Effect of bed height on the carbon dioxide capture by carbonation/regeneration cyclic operations using dry potassium-based sorbents

다국어 초록 (Multilingual Abstract)

The effect of bed height on CO2 capture was investigated by carbonation/regeneration cyclic operations
using a bubbling fluidized bed reactor. We used a potassium-based solid sorbent, SorbKX35T5 which was manufactured
by the Korea Electric Power Research Institute. The sorbent consists of 35% K2CO3 for absorption and 65% supporters
for mechanical strength. We used a fluidized bed reactor with an inner diameter of 0.05 m and a height of 0.8 m
which was made of quartz and placed inside of a furnace. The operating temperatures were fixed at 70℃ and 150℃
for carbonation and regeneration, respectively. The carbonation/regeneration cyclic operations were performed three
times at four different L/D (length vs diameter) ratios such as one, two, three, and four. The amount of CO2 captured
was the most when L/D ratio was one, while the period of maintaining 100% CO2 removal was the longest as 6 minutes
when L/D ratio was three. At each cycle, CO2 sorption capacity (g CO2/g sorbent) was decreased as L/D ratio was increased.
The results obtained in this study can be applied to design and operate a large scale CO2 capture process composed of two fluidized bed reactors.

참고문헌 (Reference)

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