Characteristics of Natural Gas Combustion in a Circulating Fluidized Bed
Authored by: Dennis Y. Lu, Edward J. Anthony, Gerhard Löffler, Franz Winter
Corresponding Author: Dennis Y. Lu
A mail can be sent to the corresponding author at email@example.com
This work consists of both empirical measurements and modelling work surrounding emissions of CO and NOx from firing natural gas in a circulating fluidized bed in order to better understand the gas-phase C/H/N/O chemistry. The model provides a good and useful fit.
Natural gas, circulating fluidized bed, combustion, emissions
This paper presents a study of natural gas combustion in a fluidized bed, as a model system for investigating the gas-phase reactions involving C/H/N/O chemistry taking place in the absence of char. The experimental work was conducted using a pilot-scale mini circulating FBC (CFBC) unit of 0.1 m diameter and 5 m height. Combustion characteristics and emissions were investigated by varying the operating conditions and in particular the combustion temperature, fluidizing velocity and bed material. The results fit with the general current consensus that FBC chemistry is associated with super-equilibrium free radical processes, similar to high-temperature flame systems. A CFBC model has been developed based on the general kinetic model and a NO/N2O formation model. It uses the semi-theoretical approach with some measured parameters as inputs and appears to be capable of providing a reasonable description of the nitrogen chemistry and the concentration profiles of NH3, HCN, NO, and N2O for the case of burning natural gas.
DOWNLOAD THE FULL PAPER
Publication in Industrial Combustion
The Editor would like to remind all potential authors that Industrial Combustion is the online journal of the IFRF and is dedicated to publishing the best research on the practical and theoretical aspects of combustion science in industrial applications. To propose a paper, please follow the guidelines which appear on the Industrial Combustion website (see Propose a Paper).
We look forward to receiving your proposals.