DEODORIZING DEVICE FOR WASTE AIR FROM HOT AIR TREATMENT PLANTS FOR FOODSTUFF AND/OR ANIMAL FEED

Abstract

A deodorizing device for waste air from hot air treatment plants for foodstuff and/or animal feed, having a treatment unit with a housing which has a treatment chamber that can be flowed through and is arranged between at least one waste air intake connection and at least one waste air outlet connection. At least one capacitor element and an activated carbon filter element are arranged in the cross-section, which can be flowed through. At least one fresh air supply line opens into the treatment chamber, wherein the cross-section of the fresh air supply line that can be flowed through can be changed and/or closed by means of a motor-driven control valve. At least one filter element is also arranged downstream of the opening of the fresh air supply line into the treatment chamber.

Claims

1. A deodorizing device for waste air from hot air treatment plants for foodstuff and/or animal feed, the deodorizing device comprising: a treatment unit having a housing that has a treatment chamber adapted to be passed through by a flow and being disposed between at least one waste air intake port and at least one waste air outlet port, wherein at least one condenser element and an activated carbon filter element being disposed in the cross section of the treatment unit that is adapted to be passed through by the flow; a ventilator unit to direct the waste air through the treatment unit; at least one fresh air intake line opening into the treatment chamber, a cross section of the fresh air intake line being adapted to be passed through by the flow is variable and/or closable via a motor-driven adjustment valve; and at least one filter element disposed downstream of the opening of the fresh air intake line into the treatment chamber.

2. The deodorizing device as claimed in claim 1, wherein the condenser element is connected to a cooling circuit.

3. The deodorizing device as claimed in claim 1, wherein at least one pre-filter element is disposed ahead of the activated carbon filter element in the treatment unit.

4. The deodorizing device as claimed in claim 1, wherein at least one droplet separator element is disposed ahead of the activated carbon filter element in the treatment unit.

5. The deodorizing device as claimed in claim 1, wherein the ventilator unit is disposed upstream so as to be below the treatment chamber.

6. The deodorizing device as claimed in claim 1, wherein the ventilator unit comprises air-guiding parts and at least one fan which are composed of polypropylene.

7. The deodorizing device as claimed in claim 1, wherein a waste stack is connected to the waste air outlet port.

8. The deodorizing device as claimed in claim 7, wherein at least one deaeration unit having a further ventilator unit is disposed in a profile of the waste stack.

9. The deodorizing device as claimed in claim 1, wherein ventilator units that are disposed upstream and downstream of the treatment unit are connected to a common closed-loop control unit.

10. The deodorizing device as claimed in claim 9, wherein a motorized adjustment valve that is connected to the closed-loop control unit is provided for varying the cross section of the fresh air intake line.

11. The deodorizing device as claimed in claim 1, wherein at least one sensor for measuring a substance concentration is disposed in the profile of the waste stack.

12. A method for cleaning waste air from hot air treatment plants for foodstuff and/or animal feed by means of a deodorizing device as claimed in claim 1, the method comprising: suctioning the waste air from at least one hot air treatment plant via the ventilator unit; guiding an air flow that contains the suctioned waste air through at least one air-cooled or liquid-cooled condenser element that is disposed in the treatment unit; separating gaseous and vaporous proportions of the waste air by condensation on the condenser element, and discharging the gaseous and vaporous proportions in liquid form to the outside; injecting the waste air pre-filtered and cooled in the condenser element into the treatment chamber; diluting the waste air by directing fresh air into the treatment chamber; and extracting the diluted waste air.

13. The method as claimed in claim 12, wherein ventilator units that are disposed upstream and downstream of the treatment unit by way of a closed-loop control unit are coupled to one another in such a manner that a laminar air flow is achieved in the volumetric flows which are in each case conveyed through the ventilator units.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitive of the present invention, and wherein:

[0029] FIG. 1 shows a deodorizing device in a schematic lateral view;

[0030] FIG. 2 shows the treatment unit in a perspective view;

[0031] FIG. 3 shows the partially opened and sectioned treatment unit without the upper part;

[0032] FIG. 4 shows the treatment unit with an insert element which has been partially pulled out; and

[0033] FIG. 5 shows a filter unit.

DETAILED DESCRIPTION

[0034] FIG. 1 shows a deodorizing device in a schematic lateral view. A plurality of pipelines 51, 52 which are connected to ventilation openings of various hot air treatment plants for foodstuff and/or animal feed are disposed in the lower region. The pipelines 51, 52, 53 combine so as to form a common intake line which is connected to a ventilator unit 50. The ventilator unit 50 in turn is connected directly to a waste air inlet port 12 of a treatment unit 10 which moreover has a waste air outlet port 22 on the upper side. A fresh air intake line 30 leads laterally into the treatment unit 10. A waste stack 40 which comprises a first sub-portion 41 and a second sub-portion 42 adjoins above the waste air outlet port 22. A deaeration unit 43 which likewise contains at least one ventilator is disposed therebetween.

[0035] The treatment unit 10 is illustrated in a perspective view in FIG. 2. Said treatment unit 10 is composed substantially of a housing 11 having the waste air inlet port 12 and a fresh air intake line 30 which opens laterally into the housing 11. The cross section of the housing 11 is open toward the top. The filter housing 20 which toward the top tapers so as to form a waste air outlet port 22 adjoins the housing 11 directly in the exemplary embodiment illustrated.

[0036] A maintenance flap 13 by way of which the treatment chamber on the inside is accessible is provided in a lateral wall in the housing 11 of the treatment unit 10. Two drawer-type insert elements 14 into which filter elements are inserted are provided thereabove.

[0037] FIG. 3 shows the partially opened and sectioned treatment unit 10 without the upper part, thus without the filter unit. A condenser element 15 is inserted in the treatment chamber 18 in the interior of the housing 11.

[0038] FIG. 4 again shows the treatment unit 10 having an insert element 14 which has been partially pulled out. A droplet separator element 17 is disposed in the insert element 14. An additional pre-filter 16 is placed on the condenser element 15 so as to be below the insert element 14, said condenser element 15 not being visible here.

[0039] FIG. 5 shows a filter unit 20 having the housing 21 and the waste air outlet port 22, wherein the housing wall is partially cut out such that the filter elements 23 lying therebehind are visible. Said filter elements 23 are tubular filter elements 23 having an activated carbon layer which can be passed through by a flow.

[0040] The invention being thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications as would be obvious to one skilled in the art are to be included within the scope of the following claims.