DE1608318A1 - Exhaust gas outlet on a tiltable, inclined rotating oxygen top-up converter - Google Patents

Description

my reference: cas 22 (o37o Pt)

SOCIETE LORRAIEE DE LAMIlJAGE GOITTIlTU 28, rue Dumont d'Urville, 75 - PARIS (16e)

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The invention "relates to a vent for exhaust gases from a pre-quality furnace of the KALDO type, with this trigger is assigned a device for controlling an injection lance.

For this type of furnace, an injection lance that can be moved and swiveled in the axial direction is used, which is inserted into the upper, outer end of a chimney for exhaust gases, this chimney in the vicinity the mouth of the furnace is provided.

To operate the au3 the exhaust vent

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and to facilitate the existing unit of the injection lance, a trigger has already been proposed which directly controls the device for controlling the injection lance carries, and which is pivotable about a vertical pivot axis arranged outside the trigger, so that he can move away from the mouth of the converter.

In the case of a converter of the L.D type, a vent for exhaust gases is known, which can be rotated on a pivoting column is stored. This swivel column is mounted coaxially to a vertical chimney, with rollers on the lower outer end are arranged. The trigger is supported on rails that are mounted at floor level are.

These devices have numerous disadvantages, in particular with regard to the assembly of the bearing Recording of the lance directly on the trigger, and also with regard to the type of rotary movement of this trigger. These Disadvantages force you to make a deduction on the one hand, which is much heavier than for the pursuit of the real thing Objective by means of the latter would be required, and on the other hand a rather complicated arrangement of supply lines for the coolant of the fume cupboard and the lance, and for .das the injection gas of the injection lance is required.

The invention avoids all of these disadvantages,

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aims at realizing a relatively light trigger for exhaust gases from, and allows a form suitable for injection lance and the various supply lines for Sas and the coolant for the lance and the deduction and certain common storage \ ^r ori: see u. The invention then relates to a .Irehbaven flue for exhaust gases, it is characterized by the fact that the flue rests in a known manner on a pivot pin lying coaxially to the chimney and lies below this chimney, that this pivot pin with an arm pointing to the side forms a unit on which independently of deir. Deduction a bearing of the injection lance and the air supply certain connecting lines, namely on the one hand for injection gas and coolant for the lance, and on the other hand for coolant for the fume cupboard are arranged, v / elcher at its upper end iL. is guided by a wreath with rollers. .

The inventive design can de; Deduction, which no longer needs the injection lance wear su, in seiuei- ¹ Construction easier no, and the supply lines may be rigid about the gri5ßten Toil '' hROR length seinj are serving the l rn'in organs for storage and control of the au ^ above the Influence of temperature on the trigger

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and withdrawn from the converter.

The inventive training can a more effective cooling of the fume cupboard can be achievedj is also the space requirement for the various, for the cooling process required connecting lines extremely low.

The further features of the invention emerge from the following description and the drawing. The drawing shows in a purely schematic way:

Figure 1 is an isometric view of the exhaust vent attached to a pivot is, in turn, with a laterally extending arm and a part of the bridge girder is connected.

2 is a view, partly in section, of the trigger for exhaust gases, the section being taken through the longitudinal axis of the furnace.

Fig. 5 is an isometric partial view of the storage -the Injection lance.

Figure 4 is a vertical section through the base of the pivot.

5 shows a longitudinal section through the hydraulic double 009850/0641

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cylinder and the rack to control the pivot.

Pig.6 shows a vertical section through the connection zone between the top outer end of the chimney and the base of the chimney.

The one in Pig. 1 and 2 with 1 designated exhaust for exhaust gases is connected to a pipe collector 2, the other outer end of which is arranged on the base of a chimney 3. (Fig.2) The exhaust fume cupboard is mounted exclusively on a pivot 4, the base of which bears a lateral arm 5 , a bridge girder 6 is attached to the outer end of this lateral arm 5.

Nozzles 7 and B for introducing additional products are located on the jacket of the exhaust fume hood, for example minerals, lime and the like fed in via a chute on the one hand and an injection lance on the other hand 9 ·

The opening of the Deduction for exhaust gases arranged opposite the mouthpiece of the rotary converter 1o, which for example against the horizontal plane is inclined at an angle of 17 °. (Fig. 2)

In the rest position, the exhaust gas deduction is ΟΟ'ίβΒΟ / αβΑΊ

normally retracted or retracted to the rear to allow access during temperature measurement, the sampling, purification and the like. To leave free. The blowing of oxygen into the converter 1o takes place with the aid of the double-walled lance 9, which has connections 11, 11a, 11b, the connections 11,11a are connected to the circuit of the coolant, while the connection 11b via a flexible Rubber hose and the like. Is in communication with the injection gas. The lance 9 is by means of the vent 1 for exhaust gases a sleeve 8 or a connecting piece liindu rchge, which forms a double wall 12 which corresponds to that of the flue 1 · for exhaust gases and the nozzle 7.

The coolant flows through between the two walls 12, for example cooling water can be used as the coolant to get voted. In the nozzle 7, a chute is mounted, which is equipped with a funnel from the vent 1 for exhaust gases is led to the outside, while the lower outer end of the chute 13 is level with the mouth of the converter 1o. This chute 13 that is also cooled with cooling water, is to be applied dea converter 1o with additional products, namely Minerals, lime and so on.

The lance 9 is adjustable in its inclination and penetration depth, i.e. in the axial direction.

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Individually ton of the device to regulate the position of this Lanse 9 are in Pig. 3 of the drawing.

The injection lance 9 is attached to a chassis H with the aid of pipe clamps 15 and the like.

This, in the form of a channel, carriage bell 14 is provided with rollers 16, which run along traditional guide rails 17, and which latter in the present case is designed as U-irons, whereby the legs of these U-irons are supported opposite one another.

On the outer lower surface of the chassis 14 there is mounted a rack 13 which engages in a toothed wheel vibzol 19 which is mounted on the output side of a reduction gear designed as a Selmnol gear.

The unit formed from dom chassis 14, the injection lance 9 and the guide rails 17 is between ii two flanges 2o supported, a part of which is shown in Fig. 3 is visible. These flanges 2o, which are best referred to as carriers of the movement mechanism, are open a pivot axis? 1 pivotally mounted, which in the immediate Ilähe of the connection B is and on a support bracket 39 is stored. This bearing block 39 is immediate on the bridge girder 6 of the side

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arranged extending arm.

The changes in the inclination and the depth of penetration of the injection lance 9 can either be separate or but be made at the same time. The change in the inclination of the lance 9 can be achieved with a mechanically driven screw spindle gear designed as a reduction gear 22 are made while the adjustment of the depth of penetration of this lance 9 with the help of Feed and return system Η »13.19 of the movable Chassis 14 can be carried out.

The supply and discharge lines of the coolant and the blowing agent are advantageously mounted on the bridge girder 6, which is at the free outer end of the laterally extending arm 5 is attached «This laterally extending arm 5, which on the Pivot 4 is cantilevered, allows a shift of all elements on the trigger 1 for exhaust gases out.

The general shape of the flue 1 for exhaust gases is chosen so that the exhaust gases sucked off in one direction Reach the vertical very quickly, with the heaviest dust particles falling back directly into the converter 1o, whereby an accumulation of the slag in the flue 1 for exhaust gases is prevented.

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In order to limit the air intake to a minimum, the axis of the mouth of the flue 1 for exhaust gases, which coincides with the vertical axis of rotation of the pivot pin 4, also coincides with that of the vertical chimney 3 sum of the exhaust of the flue gases.

• The lower half part 21 of the opening of the flue 1 for exhaust gases is slightly shifted in the direction of the rear part in order to prevent soiling or sooting and to allow easier discharge of the dust particles and slag that are at the entrance of the flue 1 for Exhaust gases can accumulate. Shoe-like parts 24 made of thin-walled sheet metal are arranged on the circumference of the flue 1 for exhaust gases in order to prevent wear of the outer sheet as a result of the accumulation of slag on the pouring opening of the furnace. X * ± g.2) ..

The flue 1 for exhaust gases is wavy Parts or drawn or pressed, curved parts 25, which are provided on the edge of the opening of the flue 1 for exhaust gases, specifically in the middle part of the main piece and in which the base is the chimney 3 of the Deduction 1 for exhaust opposite part, as well as near the mouths of the nozzles 7 and 8. These Make wavy parts or curved parts easier

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the free expansion between the inner and outer wall.

The thickness of the inner sheet 3 is chosen to be somewhat greater than that of the outer sheet.

The supply of the fume cupboard 1 for exhaust gases with water or oxygen, the lance 9 with oxygen and the chute 13 with additives is realized with the help of swivel joints, which rotate the trigger 1 for exhaust gases and allow a certain eccentricity during the rotary movement.

The cooling water is introduced in two places,

which are arranged on the lower surface of a ring collector 26 (Figs. 1 and 2). This ring amniler 26 surrounds the mouth of the vent 1 for exhaust gases and supplies it via a group of connections or channels 27, which have a regular Have a pitch and are expediently cranked to accommodate deformations as a result of the temperature differences between the ring collector 26 and the outer sheet of the fume cupboard 1 for exhaust gases (Fig. 1).

The water is drawn off in the upper part of the flue 1 for exhaust gases, in the vicinity of the chimney 3. The water is directed into the channel or a water tank 20 (Fig.6), this channel or water tank 28 is designed so that the movable openings

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during the rotation always above the water container 28 are. The principle of water entnalime and introduction to ten fixed water tank 23 prevents the arrangement of ' additional swivel joints for the water return pipes.

In the water extraction zone, a turntable made of cast steel is provided, this turntable being connected to the outer upper end of the flue 1 for exhaust gases by a shrink connection, screw connection or welded connection . The turntable 29 rotates in a, Ri: ij? O, which is initially connected to the upper floor 31 of the steelworks and is equipped with cylindrical, spherical rollers, these rollers 32, for example, being supported in a controllable manner with the aid of an eccentric system (Fig. 6)

The vent for exhaust gases is via a two-speed line lateral shaft 33 on a bearing socket 34- more conventional Art stored (Fig. 4). The two parts of this sideways Shank 33 are arranged centered on one another and with one another connected via screw bolts (Fig. 1).

This cast steel bearing pan 34 can be moved downwards and on the working platform 35 of the steelworks attached. The bearing pan 34 is designed so that it is suitable for the extraction of exhaust gases and certain water supply lines. These supply lines are through the bearing pan 34

this happens in the lower part of the

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pin 4 and in or on the side arm 5, so the lines open into the bridge girder 6 and can be attached to this ", which latter the Storage for the lines is.

The rotary movement T of the vent for exhaust gases, the main part of which can be assembled from two parts welded together, which ensure very good mechanical behavior of the overall arrangement and at the same time facilitate manufacture and assembly, is controlled by a hydraulic double cylinder 36. Associated with this hydraulic double cylinder ¹ 36 is a rack 37 which engages in a ring gear 33 which is arranged in the lower part of the pivot 4. (Fig.?)

The invention is by no means limited to the ones described and illustrated embodiments limited. There are other possibilities conceivable without this goes beyond the scope of the basic concept.

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Claims (5)

Claims. tenon ι ο I O Uo O 1. Discharge for exhaust gases from a furnace of the Lype Kaldo, which forms a unit with a curved suction line, one outer end of which opens into the chimney and the other outer end opens coaxially into a vertical chimney * da durchgek e η η ζ ei ch η et that the flue C-) rests in a manner known per se on a pivot pin (4) lying coaxially to the chimney (3) and lies below this chimney (3) that this pivot pin (4) with .einem arm (5) pointing to the side forms a unit on which, independently of the trigger, a bearing (6.2o) of the injection lance (9) and the connecting lines intended for the supply, namely on the one hand for injection gas and coolant for the lance, and on the other hand for coolant for the trigger, which is guided at its upper end in a ring (3o) with rollers (32) " 2. Deduction according to claim 1, dadur eh ge ke η n ~ records that the imager of the injection lance (9) is formed from a bridge girder (6) which has two at the free outer end of the side-facing arms (5) Flanges (2o) rotatably mounted on an axis of rotation (21) of the arm (5) and mounted in the fume cupboard near the mouth of the nozzle (ß) of the blow-in lance (9) so that the flange (2o) with JPÜhrungasohieneji (17 ) auages-tatts 009850/0641 _, _.- A2- - are that in these guide rails (17) a Injection lance carrying chassis (14) is movable, and that means (22 or 18, 19) for pivoting the flanges (2o) or. the axial movement of the chassis (H) are provided. 3. Deduction according to claim 1 and 2, d a d u r c h g ek en η ζ ei c h η e t that the one part of the. Gas and coolant supply lines in the Pivot (4) and in or on the one to the side pointing arm (5) is mounted, and that the other part is attached to the bridge girder (6). 4 · extractor according to claim 1 to 3, characterized g e k e nn ζ calibration η et that the coolant is connected to supply line for the trigger (1) at the outer, free and lying opposite the mouth of the furnace end of the hood, and that this Connection takes place via a ring collector (26) on which connections (27) are distributed and open into "the" interior space between the double walls (12) for cooling the fume cupboard (1). 5. Deduction according to claim 1 to -4, d a d ti r c h g e— k e η n ζ e i ο h η et that near the outer End of the connected to the chimney (3) A ring-shaped, solid Wa ο. -J erbe hai tot · (2S) ' is arranged, and that the outer ends of the OO 9-8 OK / 0 6 A 1 - A3 - cannula for the coolant above the water tank (23) e ui & ündeii, the one with the double wall (.12) for the "Coolant of the fume cupboard are connected. ■■ BAD ORIGINAL ' 0098 50/064 1 4t Blank page