D2nox reduces nitrogen oxides by up to 90% wherever fuel is burned - without additional fuel consumption, without power losses and without sooting of the intake ducts.
D2 noxreducer ("D2nox")
D2nox is a self-sufficient NOx emission reduction system based on exhaust gas recirculation. The main difference to classic EGR/ECR is that the recirculated exhaust gas is cleaned and cooled before it is fed back into the engine.
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D2nox is characterized by its ability to significantly reduce the formation of toxic nitrogen oxides without exceeding the emission limits of other particles or increasing fuel consumption.
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Thanks to its modular design, D2nox can be customized or manufactured in larger units, from boxes to containers.
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This flexibility makes it possible to meet a wide range of performance requirements and offers a scalable solution for diverse applications.
D2nox is particularly advantageous in the shipping industry, where shipping routes pass through areas (rivers or sea zones) where nitrogen oxide emissions are taxed or where there is a risk of driving bans if limits are exceeded. Norway is a pioneer here, the EU and other countries are moving in the same direction and have set up Emission Control Areas (SECA/NECA), see diagram below. D2nox can solve this problem. The installation of a D2nox system in an inland vessel takes less than a week in most cases.
D2nox can be integrated into any marine vessel infrastructure.
D2nox secures the continued existence of older ships and ship engines in inland and maritime shipping, therefore ensuring sustainability.
Proposed and existing SOx and NOx emission control areas.
D2nox is used wherever fuel is combusted.
D2nox - all the advantages at a glance
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D2nox is a self-sufficient emission reduction system and can be integrated into any combustion engine infrastructure.
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D2nox has a modular design and can be used in both stationary and mobile operation.
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D2nox works independently of load and temperature in 24/7 operation.
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D2nox reduces nitrogen oxides with an extremely low increase in CO and without increased fuel consumption.
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D2nox does not use any flammable media in the basic version
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In operation or in the event of failure, D2nox has no negative impact the engines operation!
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D2nox is not an SCR catalytic converter with complex infrastructure, such as urea tanks, pipelines and complex control systems and does not interfere with the engine management systems.
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Older marine diesel engines can achieve IMO TIER III and other emissions regulations with D2nox
Technical data
D2nox functional diagram
The exhaust gas supply is connected upstream of the throttle valve (3) and feeds the exhaust gas into the particulate filter (9). The cleaned exhaust gas is routed via the exhaust gas volume control valve (8) into the exhaust gas cooler (7),
where the exhaust gas is cooled by a water injection system (10). The cleaned and cooled exhaust gas is routed to the intake side of the compressor and fed to the engine (4) via the compressor (5).
application areas
Inland shipping
D2nox is perfectly suited for inland waterway vessels (and seagoing vessels) to significantly reduce nitrogen oxide emissions - the requirements of TIER III can be met with this technology. D2nox was installed on an inland waterway vessel with a Cummins 4BT engine for test purposes in summer 2023; TÜV-Süd documented the test results. As D2nox does not interfere with the engine technology, the requirements according to the European Standard of Technical Requirements for Inland Navigation (ES-TRIN) are low.
Maritime shipping
The world fleet of 90,000 ships burns around 370 million tons of fuel per year. For a container ship, for example, the fuel consumption at full power (Brake Specific Fuel Consumption) is 0.171 kg/kWh, which means around 14,380 liters of fuel per hour. D2nox can be applied for use on sea going vessels. Alternatively, the D2noxH version can be used, which not only leads to a significant reduction in nitrogen oxides (75-90%), but also to significantly cleaner combustion and a reduction in consumption of up to 10% driven by to the use of hydrogen, which is injected into the combustion chamber in small quantities. The hydrogen is produced directly on board by steam reforming through the conversion of methanol. The process efficiency of methanol reforming is higher than that of water electrolysis, as the reformate has a higher calorific value than methanol and does not require electricity.
Generators
In many places, electricity is produced with generators that emit toxic nitrogen oxides. Examples are the generators in biogas plants or conventional diesel generators. An average luxury resort in the Maldives consumes over 10,000 litres of diesel per day to generate electricity. D2nox can also lead to a significant reduction in nitrogen oxides in stationary engines. In combination with CATS as a steam engine, a significant increase in energy generation can be achieved by converting unused thermal energy into electricity. Fuel consumption can be significantly reduced through the combined application and the resulting higher power yield.
