Hydrorefining: Why must the temperature in the cold high-pressure section be so strict?
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Hydrorefining: Why must the temperature in the cold high-pressure section be so strict? I once had an on-site exam; we were a group of newcomers, and the supervisor asked how to handle a problem with the water cooling system before reaching high temperatures (there was a cross-connected wire). The correct approach is to first lower the temperature at which water enters the system, before removing it via water cooling. At that time, someone replied that the system should be shut down first before cooling down, which led to severe criticism from the manager. At that time, when recording the process cards, I didn’t pay much attention to this high temperature either. Why is the control of such high temperatures so strict?
Reply to 1# MiaoMiaoYue: It depends on what the temperature of the reaction products from the water cooling is If the temperature remains around 60 degrees, there is no major issue, but it is essential to closely monitor the liquid level in the liquid separation tank at the inlet of the circulation pump to ensure it does not get too high ； If the temperature is above 70 degrees, it must be cooled down first to prevent the circulating hydrogen containing oil from damaging the circulation pump ； When it is necessary to disconnect the water cooling system due to a problem, it is best to first lower the temperature before doing so, in order to ensure that the circulating hydrogen does not contain liquid and thus avoid damaging the circulation pump. If the circulating hydrogen contains a significant amount of liquid, this can easily lead to fluid shock damage to the pump, resulting in serious equipment failures
This post was last edited by linweihua6 on 2011-9-15 08:03. When the temperature is high, the hydrogen circulation pump carries liquid with it, which increases hydrogen loss. Compressors are designed to compress gas only and cannot handle liquid; the presence of liquid in the circulating hydrogen can cause liquid hammer damage to the pump, leading to serious equipment failures
Excessively high high-temperature conditions can easily cause liquid to be carried in the cycle hydrogen, which in turn leads to equipment failures when it enters the circulation machine
The solubility of hydrogen in oil is proportional to temperature; excessively high temperatures can cause the circulating hydrogen to contain liquid, which upon entering the compressor can lead to equipment damage and disrupt production