How should the acid collected in the electrostatic fog liquid collection tank be handled?
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Our factory has designed a acid circulation purification tank for collecting acid from the electrostatic fog liquid collection tank used in sulfuric acid purification. However, this approach presents some issues: 1. The concentration of acid collected by the electrostatic fog liquid collection tank is not low, ranging between 2-3%. It is not reasonable to connect the existing acid transfer pipes to the purification filler tower’s circulation tank; instead, they should be connected to the empty tower (the first-stage washing equipment)； 2. Recently, the individual sulfur content in the flue gas from our factory’s copper smelting furnaces has exceeded the allowed limits significantly! (Up to 10 g/Nm3!) The acid collected in the electrostatic fog collection tank contains large amounts of elemental sulfur; if this acid enters the purification system, it will inevitably lead to an increase in resistance ； For the above reasons, the sulfuric acid production department of our plant decided at the regular production meeting yesterday afternoon to suspend the use of the electrostatic mist collection tank to collect acid for transfer to the purification system.
In our company, the purification process involves a venturi tube – a scrubber tower – electrostatic mist removal – and then entry into a drying tower. The water used for electrostatic mist cleaning also returns to the scrubber tower for reuse
It should revert to the first-level power wave; during my previous visit to Shandong Yanggu Copper Industry, I found that they did exactly this. This post was last edited by in the blink of an eye on 2007-12-14 14:02]
The design relies on returning to the empty tower (first-stage power wave) as supplementary water
Our factory uses a wet-process electrochemical method; the dilute acid collected through electrostatic precipitation is pumped directly into various dry absorption circulation tanks, where it is used to dilute the acid concentration. This approach not only increases the acid production volume but also improves the efficiency of recovering and reusing the dilute acid, with good results
Our device is designed as a back-driving wave gas-liquid separation tower for water replenishment! ~
It can be directly added as water at the inlet of your company’s absorption circulation tank to reduce the concentration in the acid tank. But the prerequisite is that your company has a large amount of elemental sulfur.
Generally, it is sent to the empty tower circulation tank and then to the spent acid treatment system for processing before being added to the dry-absorbed acid; this approach is not scientific as it contains many impurities that can affect the quality of the final acid product
Return to the empty tower (Level 1 power wave) as make-up water