Россия Suomi Sverige United Kingdom USA Lechler ApplicationsGas cooling Downcomer Duct Downcomer Duct Plant protective pre-cooling As an alternative or addition to the gas cooling tower, the gas can also be cooled down after the preheating tower in the downcomer duct. This option is often used in new plants and plants with a long and straight duct. In the case of existing plants, injection into the downcomer duct is performed to optimize the process (e.g. to increase production or when using alternative fuels). In this way, temperature peaks can be compensated and where necessary, subsequent cooling in the gas cooling tower supported. Due to the associated reduction in the operating gas flow rate, there is an energy savings potential at the downstream fan. Our solution Regarding the downcomer duct, similar factors need to be taken into account as with the gas cooling tower. Owing to the smaller cross-sections and the higher velocity that results, the evaporation time is reduced compared to the gas cooling tower. The required outlet temperature and the available evaporation distance determine the amount of water required and the droplet size necessary for complete evaporation. Complete evaporation is required to prevent material build-up and to ensure the durability of the downstream fan. Due to the higher gas velocity and the resulting decrease in evaporation time, finer droplets are required. This is why almost exclusively twin-fluid systems are used. In order to provide the perfect solution, we configure the systems according to your process data and duct dimensions. Corresponding products Nozzle lances and systems for gas cooling Efficient cooling and conditioning Lechler nozzle lances and systems to generate the optimum droplet size range and distribute it as uniformly as possible in the gas flow. Learn more Technical data (PDF, 6.33 MB) Professional reports Basic design considerations for a flue gas cooling system and the potential advantages of a lower temperature operation for cement plants World Cement – 04/2015 Ashwin Patni Read now (PDF, 1 MB) Contact Armin Möck Key Account Manager | Lechler GmbH, Metzingen (Germany) Phone +49 7123 962-319 armin.moeck(at)lechler.de Claus Fritze Area Sales Manager | Lechler GmbH, Metzingen (Germany) Phone +49 7123 962-397 claus.fritze(at)lechler.de Measuring Technology The Lechler Develoment and Technology Center Precise measurements have long been the basis for clearly defined spray characteristics at Lechler. Learn more about it. Further information Simulations by CFD Materials Catalogues ImprintTerms of ServiceData protectionContact