Three-dimensional spray combustion simulation in a practical boiler

Hideyuki Aoki, Shoji Tanno, Takatoshi Miura, Satoshi Ohnishi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


A three-dimensional computer model of a swirling fired-type furnace in which pulverized petroleum coke and ASTM No. 6 heavy oil are fed from two opposite side walls is presented. The predicted results are compared with measurements of exhaust NO concentration in an operating 125 MW (e) boiler with and without air introduced tangentially from the bottom of the furnace (below the lower burners) to convert H2S to SO2 effectively. Agreement between predicted and experimental data is quite satisfactory. Both show that the unburned ratio decreases with an increase in the fraction of the flow of tangential air to that of secondary air and with an increase of NO concentration. Our prediction also shows that when the tangential air is introduced from the bottom, a reduction in the H2S formation rate is successfully effected in low-grade high-sulfur-content fuels such as heavy oil and petroleum coke.

Original languageEnglish
Pages (from-to)428-434
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number3
Publication statusPublished - 1992


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