Dynamis has a series of equipment for the industry, such as hot gas generators, dryers, gasifiers and burners. Among the burners, the D-CBurner is the secondary burner developed by Dynamis for kiln precalciners. D-CBurners can be installed in place of coal or petcoke injection tubes, for example, to improve the mixture of fuel and gases inside the precalciner through its two shaping air channels, the external one with axial component and the tangential one with axial and radial components, giving greater flexibility to the burner, allowing it to be adjusted to the needs of the process.
They are often used to reduce NOx and CO emissions. In these cases, the entire burner design (shaping air injection nozzles, the number of burners used, their positioning in the precalciner, etc.) is achieved by means of computational simulations (Computational Fluid Dynamics Analysis – CFD), which allow to maximize the results and ensure that the foreseen objective (for example, of NOx reduction) is fully achieved.
A successful case in the use of D-CBurners was their application in a cement plant in California, USA. The plant had a Pyroclon precalciner between the smoke chamber and the lower cyclones, with coal being injected above the tertiary air duct through 2 tubes directly from the dosing system. The NOx emission at the output of the tower was about 745 to 764 ppm.
Through CFD simulations, the installation of 02 secondary burners at different points was defined: one below and one above the tertiary air duct, with the results of the simulations pointing to a significant reduction in NOx emissions, with a reduction guaranteed by Dynamis of 15 % in these emissions.
A set of 2 D-CBurners, their new shaping air fan, plus accessories such as butterfly valves and pressure gauges for air control was supplied. After startup, a 25% reduction in NOx emissions was observed, higher than the 15% guaranteed by Dynamis.
Dynamis has a range of equipment for different applications, developed by a technical body with extensive experience, using modern tools acquired in the market and some even developed internally. Evaluating existing systems, identifying bottlenecks, studying improvements, and supplying equipment, Dynamis works at all stages of the project to ensure that your company will have the best solution for your process. For Dynamis, trust matters.