Catalyst issue?

This question is too broad to be generalized. Normally, however, the size of the reactor is determined by the amount of catalyst used, and the amount of catalyst used is determined by the space velocity. The air velocity is determined by the catalyst. Air velocity is the most important parameter for catalysts. The catalyst amount is determined based on the treatment gas flow rate/spatial velocity. The reactor volume is then determined based on the amount of catalyst used along with other considerations. The cross-section of the reactor is determined by the empty tower gas velocity. The gas velocity in an empty tower is also related to many factors, especially the pressure drop. It’s difficult to explain simply, as after studying chemical engineering for four, seven, or ten years, the main focus is on solving problems related to reactor design.

This post was last edited by *amingteda on 2019-2-13 at 16:06. Roughly speaking, based on the reaction characteristics, the catalyst loading is determined using the desired output and the space-time yield of the experiment; then, the reactor diameter and number of tubes are determined using factors such as the catalyst loading and heat release characteristics. Finally, the tube length is determined. This isn’t something that can be settled in one go – it requires repeated trials and adjustments based on experiments. Strictly speaking, the catalyst loading required to achieve the desired production capacity should be determined by combining the reactor model with reaction kinetics. The space velocity is determined by catalytic activity and is usually established through experiments. There is often a conflict between equal void velocity amplification and equal linear velocity amplification; the former ensures reactivity, while the latter ensures heat transfer capacity and pressure drop, and a comprehensive balance should be considered during amplification.

This question is not professionally asked. Let me explain: the inner diameter of the reactor is determined based on the blueprints, but there can still be some errors. Ultimately, it is the catalyst loading personnel who go in to measure the hole height and inner diameter to determine the error. The error is generally on the order of millimeters. Another factor is the amount of catalyst used; this is determined by the design institute based on your processing capacity and the yield of the product, with the catalyst manufacturer providing relevant data. Then, the catalyst loading company loads it in tons, one ton at a time; after each two packs, the loading density is checked to see if there are any discrepancies from the design values, and the error is corrected for the next pack. Generally, a dense-phase filler is used for control

This needs to be determined based on specific circumstances. The space velocity is determined by the catalyst, and the catalyst also involves cross-sectional flow velocity and residence time. The amount of catalyst to be used is determined based on the space velocity, while the range of flow area is determined based on the cross-sectional flow velocity. Once these are known, the loading height can be determined, and the residence time can be calculated accordingly. If there is exothermic or endothermic reaction, the heat transfer area must also be calculated based on the heat generated. In short, this is not a simple calculation.

It is a backward calculation process: the type and model of the catalyst are determined based on the designed capacity and production safety; then, the space velocity and space-time yield are determined using the catalyst model along with the designed capacity. Subsequently, the packing density and amount of catalyst to be used are determined based on these values. Finally, the material properties of the reactor and its size are determined by taking into account the amount of catalyst used and the characteristics of the medium – that’s roughly how the calculations are carried out