Combustion of Solid Biofuels: Problems and Solutions

Denisa Beňová

Bachelor's thesis

Abstract:

The use of fossil fuels for combustion in order to obtain energy has a negative impact on the environment in the form of releasing large amounts of pollutants into the atmosphere. Just the polluted environment and the exhaustion of fossil fuels leads mankind to replace these sources with renewable alternatives such as for example plant biomass. Solid biofuels made from biomass can be used for direct combustion to produce energy for heating buldings, water heating, etc. This Bachelor Thesis entitled "Combustion of Solid Biofuels: Problems and Solutions" was written in the form of literature review from mainly scientific articles obtained from professional web databases. The work summarizes information about the combustion proces, available combustion facilities that have different combustion bed technology, such as fixed-bed combustion or fluidized-bed combustion-there are also improvements to available technologies. Each current combustion technology has its advantages and disadvantages that have been extensively analysed in the present work. The Thesis also describes the combustion proces of biofuels which, comparing to fossil fuels such as coal, do not produce net addition of carbon dioxide, have low sulfur and nitrogen content. On the other hand, the combustion proces is not unproblematic-resulting problems are primary associated with the composition of the materiál used for biofule and affect operation of combustion devices that have been discussed. Problems arising are slagging and fouling, corrosion, ash agglomeration and pollutant emissions. The Thesis presents options and solutions to prevent or minimize these problems.

Keywords

biomass, combustion process, boilers, slagging, fouling

Language used: English

Date on which the thesis was submitted / produced: 21. 4. 2017

Thesis defence

• Supervisor: Ing. Tatiana Ivanova, Ph.D.

Czech University of Life Sciences Prague

Faculty of Tropical AgriSciences

Bachelor programme / field:
Tropical Agriculture / Sustainable Development in the Tropics and Subtropics