Air compressor flow rate per hour (full cycle method)?
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May I ask the expert in the full-circulation aqueous solution method: what is the hourly flow rate of the current air lift – single-column air compressor, or what is the volume of air required per ton of urea?
Taking into account the design and practical production experience, an anti-corrosion air volume of 2 Nm3 per ton of urea is sufficient to meet the requirements for the single tower.
Based on practical experience, a volume of 1–1.5 m3 is more than sufficient to meet the anti-corrosion requirements; 2 m3 on the upper floor is also acceptable. The specific amount can be determined based on the analysis data from one’s own facility. If it is possible to keep the nickel content below 0.2 ppm, it is better to use less air, which helps improve the conversion rate, reduce venting, and lower ammonia consumption.
For self-stripping fractional columns, 2 m³ of air per ton of urea is sufficient