Realization and comparison of flameless combustion of CH4 and C3H8 under un-preheating condition

ZHANG Yazhu; HUANG Zhuben; HUANG Jun; ZHANG Li; LI Kai

doi:10.19666/j.rlfd.202202016

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Realization and comparison of flameless combustion of CH₄ and C₃H₈ under un-preheating condition

更新时间：2025-09-28

- Realization and comparison of flameless combustion of CH₄ and C₃H₈ under un-preheating condition
- Thermal Power Generation Vol. 51, Issue 6, Pages: 89-95(2022)
- 作者机构：
  
  1. 内蒙古科技大学能源与环境学院
  2. 上海理工大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202202016
  CLC： TK16;X383;TQ038
- Published：2022
- 稿件说明：
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ZHANG Yazhu, HUANG Zhuben, HUANG Jun, et al. Realization and comparison of flameless combustion of CH₄ and C₃H₈ under un-preheating condition[J]. Thermal power generation, 2022, 51(6): 89-95.
DOI：

ZHANG Yazhu, HUANG Zhuben, HUANG Jun, et al. Realization and comparison of flameless combustion of CH₄ and C₃H₈ under un-preheating condition[J]. Thermal power generation, 2022, 51(6): 89-95. DOI： 10.19666/j.rlfd.202202016.

摘要

无焰燃烧是一种低污染物排放的清洁燃烧技术，为研究非预热条件下不同燃料实现无焰燃烧的过程，采用实验与数值模拟相结合的方法，研究甲烷与丙烷非预热条件下无焰燃烧的实现条件，并在此基础上对比了2种燃料达到无焰燃烧时温度场与污染物变化。结果表明：2种燃料均可以在非预热条件下实现无焰燃烧，燃料为甲烷时炉膛内的工作温度需大于1 123 K，燃料为丙烷时炉膛内的工作温度需大于923 K。当燃烧状态转变为无焰燃烧后，炉膛内温度分布均匀，甲烷无焰燃烧平均温度为1 148 K，丙烷无焰燃烧平均温度为1 243 K。甲烷与丙烷尾部烟气中CO与NO_x排放量均低于20 mg/m~3。对比实验结果与模拟结果发现，采用详细化学反应机理GRI-Mesh 3.0可以较好地模拟非预热条件下无焰燃烧。

Abstract

Flameless combustion is a clean combustion technology with low pollutant emissions.In order to explore the process of flameless combustion of different fuels under un-preheating conditions

by combining experimental method with numerical method

research on the realization conditions of flameless combustion of CH_4 and C_3H_8 without preheating is carried out.On this basis

the temperature field and pollutants changes of the two fuels when they reach flameless combustion are compared.The results show that

both fuels can achieve flameless combustion without preheating

when the fuel is CH_4

the working temperature in the furnace must be higher than 1 123 K

and when the fuel is C_3H_8

the working temperature in the furnace should be higher than 923 K.When the combustion state changes to a flameless combustion state

the temperature distribution in the furnace is even

and the average temperature of flameless combustion of CH_4 is 1 148 K

and that of C_3H_8 is 1 243 K.The CO and NO_x emission mass concentrations in the tail flue gas of CH_4 and C_3H_8 are both lower than 20 mg/m~3.Comparing the experimental results with the simulation results

it finds that the detailed chemical reaction mechanism numerical method-GRI-Mesh 3.0 can better simulate flameless combustion under non-preheating conditions.

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