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A Detailed One-Dimensional Hydrodynamic and Kinetic Model for Sorption Enhanced Gasification
| Content Provider | MDPI |
|---|---|
| Author | Beirow, Marcel Parvez, Ashak Mahmud Schmid, Max Scheffknecht, Günter |
| Copyright Year | 2020 |
| Description | Increased installation of renewable electricity generators requires different technologies to compensate for the associated fast and high load gradients. In this work, sorption enhanced gasification (SEG) in a dual fluidized bed gasification system is considered as a promising and flexible technology for the tailored syngas production for use in chemical manufacturing or electricity generation. To study different operational strategies, as defined by gasification temperature or fuel input, a simulation model is developed. This model considers the hydrodynamics in a bubbling fluidized bed gasifier and the kinetics of gasification reactions and CO2 capture. The CO2 capture rate is defined by the number of carbonation/calcination cycles and the make-up of fresh limestone. A parametric study of the make-up flow rate (0.2, 6.6, and 15 kg/h) reveals its strong influence on the syngas composition, especially at low gasification temperatures (600–650 °C). Our results show good agreement with the experimental data of a 200 kW pilot plant, as demonstrated by deviations of syngas composition (5–34%), lower heating value (LHV) (5–7%), and M module (23–32%). Studying the fuel feeding rate (22–40 kg/h), an operational range with a good mixing of solids in the fluidized bed is identified. The achieved results are summarized in a reactor performance diagram, which gives the syngas power depending on the gasification temperature and the fuel feeding rate. |
| Starting Page | 6136 |
| e-ISSN | 20763417 |
| DOI | 10.3390/app10176136 |
| Journal | Applied Sciences |
| Issue Number | 17 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-09-03 |
| Access Restriction | Open |
| Subject Keyword | Applied Sciences One-dimensional Seg Model Dual Fluidized Bed Sorbent Deactivation Hydrodynamics Kinetics Fuel Feeding Rate Biomass |
| Content Type | Text |
| Resource Type | Article |
