CN1103424A

CN1103424A - Method and apparatus for supplying coal to combustion chambers of group of coke ovens

Info

Publication number: CN1103424A
Application number: CN94106672A
Authority: CN
Inventors: 克劳斯·巴斯特
Original assignee: Hartung Kuhn and Co Maschinenfabrik GmbH
Current assignee: Hartung Kuhn and Co Maschinenfabrik GmbH
Priority date: 1993-06-29
Filing date: 1994-06-20
Publication date: 1995-06-07
Also published as: DE59406110D1; EP0632117B1; EP0632117A1; JPH07138571A; TW288045B; CA2126959A1

Abstract

In the process according to the invention, provision is made for the lower end of the charging tube (1) to be closed after completion of the charging operation upon commencement of the lifting and for the closure to be maintained until the next charging operation. For this purpose, the lower end of the charging tube (1) is equipped with a movable closure member (7) capable of performing, by means of two hydraulic cylinders (12; 13), a lifting and lowering movement and also a pivoting movement.

Description

Method and apparatus for supplying coal to combustion chambers of group of coke ovens

The present invention relates to a kind of method and apparatus by telescopic filling tube coal in the burner hearth of coke oven battery, filling tube is contained in and adds on the truck, and its lower end can drop on the charging opening framework of coke oven battery charging opening always.

The reinforced of coke oven battery burner hearth undertaken by the charging opening that is located in the furnace roof, and in process of coking, charging opening seals with so-called reinforced flap.When feeding in raw material, take this lid away with cover-taking off device, thereby can coal be sent into burner hearth from adding truck through the filling tube that descended this moment for burner hearth.When reinforced, filling tube forms engaging of a kind of sealing with the charging opening framework, enters atmosphere to stop the gas that produces in that the coal entered is extruded or the process of coking.These gases can be extracted out by filling tube, and import in the susceptor of clean people's device and/or stove oven battery.Yet contain month a large amount of dust, bitum composition and other impurity in these gases, so the residue of these impurity is deposited in filling tube inside with the form of pitch slagging scorification.Meanwhile, some gas is still stayed in the filling tube when feeding in raw material end of processing.Behind the reinforced end of processing, when referring to that just filling tube promotes again, calcination under these residues heat effect formerly, and light the gas of staying in the filling tube.Flame and the fallout that become free state this moment can come out from the outlet of filling tube, and this is that the low pressure that originally is full of in filling tube has not existed, and thereby no longer fallout is effectively aspirated after being raised because of filling tube.

Because the rules increasingly stringent of relevant environmental pollution aspect, so require after promoting filling tube, as much as possible to stop fallout to come out.Therefore, the objective of the invention is to propose a kind of in the burner hearth of coke oven battery the method and apparatus of coal, can overcome above-mentioned shortcoming satisfactorily whereby.

By the present invention is that achieve the above object this paper of being adopted begins the method for described type, it is characterized by, and the lower end of filling tube is closed when beginning to promote, and this closed state remains to next reinforced process when beginning always.

Also can improve the reliability that prevents that fallout is scattered by the present invention in addition, accomplish that this point is that the gas in the filling tube is stayed in suction by before reinforced end of processing promotes filling tube.Bleeding can form low pressure by an extraction pipe that is contained on the filling tube and carry out in burner hearth, make aspiration procedure begin to carry out by a Controlling System.Also the gas that produces when the residue of burning in the filling tube can be extracted out by this extraction pipe, when promoting filling tube, make these gases by compression owing to having sealed filling tube during this period.Withdrawing gas has been avoided making fallout come out to the sealing member place of filling tube owing to pressure improves.

Filling tube should seal as early as possible, that is to say sealing immediately after promoting beginning, and should keep closed state to begin until reinforced process next time, so certain minor increment between filling tube and the furnace roof is preferably depended in the sealing of carrying out filling tube.Do like this and can guarantee when promoting filling tube, to carry out the sealing of filling tube after the shove charge flue gas stops to aspirate immediately.

Closing means as filling tube has various service forms, and bell especially, bell can revolutions in the outlet of filling tube or in the outlet, move, lifting or pull.The guiding valve that is contained in this outlet also can be fulfiled these functions.Obviously, closing means can be provided with suitable heat-resisting covering.

Form of implementation and the mode of operation possible by present device can illustrate below by means of accompanying drawing.Wherein:

A kind of form of implementation of Fig. 1, filling tube wherein can close by rotating cap seal with one;

Fig. 2 is contained in the lid and relevant traversing mechanism vertical view below the filling tube;

Fig. 3 wherein is additionally provided with the device of extracting gas in the filling tube out corresponding to the form of implementation of Fig. 1.

In the equipment that Fig. 1 represents as embodiment, filling tube 1 is designed to monoblock type, and it is round do not make the further vent pipe joint 2 that adds truck of expression in Fig. 1.Can certainly be to be combined into telescopic filling tube by a plurality of pipeline sections.Filling tube 1 and vent pipe joint 2 are surrounded by a flexible seal device 3, and when filling tube 1 sank, tightness system 3 extended downwards.Filling tube 1 is connected with lifting beam 6 with hinge bar 5 by sustained ring 4.By not further in the drawings electricity or a hydraulically powered lifting gear of representing, implement moving up and down of lifting beam 6, thereby filling tube 1 is promoted or decline.According to the present invention, the lower end of filling tube 1 is provided with one and is used as closing means to cover 7.To cover 7 by hinge bar 8 and hang on the sustained ring 9, sustained ring 9 itself then is fixed on the pivot arm rocking bar 10.Pivot arm rocking bar 10 and sustained ring 9 are connected with hydro-cylinder 12 by hanging 11, and hydro-cylinder 12 is fixed on the lifting beam 6, and provide and move up and down for covering 7.As by the vertical view of Fig. 2 as seen, pivot arm rocking bar 10 also is connected with hydro-cylinder 13 in addition, and it makes covers 7 and change to advance and produce.In addition, Fig. 2 is consistent with symbol among Fig. 1.

Mode of operation by present device can be described as follows:

In the original position, filling tube 1 promotes and seals with lid 7, and at this moment, hydro-

cylinder

12 and 13 shrinks.In case control signal makes filling tube 1 carry out the sinking process, and is then at first that hydro-cylinder 12 is overhanging, makes and cover 7 and unload and land downwards from filling tube 1.Then, hydro-cylinder 13 is overhanging, makes to cover 7 and be turned back to position shown in Fig. 2 long and short dash line to a side.Produce fully in case hydro-cylinder 13 stretches out fully also thereby covers 7, filling tube 1 just begins to move down.Meanwhile, hydro-cylinder 12 shrinks, and thereby the lid 7 that will produce on carry.Be in connection state because cover 7 by hydro-cylinder 12 and lifting beam 6, so, when filling tube 1 sinks on the charging opening 15 and hydro-cylinder 12 when takeing in fully fully, between furnace roof 16 and the lid 7 that produces, an onesize safe distance is arranged all the time.The furnace roof 16 that causes on the structure and the height tolerance of charging opening 15 have been compensated in this way.

Behind the reinforced end of processing, by a control signal filling tube 1 is promoted immediately, meanwhile hydro-cylinder 12 is overhanging.When this hydro-cylinder 12 arrived its terminal locations, hydro-cylinder 13 reclaimed, thus make cover 7 be turned back to filling tube 1 below.Utilize the backstop 14 is connected with post 11, guarantee filling tube 1 rise between lid 7 and filling tube 1, have one accurate stipulate apart from the time, hydro-cylinder 12 just stretches out fully.This position of backstop 14 is represented with long and short dash line in Fig. 1 and 3.Such configuration guarantees between lid 7, filling tube 1 and furnace roof 16 enough safe distance is always arranged in rotating beginning, and thereby allows to change as early as possible into lid 7.After hydro-cylinder 13 was regained fully, hydro-cylinder 12 and withdrawal, lid 7 were pressed in filling tube 1 outlet down, thereby filling tube 1 is closed hermetically.Then, filling tube 1 can return its original position.

Fig. 3 represents a kind of form of implementation by present device, wherein, in order to discharge the gas in filling tube, establishes side vapor pipe 17 on filling tube 1.By flexible tube segment 18 vapor pipe 17 and vapor pipe 19 are coupled together, the latter links to each other with the vent pipe joint 2 that adds coal car.Therefore can successfully extract the gas in the filling tube 1 out, and the mode to be suitable for, for example discharge by the susceptor of coke oven battery.This form of implementation is applicable to and should sucking-off stays under the situation of the gas in the filling tube before reinforced end of processing promotes filling tube, and/or the feed-pipe that is used for extracting out sealing is when promoting under by compression the situation of gas.

Claims

1, by the method for telescopic filling tube coal in the burner hearth of coke oven battery, filling tube is contained in and adds on the truck, its lower end can drop on the charging opening framework of coke oven battery charging opening always, it is characterized by: the lower end of filling tube is closed when beginning to promote, and this closed state remains to next reinforced process when beginning always.

2, according to the described method of claim 1, it is characterized by: before reinforced end of processing promoted filling tube, the gas in the filling tube was stayed in sucking-off.

3, according to claim 1 and 2 described methods, it is characterized by: from filling tube, extract when filling tube promotes gas by compression in filling tube out, and import a suitable gas treatment equipment or gas-cleaning installation.

4, according to the described method of claim 1 to 3, it is characterized by: the sealing of implementing filling tube will depend on that certain minor increment is arranged between filling tube and the furnace roof.

5, enforcement is according to the equipment of the described mode of claim 1 to 4, and it is characterized by: a movable closing means is established in the lower end of filling tube (1).

6, according to the described equipment of claim 5, it is characterized by: closing means is designed to lid (7), by means of two hydro-cylinders (12; 13) can make it to move up and down and do turning motion.

7, according to claim 5 and 6 described equipment, it is characterized by: the upper and lower motion of the lid (7) that is caused by hydro-cylinder (12) is controlled by means of a backstop (14).

8, according to the described equipment of claim 5 to 7, it is characterized by: the side at filling tube (1) and vent pipe joint (2) is provided with vapor pipe (17; 19), they are interconnection with a flexible tube segment (18).