The only liquid effluent is the water used to wash the gas. The technology is applicable to all organic material and residual biomass. However, the waste must be sorted beforehand to remove metal, glass and inorganic matter. Installation and operation First, the biomass and residues that make up the raw materials undergo a conditioning stage to obtain a homogeneous mixture at the reactor inflow, with reduced particle size. The raw material can be partially dried if the humidity is too high.
Raw material is fed into the fluidized bed reactor, usually composed of silica sand.
Injection of air or O 2 -enriched air through the screen causes the sand to be suspended, thus favouring mass and heat transfer. Gasification occurs at temperatures of 700 to 900 C, depending on the physico-chemical characteristics of the raw material. Costs Unit size, treatment capacity, the nature of the material to be treated and the mode of energy recovery chosen, all determine the purchase and installation costs for a fluidized bed reactor biomass gasification system. In addition, 24-hour operation of a unit with a capacity of 5 thermic MW requires a team of 8 to 12 people depending on the degree of automation. Qu bec , Gaz M tropolitain , the Universit de Sherbrooke and Kemestrie Inc. to develop Biosyn technology.