Problems in the sulfuric acid production process? ?
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:Victory: In the sulfuric acid production process, there are processes referred to as “3+2” and “two blowing and two absorption”. Could those who know more please explain what these terms mean? Could you give an answer? ? I thank you here! ～
3+2 means that the conversion process is divided into two stages, totaling 5 conversion steps: the first conversion uses 3 catalyst beds, while the second conversion uses 2 catalyst beds. Two conversions and two absorptions refer to entering the first absorption tower for acid absorption after three stages of conversion, and then entering the second absorption tower for acid absorption after two more stages of conversion. Is \"two blows and two draws\" a typo for \"two rotations and two draws\"?
"3+2” refers to the fact that the converter used for the catalytic oxidation of sulfur dioxide into sulfur trioxide is divided into 5 conversion stages; the Nanhua Phosphatic Fertilizer Plant has such a system, with 3 catalyst beds used for the first stage of conversion and 2 catalyst beds for the second stage. Two conversions and two absorptions refer to entering the first absorption tower for acid absorption after three stages of conversion in one step (with a conversion rate of 96%), and then entering the second absorption tower for acid absorption after one more stage of conversion.
What does \"two blows and two draws\" mean? It means two rotations and two draws, right? 3+2 means one conversion for stages 1 to 3, and another conversion for stages 4 to 5; as for the two draws, there’s no need to explain them, right?