Catalytic dry (CO2) reforming of waste plastics was carried out in a two stage, pyrolysis-catalytic reforming fixed bed reactor to optimise the production of syngas (H2 + CO). The effects of changing the process parameters of, catalyst preparation conditions, catalyst temperature, CO2 input rate and catalyst:plastic ratio were investigated. The plastics used was a mixture of plastics simulating that found in municipal solid waste and the catalyst used was Ni-Co-Al2O3. The results showed that changing each of the process conditions investigated, all significantly influenced syngas production. An increase of 17% of syngas production was achieved from the experiment with the catalyst prepared by rising-pH technique compared to preparation via the impregnation method. The optimum syngas production of 148.6 mmolsyngas g−1swp was attained at the catalytic dry reforming temperature of 800 °C and catalyst:plastic ratio of 0.5. The increase of CO2 input rate promoted a higher yield of syngas.
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机译：废塑料的催化干法（CO2）重整是在热解催化重整固定床反应器两阶段中进行的，以优化合成气（H2 + CO）的生产。研究了改变工艺参数，催化剂制备条件，催化剂温度，CO2输入速率和催化剂：塑料比的影响。所使用的塑料是模拟的塑料混合物，可在城市固体废物中发现，所用的催化剂为Ni-Co-Al2O3。结果表明，改变所研究的每种工艺条件，均显着影响合成气的生产。与通过浸渍法制备的催化剂相比，使用通过升高pH值技术制备的催化剂的实验使合成气产量提高了17％。在800℃的催化干重整温度和0.5的催化剂：塑料比下，最佳合成气产量为148.6 mmolsyngas g-1swp。 CO 2输入速率的增加促进了合成气的更高产率。
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