燃气轮机压气机清洗技术

介绍了燃气轮机压气机清洗维护的常用清洗剂，清洗方法及其特点，以及工业燃气机所惯用的清洗方法。     

燃气轮机水基清洗剂的研制

经过大量试验验究,立足国产原材料研制出的燃气轮机水基清洗剂的性能指标达到美国军用标准 Ｍ Ｉ Ｌ－ Ｃ－ ８５７０４ Ｂ 的要求,具有清洗效率高、无腐蚀等特点,是燃气轮机压气机清洗的良好清洗剂．     

燃气轮机水基清洗剂的研制

经过大量试验研究，立足国产原材料研制出的燃气轮机基清洗剂的性能指标达到美国军用标准ＭＩＬ－Ｃ－８５７０４Ｂ的要求，具有清洗效率高、无腐蚀等特点，是燃气轮机压气机清洗的良好清洗剂。     

浅谈燃气轮机的清洗方法

由于燃气轮机吸收含有大量灰尘等杂质的空气,会在压气机叶片上形成积垢,从而导致机组出力下降,该文介绍在实际工作中,根据不同的情况使用不同的设备、采取不同的清洗方法来除去压气机叶片上的污垢,以提高整台机组的工作效率.     

GE6B燃机安装关键点控制

通过对伊拉克鲁迈拉油田早期电站(简称EPP)5台GE公司MS6001B型燃气轮机的安装实践,研究和探讨GE燃气轮机的安装方法,总结出GE燃气轮机安装的关键点,为以后的燃机安装提供宝贵经验。     

缩短燃气轮机发电机组油冲洗时间的方法

以伊拉克鲁迈拉150MW早期电站(简称EPP)GE燃气轮机发电机组油冲洗为例,从机组润滑油管线安装、油冲洗准备、油冲洗三个阶段采取有效的施工方法来提高机组油冲洗效率。实践证明采用此类方法可缩短燃气轮机发电机组油冲洗时间,提高燃气轮机发电机组油冲洗质量。     

TS3000在燃气轮机控制系统上的应用

介绍燃气轮机控制系统TRICON TS3000的结构、原理、特点、控制功能及系统组成;分析燃气轮机的启动过程、控制规律和控制技术,说明了实现其控制功能的软件设计方法.     

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。     

油罐清洗方法的比较及安全技术措施

根据清洗油罐的不同途径,将油罐清洗方法分成人工清洗和机械清洗两类。分别阐述了人工清洗和机械清洗中各油罐清洗方法的原理及适用条件,并将不同情况下应用的不同油罐清洗方法进行了比较。结合不同油罐清洗方法的技术特点,介绍了两种清洗方法需要注意的安全问题。     

燃气轮机在焦炉煤气发电中的应用

介绍了利用焦炉煤气发电的方法及燃气轮机发电的原理和机组结构,简述了焦炉煤气的前置处理系统和烟气脱硝系统。利用燃气轮机发电可综合利用焦炉煤气,是比较合适的发电方式。     

长输天然气管道燃机热耗率计算与校正方法研究

以天然气为燃料的燃机作为压缩机驱动源在长输天然气管道行业中普遍使用,特别是性价比较高的航改型燃机。燃机的效能作为天然气管道优化运行的重要指标之一受到普遍关注,掌握燃机组在实际运行中的性能对天然气管道运行人员,特别是运行方案制定人员至关重要。针对长输天然气管道的燃机效能最重要指标--热耗率的计算与校正的一整套方法进行阐述和研究,并与厂家提供的效能图和实际运行数据进行了比较,证明该方法能使燃机的主要效能参数误差控制在5%以内,满足了实际生产人员和优化仿真人员的工作需要。     

双层搅拌器组合的气液分散性能研究

系统研究和比较了径流桨和径流桨组合、径流桨和斜叶桨组合以及斜叶桨和斜叶桨组合3类不同的双层搅拌器组合,在气液分散搅拌过程中的优劣。小通气量时径流桨和斜叶桨组合(DT PTD和PTU DT)在相同的单位体积搅拌功率下气含率最高,而在大通气量时,双层上翻式斜桨组合(PTU PTU)气含率最高,并发现大通气量时,下层桨不宜采用下压式斜叶桨。     

烟气轮机叶片间隙中FCC催化剂细粉运动规律——叶片上的磨损与结垢

针对近年来炼厂中出现的烟气轮机叶片上结垢严重的问题,采用欧拉-拉格朗日的数值模拟方法对烟机内的气固二相流动,特别是对固体颗粒相的运动规律进行了探索研究。结果表明,不同粒径的催化剂颗粒在叶片表面的运动轨迹是不同的,所造成的后果也不相同,粒径较小(<3μm)的颗粒易在叶片压力面上发生沉积和结垢,粒径较大(20μm)的颗粒易引起叶片的冲蚀与磨损;且由数值模拟所预测的烟机磨损与结垢发生的位置与生产实际中的情况是相一致的,可为进一步揭示烟机动叶片上的结垢原因和优化炼厂中烟机本身的操作条件提供理论基础与实践指导。     

Torque and bending moment acting on a flexible shaft agitated by disk turbines in a gas–liquid stirred vessel

The torque and bending moment acting on a flexible overhung shaft in a gas–liquid stirred vessel agitated by a Rushton turbine and three different curved-blade disk turbines(half circular blades disk turbine, half elliptical blades disk turbine, and parabolic blades disk turbine) were experimentally measured by a customized moment sensor. The results show that the amplitude distribution of torque can be fitted by a symmetric bimodal distribution for disk turbines, and generally the distribution is more dispersive as the blade curvature or the gas flow rate increases. The amplitude distribution of shaft bending moment can be fitted by an asymmetric Weibull distribution for disk turbines. The relative shaft bending moment manifests a "rising-falling-rising" trend over the gas flow number, which is a corporate contribution of the unstable gas–liquid flow around the impeller, the gas cavities behind the blades, and the direct impact of gas on the impeller. And the "falling" stage is greater and lasts wider over the gas flow number for Rushton turbine than for the curved-blade disk turbines.     

轴承稳定性对悬臂式烟气轮机振动影响的研究

针对悬臂式烟气轮机的特点,从轴承稳定性的角度对悬臂式烟气轮机振动特性进行了分析,并具体应用于中原油田炼油化工总厂的烟气轮机中。对该机组启动过程的振动进行了深入的分析,找出了引起联锁停车的原因并提出了具体的解决措施。     

An adaptable steady state Aspen Hysys model for the methane fuelled solid oxide fuel cell

An adaptable model for the methane fed internal reforming SOFC using the in built features of Aspen Hysys is presented in this paper. The model includes the electrochemistry, the diffusion phenomena and the reforming kinetics in detail. Three potential methods for representing the SOFC are investigated out of which the recycled reforming model is found to be capable of providing reasonable results over a wide range of operating conditions. The electrochemical model that gives good agreement with experimental data is also identified. From the simulations, it is concluded that the developed model is reasonably accurate over a wide operating range and can be used for steady state analysis. The computational challenges in the modelling are discussed. The model will be used for system level optimisation studies of the SOFC system especially in conjuncture with gas turbines and steam turbines.     

Catalytic combustion for power generation

Catalytically stabilised combustion (CST) has the potential to become the best available low NO_x combustion technology with demonstrated NO_x emissions less than 3 ppm. Gas turbines incorporating CST may therefore eventually enjoy a significant market share; as such, the leading gas turbine manufacturers are actively working in this field. However, the demands made upon catalysts are challenging indeed. The present paper discusses practical issues concerning the application of catalytically stabilised combustion to gas turbines. It additionally reports on the ongoing investigation of methane/air CST (using palladium catalysts) at conditions relevant to gas turbines (inlet temperatures up to 500 °C, pressures up to 30 bar and spatial velocities up to 10⁶ h⁻¹).     

Optimization analysis of dual-purpose systems

This paper aims to analyze dual-purpose systems focusing the total cost optimization; a superstructure is proposed to present cogeneration systems and desalination technologies alternatives for the synthesis process. The superstructure consists of excluding components, gas turbines or conventional steam generators with excluding alternatives of supplying fuel for each combustion system. Also, backpressure or condensing/extraction steam turbine for supplying process steam could be selected. Finally one desalination unit chosen between electrically-driven or steam-driven reverse osmosis, multi-effect and multistage flash should be included. The analysis herein performed is based on energy and mass conservation equations, as well as the technological limiting equation of equipment. The results for ten different commercial gas turbines revealed that electrically-driven reverse osmosis was always chosen together with both natural gas and gasified biomass gas turbines.     

Advantages of the hollow (concave) turbine for multi-phase agitation under intense operating conditions

The mixing literature on hollow blade turbines (HBTS), for operation in fully turbulent flow, is reviewed and compared with the results of our own studies. The SCABA 6SRGT is shown to have an almost identical pumping rate to a disc turbine, when compared at the same diameter and specific power. An equation is proposed for the effect of scale and blade geometry on the power number of a range of concave hollow blade agitators. The “flooding-loading” condition is revisited. It is found that, when compared at conditions above the minimum Froude number required to disperse gas, the HBT designs are as energetically efficient as Rushton turbines for dispersing gas. If we compare them on an “ungassed” power basis, as is the usual literature case, then the HBT is more efficient because of their ability to disperse gas without significant loss of power. The much lower power number resulting from the streamlined blade design of the HBTs also ensures that they achieve the minimum Froude number required to disperse gas at a much lower power than a RT. A simple method to avoid “flooding” for radial turbines, based on this work, is proposed. Under fully loaded conditions the hollow blade turbines will handle high gas rates without significant loss of power and this ability is a function of the degree of streamlining. For the suspension of high levels of solids the D=T/2 hollow blade turbines, at a clearance of T/4, are found to be amongst the most efficient agitators especially under gassed conditions, where almost no effect of gassing on the just suspension speeds were noted.     

燃气轮机余热发电系统方案选择

综合利用不同型号燃气轮机余热的发电系统,根据水泥厂自备电站的不同型号燃气轮机余热情况,拟定余热发电技术方案,分析比较不同方案下余热发电系统的技术指标,从而选择合理的技术方案。