Use of the Energy Potential of Organic Waste during its Incineration at Recycling Facility

Abstract

To develop recommendations for improving the efficiency of the use of resource potential of organic waste, studies were carried out on the process of their thermal treatment using the example of plant manufactured by company Wellons type 2D6C8.AO. The plant is operated at one of the enterprises of the pulp and paper industry and is designed to generate process steam both by burning primary gas fuel and by using as a fuel mixture different types of organic waste (bark and wood waste, wood chips and sewage sludge). Based on the results obtained, the criteria for estimate the quality of fuel mixture: ash content (not more than 5 %), humidity (not more than 58 %), calorific value (not less than 4000 J/g), homogeneity of the component and fractional composition of the fuel mix (grain size not more than 25–50 mm) were worked out. Taking into account the developed criteria, the optimum composition of fuel mixture was determined (bark and wood waste 70–80 %, pulp and paper sludge 20–30 %, wood chips 4 %). As the main measures to reduce and stabilize the humidity of the fuel used for combustion, the introduction of dry debarking of wood, preliminary mechanical dewatering of the pulp and paper sludge, additional dosing in the main waste stream of waste formed in auxiliary industries (wooden pallets, boxes, paper scrap, etc.) is recommended. The introduction of the developed measures will prevent the disposal of waste in the environment and minimize the impact of the landfills on the geosystems.