【Q&A Question 008】2018.01.08
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【Q&A Question 008】January 8, 2018: How to adjust the reaction feed rate in a hydrogenation unit? Adjusting the reaction feed should be carried out strictly in accordance with the principle of \"increasing the amount first and then the temperature, and decreasing the temperature first and then the amount.\" As the feed rate increases, the inlet temperature for purification should be increased appropriately. Generally, after increasing the feed rate, one should wait for a while before raising both the feed rate and the temperature; at least waiting until the previous batch of material has passed through one bed layer before proceeding further. This is mainly because, after passing through a catalyst bed, the heat generated by the reaction is released evenly, and it can be controlled by the cold hydrogen at the inlet of the next bed, thereby preventing overheating incidents. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) For management purposes, if you need to view content from a few days ago, please go through the summary post below. Summary post of daily questions for hydrogen production and hydrogenation technology in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888971Summary post of daily images for hydrogen production and hydrogenation technology in 2018: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1888970
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How to adjust the reaction feed rate in a hydrogenation unit? Answer: Adjusting the reaction feed should be carried out strictly in accordance with the principle of \"increasing the amount first before raising the temperature, and reducing the temperature first before decreasing the amount.\" As the feed rate increases, the inlet temperature for purification should be increased appropriately. Generally, after increasing the feed rate, one should wait for a while before raising both the feed rate and the temperature; at least waiting until the previous batch of material has passed through one bed layer before proceeding further. This is mainly because, after passing through a catalyst bed, the heat generated by the reaction is released evenly, and it can be controlled by the cold hydrogen at the inlet of the next bed, thereby preventing overheating incidents.
Increase the feed rate, then raise the reaction temperature
Adjusting the reaction feed should be carried out strictly in accordance with the principle of \"increasing the amount first and then the temperature, and decreasing the temperature first and then the amount.\" As the feed rate increases, the inlet temperature for purification should be increased appropriately. Generally, after increasing the feed rate, one should wait for a while before raising both the feed rate and the temperature; at least waiting until the previous batch of material has passed through one bed layer before proceeding further. This is mainly because, after passing through a catalyst bed, the heat generated by the reaction is released evenly, and it can be controlled by the cold hydrogen at the inlet of the next bed, thereby preventing overheating incidents.
Adjusting the reaction feed should be carried out strictly in accordance with the principle of \"increasing the amount first and then the temperature, and decreasing the temperature first and then the amount.\" As the feed rate increases, the inlet temperature for purification should be increased appropriately. Generally, after increasing the feed rate, one should wait for a while before raising both the feed rate and the temperature; at least waiting until the previous batch of material has passed through one bed layer before proceeding further. This is mainly because, after passing through a catalyst bed, the heat generated by the reaction is released evenly, and it can be controlled by the cold hydrogen at the inlet of the next bed, thereby preventing overheating incidents.
Adjusting the reaction feed should be carried out strictly in accordance with the principle of \"increasing the amount first and then the temperature, and decreasing the temperature first and then the amount.\" As the feed rate increases, the inlet temperature for purification should be increased appropriately. Generally, after increasing the feed rate, one should wait for a while before raising both the feed rate and the temperature; at least waiting until the previous batch of material has passed through one bed layer before proceeding further. This is mainly because, after passing through a catalyst bed, the heat generated by the reaction is released evenly, and it can be controlled by the cold hydrogen at the inlet of the next bed, thereby preventing overheating incidents.
Increase the volume first before raising the temperature; decrease the temperature first before reducing the volume
Increase the volume first, then raise the temperature； Cool down first, then reduce the amount ；
Adjusting the reaction feed should be carried out strictly in accordance with the principle of \"increasing the amount first and then the temperature, and decreasing the temperature first and then the amount.\" As the feed rate increases, the inlet temperature for purification should be increased appropriately. Generally, after increasing the feed rate, one should wait for a while before raising both the feed rate and the temperature; at least waiting until the previous batch of material has passed through one bed layer before proceeding further. This is mainly because, after passing through a catalyst bed, the heat generated by the reaction is released evenly, and it can be controlled by the cold hydrogen at the inlet of the next bed, thereby preventing overheating incidents.