Abstract
The article presents the analysis of dust emissions from a low power boiler fired with various solid fuels. The boiler, presented for testing, met the emission conditions for boilers made in the third class in accordance with the PN-EN 303-5: 2012 standard. The solid fuel boiler was equipped with two different retort burners with automatic fuel supply. For the test were used a first generation retort burner with a fixed rim and the next were used second generation retort burner provided with a rotary rim. Both constructions differ in the geometrical model of the primary air supply system to the furnace. During the tests, the work of the burners was controlled using a microprocessor temperature controller. During the research, the rotation time of the screw supplying the fuel through the retort to the furnace was changed, as well as the rotational speed of the blast fan impeller responsible for supplying the combustion air. The purpose of the tests was to check whether the boiler will meet the highest environmental class regardless of the technical parameters of the burner and fuel used. The article describes the research methodology and analysis of the results obtained. The effect of the tests carried out is a comparison of average dust emission values depending on the fuel used and the work settings of a given burner. The test results are a prerequisite for further research work in terms of the impact of primary air supply on the emission of harmful substances.
Highlights
In Poland, during the heating season, drastic deterioration of air quality is noticeable
The main cause of pollution is low emissions due to improperly conducted combustion process in heating solid fuel boilers appliances operating in individual heating
The growing requirements regarding the operation of solid fuel boilers lead to analyzes of the long term operation of boilers under variable load conditions [4] and to an increasing extent reach for numerical methods supporting the design of devices and the combustion process [5, 6]
Summary
In Poland, during the heating season, drastic deterioration of air quality is noticeable. The main cause of pollution is low emissions due to improperly conducted combustion process in heating solid fuel boilers appliances operating in individual heating. Autonomous regulations aimed at combating smog have been introduced The basic ones are: the use of high quality fuel, the change of the burner to a low emission construction. The growing requirements regarding the operation of solid fuel boilers lead to analyzes of the long term operation of boilers under variable load conditions [4] and to an increasing extent reach for numerical methods supporting the design of devices and the combustion process [5, 6]
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