Patent DE-102007023085-A1 (DE)
Title: Device for the production of aqueous chlorine dioxide, comprises a reactor with reaction area, and level determination device having switching point that is operationally coupled with a control unit
Inventor: GUNZMANN FRANZ
IPC: C01B11/02
Filed: 2007-05-16
Abstract: The device for the production of aqueous chlorine dioxide, comprises a reactor with reaction area (13), which is fluidically connected with a reception area (14) for the aqueous chlorine dioxide, a first level determination device arranged in the reaction area, a second level determination device arranged in the reception area, a fluidic connection arranged between the reception area and the reaction area by a transfer device (20) for supplying fluid reactants into the reaction area, and a pressure balance device arranged between the reception area and the reaction area. The device for the production of aqueous chlorine dioxide, comprises a reactor with reaction area (13), which is fluidically connected with a reception area (14) for the aqueous chlorine dioxide, a first level determination device arranged in the reaction area, a second level determination device arranged in the reception area, a fluidic connection arranged between the reception area and the reaction area by a transfer device (20) for supplying fluid reactants into the reaction area, and a pressure balance device arranged between the reception area and the reaction area. The first device is directly contacted with the supplying fluid for level determination in the reaction area. The level determination devices have switching points operationally coupled with a control unit. The supply of the fluid reactants in the reaction area is regulated and sequentially operatable. The reception area is arranged directly under the reaction area. The second level determination device is directly contacted with the chlorine dioxide. The transfer of the chlorine dioxide from the reaction area is adjustable in the reception area. The transfer device has an internal tube and an external tube coaxially surrounding the internal tube. The internal and the external tubes are arranged vertically to a ground of the reaction area. The internal tube is entered into the bottom of the reaction area and opens itself in the reception area. The external tube is concentrically arranged around the internal tube and is arranged at the upper end of the external tube with a closure (23). A first slit with a width is arranged between the tubes. The chlorine dioxide led into in the slit through lifting force. The closure of the external tube is connected with the upper end of the internal tube. The external tube is supported by the internal tube. A second slit exists between lower ends of the external tube and is arranged at the bottom of the reaction area. The reaction product enters through the second slit into the first slit between the tubes. The internal tube comprises an overflow opening, which is provided at the upper end of the internal tube by a cross drill. The aqueous chlorine dioxide is transported from the first slit through the overflow opening and the internal tube into the reception area, which has an outlet for the aqueous chlorine dioxide. Each reactant is provided in a corresponding reservoir that is fluidically connected with the reaction area. A conveyor is operationally connected with the reservoir for conveying the reactants into the reaction area and is driven by the control unit, which shows a time control function. The conveyor is a membrane pump, a piston pump, a hose pump, rotary pump, a gear pump or magnetic valve with reservoirs. The level determination device is a magnetic, optical or capacitive operational device and comprises a float and a float lance, which are arranged in the switching point. The float lance comprises electric contacts that communicate with a magnet arranged in the float. A signal is transmittable at the control unit during managing the switching point for effecting an operation of the control unit. The reaction area comprises tube lances (50) for supplying the reactants. The tube lances comprise lance nozzles having the cross drill. The tube lances has different lengths. The length of the tube lance for water is greater than the length of the tube lance for hydrochloric acid, which is greater than the length of the tube lance for sodium chlorite. The pressure balance device has a ventilation pipe and an activated carbon filter connected with volume storage. Independent claims are included for: (1) chlorine dioxide plant; and (2) procedure for the production of aqueous chlorine dioxide.