Practical Exercise on Purification Technology Version [038]
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What precautions should be taken regarding transformations in production operations? Answer: Mainly: 1) It is necessary to fully utilize the catalyst’s low-temperature activity; in practical operations, the key is to maintain a stable furnace temperature. 2) During load addition and reduction in the production process, it is necessary to adjust and control the inlet temperature of the shift converter, the hot spot temperature, and the CO content in the gas exiting the shift conversion stage to keep them within the specified limits. Coalification Region Purification Technology Edition – 2017 Coal Chemical Industry “My Technical Upgrades” Contest (Large prizes available) http://bbs.hcbbs.com/thread-1786290-1-1.html Registration for Chemical Engineers – Experience Sharing Event “Learning from Others’ Experiences” http://bbs.hcbbs.com/thread-1808158-1-1.html
1) To fully utilize the low-temperature activity of the catalyst, it is crucial in practical operations to stabilize the furnace temperature and control the gas-to-vapor ratio properly. 2) In case of a sudden reduction in production volume, reduce or cut off the steam supply promptly. 3) For temporary parking, close the steam valve first. 4) For planned shutdown, the steam supply can be appropriately reduced before shutting down; after that, the inlet and outlet valves of the converter should be closed, and the system should be maintained at its current pressure. 5) It is prohibited to address abnormal conditions during operation by increasing the steam supply.
1) To fully utilize the low-temperature activity of the catalyst, it is crucial in practical operations to stabilize the furnace temperature and control the gas-to-vapor ratio properly. 2) In case of a sudden reduction in production volume, reduce or cut off the steam supply promptly. 3) For temporary parking, close the steam valve first. 4) For planned shutdown, the steam supply can be appropriately reduced before shutting down; after that, the inlet and outlet valves of the converter should be closed, and the system should be maintained at its current pressure. 5) It is prohibited to address abnormal conditions during operation by increasing the steam supply.
[wiki] The key points to keep in mind when carrying out transformations in production relate mainly to catalysts; that is, the precautions related to catalysts. Of course, there are other general considerations as well. Regarding catalysts, the main things to note are: 1) they must not be submerged in water, 2) the temperature must not exceed safe limits, and 3) they must not be turned on and off frequently, as well as avoiding sudden changes in pressure
Mainly: 1) It is necessary to fully utilize the catalyst’s low-temperature activity; in practical operations, the key is to maintain a stable furnace temperature. 2) During load addition and reduction in the production process, it is necessary to adjust and control the inlet temperature of the shift converter, the hot spot temperature, and the CO content in the gas exiting the shift conversion stage to keep them within the specified limits.
1) To fully utilize the low-temperature activity of the catalyst, it is crucial in practical operations to stabilize the furnace temperature and control the gas-to-vapor ratio properly. 2) In case of a sudden reduction in production volume, reduce or cut off the steam supply promptly. 3) For temporary parking, close the steam valve first. 4) For planned shutdown, the steam supply can be appropriately reduced before shutting down; after that, the inlet and outlet valves of the converter should be closed, and the system should be maintained at its current pressure. 5) It is prohibited to address abnormal conditions during operation by increasing the steam supply.
1) To fully utilize the low-temperature activity of the catalyst, the key in practical operation is to stabilize the furnace temperature. 2) During load addition and reduction in the production process, it is necessary to adjust and control the inlet temperature of the shift converter, the hot spot temperature, and the CO content in the gas exiting the shift conversion stage to keep them within the specified limits.
The last edit to this post was made by 402122290 on 2017-8-17 at 15:36. To fully utilize the low-temperature activity of catalysts, it is crucial to maintain a stable furnace temperature in practical operations. 2 During load addition and reduction in the production process, it is necessary to adjust and control the inlet temperature of the shift converter, the hot spot temperature, and the CO content in the gas exiting the shift conversion stage to keep them within the specified limits.
This post was last edited by ceybwang on 2017-8-17 at 15:48. 1) To fully utilize the low-temperature activity of catalysts, it is crucial to maintain a stable furnace temperature in practical operations. 2) During load addition and reduction in the production process, it is necessary to adjust and control the inlet temperature of the shift converter, the hot spot temperature, and the CO content in the gas exiting the shift conversion stage to keep them within the specified limits.
1) To fully utilize the low-temperature activity of the catalyst, the key in practical operation is to stabilize the furnace temperature. 2) During load addition and reduction in the production process, it is necessary to adjust and control the inlet temperature of the shift converter, the hot spot temperature, and the CO content in the gas exiting the shift conversion stage to keep them within the specified limits.
1) To fully utilize the low-temperature activity of the catalyst, it is crucial in practical operations to stabilize the furnace temperature and control the gas-to-vapor ratio properly. 2) In case of a sudden reduction in production volume, reduce or cut off the steam supply promptly. 3) For planned shutdown, the steam supply can be appropriately reduced before shutdown; after shutdown, the inlet and outlet valves of the converter should be closed, and the system pressure should be maintained at its current level.