| 摘要: |
| 为保证多点喷射贫预混燃烧室在50%~100%载荷工况范围的NOx和CO排放量满足排放标准，本文实验研究了燃料分级数及不同工况、进口压力、进口温度下燃料分级比例对七喷嘴燃烧室NOx和CO排放的影响规律。结果表明：主模燃料不分级方案，50%~60%载荷工况CO排放量较高而不满足排放标准；主模燃料分两级方案，50%~100%载荷工况范围内NOx和CO排放量均满足fNOx≤25×10-6，fCO≤50×10-6（@ 15% O2）的排放标准，且70%工况是打开主模第二级燃料的过渡工况点。另外随着进口压力和温度升高，能同时满足NOx和CO排放标准的Rpilot（副模燃料质量流量与总燃料质量流量之比）范围逐渐缩小，且NOx排放量与进口压力关系为fNOx∝p30.44。因此采用主模燃料两级分级方案且适当调节Rpilot，本文多点喷射贫预混燃烧室NOx和CO能满足目前航改地面燃机燃烧室排放要求。 |
| 关键词: 航改燃机 多点喷射 贫预混燃烧 低污染 燃料分级 |
| DOI：10.13675/j.cnki.tjjs.2208023 |
| 分类号:V231.2 |
| 基金项目:国家科技重大专项（2017-Ⅲ-0006-0031；2017-Ⅲ-0002-0026）。 |
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| Experimental study on fuel-staging in a lean premixed combustor with multi-points injection for aeroderivative gas turbine |
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SUN Fujun1,2, PAN Jianghua1, GUO Luhua1, LI Jie3, MA Hongyu3, SUO Jianqin1
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1.School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China;2.AECC Hunan Aviation Powerplant Research Institute，Zhuzhou 412002，China;3.AECC Shenyang Engine Research Institute，Shenyang 110015，China
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| Abstract: |
| To ensure that the NOx and CO emissions of the multi-points injection lean premixed combustor in the range of 50%~100% loads all meet the emission demands， the effects of fuel-staging number， fuel-staging ratios under different loads， inlet pressure and inlet temperature on NOx and CO emissions for seven-injectors combustor were studied experimentally. The experimental results indicate that when adopting no fuel-staging scheme for main fuel， the CO emissions under 50%~60% loads are both high and do not meet the standard. With the double fuel-staging scheme for main fuel ， the emissions of NOx and CO within the range of 50%~100% loads all meet the demands of fNOx≤25×10-6，fCO≤50×10-6 （@15% O2）， and 70% load is the transition load point for opening the second-stage main fuel. As the inlet pressure and temperature increasing， the range of Rpilot （Rpilot is the ratio of pilot fuel mass flow to total fuel mass flow）， at which the NOx and CO could both satisfy the emissions demands， gradually decreased. In addition， the fNOx relation with p3 is shown as fNOx∝p30.44. Therefore， with the double fuel-staging scheme for main fuel and appropriate adjustment of Rpilot， the NOx and CO emissions of the multi-points injection lean premixed combustor in this paper can meet demands for aeroderivative and land-based gas turbine combustor at present. |
| Key words: Aeroderivative gas turbine Multi-point injection Lean premixed combustion Low emission Fuel-staging |
