Case Studies

The customer runs an amine recycling plant. The amine sulfate delivered is processed in a rectification system. Caustic soda reacts with the sulfuric acid contained in the amine sulfate. The result is a sodium sulfate solution which is pumped into a storage tank. The Boerger Protect Rotary Lobe Pump is used in the neutralizing process by adding sulfuric acid. The Boerger Protect pumps the sodium sulfate solution from the storage tank back to this storage tank. In the meantime, sulfuric acid is mixed in on the suction side. A pH value can be measured using a meter attached to the pressure side. This procedure is repeated until the sodium sulfate solution indicates a pH value of 7.

The eccentric screw pump previously used kept having problems with the sealing. As the air quality control requirements are applicable here, the Boerger Protect Rotary Lobe Pump was selected. The barrier pressure was set to 8 bar in the thermosyphon tank. If the pressure drops below 5 bar, a pressure switch turns off the system. The medium pressure is restricted to a maximum of 3 bar by a pressure transducer. This ensures the minimum barrier pressure of 2 bar above feeding pressure.

Technical data

At a slaughterhouse, pigs and cattle are killed for food production. The slaughterhouse uses a Boerger Rotary Lobe Pump to transfer animal blood.

Once the animals have been slaughtered, the blood drains off in the bleeding zone. A large stainless steel basin is there to collect all the blood flowing from the incision. The Boerger Rotary Lobe Pump conveys the blood from a recess in the basin to a storage tank.  

The slaughterhouse was previously using a membrane pump to do this.  However, the ear tags from the animals kept getting stuck between the membranes and causing damage. The operators at the slaughterhouse sometimes had to open up the membrane several times a day, which cost time and money. The customer is now highly satisfied with the Boerger Rotary Lobe Pump. Alongside the pump's resistance to solids and the operation stability, the customer was particularly impressed with the low maintenance.

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Boerger Rotary Lobe Pumps are ideal as mobile, self-priming rotary lobe pumps on vehicle trailers when needed fast in the event of a flood, canal work, pumping station support, waste water treatment and for disasters. Suction and pressure hoses are installed in just a few minutes. The German Federal Agency for Technical Relief (THW) use Boerger mobile units for these purposes.

The self-sufficient pumping stations of the Technical Relief Service are ideally suited for use in the open.

Technical data

A special branch was looking for a reliable, solids-resistant mobile pump for combating oil-based contamination in the fight against sea pollution. The pump needed to be used to remove oil spills from the sea in coastal areas. They were looking for a pump which could also be used in clean-up operations as a transfer pump for discharging portable tanks or other collection tanks. The pump needed to convey the oil over long stretches to tanker vehicles or suction tankers.  Several types of pump were tested. Hose pumps, membrane pumps and eccentric screw pumps were all considered for their purposes. However not one of these pumps were suitable for the application. The hose pump had persistent problems with excess wear and damage to the hose unit, the membrane pump had constant faults in the ball valves and the design of the eccentric screw pump was not suitable for mobile use. The customer chose a Boerger Rotary Lobe Pump. 

The Boerger Rotary Lobe Pumps are ideal for this type of application. In addition to the compact and space-saving design, the customer was particularly impressed with its resistance to solids, the robust design and the proven high reliability of the Boerger pumps. A special vehicle with chain drive was used for the mobile pump unit. The Boerger pump was driven by diesel motor. This means it can be used in any location.

Technical data

A civil engineering company increasingly uses trenchless installation technology. This special technology allows pipes, electrical cables etc to be installed without having to dig trenches.  One company specializing in this technology works with the horizontal directional drilling (HDD) method.

A horizontal flushing bore is made in the ground which can be controlled using modern detection technology. Flushing nozzles are attached to the drill head. Bentonite is then fed into the hole through the nozzles. The Bentonite flushes the bore hole to stabilize the bore channel and cool the drill head.

The horizontal flushing bore rig is installed on the company's operation vehicle which also accommodates a Börger Rotary Lobe Pump for pumping the bentonite from the tank to the drill head. The plant engineer emphasized the need for a pump with a long service life, high resistance to wear and one that is very user-friendly in the event of maintenance. The plant engineering company and their customer are highly satisfied with the Börger Rotary Lobe Pump. They have since installed over 100 Boerger Rotary Lobe Pumps in horizontal flushing bore rigs.

Technical data

A manufacturer of paint, varnish and special chemicals needed a high performance pump to convey adhesive for tiles and parquet. The manufacturer previously used a piston diaphragm pump for this purpose. However, the capacity of the piston diaphragm pump rapidly dropped with the increasing viscosity of the pumped medium. The piston diaphragm pumps also generated high energy costs. 

Because of the negative experience with the membrane pump, the chemical manufacturer wanted to test an alternative pump extensively before purchasing. The customer agreed with Boerger GmbH to an eight week test phase. Due to the very demanding characteristics of the pumped medium, a Boerger Protect Rotary Lobe Pump was installed with double-acting mechanical seal. The pump is pressurized by a Boerger thermosyphon system. The Boerger Protect transfers the adhesive from a mixer into a storage tank or to their bottling process. During the transfer to bottling, a low pulsation and even transfer is essential. 

After extensive testing, the customer accepted the machine and is now completely satisfied with the Boerger Protect Rotary Lobe Pump. Pump capacity could be boosted by more than 150% with the Boerger Protect, compared to the piston diaphragm pump previously installed. Energy costs have dramatically reduced.

Technical data