Handling of single-column interruption accidents in circulating gas systems
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The hydrogenation unit features two parallel reactors; in one of these reactors, a control valve failure caused an interruption in the circulation of hydrogen inside the reactor, which led to the shutdown of the heating furnace via interlock mechanism, while the other reactor continued to operate normally. What are the conditions in the reaction section? How is the reaction bed manifested? How to handle it?
Does a control valve failure refer to the cold hydrogen valve? Thus, the thermal balance within the reactor is disrupted, and the temperature inside the reactor rises sharply. At this point, it is necessary to activate the emergency pressure relief system to remove the heat from the reactor and prevent the catalyst from overheating.
It was not the cold hydrogen control valve that caused the problem, but rather a failure in the circulating hydrogen control valve, which led to an interruption in the circulation of hydrogen in that circuit
Could it be the anti-surge valve? Generally, for accidents of this kind, there are predefined procedures in the operating guidelines. It is recommended to study the operating procedures carefully.