75 / 2016-05-01 03:28:52

SOLUTIONS FOR ORGANIC RESIDUES DISPOSAL WITH ENERGY RECOVERY AS DERIVED FUELS AND ELECTRICITY

waste treatment,energy valorization,gasification,pyrolysis

The paper presents solutions for food industry sector waste disposal with energy recovery. Different thermo-chemical processes were applied to solid waste mixtures for their neutralization and conversion into alternative solid, liquid and gaseous fuels. The feedstock used in the experimental campaign was sampled directly from the waste source and consists in meat and bones residues with high water and ash content. The complete waste to power conversion chain solution is presented: pre-treatment stage; thermo-chemical conversion stage, power generation stage. The influence of feedstock properties (water content, chemical composition, specific energy content) and process parameters (temperature, residence time, air equivalent ratio) on derived fuels characteristics and power output was investigated. An original waste to energy conversion unit dedicated to potential dangerous waste neutralization using air and steam gasification is presented. The installation was designed to comply with specific requirements of waste treatment units. High energy efficiency of the conversion line is assured by internal energy recovery of residual heat. Unit processing capacity is up to 150 kg/h of raw waste, while the power output may reach 50 kWel. The installation and processes can be used for the conversion of a wide range of organic waste and also all types of biomass. The influence of feedstock properties on process run performance was investigated for each transformation stage. By custom engineering design, a various range of waste products can be used as alternative energy sources leading to their efficient and cost-less disposal.