EP0568636B1 - Coke feed device for a coke dry cooling installation - Google Patents

Abstract

A coke feed device for the cooling shaft (41) of a coke dry cooling installation which consists of a stationary hopper with an extraction line (9), a liftable an lowerable lower hopper section (18) and a movable, liftable and lowerable cooling shaft closure (8) to which is allocated a manipulating device (14) with a drive. The stationary hopper (1) or the liftable and lowerable lower hopper section (18) is fitted with a distribution bell (5), a sealing ring (111) is secured to the liftable and lowerable lower hopper section (18) or a liftable and lowerable sealing ring (11) is allocated to the stationary hopper (1) and a sealing ring (55, 31) is secured to the movable liftable and lowerable cooling shaft closure (8, 800) and a drive (16, 19, 190; 71) is allocated to the distributor bell (5) and/or the liftable and lowerable lower hopper section (18) and/or the liftable and lowerable sealing ring (11, 111).

Description

The invention relates to a coke entry device for the cooling shaft of a coke dry cooling system, which consists of a stationary funnel with a suction line, a lowerable and lowerable funnel lower part and a movable and liftable and lowerable cooling shaft closure, to which a manipulation device with drive is assigned.

In this device, which is known from DE-PS 25 53 386, it is disadvantageous that grain separation takes place when charging the cooling shaft with the glowing coke, which leads to a disadvantageous uneven gasification of the coke bed in the cooling shaft. In this device, it is also disadvantageous that the lifting and lowering funnel is designed to be laterally manipulable and is arranged together with the cooling shaft closure on a common chassis, whereby a comparatively large amount of space is required. In particular, it is disadvantageous in this loading device that when the cooling shaft closure is lifted and the funnel that can be moved up and down is laterally moved, dust emissions can escape laterally past the stationary funnel into the atmosphere until the funnel closure has assumed its sealing position.

The invention has for its object to avoid these disadvantages and to simplify the generic coke entry device, at the same time to shorten the closing process for the movable funnel, to improve the gas flow through the coke bed and to significantly reduce the dust emissions.

This object is achieved in a generic coke entry device by the characterizing features of claim 1.

Advantageous further developments are listed in the subclaims.

The distributor bell arranged in the hopper of the coke input device according to the invention avoids separation phenomena in the cooling shaft when the glowing coke is filled. When filling without a distributor bell, segregation occurs in the coke bed of the cooling shaft, which hinders the gas flow.

In addition, with the coke input device according to the invention, with the exception of the variant in which a practically emission-free lateral displacement is possible according to the dry metal-to-metal sealing principle, the lateral evasive movement of the funnel lower part which can be moved up and down is eliminated. This reduces the design effort. At the same time, dust emissions are significantly reduced because the bottom part of the funnel, which can be moved up and down, leaves only a comparatively small gap. In addition, the funnel acts as a chimney fan due to the suction effect of the blower, so that the lateral intake of false air practically completely prevents dust emissions.

Figur 1

die Kokseintragsvorrichtung in einer Seitenansicht mit seitlich angeordneter Heb- und Senkvorrichtung für das Trichterunterteil mit Verteilerglocke;

Figur 2

den Gegenstand der Figur 1 in einer Stirnansicht in Füllstellung mit abgesenktem Trichterunterteil und Verteilerglocke;

Figur 3

den Gegenstand der Figur 1 mit angehobenem Trichterunterteil und Verteilerglocke sowie dem Trichterverschluß in Schließstellung und mit Manipulator;

Figur 4

den Gegenstand der Figur 3 mit Trichterverschluß in Ruhestellung;

Figur 5

eine Detailzeichnung des heb- und senkbaren Dichtrings des Trichterunterteils;

Figur 6

eine Detailzeichnung der Verteilerglocke und des Dichtrings mit Heb- und Senkvorrichtung;

Figur 7, 8, 9 und 10

eine andere Ausgestaltung des Gegenstandes der Figuren 1 bis 4 mit abgewandelter Heb- und Senk- vorrichtung und abgewandeltem Dichtring für Trichterunterteil und Verteilerglocke;

Figur 11

eine Detailansicht des Trichterunterteils mit Dichtring;

Figur 12, 13, 14 und 15

eine weitere Ausgestaltung des Gegenstandes der Figuren 7 bis 10 mit abgewandeltem stationären Trichter sowie Trichterunterteil mit Verteilerglocke;

Figur 16 und 17

in zwei Ansichten eine weitere Ausgestaltung der Kokseintragsvorrichtung mit abgewandeltem stationären Trichter und unterteiltem heb- und senkbaren sowie querverschieblichem Trichterunterteil und mit trockenen Metallabdichtungen;

Figur 18

eine Detailzeichnung des Gegenstandes der Figur 16 und 17 im Abdichtungsbereich;

Figur 19 und 20

eine Verschlußeinrichtung für den stationären Trichter in offener und geschlossener Stellung; und

Figur 21

eine Betätigungseinrichtung für den Gegenstand der Figuren 19 und 20.

The invention is described below with reference to the drawing. Show it:

Figure 1

the coke entry device in a side view with laterally arranged lifting and lowering device for the lower funnel part with distributor bell;

Figure 2

the object of Figure 1 in a front view in the filling position with lowered funnel lower part and distributor bell;

Figure 3

the object of Figure 1 with raised funnel lower part and distribution bell and the funnel closure in the closed position and with a manipulator;

Figure 4

the object of Figure 3 with funnel closure in the rest position;

Figure 5

a detailed drawing of the lifting and lowering sealing ring of the funnel lower part;

Figure 6

a detailed drawing of the distributor bell and the sealing ring with lifting and lowering device;

Figure 7, 8, 9 and 10

another embodiment of the object of Figures 1 to 4 with modified lifting and lowering device and modified sealing ring for the lower funnel and distributor bell;

Figure 11

a detailed view of the lower part of the funnel with sealing ring;

Figure 12, 13, 14 and 15

a further embodiment of the object of Figures 7 to 10 with a modified stationary funnel and lower part of the funnel with distributor bell;

Figures 16 and 17

in two views a further embodiment of the coke entry device with a modified stationary funnel and a subdividable, lowerable and transversely movable funnel lower part and with dry metal seals;

Figure 18

a detailed drawing of the object of Figures 16 and 17 in the sealing area;

Figure 19 and 20

a closure device for the stationary funnel in the open and closed position; and

Figure 21

an actuating device for the subject matter of FIGS. 19 and 20.

1 shows a stationary funnel 1, which is displaced in a support structure 7 and to which a lifting and lowering sealing ring 11 is assigned, which is at the same time designed as a lifting and lowering funnel lower part 18 and can be actuated by a drive unit 16. This also serves to raise and lower a distributor bell 5, which is connected to a cross member 39 via a pipe section 40, as can be seen from FIG. The support structures 7 and the drive unit 16 are supported and fastened on a platform 42, which is arranged at the level of the shaft head 51 on a cooling shaft 41.

A water cup 10 is provided on the shaft head 51 of the cooling shaft 41, into which the sealing ring 11 projects in the sealing position (FIG. 2). Suction lines 9 are arranged on the stationary funnel 1 (FIG. 2), to which suction fans (not shown here) are connected, which are operated when the hot coke is poured into the cooling shaft 41 in batches, and in the changeover times in which after the distributor bell 5 and Sealing ring 11 or funnel lower part 18, a cooling shaft closure 8 is brought from the rest position (FIG. 4) via a driving linkage 72 by means of rollers or wheels 68 into the sealing position above the cooling shaft 41 (FIG. 3). The cooling shaft closure 8 is inserted, lifted off and moved by means of a manipulator 14 which is arranged on the stage 42. In the sealing position of the cooling shaft closure 8, a sealing ring 55 attached to it is lowered into the water cup 10 (FIG. 3).

FIG. 5 shows the water cup 10 filled with water 13, into which the sealing ring 11 is immersed. The connection with the funnel 1 forms a flexible sealing element 12 that is supported against an annular collar 52 of the funnel 1.

FIG. 6 shows the drive unit 16 for lifting and lowering the distributor bell 5 and the sealing ring 11 in detail, which in the example is designed as a linear drive.

FIGS. 7 to 10 show another design of the lower and lowerable funnel part 18, which is assigned to the stationary funnel 1 displaced on the supporting frame 7 and at the same time also performs the function of a sealing ring 111. The distributor bell 5 is fixedly attached to the lower part 18 of the funnel via the pipe section 40 and the cross member 39. In the raised position (FIG. 9) there is sufficient space to manipulate the cooling shaft closure 8 from its rest position (FIG. 10) via the shaft head 51 of the cooling shaft 41 and to lower it there into its sealing position. In the example, the drive unit 19 for the lower part 18 of the funnel which can be raised and lowered is designed as a double thrust piston transmission, the pistons 71 of which are attached to a crossmember 17 to which the lower part 18 of the funnel is fastened. The drive unit 19 is supported against abutment 70 (Figure 8).

A water cup 10 is shown as a detail in FIG. 11, in the water filling 13 of which the sealing ring 111 fixedly attached to the lower funnel part 18 is inserted in the sealing position.

FIGS. 12 to 15 show an embodiment of the coke entry device which differs from that of the object of FIGS. 7 to 10 by an arrangement of the suction line 9 provided in the area of overlap of the stationary funnel 1 with the lower funnel part 18, the structural adaptations to the stationary funnel 1 and condition on the lower part 18 of the funnel, which relate to their external shape, as can be seen in detail in FIGS. 12 to 15.

16 to 18 show an embodiment of the coke entry device with a liftable and lowerable distributor bell 5, which is attached to a crossmember 17, which is guided up and down in guide openings 67 of the stationary funnel 1, which can be closed by sealing plates 34 , which are connected to the traverse 17. The lifting and lowering is carried out by drive units 190, which are attached to the ends of the crossmember 17 (FIG. 17).

The stationary funnel 1 is assigned a funnel lower part 18 which can be raised and lowered by a small stroke. In addition, this coke entry device has a displaceable funnel 202 and a displaceable cooling shaft closure 800. The displaceable funnel 202 and the displaceable cooling shaft closure 800 are displaced via a common drive. The drive is not shown in the drawing.

FIG. 16 shows the sliding cooling shaft closure 800 in the sealing position and the sliding funnel 202 in the rest position. Both the displaceable funnel 202 and the displaceable cooling shaft closure 800 carry on both sides metallic sealing rings 31 which correspond to corresponding metallic sealing rings 31 which are arranged on the shaft head 51 or in the lower region of the lower and lowerable funnel part 18. The metallic sealing rings 31 can be either armored or soft-sealing on their sealing side; cooling is optionally provided. To keep the metallic sealing rings 31 clean, there are nozzle ring lines 32 provided that are supplied with compressed air. In the rest position, the displaceable funnel 202 or the displaceable cooling shaft closure 800 can be guided in cover plates 35 and displaced in a resilient manner. Due to the use of the dry metal to metal sealing principle, practically no openings to the atmosphere through which dust emissions could escape in this area are free during the exchanges of the displaceable funnel 202 for the displaceable cooling shaft closure 800.

As can be seen from FIG. 18, a detailed illustration, the lower and lowerable funnel part 18 is configured in two parts in the example and is composed of a pressure ring 330 and a telescopic ring 333. The pressure ring 330 is equipped at the bottom with a metallic sealing ring 31 and at the top with a projection 331, to which a drive 332 is assigned, in the example a thrust piston gear mechanism, the piston 335 of which presses the pressure ring 330 onto the metallic sealing ring 31 of the displaceable cooling shaft closure 800 or the displaceable funnel 202 presses. The telescopic ring 333 is guided in the pressure ring 330 and has a compensator 334.

As shown by way of example in FIGS. 19, 20 and 21, the stationary hopper 1 of the coke entry device can be equipped with a hopper closure 20 which consists of two closure plates 64 and 65, which are shown in FIG. 19 in the open position and in FIG. 20 in the closed position . In the spatial representation of FIG. 21, the closure plate 64 is fastened to a lever linkage 66 which can be actuated via a drive 21.

REFERENCE SIGN LIST

1

stationary funnel

202

sliding funnel

5

Distribution bell can be raised and lowered

7

Support structure

8th

Cooling shaft lock

800

sliding cooling shaft lock

9

Suction line

10th

Water cup

11

seal ring that can be raised and lowered

111

seal ring that can be raised and lowered

12th

flexible sealing element

13

water

14

manipulator

16

Drive unit for lifting and lowering the distributor bell and the sealing ring

17th

Crossbeam for distribution bell or cone

18th

lower and lower funnel part

19th

Drive unit for the lower and lower funnel part

190

Drive unit for lifting and lowering distributor bell

20th

Funnel closure

21

Drive unit for funnel closure

31

metallic sealing ring

32

Nozzle ring line

34

Sealing plates

35

Cover plate

330

Pressure ring

331

Cantilever

332

drive

333

Telescopic ring

334

Compensator

335

piston

39

Cross member

40

Pipe piece

41

Cooling shaft

42

stage

51

Shaft head

52

Ring collar

55

Sealing ring

64

Locking plate

65

Locking plate

66

Lever linkage

67

Guide openings

68

Wheel or roller

70

Abutment

71

piston

72

Driving linkage

Claims (7)

1. A coke feed device for the cooling shaft of a coke dry cooling installation, comprising a stationary hopper with a suction line, a raisable and lowerable hopper lower part and a displaceable and raisable and lowerable cooling shaft closure with which is associated a manipulating device with a drive, characterised in that the stationary hopper (1) or the raisable and lowerable hopper lower part (18) is provided with a distributor bell (5), a sealing ring (111) is fixed to the raisable and lowerable hopper lower part (18) or a raisable and lowerable sealing ring (11) is associated with the stationary hopper (1), and a sealing ring (55, 31) is fixed to the displaceable and raisable and lowerable cooling shaft closure (8, 800) and a drive (16, 19, 190; 71) is associated with the distributor bell (5) and/or the raisable and lowerable hopper lower part (18) and/or the raisable and lowerable sealing ring (11, 111).
2. A coke feed device according to claim 1, characterised in that the distributor bell (5) is fixed to a pipe piece (40) which is carried by a cross-member (39) which is fixed in the stationary hopper (1) or in the raisable and lowerable hopper lower part (18).
3. A coke feed device according to claim 1, characterised in that the drive (16) for the raisable and lowerable distributor bell (5) and the raisable and lowerable sealing element (11, 18) is formed as a linear drive.
4. A coke feed device according to claim 1, characterised in that the drive (19, 71) for the raisable and lowerable hopper lower part (18, 111) is formed as a thrust piston transmission (19, 71) with a crossbeam (17).
5. A coke feed device according to claim 1, characterised in that the stationary hopper (1) is provided with a hopper closure (20).
6. A coke feed device according to claim 5, characterised in that the hopper closure (20) comprises two closing plates (64, 65), with each of which is associated a drive (21) and lever rods (66).
7. A coke feed device according to claim 1, characterised in that a raisable and lowerable first hopper lower part (18) is mounted on the stationary hopper (1) and comprises a telescopic ring (333) and a pressure ring (330) with a drive (332) and a metal sealing ring (31), and the latter cooperates in a sealed manner with an upper metal sealing ring (31) of a displaceable cooling shaft closure (800) or an upper metal sealing ring (31) of a displaceable second hopper lower part (202), and the displaceable cooling shaft closure (800) or the displaceable second hopper lower part (202) each have a lower metal sealing ring (31) which cooperates in a sealed manner with a metal sealing ring (31) fixed to the shaft head (51).

Images