What causes the low concentration of dilute acid in the purification power wave?
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Our company uses a setup that involves mixing sulfur with ferrous sulfate to produce acid; why has the concentration of the dilute acid not been able to increase recently? The concentration is only around 2%. I would like to ask whether a low concentration of the power wave dilute acid will have an impact on the subsequent stages
A decrease in sulfur trioxide produced by the incinerator or an excess of moisture in the raw materials will not have an impact on the subsequent systems
This post was last edited by mkp369 on 2018-4-20 at 16:58. Generally, the combustion of sulfur does not produce SO3, right?
The gas temperature entering the purification system is low, either due to a low gas concentration or a high water content
Indeed, the temperature entering the purification system is too low; as a result, the diluted acid may not have been sufficiently concentrated； Could another reason be that too much scoria was introduced into the diluted acid used for purification, and this scoria reacted with the diluted acid, preventing its concentration from increasing?
What impact does a low concentration of dilute acid have on subsequent steps? It’s probably the high concentration that makes subsequent processing troublesome
The low concentration of acid in the power wave is due either to a reduced sulfur trioxide content in the flue gas or to a higher water content in the flue gas, which dilutes the acid concentration.
This post was last edited by mkp369 on 2018-5-7 at 10:14. The low residual oxygen level at the flue gas outlet in the smelting process indicates that the combustion reaction is not efficient; as a result, less SO3 is produced in the flue gas, which leads to a low concentration of acid used for purification. Meanwhile, an inefficient combustion process results in an increased arsenic content in the purified acid, as there isn’t enough oxygen to oxidize As into As2O3. This prevents the electrostatic precipitator from capturing this arsenic-containing waste acid, resulting in high arsenic levels in it
No impact; hardly any dilute acid is recovered – it all goes to the waste acid treatment process
If the concentration of the purifying oleic acid is too low, it will affect the efficiency of arsenic removal through sulfidation; an appropriate acid concentration is beneficial for the sulfidation reaction