Urea-Ammoniumnitrate (UAN) Production Process

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Ammonium nitrate (AN) and urea are used as feedstocks in the urea-ammonium nitrate (UAN) liquid fertilizers production. Urea, ammonium nitrate and water are mixed in the final tank. A typical end product consists of 40 % ammonium nitrate and 30 % urea with water making up the remainder.

Vaisala K-PATENTS® Process Refractometer PR-43-GP is installed to monitor the mixing of urea and ammonium nitrate. A second installation point is for the finished product during transfer to the end storage tank. The refractive index (R.I.) value is used to monitor the addition of urea and ammonium nitrate. R.I. is an essential quality parameter for the finished product concentration.

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Urea-Ammoniumnitrate (UAN) Production Process

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