In order to predict and improve the performance of natural gas/diesel dual fuel engine (DFE), a combustion rate model based on forward neural network was built to study the combustion process of the DFE. The effect ...In order to predict and improve the performance of natural gas/diesel dual fuel engine (DFE), a combustion rate model based on forward neural network was built to study the combustion process of the DFE. The effect of the operatin g parameters on combustion rate was also studied by means of this model. The stu dy showed that the predicted results were good agreement with the experimental d a ta. It was proved that the developed combustion rate model could be used to succ essfully predict and optimize the combustion process of dual fuel engine.展开更多
CuO-Fe2O3 composite material with strongmagnetism and a large surface area is prepared by the co-precipitate method. Its adsorption properties towards Acid Red B (ARB) and the regeneration by catalytic com-bustion of ...CuO-Fe2O3 composite material with strongmagnetism and a large surface area is prepared by the co-precipitate method. Its adsorption properties towards Acid Red B (ARB) and the regeneration by catalytic com-bustion of organic compounds have been studied. The results show that the prepared CuO-Fe2O3 composite is an excellent adsorbent for ARB adsorption at acid condition. The pres-ence of Cl- has no effect on ARB adsorption. But the 24SO-can inhibit ARB adsorption. After being recovered by the magnetic separation method, the adsorbent can be regener-ated by catalytic oxidation of absorbate at 300℃ in air at-mosphere. The combustion reactions of ARB in the presence or absence of CuO-Fe2O3 are studied by in situ diffuse reflec-tion FTIR. The results indicate that, in the presence ofCuO-Fe2O3, the degradation temperature is significantlylowered by the catalysis of CuO-Fe2O3, and ARB can be oxi-dized completely without volatile organic compound by-product; in comparison, in the absence of CuO-Fe2O3, the temperature needed for oxidation of ARB is higher and the reaction is incomplete with some N-containing harmfulcompounds produced. The reusability of CuO-Fe2O3 is also studied in successive seven adsorption-regeneration cycles.展开更多
文摘In order to predict and improve the performance of natural gas/diesel dual fuel engine (DFE), a combustion rate model based on forward neural network was built to study the combustion process of the DFE. The effect of the operatin g parameters on combustion rate was also studied by means of this model. The stu dy showed that the predicted results were good agreement with the experimental d a ta. It was proved that the developed combustion rate model could be used to succ essfully predict and optimize the combustion process of dual fuel engine.
基金supported by the National Science Fund for Distinguished Young Scholars(Grant No.50225824)the Knowledge Innovation Project of the Chinese Academy of Sciences(Grant No.KZCX2-409).
文摘CuO-Fe2O3 composite material with strongmagnetism and a large surface area is prepared by the co-precipitate method. Its adsorption properties towards Acid Red B (ARB) and the regeneration by catalytic com-bustion of organic compounds have been studied. The results show that the prepared CuO-Fe2O3 composite is an excellent adsorbent for ARB adsorption at acid condition. The pres-ence of Cl- has no effect on ARB adsorption. But the 24SO-can inhibit ARB adsorption. After being recovered by the magnetic separation method, the adsorbent can be regener-ated by catalytic oxidation of absorbate at 300℃ in air at-mosphere. The combustion reactions of ARB in the presence or absence of CuO-Fe2O3 are studied by in situ diffuse reflec-tion FTIR. The results indicate that, in the presence ofCuO-Fe2O3, the degradation temperature is significantlylowered by the catalysis of CuO-Fe2O3, and ARB can be oxi-dized completely without volatile organic compound by-product; in comparison, in the absence of CuO-Fe2O3, the temperature needed for oxidation of ARB is higher and the reaction is incomplete with some N-containing harmfulcompounds produced. The reusability of CuO-Fe2O3 is also studied in successive seven adsorption-regeneration cycles.
