Evaluation of sulfur production catalysts and hydrogenation catalysts

This post was last edited by ylb913 on 2015-7-1 19:56. Is it a trial production operation report for the device, or just an evaluation of the catalyst?

Writing based on the catalyst’s instructions and in relation to the manufacturing process: generally, manufacturers provide instructions related to the catalyst, which outline its application in various processes over time

It is probably about writing an evaluation of the catalyst’s performance. I haven’t written it before; if I were to write it, I would likely start by covering the following aspects: 1. Introduction to the catalyst: its physical properties, characteristics, bed packing conditions, and the reasons for choosing this particular catalyst, etc ； 2. Current operating status of the device ； 3. Temperature at the inlet and outlet of the reactor, temperature rise in the catalyst bed, analysis of the process gas and exhaust gas at the inlet and outlet, calculation of the conversion rate, comparison with the design values, identification of the causes of deviations, and subsequent analysis. I hope this helps you.

Thank you, it’s very helpful. I’m sorry to ask gently, but what does the bed temperature rise refer to: the difference between the inlet temperature and the highest temperature point in the bed, or the temperature difference among the upper, middle, and lower layers of the catalyst within the same reactor? If it is the temperature rise between the upper, middle, and lower layers of a catalyst in the same reactor, what are the relevant parameters? Please give me some advice.

It is the evaluation of catalyst performance at a certain stage. Thank you! !

This post was last edited by ylb913 on 2015-7-4 at 11:06. No formal evaluation reports have been issued for this; rather, after using it for one year or more and when it’s time to pay a warranty deposit to the supplier, a simple performance description is provided, consisting of just a few sentences: The sulfur production catalyst shows a temperature rise of 60 degrees or so (the difference between the highest temperature in the bed and the inlet temperature), along with a temperature increase of around ten degrees in the second stage; the overall conversion rate is about 94% or higher. In conclusion, the catalyst’s activity is normal. The performance evaluation criterion for hydrogenation catalysts is that the total sulfur content other than hydrogen sulfide at the reactor outlet should be zero, and we have not conducted such tests. ——The intuitive indication from operation is that the quench tower has never been clogged, and the consumption of ammonia solution is within normal levels; under normal circumstances, there is generally no need to add ammonia solution.

Thank you, I know where to start now.

What we usually refer to is the temperature difference between the inlet temperature and the peak temperature; this can indicate the amount of heat released during the reaction, as well as the intensity of the reaction. Some also use the temperature difference between inlet and outlet as an important parameter to reflect catalyst performance. If the temperature difference decreases, it indicates that the catalyst’s activity has decreased.

Temperature rise is an important indicator of catalyst activity; it refers to the difference between the inlet temperature and the highest temperature in the catalyst bed. The larger this difference, the better the activity. However, it’s not true that the higher the temperature rise, the better – too high a temperature rise can affect the catalyst’s service life