Optimization And Analysis Of Inner Part Stability For The Methanol Synthesis Reactor

Bi-direction cooling-tube reactor for uniform temperature methanol reactor in Juhua Ammonia Factory was widely used in the small or moderate scaled reactors. For the spin of inner part in the reactor during producing, it was considered that the spin occurred mostly by reason of the moment of force on the side of the spiral heat exchanger and the change of angular momentum caused by the change of fluid's flow in the spiral passage, according to the analysis of angular momentum and effect of force on the inner part.The spiral structure of heat exchanger was described as Archimedean spiral. The relation between the angular momentum and the flow of fluid in the spiral passage of this structure in the situation steadily was found. The model for force and spin of the reactor inner part was established based on angular momentum. The non-spin condition of inner part was obtained. The spin distance of the structure and the force needed to fix it were calculated quantitatively following the functions built above.The Effect of gas transiet flow in the annular between the inner part and the tower on the internals was studied when the friction force of internals was considered. The model of fluid transient flow in the annular was found, and the force effecting on the internals was calculated under some conditions. The preventive measure preventing spin was proposed.The mathmatics model of catalyst bed, a steady-state simulation process was built for its importance in the operation by using process simulator software -Aspen Plus.