IGCC联合循环系统全工况特性分析研究

概述IGCC联合循环系统全工况特性的分析研究。基于全工况和独立变量概念，剖析系统工况变动的影响因素与构筑全工况图谱框架；分析采用不同调节方式时燃气侧循环和蒸汽侧循环变工况特性规律；在大量计算和分析基础上，绘制完整的IGCC联合循环系统全工况特性图谱，总结归纳系统特性规律和得到有参考价值的结论等。概述的研究成果为IGCC联合循环系统设计优化与运行控制提供完整的信息和有效手段。     

整体煤气化联合循环热力系统设计优化研究

本文概述作者研究集体对整体煤气化联合循环(IGCC)系统设计优化的研究：归纳IGCC系统主要热力特点，提出IGCC系统两层次和联合循环两大块交叉迭代的设计优化的新思路；应用模块化建模方法，建立系统设计优化模型；对IGCC系统进行了大量计算与模拟分析，绘制出完整的IGCC系统热力特性图，全面揭示IGCC的热力特性和独立变量的影响规律。实例研究表明，所提出IGCC系统设计优化的思路与方法是可行、实用的。     

Puertollano IGCC电站控制系统介绍

IGCC发电系统的自动控制技术与常规联合循环系统有明显的不同。本文主要对西班牙Puertollano IGCC电站的控制系统进行了介绍。希望对将来国内的IGCC示范电厂的建设有所裨益。     

IGCC联合循环系统模型通用性研究

本文研究总结了IGCC联合循环建模中增强模型通用性的途径与方法，提出从三个环节人手建立更通用的IGCC联合循环系统模型，即：建立通用性更强的单元模块全工况通用模型；借助于高通用性的模块间网络联接与管道方程模型；应用流程超结构和独立变量概念来增强系统建模的通用性。通过多个系统模拟分析实例的成功应用，验证了所建模型的通用性和各种增强模型通用性途径的有效性。     

燃气-蒸汽联合循环系统模型精细性研究

本文研究探讨燃气-蒸汽联合循环系统建模中增强模型精细性的问题，并总结了相关的途径与方法。首先，借助理论分析和试验数据拟合相结合的方法建立联合循环系统中主要部件全工况特性的通用精细模型；然后，寻找主要因素变化对性能影响的精细修正公式来进一步提高有关部件模型的精度；最后，应用严格的部件间联接方程来进行系统建模时的精细联接。大量实例应用研究验证了建立的联合循环系统模型中增强精细性措施的有效性。     

新型IGCC系统的开拓与集成技术

本文基于大量相关研究，全面总结分析了新型IGCC系统的开拓及其集成技术开发与进展。首先分析了IGCC固有的效率高、环保性能优以及最具发展潜力等特点，以揭示其具有的发展前景和受到重视的原因；然后总结介绍了正在发展的燃料电池一IGCC联合循环、IGCC多联产、C02零排放的IGCC以及燃料多样化的IGCC等新型系统，并扼要论述这些新系统整合机理和特性。还归纳介绍了先进的燃气轮机技术、离子膜制氧技术等集成技术开发与进展。     

CO2零排放的整体煤气化联合循环系统研究进展

概述了目前国内外CO2零排放的整体煤气化联合循环（IGCC）系统开拓研究的进展，归纳分析了IGCC系统中CO2分离和回收的五类途径：在系统排烟中分离和回归CO2。在燃烧前对燃料气进行处理与分离；IGCC与化工过程结合的多联产系统；燃料气定向转移的多种热力循环联合系统，借助热力循环创新。     

IGCC多联产系统设备特点及其运行技术研究

IGCC发电技术是基于清洁煤气化的高效联合循环发电技术,本文通过对目前国内外燃烧天然气和IGCC发电技术的综合研究,分析了IGCC发电技术的设备特点,并结合类似IGCC燃用中低热值的联合循环机组试验研究结果,开展了IGCC发电设备的经济运行技术研究,对IGCC及其多联产机组参与电网调峰运行和掺烧备用天然气的运行技术提出了建议。     

燃气-蒸汽联合循环系统设计与蒸汽系统参数分析研究

研究了蒸汽系统的参数选择对联合循环部件及总体性能的影响，通过对单压、双压和三压三种蒸汽系统参数配置方案的设计计算和分析。初步得到了联合循环热力系统合理设计的一些基本原则，研究结果对联合循环系统的总体优化设计具有一定的参考价值。     

联合循环采用的余热锅炉之特点与设计实例

本文概述了IGCC和PFBC联合循环中采用的余热锅炉之特点和要求,并综述了某些设计实例,以备人们设计这类余热锅炉时借鉴。     

通过联产甲醇提高整体煤气化联合循环系统的变负荷性能

整体煤气化联合循环(IGCC)是最有前景的清洁煤发电技术之一,但由于经济性和操作灵活性的不足,其发展受到了限制.将IGCC系统与甲醇合成系统耦合,通过联产甲醇可以提高系统的负荷调节能力,同时改善IGCC电站的经济性.以实际案例定量地分析了保持联产系统气化单元满负荷运行时,调节合成气在化工单元和电力单元的分配来调节电力负荷的能力.结果表明:通过设计合成单元设备容量盈余.可以实现保持气化炉运行工况不变而改变电力输出负荷;而联产甲醇增强了煤气化发电的操作灵活性.     

三压再热汽水系统IGCC的设计工况和变工况性能

以三压再热式汽水系统ＩＧＣＣ（整体煤气化燃气－蒸汽联合循环）为研究对象组成了整体空分ＩＧＣＣ系统方案,建立了气化炉,净化系统,燃气轮机,空分装置,余热锅炉,汽轮机各组成部件的数学模型,对ＩＧＣＣ系统的设计工况和变工况特性进行计算,分析了煤气轮机采用不同调节规律和汽轮机采用不同运行方式时对系统变工况性能的影响并提出了合理的运行方式。     

整体煤气化联合循环_IGCC_系统变工况特性

作者分析了影响IGCC系统变工况的因素,基于通用性模块化建模思想,建立了IGCC系统变工况特性模型和开发出相应程序软件,通过大量的计算,得出三种调节方式下系统随负荷与大气温度变化时的变工况特性曲线簇,揭示了系统特性随主要变量变化关系。     

Effects of supplementary biomass firing on the performance of combined cycle power generation: A comparison between NGCC and IGCC plants

In the present work, effects of biomass supplementary firing on the performance of fossil fuel fired combined cycles have been analyzed. Both natural gas fired combined cycle (NGCC) and integrated coal gasification combined cycle (IGCC) have been considered in the study. The efficiency of the NGCC plant monotonically reduces with the increase in supplementary firing, while for the IGCC plant the maximum plant efficiency occurs at an optimum degree of supplementary firing. This difference in the nature of variation of the efficiency of two plants under the influence of supplementary firing has been critically analyzed in the paper. The ratings of different plant equipments, fuel flow rates and the emission indices of CO₂ from the plants at varying degree of supplementary firing have been evaluated for a net power output of 200 MW. The fraction of total power generated by the bottoming cycle increases with the increase in supplementary firing. However, the decrease in the ratings of gas turbines is much more than the increase in that of the steam turbines due to the low work ratio of the topping cycle. The NGCC plants require less biomass compared to the IGCC under identical condition. A critical degree of supplementary firing has been identified for the slag free operation of the biomass combustor. The performance parameters, equipment ratings and fuel flow rates for no supplementary firing and for the critical degree of supplementary biomass firing have been compared for the NGCC and IGCC plants.     

双压再热蒸汽循环的IGCC变工况性能

介绍了IGCC蒸汽侧采用双压再热循环时再热回路的合理选定。叙述了IGCC的变工况模型和计算得到的变工况性能及其分析,指出调节压气机IGV时,能与一般联合循环一要改善IGCC的变工况性能。     

整体煤气化联合循环_IGCC_技术的发展和应用

针对整体煤气化联合循环（IGCC）系统商业化过程中所遇到的主要问题，作者阐述了目前世界上的解决这些问题，在降低成本和关键技术的发展方向所采取的主要手段及其进展，同时还分析了IGCC在我国可能应用的具体途径。     

Biomass integrated gasification combined cycle with reduced CO2 emissions: Performance analysis and life cycle assessment (LCA)

Performance analysis and life cycle assessment (LCA) of an integrated gasification combined cycle (IGCC) fed with biomass with upstream CO₂ chemical absorption has been carried out. The main working conditions have been determined by mean of partial exergetic analysis. A sensitivity analysis with respect to the CO₂ absorbing solution composition has also been carried out. The reachable efficiency ranges between 35% and 36%, depending on gas turbine technology level. In comparison with efficiency values previously found for an IGCC fed with coal with upstream CO₂ chemical absorption (38–39%), the configuration studied seems to be attractive because of the possibility of operating with a simplified scheme (without H₂S removal process) and at atmospheric pressure and for the possibility of using biomass in a more efficient way with respect to conventional combustion systems. Due to the lower efficiency, the specific CO₂ emission results higher (170 kg/MW h) with respect to the cycle fed with coal and CO₂ removal (130 kg/MW h). Moreover, the CO₂ balance has been determined with respect to the entire life cycle of the plant, including the construction, operation, dismantling and the biomass growing phases.     

Exergy analysis of two cryogenic air separation processes

Two process designs of a cryogenic ASU (air separation unit) have been evaluated using exergy analysis. The ASU is part of an IGCC (integrated gasification combined cycle); it is supplying oxygen and nitrogen to the gasifier and nitrogen to the gas turbine. The two process designs separate the same feed into products with the same specifications. They differ in the number of distillation columns that are used; either two or three. Addition of the third column reduced the exergy destruction in the distillation section with 31%. Overall, the three-column design destroyed 12% less exergy than the two-column design. The rational exergy efficiency is defined as the desired exergy change divided by the total exergy change; it is 38% for the three-column design and 35% for the two-column design. Almost half of the exergy destruction is located in compressor after-coolers. Using this heat of compression elsewhere in the IGCC can be an important way to increase the IGCC efficiency. It is proposed to use it for the pre-heating of ASU products or for the production of steam, which can be used as part of the steam turbine cycle.