Effect of combustion-supporting air on NO<italic style="font-style: italic"><sub>x</sub></italic> emission of ethylene cracking furnace

HU Guihua; YE Zhencheng; DU Wenli

doi:10.11949/0438-1157.20190771

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Effect of combustion-supporting air on NO_x emission of ethylene cracking furnace

Process system engineering | 更新时间：2026-07-24

- Effect of combustion-supporting air on NO_x emission of ethylene cracking furnace
- CIESC Journal Vol. 71, Issue 2, Pages: 698-707(2020)
- 作者机构：
  
  1. 华东理工大学信息学科与工程学院，上海 200237
  2. 化学工程联合国家重点实验室(华东理工大学)，上海 200237
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20190771
  CLC： TQ 021.1;TE 963
- Received：05 July 2019，
  
  Revised：2019-09-23，
  
  Online First：14 August 2020，
  
  Published：05 February 2020
- 稿件说明：
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胡贵华, 叶贞成, 杜文莉. 助燃空气对乙烯裂解炉NO, _x, 排放的影响[J]. 化工学报, 2020, 71(2): 698-707 DOI: 10.11949/0438-1157.20190771.

HU Guihua, YE Zhencheng, DU Wenli. Effect of combustion-supporting air on NO, _x, emission of ethylene cracking furnace[J]. CIESC Journal, 2020, 71(2): 698-707 DOI: 10.11949/0438-1157.20190771.
胡贵华, 叶贞成, 杜文莉. 助燃空气对乙烯裂解炉NO, _x, 排放的影响[J]. 化工学报, 2020, 71(2): 698-707 DOI: 10.11949/0438-1157.20190771. DOI：

HU Guihua, YE Zhencheng, DU Wenli. Effect of combustion-supporting air on NO, _x, emission of ethylene cracking furnace[J]. CIESC Journal, 2020, 71(2): 698-707 DOI: 10.11949/0438-1157.20190771. DOI：

摘要

乙烯裂解炉内复杂物理化学过程耦合模拟与优化能够满足乙烯装置对高效率、低污染和低成本的设计和操作要求，对提高乙烯工业的竞争力具有重要意义。针对简单燃烧机理难以准确预测炉膛燃烧生成NO

浓度分布的弊端，提出了在裂解炉使用更准确的简化GRI-Mesh 3.0机理结合涡耗散概念(EDC)模型的方法，并对Sand

ia Flame D的燃烧过程进行计算流体力学(CFD)模拟，验证了此耦合模型的可靠性。在已建立的燃烧模型的基础上，研究了助燃空气对降低裂解炉NO排放的影响，结果表明：在满足裂解炉热效率的情况下，空气预热温度为300~600 K、过量空气系数为1.1时降低NO的效果最佳。

Abstract

Coupled simulation and optimization of complex physical and chemical processes in ethylene cracking furnace can meet the demand for design and operation of high efficiency

low pollution and low cost in ethylene plant. Therefore

it has great significance for improving the competitiveness of the ethylene industry. Aiming at the disadvantage of simple combustion mechanism that it is difficult to accurately predict the distribution of NO

concentration produced by furnace combustion

are reduced GRI-Mesh 3.0 mechanism combined with eddy dissipation concept (EDC) model for cracking furnace was proposed. The combustion process of Sandia Flame D was simulated and the reliability of the coupled model was verified. Based on the established combustion model

the effect of combustion-supporting air on reducing NO emission of cracking furnace was studied. The results show that the best effect of reducing NO is when the air preheating temperature is 300—600 K and the excess air coefficient is 1.1 when the thermal efficiency of the cracking furnace is satisfied.

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⁰

Effect of combustion-supporting air on NOx emission of ethylene cracking furnace

DOI：10.11949/0438-1157.20190771

摘要

Abstract

关键词

Keywords

references

Effect of combustion-supporting air on NO_x emission of ethylene cracking furnace