Is it better to use a self-priming pump or an submersible pump for underground amine liquid tanks?
Thread Content
The few reference projects I saw all used submersible pumps – why not self-priming pumps? Any opinions? Thanks @ylb913
We haven’t used self-priming pumps, and there doesn’t seem to be any problem with submersible pumps.
We have now buried this underground tank below the permafrost line. It’s not possible to create a very long opening on the equipment that extends above the ground, so submersible pumps are not suitable for use in this case. Do you use self-priming pumps or submersible pumps for the other underground tanks?
I have no experience with the use of self-priming pumps.
We have plenty of self-priming pumps; before starting the pump, it is necessary to create pressure inside the tank for it to be able to draw fluid, which is more troublesome compared to pumps that require external pressure.
If the self-priming height is sufficient, isn’t it possible to draw the liquid up directly? At most, the pump would need to be refilled temporarily. Aren’t submersible pumps even more troublesome when it comes to maintenance and repairs?
We use self-priming pumps, and the biggest issue at present is vacuum formation; it’s better to ensure a certain pressure in the underground tank. Currently, we employ pressure filling to maintain the pressure at the pump inlet
Was the suction height set too low? Isn’t there a liquid level alarm or something, that shuts off the pump when the lower limit is reached?
That’s the problem: when this underground tank was designed, no consideration was given to the possibility of failures in the remote-level gauges; there is no on-site level gauge for comparison. Since the oil comes from acidic water, it contains high levels of ammonia and hydrogen sulfide, which causes crystallization and blockages in the funnel part of the radar level gauge. As a result, the radar level gauge hardly ever functions properly – it’s really frustrating