保证燃气-蒸汽联合循环余热锅炉性能的措施

从燃气-蒸汽联合循环余热锅炉的设计出发,根据影响余热锅炉性能的各种因素,简要分析说明了保证余热锅炉性能的一系列措施;余热锅炉的性能优劣直接影响到燃气-蒸汽联合循环机组的整体运行,是燃气-蒸汽联合循环机组高参数、大型化发展的重要因素。     

联合循环中的余热锅炉及其设计参数选择

介绍了燃气-蒸汽联合循环的基本原理、余热锅炉结构及其汽水系统,分别讨论了余热锅炉节点和接近点温差的选择、余热锅炉设计参数的选择以及余热锅炉变工况运行技术.文章可以为燃气-蒸汽联合循环中余热锅炉的设计、运行和改造提供依据.     

燃气-蒸汽联合循环余热锅炉方案简介

本文根据大型燃气-蒸汽联合循环余热锅炉的技术特点,简要介绍某电厂匹配GE 9FB型燃气轮机的余热锅炉方案,并分析说明了燃气-蒸汽联合循环余热锅炉快速启动的一系列措施。     

配9E燃机（100MW级）的燃气—蒸汽联合循环系统中余热锅炉参数的优化设计

燃气一蒸汽联合循环发电系统中余热锅炉的参数优化，是余热锅炉设计和研究的重要环节。本文通过具体实例，详细阐述了杭州锅炉集团有限公司首批开发的配9E燃机的联合循环系统中余热锅炉蒸汽循环系统优化、蒸汽参数优化和除氧热源优化的设计过程和结果。概述了该等级燃机余热锅炉的设计和结构特点。     

燃气-蒸汽联合循环热效率关于耦合参数的关系式

在考虑实际影响因素的前提下,推导出燃气轮机热效率关于耦合参数的关系式。以三压有再热余热锅炉的燃气-蒸汽联合循环为例,推导出非补式余热锅炉型蒸汽轮机热效率关于耦合参数的关系式,在此基础上得到了燃气-蒸汽联合循环热效率关于耦合参数的关系式。为研究燃气-蒸汽关于耦合参数的优化研究提供理论依据。     

联合循环余热锅炉蒸汽参数的优化分析

对双压再热余热锅炉的蒸汽参数进行了优化研究，计算归纳了最优化的蒸汽压力、蒸汽流量以及Yong回收量随余热锅炉进口燃气参数的变化规律。其结果对联合循环余热锅炉优化设计具有理论意义和价值。     

立式余热锅炉简介

本文主要就介绍燃气-蒸汽联合循环电厂余热锅炉的特点，阐述余热锅炉设计原则，并对两种余热锅炉作了比较，着重说明了立式余热锅炉的优点．     

联合循环发电技术及其余热锅炉

燃气-蒸汽联合循环发电技术可实现化学能梯级利用,具有很高的效率。余热锅炉处于燃气轮机和蒸汽轮机之间,对联合循环系统效率产生重要影响。本文概述了燃气-蒸汽联合循环发电技术的原理和组成,重点介绍了余热锅炉的结构和热力性能等方面的特点,并对影响余热锅炉性能的有关因素进行了阐述。最后,对余热锅炉的研究方向进行了讨论。     

双压再热余热锅炉蒸汽参数优化与分析

本文对联合循环系统双压再热余热锅炉的蒸汽参数进行了优化研究,计算并总结了最优化的蒸汽压力、蒸汽流量以及回收量随余热锅炉进口燃气参数的变化规律．其结果对联合循环余热锅炉的优化设计县有理论意义和实用价值．     

燃气-蒸汽联合循环蒸汽系统参数影响分析

以SGT5-4000F型燃气-蒸汽联合循环为研究对象,以系统热平衡方程为理论依据建立数学模型。推导了余热锅炉效率及排烟温度的解析式,并对联合循环蒸汽侧的主要参数对余热锅炉效率及排烟温度的影响进行了分析。结果表明:高压蒸汽的压力及温度升高会使余热锅炉效率降低,排烟温度也会随之升高。中压蒸汽压力的影响则与之相反。本研究的结果可以为燃气-蒸汽联合循环的设计提供理论参考。     

余热锅炉快速启动的影响因素及实现措施分析

根据余热锅炉的运行及研究现状,阐述余热锅炉快速启动的意义及余热锅炉的启动方式,分析余热锅炉快速启动的影响因素,对实现余热锅炉安全、快速启动的措施进行了论述。     

余热炉制造工艺研究

9F余热炉是目前国内最大等级的余热锅炉,我公司中标的“珠江”、“镇海”余热炉,交货周期紧,产品结构新。根据产品特点,我公司制造人员提出制造方案,顺利完成了9F余热炉的制造。     

浙江省联合循环发电厂中余热锅炉应用的进展

针对浙江省燃气-蒸汽联合循环发电厂燃机的余热锅炉经历了如下的进展：第一代为配36MW燃机的国产余热锅炉，第二代是配9E型燃机的进口余热锅炉，第三代是配9F型燃机的引进技术国产余热锅炉.文章对比了三代余热锅炉的性能参数，指出总的发展趋势是应用更大容量及更高效率的余热锅炉.     

A performance analysis of integrated solid oxide fuel cell and heat recovery steam generator for IGFC system

Solid oxide fuel cell (SOFC) is a promising technology for electricity generation. Sulfur-free syngas from a gas-cleaning unit serves as fuel for SOFC in integrated gasification fuel cell (IGFC) power plants. It converts the chemical energy of fuel gas directly into electric energy, thus high efficiencies can be achieved. The outputs from SOFC can be utilized by heat recovery steam generator (HRSG), which drives the steam turbine for electricity production. The SOFC stack model was developed using the process flow sheet simulator Aspen Plus, which is of the equilibrium type. Various ranges of syngas properties gathered from different literature were used for the simulation. The results indicate a trade-off efficiency and power with respect to a variety of SOFC inputs. The HRSG located after SOFC was included in the current simulation study with various operating parameters. This paper describes IGFC power plants, particularly the optimization of HRSG to improve the efficiency of the heat recovery from the SOFC exhaust gas and to maximize the power production in the steam cycle in the IGFC system. HRSG output from different pressure levels varies depending on the SOFC output. The steam turbine efficiency was calculated for measuring the total power plant output. The aim of this paper is to provide a simulation model for the optimal selection of the operative parameters of HRSG and SOFC for the IGFC system by comparing it with other models. The simulation model should be flexible enough for use in future development and capable of predicting system performance under various operating conditions.     

联合循环参数和系统结构优化研究

研究了如何提高余热锅炉型三压再热联合循环系统的效率,应用分析的方法建立了系统效率数学模型,以联合循环系统效率最高作为系统性能的评判标准。在亚临界范围内,对余热锅炉的蒸汽参数进行了优化;针对余热锅炉进气温度对余热锅炉性能的影响进行分析,在此基础上提出燃气轮机排气部分回热利用,并研究了回热利用对联合循环效率的影响。计算结果表明:经余热锅炉优化和排气部分回热利用,在基本负荷下,PG9351FA机组的联合循环热效率可提高1.33%;在75%和50%的负荷下,效率分别提高2.11%和4.17%;而具有再热的GT26机组热效率高达60.73%。     

调峰运行大型余热锅炉设计要点

联合循环机组容量的提高,促进余热锅炉的设计大型化.调峰运行要求对余热锅炉适应机组快速启、停和负荷变化要求提出了挑战.针对调峰余热锅炉常会发生的问题,重点阐述余热锅炉关键受压部件产生的疲劳机理,提出相应的设计措施;介绍上海锅炉厂有限公司余热锅炉设计采用的独特Harp型结构和强化的疏水等措施,能有效地防止余热锅炉的低周疲劳,适应大型联合循环调峰运行的要求.     

9F级联合循环余热锅炉受压部件设计特点

针对上海锅炉厂有限公司引进阿尔斯通技术设计制造的华能上海石洞口燃机电厂3×400 MW联合循环机组余热锅炉,从余热锅炉特有的热力特性角度着手,介绍了9F级HRSG受压部件的设计特点,提出HRSG锅炉的受热面模块、锅筒等主要受压部件的设计事项。对同类型的余热锅炉受压部件的设计有参考意义。     

Optimal thermodynamic and economic volume of a heat recovery steam generator by constructal design

The ratios of gas flow to steam flow are huge in heat recovery steam generators (HRSGs) compared to other steam generators. So the volume which is occupied by components of the HRSG such as economizer, evaporator and superheater is important factor when the HRSG is applied in structures including buildings and ships. The optimum volume of a HRSG is deduced through optimization of entropy generation and cost evaluation. By increasing volume, second law of thermodynamics is improved, but this improvement may not be economical. In this work, the best dimensions and arrangements of flows in HRSG are obtained by constructal design and the optimization method is algorithm genetic. In this case, super heater temperature, pinch point, water/steam flow rate and gas pressure drop are derived from configuration which designed by constructal theory for HRSG. The effects of gas flow rate and inlet gas temperature are examined on the values of optimum volume.     

Availability analysis of heat recovery steam generators used in thermal power plants

The combined-cycle gas and steam turbine power plant presents three main pieces of equipment: gas turbines, steam turbines and heat recovery steam generator (HRSG). In case of HRSG failure the steam cycle is shut down, reducing the power plant output. Considering that the technology for design, construction and operation of high capacity HRSGs is quite recent its availability should be carefully evaluated in order to foresee the performance of the power plant.This study presents a method for reliability and availability evaluation of HRSGs installed in combined-cycle power plant. The method’s first step consists in the elaboration of the steam generator functional tree and development of failure mode and effects analysis. The next step involves a reliability and availability analysis based on the time to failure and time to repair data recorded during the steam generator operation. The third step, aiming at availability improvement, recommends the fault-tree analysis development to identify components the failure (or combination of failures) of which can cause the HRSG shutdown. Those components maintenance policy can be improved through the use of reliability centered maintenance (RCM) concepts. The method is applied on the analysis of two HRSGs installed in a 500 MW combined-cycle power plant.     

BCHP系统中余热锅炉结构参数的热经济学优化

本文建立以BCHP系统的产品平均（yong）成本为目标函数,以余热锅炉排烟温度、蒸发器和省煤器中螺旋翅片管排数、每排管数、管束横向节距和纵向节距为决策变量的余热锅炉优化模型。应用所建立的优化计算模型,对BCHP系统不同工况分别进行优化计算,结果表明,无论在何种工况下,余热锅炉参数优化后其效率比优化前有所提高,冷量分摊的成本、系统的产品平均(yong)成本比未优化时均有所降低。