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EUROPEM
Belgium
Europem supplies skid mounted control skid for all types of fuels and waste streams, either in combination with the burner system or as stand alone items. Skids can be supplied in accordance with national and international norms and standards. One specialty of Europem is the design and fabrication of ATEX zone 0 skids for the collection and transport of explosive vapours.
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Belgium
Europem has supplied a large number of specialty burners. These burners are tailored to the specific needs of the client. MultiFuel burners for waste gases and waste liquids with or without precombustion chamber, Complex waste gas burners SRU burners with high ammonia content Ammonia burners Vertical fired burners for upto 20 different waste streams, some containing high amounts of salts … Specialty burners are developed using CFD simulations in combination with burner tests at the Europem test facilties in Belgium.
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Belgium
In cases where waste liquid’s or suspension’s need to be incinerated, EUROPEM uses liquid fuel injection lances equipped with ultrasonic atomisation nozzles, resulting in very fine droplets and an almost gas-like combustion process. This nozzle uses an atomizing fluid such as superheated LP steam or compressed air. EUROPEM Natural Draft and Forced Draft Burners Different configurations for the atomization nozzle are possible, depending on the burner design, capacity range and the desired spray pattern in relation to the combustion chamber. The nozzle operates based on the Hartmann Generator principle and was originally developed the early 1970s. In 2007, the nozzle was optimized and now has a fuel turndown ratio of 10:1. Hartmann Generator principle: Through a jet nozzle (D), a gaseous fluid flows with supercritical pressure ratio – meaning sonic speed. According to Mach and Salcher a periodical structure will build up in the stream (dotted line). Graph K shows the pressure cycles along the length of the gas stream. Oscillations occur by filling (pressurizing) and deflating the hollow space H. This is the principle used for the Ultrasonic Nozzle. A Hartmann Generator is placed as a concentric ring around a central liquid fuel pipe. The high exit speed of the atomizing fluid (compressed air, steam or combustible gas) alone achieves a rough atomization, caused by the negative pressure. The ultrasonic effect created by the Hartmann Generator oscillates the pre-atomized droplets at a high frequency, and further fragments the droplets into a very fine mist. Advantages: Low and high viscosity fluids are atomized into smallest possible droplets. No limitation on ash content and other solid particles in liquid fuels. Various fuel types can be used in one nozzle, no limitation on fuel mixtures. High durability due to low operating pressure for fuel and atomizer. Different nozzle types to obtain different spraying paterns
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Belgium
This Burner design is for use in forced draft or natural draft vertical combustors and thermal oxidisers and has a high turn-down capability. The venturi flame holder ensures that the flame remains stable under varying load conditions. The flame holder design ensures a stable gas flow around the flame and also controls the split between combustion air and cooling air in the vicinity of the burner head. EUROPEM Natural Draft and Forced Draft Burners A robust, low pressure drop burner design, used for burning waste gas and/or gaseous fuel in vertical combustors and thermal oxidisers. Can be installed as a single burner or used in a system as a central burner with additional satellite burners.
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Belgium
Most of the combustion systems currently available in the market attempt to achieve their low NOx emissions combined with low CO emissions and stable combustion by employing relatively long flames, staged combustion air/fuel and with mechanical provisions near the flame to create swirl. The EUROPEM Ultra-low NOx burners use a different philosophy to achieve complete and stable combustion along with ultra-low NOx emissions: The use of thin and short flame profiles: Empirical evidence shows that narrow and short flame profiles achieve the lowest NOx emission values. Controlled flame temperatures: The flame temperature is controlled at a temperature high enough to ensure that no CO is formed whilst the temperature is low enough to avoid any NOx formation. Oxygen concentration near the flame is controlled such that the faster hydrocarbon reaction depletes all the oxygen before NOx can be formed by the slower N2 to NOx reaction. Internal flue gas recirculation: The high velocities at the burner mouth create an internal venture effect which in turn results in internal flue gas recirculation around the flame. A stable and uniform temperature profile without hot spots created in the flame will further minimize NOx formation. EUROPEM Ultra-low NOx burners are equipped with a windbox giving tangential entry of the combustion air to create a natural swirl around the flame. This principle is also employed for the waste gases entering the burner so that additional swirl is created by one or more waste gas streams. Support fuel and rich waste gas are injected through a shell type disc to obtain a narrow and short flame profile. A “tulip flame profile” or “balloon flame profile” are selected, depending on the fuel characteristics.
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EUROPEM
Belgium
The Tulip Vortex burner was developed specifically for (temperature controlled) combustors for the treatment of lean waste gases and vapours. It employs the same design philosophy as the Ultra-low NOx Tulip Vortex burners but is designed for the combustion of lean waste gases, whilst minimizing support fuel requirements. The burner creates an intense gas recirculation zone near the burner to ensure that waste gas, flue gas and combustion air are mixed. The resulting moderate flame temperature minimizes NOx formation. The homogeneous temperature profile and swirl result in complete oxidation and low CO emissions.
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