Low-NO_x Combustion Method of Ammonia for Hydrocarbon Gas Burner

Abstract

Carbon-free energy sources, such as hydrogen and ammonia, have recently been attracting attention as next-generation fuels. Ammonia has many advantages compared with hydrogen in terms of transportation, such as its ability to be liquefied at atmospheric temperature, but low burning velocity and the high NO_x emissions rate are major issues. If conventional burners for hydrocarbon fuel can be applied to ammonia combustion, it will be easy to switch between hydrocarbon combustion and ammonia combustion with the same burner. In this study, we experimentally investigated the possibility of realizing Low-NO_x ammonia combustion by using a hydrocarbon fuel burner with the two staged combustion method in which fuel and oxidizer are separately injected into the furnace.