Polishing of the magnetic flap level gauge: Flow obstruction in the magnetic flap level gauge is sometimes called grinding. Sanding occurs when particles or solids accumulate in the pipe, which in turn reduces the pipe cross-sectional area or flow path. This is related to the increase in friction loss. The accumulation of sanding can result in lower flow rates, lower conveying solids content and higher discharge pressure. This will have a negative impact on the output, and if ignored or ignored, it may cause major safety hazards. The accumulation of solids in the pipeline will eventually cause the pipeline to block.
The reduction in the cross-sectional area of the pipe due to grinding results in a large amount of energy being transferred to the small volume in the system pump. Over time, the carrier fluid or liquid will boil and the resulting vapor may be pressurized. Then the blockage may cause catastrophic failure, and the pump may even explode.
In some cases, a bed of particles or sediment may form at the bottom of the pipe without completely blocking the flow path. Under this operation, the pipeline continues to transport solids, however, it is generally recommended to avoid operating under these types of sanding conditions. If it is not resolved, this may cause the final pipeline to block, which will require a complete shutdown of the slurry system. Continuous operation under these conditions will result in higher pressure loss and higher energy requirements and associated costs.
If you have already determined the grinding in the slurry production line, which options can you choose? First, you can consider increasing the purge line by increasing the pump speed.
Second, you can consider introducing fine particles, as these fine particles help increase fluid density and viscosity, and can remove solid buildup/bed at the bottom of the pipe.
Another option to consider is to flush the pipeline with water, but this option must be used with caution because the pressure produced by the pump when pumping water is usually lower than the pressure produced when pumping slurry at the same given pump speed. Therefore, depending on the characteristics of the system, this may or may not be a feasible solution.
Of course, you can also close the pipe and remove the blockage manually. However, this may not be the most economical solution because it may delay website productivity and affect potential revenue.
It is a logical step to select the appropriate software tool when designing the magnetic flap level timing. This helps you to identify operating conditions and sanding risks. FluidFlow can help you characterize slurry and slurry pipeline models. The software allows you to determine the deposition rate of the slurry, and you can now choose from the four correlations of this function. Use any of the five methods to calculate the system pressure loss, and you can also consider the solids derating of the end suction centrifugal pump. Warning messages will be issued to help you identify any points of failure or risk of sanding/clogging of pipes.
Post time: 14-10-21