Sulfur Daily Question 2018.12.11
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Why is it necessary to reduce alumina catalysts? Answer: The first and second Claus reactors of this unit are equipped with alumina catalysts, which facilitate the reaction between H2S and SO2. After the catalysts have been in use for a certain period of time, the excess oxygen present in the process gas causes the active Al2O3 components in the catalysts to become deactivated through salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate. Therefore, it is necessary to reduce the catalysts before shutting down the unit.
The first and second Claus reactors of this unit are equipped with alumina catalysts, which facilitate the reaction between H2S and SO2. After the catalysts have been in use for a certain period of time, the excess oxygen present in the process gas causes the active Al2O3 components in the catalysts to become deactivated through salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate
The active component Al2O3 in the catalyst is deactivated by salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate
The first and second Claus reactors of this unit are equipped with alumina catalysts, which facilitate the reaction between H2S and SO2. After the catalysts have been in use for a certain period of time, the excess oxygen present in the process gas causes the active Al2O3 components in the catalysts to become deactivated through salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate. Therefore, it is necessary to reduce the catalysts before shutting down the unit
The first and second Claus reactors of this unit are equipped with alumina catalysts, which facilitate the reaction between H2S and SO2. After the catalysts have been in use for a certain period of time, the excess oxygen present in the process gas causes the active Al2O3 components in the catalysts to become deactivated through salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate. Therefore, it is necessary to reduce the catalysts before shutting down the unit
Under the action of a catalyst, H2S reacts with SO2. After the catalyst has been in use for a certain period of time, the excess oxygen present in the process gas causes the active Al2O3 component in the catalyst to become deactivated through salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate. Therefore, it is necessary to reduce the catalyst before shutting down the plant.
After being used for a certain period of time, the catalyst becomes poisoned due to the excess oxygen present in the process gas, which causes the active Al2O3 component in the catalyst to become salted out and inactive, resulting in a decrease in sulfur conversion rate. Therefore, it is necessary to reduce the catalyst before shutting down the plant
The first and second Claus reactors of this unit are equipped with alumina catalysts, which facilitate the reaction between H2S and SO2. After the catalysts have been in use for a certain period of time, the excess oxygen present in the process gas causes the active Al2O3 components in the catalysts to become deactivated through salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate. Therefore, it is necessary to reduce the catalysts before shutting down the unit.
Under the action of a catalyst, H2S reacts with SO2. After the catalyst has been in use for a certain period of time, the excess oxygen present in the process gas causes the active Al2O3 component in the catalyst to become deactivated through salination, resulting in catalyst poisoning and a decrease in sulfur conversion rate. Therefore, it is necessary to reduce the catalyst before shutting down the plant.
Answer: The first and second Claus reactors of this unit are equipped with alumina catalysts, which facilitate the reaction between H2S and SO2. After the catalysts have been in use for a certain period of time, the excess oxygen present in the process gas reduces the activity of Al2O3 in the catalysts
The process gas contains a high level of oxygen; the excess oxygen reacts with sulfur dioxide and water present in the process gas to form sulfuric acid. This sulfuric acid then reacts with alumina to produce aluminum sulfate, which leads to catalyst deactivation and a decrease in conversion rate.