Patent ID: 7276215
Filing Date: 2007-10-02
Classification: B01D,B01J,C10G

Abstract:
1. A mixing device for use in a reactor vessel of a catalytic reactor and arranged in the reactor vessel between an upper catalyst bed and a lower catalyst bed for admixing vapor and liquid flowing concurrently inside the reactor vessel through the catalyst beds, the mixing device comprising: a substantially horizontal flow path defined between an inlet and an outlet; a flow dividing structure disposed in the flow path so as to divide a combined flow of vapor and liquid through the flow path into first and second two-phase flow streams of vapor and liquid; and at least first and second mixing orifices, the first mixing orifice disposed in the flow path upstream from the flow dividing structure, and the second mixing orifice disposed in the flow path downstream from the flow dividing structure so as to recombine the first and second flow streams, the first and second mixing orifices being arranged and configured so that substantially the entire combined flow of liquid and vapor is constrained to flow through each of the first and second mixing orifices, wherein each of the first and second mixing orifices has a flow-through area relative to the flow rate of the combined flow such that the no-slip two-phase flow velocity of the combined flow in each of the first and second mixing orifices during at least one operational phase of the reactor is sufficient for the liquid to be dispersed into the vapor and/or the vapor to be dispersed into the liquid.