什么叫IGCC

IGCC全名（Intergrated Gasification Combined Cycle）即整体煤气化联合循环发电，是一种新一代的先进的净洁煤燃烧发电技术。IGCC先通过煤气化炉将煤气化成中，低热值的合成粗煤气，然后经净化系统将其除尘，脱硫，除染而制成可供燃气轮机使用的精煤气，进人燃烧室产生高效燃气带动汽机做功，同时还利用燃气轮机排气经余热锅炉卢生不同参数蒸汽，以驱动蒸汽轮机发电。以及供热等。     

基于Matlab的IGCC燃气轮机子系统热力性能的优化分析

分析了IGCC中燃气轮机的特点和变工况规律,建立了IGCC燃气轮机子系统的优化模型,并分别以燃气轮机的出力和系统效率为目标,采用Matlab计算软件进行了优化计算.计算结果揭示了燃气轮机子系统的性能变化规律,表明空分系数和氮气回注系数是影响燃气轮机出力和IGCC系统效率的重要参数,也是优化工作的重点对象.优化结果表明:文中实例所确定的IGCC系统具有良好的热力性能.     

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。     

《燃气轮机技术》论坛2002年烟台IGCC学术研讨会征文通知

为促进新世纪中国 IGCC的深入发展 ,早日高质量地建成我国第一座 IGCC示范电站 ,南京燃气轮机研究所《燃气轮机技术》杂志编辑部决定于2 0 0 2年 7月召开 IGCC学术研讨会。会议将出版论文集。希望从事燃气轮机与 IGCC研究的广大科技人员踊跃投稿。现将征文内容公布如下 :1 ) IGCC的最新发展 ,包括气化各种燃料如煤、生物质、石油焦、沥青等的电 /热 /工艺蒸汽 /化工产品多联产的 IGCC。2 ) IGCC系统的优化设计。3)气化炉的选型以及调试运行维护的经验教训。4)气化炉内化学反应的过程工艺控制。5)高温气体净化系统的研究与设计。…     

《燃气轮机技术》2004年索引

序号目次第一作者页期·专题论述·1浅论联合循环热力性能的验收试验焦树建 112用多联产概念改善IGCC经济性的分析麻林巍 15 13低热值煤气燃气轮机联合循环发电在钢铁厂的应用刘文和 2 114广州天然气电厂燃气 蒸汽联合循环发电机组的选择及经济技术分析黄伙基 2 615超速预应力技术在透平机械中的应用郑捷简 3 0 16V94.2型燃气轮机及其调试田　丰 3 417积极推广煤气化联合循环 (IGCC)发电技术赖　坚 128整体煤气化联合循环热力系统设计优化研究林汝谋 3 29续论联合循环热力性能的验收试验焦树建 12 210世界燃气轮机市场厂商与产品性能崔…     

《燃气轮机技术》2003年索引

序号目　　　　次第一作者页期·专题论述·　　　　　　　1IGCC联合循环系统全工况特性分析研究林汝谋 112喷动流化床煤气化技术研究的发展钟文琪 913国产重油交直流静电处理线的开发应用姚挺生 15 14性能卓越的刷握密封田　波 2 115HAT循环仿真模型研究综述与展望杨文滨 2 5 16燃气轮机进气的蒸发冷却装置的经济效益论证许教运 2 917IGCC中蒸汽系统流程与参数综合优化研究林汝谋 128燃用天然气的 35 0MW级联合循环的效率优化和机组选型何语平 929“照付不议”供气合同期限的探讨朱军辉 15 210广东地区电站燃气轮机进气冷却潜力的初…     

《燃气轮机技术》2007年索引

目次序号·专题论述·第一作者期页1 IGCC某些工作系统的设计经验焦树建1 12风电与燃气轮机互补系统发电成本敏感性分析包能胜1 93大亚湾石化区燃气轮机热电联产供热可靠性分析朱军辉1 144一类广义不可逆普适热机循环的生态学性能张万里1 165 9FA燃气轮机作为电网“黑启动”电源点的探讨俞立凡1 236燃气电厂的运行优化和天然气调峰王会祥1 277 IGCC系统中空气气化炉与氧气气化炉的对比研究高健2 18联合循环热电冷三联供系统的热经济性分析刘岩2 69对9FA燃气轮机联合循环机组性能试验的思考姜焕农2 1010 IGCC环保特性的研究王俊有2 15…     

IGCC学术研讨会将于2002年7月在烟台召开

为促进新世纪中国IGCC的深入发展,早日高质量地建成我国第一座IGCC示范电站,由南京燃气轮机研究所《燃气轮机技术》杂志编辑部组织的IGCC学术研讨会将于2002年7月在烟台召开。 会议内容包括：IGCC的最新发展（包括气化各种燃料如煤、生物质、石油焦、沥青等的电、热、工艺蒸汽、化工产品多联产的IGCC）;IGCC系统的优化设计;气化炉的选型以及调试运行维护的经验教训;气化炉内化学反应的过程工艺控制;高温气体净化系统的研究与设计;大型空分系统的设计与选型,调试与验收;大型空分系统的内压流程与外压流程的分析与比较;I…     

基于燃气轮机变工况的IGCC系统特性研究

燃气轮机是IGCC系统中的关键部件,其性能变化直接影响到整个IGCC系统。本文利用Thermoflex软件建立200MW级IGCC系统模型,主要分析燃气轮机在40％～100％负荷下的IGCC系统变工况特性。通过燃气轮机初温及其压气机进口可转导叶IGV变化,分析了燃气轮机实现降负荷调节方式,并从系统角度出发,研究了基于燃气轮机变工况的IGCC系统主要性能参数的变化。本文的研究结果对未来IGCC电站的设计和运行具有一定的参考价值。     

SGT5-2000E(LC)IGCC燃气轮机结构介绍

简要介绍整体煤气化联合循环(IGCC)发电技术,并通过对燃用中低热值合成煤气的燃机会发生的一些特殊问题进行分析,重点介绍西门子用于整体煤气化联合循环(IGCC)的E级SGT5-2000E(LC)燃气轮机是如何通过本体结构设计上改进,使原燃烧天然气的燃气轮机可以高效地燃烧合成煤气.     

Ash-forming elements in four Scandinavian wood species. Part 1: Summer harvest

Woody biomass in Finland and Sweden comprises mainly four wood species: spruce, pine, birch and aspen. To study the ash, which may cause problems for the combustion device, one tree of each species were cut down and prepared for comparisons with fuel samples. Well-defined samples of wood, bark and foliage were analyzed on 11 ash-forming elements: Si, Al, Fe, Ca, Mg, Mn, Na, K, P, S and Cl. The ash content in the wood tissues (0.2–0.7%) was low compared to the ash content in the bark tissues (1.9–6.4%) and the foliage (2.4–7.7%). The woods’ content of ash-forming elements was consequently low; the highest contents were of Ca (410–1340 ppm) and K (200–1310), followed by Mg (70–290), Mn (15–240) and P (0–350). Present in the wood was also Si (50–190), S (50–200) and Cl (30–110). The bark tissues showed much higher element contents; Ca (4800–19,100 ppm) and K (1600–6400) were the dominating elements, followed by Mg (210–2400), P (210–1200), Mn (110–1100) and S (310–750), but the Cl contents (40–330) were only moderately higher in the bark than in the wood. The young foliage (shoots and deciduous leaves) had the highest K (7100–25,000 ppm), P (1600–5300) and S (1100–2600) contents of all tissues, while the shoots of spruce had the highest Cl contents (820–1360) and its needles the highest Si content (5000–11,300). This paper presented a new approach in fuel characterization: the method excludes the presence of impurities, and focus on different categories of plant tissues. This made it possible to discuss the contents of ash element in a wide spectrum of fuel-types, which are of large importance for the energy production in Finland and Sweden.     

NEXT GENERATION ENGINEERED MATERIALS FOR ULTRA SUPERCRITICAL STEAM TURBINES

正1 ABSTRACT To reduce the effect of global warming on our climate,the levels of CO2emissions should be reduced.One way to do this is to increase the efficiency of electricity production from fossil fuels.This will in turn reduce the amount of CO2emissions for a given power output.Using US practice for efficiency calculations,then a move from a typical US plant running at 37%efficiency to a 760℃/38.5 MPa(1 400/5 580 psi)plant running at 48%efficiency would reduce CO2emissions by 170kg/MW.hr or 25%.     

Contents in Volume 23,2014

<正>~~     

Aerodynamic performance effects of leading-edge geometry in gas-turbine blades

The purpose of this paper is to illustrate the advantages of the direct surface-curvature distribution blade-design method, originally proposed by Korakianitis, for the leading-edge design of turbine blades, and by extension for other types of airfoil shapes. The leading edge shape is critical in the blade design process, and it is quite difficult to completely control with inverse, semi-inverse or other direct-design methods. The blade-design method is briefly reviewed, and then the effort is concentrated on smoothly blending the leading edge shape (circle or ellipse, etc.) with the main part of the blade surface, in a manner that avoids leading-edge flow-disturbance and flow-separation regions. Specifically in the leading edge region we return to the second-order (parabolic) construction line coupled with a revised smoothing equation between the leading-edge shape and the main part of the blade. The Hodson–Dominy blade has been used as an example to show the ability of this blade-design method to remove leading-edge separation bubbles in gas turbine blades and other airfoil shapes that have very sharp changes in curvature near the leading edge. An additional gas turbine blade example has been used to illustrate the ability of this method to design leading edge shapes that avoid leading-edge separation bubbles at off-design conditions. This gas turbine blade example has inlet flow angle 0°, outlet flow angle −64.3°, and tangential lift coefficient 1.045, in a region of parameters where the leading edge shape is critical for the overall blade performance. Computed results at incidences of −10°,   −5°,   +5°,   +10° are used to illustrate the complete removal of leading edge flow-disturbance regions, thus minimizing the possibility of leading-edge separation bubbles, while concurrently minimizing the stagnation pressure drop from inlet to outlet. These results using two difficult example cases of leading edge geometries illustrate the superiority and utility of this blade-design method when compared with other direct or inverse blade-design methods.     

Hydrogen production by steam-gasification of carbonaceous materials using concentrated solar energy – V. Reactor modeling,optimization, and scale-up

A chemical reactor for the steam-gasification of carbonaceous particles (e.g. coal, coke) is considered for using concentrated solar radiation as the energy source of high-temperature process heat. A two-phase reactor model that couples radiative, convective, and conductive heat transfer to the chemical kinetics is applied to optimize the reactor geometrical configuration and operational parameters (feedstock's initial particle size, feeding rates, and solar power input) for maximum reaction extent and solar-to-chemical energy conversion efficiency of a 5 kW prototype reactor and its scale-up to 300 kW. For the 300 kW reactor, complete reaction extent is predicted for an initial feedstock particle size up to 35 μm at residence times of less than 10 s and peak temperatures of 1818 K, yielding high-quality syngas with a calorific content that has been solar-upgraded by 19% over that of the petcoke gasified.     

Assessment methods of material ageing using Sdobyrev''s creep rupture model

The physical aspects of the activation energy, in higher and high temperatures, of the metal creep process were examined. The research results of creep-rupture in a uniaxial stress state and the criterion of creep-rupture in biaxial stress states, at two temperatures, are then presented. For these studies creep-rupture, taking case iron as an example the energy and pseudoenergy activation was determined. For complex stress states the criterion of creep-rupture was taken to be Sdobyrev's, i.e. σ_red = σ₁ β + (1 − β)σ_i, where: σ₁-maximal principal stress, σ_i-stress intensity, β-material constant (at variable temperature β = β(T)). The methods of assessment of the material ageing grade are given in percentages of ageing of new material in the following mechanical properties: 1) creep strength in uniaxial stress state, 2) activation energy in uniaxial stress state, 3) criterion creep strength in complex stress states, 4) activation pseudoenergy in complex stress states. The methods 1) and 3) are the relatively simplest because they result from experimental investigations only at nominal temperature of the structure work, however, for methods 2) and 4) it is necessary to perform the experimental investigations at least at two temperatures.     

Production of hydrogen from sewage biosolids in a continuously fed bioreactor: Effect of hydraulic retention time and sparging

Hydrogen was produced from primary sewage biosolids via mesophilic anaerobic fermentation in a continuously fed bioreactor. Prior to fermentation the sewage biosolids were heated to 70 °C for 1 h to inactivate methanogens and during fermentation a cellulose degrading enzyme was added to improve substrate availability. Hydraulic retention times (HRT) of 18, 24, 36 and 48 h were evaluated for the duration of hydrogen production. Without sparging a hydraulic retention time of 24 h resulted in the longest period of hydrogen production (3 days), during which a hydrogen yield of 21.9 L H₂ kg⁻¹ VS added to the bioreactor was achieved. Methods of preventing the decline of hydrogen production during continuous fermentation were evaluated. Of the techniques evaluated using nitrogen gas to sparge the bioreactor contents proved to be more effective than flushing just the headspace of the bioreactor. Sparging at 0.06 L L min⁻¹ successfully prevented a decline in hydrogen production and resulted in a yield of 27.0  L H₂ kg⁻¹ VS added, over a period of greater than 12 days or 12 HRT. The use of sparging also delayed the build up of acetic acid in the bioreactor, suggesting that it serves to inhibit homoacetogenesis and thus maintain hydrogen production.     

汽轮机数字电液调节系统挂闸异常的技术完善

分析了200MW汽轮机数字电液调节系统在运行中存在的挂闸异常问题,采取了相应的技术处理措施,且运行实践效果良好。     

新型高压共轨ECU升压模块的数字化开发与优化

为了提高喷油器电磁阀的响应速率,提出了一种基于CPLD(复杂可编程逻辑器件)应用于高压共轨ECU的数字升压模块。鉴于该升压电路结构参数多,其升压电压的恢复响应要求高等特征,基于Pspice建立了升压电路的仿真模型,研究了不同电路参数下升压模块的输出特性,全面优化了该升压模块的性能。结果显示,该升压模块的最大转换效率可以达90%以上。在柴油发动机上对ECU的试验表明,升压电压最大波动不超过10%,其恢复时间仅为1.3ms,功率管最大温升仅为41℃,满足整机运行范围内ECU的需求。     

Trace metal chemistry and silicification of microorganisms in geothermal sinter, Taupo Volcanic Zone, New Zealand

As part of a pilot study investigating the role of microorganisms in the immobilisation of As, Sb, B, Tl and Hg, the inorganic geochemistry of seven different active sinter deposits and their contact fluids were characterised. A comprehensive series of sequential extractions for a suite of trace elements was carried out on siliceous sinter and a mixed silica-carbonate sinter. The extractions showed whether metals were loosely exchangeable or bound to carbonate, oxide, organic or crystalline fractions. Hyperthermophilic microbial communities associated with sinters deposited from high temperature (92–94°C) fluids at a variety of geothermal sources were investigated using SEM. The rapidity and style of silicification of the hyperthermophiles can be correlated with the dissolved silica content of the fluid. Although high concentrations of Hg and Tl were found associated with the organic fraction of the sinters, there was no evidence to suggest that any of the heavy metals were associated preferentially with the hyperthermophiles at the high temperature (92–94°C) ends of the terrestrial thermal spring ecosystems studied.