Gasoline hydrogenation catalyst bed temperature
Thread Content
After the shutdown of gasoline hydrogenation, the hot hydrogen carrying oil ceased to flow, and the temperature dropped below 40 degrees while the pressure was at 4 kilograms; nitrogen was then used for purging, with nitrogen being injected at the compressor inlet – in other words, purging took place in the reverse direction through the bed. After 8 hours, the temperature in the bottom layer of the reactor began to rise, reaching a maximum of 180 degrees, before gradually spreading to the middle layers. Only after switching to injecting gas at the compressor outlet did the temperature drop. Please analyze what could be the reason for this Is it due to the purity of nitrogen? Is it still a normal phenomenon?
Is the nitrogen used at the front and back supplied from the same main nitrogen pipeline?
Then the oxygen content factor can probably be ignored; at such a low temperature, it’s unlikely that any reactions will occur. Let those more knowledgeable people provide an answer
Conduct an analysis of the nitrogen purity, and see if the temperature will continue to rise if the supply of nitrogen is stopped
It’s basically due to oxygen, I guess