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A method is developed for analysis of the processes in the tuyere zone. Analysis permits calculation of the change in the yield, composition, and temperature of the intermediate gas at the axis of the tuyere zone and determination of the final composition of the hot reducing gases at the output from this zone. The quantitative ratios of the residual oxygen ΔO2 and the oxidized gases CO2 and H2O along...
To study the best mixing locations of the gas and the air in such a narrow space within the width of the rotary furnace, this dissertation designs four programs to simulate the regenerative combustion process. By analyzing the simulation results of those four programs, it is found that the furnace reaches the best efficiency if the mixing point locates at 40% to 50% of the furnace-wide. Experimental...
The aim of this paper is to study SO2 adsorption by the activated carbon (AC) in the circulating fluidized bed reactor. Five different kinds of activated carbons were chosen to determine whether activated carbon could be used effectively to remove SO2 from coal combustion flue gas. The fluidized bed reactor was used to study the capability of AC in SO2 removal with concentrations of SO2 (1000 ppm),...
An experimental study on gasification of coal using high temperature air as a gasifying agent was performed in a 200 mm inside diameter fixed-bed gasifier. Effects of gasification parameters such as, excess air factor (??), the ratio steam to carbon (ns/nc) and temperature of gasifying agent on gasification performance were studied. The results showed that the effects of ?? and the ns/nc on coal gasification...
A kinetics model and a experimental rig for high temperature air coal gasification(HTAG) research were set up. The effects of important operation parameters, such as air-coal ratio, steam-coal ratio and specific gasification rate, on gasification indexes were studied through the kinetics model and gasifier. The results show that: the model can accurately predict the gas composition. And when air-coal...
The TG-DTA-DTG thermal analysis technology was applied to study on combustion experiments of cornstalk and wheat straw.. Combustion characteristics of the two biomass was analyzed according to combustion characteristics parameters such as ignition temperature ,peak temperature at maximum weight loss rate, burnout temperature etc. By analyzed the combustion process of the two with the heating rate...
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