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首页> 外文会议>Tenth International Conference on Modelling, Monitoring and Management of Air Pollution Jul, 2002 City of Segovia >Improving the environmental characteristics of gas turbine plants by the use of structural ceramic materials
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Improving the environmental characteristics of gas turbine plants by the use of structural ceramic materials

机译：通过使用结构陶瓷材料改善燃气轮机工厂的环境特性

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Gas-turbine engines (GTE) are widely applied to various branches of industry. The exhaust gases from GTEs contain a number of the components such as CO_2, nitrogen oxides NO_x, unburnt hydrocarbons C_nH_m, carbon monoxide CO, all these imposing a detrimental environmental effect. A reduction of the emissions of the above exhaust components could be reached only by cutting the fuel consumption in GTEs with maintaining their power at the same time, the latter could be achieved by increasing the working media's initial temperature at the turbine inlet and reducing the air consumption on cooling the hot path elements. Application of the structural ceramics (SCMs) not requiring a cooling within the temperatures up to T_g=1400-1500℃ to all the elements of the high temperature path of GTE looks to be the most attractive concept of putting a reliable solution of the above-stated goals into effect. At such temperatures, the specific fuel consumption would be not in excess of 160-165 g/KW which is much less compared to the value of the specific fuel consumption in the existing engines (250-300 g/KW), particularly for GTE of 5 to 100 KW power (350-450 g/KW). It is obvious that proportionally to the specific fuel consumption reduction the gross exhausts of the toxic substances into atmosphere will be also diminished (i.e. by 1.5-1.5 times).At the same time, application of SCMs will improve as well the operating characteristics of engines (maneuvrability, maintainability, corrosion and erosion resistance, etc). It will allow a substantial reduction of their mass-size characteristics, use of alloyed steels and alloys which are short of supply. In perspective, the cost will also be notably cut.
机译：燃气涡轮发动机（GTE）广泛应用于各个行业。来自GTE的废气包含许多成分，例如CO_2，氮氧化物NO_x，未燃烧的碳氢化合物C_nH_m，一氧化碳CO，所有这些都带来有害的环境影响。只有通过减少GTE的燃料消耗并同时保持其功率，才能实现上述排气成分的排放量的减少，而后者可以通过提高涡轮机入口处工作介质的初始温度并减少空气来实现。冷却热路径元素的消耗。将不需要在最高T_g = 1400-1500℃的温度范围内冷却的结构陶瓷（SCM）应用于GTE高温路径的所有元素，似乎是为上述问题提供可靠解决方案的最诱人的概念-规定的目标生效。在这样的温度下，比油耗不会超过160-165 g / KW，这与现有发动机的比油耗值（250-300 g / KW）相比要少得多，特别是对于GTE 5至100 KW功率（350-450 g / KW）。显然，与燃料消耗量的减少成正比，有毒物质向大气中的总排放量也将减少（即减少1.5-1.5倍）。同时，SCM的应用还将改善发动机的运行特性（可操作性，可维护性，耐腐蚀和侵蚀性等）。它将大大减少它们的质量尺寸特性，使用合金钢和短缺的合金。从角度来看，成本也将大大降低。

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