻油和重油之分,烧重油燃机的余热锅炉,因重油本身灰分、杂质以及为处理重油中钒等金属成份而加入的有机镁抑制剂,使余热锅炉受热而严重积灰,导致产汽量大幅下降。同时积灰严重大大增加了燃机背后,使燃机出力也大幅下降,因此解决烧重油的燃机余热锅炉的积灰问题是燃气—蒸汽联合循环电厂的重要技术课题。目前,国内外解决烧重油燃机余热锅炉的积灰主要…     

PG9171E型燃机进气加热对联合循环性能影响分析

以天津某PG9171E型燃机电厂为研究对象,根据系统热平衡方程为理论依据建立数学模型。利用Aspen Plus软件建立电厂的物理模型,分析燃机进气加热温度对联合循环中的燃气轮机、余热锅炉、汽轮机主要参数的影响。结果表明,随着进气温度的提升,燃机功率和联合循环系统总功率降低;燃机排气温度和余热锅炉排烟温度升高;汽轮机的功率及效率几乎不变。本研究的结论可以为燃气-蒸汽联合循环的设计提供理论参考。     

国外燃气轮机及联合循环电厂设备预算价格水平分析

结合国外几家主要大公司的燃气轮机及联合循环设备价格资料的汇总,进行综合列表和作图分析,得出清晰的概貌,利于电厂项目的计划、设计和建设。     

提高燃气轮机联合循环电站性能的优化方法

天然气联合循环机组因启停快、运行灵活性好、热效率高、排放清洁、建造周期短而倍受中国市场青睐.围绕如何通过燃气轮机进气系统、主机参数匹配、汽轮机冷端等参数优化来提高联合循环热效率是国内外学者研究的热点.以配有目前市场上最高性能等级燃气轮机的联合循环为研究对象,建立了以提高联合循环热效率为目标的热力计算和分析模型,提出了各段蒸汽压力及温度参数优化匹配方法,并进一步分析、讨论了燃料预热对联合循环热效率的影响.在综合考虑余热锅炉换热温差、汽轮机结构设计等制约因素下得到了一组蒸汽循环的优化参数配置.计算结果表明,相比直接沿用上一代蒸汽循环参数,使用该优化参数配置可大幅度提高联合循环效率,并且使用燃料预热可使循环性能得到进一步改善.     

Energy and exergy analyses of a CFB‐based indirectly fired combined cycle power generation system

Combined cycle configuration has the ability to use the waste heat from the gas turbine exhaust gas using the heat recovery steam generator for the bottoming steam cycle. In the current study, a natural gas‐fired combined cycle with indirectly fired heating for additional work output is investigated for configurations with and without reheat combustor (RHC) in the gas turbine. The mass flow rate of coal for the indirect‐firing mode in circulating fluidized bed (CFB) combustor is estimated based on fixed natural gas input for the gas turbine combustion chamber (GTCC). The effects of pressure ratio, gas turbine inlet temperature, inlet temperatures to the air compressor and to the GTCC on the overall cycle performance of the combined cycle configuration are analysed. The combined cycle efficiency increases with pressure ratio up to the optimum value. Both efficiency and net work output for the combined cycle increase with gas turbine inlet temperature. The efficiency decreases with increase in the air compressor inlet temperature. The indirect firing of coal shows reduced use with increase in the turbine inlet temperature due to increase in the use of natural gas. There is little variation in the efficiency with increase in GTCC inlet temperature resulting in increased use of coal. The combined cycle having the two‐stage gas turbine with RHC has significantly higher efficiency and net work output compared with the cycle without RHC. The exergetic efficiency also increases with increase in the gas turbine inlet temperature. The exergy destruction is highest for the CFB combustor followed by the GTCC. The analyses show that the indirectly fired mode of the combined cycle offers better performance and opportunities for additional net work output by using solid fuels (coal in this case). Copyright © 2009 John Wiley & Sons, Ltd.     

对9FA燃气轮机联合循环机组性能试验的思考

对9FA燃机联合循环性能试验中的一些问题进行了分析,如性能的修正、余热锅炉的性能考核、责任分摊等,并给出了作者的看法,供同行参考。     

Analysis of a gas turbine and steam turbine combined cycle with liquefied hydrogen as fuel

The performances of a combined cycle driven by the liquid hydrogen are discussed. The cycle consists of a gas turbine with a pre-cooler system and a steam turbine heated by the exhaust energy of gas turbine. The liquid hydrogen has not only chemical but cryogenic exergy. The latter is about 10% of the total exergy and is converted to the useful work through the pre-cooling system and an auxiliary hydrogen turbine. The specific output and thermal efficiency of the combined cycle are much higher than those of a simple cycle gas turbine, but in order to operate the combined cycle successfully, it is necessary to check the pinch point which may take place in the boiling process which is heated by the exhaust energy of the gas turbine.     

Comparative feasibility study of combined cycles for marine power system in a large container ship considering energy efficiency design index (EEDI)

This study investigates an appropriate combined cycle as the electric propulsion system in a large container ship. A gas turbine combined cycle and molten carbonate fuel cell-steam turbine cycle are considered; the gas turbine uses LNG or hythane fuels. Because it is difficult to choose an appropriate propulsion system from only one perspective, comprehensive and unbiased analyses refer to the system performance, eco-efficiency, and economic feasibility for three configurations. An LNG-fueled COGES (combined gas turbine and steam integrated electric drive system) seems to be a promising alternative with regards to economic feasibility as well as a greenhouse gas regulation. The following alternative is the molten carbonate fuel cell-steam turbine cycle. A hythane-fueled COGES has a relatively low economic feasibility but will be the sole propulsion system if the regulation of greenhouse gas emission from shipping is stringent. On the other hand, the carbon taxation and implementation of an incentive for hydrogen fuel may facilitate a greener shipping environment; the additional eco-friendly policy for the shipping industry needs to be provided, shortly soon.     

蒸-燃联合循环与燃-燃联合循环的模拟和对比

蒸汽-燃气联合循环装置由于其较高的发电效率而被广泛应用于各大、中型电厂。然而,在微小型燃气-蒸汽发电装置中,蒸汽轮机的应用无疑使得装置体积和成本费用大增。因此,本文提出在小型分布式发电装置中,采用环境压力吸热燃气轮机循环（APGC）装置来替代蒸汽轮机装置吸收燃气轮机排出的废气能量,组成燃-燃联合循环,增加系统本身的做功能力和效率,达到节能、减少燃料消耗的目的。本文从热力学第一定律和第二定律出发,基于ASPENPLUS软件分别建立了燃-燃联合循环、蒸-燃联合循环模型,比较分析了两种循环装置在能量质量和数量上的利用程度。结果表明：燃-燃联合循环装置的效率较高,这在要求能源高效利用的今天具有一定的理论意义。     

9000kW燃气轮机_汽轮机联合循环发电装置技术经济分析

以我国自行研制的9000kW燃气轮机为对象,详细分析了9000kW燃气一蒸汽联合循环的现实性和优越性,为我国自行研制的燃气轮机进一步开发联合循环电站找到了可行的途径。     

影响冷热电联产系统经济性因素的灰关联分析

1引言发展天然气冷热电联产项目,对于削减电网的高峰负荷、缓解能源供需矛盾、提高能源综合利用效率、减轻污染,改善环境、降低因燃料调整带来的成本增加十分有利。燃气轮机冷热电联产运行的经济性是系统应用研究的一个重要内容。而影响系统运行经济性的因素是多方面的。如燃气     

退役航空涡扇发动机地面应用的有效途径之一_再热燃气_蒸汽联合循环

本文探讨以退役航空涡扇发动机作为燃气发生器,内函的燃气与外函的空气相掺混。经再热燃烧室加热后进入动力涡轮作功,并且应用余热锅炉回收－部分排气余热,产生蒸汽,驱动汽轮机作功所组成的再热热气－蒸汽联合循环。通过计算实例说明该循环具有输出功率大,循环效率具有相当大的提高等特点。