论文部分内容阅读
为了推进化学回热循环燃气轮机应用于船舶推进系统,应用最小吉布斯自由能法建立柴油-蒸汽重整反应计算模型并基于此模型分析化学回热循环燃气轮机的热力性能。使用甲烷-蒸汽重整反应结果验证该方法的可行性,计算结果和实验对比主要产物产量最大误差为3.44%。使用该方法计算柴油-蒸汽重整反应,计算后燃料折合热值提高了38.9%;循环效率得到提升。根据柴油-蒸汽重整反应计算结果计算了燃机的燃烧室出口温度为1375.3K,较简单循环的1542.8K降低了167.5K,较低的燃烧温度可以降低NOx的生成量。经过验证,在所选定的计算状态,烟气余热能量足够产生系统所需的水蒸汽。
In order to promote the application of chemical recuperative gas turbine to ship propulsion system, the calculation model of diesel-steam reforming reaction is established by Gibbs free energy method and the thermodynamic performance of chemical recuperative gas turbine is analyzed based on this model. The feasibility of this method was verified by the methane-steam reforming reaction results. The maximum error of the calculated results and experimental comparison of the yield of the main products was 3.44%. Using this method to calculate the diesel-steam reforming reaction, the calculated heat value of the fuel increased by 38.9%, and the cycle efficiency was improved. According to the calculation results of diesel-steam reforming reaction, the outlet temperature of the combustion chamber of the combustion engine is calculated to be 1375.3K, which is reduced by 167.5K at 1542.8K compared with the simple cycle. The lower combustion temperature can reduce the formation of NOx. After verification, in the selected calculation state, the waste heat energy of the flue gas is enough to generate the water vapor required by the system.