DE3307068A1 - Improved refractory lining for coke oven doors - Google Patents

Description

APGTLLE E CAOLINI. '.. "'.

Via, Martin Piancrio 13 '"*

C.enua, Italy 3 '■ " ¹ ^ ^; ■'" · ^r ' ^{: Λ}

February 28, 1983 487333 cns 7.JPJ3333EHTS KWSHFKSTE MASONRY PURE KOKoOFENTURIiN Reg.-No. 126_jjl3

The subject of the invention is a refractory lining for coke oven doors

It is well known that coking oven doors serve as a mechanical shut-off device for Avoidance of the carbon leakage also as a seal against the leakage of the self in the course of the conversion of hard coal to coke-forming gases.

According to a recently introduced, already known method, the coke oven door normally provided with refractory lining in this "· A vertical chimney, open at the top and bottom, is provided from the brickwork the gases formed inside the furnace can flow out from below upwards «

From the experience gained to date with such an arrangement, it is it became clear that with such a chimney not the whole thing in the zen_ central part of the furnace) gas - can reach the top of the cell, which is why the gases seek a way to escape along the side edges of the oven door, which, due to the combined effect of heat and pressure, a deformation not only of the usual metal seals of the door, but even of the cell door frame.

The object of the invention is therefore to provide an improved refractory lining which eliminates the above-mentioned disadvantages through the features specified in the patent claims below. Another aspect of the invention is the mechanical door frame on which the proposed refractory brickwork is to be attached.

The advantages and features of the invention are set out in the description below and on the basis of the accompanying drawings of exemplary embodiments according to the invention lan explained in more detail, whereby:

Fig. 1 shows a horizontal cross-section of a coke oven door according to the invention, level 2 "a partial view according to plane H-II of Fig. 1, which shows, in partial section, the cross-section of one of the refractory anchoring bricks of the brick lining,

Fig. 3 is a view along level H-II of Fig. 1, partially in section along level III'-III 'of Fig. 1,

ORIGINAL INSPECTED

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Figure 4 is a front view of the metallic 3tUtzrahm? .Ns Ί-r lirfindungsjjrsrnässen Koksc door,

Fig. 5 is a side view of the frame according to Fig. 41, Fig. 6 is a front view of the entire refractory lining according to the invention with the central shell removed,

Figure 7 is a side view of the refractory lining according to Figure 6 and Figure 8 is a variant of the embodiment shown in Figure 1, _f

. In Fig..I, 10 denotes the metal structure of the coke oven door. On the left-facing inner surface of the metal structure 10, a support frame 20 is attached in the manner described in detail below, which has the task of supporting the refractory lining indicated as a whole by 30. In summary and for the time being only with reference to Pig. 1, the coke oven door consists of a metal structure __ IQf that forms the outer load-bearing part of the door. 'from the supported by this metal structure 10 and arranged on the inner surface of the same support frame 20 and from a fire-resistant lining marked as a whole with 30.
Between the support frame 20 and the refractory lining 30 is advantageous

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with insulating material, e.g. Plastic, bulk and / or refractory fibers, etc. more filled Cavity provided.

As can be seen from the pictures, the refractory masonry 30 consists of a series of prefabricated and superimposed blocks 31j which essentially have a rectangular cross-section and whose surface facing the steel structure 10 is hollowed out ₍ and the cavity 4Q to be filled with insulating material form ·

This cavity is thus formed by two ribs 32 through which each block 31 on the corresponding ribs 12 protruding from the metal structure 10 is present.

The blocks 31 made of refractory material are secured by suitable anchoring elements, which they tie to the support frame 40, in contact with the metal structure 40 held down.

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In a manner known per se goes through each block 31 of the refractory lining a vertical pipe or a vertical, centrally telegenic chimney 50, that through the lower block 31 '(see Figure 6) with the lower areas of the coke oven comes into connection, while through the upper block 31 "(see Fig. 6) the connection is made with the top of the coke oven.

According to the invention, each block 31 of the refractory lining 30 is provided with a row of transverse lines 51 and 52, which are arranged opposite the axes xx and yy in the form of an "X ^M" , both lines of lines 51 and 52 open into the side surfaces of the refractory lining 30, ie in Those surfaces of the brick lining 30 which extend parallel to the walls of the coke oven and are indicated in Figure 1 by the dashed line 60. Poles, which form during the coking process and which flow out between the brick lining and the walls 60 of the coke oven cell, are pushed tending gases against a double row of lines 5I or 52, which convey the gases into the chimney 50 and from here up to the upper area of the coke oven.

In this way, dier.Ansaramlung of compressed gases in the areas 41 on the Ketallstruktur 10 and _-; .the. -due to deformation of the known sealing elements, therefore not shown in the pictures, avoided.

As a result, the sealing elements can therefore be operated at lower temperatures and lower pressures and at the same time maintain a better sealability for a longer period of time - namely, the gas is transported upwards through the lines 5 ^ i 51 and 52, the pressure is reduced, the temperature of the between the cell wall βθ and the lining 30 in the immediate vicinity of the metal structure 10 is lower.

As can be seen in detail from Figures 7 and 8, the lines 5I and 52 upwards or downwards, from the outside of the brickwork to the vertical central channel 50 directed / around thereby the natural convection movements of the wähnend gases generated during the process.

To prevent material from being deposited ₍ the outflow path of the conduit 53 forming the conduit 50 is preferably inclined downward on both sides of the conduit 50, at the level of the upper end of the brick lining 30.

In the solution according to Figure 1 , the line 50 is closed at the top by a plug 54, and the lateral lines 53 form the outflow path for the gases, ',

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In order to hold the various feuerfeoten blocks 31 by means of the secondary structure is ^β in the interior 4 άβ3 block 31 "already during its molding, a series of two, VL · and - as shown in Figure 7 visible-six refractory bricks 7O (s, Image 3 ) sunk, ^a aueragt whose end 71 us of the inner surface of the block 31st These stones, which are known per se, are prism-shaped / and ribs are provided on their side surfaces, through which a connection between the material of the lining 31 and the stone 70 is established.

Brackets 80 welded onto the support frame 20 penetrate the stones 70. In this way, the support frame 20, the brackets 80,4i «provide ribs» stones 70 and the blocks 31 of the brick lining 30 form a whole, which is separated · * · »■ assembled and then as a single3 element on the metal structure 10 can be anchored. · '·

What remains to be described is the connection between the secondary support frame 20 and the metal structure 10, making sure that this connection Must be able to be dismantled in order to make changes that may become necessary over time de ι * refractory brick lining 30 to 'allow.

As can be seen from Figures 1 and 5 and 6, the support frame 20 is essentially borrowed from a rectangular frame of usual welded together Profile iron with stiffening webs 23 is formed. Corresponding to the stiffening webs 23, the stirrups 80 for anchoring the refractory lining are attached welds. To secure a connection between the metal structure 10 * and the support frame

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In order to be able to guarantee, the metal structure / penetrate Iz bolts are provided which, instead of a normal screw head, have a hammer head 91 which can clamp the inner flank of the profile iron forming the support frame 20.

By tightening the nuts 90, it becomes possible to secure the hammer heads 91 to the ProfiIeir.cn dej support frame ^ 20 until sur stable anchoring the lietal structure 10 to tighten. In this way Kan receives something that can be dismantled , extremely simple and at the same time effective support system. With reference to Figure 1, it should be noted that the lines 52, which are outside the lining 30, the next 2ur metal structure, open into a suction channel 55 have, which essentially consists of a vertical groove on the surface the refractory lining. Recording '; of the remaining CR.ire.3te pre__

formed and

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In addition, as can be seen in Fig. 3, are above the mouth points of the lines 5I and 51> ini inside the line 50, ^ Thickenings 56 are provided, as a result of which throttle points 57 arise in which the Increased flow velocity of the gases and a back suction the same are favored by the lines 5I and 52 (Venturi effect).

Pig. 8 shows a variant of the figure! In which the support frame 120 is partially enclosed in the refractory brickwork 130.

Of course, several variants and modifications can be made in the description The exemplary embodiments according to the invention explained and shown on the drawings are carried out, but all of them ala to those listed below Patent claims are to be regarded as founded · ■

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Claims (10)

-5- PATS IT TA II SPARDS 1.) Improved refractory lining for coke oven doors of the type that Provides at least one outer metal frame with a brick lining inside preferably made of fire-resistant material, THEREFORE MARKED THAT a vertical through-flow line for the gases formed in the course of the coking process is provided through the above-mentioned brickwork Flow line is connected to the upper and lower ends of the coke oven and also has a number of cross lines that make the connection with the middle areas of the coke oven. 2.) Refractory lining according to the above claim, DADURCH GE that the lining has a substantially rectangular, horizontal cross-section and those mentioned, the connection of the vertical duct with the intermediate zones de3 coke oven producing cross-links preferably on the side surfaces of the refinement, i.e. on the essentially to the coke oven walls parallel surfaces, open. 3.) Feuerfsjte lining according to claim 2, CHARACTERIZED BY that the transverse lines are substantially in the form of an "X ^M geoenover the three axes COPY -6- the brickwork are arranged so that a pair of these cross lines substantially corresponding to the two outer edges of the brickwork and the second pair in the Open near the inner edges of the refractory lining. 4.) Refractory brick lining according to claim 2 _t THROUGH GEKENlIZSICICiST, that the said cross lines are arranged inclined alternately upwards or downwards and sum inside the refractory brick lining. 5.) Refractory brick lining according to one or more of the above claims _; CHARACTERIZED GEKSNNZEICRiiETjdass which opens in the vicinity of the metal frame corresponding to the entry end of the cross channel pair, ·, Tut is provided on the refractory lining of a vertical!. 6.) Refractory brick lining according to the above claim, BY GEKEKNZEICH-NST that below the mouth of each cross line pair3, in the centrally arranged ^ vertical line of the refractory lining, a narrowing provided which causes the gases formed in the furnace to enter the interior of the brickwork sucking back negative pressure is generated. 7.) Refractory brick lining according to one or more of the above Claims. / CHARACTERIZED BY THE fact that they consist of several superimposed Blocks is formed. 8 ») Refractory brick lining according to one or more of the above claims _/ DADURCH GEKELINZSICHITST that in each of the above-mentioned blocks at least one refractory anchoring pin is sunk, which is supported by metal hooks through the metal structure of the furnace door. 9.) Refractory Aui.riiaur.rung according to claim 8, THROUGH GEKElITJZSICHiraT that the metallic support structure of the coke oven door is made of a pi-imary and a secondary structure, the latter by means of detachable elements is supported. 10.) Refractory lining according to claim $ BY GSKENIiZEICIITJET that the secondary structure is formed from a support frame made of metal, on which support hooks are attached for the anchoring stones sunk inside the refractory lining. COPY