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Simulation of the Chemical Looping Combustion Process of Coal with a Synthetic Cu-Based Oxygen Carriers
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kramp, Marvin Thon, Andreas Hartge, Ernst-Ulrich Heinrich, Stefan Werther, Joachim |
| Copyright Year | 2013 |
| Abstract | A fluidized bed reactor model was implemented that allows the simulation of multiple heterogeneous and homogeneous reactions. This reactor model is used for the steady-state flow sheet simulation of the pilot plant for chemical looping combustion of the Hamburg University of Technology. The pilot plant is equipped with a two-stage fuel reactor. The simulated experiments were carried out with a Cu based oxygen carrier and German lignite dust. The developed tool is used in this study to investigate the behavior of the pilot plant and gives additional insights into the occurring phenomena. Based on the simulations it is concluded that the fuel does not mix into the bed of oxygen carrier of the lower stage of the fuel reactor which leads to large quantities of combustible gases in the off-gas of the first fuel reactor stage. INTRODUCTION The flow sheet simulation of solids processes is still a challenging task due to the complicated handling of distributed properties whereas the flow sheet simulation of fluid processes is state of the art. SolidSim is a steady-state flow-sheet software package for solids processes and has filled the gap in the past years. Unfortunately there is still a lack models for several unit operations like fluidized bed reactors. Hence in the course of this work a fluidized bed reactor module was developed and is applied to a complex process, the chemical looping combustion process of coal. Chemical looping combustion allows an inherent separation of the carbon dioxide produced during the conversion of carbonaceous fuels. The process is based on a solid oxygen carrier (OC) that selectively consumes oxygen in an air reactor and provides this oxygen to the fuel conversion in the fuel reactor. A mixing of air nitrogen with the carbon containing off-gas is thus prevented. Recently a chemical looping combustion test plant for solid fuels with a rated power of 25 kWth was erected and commissioned at the Hamburg University of A ir R ea ct o r Air Me MeO O2-depleted air |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://dc.engconfintl.org/cgi/viewcontent.cgi?article=1038&context=fluidization_xiv |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
