Sorption enhanced catalytic CF

2017, Volume 11, Issue 4

Abstract

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Frontiers of Chemical Science and Engineering >> 2017, Volume 11, Issue 4 doi: 10.1007/s11705-017-1651-1

Sorption enhanced catalytic CF

. Advanced Materials and Devices Laboratory, Korea Institute of Energy Research (KIER), Daejeon 34129, Korea.. Department of Advanced Materials and Chemical Engineering, Catholic University of Daegu, Gyeongbuk 38430, Korea.. Department of Environment and Energy Engineering, Chonnam National University, Gwangju 61186, Korea.. Department of Chemical and Biological Engineering, Korea University, Seoul 136-701, Korea

Accepted: 2017-07-05 Available online: 2017-11-06

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Abstract

In this study, we developed a three-stage catalyst-adsorbent reactor for the catalytic hydrolysis of CF . Each stage is composed of a catalyst bed followed by an adsorbent bed using Ca(OH) to remove HF. The three stages are connected in series to enhance the hydrolysis of CF and eliminate a scrubber to dissolve HF in water at the same time. With a 10 wt-% Ce/Al O catalyst prepared by the incipient wetness method using boehmite and a granular calcium hydroxide as an adsorbent, the CF conversion in our proposed reactor was 7%–23% higher than that in a conventional single-bed catalytic reactor in the temperature range of 923–1023 K. In addition, experimental and numerical simulation (Aspen HYSYS ) results showed a reasonable trend of increased CF conversion with the adsorbent added and these results can be used as a useful design guideline for our newly proposed multistage reactor system.

Keywords

PFCs ; catalytic hydrolysis ; calcium hydroxide ; sorption enhanced ; process simulation

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