Management of the sulfur melting section in sulfuric acid production plants
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The sulfur melting section of the sulfuric acid production plant is the part of the entire facility where the most problems arise, and it presents difficulties in terms of process operation and equipment maintenance. Let’s discuss together the management issues related to the sulfur melting process: 1. Management of the raw sulfur storage area: how to deal with the problem of fires caused by sulfur dust; 2. Management of belt conveyors; 3. Treatment of sulfur vapor generated during sulfur melting; 4. Usage of the heat exchange coils used in sulfur melting; and so on. Feel free to share your opinions and discuss these topics together.
This topic is great. For example, in terms of fire prevention, it is generally necessary to increase the humidity of sulfur, but this is not conducive to preventing corrosion, reducing smoke production, or lowering consumption. Coils have a lifespan that can sometimes be as long as 4 years, while at other times it’s less than half a year; it’s really hard to understand. We significantly improved the sulfur vapor issue last year by installing a taller chimney. The problem of easy ignition of molten sulfur, especially due to the high temperature of its vapor. For example, the temperature of the steam we introduce can sometimes reach 300 degrees.
Fire prevention in sulfur storage facilities is a major issue: At present, our company mainly uses water spraying inside the storage areas, but this leads to severe equipment corrosion, increased steam consumption, higher amounts of alkali required for sulfur melting, serious problems with materials sticking to the conveyor belts, and substantial amounts of steam escaping from the sulfur melting tanks. How to control dust and reduce the risk of fires and explosions is key to sulfur melting management.
Our company uses a sulfur-fixing and melting device, but a lot of dust is generated when adding sulfur-fixing agents to the melting tank. Although there are exhaust systems in place, their effectiveness isn’t very good. Are there any better solutions? Our company also releases sulfur vapor into the atmosphere, but due to the deposition of this vapor, it’s not ideal as it tends to accumulate on the equipment. I wonder if there are any other good solutions? If a vacuum pump is used, which one is suitable?
By using cooling water to keep the steam temperature below 200, the dust can be completely pumped out of the sulfur melting tank