Patent ID: 7500658
Filing Date: 2009-03-10
Classification: B01D,B01J,C10G

Abstract:
1. A device for mixing and for distributing a gas and a liquid, arranged upstream from a granular bed ( 2 ), comprising a gas and liquid delivery means and a substantially horizontal lower plate ( 21 ), said lower plate being equipped with a plurality of risers ( 22 ) evenly distributed over the surface of said plate, each riser comprising an upper part ( 23 ) and a lower end ( 25 ) communicating with the underside of said plate, upper part ( 23 ) of risers ( 22 ) being provided with at least one lateral orifice ( 26 ), characterized in that the delivery means comprises a substantially horizontal upper plate ( 5 ) above which the gas and the liquid are supplied, said upper plate being provided with means for carrying the liquid to the lower plate and with gas separation and carrying means ( 7 ) and wherein the risers ( 22 ) extend to the upper plate ( 5 ) to support the upper plate ( 5 ) thereon and secure the upper and lower plates to one another, the upper plate ( 5 ) closing the upper ends of the risers ( 22 ) to minimize the head of liquid between the upper plate ( 5 ) and lower plate ( 21 ), whereby the gas is predominately injected into portions of the risers ( 22 ) that extend from the lower plate by entering orifices ( 26 ) in non-immersed in liquid portions of risers ( 22 ).