Catalytic Air Gasification of Plastic Waste (Polypropylene) in Fluidized Bed. Part I: Use of in-Gasifier Bed Additives

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• 作者：Jes&uacute ; s A. Sancho ; Marí ; a P. Aznar ; José ; M. Toledo
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2008
• 出版时间：February 20, 2008
• 年：2008
• 卷：47
• 期：4
• 页码：1005 - 1010
• 全文大小：148K
• 年卷期：v.47,no.4(February 20, 2008)
• ISSN：1520-5045

文摘

Gasification of 100 wt % polypropylene waste was carried out for this work. The main objective of this studywas to compare the effectiveness of tar elimination by some additives in the gasifier bed with an inert bed.Dolomite and olivine were used as in-gasifier bed additives. Dolomite was more active than olivine whenusing the same amount in the gasifier bed (30 wt %). Tar content was reduced by 92% when dolomite wasused, whereas the reduction of tar with olivine was 40% when compared with an inert bed. However, dolomitecaused a few problems by plugging the gas cleaning devices because of the high amount of particulates; thisdid not happen with olivine. Therefore, olivine was used as the preferred gasifier bed material. The bed wasthen tested with 100 wt % olivine, which is a hard material. The results achieved were good and promising,obtaining from the gasifier a tar content of 2 g/nm³ at the exit, with an L.H.V. of 6 MJ/Nm³ and a gas yieldof 6 Nm³/kg_daf.