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The High-Temperature Winkler process (HTWTM), which has been developed by the companies Rheinbraun and Uhde in the mid-70s of the 20th century, is an evolution of the Winkler-fluidized bed gasification process. The gasifier is divided into two zones, the bubbling fluidized bed operated at temperatures well below the ash softening point, and the freeboard operated at higher temperatures in order to...
The Euler–Lagrange approach combined with a deterministic collision model, so-called discrete element method, is investigated. In this work, the physical values of fluid and particle phases are determined in separated grids. The proposed procedure allows the variation of the fluid grid resolution independent of the particle size and consequently improves the calculation accuracy. A validation study...
The Carbonate Looping process is a promising technology for post-combustion CO 2 capture from power plants by means of CaO in a system of two fluidized bed reactors. The present study focuses on the retrofit with re-powering of an existing 1052 MW el coal-fired power plant. Material and energy balances of the process have been performed using ASPEN PLUS. The effect of make-up mass...
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