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Reasons for excessive sulfuric acid acidity

2025-11-22View Original

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Gentlemen! Our company uses a water-coal slurry process for gasification; the acidity of the sulfur products has always been within normal ranges, and the products meet A-grade standards. However, recent analyses show that the acidity level is above 0.004%, which does not allow the products to be classified as A-grade. What could be the reason for this? Is there anything similar to this situation? Please provide some guidance

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