WO2015036071A1 - Method and device for filling a coke oven chamber of a coke oven - Google Patents

Abstract

The invention relates to a method and to a device for filling a coke oven chamber of a coke oven. A coal filling cart that can be moved on the top side of the coke oven is positioned at a filling hole (5), which is arranged in the ceiling (6) of the coke oven chamber (8) and which is closed by means of a filling-hole cover (4). The filling-hole cover (4) is lifted off, and a connection between a coal dispensing apparatus (1) of the coal filling cart and the filling hole (5) is established by means of a filling telescope (2) lowered onto the open filling hole (5). The coal is poured into the coke oven chamber (8) through the filling telescope (2) and the filling hole (5). Finally, the filling telescope (2) is lifted off of the filling hole (5), and the filling hole (5) is closed again by means of the filling-hole cover (4). According to the invention, after the coke oven chamber (8) has been filled, the filling hole (5) is at least partially closed by means of a closing element (7) before the filling telescope (2) is lifted off of the filling hole (5). The filling-hole cover (4) is inserted into the filling hole (5), which is at least partially closed by the closing element (7).

Description

 14 002070

 1

Method and device for filling a coke oven chamber

 coke oven

Description:

The invention relates to a method and a device for filling a coke oven chamber of a coke oven.

In the method embodying the invention, a charcoal trolley movable at the top of the coke oven is positioned at a filling hole located in the furnace top of the coke oven chamber and sealed with a fill hole lid. The fill hole lid is lifted off and a filling telescope is lowered onto the opened fill hole to establish communication between a coal discharge means of the carbon filler truck and the fill hole. The coal is filled through the filling telescope and the filling hole in the coke oven chamber. Subsequently, the filling telescope is lifted from the filling hole and the filling hole is closed again with the filling hole cover.

The coking of coal is carried out cyclically. After coking, the coke is removed by means of a squeezing machine from the coke oven chamber and brought by means of a Überleitmaschine in a fire truck. Several coke oven chambers are combined to form a coke oven, sometimes referred to as a coke oven battery.

When Koksofenbefüllung arise due to the contact of the sometimes relatively humid coal with the hot furnace walls large amounts of filling gases. The filling gases are aspirated by suitable means from the coke oven chamber in a raw gas sample. In order to carry out the filling process as emission-free as possible, the coal is filled into the coke oven chamber within a closed system. For this purpose, preferably specially designed and provided with seals Füllteleskope be used.

A method with the features described above and an apparatus for carrying out the method is known from DE 10 2008 008 713 B4. After the coal filler wagon has been positioned, the fill hole lid is lifted off the fill hole and moved sideways. At- closing a connection between a coal discharge device of the coal filling carriage and the filling hole is made by lowering a Füllteleskops. The filling telescope is equipped with seals, whereby a largely tight connection between the discharge of the coal hopper and the coke oven chamber is made and created an atmosphere closed system. The entry of coal into the coke oven chamber takes place within this closed system. To fill a coke oven chamber usually four to five Füllteleskope on the coal filling car exist, which are connected to a corresponding number of filling holes of the coke oven chamber. After the coal has been introduced into the coke oven chamber, the filling telescopes are raised one after the other and the filling hole covers are re-inserted into the filling openings. During this process, the system remains active to exhaust the filling gases. The coal filling is completed after all filler caps have been inserted.

In conventional methods for filling Koksofenkammern can arise when lifting the Füllteleskope significant emissions. It can be observed that, after lifting the filling telescope, air enters the coke oven chamber in such quantities that occasionally an ignitable mixture is produced with the raw gas produced in the coke oven chamber, which reacts explosively, releasing emissions from smoke, soot and dust exit from the open filling hole.

The object of the invention is to provide a method for filling of coke oven chambers, in which the formation of emissions is reduced. To carry out the method, a device should be used which can be integrated with as little effort as possible into existing systems for coke oven filling.

The invention relates to a method according to claim 1 and an apparatus according to claim 10 for carrying out the method. T / EP2014 / 002070

3

Based on a method with the features described above, the filling hole is at least partially closed after filling the coke oven chamber by means of a closure element before the filling telescope is lifted from the filling hole. The filling hole cover is then inserted into the filling hole at least partially closed by the closing element. The complete or at least partially closing of the filling hole before the insertion of the filling hole cover takes place in a system closed to the atmosphere. Only after the filling hole has been at least partially closed by the closure element, the filling telescope is lifted from the filling hole and thereby solved the connection between the discharge of the coal filling carriage and the filling hole. Subsequently, the filling hole cover is inserted into the filling hole and the coke oven chamber for the coking process permanently closed.

The closure element can be designed such that it completely or almost completely closes the cross section of the filling hole. A variant of the method according to the invention provides that the closure element does not completely close the cross section of the filling hole but keeps a reduced cross section open for the inflow of air. As a result of a prevailing in the coke oven chamber slight negative pressure air is sucked, which at the same time the escape of raw gas from the furnace chamber is avoided by the suction of air. By the action of the closure element according to the invention, however, the influx of air is reduced so that set constant conditions and explosive reactions are excluded in the coke oven chamber.

The closure element may be formed as a separating element or ceiling-shaped element, which is moved and positioned by means of a handling device arranged on the coal filling carriage within the space formed by the connection between the coal discharge device and the filling hole. For detecting the closure element, the handling device may have a vacuum lifter or a lifting magnet. The handling device allows lifting and lowering the closure element within the space separated by the atmosphere, which is formed by the filling telescope and the filling hole.

The closure element can be deposited by means of the handling device on a support surface within the filling hole. In this case, the position of the closure element is determined so that the Fülllochdeckel can then be inserted into a frame surrounding the filling hole and sealed for the subsequent coking process, for example with a potting compound within the Fülllochrahmens. During the coking process, the filling hole cover and the closure element are arranged one above the other within the filling hole.

For a new filling of the coke oven shaft with coal, the filling hole cover is lifted and the closure element is removed. Also for removing the closure element, the handling device can be used. According to a corresponding embodiment of the method according to the invention the closure element is thus removed by means of the handling device for the duration of filling the coal and then re-inserted. The closure element may in particular be designed in the form of a lid, which is positioned in the filling hole and must be removed before each filling operation.

According to a further embodiment of the method according to the invention, a closure element made of a combustible material is used which burns during the cooking time of the coke. This method variant takes into account the fact that the closure element must be active only for the short period of time between the lifting of the filling telescope and the insertion of the Fülllochdeckels. The closure element may for example be made of wood, pressed coal or other combustible material.

For carrying out the method according to the invention, it is also possible to use a closure element which is located below the position in the filling hole 14 002070

5 of the Fülllochdeckels is stationary and opens during the filling of the coal through the coal flow and then automatically closes again. The closure element designed in this way can be installed in the upper region of the filling hole, preferably in the filling hole frame. The stationary arranged closure element may for example be designed as a flap which is pivotable about an eccentrically arranged axis and folds when filling the coal down and aligns vertically in the coal flow, so that the coal flow can flow into the filling hole. After filling, for example, a counterweight ensures that the element aligns horizontally again and closes the filling hole. Other reset mechanisms should not be excluded. Likewise, other constructions, such as multi-part closure elements or slide constructions can be used.

The invention also provides an apparatus for carrying out the method described. The basic structure of the device comprises a movable on the upper side of a coke oven coal filling car, which has a Kohleaustrag, at least one lowerable Füllteleskop and a lifting device for lifting and inserting a Fülllochdeckels in an associated filling hole. According to the invention, a closure element is provided which is arranged in the filling hole below the position of the filling hole cover stationary or replaceable and at least partially closes the cross section of the filling hole after filling the coke oven chamber. Advantageous embodiments of this device are described in the dependent claims 11 to 17 and explained below with reference to embodiments. It show schematically

Fig. 1 shows a device for filling furnace chambers of a

 coke oven,

2a to 2e, the method steps of a method for filling a

Coke oven chamber using the apparatus shown in Fig. 1, Fig. 3 shows an alternative embodiment of that shown in Fig. 1

Contraption.

The apparatus shown in Fig. 1 for filling furnace chambers of a coke oven is arranged on the underside of a coal filling carriage, not shown. The Kohlefüllwagen is movable on the furnace roof of a coke oven and has a coal discharge device 1, at least one lowerable Füllteleskop 2 and a lifting device 3 for lifting and inserting a Fülllochdeckels 4 in an associated filling hole 5 in the furnace roof 6 of the coke oven. Furthermore, at least one closure element 7 is provided which is arranged below the position of the filling hole cover 4 in the filling hole 5 of a coke oven chamber 8 of the coke oven and at least partially closes the cross section of the filling hole 5 after filling the coke oven chamber 8. In the embodiment of Fig. 1, the closure element 7 is formed for example as a flap which is pivotable about an eccentrically arranged axis 9. When filling the coal, the closure element 7 folds down and is perpendicular to the coal flow, so that the coal flow can flow into the filling hole 5. After filling, a counterweight 10 ensures that the closure element 7 again aligns horizontally and closes the filling hole 5. Corresponding stops 11 limit the rotational movement. Different structural configurations of the closure element 7 should not be excluded. Essential to the invention is only that the closure element 7 opens during the filling of the coal through the coal flow and then closes automatically. The closure element 7 is expediently arranged in a filling hole frame 12 surrounding the filling hole 5.

Using the device shown in Fig. 1, the method for filling the coke oven chamber is operated as follows: The movable on the top of the coke oven charcoal filling is positioned at one in the furnace roof 6 of the coke oven chamber 8 and closed with a Fülllochdeckel 4 filling hole 5. The Fülllochdeckel 4 is lifted and moved to the side (Fig. 2a). Thereafter, the filling telescope 2 is lowered onto the filling hole 5, wherein by means of the lowered filling telescope 2, a connection between the coal discharge device 1 of the coal filling carriage and the filling hole 5 is made (Fig. 2b). The compound forms a shielded from the atmosphere and preferably also sealed room. The coal is introduced through the filling telescope 2 and the filling hole 5 in the coke oven chamber 8 (Fig. 2c). After filling the coke oven chamber, the filling hole is at least partially closed by means of the closure element 7 (FIG. 2 d), before the filling telescope 2 is lifted off the filling hole and the filling hole is closed again with the filling hole cover 4. Thus, the Fülllochdeckel 4 is inserted into the through the closure element 7 at least partially closed filling hole 5, as shown schematically in Fig. 2e. For the coking process, the filling hole cover 4 can be sealed off from the filling hole frame 12 by a casting compound. The closure element 7 has only the task of closing the filling hole 5 during the period between the lifting of the filling telescope 2 and the insertion of the Fülllochdeckels 4 so far that air from the atmosphere during this period can not flow into the uncontrolled coke oven chamber 8. Any air flow is reduced to such an extent that constant conditions are established and explosive reactions in the coke oven chamber due to the incoming atmospheric oxygen are excluded.

In the embodiment of FIG. 3, the closure element T is designed as an intermediate cover and can be moved and positioned by means of a handling device 13 arranged on the coal filling carriage. The movement of the closure element T takes place within the space formed by the connection between the coal discharge device 1 and the filling hole 5. The handling device 13 comprises a lifting magnet or a vacuum lift, which detects the closure element 7 '. By means of the handling device 13, the closure element 7 'can be deposited on a support surface 14 within the filling hole. The closure element remains in the upper region of the filling hole 5 during the process. Before each filling process, it must be removed by means of the handling device 13. At the end of Filling process, it is then brought back to the position shown in Fig. 3 before lifting the Füllteleskopes 2.

A further embodiment variant of the invention provides that the closure element 7 'consists of a combustible material which burns during the G.arzeit of the coke. This embodiment takes into account the fact that the closure element 7 'only for the short period of time between the lifting of the Füllteleskopes 7' and the insertion of the Fülllochdeckels 4 must be active. The closure element 7 'consists for example of wood, wood materials, pressed coal or other combustible material.

Claims

claims: 1. A method for filling a coke oven chamber of a coke oven, wherein a movable at the top of the coke oven coal filling car at one in the oven ceiling (6) of the coke oven chamber (8) and with a Fülllochdeckel (4) closed filling hole (5) is positioned, the Fülllochdeckel (4) is lifted off and a filling telescope (2) is lowered onto the opened filling hole (5) to establish a connection between a coal discharge device (1) of the coal filling carriage and the filling hole (5), Coal is filled through the filling telescope (2) and the filling hole (5) into the coke oven chamber (8), the filling telescope (2) is lifted off the filling hole (5) and the filling hole (5) is closed again with the filling hole cover (4), After the filling of the coke oven chamber (8), the filling hole (5) is at least partially closed by means of a closure element (7, 7 ') before the filling telescope (2) is separated from the filling hole (5 ), and that the filling hole cover (4) is subsequently inserted into the filling hole (5) at least partially closed by the closing element (7, 7 '). 2. The method according to claim 1, characterized in that the closure element (7, 7 ') does not completely close the cross section of the filling hole (5) but keeps a reduced cross-section for the inflow of air. 3. The method according to claim 1 or 2, characterized in that the closure element (7 ') by means arranged on the coal filling carriage handling device (13) within the space formed by the connection between the coal discharge device (1) and the filling hole (5) is moved. 4. The method according to claim 3, characterized in that the closure element (7 ') is detected by a solenoid or a vacuum lift. 5. The method according to claim 3 or 4, characterized in that the closure element (7 ¹ ) by means of the handling device (13) on a support surface (14) within Füllloches (5) is stored. 6. The method according to any one of claims 3 to 5, characterized in that the closure element (7 ') by means of the handling device (13) for the Duration of filling the coal removed and then reinstated. 7. The method according to any one of claims 1 to 5, characterized in that a closure element (7 ') is used made of a combustible material which burns during the cooking time of the coke. 8. The method according to claim 1 or 2, characterized in that a closure element (7) is used, which opens during the filling of the coal through the coal flow and then automatically closes again. 9. The method according to claim 8, characterized in that the closure element (7) in a filling hole (5) surrounding Fülllochrahmen (12) is installed. 10. Apparatus for carrying out the method according to one of claims 1 to 9 with a movable on the upper side of a coke oven coal filling car, a coal discharge device (1), at least one lowerable filling telescope (2) and a lifting device (3) for lifting and inserting a filling - Lochdeckels (4) in an associated filling hole (5) in the furnace roof (6) of the coke oven, ge ke nn ze zenet by at least one closure element (7, 7 '), which in the filling hole (5) below the position of Fülllochdeckels stationary or is arranged interchangeably and the cross section of the filling hole (5) after a coal filling of the coke oven chamber (8) at least partially closes. 11. The device according to claim 10, characterized in that the closure element (7 ') is supported on a bearing surface (14) within the filling hole (5). 12. The apparatus of claim 10 or 11, characterized by a arranged on the Kohlfüllwagen handling device (13) for moving the closure element (7 ') within a sealed-to-the atmosphere space from the filling hole (5) and the open on the filling hole (5) lowered Füllteleskop (2) is formed. 13. The device according to claim 12, characterized in that the handling device (13) for detecting the closure element (7 ') has a Lifting magnet or a vacuum lift has. 14. Device according to one of claims 10 to 13, characterized in that the closure element (7 ') consists of a combustible material which burns during the cooking time of the coke. 15. The apparatus according to claim 10, characterized in that the closure element (7) is designed as a flap or slider. 16. The apparatus according to claim 0, characterized in that the closure element (7) opens during the filling of the coal through the coal flow and then closes automatically. 17. The apparatus of claim 15 or 16, characterized in that the closure element (7) in a filling hole (5) surrounding Fülllochrahmen (12) is arranged.