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초록· 키워드

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Thermal shock or overheating of WGS catalyst for SEWGS system during hydrogen pre-treatmentcan cause reactivity decay of the catalyst. To select appropriate pre-treatment condition, temperature profiles ofcatalyst bed (or outside fluidized particle bed of bed insert) during pre-treatment were measured and then COconversions of those catalysts during WGS reaction were also measured and compared. Drastic overheating ofcatalyst took place when we reduce catalyst at fixed bed condition and these catalysts showed low CO conversionduring WGS reaction. On the contrary, there was no overheating of catalyst at fluidized bed condition not onlyphysical mixing case but also bed insert case. Spring type bed insert showed acceptable CO conversion even atlow WGS content. Consequently, feasibility of high CO conversion without decay of reactivity of catalyst andholding the WGS catalyst inside the SEWGS reactor as tablet shape were confirmed using spring type bed insert.

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UCI(KEPA) : I410-ECN-0101-2021-550-001998155