What causes the increase in transformation resistance?
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There is a sulfuric acid production plant with a capacity of 200 kt/a; it was put into operation on January 23, 2016. Currently, the wind pressure at the fan outlet is 32 kPa, and the resistance in the first conversion stage has reached 10 KPa. What could be the reason for such a situation?
The raw materials are crucial; if the sulfur melting ash content is not properly controlled, this problem is very likely to occur
It’s because sulfur filtration doesn’t work well; high ash content is the cause.
Liquid sulfur is filtered using cellulose; the ash content, as determined by testing, is 30 ppm
It’s that serious? Check if the catalyst has become powdered, caked or scarred, as well as for moisture and acid mist The resistance increase is way too steep
The acid mist level at the fan outlet is not high, and the moisture content at the boiler outlet is 2.5 g/NM3; I can’t believe these measurement values. The catalyst became severely fragmented during the major repair.
It is necessary to rule out steam leakage from the sulfonate gun jacket.
Today, the resistance reached 15KPa; the device has no tears. It’s tough for those working with equipment
What is the resistance when first starting to drive?