整体煤气化联合循环发电技术进展

通过对５大典型技术（ＭＧＣＣ天然气联合循环、ＰＣ＋ＦＧＤ煤粉炉＋烟气处理装置、ＡＦＢＣ常压循环流化床、ＰＦＢＣ增压循环流化床和ＩＧＣＣ整体煤气化联合循环）的经济性和环保性能比较，认为ＩＧＣＣ发电技术由于其效率高、对煤种适应性广，且利用脱硫和氧气氧化，环保指标好、副产品可再利用不会造成二次污染等特点，是２１世纪最有发展前任的一种清洁发电技术。     

龙湾发电厂300MW燃气—蒸汽联合循环热机专业设计特点

本文对龙湾发电厂300MW燃气－蒸汽联合循环的系统，设备选择，启动运行特点和主厂区布置进行了阐述和分析。     

动力循环研究的新近概貌及未来的发展动向

本文概述了大型动力循环研究领域的基本面貌和最新进展;对动力循环研究的未来发展方向进行了扼要介绍。     

燃气—蒸汽联合循环城市小区热电冷联供——我国利用天然气的理想途径

我国开发利用清洁能源天然气的时代即将来临，本文就用气途径的选择进行了探讨，指出采用联合循环热电（冷）联供系统利用天然气是在能源利用和环保效益上都非常合理和现实的用气途径，在经济性方面也合理可行，应积极而慎重地加紧试点和推广，本文较详细地探讨了这方面的问题，对我国开发天然气的利用具有一定指导意义。     

燃气轮机技术的发展与应用

结合国外燃气轮机的研发及应用情况,综述了先进燃气轮机及其联合循环的技术进展，探讨了燃气轮机在我国的应用前景，特别是在即将到来的西部大开发中的应用，提出了我国发展燃气轮机工业的对策及相应的西部能源开发政策的建议。     

Kalina循环可增加功率25%提高净效率3%

利用７ＦＡ燃气轮机和再热三压蒸汽循环构成的常规联合循环电厂的功率为２５０ＭＷ，效率５５％；但组成Ｋａｌｉｎａ联合循环电厂，其额定功率可达３１０ＭＷ，效率为５８％     

核电与燃气轮机联合循环相组合的发电方式——TD循环技术

本文简要介绍美国太平洋西北实验室贝特尔研究所新开发研究的一种技术——用燃气轮机联合循环改造核电站的 Ｔ Ｄ 循环。并根据我国“九·五计划”和“２０１０ 年规划”，建议走核电与燃气轮机联合循环发电相组合的道路，既能提高核电的设备容量利用率，又能促进我国大型燃气轮机的生产发展。     

不同的燃气轮机调控方案对燃气—蒸汽联合循环电站性能的影响

以某燃气－蒸汽联合循环电站的主要配置 基础,计算并分析比较了在改变燃料 量和调节压气机可转导叶等不同调控方案对燃气－蒸联合循环各3个组成部分及总体性能的影响,从而为燃气－蒸汽联合循环电站合理选择燃气轮机调控方案提供有意义的参考。     

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。     

燃气-蒸汽联合循环电站机组配置及选型分析

对联合循环电站燃气轮机选型、蒸汽系统的选择、余热锅炉和汽轮机选型、机组轴系配置、动力岛布置、主要辅助设备的选择等方面进行了分析研究,为联合循环电站的设计和研究方向提供了建议。     

Engineering design and exergy analyses for combustion gas turbine based power generation system

This paper presents the engineering design and theoretical exergetic analyses of the plant for combustion gas turbine based power generation systems. Exergy analysis is performed based on the first and second laws of thermodynamics for power generation systems. The results show the exergy analyses for a steam cycle system predict the plant efficiency more precisely. The plant efficiency for partial load operation is lower than full load operation. Increasing the pinch points will decrease the combined cycle plant efficiency. The engineering design is based on inlet air-cooling and natural gas preheating for increasing the net power output and efficiency. To evaluate the energy utilization, one combined cycle unit and one cogeneration system, consisting of gas turbine generators, heat recovery steam generators, one steam turbine generator with steam extracted for process have been analyzed. The analytical results are used for engineering design and component selection.     

Efficiency improvement and superiority of steam injection in gas turbines

An open cycle gas turbine with a heat exchanger and its modifications have been studied. These modifications include the combinations of the gas turbine with a steam injection system and the gas turbine with a closed cycle steam turbine. The steam is generated by a waste heat boiler. It was found that in both cases the efficiency and the net output of the gas turbine increased considerably, of the order of 20–40%. In order to define the superiority regions of the systems studied on various ranges of power output, an economic analysis per unit power has been done. For short duration, intermittent type of operation the steam injection was found superior. Above this mode of operation, the operational modes of electric base and continuous were covered by the gas turbine combined with the steam turbine.     

Improvement of part load efficiency of a combined cycle power plant provisioning ancillary services

According to the type of ancillary service provisioned, operation mode of a power plant may change to part load operation. In this contribution, part load operation is understood as delivering a lower power output than possible at given ambient temperature because of gas turbine power output control. If it is economically justified, a power plant may operate in the part load mode for longer time. Part load performance of a newly built 80 MW combined cycle in Slovakia was studied in order to assess the possibilities for fuel savings. Based on online monitoring data three possibilities were identified: condensate preheating by activation of the currently idle hot water section; change in steam condensing pressure regulation strategy; and the most important gas turbine inlet air preheating. It may seem to be in contradiction with the well proven concept of gas turbine inlet air cooling, which has however been developed for boosting the gas turbine cycles in full load operation. On the contrary, in a combined cycle in the part load operation mode, elevated inlet air temperature does not affect the part load operation of gas turbines but it causes more high pressure steam to be raised in HRSG, which leads to higher steam turbine power output. As a result, less fuel needs to be combusted in gas turbines in order to achieve the requested combined cycle’s power output. By simultaneous application of all three proposals, more than a 2% decrease in the power plant’s natural gas consumption can be achieved with only minor capital expenses needed.     

燃机电厂9F型机组热电负荷优化分配研究

电厂热电负荷优化分配是指在全厂总调度负荷下,根据各机组的热力性能确定各机组应承担的热电负荷,使得全厂效益最大或能耗最小的一种最优化问题.不同于燃煤热电厂,燃机电厂9F型机组由于设计为燃气轮机加蒸汽轮机的组合方式运行,因此在联合循环热力性能模型建立上较为复杂.提出了将余热锅炉新蒸汽参数作为中间变量,建立了机组天然气燃料消耗与电负荷、热负荷之间的关系模型,确定了优化计算的目标函数和边界约束条件,并采用非线性规划方法求解.模拟与实际运行结果均表明,该优化分配方法能有效降低燃机电厂燃料消耗水平,可以为同类型燃机电厂热电负荷优化分配提供参考.     

复杂循环燃气轮机装置在舰船中的应用

叙述了ＷＲ－２１中间冷却回热式燃气同和基于燃气轮机的燃蒸联合循环动力装置的研制和应用情况。简要介绍了前苏联,美国和英国在这方面所做的工作。指出,作为两种高效节能的动力装置,ＷＲ－２１和ＣＯ－ＧＡＳ装置具有一系列的优点,它们是应用于军舰和商船的较为理想的动力装置。     

Water and steam injection in micro gas turbine supplied by hydrogen enriched fuels: Numerical investigation and performance analysis

This paper investigates the energetic and environmental performance of micro gas turbine plant with two proposed concurrent improvements: the methane-based fuel enriched by hydrogen and the humidification of the plant cycle. The energetic and environmental benefits of both features are well-know, and the aim of this work is the analysis of their combined impact on the micro gas turbine operation. Despite enhancing fuel with H₂ involves significant advantages like greenhouse emission reduction and a better combustion in case of low LHV fuels, most of commercial micro gas turbine combustors are not able to burn fuels with high hydrogen content unless structurally modified. On the contrary, has been demonstrated that humidified gas turbines (i.e., gas turbines with water injection, humid air turbine (HAT) and steam injection gas turbine (STIG) cycles) improve the combustion stability as well as electric power delivered and plant efficiency. Hence, in order to investigate the feasibility of the concurrent two features, the first step of this work was the thermodynamic analysis of a micro gas turbine supplied by methane-based fuels enriched with H₂ up to 20%_vol, considering both dry and humidified cycles. Since a combustion anomaly was detected, i.e., flashback, in the CFD study on the combustion chamber, a steam injection in the combustor has been added in the plant layout with the aim of overcoming the anomaly, and its effect on the combustion process has been analyzed also raising the hydrogen content up to 30%_vol. The main outcome of this paper is the assessment of the feasibility of supplying the combustor of the proposed HGT-STIG micro gas turbine with a hydrogen enrichment up to 30%_vol, achieving a safe and regular combustion mainly owing to a steam injection mass flow equal up to 125% of fuel flow.     

AE94.3A型燃气轮机进气冷却的应用可行性研究

对AE94.3A型燃气轮机燃气-蒸汽联合循环热力系统平衡进行研究进而发现,与同类型、同等级不同型号机组相比,AE94.3A型联合循环机组余热锅炉的排烟温度较高,排烟余热仍有进一步利用的空间。通过设计优化,扩大省煤器受热面,回收烟气余热加热给水,驱动热水型溴化锂制冷机制冷,用于机组满负荷调峰时的压气机进气冷却或厂房及办公区域空调供冷,对改善燃气轮机联合循环的运行性能,实现能源梯级利用,提高能源利用率和机组经济性运行起到了很大作用。