Catalyst operating temperature

Let me talk about the use of our hydrocracking catalysts! The final reaction temperature of 427°C is determined by the requirements of the molecular sieve catalyst, and it is mainly related to the performance of the catalyst used. Catalysts such as HC-14 and HC-16 have low starting reaction temperatures and good selectivity; however, as they age over time, significant changes occur in the product distribution towards the end of the reaction, with increases in the yields of gas and light naphtha. It becomes unsuitable to raise the reaction temperature any further. Therefore, the final temperature of the reaction system is generally set at 427°C during design. However, for high-nitrogen feed oils, due to the large amount of ammonia generated, the set value for the maximum reaction temperature should also be higher; some plants choose 450°C. It should be noted that since the new HC-14 and HC-16 catalysts are suppressed with ammonia from the beginning, and the reaction temperature is raised to 427°C, the product distribution can still maintain a selectivity similar to that at lower starting temperatures. Clearly, the selectivity of the catalyst is closely related to the amount of carbon deposition, while the reaction temperature has little impact.

The operating temperatures for different catalysts vary!

Take a look at this book on industrial catalysis: http://bbs.hcbbs.com/viewthread.php?tid=386188&highlight=%B9%A4%D2%B5%B4%DF%BB%AF

The operating temperatures vary for different types of catalysts, different properties of catalysts, and even among manufacturers!

There are many types of catalysts in the chemical industry. I’m not sure which one; if it’s the catalyst for the catalytic cracking unit, I can help.

The operating temperatures for different catalysts vary! Analyze specific problems specifically

It is the shift catalyst used in the synthetic ammonia shift unit for the low-medium-low process. Thank you

en Different types are different