Problem No. 21: Vibrations in the discharge line of the HP reciprocating carbamate pump
In all urea plants, high pressure pumps are used to pump the feedstock ammonia and carbon dioxide to the high pressure synthesis section and in most urea plants carbamate liquid is recycled from the recirculation section to the synthesis. Reciprocating pumps are used for these services and sometimes vibration problems occur in the discharge pipeline. This discussion considers the possible causes and solutions to problem.