Can SiO2, as a refractory' ingredients which was used to lining inside a conversion reactor, react with SO2 and SO3 gasses inside reactor? My customer claimed that SiO2 will react with sulfur gas and then corrode their S304 steel, which was used to construct their reactor. As much as I knew, SiO2 can only be used as catalyst or capture sulfur gas in other process but it does not react with sulfur gas to produce any corroding substance.
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Brian Dalder Forum Moderator 175 Posts
Re: Will SiO<sub>2</sub> React With Sulfur Gas?12 August 2009 at 1:29pmThis question is way beyond my area of expertise. From what I have read on this subject, I suspect whether you have a corrosion problem or not will depend on the operating temperatures, concentrations, and what other chemical species are present. I have one reference that indicates that a high silica refractory type is resistant to sulfur vapors (SO2 and O2) as long as the temperature is greater than 600° C. For further information, I suggest you consult a reference on this subject such as Carniglia, Stephen C. and Barna, Gordon L., “Handbook of Industrial Refractories: Technology Principles,Types, Properties and Applications,” Noyes Publications, 1992; Harbison-Walker, “Modern Refractory Practice,” Fifth Edition, 1992; or Plibrico-Japan, “Technology of Monolithic Refractories,” English Edition, 1984.