How is the cold hydrogen to be supplied to the hydrogenation reactor determined?
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Dear marine enthusiasts, how is the amount of cold hydrogen to be added to the hydrogenation reactor determined? I hope you will kindly offer your guidance
Determine the amount of cold hydrogen based on the reaction temperature!
Follow the optimal temperature settings for each bed layer provided by the catalyst manufacturer. Based on your temperature requirements~~~
The inlet temperatures for each bed are adjusted according to the specifications provided by the catalyst manufacturer or design institute. Generally, for the same reactor and the same type of catalyst, the inlet temperatures for various beds do not differ significantly, in order to prevent too large variations in the catalyst’s deactivation rate
①Changes in bed temperature rise； ②Changes in the total flow rate of recycled hydrogen and the load on the recycled hydrogen compressor ； ③Changes in the new hydrogen flow rate ； ④Changes in inlet flow rates of the refining reactor and the cracking reactor ； ⑤Change in the amount of cold hydrogen at a certain point.
What is the amount of supplementary cold hydrogen? You mean the amount of cold hydrogen, right? Generally, it is determined by the temperature rise; each bed layer in the reactor has a designated temperature rise and corresponding parameters
The bed temperature is within the controllable range; it is no longer rising
It mainly relies on the bed temperature; the amount of cold hydrogen is controlled to remain within the specified range based on that temperature
1. Adjust the bed temperature based on the product’s boiling range to determine the degree of reaction. 2. Determine the SN removal rate by considering the SN content in the refined oil. 3. According to the data provided by the catalyst manufacturer, the activity is higher at lower temperatures at the beginning of operation; as the catalyst gradually loses its activity, the temperature needs to be increased over time. 4. Control the opening degree of the cold hydrogen valve at no more than 50% – it should not be too high or too low
The temperature set by the catalyst, along with the sulfur and nitrogen content of the raw materials fed into the system, mean that without appropriate pressure reduction and coking facilities, a hydrogenation unit that has to purchase raw materials on its own operates under significant constraints