To meet EPA air pollution standards for sulfur dioxide emissions, Montgomery County’s North Incinerator plant injects finely powdered limestone into the three incinerator units housed at the facility. Long-radius stainless steel sweep elbows conveyed approximately 18,000 pounds of the material through the company’s dense phase pneumatic conveying system daily. The problem? Lime is incredibly abrasive and those elbows — critical components of the conveying system — were literally being worn away.
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