Papers by Author: Wu Qi Wen

Abstract: The regenerative combustion technology has been widely used in the recovery of flue gas waste heat, but the denitration is not considered. This article is based on the comprehensive application of the Selective Catalytic Reduction(SCR) technology and the regenerative combustion technology to recycling waste heat and removing NOx from flue gas. In many industrial heating processes, the temperature of flue gas falls from above 1000°C to the ambient temperature (50°C-100°C) along regenerators, while the temperature window of most catalysts ranges from 200°C to 450°C, meanwhile catalysts and regenerative cells are porous mediums, so the regenerative cells that hold a temperature range for catalytic reactions can be replaced by catalysts, and the waste heat of flue gas can be recovered and the nitrogen oxides can be removed simultaneously.

Abstract: The flow of the hydrogen has played an important role in the heat exchange in the inner bell. In this research, we have studied the volume distribution of the hydrogen in the inner bell through numerical simulation method, and we get the volume distribution law of the hydrogen when we change the axial angle and the tangential angle of the velocity of the hydrogen flowing into the inner bell while we do not change the speed of the hydrogen. This research could provide theory reference for the design and application of the structure of the coil base of the high performance hydrogen bell-type annealers later.

Abstract: The wet flue gas desulfurization is the main technology used today in China. Aimed the sintering gas desulfurization tower, Fluent software is used here to simulate the flow in the tower with different gas entrance angle and velocity, and we have got the effect of sintering gas entrance angle and velocity on the flow in the tower. The result shows: an appropriate increase of the gas entrance velocity and a downward inclined angle will be helpful for extending the residence time in the tower of the sintering gas and it will also improve the flow in the tower. This research could provide reference for the design and application of new wet flue sintering gas desulfurization tower later.

Abstract: The heating bell with burners is an important heating device for the high performance hydrogen bell-type annealers. The arrangement of the burners has an important impact on the heating effect. In this study, we simulated a series of model with different location of burners under the same quantity of burners and the same heating power. The result shows: (1) Under the same quantity of burners and the same heating power, when we increase the number of rows of burners, the maximum temperature inside the furnace could be reduced, and the temperature distribution will become more uniform; (2)When we fixed the number of the row of the burners, if we move the upper burners to higher position to make the arrangement of burners more uniform, the temperature distribution inside the furnace will be more uniform, this will be good for the heat transfer to the higher parts of the annealers, and this will accelerate the heating process, improve the efficiency of annealing, reduce fuel consumption, and extend the life of the inner bell.