Dynamic simulation and transient analysis of a 3 MWth oxy-fuel combustion system

Oxy-fuel technology has been considered as a feasible way to achieve the reduction of CO2 emission. In this article, an oxy-fuel combustion process model was developed using a 3 MWth oxy-fuel combustion test facility as prototype. Both steady state and dynamic model were developed using Aspen Plus and Aspen Plus Dynamics, respectively. The steady state model was validated with test data based on mass balance and energy balance. By defining several typical periods of time which could characterize the dynamic features of the control actuators and the responses of heat transfer and fluid flow processes, the combination of these periods of time was used to reflect the dynamic responses of the system and the simulation results were compared to the test results showing good agreement with the experimental results. Based on the validated dynamic model, transient analysis of typical operation parameters have been performed and the relationships of various inputs and output response have been investigated. All of these results will be helpful to the facility operations and the control system design. (C) 2015 Elsevier Ltd. All rights reserved.