In sulfur recovery, how is the dust generated in the workshop handled?
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Our plant is a sulfur-based acid production facility, and the position of the sulfur melting unit is located upwind of our control room. During the sulfur melting process, a large amount of smoke and fumes float around our production site and control room. At first, there was no impact, but now it has been found that smoke causes severe damage to the circuit boards. In particular, accessories such as computer hard drives and network cards. Since this issue does not occur in the other units, it is suspected that it is caused by the fumes generated during sulfur melting; therefore, I would like to see what the situation is in your sulfur production workshop and how it is handled there. Gases composed of those elements are primarily produced when sulfur is in a melted state ； Is it caused by hydrogen sulfide in sulfur, which reacts with the copper in copper circuit boards? ； How does your plant handle sulfur-dioxide-containing flue gas? Is it by venting it, through chemical washing, or in a fully enclosed production process? I’ll send one copy to both sulfuric acid and your forum, so as to gather everyone’s opinions.
In its melted state, sulfur primarily produces sulfur vapor and releases dissolved H2S, which can react with metals such as copper, zinc, and silver. Our operators’ copper keys and silver jewelry turn black over time due to frequent contact with these sulfides at the work site. The chemical washing you mentioned is usually not used, but enclosed production can be considered, with the waste gases being fed into an incinerator.
Reply to 2# Clauspolunit: The introduction of an incinerator has a significant impact on the oxygen content in the air, and the water vapor generated by sulfur melting is also considerable. It’s uncertain whether the air drying load will meet the requirements.
Reply to 3# Alien Roaming: Usually, there is no problem. The waste gas in the fluidized bed of the sulfur recovery unit is treated in this way.
Reply to 4# Clauspolunit: I’m not sure what the capacity of your sulfuric acid production facility is; ours is 400,000 tons per year. With this load, there is concern that the oxygen level may not be sufficient.
Chemical filtration is applied to the fresh air in the control room to remove corrosive gases from the air. It is widely used in petrochemical plants
Reply to 2# Clauspolunit: Sulfur recovery mainly involves hydrogen sulfide and sublimed sulfur; molten sulfur is considered to be sulfur trioxide and sublimed sulfur. This section is different; the substances present are different!
I think we could consider using a pump to draw this exhaust gas to the incinerator for burning
Reply to 5# Alien Roaming: 400,000 tons per year of sulfuric acid; the amount of sulfur used is around 100,000 tons, which is similar to our level. There is no problem with operating in this way.
Reply to 7# Alien Wanderer: There can be no SO3; only sublimated sulfur and H2S.