Why can’t the O2 level be too high during sulfur removal?
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Why can’t the O2 level be too high during sulfur removal?
The sulfur blowing process involves using gas wind or process gas, primarily SO2, to purge the system of sulfur. If the oxygen level is too high, oxygen reacts with sulfur at high temperatures, releasing heat that can cause the reactor to overheat. Therefore, it is necessary to control its oxygen content to prevent the reactor from overheating and the catalyst from being damaged. Its oxygen content can be gradually increased by controlling the air supply.
In fact, it is to prevent fires in the rear area and within the bed layer from damaging the equipment and catalysts. Generally, the oxygen content should be kept between 2-6%; increase it as the bed temperature rises!
The heat release causes the reactor to overheat, leading to catalyst degradation and equipment damage
It is mainly to protect the catalyst. . . . . . . . . . . . . .
Agree with the poster on the second floor! However, this oxygen content is difficult to control, as it is affected by the pressure, flow rate, and composition of the gas.