NO_x Formation of Biodiesel in Utility Power Plant Boilers. Part A: Influence of Fuel Characteristics

Abstract

The influence of fuel characteristics in the formation of NO during combustion of methyl ester in oil-burner industrial boilers is presented in this paper. Under strictly controlled conditions of combustion, NO formation shows great susceptibility to biodiesel density, ignition delay, oxygen concentration, and adiabatic flame temperature. Results show that the adiabatic flame temperature affects NO formation more than the other variables, and the level of this pollutant exponentially increases with this ideal temperature for combustion. It is also shown that (a) NO formation during combustion of methyl esters linearly change with fuel density, (b) the increase of the combustion pressure reduces the effect of the density on NO formation, (c) the influence of the fuel cetane number on NO formation is intrinsic because it remains constant even when the quality of combustion is enhanced, and (d) in fuel-lean flames, oxygen of the biodiesel chemical structure increases the NO level.

Economy of a utility boiler power plant fueled with vegetable oil, biodiesel, petrodiesel and their prevalent blends

“…1. More detailed description of the burner technical principles can be found elsewhere (Bazooyar et al, 2014). …”

Design, manufacture and test of a micro-turbine renewable energy combustor

“…This analysis shows that the NO is the main component of NOX. The NO forms in the combustor through thermal and prompt mechanisms [73]. These mechanisms depend highly on the combustor local temperatures [74].…”

Process design of carbon dioxide and ethane separation using ionic liquid by extractive distillation

“…This equation expresses the steam balance around the heating device and describes the amount of fuel needed to provide a heat duty of Q p r oc . The rate of the CO 2 emissions for the process is also listed in Table .…”