Railcar unloading

How to Pump Crude Oil Efficiently and Quietly at Your Industrial Rail Terminal

Multi screw pumps increase the flow rate and reduce the noise level at the same time

The unloading of railway tank cars loaded with crude oil must primarily be handled quickly and efficiently to avoid high costs and long downtimes for the operators. As a global specialist in complex fluid handling, NETZSCH Pumps & Systems has presented an efficient solution to an industrial rail terminal operator. 

We will show you how you benefit from using a high-performance NOTOS®multi screw pump from NETZSCH at your railway terminal.

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Crude Oil, Industrial Rail Terminal, NETZSCH, Pumps, Systems

Pumps for unloading crude oil at an industrial rail terminal

Crude oil deposits are very unevenly distributed around the world. For this reason, crude oil often has to be transported long distances by ship, rail or a combination of both. This usually takes kilometer-long trains with hundreds of tank cars. The trains are dispatched at special industrial rail terminals for loading and unloading crude oil. The changing weather conditions and the different viscosities of the oil repeatedly pose challenges for the operators.

Inefficient and noisy gear pumps during crude oil unloading

The operators of a large industrial rail terminal in the USA initially contacted NETZSCH because they were dissatisfied with the noise level of the three gear pumps used for unloading crude oil. The gear pumps caused a noise of up to 100 decibels, equivalent to a jackhammer's volume. In addition, the terminal was to be expanded with two more unloading units, so six more pumps were needed.


degree Celsius medium temperature

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Self-priming NOTOS® 4NS geared twin screw pumps convince by high flow with minimal turbulence. 

Multi screw pumps ensure efficient and low-noise crude oil unloading

After an on-site visit by experts from NETZSCH, the global specialist for complex fluid handling proposed using several NOTOS® 4NSmulti screw pumps with double-acting mechanical seals in cartridge design and external barrier system. Crude oil of various qualities was to be pumped at the new terminals. This meant that the pumps had to be able to handle varying viscosities (crude oil from API grade 10 to 52). Which, in turn, inevitably required different system pressures for draining. The NOTOS®multi screw pumps are particularly well suited for this due to their low NPSH value and the resulting excellent suction behavior. Even the change of seasons and the temperature-related viscosity changes of the oil are no problem for the multi screw pumps from NETZSCH.

This significantly reduces the operating costs at your rail terminal since the NOTOS® pumps work extremely efficiently and quickly, regardless of viscosity. In addition, these multi screw pump models have significantly quieter running characteristics than gear pumps. The noise level has thus been greatly minimized. Since the pump can run dry for a short time when emptying the residue of the boiler, special blocked, double-acting mechanical seals have been installed. This allows the pumps to run dry for a certain period. The pumps are also designed according to API 676 standard for safety reasons.

All these highlights, combined with the excellent service and expertise of the NETZSCH team on site, convinced the operators to invest in the new pump systems for unloading crude oil from railway tank cars for their project. All pumps have been in successful operation since then.

NOTOS® 4NS geared twin screw pump

NOTOS® 4NS Geared Twin Screw Pump, NETZSCH, Pumps, Systems