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Aspen Plus process-simulation model: Producing biogas from VOC emissions in an anaerobic bioscrubber
Journal of Environmental Management ( IF 8.0 ) Pub Date : 2018-02-21 , DOI: 10.1016/j.jenvman.2018.02.040
D. Bravo , F.J. Álvarez-Hornos , J.M. Penya-roja , P. San-Valero , C. Gabaldón

A process-simulation model for a novel process consisted of an anaerobic bioscrubber was developed in Aspen Plus®. A novel approach was performed to implement the anaerobic reactor in the simulation, enabling it to be connected to the scrubber. The model was calibrated and validated using data from an industrial prototype that converted air emissions polluted with volatile organic compounds with an average daily concentration of 1129 mgC Nm−3 into bioenergy for more than one year. The scrubber, which showed a removal efficiency within 83–93%, was successfully predicted with an average absolute relative error of 5.2 ± 0.08% using an average height-to-theoretical-plate value of 1.05 ± 0.08 m and 1.37 ± 0.11 m for each of the two commercial packing materials used, respectively. The anaerobic reactor, which treated up to 24 kg of chemical oxygen demand m−3 d−1 with efficiencies of about 93%, was accurately simulated, both in effluent-stream characteristics and in the biogas stream. For example, the average absolute error between the experimental biogas production and the model values was 19.6 ± 18.9%. The model proved its capability as a predictive tool and an aid in design, resulting in savings of time and money for practitioners. In addition, the approach proposed can be expanded to other bioprocesses that include unit operations.



中文翻译:

Aspen Plus过程模拟模型:通过厌氧生物洗涤塔中的VOC排放产生沼气

一种新颖的过程的过程仿真模型由厌氧生物净在Aspen Plus的开发®。进行了一种新颖的方法以在模拟中实施厌氧反应器,使其能够连接到洗涤塔。使用来自工业原型的数据对模型进行校准和验证,该工业原型将被挥发性有机化合物污染的空气排放转化为日平均浓度为1129 mgC Nm -3。转化为生物能源超过一年。洗涤塔的去除效率在83-93%之间,可以成功预测其平均绝对相对误差为5.2±0.08%,而理论塔板的平均高度相对于理论塔板值为1.05±0.08 m和1.37±0.11 m。分别使用了两种商业包装材料。厌氧反应器,处理了多达24 kg的化学需氧量m -3 d -1在废水流特性和沼气流中,均能准确模拟效率约为93%的废水。例如,实验沼气产量与模型值之间的平均绝对误差为19.6±18.9%。该模型证明了其作为预测工具和设计辅助功能的能力,从而为从业人员节省了时间和金钱。另外,所提出的方法可以扩展到包括单元操作的其他生物过程。

更新日期:2018-02-21
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