Urea by carbon dioxide stripping
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In a urea plant using the carbon dioxide stripping method, when the high-pressure methamine pump is started and the pump body is heated with steam condensate, is the liquid discharged?
Generally, no emission occurs; the ammonium methoxide solution is directed directly away
The inlet piping and pump body do not accumulate much condensate, so it is generally not necessary to drain it. This prevents crystallization caused by inadequate pump preheating or too high a concentration of methamine solution.
No emission is needed; there isn’t much condensate accumulated inside the pump
There is no need for discharge. After repairing the pump, we test it using condensate; once it passes the test, it is directly integrated into the system. Meanwhile, the shut-off valves for ammonium acetate solution and condensate are opened and closed to switch the flow of materials
Putting condensate directly into the system has little impact on it, but good practice dictates minimizing unnecessary water intake into the system