<報文>非等温固定層による非触媒反応操作のシミュレーション

概要

論文の詳細を見る
A mathematical model for nonisothermal fixed bed which consisted of four simultaneous partial differential equations was developed. The expression for the reaction rate included in this model was based on the unreacted core model and the rate parameters were determined by using the actual rate measured for single particle. Fundamental partial differential equations were numerically solved by means of the digital computer (NEAC series 2200 model 500 and 700 in Tohoku University), according to the method of characteristics. The process simulation of the fixed bed for the reduction of iron oxide pellets by H_2 was made by using this model and changes in fractional reduction, concentration of gas and temperatures of gas and solid particles were computed with the lapse of time at various levels in the bed. Regarding the behavior of the fixed bed, the following were estimated quantitatively by this model : An increase in height of the bed increased the influence of temperature distributions of gas and solid particles on the fractional reduction. Minimum temperatures of gas and solid particles were found in the course of the reduction at any level in the bed. An increase in the overall heat transfer coefficient through the wall led to the rise in these minimum temperatures and varied the pattern of the temperature change. Longitudinal distributions of temperatures for gas and solid particles had also the respective minimum value and the levels of the minimum temperatures moved upwards in the bed with the lapse of time.
東北大学の論文
1972-03-25

<報文>非等温固定層による非触媒反応操作のシミュレーション

スポンサーリンク

概要

著者

関連論文

スポンサーリンク