Simulation study on acetylene production from partial oxidation of natural gas with air based on computational fluid dynamics

HE Li; YANG Peiyuan; GAN Lihua

doi:10.12434/j.issn.2097-2547.20250019

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Simulation study on acetylene production from partial oxidation of natural gas with air based on computational fluid dynamics

更新时间：2025-10-22

- Simulation study on acetylene production from partial oxidation of natural gas with air based on computational fluid dynamics
- Vol. 50, Issue 10, Pages: 126-137(2025)
- 作者机构：
  
  西南大学化学化工学院，重庆 400715
- 作者简介：
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20250019
  CLC： TQ031.7
- Received：15 January 2025，
  
  Revised：2025-02-28，
  
  Published：25 October 2025
- 稿件说明：
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何李,杨培渊,甘利华.基于计算流体力学的天然气空气部分氧化制乙炔模拟研究[J].低碳化学与化工,2025,50(10):126-137.

HE Li,YANG Peiyuan,GAN Lihua.Simulation study on acetylene production from partial oxidation of natural gas with air based on computational fluid dynamics[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(10):126-137.
何李,杨培渊,甘利华.基于计算流体力学的天然气空气部分氧化制乙炔模拟研究[J].低碳化学与化工,2025,50(10):126-137. DOI： 10.12434/j.issn.2097-2547.20250019.

HE Li,YANG Peiyuan,GAN Lihua.Simulation study on acetylene production from partial oxidation of natural gas with air based on computational fluid dynamics[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(10):126-137. DOI： 10.12434/j.issn.2097-2547.20250019.

摘要

天然气非催化部分氧化法已广泛实现工业化，如何进一步降低成本仍是该技术面临的挑战。基于计算流体力学并结合GRI-Mech 3.0化学反应机理，对天然气空气部分氧化制乙炔进行了数值模拟，探讨了其在化学反应及工艺方面的可行性。结果表明，氮气不参与反应；在预热温度为923 K、氧烃比（

(CH

)）为0.70和进料流速为200~300 m/s条件下，反应器出口乙炔的物质的量分数可达8.9%，高于工业生产过程（7.8%）；生成合成气的氢碳比（

(CO)）为1.8，略低于以纯氧为氧化剂时的氢碳比。尽管天然气空气部分氧化在产品分离阶段工艺更为复杂，但由于无需高能耗的空分设备及其相关单元操作，仍展现出良好的应用前景。

Abstract

The non-catalytic partial oxidation of natural gas has been widely industrialized

but further cost reduction remains a key challenge for the technology. Based on computational fluid dynamics and the GRI-Mech 3.0 chemical reaction mechanism

numerical simulations of acetylene production via partial oxidation of natural gas with air were conducted

and its feasibility in terms of chemical reactions and process design was investigated. The results indicate that nitrogen does not participate in the reaction. Under conditions of the preheating temperature of 923 K

oxygen-to-carbon ratio (

(CH

)) of 0.70 and feed velocity of 200 m/s to 300 m/s

the mole fraction of acetylene at the reactor outlet can reach 8.9%

which is higher than the 7.8% observed in industrial production. The hydrogen-to-carbon monoxide ratio (

(CO)) of the generated syngas is 1.8

slightly lower than that obtained using pure oxygen as the oxidant. Although the product separation process is more complex when air is used as the oxidant

it still shows good application prospects due to the elimination of air separation units and associated high-energy-consuming operations.

关键词

Keywords

references

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