Ecole des Mines de Nantes, GEPEA, UMR-CNRS 6144,4 rue Alfred Kastler, BP20722, 44307 Nantes Cedex 03, France.
J Hazard Mater. 2012 Feb 29;205-206:222-8. doi: 10.1016/j.jhazmat.2011.12.062. Epub 2011 Dec 31.
The regeneration experiments of dichloromethane from activated carbon bed had been carried out by both hot nitrogen and steam to evaluate the regeneration performance and the operating cost of the regeneration step. Factorial Experimental Design (FED) tool had been implemented to optimize the temperature of nitrogen and the superficial velocity of the nitrogen to achieve maximum regeneration at an optimized operating cost. All the experimental results of adsorption step, hot nitrogen and steam regeneration step had been validated by the simulation model PROSIM. The average error percentage between the simulation and experiment based on the mass of adsorption of dichloromethane was 2.6%. The average error percentages between the simulations and experiments based on the mass of dichloromethane regenerated by nitrogen regeneration and steam regeneration were 3 and 12%, respectively. From the experiments, it had been shown that both the hot nitrogen and steam regeneration had regenerated 84% of dichloromethane. But the choice of hot nitrogen or steam regeneration depends on the regeneration time, operating costs, and purity of dichloromethane regenerated. A thorough investigation had been made about the advantages and limitations of both the hot nitrogen and steam regeneration of dichloromethane.
采用热氮气和蒸汽对活性炭床层中的二氯甲烷进行了再生实验，以评估再生性能和再生步骤的运行成本。采用析因实验设计（FED）工具优化了氮气温度和氮气表面速度，以在优化的运行成本下实现最大再生。吸附步骤、热氮气和蒸汽再生步骤的所有实验结果均通过 PROSIM 模拟模型进行了验证。基于二氯甲烷吸附量的模拟与实验之间的平均误差百分比为 2.6%。基于氮气再生和蒸汽再生的二氯甲烷再生量的模拟与实验之间的平均误差百分比分别为 3%和 12%。实验表明，热氮气和蒸汽再生均可再生 84%的二氯甲烷。但是，热氮气或蒸汽再生的选择取决于再生时间、运行成本和再生二氯甲烷的纯度。对热氮气和蒸汽再生二氯甲烷的优缺点进行了深入研究。
