Vliv inertních plynů na tvorbů NOx v konvenčním hořáku

Effects of inert gases on NOx formation in the conventional burner

článek ve sborníku ve WoS nebo Scopus

en

Low-calorific fuels have a unique composition and contain inert gases (such as N2, CO2) that are not involved in the combustion process directly, but on the other hand, they can reduce peak temperatures in the flame and therefore reduce the formation of NOx emissions. The goal of this study is to prove whether the conventional burners, which were primarily designed for the combustion of natural gas, can be fired with alternative low-calorific fuels. Another objective is to check sustainability and economic balance. Several types of low-calorific fuels were designed and calculated. The calculations were performed using CHEMCAD simulation software, with emphasis on lower and higher flammability limits and adiabatic flame temperature.

Pro nízko výhřevná paliva je typické, že mají specifické složení a často obsahují inertní plyny (N2, CO2), které se nezúčastňují spalovacího procesu. Tyto plyny mohou mít však vliv na maximální teplotu v plamenu, kdy dochází k jejímu snížení a tím také ke snížení produkce NOx. Cílem této studie je ověřit, zda je možné v hořácích primárně navržených pro spalování zemního plynu spalovat i nízko výhřevná paliva. Dalším dílčím cílem je vyhodnotit udržitelnost a ekonomickou rentabilitu. Bylo navrženo několik typů paliv, které byly pomocí softwaru CHEMCAD zanalyzovány. Důraz byl kladen především na zápalné limity a adiabatickou teplotu plamene.

Low-calorific fuels have a unique composition and contain inert gases (such as N2, CO2) that are not involved in the combustion process directly, but on the other hand, they can reduce peak temperatures in the flame and therefore reduce the formation of NOx emissions. The goal of this study is to prove whether the conventional burners, which were primarily designed for the combustion of natural gas, can be fired with alternative low-calorific fuels. Another objective is to check sustainability and economic balance. Several types of low-calorific fuels were designed and calculated. The calculations were performed using CHEMCAD simulation software, with emphasis on lower and higher flammability limits and adiabatic flame temperature.

inertní plyny, emise NOx, konvenční hořák, spalování

inert gas, NOx, conventional burner, combustion

2015

30.03.2015

Budapest

978-963-12-1257-0

Proceedings of the 7th European Combustion Meeting

187–188

2