Modelling of Total Plants Including Gas Washing Using the Simulation Tool EBSILON Professional. Dr. Reiner Pawellek Evonik Energy Services

Transcription

1 Modelling of Total Plants Including Gas Washing Using the Simulation Tool EBSILON Professional Dr. Reiner Pawellek Evonik Energy Services

2 Am I on the right conference? Yes: 9 talks at this conference mention Ebsilon explicitly Seeing what our customers are doing The authors of these talks are from German-speaking countries Giving international scientists and engineers an opportunaty to compare their tools Some talks mention tasks that they could not solve with Ebsilon Learning about challenges of the future to improve Ebsilon Datum Name der Präsentation Schulung EbsScript Seite 2

3 1. Plant Simulations 2. Material Table Properties 3. Handling of Unavailable Materials 4. Programmable Components Seite 3

4 Plant Simulations Whyisa simulation tool helpful? Total performance calculation Variations in topology and parameters Detailed results on thermodynamical and chemical quantities on all pipes Based on: Lambertz, J.; Ewers, J; Clean Coal Power The response of power plant engineers to climate protection challenges; VGB PowerTech 5/2006, pp Seite 4

5 Plant Simulations Oxyfuel Plant Seite 5

6 1. Plant Simulations 2. Material Table Properties 3. Handling of Unavailable Materials 4. Programmable Components Seite 6

7 Material Properties Libraries in Ebsilon Water steam (IFC67, IAPWS97) Ideal gas mixtures (FDBR, VDI) Real gas mixtures Single real fluids with phase transition: CO2, NH3, H2, He, Propane, n- and iso-butane, R134a Special mixtures (NH3/Water, Water/LiBr) REFPROP: real mixtures of real fluids (with phase transition): 84 pure fluids and 55 predefined mixtures Seite 7

8 Material Properties Example Results: RECTISOL process Case 1: Real mixture methanol / CO2 (REFPROP) Case 2: Methanol as real fluid (REFPROP), CO2 as ideal gas (FDBR) Typical temperature differences between the cases: up to 8 K Calculation time: 75 / 3 seconds Seite 8

9 Material Properties Compromise Use high-precise libraries only where you need them Special Ebsilon components: Fluid converter Fluid reconverter Library specificator Seite 9

10 1. Plant Simulations 2. Material Table Properties 3. Handling of Unavailable Materials 4. Programmable Components Seite 10

11 Handling of Unavailable Materials What do you know about the fluid? Nothing take another fluid with similar properties Specific heat capacity at a certain point take another fluid with similar properties and a cp correction factor Specific heat capacity as a function of T take the user-defined fluid with cp polynomial Complete property function take the DLL interface to integrate the property functions Seite 11

12 1. Plant Simulations 2. Material Table Properties 3. Handling of Unavailable Materials 4. Programmable Components Seite 12

13 Programmable Components Macros created using Ebsilon components additional calculations may be added using EbsScript flexibility in graphics, connections, specification and result values Seite 13

14 Programmable Components Kernel Scripting calculation code is written by the user within Ebsilon (EbsScript) executed in each iteration step setting of values (M2=100) or setting of equations (M2-M1=0) DLL interface calculation code is written in an external programming environment Seite 14

15 Summary Ebsilon can be used for the simulation of modern plants with new technologies Ebsilon is developped continuously to meet the demands of the engineers new components, new fluids By programmable interfaces, Ebsilon can be extended by the customer for special purposes Partners are welcome Seite 15

16 Thank you for your attention! Dr. Reiner Pawellek Evonik Energy Services GmbH Wetzbach 35 D Zwingenberg Tel Seite 16

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