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|Title:||Effect of steam supply to the air-blown gasifier on hot syngas desulphurization|
|Authors:||Nikitin, A. D.|
Abaimov, N. A.
Butakov, E. B.
Burdukov, A. P.
Ryzhkov, A. F.
|Publisher:||Institute of Physics Publishing|
|Citation:||Effect of steam supply to the air-blown gasifier on hot syngas desulphurization / A. D. Nikitin, N. A. Abaimov, E. B. Butakov, A. P. Burdukov, et al.. — DOI 10.1088/1742-6596/1369/1/012029 // Journal of Physics: Conference Series. — 2019. — Vol. 1. — Iss. 1369. — 12029.|
|Abstract:||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 H2 and increases ZnO thermal stability. Syngas H2/H2O 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 H2O content was determined by CFD-modeling results. Study of ZnO-sorbent thermal stability depending on H2 concentration and syngas H2/H2O 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. © Published under licence by IOP Publishing Ltd.|
COMPUTATIONAL FLUID DYNAMICS
ENTRAINED FLOW GASIFIERS
IMPACT ON THE ENVIRONMENT
THERMO DYNAMIC ANALYSIS
|metadata.dc.description.sponsorship:||The work was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0006.|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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