热力发电2023，Vol.52Issue(12)：70-78,9.DOI:10.19666/j.rlfd.202303033
SGT-800重型燃气轮机天然气掺氢燃烧数值模拟研究
Numerical modeling of natural gas combustion with hydrogen blending in SGT-800 heavy-duty gas turbine
李立新 1刘星雨 1曾过房 1白红涛 1于红伟 1李靖2
作者信息
- 1. 国家电投集团湖北分公司,湖北 武汉 430061
- 2. 华中科技大学电气与电子工程学院,湖北 武汉 430074
- 折叠
摘要
Abstract
In order to understand the performance changes and potential risks of hydrogen assisted combustion in combustion chamber of a lean-combustion premixed gas turbine,a numerical simulation study of the hydrogen injection combustion process of natural gas was carried out in the combustion chamber of Siemens SGT-800 gas turbine.The fuel ignition,temperature distribution,flame formation and NOx emission characteristics of the combustion chamber under five working conditions of 0,5%,10%,15%and 30%were investigated.Studies have shown that hydrogen-doped combustion in the current combustion chamber will lead to an earlier ignition position of the fuel,an increase in temperature peaks,a shorter axial length of the flame,and a gradual convergence of the outer duty flame towards the central mixer.The temperature distribution and flame morphology in the combustion chamber will not change significantly when the hydrogen-doped ratio is below 15%,but the ignition position in the mixer tube is seriously retracted at 30%hydrogen-doped ratio,and the flame on the outside is close to the nozzle outlet,which has a risk of tempering.In addition,the NOx emission value of the combustion chamber outlet increases with the hydrogen doping ratio,and the NOx emission value exceeds the standard by nearly 1/3 at 30%hydrogen doping ratio,indicating that high NOx emission is also one of the factors restricting the high proportion of hydrogen doping in gas turbines.关键词
燃气轮机掺氢/燃烧特性/火焰形态/NOx排放Key words
hydrogen mixing of gas turbine/combustion characteristics/flame formation/NOx emission引用本文复制引用
李立新,刘星雨,曾过房,白红涛,于红伟,李靖..SGT-800重型燃气轮机天然气掺氢燃烧数值模拟研究[J].热力发电,2023,52(12):70-78,9.
