Modelling and predication of a practical boiler

H. Aoki, S. Tanno, T. Miura, S. Ohnishi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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

Original languageEnglish
Title of host publicationASME/JSME Thermal Engineering Joint Conference
PublisherPubl by ASME
Number of pages8
ISBN (Print)0791806162
Publication statusPublished - 1991 Dec 1
EventProceedings of the 3rd ASME/JSME Thermal Engineering Joint Conference Part 5 (of 5) - Reno, NV, USA
Duration: 1991 Mar 171991 Mar 22

Publication series

NameASME/JSME Thermal Engineering Joint Conference


OtherProceedings of the 3rd ASME/JSME Thermal Engineering Joint Conference Part 5 (of 5)
CityReno, NV, USA

ASJC Scopus subject areas

  • Engineering(all)


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