Emissions of NO and CO from counterflow combustion of CH4 under MILD and oxyfuel conditions

Emissions of NO and CO from counterflow combustion of CH4 under MILD and oxyfuel conditions
复制标题

MILD 和富氧燃料条件下 CH4 逆流燃烧的 NO 和 CO 排放

DOI:
10.1016/j.energy.2017.02.083
复制
发表时间:
2017-04
期刊:
影响因子:
9
通讯作者:
Mi Jianchun
Mi Jianchun
中科院分区:
工程技术1区
文献类型:
--
作者:
Cheong Kin-Pang;Li Pengfei;Wang Feifei;Mi Jianchun

文献摘要

参考文献

被引文献

相似文献

本文报告了在轻度或/和氧气条件下模拟的甲烷的反流燃烧的NO和CO排放特性。使用Chemkin进行模拟,以用于各种燃料和氧化剂的注入条件。请注意,以后采用的术语“ oxyfuel”,“轻度N2”和“轻度CO2”燃烧代表了常规的氧气燃烧和N2and CO2稀释的轻度燃烧。据观察,对于所有研究病例,即使将燃烧温度提高到2000 K至2000 K或在燃料流中添加更多的N2(最高20%)(以模拟氮含量(如生物量)或氧化剂流(以模拟氧化剂),即使在所有研究案例中,无轻度CO2Combustion的发射都是非常低的。在轻度CO2COMBUSTION下允许的较高温度表明,轻度燃烧技术的能源效率提高。此外,氧化剂中蒸汽的存在降低了所有情况下的NO和CO排放。相对重要性分析表明,N2O中间的机制用于在轻度CO2COMBUSTION中产生NO的NO,而迅速和热机制则分别为Mild-N2and-N2and-N2和氧化燃烧燃烧。此外,灵敏度分析确定了这些燃烧条件下无发射起重要作用的主要反应。
This paper reports on the NO and CO emission characteristics of counterflow combustion of methane simulated under MILD or/and oxyfuel conditions. Simulations using CHEMKIN are conducted for various injection conditions of fuel and oxidizer. Note that the terms “oxyfuel”, “MILD-N2” and “MILD-CO2” combustion adopted hereafter represent the conventional oxy-combustion and those MILD combustions diluted by N2and CO2, respectively. It is observed that the NO emission of MILD-CO2combustion is ultra-low for all cases of investigation, even when increasing the combustion temperature up to 2000 K or adding more N2(up to 20%) to either the fuel stream (to simulate nitrogen-containing fuels like biomass) or the oxidizer stream (to simulate the air-ingress). A higher temperature allowed under MILD-CO2combustion suggests the improvement of energy efficiency for the MILD combustion technology. Moreover, the presence of steam in the oxidant reduces both NO and CO emissions of combustion for all cases.The relative importance analysis reveals that the N2O-intermediate mechanism for producing NO prevails in MILD-CO2combustion while the prompt and thermal mechanisms predominate MILD-N2and oxyfuel combustion, respectively. In addition, the sensitivity analysis identifies those main reactions that play important roles for the NO emission under these combustion conditions.
DOI: 10.1016/j.proci.2010.05.047
发表时间: 2011
期刊: --
影响因子: --
作者:
P. Heil;D. Toporov;M. Förster;R. Kneer
通讯作者: P. Heil;D. Toporov;M. Förster;R. Kneer
DOI: 10.1016/j.energy.2016.01.016
发表时间: 2016-03
期刊: Energy
影响因子: 9
作者:
A. Mardani;A. Ghomshi
通讯作者: A. Mardani;A. Ghomshi
DOI: 10.1016/j.energy.2016.03.087
发表时间: 2016-07
期刊: Energy
影响因子: 9
作者:
Chi Zhang;Ge Hu;S. Liao;Q. Cheng;Chenxuan Xiang;C. Yuan
通讯作者: Chi Zhang;Ge Hu;S. Liao;Q. Cheng;Chenxuan Xiang;C. Yuan
DOI: 10.1021/ef700327a
发表时间: 2008
期刊: Energy & Fuels
影响因子: 5.3
作者:
Sameer V. Naik;N. Laurendeau
通讯作者: Sameer V. Naik;N. Laurendeau
DOI: 10.1021/ef3000938
发表时间: 2012-05
期刊: Energy & Fuels
影响因子: 5.3
作者:
Z. Mei;J. Mi;Feifei Wang;C. Zheng
通讯作者: Z. Mei;J. Mi;Feifei Wang;C. Zheng