The function of the conical internal mesh in UOP continuous reforming regenerators
Thread Content
What is the purpose of the conical internal mesh in UOP continuous reforming regenerators?
The interior of the regenerator features a two-layer Johnson screen structure, with the inner layer having an inverted trapezoidal shape. Its main purposes are: first, to prevent charring at the top of the bed due to oxygen content limitations, thereby reducing the residence time of the unreacted catalyst in the high-temperature, high-water, low-oxygen charring zone and helping to minimize losses in the catalyst’s specific surface area. Secondly, the charring in the lower bed layer is restricted by oxygen diffusion; increasing the catalyst residence time in this area ensures that complete charring occurs before the catalyst enters the chlorination zone.