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Effect of steam supply to the air-blown gasifier on hot syngas desulphurization
| Content Provider | Scilit |
|---|---|
| Author | Nikitin, A. D. Abaimov, N. A. Butakov, E. B. Burdukov, A. P. Ryzhkov, A. F. |
| Copyright Year | 2019 |
| Description | Journal: Journal of Physics: Conference Series The IGCC technology serves to efficiently produce thermal and electrical energy with minimal impact on the environment. In operating IGCC, wet desulphurization is used at temperatures below 200°C. The use of hot desulphurization at temperatures around 500°C will significantly improve IGCC efficiency. The preferred sorbent for hot gas cleaning is ZnO. At temperature of 450-500°C, ZnO begins decomposing because of reactions with syngas components (primarily hydrogen). Steam impedes reaction of ZnO with $H_{2}$ and increases ZnO thermal stability. Syngas $H_{2}/H_{2}$O ratio is determined by gasifier operation mode. The purpose of this work is to determine maximum temperature of hot gas cleaning depending on condition of ZnO-sorbent thermal stability and steam-air-blown mechanically activated coal gasifier operation mode. To determine the effect of steam supply to syngas composition, experiments were performed on entrained-flow gasifier (1 MW). Experimental results were processed using thermodynamic analysis to determine idealized syngas composition and CFD-modeling to determine real experiment process parameters. Syngas $H_{2}$O content was determined by CFD-modeling results. Study of ZnO-sorbent thermal stability depending on $H_{2}$ concentration and syngas $H_{2}/H_{2}$O ratio was performed by TGA. As a result of experimentally confirmed thermodynamic calculations, ZnO-sorbent thermal stability was found to increase to 815°C due to steam dilution. |
| Related Links | https://iopscience.iop.org/article/10.1088/1742-6596/1369/1/012029/pdf |
| ISSN | 17426588 |
| e-ISSN | 17426596 |
| DOI | 10.1088/1742-6596/1369/1/012029 |
| Journal | Journal of Physics: Conference Series |
| Issue Number | 1 |
| Volume Number | 1369 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2019-11-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Conference Series Energy and Fuel Technology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |
