Sulfur paste deposition problem in the rich liquid tank
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During the inspection of the rich liquid tank, it was found that the sulfur paste deposited inside occupied more than one-third of the tank’s volume. Please identify the causes and suggest preventive measures
There are two reasons: one is that the gas is relatively dirty, and the other is that the oxygen content in the gas is high, which causes elemental sulfur to form within the desulfurization tower.
Prolonged high sulfur suspension, along with the failure to turn over the sulfur foam in the regeneration tank in a timely manner, resulted in a high sulfur content in the lean liquid, which then settled in the rich liquid tank after circulation.
Reply to 2# Yan Qiusheng: It’s not mentioned that most of the sulfur precipitation reactions take place in the desulfurization tower; the function of the rich liquid tank is to ensure more thorough sulfur precipitation, so as to prevent it from being oxidized into by-products in the regeneration tank