Model-based kiln control for green cement production
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1 Diagram of the thermal clinker firing process
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2 Contour of the coal and fluff flames for a...
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3 Progression of the gas temperature and material...
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4 Phase diagram along the rotary kiln resulting...
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5 Phase diagram of the simulations with flames of...
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6 Methodology for developing the model-based...
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7 1D balance element for the kiln [4]
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8 Comparison of the temperatures of the 1D-model...
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9 Principle of the model-based observer
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10 KHD kiln optimization system PYROEXPERT®
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12 Constant energy yield level at the kiln burner...
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13 Control actions in the operational trial
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14 Model-based estimation of the temperature...
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11 Test runs on rotary kiln 5 in the Rüdersdorf...
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Das hier ist Bild 14 links
Das hier ist Bild 14 links
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Rüdersdorf cement plant
After the development of the models and the entire automation system was complete, the application of the model predictive control was successfully proved in an initial connection trial at the reference plant CEMEX OstZement in Rüdersdorf.
1 Introduction
Today numerical flow simulation (computational fluid dynamics; CFD) is an established tool for calculating combustion processes. The CFD simulation can demonstrate chemical and thermal interactions and provide local data for unknown process variables that cannot be measured. The information gathered in this way is used not only for detailed plant engineering for optimizing conditions for full combustion, product quality and the formation of hazardous substances, but it also provides an additional benefit for advanced process control.
In this article, the authors describe a tool...
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