Patent EP-2377609-A1 (EP)
Inventor: PESCHL ALEXANDER
IPC: B01J19/12
Filed: 2011-03-31
Abstract: The modular photo-tube reactor for photochemical treatment of fluid media, comprises a central axial irradiation unit, which contains a radiation source (2), is coaxially surrounded by a reactor wall and has an annular gap between the reactor wall and the radiation unit that provides an irradiation volume. The annular gap is connected to a head piece (1) of the tube reactor with a fluid inlet (6) and a bottom nozzle of the tube reactor with a fluid outlet (7). The reactor wall is provided by two or more cylindrical reactor segments (4). The modular photo-tube reactor for photochemical treatment of fluid media, comprises a central axial irradiation unit, which contains a radiation source (2), is coaxially surrounded by a reactor wall and has an annular gap between the reactor wall and the radiation unit that provides an irradiation volume. The annular gap is connected to a head piece (1) of the tube reactor with a fluid inlet (6) and a bottom nozzle of the tube reactor with a fluid outlet (7). The reactor wall is provided by two or more cylindrical reactor segments (4) and an annular disk-shaped intermediate flange is arranged between two adjacent reactor segments. An interior diameter of the ring disk is equally large like an interior diameter of the reactor segment, and gas channels are provided in a disk plane of the intermediate flange. The gas channels provided in the disk plane of the intermediate flange extend itself by an intermediate flange-outer circumference in direction of an intermediate flange-inner circumference and flow tangentially. The fluid inlet is provided in fluid channel tangentially flowing into the annular gap existing in the head piece and/or fluid outlet is provided in fluid channel tangentially flowing into the annular gap existing in the base piece. The irradiation unit has a cladding tube, which surrounds the radiation source. The cladding tube consists of a material, which is transparent to the radiation in a wave length area and is provided for the photo chemical treatment. The material is a synthetic quartz, a natural quartz, a borosilicate glass and/or other suitable glass material. The radiation source is UV-radiation source and is selected from the group such as a mercury low pressure lamp, medium pressure mercury lamp, high pressure mercury lamp, low pressure sodium lamp, medium-pressure sodium lamp, high-pressure sodium lamp, xenon lamp, dielectrically hindered discharge lamp radiation, an excimer lamp and light emitting diode array. The intermediate flange and the head piece and the base piece have holes, which pass parallel to the central axis of the irradiation unit outside the reactor wall. The head piece and the intermediate flange, and the base piece and the intermediate flange and/or the intermediate flange adjacent to each other form mounting pairs, whose holes lie to each other in a mounting arrangement of the photo-reactor congruent to each other. The head piece and base piece are two parts and comprise a tangential connection piece and a holding ring, which has bores, where the holding ring is arranged between the tangential connection piece and the reactor segment. A spiral baffle is arranged in the annular gap that partially extends itself along the length of the annular gap. The spiral baffle is fixed through a gas inlet tube in the annular gap. The photo-tube reactor is arranged horizontally or vertically on the holding tube.