Experimental study on oxy-fuel combustion of heavy oil

• Published in: International journal of hydrogen energy Vol. 42; no. 31; pp. 20306 - 20315
• Main Authors: Wang, Zhiqiang, Liu, Ming, Cheng, Xingxing, He, Yusheng, Hu, Yingjie, Ma, Chunyuan
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 03.08.2017
• Subjects: Combustion characteristics; Excess air coefficient; Heavy oil; Oxy-fuel combustion; Temperature; Excess air coefficient; Combustion characteristics; Temperature; Oxy-fuel combustion; Heavy oil
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2017.06.105

Oxy-fuel combustion of heavy oil can be applied to oil field steam injection boilers, allowing the utilization of both heavy oil and CO2 resources. The present study investigated the oxy-fuel combustion characteristics of heavy oil under different conditions, including the flame, temperature, and pollutant emission characteristics. The results showed that heavy oil combustion was stable at O2 concentrations of 29%, as the O2 concentration was increased, the flame began to brighten gradually, becoming shorter and thicker, while the temperature gradient became higher and the high temperature zone moved closer to the burner exit. The overall temperature and the combustion rates in O2/CO2 atmospheres were below those seen in O2/N2 atmospheres. The volume of NO emitted in the flue gas was almost unaffected by the change in O2 concentrations in atmospheres containing high concentrations of CO2, but it increased rapidly with increasing O2 concentration in O2/N2 atmospheres. •The combustion characteristics in 29% O2/71% CO2 was similar to that in air.•As O2 concentration increased, the flame became brighter, shorter and thicker.•The temperature and combustion rates in O2/N2 were higher than in O2/CO2.•The NO emission was nearly unaffected by changing O2 concentration.