Optimizing operational parameters for syngas production of Texaco coal-water slurry gasifier studied in this paper is a complicated nonlinear constrained problem concerning 3 BP(Error Back Propagation) neural networks...Optimizing operational parameters for syngas production of Texaco coal-water slurry gasifier studied in this paper is a complicated nonlinear constrained problem concerning 3 BP(Error Back Propagation) neural networks. To solve this model, a new 3-layer cultural evolving algorithm framework which has a population space, a medium space and a belief space is firstly conceived. Standard differential evolution algorithm(DE), genetic algorithm(GA), and particle swarm optimization algorithm(PSO) are embedded in this framework to build 3-layer mixed cultural DE/GA/PSO(3LM-CDE, 3LM-CGA, and 3LM-CPSO) algorithms. The accuracy and efficiency of the proposed hybrid algorithms are firstly tested in 20 benchmark nonlinear constrained functions. Then, the operational optimization model for syngas production in a Texaco coal-water slurry gasifier of a real-world chemical plant is solved effectively. The simulation results are encouraging that the 3-layer cultural algorithm evolving framework suggests ways in which the performance of DE, GA, PSO and other population-based evolutionary algorithms(EAs) can be improved,and the optimal operational parameters based on 3LM-CDE algorithm of the syngas production in the Texaco coalwater slurry gasifier shows outstanding computing results than actual industry use and other algorithms.展开更多
文章采用有机分子焊接方法,将苝-3,4,9,10-四羧酸二酐(PTCDA)分子通过酰胺键焊接于Ti_(3)CN层间,制备了PTCDA分子焊接插层的Ti_(3)CN(Ti_(3)CN-PTCDA)。PTCDA分子焊接不仅扩大了Ti_(3)CN层状结构的层间距,而且提升了其层结构稳定性,从...文章采用有机分子焊接方法,将苝-3,4,9,10-四羧酸二酐(PTCDA)分子通过酰胺键焊接于Ti_(3)CN层间,制备了PTCDA分子焊接插层的Ti_(3)CN(Ti_(3)CN-PTCDA)。PTCDA分子焊接不仅扩大了Ti_(3)CN层状结构的层间距,而且提升了其层结构稳定性,从而显著提高了储钠倍率性能和循环稳定性。在0.1Ag^(-1)电流密度下,Ti_(3)CN-PTCDA材料的比容量经过895次循环后可达127.9 mAh g^(-1),当电流密度提升至5.0Ag^(-1)时仍可保持51.8 mAh g^(-1)。本研究证明,二维储钠材料的层结构对其储钠倍率和循环稳定性有重要影响,该结论为设计高倍率二维储钠材料提供了新思路。展开更多
基金Supported by the National Natural Science Foundation of China(61174040,U1162110,21206174)Shanghai Commission of Nature Science(12ZR1408100)
文摘Optimizing operational parameters for syngas production of Texaco coal-water slurry gasifier studied in this paper is a complicated nonlinear constrained problem concerning 3 BP(Error Back Propagation) neural networks. To solve this model, a new 3-layer cultural evolving algorithm framework which has a population space, a medium space and a belief space is firstly conceived. Standard differential evolution algorithm(DE), genetic algorithm(GA), and particle swarm optimization algorithm(PSO) are embedded in this framework to build 3-layer mixed cultural DE/GA/PSO(3LM-CDE, 3LM-CGA, and 3LM-CPSO) algorithms. The accuracy and efficiency of the proposed hybrid algorithms are firstly tested in 20 benchmark nonlinear constrained functions. Then, the operational optimization model for syngas production in a Texaco coal-water slurry gasifier of a real-world chemical plant is solved effectively. The simulation results are encouraging that the 3-layer cultural algorithm evolving framework suggests ways in which the performance of DE, GA, PSO and other population-based evolutionary algorithms(EAs) can be improved,and the optimal operational parameters based on 3LM-CDE algorithm of the syngas production in the Texaco coalwater slurry gasifier shows outstanding computing results than actual industry use and other algorithms.
文摘文章采用有机分子焊接方法,将苝-3,4,9,10-四羧酸二酐(PTCDA)分子通过酰胺键焊接于Ti_(3)CN层间,制备了PTCDA分子焊接插层的Ti_(3)CN(Ti_(3)CN-PTCDA)。PTCDA分子焊接不仅扩大了Ti_(3)CN层状结构的层间距,而且提升了其层结构稳定性,从而显著提高了储钠倍率性能和循环稳定性。在0.1Ag^(-1)电流密度下,Ti_(3)CN-PTCDA材料的比容量经过895次循环后可达127.9 mAh g^(-1),当电流密度提升至5.0Ag^(-1)时仍可保持51.8 mAh g^(-1)。本研究证明,二维储钠材料的层结构对其储钠倍率和循环稳定性有重要影响,该结论为设计高倍率二维储钠材料提供了新思路。
