COMBUSTION INSTALLATION HAVING AT LEAST ONE INTERFERING ELEMENT REMOVAL MEANS IN THE CONVEYOR LINE FOR THE COMBUSTION RESIDUES

Abstract

A combustion installation has a combustion chamber for the combustion of a fuel, wherein combustion residues of the fuel combusted in the combustion chamber are fed, via an outlet of the combustion chamber, to a crusher for the purpose of comminuting the combustion residues, and at least one interfering element removal means is arranged in a conveyor line for the combustion residues, by means of which interfering elements that are conveyed in the combustion residues but cannot be comminuted by the crusher can be removed via an interfering element removal opening.

Claims

1. A combustion plant having a combustion space for combustion of a fuel, wherein combustion residues of the fuel burnt in the combustion space are suppliable via an outlet from the combustion space to a crusher for comminution of the combustion residues and wherein, by means of at least one blocking body remover disposed in a conveying zone for the combustion residues, blocking bodies that have been entrained in the combustion residues and are not comminutable by the crusher are removable from the conveying zone via a blocking body removal opening.

2. The combustion plant as claimed in claim 1, wherein the at least one blocking body remover comprises a first grid at least partly disposed in the conveying zone for the combustion residues and wherein the blocking bodies are separable from the combustion residues by means of the first grid.

3. The combustion plant as claimed in claim 2, wherein the first grid for removal of the blocking bodies is at least partly tiltable or movable by the blocking body removal opening.

4. The combustion plant as claimed in claim 1, wherein the at least one blocking body remover comprises at least one first crusher element of the crusher, wherein the combustion residues are comminutable with the at least one first crusher element and wherein the at least one first crusher element is movable to clear the blocking body removal opening.

5. The combustion plant as claimed in claim 1, wherein the at least one blocking body remover comprises a slider and wherein the blocking bodies are removable through the blocking body removal opening with the slider.

6. The combustion plant as claimed in claim 5, wherein the crusher includes a second crusher element that cooperates with the at least one first crusher element in the comminution of the combustion residues.

7. The combustion plant as claimed in claim 6, wherein the blocking bodies are removable through the blocking body removal opening with the second crusher element.

8. The combustion plant as claimed in claim 3, wherein the crusher includes at least one second grid by which the blocking bodies are separable from the combustion residues.

9. The combustion plant as claimed in claim 1, wherein there is at least one opening in the region of the at least one blocking body remover across the conveying zone.

10. The combustion plant as claimed in claim 1, including a mobile receiving container to receive the blocking bodies removed through the blocking body removal opening.

Description

[0024] The invention and the technical field are explained in detail hereinafter with reference to the figures. It should be pointed out that the figures show particularly preferred embodiments of the invention, but the invention is not limited thereto. Identical components in the figures are given the same reference numerals. The figures show, by way of example and in schematic form:

[0025] FIG. 1: a first embodiment of the combustion plant with a closed blocking body removal opening;

[0026] FIG. 2: the first embodiment of the combustion plant with an open blocking body removal opening;

[0027] FIG. 3: a second embodiment of the combustion plant with an open blocking body removal opening;

[0028] FIG. 4: a third embodiment of the combustion plant with a closed blocking body removal opening; and

[0029] FIG. 5: the third embodiment of the combustion plant with a closed blocking body removal opening.

[0030] FIG. 1 shows a combustion plant 1 with a combustion space 2, in which a fuel (not shown here) is combustible. The combustion residues 3 that result from the combustion of the fuel in the combustion space 2 are suppliable via an outlet 4 from the combustion space 2 along a conveying zone 6 to a crusher 5 and a conveyor 18. The combustion residues 3 are conveyed along the conveying zone 6 with the aid of gravity. The combustion residues 3 are comminuted by the crusher 5 and then transported away by the conveyor 18. The conveyor 18 has a circulating conveyor belt with an upper strand 19 and a lower strand 20. The conveyor is at least partly surrounded by a housing 21 and especially connected in an essentially gastight manner to the combustion space 2. Blocking bodies 8 are entrained with the combustion residues 3 and are not comminutable by the crusher 5 owing to their hardness and/or size. The combustion plant 1 therefore has a blocking body remover 7 which, in the first embodiment shown here, takes the form of a first grid 10 disposed in the conveying zone 6 for the combustion residues 3 between the outlet 4 of the combustion space 2 and the crusher 5.

[0031] As shown in FIG. 2, the grid 10 of the blocking body remover 7 is withdrawable laterally from the conveying zone 6 for the combustion residues 3 through a blocking body removal opening 9 formed in a wall 23 surrounding the conveying zone 6. In the withdrawn position, the blocking bodies 8 that have been filtered out of the combustion residues 3 by the first grid 10 can be removed without needing to shut down or run down the combustion plant.

[0032] FIG. 3 shows a second embodiment of a combustion plant 1 that differs from the first embodiment of the combustion plant 1 in that the blocking body remover 7 has a first grid 10 tiltable or pivotable about a pivot axis 25. As a result, the first grid 10 forms an oblique plane, such that the blocking bodies 8 can slide through the blocking body removal opening 9, which is open here, out of the conveying zone 6. The blocking body removal opening 9 can be closed by a flap (not shown here).

[0033] FIG. 4 shows a third embodiment of a combustion plant 1 that differs from the first and second embodiments of the combustion plant 1 in that the blocking body remover 7 comprises a first crusher element 11 of the crusher 5. The crusher 5 here takes the form of a jaw crusher and comprises a first crusher jaw as first crusher element 11 and a second crusher jaw as second crusher element 13, between which the combustion residues 3 are comminutable. In addition, the crusher 5 has a second grid 14 which is disposed directly beneath the first crusher element 11 and the second crusher element 13 and which separates the blocking bodies 8 from the remaining combustion residues 3. The crusher 5 is shown here in a normal operating position in which the first crusher element 11 is in a locked position, the second crusher element 13 can be made to vibrate, for example by means of an eccentric shaft (not shown here) or a hydraulic cylinder and/or by a simple drive and in which the combustion residues 3 are comminutable by the crusher 5. It should be made clear here that the second embodiment of the combustion plant 1 does not have a first grid 10 in the conveying zone 6 for the combustion residues 3, even though this is possible in principle.

[0034] FIG. 5 shows the third embodiment of the combustion plant 1 after a blocking body removal opening 9 has been opened by lateral movement or displacement of the first crusher element 11 in a horizontal direction, such that the blocking bodies 8 are removable from the second grid 14 out of the crusher 5 by the second crusher element 13, in the form here of a slider 12. It should be made clear that the first crusher element 11 can also be designed in a vertical direction and/or in pivotable form. The second crusher element 13 is movable along the second grid 14 in the direction of the blocking body removal opening 9 by means of at least one hydraulic cylinder 24, such that the blocking bodies 8 fall through the blocking body removal opening 9 and a chute 22 into a receiving container 16. Both the chute 22 and the receiving container 16 have a mobile configuration. For this purpose, the chute 22 is secured to the receiving container 16 and movable therewith. Subsequently, the first crusher element 11 and the second crusher element 13 return to their starting position or locked position. Above the crusher 5 there is an opening 15 disposed in the wall 23 in a shaft beneath the outlet 4 from the combustion space 2, which is closed here by means of a flap 17. Through the opening 15, the blocking bodies 8 can be moved manually on the second grid 14, for example by means of a mechanical aid, in the direction of the blocking body removal opening 9.

[0035] It should be pointed out by way of precaution that the features of the embodiments shown in the figures can be individualized and/or combined with one another, unless this has been explicitly ruled out. This is especially true with regard to the features relating to the first grid and/or to the crusher.

[0036] It is a particular advantage of the present invention that blocking bodies can be removed in normal operation of a combustion plant without having to shut down the combustion plant.

LIST OF REFERENCE NUMERALS

[0037] 1 combustion plant [0038] 2 combustion space [0039] 3 combustion residues [0040] 4 outlet [0041] 5 crusher [0042] 6 conveying zone [0043] 7 blocking body remover [0044] 8 blocking body [0045] 9 blocking body removal opening [0046] 10 first grid [0047] 11 first crusher element [0048] 12 slider [0049] 13 second crusher element [0050] 14 second grid [0051] 15 opening [0052] 16 receiving container [0053] 17 flap [0054] 18 conveyor [0055] 19 upper strand [0056] 20 lower strand [0057] 21 housing [0058] 22 chute [0059] 23 wall [0060] 24 hydraulic cylinder [0061] 25 pivot axis