基于三菱燃机机组满负荷状态下NO_(x)排放量的计算方法研究  

Study on Calculating Method of NO_(x) Emission FromMitsubishi Gas Turbine Unit Under Full Load

作　　者：黄思佳 徐有宁[2] 谢智远 范宏涛 HUANG Sijia;XU Youning;XIE Zhiyuan;FAN Hongtao(School of Energy and Power,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;Institute of Engineering Technology,Shenyang Institute of Engineering,Shenyang 110136,Liaoning Province;Tianjin Branch of CNOOC(China)Co.,LTD.,Tianjin 400457)

机构地区：[1]沈阳工程学院能源与动力学院,辽宁沈阳110136 [2]沈阳工程学院工程技术研究院,辽宁沈阳110136 [3]中海石油(中国)有限公司天津分公司,天津400457

出　　处：《沈阳工程学院学报（自然科学版）》2024年第3期32-38,共7页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：为了准确、快速地预测燃气轮机燃烧室稳定运行时污染物的排放情况,提出了一个采用数值模拟的计算方法预估NO_(x)排放的设计流程。首先,根据燃气轮机燃烧室的类型和控制部件确定相关设计参数;其次,采取拉丁超立方方法优化燃烧室进口压力P、燃烧室出口温度T、主空气质量流量q和当量比φ的取值,形成主要参数样本空间;再次,根据计算流体力学的数值模拟结果为燃烧室化学分区提供依据,并通过化学反应器网络方法计算污染物的排放值;最后,在影响污染物排放的参数中选择主要参数,拟合出多参数影响的NO_(x)预估公式并分析4个显著参数对NO_(x)排放的影响关系。结果表明:在满负荷状态时,燃烧室压力增大,NO_(x)排放量增多;燃烧室温度上升,NO_(x)排放量增多;当主空气质量流量变大时,NO_(x)排放量呈减小的趋势;当量比增加时,NO_(x)排放量减少;模拟情况和经典模型在所研究的范围内的相关关系一致,说明了预估公式的适用性。In order to accurately and quickly predict the emission of pollutants in the stable operation of gas turbine combustor,a design process for predicting NO_(x)emission using numerical simulation is proposed in this paper.Firstly,the design parameters are determined according to the type of gas turbine combustion chamber and control components.Secondly,the Latin hypercube method is used to optimize the values of inlet pressure P,outlet temperature T,main air mass flow q and equivalent ratioφto form the sample space of main parameters.Then,according to the numerical simulation results of computational fluid dynamics(CFD),a chemical reactor network model is generated to provide the basis for the chemical partition of the combustion chamber,and the pollutant emission value is calculated by chemical reactor network method(CRN)according to the above sample space.Finally,the main influencing parameters are selected from the many parameters that affect pollutant emission,the NO_(x)prediction formula with multi-parameter influence is fitted,and the influence relationship of four significant parameters on NO_(x)emission is analyzed.The results show that when the combustion chamber pressure increases at full load,NO_(x)emission increases.Combustion chamber temperature increases,NO_(x)emission increases;With the increase of main air mass flow rate,NO_(x)emission showed a decreasing trend.NO_(x)decreases with the increase of equivalent ratio.The correlation between the simulation and the classical model is consistent in the study range,which shows that this prediction method has universality and applicability.The parameter selection and NO_(x)emission calculation methods are efficient and reliable.The fitting formula has obvious universality and can provide reference for the combustion chamber operating conditions and gas turbine design.

关 键 词：燃气轮机燃烧室 NO_(x) 化学网络模型 

分 类 号：TK16[动力工程及工程热物理—热能工程]