National Fertilizers Interview Questions, Process, and Tips

Surging and choking are phenomena that occur in pumps. Surging is the unstable flow condition where the flow rate fluctuates, while choking is the condition where the flow is restricted.

• Surging occurs when the flow rate through the pump exceeds the pump's capacity, causing the flow to become unstable.

• Choking happens when the flow rate is restricted due to a blockage or narrowing in the pump or piping system.

• Surging can...read more

Burrets in urea production can be controlled by optimizing the process parameters and using anti-burret agents.

• Maintain proper temperature and pressure conditions in the reactor

• Ensure uniform distribution of reactants and catalyst

• Use anti-burret agents such as methanol or ammonia

• Regularly clean the reactor to prevent buildup of impurities

• Monitor the process closely to detect any deviations from the optimal conditions