Abstract
Abstract Co-Firing biomass in the form of wood dust or sawdust with natural gas is a new concept, which was performed in a specialized burner from the Riga Technical University. In order to test the burner, primary experimental test runs were performed to get an overview of flue gas behaviour. The addition of sawdust increased CO values but O2 values remained very low in the flue gases. This was due to technical problems with the fuel. Co-Firing has the potential to reduce CO2 emissions of energy production and wood dust is an abundant by-product of forestry, therefore the potential has to be explored in future research.
Highlights
The country of Latvia does not possess its own natural gas deposits
The technology of co-firing, which is presented in this paper, aims to substitute part of the use of natural gas in boilers with renewable resources, which in turn lowers the total demand for gas
The first observation shows a decrease in flue gas temperature when biomass is added, from approximately 700 °C to around 550 °C, while the amount of CO2 rises quickly from 8 % and remains at around 16 %, the O2 share decreases symmetrically from 12 to less than 1 %
Summary
The country of Latvia does not possess its own natural gas deposits. It relies heavily on the import of natural gas from other countries, such as Russia and Lithuania. In the year 2018 alone, a total of 1422 million m3 were imported over the whole year, with import rates being even higher in the winter months [2]. Becoming more independent from natural gas imports is a preferable goal. Several technologies have been shown to be able to achieve this, from renewable energy sources to more efficient resource use and smart grids. The technology of co-firing, which is presented in this paper, aims to substitute part of the use of natural gas in boilers with renewable resources, which in turn lowers the total demand for gas
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