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Single-Stage Pressure Swing Adsorption for Producing Fuel Cell Grade Hydrogen
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-03-29 00:00:00 , DOI: 10.1021/acs.iecr.7b05410 Frederico Relvas 1 , Roger D. Whitley 2 , Carlos Silva 3 , Adélio Mendes 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2018-03-29 00:00:00 , DOI: 10.1021/acs.iecr.7b05410 Frederico Relvas 1 , Roger D. Whitley 2 , Carlos Silva 3 , Adélio Mendes 1
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High-purity hydrogen is needed for the growing market of hydrogen-based technologies, in particular for the automotive industry. Thus, efforts are needed to enhance the PSA performance to fulfill the needs of this emerging market. In the present work, a selective adsorbent for carbon monoxide was developed from a commercial activated carbon by wet impregnation of CuCl2·2H2O. Several samples were prepared and characterized concerning adsorption isotherms for H2, CO2, CH4, and CO. The CO capacity was increased from 0.35 mol kgads–1 in the commercial sample to 1.25 mol kgads–1 in Cu-AC-2, at 40 °C and 1 bar. To attest the Cu-AC-2 performance, fixed-bed experiments were conducted namely mono- and multicomponent breakthrough. Finally, the adsorbent was tested in a 4-column lab-scale PSA unit for purifying a synthetic reformate mixture of 70% H2, 25% CO2, 4% CH4, and 1% CO. After optimization, hydrogen with a purity +99.97% was obtained with a CO content of 0.17 ppm at a recovery of 76.2%. Such results meet the requirements for automotive industry regarding CO impurities.
中文翻译：
单级变压吸附法生产燃料电池级氢气
对于不断增长的氢基技术市场，尤其是汽车行业，需要高纯度氢。因此，需要努力提高PSA的性能，以满足这个新兴市场的需求。在本工作中，通过湿法浸渍CuCl 2 ·2H 2 O从商业用活性炭开发出了对一氧化碳的选择性吸附剂。制备了一些样品，并针对H 2，CO 2，CH 4和CO的吸附等温线进行了表征。。CO容量从商业样品中的0.35 mol kg ads –1增加到1.25 mol kg ads –1在Cu-AC-2中，在40°C和1 bar下进行。为了证明Cu-AC-2的性能，进行了固定床实验，即单组分和多组分突破。最后，该吸附剂在4列的实验室规模的PSA单元中测试纯化的70％的合成的重整混合物H 2，25％CO 2，4％CH 4，和1％的CO。优化之后，氢气，纯度获得+ 99.97％的CO含量为0.17 ppm，回收率为76.2％。这样的结果满足了汽车工业对CO杂质的要求。
更新日期：2018-03-30
中文翻译：
单级变压吸附法生产燃料电池级氢气
对于不断增长的氢基技术市场，尤其是汽车行业，需要高纯度氢。因此，需要努力提高PSA的性能，以满足这个新兴市场的需求。在本工作中，通过湿法浸渍CuCl 2 ·2H 2 O从商业用活性炭开发出了对一氧化碳的选择性吸附剂。制备了一些样品，并针对H 2，CO 2，CH 4和CO的吸附等温线进行了表征。。CO容量从商业样品中的0.35 mol kg ads –1增加到1.25 mol kg ads –1在Cu-AC-2中，在40°C和1 bar下进行。为了证明Cu-AC-2的性能，进行了固定床实验，即单组分和多组分突破。最后，该吸附剂在4列的实验室规模的PSA单元中测试纯化的70％的合成的重整混合物H 2，25％CO 2，4％CH 4，和1％的CO。优化之后，氢气，纯度获得+ 99.97％的CO含量为0.17 ppm，回收率为76.2％。这样的结果满足了汽车工业对CO杂质的要求。
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