Do you know that each desander manifold needs its own centrifugal pump? That indicates if you break the centrifugal pump, you must find someone to make the same one and its cost must be very high. Therefore, you must learn how to protect the desander in order to avoid such situation. There is some information about how to protect a desander.
1. A desander is to isolate dirt from waters. After a long time of operation, the desander possibly has some parts that are not well, which is hard to avoid because every machine is destined to be useless one day. To protect the desander, you need to check the desander time from time. It is suggested that you replace some parts of the desander to prolong its lifespan.
2. To make desander on good operation is also a way to protect it. For example, the balance of feed head, apex opening and feed rate is essential to the desander’s optimal performance. If the balance is not proper, not only is the performance of desander affected, but also the components are damaged. If the operation is normal, feed slurry enters into the inside of the desander at a high speed, which leads to a whirlpool effect in the cone interior. Such an effect drives the denser and larger particles outward, while the lighter and smaller particles go to the center of the cone. Once you find the speed of the motion is not high enough, you should stop the operation to whether there is a mistake. If you run the desander again and the problem still exists, you should have a careful check on the desander to solve the problem. In such way, your derrick screen is protected.
3. The desander removes the sandy material not only by the motion, but also by low-pressure vortex which pulls the excess liquid and small particles. During this process, the quick air stream also helps the separation. However, this process will meet some problems such as roping which is to describe a solid discharge stream flows from the desander. Roping can cause reducing solids removal capability and increasing the possibility of wearing down desander components. Sometimes it will bring potential damage to the feed pump. Therefore you must make roping not happen if you want to protect the desander. How to do it? Roping happens because the apex opening is overloaded with solids, which prevents air from moving to the cone. Such an apex blockage can make feed material not move downward. That is an abnormal operating. If you still keep operating, the more time you continue, the more difficult to clear the particles. What’s more, with such a risk, the risk of damaging to the desander will be increased.
In a conclusion, if you want to protect the desander, you should know how to operate it correctly and how to avoid roping happen.