Specialized DEF dosing pumps for your SCR system

SCR names a process called "Selective Cathalytic Reaction". In this process, the nitrogen oxides produced during combustion are post-oxidized by adding a reducing agent like DEF / UREA / Adblue® in a special catalytic converter. The exhaust gas emitted is therefore practically free of pollutants.

The SCR dosing pumps for Adblue® from SCHERZINGER are tailor-made and are adapted to your individual SCR system configuration. This means that they are not only suitable for newly designed systems, but are also ideal for retrofitting your SCR system. 

Of course. We have decades of experience in pump construction and are available to our customers and partners with help and advice. Our particular strength is that the pumps and applications we develop are perfectly matched to your system or application. This means: You have the requirement - we have the solution. If you are faced with the challenge of selecting the perfect SCR system for your exhaust system, we are the right partner for you. Our SCR pumps deliver UREA / DEF / Adblue® safely and reliably and help you to reduce emissions with your exhaust system in all marine systems.

Scherzinger masters the requirements of both possible types of DEF / UREA / AdBlue® injection: low-pressure systems at approx. 4 bar, which swirl the DEF / UREA / Adblue® with the aid of additional compressed air. Also applicable for systems with a higher operating pressure, which atomize the DEF / UREA / Adblue® solely via the liquid pressure at approx. 7-10 bar and inject it into the exhaust gas flow via pulsed injectors. This gives you the ideal DEF / UREA / Adblue® injection for your maritime deNOx system at all times.

SCHERZINGER offers so-called booster pump modules for installation close to the main tank, especially for installation situations where large height differences > 9,8 ft have to be overcome from the main UREA / DEF / Adblue® tank to the SCR dosing system of the ship. These pump modules can be installed as pressure booster modules with an integrated pressure regulator between the main tank and the dosing module.
Optionally, the booster pump may be installed close to the main tank in order to draw the UREA / DEF / Adblue® from the main tank and pump it over in a day tank close to the dosing module.

SCHERZINGER SCR dosing pumps carry a CE marking. The SCR dosing pumps comply with the IMO MARPOL regulations.
For SCR dosing pumps under 1,000 l/h, approval by a class society is not required. For larger SCR dosing quantities and flow rates, the pumps can be approved by the class societies DNV GL and Lloyds Register.

The SCR dosing pumps are available in different sizes, based on two gear pump sizes. This means that urea / AdBlue® requirements of 0.5 to 4,500 l/h can be reliably served in order to supply engines with a maximum output of a few hundred kilowatt hours up to 100,000 kW. This is achieved by combining different pump sizes, either individually or in parallel. This means you can easily configure an Adblue® dosing pump that is perfectly matched to your exhaust system.

The SCR pump can build up a pressure of up to 10 bar in continuous operation with urea / AdBlue® and can therefore overcome delivery heights of up to 25 m, for example, and ensure an injection pressure of 7 bar at the urea / Adblue® injector. Your DeNOx system is therefore also able to overcome individual delivery heights without any problems and guarantee Adblue® injection without any problems.

Motors with 24V direct current and any three-phase motors for all required three-phase voltages, e.g. 230/400V, 50Hz, can be used for your SCR System. If required, a voltage converter to 24V can also be integrated into the control cabinet.

Depending on the application, up to six SCR pumps can be installed on one SCR pump module and controlled using the hardware and software developed by SCHERZINGER. The controller in the Adblue® dosing module works with the Phyton programming language, which was specially developed for machine learning, for fast and precise control.