The specific process flow for producing sulfuric acid industrially using sulfur dioxide
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This post was last edited by Qingse Nianhua on 2018-9-27 at 11:17. What is the specific manufacturing process for sulfuric acid using sulfur dioxide in industry, and where can I find such information?
I want to add sulfur dioxide and oxygen to dilute hydrochloric acid with a concentration of 58%, with the resulting reaction producing concentrated sulfuric acid. Is this approach feasible?
Can concentrated sulfuric acid be produced from 58% dilute sulfuric acid using a concentration process? Why is it necessary to add SO2 and O2 as well? Moreover, a catalyst must be used in the reaction between SO2 and O2 to produce sulfuric acid. I’m not sure what your requirements are
I was thinking of using a process based on sulfuric acid to concentrate dilute sulfuric acid, but after doing some research I found that it’s not possible to use dilute sulfuric acid to absorb SO3. What are the existing processes for concentrating dilute sulfuric acid? I’d appreciate some advice.
As far as I know, there is the reduced-pressure falling-film evaporation process. Furthermore, if the amount of dilute sulfuric acid is not large, it can be added in small quantities as an auxiliary material in acid production processes, such as those for producing acid from acidic gases or for regenerating waste acid. In other words, the dilute acid is first decomposed at high temperatures to produce SO2, which is then reacted to form H2SO4; high-concentration sulfuric acid is obtained through condensation or absorption. This method is not suitable when the quantity is large.
Generally, 98.5 wt% concentrated sulfuric acid is used in industry to absorb SO3; either a too high or too low concentration is not suitable.