Q&A on Purification Technology Version [017]
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What are the principles for increasing or decreasing the load in a conversion system? Answer: The main principle is: 1) When increasing the load, it should be done gradually, depending on the temperature of the catalyst bed. 2) When the load is reduced due to other processes, it is necessary to adjust the inlet temperature of the shift converter, the hot spot temperature, and the CO content at the exit of the shift conversion process in a timely manner ； When reducing the load due to issues with the conversion process itself, it is necessary to contact the dispatch team promptly, while also adjusting the inlet temperature of the converter, the hot spot temperature, and the CO content at the output of the conversion process.
① When increasing the load, follow the principle of small amounts multiple times, depending on the temperature of the catalyst bed. ② Load reduction in a unit is usually carried out in the event of failures in the upstream and downstream units, or due to a decline in the activity of its own catalyst; the latter situation can affect both the upstream and downstream units. Therefore, load reduction must be coordinated with the upstream and downstream processes.
Add air first and then ammonia, or reduce air first and then ammonia
Increase the load in small amounts multiple times depending on the temperature; reduce the load gradually. Ensure good coordination between the various stages involved
① When increasing the load, follow the principle of small amounts multiple times, depending on the temperature of the catalyst bed. 3 y/ x& y S. N. P$ z ② When reducing the load on a processing unit, this is usually done in case of failures in the units before or after it; it can also be done when the activity of the catalyst itself declines. The latter situation can affect the units before and after it as well. Therefore, load reduction must be coordinated with the upstream and downstream processes. :
1) When increasing the load, depending on the temperature of the catalyst bed, the increase should not be too rapid. 2) When the load is reduced due to other processes, it is necessary to adjust the inlet temperature of the shift converter, the hot spot temperature, and the CO content at the exit of the shift conversion process in a timely manner ； When reducing the load due to issues with the conversion process itself, it is necessary to contact the dispatch team promptly, while also adjusting the inlet temperature of the converter, the hot spot temperature, and the CO content at the output of the conversion process.
1. When increasing the load, follow the principle of adding a small amount multiple times, depending on the temperature of the catalyst bed. 2. Load reduction in a unit is usually carried out in the event of failures in the upstream or downstream units, or it may also occur due to a decline in the activity of the catalyst itself; the latter situation can affect both the upstream and downstream units. Therefore, load reduction must be coordinated with the upstream and downstream processes
① When increasing the load, follow the principle of small amounts multiple times, depending on the temperature of the catalyst bed. ② Load reduction in a unit is usually carried out in the event of failures in the upstream and downstream units, or due to a decline in the activity of its own catalyst; the latter situation can affect both the upstream and downstream units. Therefore, load reduction must be coordinated with the upstream and downstream processes.
① When increasing the load, follow the principle of small amounts multiple times, depending on the temperature of the catalyst bed. ② Load reduction in a unit is usually carried out in the event of failures in the upstream and downstream units, or due to a decline in the activity of its own catalyst; the latter situation can affect both the upstream and downstream units. Therefore, load reduction must be coordinated with the upstream and downstream processes.
1. When increasing the load, follow the principle of adding a small amount multiple times, depending on the temperature of the catalyst bed. 2. Load reduction in a section is usually carried out in the event of failures in the sections before or after it, and it can also occur due to a decline in the activity of the catalyst itself; the latter situation can affect the sections before and after it as well. Load reduction must be coordinated with the upstream and downstream processes
This post was last edited by tuzi1q on 2017-7-26 at 14:07. ① When increasing the load, follow the principle of adding a small amount multiple times, depending on the temperature of the catalyst bed. ② Load reduction in a unit is usually carried out in the event of failures in the upstream and downstream units, or due to a decline in the activity of its own catalyst; the latter situation can affect both the upstream and downstream units. Therefore, load reduction must be coordinated with the upstream and downstream processes.