The Selection of Geometry and Flow Rate on the Fluidized Bed Reactor for Coating Particle

Abstract

The "Reaktor Daya Eksperimental" has been designated to be built in Indonesia and the selected type of this reaktor is a high-temperature gas-cooled reactor. The fuel system used in this reactor is pebble bed fuel. The process of coating the sintered kernel into coated particles, is one of the processes in the manufacture of gas cooled high temperature reactor fuels. The geometry of the fluidization reactor determines the level of contact between the kernel and the filling gas. The flow rate of the fluidizing gas also affects fluidization at the rate at which stable fluidization occurs. Both of the above thing are an important role in the success of the coating process. Based on data and information from previous researcheres, designed a tool for coating process. The design of the sintered UO2 kernel coating reactor into coated particles is carried out based on the coating process data, the purpose of the reactor making and the selection of its capacity. The reactor prototype is used to obtain useful process data for the manufacture of a production reactor. The type of fluidization reactor made by the prototype is a conical spout bed reactor or conical reactor. The fluidization reactor prototype was chosen to have a 2 cm diameter cylinder, 0.3 cm inlet diameter, and 60° conical angle. The flow rate for the reactor operation is between the maximum fluidization flow rate at the inlet and the minimum fluidization velocity on the cylinder. The gas stream acording to the calculation above 2.5279 m/sec at the inlet pipe or 1.0716 L/min. up to the flow 1.38 m/s or 26.1255 L/men. Comparison of other research results with modeling using CFD, its flow rate is about 10 m/s or 4.239 L/min.