TY - THES A1 - Schreiber, Matthias T1 - Modellierung von Hydrodynamik und Wärmeübertragung in blasenbildenden Wirbelschichten zur Trocknung von Braunkohle Y1 - 2013 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus-27263 UR - http://opus.kobv.de/btu/volltexte/2013/2726/ ER - TY - CHAP A1 - Wiedemann, Philipp A1 - Krautz, Hans Joachim T1 - Numerical study of gas–solid fluidized beds: Analysis of pressure fluctuations for detection of disturbed fluidization T2 - The 14th International Conference on Fluidization – From Fundamentals to Products N2 - Numerical simulations using the Two Fluid Model are performed for gas-solid bubbling fluidized beds. The possibility to detect disturbances in the fluidization process is investigated by common analysis of pressure fluctuations and variation of the computational domain. Additionally the influences of different particle sizes and superficial gas velocities are studied. The results are compared with bubble properties obtained from a digital image analysis technique KW - Fluidisierung Y1 - 2013 UR - http://dc.engconfintl.org/fluidization_xiv/71 PB - Engineering Conferences International CY - New York ER - TY - GEN A1 - Krautz, Hans Joachim A1 - Nimtz, Michael T1 - Flexible Operation of CCS Power Plants to Match Variable Renewable Energies T2 - Energy Procedia N2 - The German Energiewende is resulting in high grid load changes caused by renewable energies. Therefore flexibility of power plants is getting more and more important. Future CCS power plants are usually equipped with more components than conventional power plants, resulting in a more complex and inert reaction on changes in power output. Additionally, due to the change in price structures and higher fixed and operational costs for CCS power plants, it is harder for them to be economically efficient. This study will show different options to increase the flexibility of CCS power plants and evaluate their benefits. KW - CCS; Flexibility; Post combustion capture; Oxyfuel; Solvent storage; Pipeline Y1 - 2013 U6 - https://doi.org/10.1016/j.egypro.2013.08.034 SN - 1876-6102 VL - 2013 IS - 40 SP - 294 EP - 303 ER - TY - GEN A1 - Abang, Roger Atini A1 - Lisk, Alexander A1 - Krautz, Hans Joachim T1 - Fireside corrosion of superheater materials under oxy-coal firing conditions T2 - Energy Procedia N2 - The present study investigates the fireside corrosion behavior of selected superheater materials, namely: T24, P92, VM12-SHC, A800HT, and 7RE10 under oxy-coal combustion atmospheres. Data on mass change, scale thickness, metal loss, surface morphology and micro-structural characteristics of corrosion products were obtained. The alloy specimens were analyzed by SEM-EDX, light microscopy and X-Ray diffraction techniques. The results after 2000 hours of exposure at a metal surface temperature of 600 °C indicate that metal wastage increased with decreasing Cr-content under oxy-coal conditions. Y1 - 2013 U6 - https://doi.org/10.1016/j.egypro.2013.08.035 SN - 1876-6102 VL - 40 SP - 304 EP - 311 ER - TY - CHAP A1 - Tannert, Daniel A1 - Krüger, Perco A1 - Krautz, Hans Joachim T1 - Untersuchung der alkalischen Druckelektrolysetechnologie am Wasserstoff-Forschungszentrum der BTU Cottbus-Senftenberg T2 - 45. Kraftwerkstechnisches Kolloquium, Dresden, Oktober 2013 Y1 - 2013 SN - 978-3-944310-04-6 ER - TY - CHAP A1 - Merzsch, Matthias A1 - Wiedemann, Philipp A1 - Posselt, Joachim A1 - Krautz, Hans Joachim T1 - Druckaufgeladene Dampfwirbelschicht-Trocknung (DDWT) von Braunkohlen T2 - 45. Kraftwerkstechnisches Kolloquium, Dresden, Oktober 2013 Y1 - 2013 SN - 978-3-944310-04-6 PB - TK-Verl. CY - Neuruppin ER - TY - CHAP A1 - Posselt, Joachim A1 - Krautz, Hans Joachim T1 - Untersuchung des Einflusses der Korngröße auf die Trocknungskinetik von Braunkohle T2 - 45. Kraftwerkstechnisches Kolloquium, Dresden, Oktober 2013 Y1 - 2013 SN - 978-3-944310-04-6 PB - TK-Verlag CY - Neuruppin ER -