Investigation on the quality of finished products in summer at a urea plant with an annual production capacity of 300,000 to 400,000 tons
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As summer arrived, the quality of the urea produced by the plant with an annual production capacity of 400,000 tons showed the following issue: the temperature of the urea particles at the bottom of the 19-meter granulation tower reached around 80°C； The amount of urea dust in the finished product has increased, with more hollow particles present. The amount of dust filtered out before May was 1 ton per hour, but it has now risen to 1.6 tons ； Nozzle manufacturer: Aerospace is one of such manufacturers. Current solution: Increase the rotational speed of the nozzles to reduce the particle size of the final urea product. Enterprises in the same industry are welcome to exchange ideas and discuss the current situation as well as the nozzle manufacturers and the solutions and measures taken.
Our factory previously used those from the Aerospace Research Institute; later, for various reasons, we switched to Wenling nozzles, and they are working fine so far. The bottom temperature in the Jiangnan region during summer is generally between 60-70°C, as measured in practice.