Packed bed reactors are reactor vessels containing a fixed bed of catalytic material, they are widely used in the chemical process industry and find primary use in heterogeneous, gas-phase, catalytic reactions.

Packed bed reactors consist of a cylindrical shell with convex heads. Most are vertical and allow reactants to flow by gravity. Inside the reactor is an immobilized, or fixed, bed of catalyst.

Here are some links to example problems dealing with packed bed reactors. You could also use these problems as self tests. 1. Gas-solid. 2. Gas-solid catalyzed. 1. Heterogeneous has phase reactions with a catalyst. 1. Good mixing. 2. Good uniformity of temperature. 3. Catalyst can be continuously regenerated with the use of an auxiliary loop.

2014年8月15日 · Packed bed reactors are one of the most common reactors used in the chemical industry due to their high conversion rate per catalyst weight compared to other catalytic reactors.

fluidizing a bed of catalytic particles so that intimate contact can be achieved between the particles and the fluid. Nowadays, you will find fluidized beds used in catalyst regeneration, solid-gas reactors, combustion of coal, roasting of ores, drying, and gas adsorption operations.

A packed bed reactor is a continuous heterogeneous reactor where the gas or liquid phase flows in a plug flow manner, while the solids are treated as batch and contain catalyst beds that gradually lose activity over time.

2001年4月1日 · The engineering design of packed bed based unit operations is very much influenced by the structure of the packing matrix, which in turn is governed by the shape, dimensions and the loading of the constituent particles.

A fixed packed bed reactor consists of a compact, immobile stack of catalyst pellets within a generally vertical vessel. On macroscopic scales the catalyst bed behaves as a porous media.

Developed by licensors of technologies that use them and involves incorporation of staged adiabatic reactors with inter-stage reactant or inert cold shot cooling as well as cooling of the recycle streams. Designs are available for pancake, panel and radial flow reactors to …

Reactor scale effect via contacting pattern and phase RTD influence on the average rate and via flow regime effect on phase holdups and inter-phase transport coefficients.