Several issues that arose during the startup of the hydrogenation unit
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Gentlemen, during the catalyst drying process in the hydrogenation unit, after reaching a constant temperature, dehydration, water removal, weighing, and recording are carried out. Water samples are taken at the same time to analyze the content of impurities in them. What is the main purpose of analyzing the C and N contents? During the catalyst drying phase, it is necessary to strictly control the reactor bed temperature so that it does not exceed 170°C. During the nitrogen circulation cooling phase, the maximum temperature of the bed must be kept below 140°C. I would like to ask: what factors are primarily taken into account when controlling these two temperatures?
One more question: why is it that the highest temperature point in the catalyst bed should not exceed 80°C before introducing hydrogen gas into the system?
Do catalysts still need to be dried now? The technology is really outdated.
I haven’t heard that the C and N contents of the condensate need to be analyzed during the drying period. During the cooling process, it is required that the bed temperature remain below 140°C, as this is to prepare for the subsequent pressure increase; it represents the minimum pressure increase level required by the equipment manufacturer.
I haven’t heard that the C and N contents of the condensate need to be analyzed during the drying period. Linqing equipment: hydrogen embrittlement, intergranular corrosion, drying issues: there is moisture in the air
It should be related to the structure of the catalyst.