Abatement of nitrogen oxides in Energy from Waste: Fortum`s Riihimäki units
Ylä-Mononen, Jaakko (2020)
2020
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:amk-202002272812
https://urn.fi/URN:NBN:fi:amk-202002272812
Tiivistelmä
Fortum`s Riihimäki production facility is a part of company`s City Solutions division. The division is responsible for providing the waste management services. The area has two grate combustion units in addition to hazardous waste incineration unit. The facilities handle large quantities of different waste materials. The purpose of the thesis was to examine nitrogen oxide abatement methods in the facilities. The study was focused on the facility incineration methods and the current abatement methods. The topic was made current by so-called BAT-reference document which was released in 2019 as well as by Fortum`s desire to reduce emissions.
The European Parliament and Council Directive 2010/75/EU about industrial emissions was utilized in the thesis. The directive specifies best available technology for emission control and the reachable limits for the technology. The best available technology has been compiled into so-called BAT-refences and BAT-conclusions. The limit values at the EU level have been introduced in Section 29 in the BAT-conclusions. Hence, the values in Section 29 were used as reference for the thesis.
The Current technology was evaluated in the thesis. The technology was determined, and its suitability was evaluated. The efficiency of the technology could be evaluated by using plants without emission reducing technology. The results are presenting ways to reduce Riihimäki facilities` nitrogen oxide emissions. The emphasis was on changing the boiler parameters with the goal of achieving the desired outcome. These changes do not require major changes in the operation of the boiler. Instead, they have a minor effect on rest of the process. More than a week of testing with different parameters would have necessary to obtain the data, but due to time constraints no tests were performed. The results describe the expected changes in the parameters of the boiler operations.
The European Parliament and Council Directive 2010/75/EU about industrial emissions was utilized in the thesis. The directive specifies best available technology for emission control and the reachable limits for the technology. The best available technology has been compiled into so-called BAT-refences and BAT-conclusions. The limit values at the EU level have been introduced in Section 29 in the BAT-conclusions. Hence, the values in Section 29 were used as reference for the thesis.
The Current technology was evaluated in the thesis. The technology was determined, and its suitability was evaluated. The efficiency of the technology could be evaluated by using plants without emission reducing technology. The results are presenting ways to reduce Riihimäki facilities` nitrogen oxide emissions. The emphasis was on changing the boiler parameters with the goal of achieving the desired outcome. These changes do not require major changes in the operation of the boiler. Instead, they have a minor effect on rest of the process. More than a week of testing with different parameters would have necessary to obtain the data, but due to time constraints no tests were performed. The results describe the expected changes in the parameters of the boiler operations.