Patent DE-102006018760-A1 (DE)
Title: Method for the production of atomized spray from an application medium for application on a moving paper, cardboard or other fiber web, comprises atomization with an atomizing medium in a pneumatic atomizing nozzle
Inventor: KAHL PETER
IPC: D21H23/50
Filed: 2006-04-22
Abstract: The method for the production of atomized spray from an application medium for application on a moving paper, cardboard or other fiber web, comprises atomization with an atomizing medium (ZM) in a pneumatic atomizing nozzle that is implemented as a multiple-media nozzle (2) and addition of saturated steam to the multiple-media nozzle. An atomizing gas is used as atomizing medium and is mixed with the steam. The atomizing gas is mixed with the steam before the inlet into the multiple-media nozzle. The steam is supplied as atomizing medium to the multiple-media nozzle. The method for the production of atomized spray from an application medium for application on a moving paper, cardboard or other fiber web, comprises atomization with an atomizing medium (ZM) in a pneumatic atomizing nozzle that is implemented as a multiple-media nozzle (2) and addition of saturated steam to the multiple-media nozzle. An atomizing gas is used as atomizing medium and is mixed with the steam. The atomizing gas is mixed with the steam before the inlet into the multiple-media nozzle. The steam is supplied as atomizing medium to the multiple-media nozzle. The atomizing gas and a fresh water or condensed water are used as the atomizing medium and as the humidification medium. The atomizing gas is moistened with the saturated fresh water or condensed water. The humidification of the atomizing gas with the fresh water or condensed water takes place upstream to each of the multiple-media nozzles. The humidification of the atomizing gas with the fresh water or condensed water takes place in a central atomizing medium supply line, which is connected with a multitude of multiple-media nozzles. The humidification of the atomizing gas with the fresh water or condensed water takes place in the multiple-media nozzle. The atomizing gas is heated prior to the humidification and/or the atomizing gas saturated with moisture is cooled after humidification. A fresh water or condensed water is used as the only humidification medium or a further extra humidification medium. A double-media nozzle is used as multiple-media nozzle and fresh water or condensed water can be supplied to the multiple-media nozzle by means of an inlet for the application medium, alternately with the supply of the medium. The supply of fresh water or condensed water takes place during the interruption of the supply of the atomizing medium. The fresh water or condensed water can be supplied to the multiple-media nozzle, in addition to the medium. A triple-media nozzle is used as multiple-media nozzle. The atomizing medium, the fresh water or condensed water and the medium are simultaneously fed to the three-media nozzle over a separate inlet respectively and mixed. The atomizing medium and the fluid are atomized together in a first procedural step and in a further second procedural step the application medium is atomized into the formed atomizing medium/fluid mixture. The application medium is proportionately supplied to the triple-media nozzle. The fresh water or condensed water is supplied together to a multiple-media nozzle or a multitude of multiple-media nozzles. The mixing takes place in a mixing chamber (4), which is upstream to or integrated in the individual multiple-media nozzles and which is connected to a multiple of the multiple-media nozzles. The supply of the application medium and/or fresh water or condensed water is controlled. Air is used as an atomizing gas. The multiple-media nozzle or the media-transporting components of the multiple-media nozzle are cooled. An independent claim is included for a spray application device for application of cardboard- or paper web.