In the sulfuric acid industry, multiple sets of sulfur waste heat recovery devices have suffered from severe corrosion problems due to the inaccurate measurement of the primary circulating acid concentration analyzer. This led to irreversible damage to key equipment such as evaporators, heaters, preheaters, tower pumps, and demisters, causing huge economic losses and production disruptions to related enterprises.

Why has the analyzer for measuring the concentration of primary circulating acid become a common problem in the industry?

The reason is that level of circulating acid from diluter, which contains a lot of air. At present, all measurement techniques are unable to directly measure the concentration of sulfuric acid containing gas. To accurately measure the concentration of the primary circulating acid, it is necessary to completely remove the air from the sulfuric acid. Based on this analytical requirement, we independently developed a super-clean and stable gas-liquid separator. This separator is made of high-temperature and corrosion-resistant materials and combines siphon balance technology and two-stage high-efficiency vortex separation technology. It can effectively and thoroughly separate sulfuric acid containing air, which then enters the non-contact sensor for analysis. This ensures the accuracy and stability of the measurement data.