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close this bookDesign of a Suspension Burner System for Forestry and Agricultural Residues (NRI)
View the document(introduction...)
View the documentAcknowledgements
View the documentNote
close this folderSummaries
View the documentSummary
View the documentRésumé
View the documentResumen
View the documentIntroduction
close this folderDescription of the unit
View the documentGeneral
View the documentFeeder unit
View the documentFurnace
View the documentHeat exchanger and cyclone
View the documentPrinciple of operation
View the documentExperimental programme
close this folderMonitoring and analysis of data
View the documentMonitoring
View the documentAnalysis of data
close this folderResults of experimental work
View the documentIntroduction
View the documentFeeder trials
View the documentLighting and starting procedures
View the documentResults of combustion trials
View the documentCoir dust dewatering trials
close this folderDiscussion of results
View the documentFeeders
View the documentCombustion trials
View the documentDewatering of coir dust
View the documentDual-chamber brick-built fornace
close this folderSuspension burner/timber drying system
View the documentDesign
View the documentDevelopment trials in Belize
View the documentEconomic appraisal
View the documentDiscussion
View the documentConclusions
View the documentReferences
close this folderAppendices
View the documentAppendix 1: Lighting and starting procedure
View the documentAppendix 2: Coir dust dewatering trials
View the documentAppendix 3: Results of the timber drying trials

Appendix 1: Lighting and starting procedure

Sawdust at 12% moisture content was loaded into the turntable feeder drum. With the fan and turntable feeder switched off, a small fire was built on the furnace floor. To promote a strong fire, the fan was then switched on to supply a low volume of air. When the fire was well alight the furnace door was closed and the fan speed increased to an air-flow rate of approximately 8 m3/ min. This caused the flue gas temperature to rise quickly to about 600°C, then, as the fire subsided, the temperature started to drop. At this point the turntable was switched on at a preset feedrate of about 25 kg/in. Steady operating conditions were reached after about 10 minutes.

For all the experimental trials the unit was first run for 2-3 hours with sawdust at 12% moisture content and operating at a feed rate of 25 kg/in at an excess air value of approximately 250%.