Paul Olivier   |   2011
Type: Research Report
Topic: Fuels
Country: Vietnam
The authors describe the simplicity of top-lit, updraft (TLUD), forced-air gasifiers. These gasifiers operate quite well on many types of fine biomass such as rice hulls, rice straw, coffee bean husks, bagasse, wood chips, the shells of nuts, pine needles, tobacco waste and so forth. Some types of biomass, such as straw and pine needles, must be compacted or shredded to increase their bulk density. Forestry waste should be chipped. Ideally the moisture content of the biomass should not exceed 12%. Biomass can be sundried, it can be dried thermophilically using a compost fleece, 2 and/or it can be dried using residual gasifier heat.