生物质气微型燃气轮机运行性能分析

为研究生物质气微型燃气轮机的运行性能,构建了微型燃气轮机模型。基于C60微型燃气轮机的设计数据,首先以天然气为燃料,验证了模型的合理性。然后以沼气、松木气和干牛粪气等生物质气为燃料,在机组输出功率为60 kW及燃烧室出口温度为1 145 K两个工况分别得到燃气轮机的主要输出参数。结果表明：维持燃气轮机输出功率为60 kW时,所需生物质气流量增大,燃烧室出口温度降低,压比增大,压气机耗功减少,机组效率提高;维持燃烧室出口温度为1 145 K,燃料流量增加,引起燃气流量增大,透平的输出功增多,机组输出功率和机组效率增大;燃料初温从300 K升高到700 K,当保持额定输出功率时随着燃料初温上升机组热效率增大;当保持额定燃烧室出口温度时,随着燃料初温上升燃料流量减少,机组输出功率和机组热效率降低。     

微型燃气轮机外燃循环的分析

介绍了微型燃气轮机结构及其回热循环,阐述了微型燃气轮机的外燃循环的结构和特点,以及外燃循环在可再生能源利用方面的贡献,并采用MATLAB软件建立了以生物沼气为燃料的微型燃气轮机外燃循环的数学模型,对其在额定工况和变工况下进行了稳态分析,给出了各个运行参数对其性能的影响曲线和最佳运行曲线.结果表明:与采用天然气为燃料的回热循环相比,微型燃气轮机外燃循环具有较好的热经济性,在变工况下保持了较高的热效率,发电效率可达到30%左右,为可再生能源在热电联供中的应用提供了一种有前途、高效和廉价的供能方式.     

浅议燃机用液体燃料的质量调控

燃料的质量直接关系到燃气轮机的使用寿命及设备的效率，而燃料中所含各种杂质，有的以离子态、有的以有机高分子胶团、有的以水溶性、有的以油溶性等形态存在于油中；这将给燃料质量的调整控制带来诸多麻烦，本文以华能汕头燃机电厂的ＭＳ６００１型燃气轮机对燃料的质量要求，结合多年来运行经验，提出燃料质量的调整控制方法与读者共同探讨。     

生物质气为燃料微型燃气轮机运行的仿真模拟分析

将某公司的微型燃机作为研究对象,使用仿真模拟方法对将生物质气作为燃料研究燃料微型燃气轮机运行的可行性。通过仿真模拟表示,此燃机不能够燃烧低热值棉柴气和稻草气,所以也就无法同时有效满足透平入口温度、压气机喘振裕度的需求。燃用高热值沼气和木片气的时候,微型燃机能够安全地运行。基于此,对微型燃机无法燃烧低热值燃料的问题提出了压气机改进的方案,此方案能够有效提高低热值燃料燃用时压气机透平入口及喘振裕度,使微型燃气轮机能够安全、有效地运行。     

低热值燃料对微型燃气轮机运行特性的影响

生物质气具有热值低、可燃成分不同的特点,这种特点导致生物质气在微型燃气轮机上的应用存在问题.为天然气设计的微型燃气轮机应用低热值燃料时,会导致工质流量和热力学特性的变化,从而导致燃气轮机运行特性的变化.为将这种低热值燃料应用于微型燃气轮机,提出了几种对微型燃气轮机进行调整和改进的方法,使微型燃气轮机能适应这种低热值的燃料.应用数学模型,计算出了在应用这些方法后对微型燃气轮机运行特性的影响.结果表明,应用低热值燃料后微型燃气轮机的运行特性会发生明显的改变,在调节和改进方法中对压气机和透平进行改进以适应新的流量匹配是最适合的方法.除匹配外,还提出了一些应用低热值燃料有待解决的问题.     

燃气轮机通过燃煤试验

燃气轮机有史以来局限于燃烧诸如天然气和油等清洁燃料,Allison Gas Turbine巳成功地试验了在4MW燃气轮机上用细粉煤和水的混合物作燃料。在试验期间透平长期运行而没有损坏,证实燃用煤不久将成为现实可能。     

燃气轮机燃料预热器的设计及经济性分析

利用燃气轮机性能仿真模型,分析燃气轮机效率、预热器成本和污染物排放量对燃气轮机经济性的影响。针对某型号单轴燃气轮机,设计一个燃料预热器。考虑压损,仿真出效率随燃料温度的变化,拟合出效率、预热器成本和污染物排放量与预热器等效换热面积的关系,并将其转化为燃气轮机运行总收支,分析燃气轮机的经济性。结果表明,当等效换热面积为1 m2,燃料温度为180℃时,案例中燃气轮机节省的收益最多,为15万元。在保证燃气轮机安全、可靠性的前提下,优化运行收支,可实现燃气轮机经济效益的最大化。     

生物油燃烧技术研究进展

生物油可以在锅炉中单独燃烧或者与化石燃料混合燃烧用于供热和发电,可以与乙醇、甲醇和柴油等混合燃烧以驱动柴油机发电,也可以直接应用于燃气轮机中.文章分析了由于生物油燃料特性的限制而引起的燃烧应用问题和相应的解决方法.分析表明,生物油与化石燃料在锅炉和燃气轮机中混合燃烧最具有大规模应用的可能性,在柴油机中燃烧是最有开发前景的应用技术.     

某燃气轮机焦炉气喷嘴的数值模拟研究

某燃气轮机作为联合循环电厂的主发电装置,以天然气为燃料,度电成本为0.720元/(kW·h).为了降低该燃气轮机的度电成本,提高运行经济性,拟改用焦炉气为燃料.本文通过计算,得出以焦炉气为燃料的度电成本仅为0.350元/(kW·h),比使用天然气为燃料的度电成本降低了51.4％.进而为了实现燃气轮机由天然气改烧焦炉气,...     

日本高效燃气轮机开发应用简介

日本高效燃气轮机开发应用简介国家计委老干部局郭廷杰一、开发目的为提高热效率燃气轮机发电是以油、气为燃料的一种火力发电方式，它由空气压缩机、燃烧器、膨胀透平和发电机所组成。压缩机将空气加压后送入燃烧器与送来的燃料混合后燃烧，产生的高温气体推动两级膨胀透...     

Bio-fuels for the gas turbine: A review

Due to depletion of fossil fuel, bio-fuels have generated a significant interest as an alternative fuel for the future. The use of bio-fuels to fuel gas turbine seems a viable solution for the problems of decreasing fossil-fuel reserves and environmental concerns. Bio-fuels are alternative fuels, made from renewable sources and having environmental benefit. In recent years, the desire for energy independence, foreseen depletion of nonrenewable fuel resources, fluctuating petroleum fuel costs, the necessity of stimulating agriculture based economy, and the reality of climate change have created an interest in the development of bio-fuels. The application of bio-fuels in automobiles and heating applications is increasing day by day. Therefore the use of these fuels in gas turbines would extend this application to aviation field. The impact of costly petroleum-based aviation fuel on the environment is harmful. So the development of alternative fuels in aviation is important and useful.The use of liquid and gaseous fuels from biomass will help to fulfill the Kyoto targets concerning global warming emissions. In addition, to reduce exhaust emission waste gases and syngas, etc., could be used as a potential gas turbine fuel. The term bio-fuel is referred to alternative fuel which is produced from biomass. Such fuels include bio-diesel, bio-ethanol, bio-methanol, pyrolysis oil, biogas, synthetic gas (dimethyl ether), hydrogen, etc. The bio-ethanol and bio-methanol are petrol additive/substitute. Bio-diesel is an environment friendly alternative liquid fuel for the diesel/aviation fuel.The gas turbine develops steady flame during its combustion; this feature gives a flexibility to use alternative fuels. Therefore so the use of different bio-fuels in gas turbine has been investigated by a good number of researchers. The suitability and modifications in the existing systems are also recommended.     

GT13E2燃气轮机爆炸事故分析及改进措施

就1台GT13E2型燃气轮机发生的一起燃烧室及排气烟道爆炸事故进行了详细的分析,认为在控制油压力消失和燃烧室熄火的情况下,燃气轮机仍然不能发出跳机指令,进而在燃气轮机转速下降过程中发电机低频保护动作断开主变高压侧断路器,造成厂用电丢失,导致燃气轮机在燃油系统的事故水冲洗过程中发生爆炸。指出了爆炸的原因是由于制造厂燃气轮机控制系统逻辑及控制油管道设计错误,爆炸是设计错误发展的必然结果,以及事故处理和预防措施。     

SAYVOL_EC2燃油全能增效剂掺入重油在燃气轮机上的燃烧试验

ＳＡＹＶＯＬ－ＥＣ２是英国塞维尔化学有限公司（ＳＡＹＶＯＬ ＣＨＥＭＩＣＡＬＳ ＬＴＤ）研制的燃油全能增效剂。文中给出了常规镁盐抑钒剂和ＳＡＹＶＯＬ－ＥＣ２添加剂分别掺入重油在燃气轮机燃烧试验台的对比燃烧试验结果。试验结果初步表明：ＳＡＹＶＯＬ－ＥＣ２燃油全能增效剂在燃烧效率、抑钒、降ＮＯｘ等方面都优于常规镁盐抑钒剂。     

9E燃机燃油控制系统故障分析及优化

分析了9E燃机燃油控制设备运行中多次发生的偶然性故障，提出了提高9E燃机燃油系统可靠性的途径及相应的控制技术改进方案。     

PG9171E 燃机改用双燃料系统的探讨

本文介绍了PG9171E燃气轮机机组成功地由重油改为天然气及双燃料运行的技术方案和经验,为国内其他燃气轮机电厂"油改气"技术改造项目提供了一些借鉴和指导。     

Thermodynamic and economic optimization of a MCFC-based hybrid system for the combined production of electricity and hydrogen

In this paper, a biogas fuelled power generation system is considered. The system is based on a molten carbonate fuel cell (MCFC) stack integrated with a micro gas turbine for electricity generation, coupled with a pressure swing absorption system (PSA) for hydrogen production.     

Performance evaluation of a constant speed IC engine on CNG,methane enriched biogas and biogas

This paper presents the performance results of a 5.9 kW stationary diesel engine which was converted into spark ignition mode and run on compressed natural gas (CNG), methane enriched biogas (Bio-CNG) and biogas produced from biomethanation of jatropha and pongamia oil seed cakes. The performance of the engine with 12.65 compression ratio was evaluated at 30°, 35° and 40° ignition advance of TDC. The maximum brake power produced by the engine was found at ignition advance of 35° TDC for all the tested fuels. In comparison to diesel as original fuel, the power deteriorations of the engine was observed to be 31.8%, 35.6% and 46.3% on compressed natural gas, methane enriched biogas and raw biogas, respectively, due to its conversion from CI to SI mode. The methane enriched biogas showed almost similar engine performance as compared to compressed natural gas in terms of brake power output, specific gas consumption and thermal efficiency.     

PG9171E型燃气轮机负荷波动故障的分析

描述我厂#1燃气轮机在重油70MW负荷以上时出现负荷波动的现象,结合液体燃料系统对故障原因和处理措施等作了分析与阐述。     

Comparative assessment of a biogas run dual fuel diesel engine with rice bran oil methyl ester,pongamia oil methyl ester and palm oil methyl ester as pilot fuels

The present study tries to explore the potential of three different types of biodiesel viz. Rice bran oil methyl ester (RBME), Pongamia oil methyl ester (PME) and Palm oil methyl ester (POME) as pilot fuels for a biogas run dual fuel diesel engine designed for power generation. The results indicated that under dual fuel mode, RBME-biogas produced a maximum brake thermal efficiency of 19.97% in comparison to 18.4% and 17.4% respectively for PME-biogas and POME-biogas at 100% load. The emission study divulged that under dual fuel mode, on an average, there was an increase of CO emission by 25.74% and 32.58% for PME-biogas and POME-biogas, respectively in comparison to RBME-biogas. Furthermore, on an average, the HC emissions for PME-biogas and POME-biogas increased by 11.73% and 16.27%, respectively in comparison to RBME-biogas. On the other hand, on an average, there was a decrease in NO_X emission by 5.8% and 14%, respectively for PME-biogas and POME-biogas respectively in comparison to RBME-biogas.