Work

Study on the generation law of products and economy of oxygen-deficient combustion

Year: 2026

Type: article

Abstract: In response to the optimization requirements of low nitrogen combustion in gas heating furnaces, this study proposes a collaborative control method based on under oxygen combustion, which controls the excess air coefficient α (0.92~1.08) to balance fuel utilization and pollutant treatment costs. By combining numerical simulation with experimental verification, the system analyzes the generation law and economic characteristics of combustion products under hypoxic conditions. Research has shown that a decrease in α leads to incomplete combustion of fuel, which reduces furnace thermal efficiency but significantly alters the pathway of pollutant generation. When α<0.94, the concentration of soot and CO increases significantly, creating a strong reducing atmosphere and inhibiting NOx generation; By quantifying the game relationship between fuel cost increment and NOx end treatment cost， it was found that when α=0.94~0.96, NOx emissions are relatively low, meeting environmental requirements. Moreover, due to the chain like inhibitory effect of reducing substances on NOx, the consumption of denitrification agents can be reduced. The innovation of this study lies in revealing the inherent logic of "replacing treatment costs with fuel loss" in oxygen deficient combustion, providing theoretical support for industrial furnaces to choose a composite strategy of "moderate oxygen deficiency+end reduction" under environmental constraints.

Source: Case Studies in Thermal Engineering

DOI: 10.1016/j.csite.2026.107664

Authors: Hongtao Li, Jiajia Song, Han Li, Qingsong Song, Yunguang Ji, Yonggang Sheng

Institution: Hebei University of Science and Technology

Language: English

Topic: Industrial Gas Emission Control

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action

Open Access status: gold

Estimated APC paid: $1,620