Dry absorption tower sulfuric acid
Thread Content
For the temperature increase of the conversion catalyst, it is required that the first and second acid absorption pumps be started when the catalyst temperature exceeds 70 degrees. I understand that high temperatures can cause the ceramic rings to crack; are there any other reasons as well? Today, our plant carried out a conversion and leak-checking process with temperature elevation; the temperatures in stages one and two reached over 100 degrees. Only the acid pump for drying was started – I wonder if this poses any risks? I would like to ask the fellow netizens.
Personal opinion: Besides the factors mentioned by the original poster, could it also be related to catalyst factors? Since the catalysts are pre-saturated before leaving the factory, as the conversion temperature rises, could SO2 in the catalyst precipitate or react partially with O2 to form SO3? If the absorption pump is not started, this could lead to excessive emissions
There’s definitely no problem. It’s only 100 degrees at stage one and two. The one-suction and two-suction towers can handle 100 degrees without any problem.
If, as mentioned on the second floor, sulfur dioxide is converted into sulfur trioxide, then the temperature of the conversion catalyst needs to be between 300 and 400 degrees Celsius, and an absorption pump must be used.