Design,Development and Testing of Circulating Fluidised Bed Combustor for Incineration of Agriwaste

Abstract

The increasing problem of the disposal of solid waste has presented many a city with a dilemma while choosing suitable disposal methods. The traditional means of disposal of solids wastes like coal washery rejects and middling, municipality waste, rice husk, saw dust etc. have been open dumping, land filling or dumping in the sea. These practices have been discouraged due to non availability of land and new environmental legislation. In India, fluidised bed combustion technology is gradually emerging as a potential technology for the incineration of solid wastes like washery rejects and middling, rice husk, saw dust and municipality wastes etc. a number of small scale fluidised bed combustion power plants have been commissioned in India in recent past. In the present work some components of a laboratory scale circulating fluidised bed combustor have been designed and developed in the department. Agriwaste briquettes were also prepared and tested in the CFBC system. A mathematical model was also developed to study the physico-chemical parameters of a 10 MW atmospheric FBC system at Jalkheri (Fatehgarh Sahib). Effect of particle size and composition on superficial velocity, minimum fluidisation velocity and bubble diameter were investigated.