Desulfurization L2

Created Mittwoch 21 Juni 2017

Basic model of a desulfurization reaction.

1. Purpose of Model

Replaceable model to be used in GasVolumes:Volume_Gas_L2_Chem to simulate an ideal desulfurization facility.

2. Physical Insight

This replaceable model is compatible to models of level of detail L2 according to Brunnemann et al. [1].

3. Limits of Validity


4. Interfaces

The model communicates via outer models and records. Thus its expects to have:

5. Nomenclature

A table referencing the nomenclature in the source code, the descriptions of variables and the "human-readable"

6. Governing Equations

Mass and energy balances are calculated in GasVolumes:Volume_Gas_L2_Chem.

The process is modelled according to the chemical equation for the conversion of calcium carbonate, water, oxygen and sulfur dioxide to gypsum and CO2:

It is assumed that the outlet gas mass flow is saturated with water.

Conservation of Components

The inflowing molar flow rates are calculated with the specific component mass flow as and the molar mass. The required molar flow rates needed for the separation reaction are calculated as follows


The outlet molar flow rate of CaSO4-H2O and CO2 are calculated with the separation rate:

The separated mass flow rate of SOx is calculated with the separation rate:

The equations for calculation of the other mass flow rates needed are neglected here due to simplicity. Please have a look at the code.. The outlet mass flow is then calculated according to the following equation:

The outlet composition mass flows are calculated as follows:




The other components are not affected by the chemical conversion an eqal the inlet composition mass flows.


The electric power consumption is calculated with the standardised volume flow rate at the component inlet at 1 bar and 20 °C:



7. Remarks for Usage


8. 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 Simulationof Coal-Fired Power Plants with CO2 capture", 9th Modelica Conference, Munich, Germany, 2012

9. Version History


Backlinks: ClaRa:Components:FlueGasCleaning:Desulfurization:Desulfurization L2 ideal