||Technology in Australia 1788-1988
Table of Contents
I The Present Energy Economy
II Australian Energy Consumption
III Research And Development
V Oil And Natural Gas
VI Solar Energy
VII Nuclear Energy
VIII Bagasse Firewood And Other Biomass
IX Electric Power Generation And Distribution electric Power Generation And Distribution
X Manufactured Gas
XI Industrial Process Heat
i The sugar industry
ii General purpose boilers
iii Units used in this chapter
Although the introduction of bagasse suspension fired boilers provided a major step forward, their combustion is unsteady and at times this causes pressure surges which can cause damage. Australian researchers studied the fundamentals of bagasse burning (Lamb and Bilger, 1975), and combustion behaviour in operating furnaces (Dixon, 1984); SRI developed, a compact high-temperature drier design for bagasse and a prototype swirl burner which give stable attached flames over a wide range of bagasse moisture content. This dryer-burner system has been tested satisfactorily using commercial sawdust (Dixon, 1987). Such burners are envisaged as being particularly suitable for application in a modular boiler concept and would also be suitable for installation in existing old grate fired boilers or suspension fired boilers.
Technologists in the Australian sugar industry have created designs to improve the performance by giving special attention to tubes: their diameters, spacing, length, method of fixing, and materials. SRI has introduced new circulation paths in vessels by placing a number of larger diameter tubes in selected locations in the calandria.
Computer programmes developed by SRI are used by sugar mills in the design and re-arrangement of vessels in the evaporator sets. Australian researchers and mill technologists have also introduced a variety of methods of chemical treatment to minimise scaling and to chemically clean the vessels periodically, to maximise heat transfer through the tubes.
Part of the sugar-boiling research programme at SRI over a 20-year period was directed into continuous pan boiling. The successful result is a design which has given outstanding performance in Australia and which has been built overseas under licence (Broadfoot and Wright, 1981). Mill technologists have also completed a satisfactory installation with unique features.
People in Bright Sparcs - Anderson, C. N.; Bilger, R. W.; Broadfoot, R.; Dixon, T. F.; Lamb, B. W.; Levy, P. W.; Stalker, R. J.; Wright, P. G.
© 1988 Print Edition pages 842 - 844, Online Edition 2000
Published by Australian Science and Technology Heritage Centre, using the Web Academic Resource Publisher