Gaohong He

Application of membrane separation technology in postcombustion carbon dioxide capture process

Membrane separation technology is a possible breakthrough in post-combustion carbon dioxide capture process. This review first focuses on the requirements for CO2 separation membrane, and then outlines the existing competitive materials, promising preparation methods and processes to achieve desirable CO2 selectivity and permeability. A particular emphasis is addressed on polyimides, poly (ethylene oxide), mixed-matrix membrane, thermally-rearranged polymer, fixed site carrier membrane, ionic liquid membrane and electrodialysis process. The advantages and drawbacks of each of materials and methods are discussed. Research threads and methodology of CO2 separation membrane and the key issue in this area are concluded

FRACTAL ANALYSIS FOR CRYSTAL LAYER STRUCTURE AND IMPURITY DISTRIBUTION RESEARCH OF MELT CRYSTALLIZATION

Fractal analysis for crystal layer structure formation and impurity distribution of melt crystallization was conducted in this paper. The fractal dimensions were introduced to analyze the structural property of the porous crystal layer and the melt phase migration behavior. The analysis results met the experimental results with a satisfactory agreement. The introduction of fractal theory was contributed to develop novel aspect on the separation effect evaluation on melt crystallization process.