试验用燃气轮机进气系统结霜分析

试验用燃气轮机与产品燃气轮机在进气系统的构成上有很大区别,功能上也各有侧重。本文以某整机试验项目燃气轮机进气系统为依托,分析了试验用燃气轮机进气系统的结霜机理,并提出了应对恶劣天气时可采取的不同于产品燃气轮机的两种解决方案,这对试验燃机试验规程的编制及控制方案均有一定的指导意义。     

前置模块典型工艺配置及控制

论述了GE公司燃气轮机中9F前置模块的典型工艺配置，并对其各个功能撬作了控制说明，为提高天然气处理系统工艺控制设计水平提供参考。     

燃气轮机伺服系统常见故障及处理措施

空气压缩机燃气轮机伺服控制系统由SUVIMAC-II控制系统改造为TRICON TS3000三冗余控制系统后,出现因燃气轮机控制失调导致超温机组跳车以及伺服调节阀输出与反馈偏差增大、伺服阀保护联锁无法投用的故障,分析两起故障的原因,并提出处理措施,处理后机组运行良好。     

燃气轮机转速保护和波动的分析及处理

针对化肥装置燃气轮机出现转速保护和转速波动的现象，通过分析燃气轮机转速保护控制逻辑，制订并实施了相应的处理措施，取得了良好的效果，并进行了经验总结。     

工业燃气轮机机组运行的优化控制

论述了中原大化集团有限公司投产12年来，燃气轮机机组运行和维护中的一些行之有效的技术优化控制举措，为兄弟单位燃气轮机机组运行维护管理提供借鉴和参考。     

略谈影响燃气轮机性能的几个重要现场参数及性能提高途径

本文以GE MS6001燃气轮机为例,通过对比不同设计条件下的燃气轮机性能指标,分析了几个重要现场参数:环境温度、大气压力、空气湿度以及燃气热值对燃气轮机性能的影响,指出现场环境温度对燃气轮机性能影响最大,可利用压气机进气冷却技术提高燃气轮机性能,燃气轮机制造商应根据现场实际参数选择合适的机组。     

燃气轮机的维护检修探讨

介绍了建峰化肥厂燃气轮机的设计维修特点,影响燃气轮机的维修和使用寿命的因素,以及如何正确确定燃气轮机的维修间隔期,为确定燃气轮机的检修内容、检修周期提供参考.     

艾默生将对塞内加尔Senelec Cap des Biches发电站3#机组的燃气轮机进行升级改造

Cap des Biches发电站位于达喀尔东部23公里处大西洋沿岸地带,发电能力为82MW。艾默生过程管理公司负责将该发电站3~#机组燃气轮机控制系统升级为新的OvationTM控制系统,对燃气轮机实现更加精准可靠的控制,需审计和评估现有控制系统、制订将要替换设备的拆解计划,设计Ovation系统、绘制工程图纸、制订FAT测试计划和调试程序,同时包括安装、调试和操作员培训。     

燃烧过程中的NOx形成机理与控制技术

NOx是大气的一个重要污染源，简述了燃烧中和燃烧后控制NOx技术在各种工业燃烧源中的使用情况，这些燃烧源包括：工业锅炉、加热炉、燃气轮机和内燃机。     

工业燃气轮机主控制系统简介

介绍了用于合成氨一段转化炉燃烧供氧的燃气轮机主控制系统,该系统启动采用开环控制,低压速度采用闭环控制,并对排气温度和二级喷咀进行了有效控制。     

燃气透平控制系统的升级改造

从冗余控制、人机接口HMI、控制功能、保护系统、开车许可和停车联锁等方面介绍了燃气透平操作系统MARK VI的技术特点;简述了控制系统由MARKⅣ升级为MARKⅥ的改造过程和调校方法;分析了升级改造后尚待解决的问题;评述了升级改造的运行效果。结果表明,燃气透平控制系统实现了从CRT到HMI电脑操作,全方位提高了机组的自控水平和操作水平。     

蒸汽喷射在燃气轮机中的应用

主要介绍海南富岛化工有限公司燃气轮机蒸汽喷射系统的原理、流程和控制系统，同时也列出了运行效果对比和改进方案。     

燃气轮机功率影响因素分析及对策

从叶片结垢、入口空气温度、内件老化、漏气、修复件等方面分析影响燃气轮机功率的原因,提出具体解决对策.通过增加空气冷却系统和采取措施降低燃气轮机的功率损失后,保证机组按100%负荷稳定、长周期运行.     

燃气轮机—空压机组的运行管理

分析燃气轮机—空压机组的特点、开停车及正常维护，介绍了四川天华股份公司燃气轮机—空压机组的一些行之有效的运行管理经验。     

工业用燃气轮机运行和检修总结

论述中原大化集团有限公司投产８年来燃气轮机操作控制和设备检修中出现的问题，以及解决的措施。     

工业燃气轮机大修中几个问题的解决

总结MS3 0 0 2型工业燃气轮机大修情况 ,分析检修过程中遇到的技术难题 ,采取有效的解决措施 ,为燃气轮机的检修提供参考     

Combustion performance test of a new fuel DME to adapt to a gas turbine for power generation

Recently, DME (dimethyl ether, CH₃OCH₃) has attracted a great deal of attention as an alternative fuel owing to its easy transportation and cleanliness. This study was conducted to verify the combustion performance and to identify potential problems when DME is fueled to a gas turbine. Combustion tests were conducted by comparing DME with methane, which is a major component of natural gas, in terms of combustion instability, NO_x and CO emissions, and the outlet temperature of the combustion chamber. The results of the performance tests show that DME combustion is very clean but hard to control. The CO emission level of DME is lower than that of methane, while the NO_x emission level of DME is as low as that of methane. When firing DME, the pressure fluctuation in the combustion chamber caused by combustion instability is lower than that occasioned when firing methane. From the results of the outlet temperature of combustor we have ascertained that DME combustion is more likely to flash back than methane combustion and this property should be considered when operating a gas turbine and retrofitting a burner.     

Gas turbine combustion performance test of hydrogen and carbon monoxide synthetic gas

The development of coal IGCC (Integrated Gasification Combined Cycle) technology has made it possible to exploit electricity generated from coal at a low cost. Furthermore, IGCC is a pre-requisite for the development of CCS (Carbon Capture and Storage) technology and hydrogen generated from coal. To achieve the need to reduce CO₂ emissions, Korea’s 300 MW IGCC RDD&D (Research Development, Demonstration and Dissemination) project was launched in December 2006 under the leadership of the Korea Electric Power Corporation (KEPCO), with the support of the Korea Ministry of Knowledge Economy.When a new fuel is adapted to a gas turbine (such as syngas for IGCC), it is necessary to study the gas turbine combustion characteristics of the fuel, because gas turbines are very sensitive to its physical and chemical properties. This experimental study was conducted by investigating the combustion performance of synthetic gas, which is composed chiefly of hydrogen and carbon monoxide. The results of a test on synthetic gas combustion performance were compared with the results of methane combustion, which is a major component of natural gas. The results of the combustion test of both gases were examined in terms of the turbine’s inlet temperature, combustion dynamics, emission characteristics, and flame structure.From the results of this experimental study, we were able to understand the combustion characteristics of synthetic gas and anticipate the problems when synthetic gas rather than natural gas is fuelled to a gas turbine.     

Development of a low NOx catalytic combustor for a gas turbine

Catalytic combustion is an advanced combustion technology and is effective as a NO_x control for a 1300°C class gas turbine for power generation, but the catalyst reliability at high temperatures is still insufficient. To overcome this difficulty, catalytic combustors combined with premixed combustion were designed. In this concept, it is possible to obtain combustion gas at a temperature of 1300°C while keeping the catalyst bed temperature below 1000°C. Catalyst segments are arranged alternately with premixing nozzles for the mixing of catalytic combustion gas and fresh premixture. An air bypass valve was fitted to this combustor for extending the range of stable combustion. As a result of the atmospheric combustion tests, NO_x emission was lower than 5 ppm, combustion efficiency was almost 100%, and high combustion efficiency was obtained in the range of 900–1300°C of the combustor exit gas temperature. A full-pressure combustion test is planned to prove the combustor performance.