Biomass as Fuel in Small Boilers (PDF 6.4 - APO Asian Productivity ...

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Biomass as Fuel in Small Boilers Figure 1-4 Element omposition and heating value of various fuels Figure 1-5 Biomass fuel heating value - 6 -
2. BIOMASS PREPARATION, STORAGE, HANDLING, AND CONVERSION TECHNOLOGIES 2.1 AVAILABILITY OF BIOMASS It is well known that biomass availability is highly influenced by crop patterns and regional variations of weather and seasons. Added to these factors is the diffused availability of biomass, which makes collection and transport a difficult and costly task. These factors impose constraints on the total quantity of biomass that can be made economically available to industry. If an industry is going to use biomass as fuel in a boiler, the following factors should be taken into account. • Even before biomass began to be used for boilers, it was being used by local industries, hotels, and rural populations to meet their thermal energy requirements due to the increasing cost of fossil fuels. • All the biomass available in a region is not accessible at a reasonable price. • The supply of biomass changes with every season and every year based on crop patterns and weather conditions such as floods and droughts. 2.2 FUEL COLLECTION AND LOGISTICS With the increased cost of fossil fuel and the low cost of steam produced by biomass-fired boilers, more industries will switch over to biomass firing in their boilers. In some South Asian countries the situation has changed to the extent that manufacturers are looking for agricultural or forest residue (woody biomass) that can be burned in their boilers. One of the main reasons is the haphazard way biomass is collected. Normally the availability of biomass varies from region to region, and the participation of village communities is essential to ensure a regular supply of biomass. The module in Figure 2-1 is proposed for biomass collection and logistics. - 7 -
Page 1: From: Biomass as Fuel in Small Boil
Page 5 and 6: CONTENTS List of Tables v List of F
Page 7 and 8: LIST OF TABLES 1-1 Residue from maj
Page 9 and 10: 1. INTRODUCTION TO BIOMASS AS FUEL
Page 11 and 12: - 3 - Introduction to Biomass as Fu
Page 13: Figure 1-3 Various biomass energy s
Page 17 and 18: Biomass Preparation, Storage, Handi
Page 25 and 26: ( ... Continued) Draft Conditions B
Page 27 and 28: Biomass-based Fluidized Bed Combust
Page 37 and 38: - 29 - Performance Evaluation of Bi
Page 39 and 40: i. Percentage heat lost due to dry
Page 41 and 42: Solution: Step 1) Find the theoreti
Page 43 and 44: 5. RETROFITTING OF COAL-/OIL-FIRED
Page 45 and 46: Retrofitting of Coal-/Oil-Fired Boi
Page 47 and 48: Retrofitting of Coal-/Oil-Fired Boi
Page 49 and 50: 3. Close drain cock 4. Close steam
Page 51 and 52: ( ... Continued) Air leaks on water

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