What is the basis for determining the deactivation of zinc oxide desulfurization agents?
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What is the basis for determining the deactivation of zinc oxide desulfurization agents?
By analyzing the sulfur content in the output, if it exceeds the limit, it is generally determined that the sulfur capacity is at saturation.
Reply to 2# Pony: It’s not entirely the case! Excessive sulfur content in exports can be caused by many different reasons!
In addition to analyzing the sulfur content in imports and exports, calculations are generally also required based on the sulfur content of the feed gas. When the sulfur capacity of the zinc oxide reaches a certain percentage due to the absorbed sulfur, it must be replaced.
The criterion for determining deactivation is that the sulfur content in the gas exiting the desulfurization tank is greater than or equal to that in the inlet gas, which means that the zinc oxide in the desulfurization tank has reached saturation. But usually, it is already difficult to meet production demands before saturation is reached.
Under certain conditions such as temperature, space velocity, and zinc oxide particle size, when sulfur-containing gases pass through zinc oxide, if the concentration of sulfides at the outlet exceeds a certain value, it indicates that the zinc oxide is saturated.
Under normal production conditions, if the temperature is increased and the hydrogen sulfide level still exceeds the limit, it indicates that the catalyst has essentially become inactive.
The hydrogen sulfide content in the exhaust exceeds the limit, and the sulfur absorption rate reaches the maximum sulfur capacity of the desulfurizer.
Analyze the sulfur content of the imported and exported materials, calculate the cumulative desulfurization amount based on the total amount of material processed, and determine whether the designed sulfur capacity of the desulfurizer has been reached; the desulfurizer needs to be replaced promptly once it becomes saturated.
To calculate the total sulfur capacity and the actual sulfur capacity, I would like to ask the team at Northwest Institute whether their calculations are accurate. Our factory’s cost is calculated by them.