Converting Waste Agricultural Biomass into a Resource - UNEP

2.5 MW Cogeneration Plant 65
Thailand, Commercial
Crop
Residue
Process
Equipment
Main Products
Rice
Husk
Combustion
Boiler
Super heated steam to generate hot water for
paddy dryers
Production Capacity
• a step grate/boiler producing 17 tonnes of superheated steam at 35 bar and
equipped with automatic ash removal system;
• a 2.5 MW multi-stage fully condensing turbo-generator
Detailed Process Description
• a rice husk silo, a conveying and automatic boiler feeding system;
• a step grate/boiler producing 17 tonnes of superheated steam at 35 bar and
equipped with automatic ash removal system;
• a 2.5 MW multi-stage fully condensing turbo-generator;
• heat exchangers using boiler flue gas and/or superheated steam to generate
hot water for paddy dryers.
Price of Machine
The total investment cost of the project was Euro 3.6 million, excluding civil
works and building structures.
GHG Emission Reduction Potential
Total GHG avoided by implementing this rice husk boiler is around 7,000
tonnes of CO2 equivalent per year.
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