Two models that can predict and simulate the performance of entrained bed coal gasifier were established by using the process simulator--Aspen Plus The models are characterized by handling solid materials directly rat...Two models that can predict and simulate the performance of entrained bed coal gasifier were established by using the process simulator--Aspen Plus The models are characterized by handling solid materials directly rather than converting them into equivalent conventional components One model uses Aspen built in RGibbs model, and the other uses a user self defined model Both models were verified by the industrial data of three typical entrained bed gasifiers--Texaco, Shell and Destec Finally, the optimal equilibrium temperature ranges of different gasifiers were analyzed and discussed The analysis showed that the optimal equilibrium temperature of slurry feed gasifiers was lower than that of dry coal feed Shell gasifier, and the results of the slurry feed type gasifiers were more sensitive to equilibrium展开更多
An apparatus for measuring coal slurry at coal liquefaction condition were made. A calculation method, power number method, which suits for this apparatus were developed. The measuring range is: Re<300, during this...An apparatus for measuring coal slurry at coal liquefaction condition were made. A calculation method, power number method, which suits for this apparatus were developed. The measuring range is: Re<300, during this range, the method works well. Glycerin was taken as a standard reagent to check the reliability of the apparatus and the power number method. The results of viscosity data of a Chinese brown coal slurry were presented using the apparatus and the power number method. The viscosity-temperature curve was obtained. It was found that the curve is suitable for Vogel equation at 300 ℃.展开更多
文摘Two models that can predict and simulate the performance of entrained bed coal gasifier were established by using the process simulator--Aspen Plus The models are characterized by handling solid materials directly rather than converting them into equivalent conventional components One model uses Aspen built in RGibbs model, and the other uses a user self defined model Both models were verified by the industrial data of three typical entrained bed gasifiers--Texaco, Shell and Destec Finally, the optimal equilibrium temperature ranges of different gasifiers were analyzed and discussed The analysis showed that the optimal equilibrium temperature of slurry feed gasifiers was lower than that of dry coal feed Shell gasifier, and the results of the slurry feed type gasifiers were more sensitive to equilibrium
文摘An apparatus for measuring coal slurry at coal liquefaction condition were made. A calculation method, power number method, which suits for this apparatus were developed. The measuring range is: Re<300, during this range, the method works well. Glycerin was taken as a standard reagent to check the reliability of the apparatus and the power number method. The results of viscosity data of a Chinese brown coal slurry were presented using the apparatus and the power number method. The viscosity-temperature curve was obtained. It was found that the curve is suitable for Vogel equation at 300 ℃.
