Patent EP-1886974-A2 (EP)
Inventor: FREIGEBER JUERGEN
IPC: C02F1/28
Filed: 2007-07-30
Abstract: The device for the neutralization of acidic combustion condensates, comprises neutralization tanks having a sieve plate (5) for holding a neutralization medium, which is flowed through by the condensate, a sludge sedimentation chamber (30) mounted below the sieve plate and arranged upstream to the neutralization tank for the suspended particles/other solids that are contained in the condensate to be treated, and sludge sedimentation tanks arranged beneath the sieve plate separated from one another by a partition wall that runs perpendicular to the flow direction of the condensate. The device for the neutralization of acidic combustion condensates, comprises neutralization tanks having a sieve plate (5) for holding a neutralization medium, which is flowed through by the condensate, a sludge sedimentation chamber (30) mounted below the sieve plate and arranged upstream to the neutralization tank for the suspended particles/other solids that are contained in the condensate to be treated, sludge sedimentation tanks arranged beneath the sieve plate separated from one another by a partition wall that runs perpendicular to the flow direction of the condensate, a cover plate lying on the longitudinal tank walls (2.3, 2.4) in sealing manner, a condensate inlet chamber arranged upstream to the terminal tank walls having the condensate inlet, a condensate outlet chamber (12) arranged downstream to the terminal tank walls having the condensate outlet, an external housing, in which neutralization tanks are inserted in such a manner that they are dismounted individually/in groups, a condensate inlet line flowing into the sedimentation chamber, an activated carbon filter unit, a filter housing with a condensate inlet that is present in its bottom region and a condensate outlet in its upper region, and a neutralization unit, which attaches itself to the activated filter unit and has a neutralization chamber with a condensate inlet that is present in its lower region for the condensate leaving the activated carbon filter unit. The condensate inlet and outlet are arranged closely above the sieve plate at the tank walls that form the terminal tank walls and are shorter than the longitudinal tank walls, which run along the flow direction of the condensate and between which a transverse wall is placed. The transverse wall has a passage closely arranged above the sieve plate for condensate flow. The bottom edges of the terminal walls and the transverse walls lie at a distance above the sieve plate. The upper edges of the transverse walls lie at a distance below the cover plate. The upper edge region of the terminal walls has a passage for the condensate flow. The neutralization tanks lie sequentially one after another in a parallel manner in such a manner that the condensate outlet side of a neutralization tank lies close to the condensate inlet side of a following neutralization tank. The outlet chamber of each neutralization tank is connected with the inlet chamber of the following neutralization tank in such a manner that the condensate flows through the sequentially following neutralization tanks in a meander path. Each of the outlet chambers is connected with the following inlet chamber by an opening that is present in the lower chamber region. An inlet chamber wall is formed by the directed lateral wall of the external housing and outlet chamber wall is formed by an intermediate wall (4). The upper wall region of the sedimentation tank has an opening in the form of an overflow weir, to which an intermediate chamber attaches. The lower wall region of the intermediate chamber has a passage for condensate flow. The passage is connected with the inlet chamber, which is arranged upstream to the terminal wall of the neutralization tank, which is intended with the condensate inlet. The passage of the intermediate chamber flows into a downstream preliminary chamber of an activated carbon filter unit, whose upper wall region has an overflow weir. The activated carbon filter unit comprises an activated carbon filter, whose inlet and outlet are arranged in such a manner that the condensate flows through the activated carbon filter upwardly from the bottom. The device has an additional neutralization tank, which has a single sieve plate lying above its bottom and is filled with the neutralizing medium. The upper side of the additional neutralization tank has condensate inlet and outlet, which lies below the sieve plate and at the side of the tank that lies opposite to the condensate inlet. The external tank has a collecting channel for purified/neutralized condensate that flows into an outlet chamber, to which a condensate outlet line attaches itself. The inlet line has a line or pipeline attachment that flows out at the bottom of the sedimentation chamber for the production of a siphon effect. The sizes of each neutralization tanks, the activated carbon filter unit and/or the additional neutralization tank are adapted and matched in such a manner that they are mounted into the external housing in such a manner that they are replaced in a modular manner. A cubical activated carbon filter is arranged upstream to a neutralization tank and whose side has a lower condensate inlet opening that is closed by a sieve, and whose oppositely-placed other side has an upper condensate outlet opening that is closed by a sieve and is provided in its interior with partition walls in such a manner that the condensate flows through the additional activated carbon filter. The neutralization unit comprises sequentially arranged neutralization chambers with partition walls having overflow openings that are designed in such a manner that the condensate inlet occurs in each of the chambers through the respective openings present in the lower partition wall region. The sedimentation chamber is arranged upstream to the activated carbon filter unit and has an overflow that is upstream to the activated carbon unit. The bottom region of the filter housing of the activated charcoal filter has a lateral recess as condensate inlet and the upper region of the filter housing of the activated charcoal filter has another lateral recess as condensate outlet. The activated carbon filter is mounted by an O-ring between the external wall of the activated carbon filter and the interior wall of the filter housing.