A Study on Combustion Properties of Torrefied Mixed Waste-biomass

Since the Paris convention on climate change adopted at the plenary session of the conference of the Parties to the United Nations Framework Convention on Climate Change(UNFCCC) in December 2015, governments around the world are trying to achieve a reduction of greenhouse gases. Korea also encouraging the use of renewable energy to reduce greenhouse gas emissions, through the establishment of the 'Renewable Energy 3020' implementation plan, it is expanding the portion of power generation using waste, bio, wind, and solar energy. Use of waste and biomass as a source of energy is one of the means to fulfill the obligation to increase the supply of renewable energy and to reduce greenhouse gases. Torrefaction technology is a process of producing fuel by heat treatment for a certain period of time in a low-temperature reducing atmosphere. The crushability is improved by torrefaction reaction, and it is easy to dual fuel combustion. And it becomes hydrophobic and contamination by microorganisms is reduced. In adition, it is possible to modify the low-grade fuel by increasing the calorific value per mass of the sample through the torrefaction reaction. In this study, the characteristics of flue gas generated when torrefied materials are burned are compared and analyzed. for analyzing the combustion properties of torrefied materials The gas components (CO, CO2, THC, CH4, NOX, HCl) generated during the combustion of torrefied materials and coal were compared and analyzed. It is shown that it can be used as a solid fuel because it is included in the coal band of Van Krevelen diagram which is diagrammed by using elemental analysis result of torrefied materials. As a result of comparison between coal and solid samples, all nine samples showed trends of flue gas generation similar to coal.