Patent DE-102009023314-A1 (DE)
Title: Device for the treatment of ballast water with acrolein, where the device is connected to main ballast water line of a ballast water device, comprises a reactor device in which acrolein derivative and water are supplied
Inventor: BLUM HOLGER
IPC: C02F1/50
Filed: 2009-05-29
Abstract: The device for the treatment of ballast water with acrolein, where the device is connected to main ballast water line (2) of a ballast water device, comprises a reactor device in which acrolein derivative and water are supplied for the production of aqueous acrolein solution, a branch line that is connected with the main ballast water line for splitting ballast water partial stream, a mixing device that is connected with the branch line and an acrolein solution-supply line from reactor device and is laid out for diluting the acrolein solution from the reactor device, and a supply device. The device for the treatment of ballast water with acrolein, where the device is connected to main ballast water line (2) of a ballast water device, comprises a reactor device in which acrolein derivative and water are supplied for the production of aqueous acrolein solution, a branch line that is connected with the main ballast water line for splitting ballast water partial stream, a mixing device that is connected with the branch line and an acrolein solution-supply line from reactor device and is laid out for diluting the acrolein solution from the reactor device, and a supply device for supplying the aqueous acrolein solution from the mixing device to the main ballast water line. The reactor device comprises a generator (46), a connection support for acrolein derivative, a connection support for pure water and a connection support for acrolein solution and the volume of the reactor device is laid out in order to place a retention time of the acrolein solution in hose reactor in which the solution of the acrolein derivative is contained in the water. The generator comprises a box-like container with a volume of 4-6 liter. The hose reactor is in the form of single-layered cylindrical coil and has a half hose winding. The hose of the hose reactor has length of 30-40 m and an interior diameter of 20-40 mm. The hose reactor consists of plastic such as polyethylene or polytetrafluoroethylene. The hose reactor is equipped with steel reinforcements. The mixing device comprises a pressure increasing pump, and a mixing nozzle with an inlet cone, which tapers itself in flow direction and has an inlet support for the connection of pressure water line, with an outlet cone, which widens itself in flow direction and has an outlet support for the connection of inlet line for the supply of aqueous acrolein solution from the mixing device to a determination sort, and/or with a suction support flowing in a low pressure area of the mixing nozzle. The suction support is connected with the acrolein solution supply line from a reactor device for the production of acrolein solution. The pressure increasing pump is arranged by the mixing nozzle and is connected with the ballast water-line that is a branch pipe of main ballast water line for partial stream of the ballast water. The pipeline of the pressure increasing pump is dimensioned in dependent upon the constriction of the inlet cone of the mixing nozzle so that a water flow speed is reached to 20-25 m/sec in nominal capacity of the pressure increasing pump in the area of the mixing nozzle between the inlet cone and the outlet cone. The pressure increasing pump is laid out on a power of 45 kW in a flow-rate of 500 m 3>/h and a flow speed of 2-3 m/sec in an inlet line and an outlet line of the pressure increasing pump. The inlet cone of the mixing nozzle has a cone angle of 20 grades and the outlet cone has a cone angle of 10 grades. The inlet cone has a diameter ratio in the flow direction of inlet to outlet of 1:2. The diameter of the inlet cone at its inlet and the diameter of the outlet cone at its outlet are larger than the diameter of the connecting tube lines. The mixing nozzle has a further suction support that is connected with a tank for a decomposition accelerator over a tube line. An intermediate piece is equipped between the inlet cone and the outlet cone and has a suction support for the acrolein solution, and the suction support for the decomposition accelerator. A separation device serving for physical separation of suspended solid materials of the ballast water partial stream is equipped in the ballast water branch-line, where the separation device is arranged in the flow direction of the ballast water before the mixing nozzle. The separation unit comprises a centrifugal force precipitator and/or a mud filter. The supply device comprises a ring nozzle (4) that is arranged in the main ballast water line, where the ring nozzle comprises a nozzle ring that has nozzle openings (6) distributed over an internal circumference of the nozzle ring. The nozzle openings are arranged under same interval over the interior circumference of the ring nozzle. The interior diameter of the ring nozzle is adapted to the interior circumference of the main ballast water line. The supply device comprises flow-interference device arranged on the ring-nozzle, where the flow-interference device lies in the direction of main ballast water stream flowing in the main ballast water line from the ring nozzle. The flow-interference device comprises a mixing blend with a transition opening for the main ballast water stream, where the transition opening has small open surface than the free interior cross-sectional area of the main ballast water line. The transition opening is in circular form. The inlet line of the ring nozzle is formed as injector line that is arranged tangential to the ring nozzle. An independent claim is included for a method for the treatment of ballast water with acrolein.