What are the consequences of an excessively high pressure difference between the inlet and outlet of the hydrorefining reactor?
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Please discuss: What effects can an excessively high pressure difference between the inlet and outlet of the hydrorefining reactor have? Are there any feasible online processing solutions?
The pressure difference between the inlet and outlet of the hydrorefining reactor is too high; it’s likely that the catalyst bed is clogged.
It shouldn’t be said that there is some impact; it should be said what the reason is. As mentioned above, the most common situation is that the catalyst is clogged or damaged, and the filling condition is disrupted, which leads to high resistance; there may also be leaks
If the instrument isn’t the problem, then just turn your head away
It affects the strength of the catalyst as well as the internal components of the equipment; too large a pressure difference can easily cause those internal components to break. . . This can be achieved by reducing the processing volume. . . If it is caused by coking, then shut down the operation for coking
Just turn your head. It was done just last year, and the inlet filter became clogged. The internal components are not affected; however, a large pressure difference causes more severe damage to the catalyst, and it also affects temperature changes as well as the regulation of the amount of cold hydrogen – there are many aspects involved.
Analyze the properties of your feedstock; if the levels of olefins, gums, and asphaltenes are too high, it will cause carbon deposition on the catalyst. Many impurities in the raw materials can cause blockage at the reactor inlet. Excessive pressure differences can damage the mechanical strength of the catalyst and the internal components, causing the compressor and feed pump to operate under high load; in severe cases, this can lead to equipment vibration and leaks.
An increase in the pressure difference at the inlet and outlet can cause severe damage to the internal components of the reactor over time. In particular, the beams inside the reactor may bend and deform, making it difficult to address such issues later on. Moreover, an increased pressure difference makes it harder to penetrate the reactor bed layer, resulting in a significant increase in energy consumption, such as for steam. So it’s better to resolve this as soon as possible. An increase in the pressure difference across the reactor does not affect production, but it is necessary to reduce the output level; high-volume production is not possible.
Our company is facing the same issue; currently, the pressure drop is concentrated in the last refining bed. The catalyst was just replaced, and after more than two months of operation, there are no high points or flow imbalances in this bed. We hope that experts can help analyze this situation
Is it possible that the impurities at the reactor inlet are causing a blockage, and adding an additive at the inlet could dissolve these impurities?； Then the voltage drop difference decreases ；
An excessively high pressure difference increases the load on the components inside the reactor, and it also causes a continuous decrease in the flow rate of circulating hydrogen; in severe cases, this can lead to surging in the circulating hydrogen compressor, forcing the plant to shut down for maintenance. If it is possible to operate at a reduced load in the early stage by lowering the production volume, this can be done, but energy consumption will increase and economic efficiency will be affected.