Patent ID: 7378065
Filing Date: 2008-05-27
Classification: B01J,F28D,F28F

Abstract:
1. A pseudo-isothermal reactor of the axial or radial type comprising a substantially cylindrical shell closed at the opposite ends by base plates, a reaction zone containing a catalytic bed, and at least one heat exchange unit immersed in said catalytic bed, the heat exchange unit comprising: at least one flattened box-shape heat exchanger formed from a pair of juxtaposed metallic plates, spaced apart and joined around at their edges, defining an inner chamber intended for being crossed, along a predetermined direction, by an operating heat exchange fluid, wherein said inner chamber has a variable size increasing or decreasing in the predetermined direction, and wherein said chamber has at least two successive zones defined along the direction of the fluid, having different widths, in fluid communication with each other, the width within each successive zone being constant.