CoalReactionZone

Created Tuesday 18 June 2013

Model used to perform an ideal combustion calculation inside furnace models.

1. Purpose of Model

The model is used to perform an ideal combustion calculation of coal according to its elemental composition. The produced amount of CO and NOx, as well as the fraction of ash turned into slag is given by parameters.

2. Level of Detail, Physical Effects Considered and Physical Insight

2.1 Level of Detail

Referring to Brunnemann et al. [1], this submodel refers to the level of detail L2.

2.2 Physical Effects Considered

Chemical conversion

3. Limits of Validity

This model calculates the conversion of coal ideally.
Combustion kinetics are not considered.
Different NOx species are treated as NO.

4. Interfaces

5. Nomenclature

6. Governing Equations

6.1 Governing Model Equations

Chemical conversion

The amounts of produced species are calculated as follows:

The produced species are calculated as follows (please be aware that in most cases the amount of produced oxygen is negative, thus is consumed):

Please be aware that this model calculates the amount of products for 1 kg of coal burned, thus the product vector has to be multiplied with the actual mass flow rate of burned coal.

Summary

to be completed...

7. Remarks for Usage

This model is applied in furnace models where combustion takes place.

9. References

[1] Johannes Brunnemann and Friedrich Gottelt, Kai Wellner, Ala Renz, André Thüring, Volker Röder, Christoph Hasenbein, Christian Schulze, Gerhard Schmitz, Jörg Eiden: "Status of ClaRaCCS: Modelling and Simulation of Coal-Fired Power Plants with CO2 capture", 9th Modelica Conference, Munich, Germany, 2012

10. Authorship and Copyright Statement for original (initial) Contribution

Author:
DYNCAP/DYNSTART development team, Copyright 2011 - 2022.
Remarks:
This component was developed during DYNCAP/DYNSTART projects.
Acknowledgements:
ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).
CLA:
The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf
By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.

11. Version History

Date - Version - Description of changes - author/revisor
25.06.2013 - v0.1 - initial implementation of the model - Lasse Nielsen, TLK-Thermo GmbH