DE1433568A1 - Chimney-like chimney for cooling gases - Google Patents

Description

PATENT LAWYERS

DR. W. P. RADT

Dipl.-ing. E. E. FINKENER

"_, _Τ ühristian KR&ET JJS LA SAULX, Embourg

DIPL.-ING. W. ERNESTI _{N ± oolafl SAIIEa} Liège 463 Bochum

Heinridi-König-Strasse 12 Belgium Telephone: 41550, 42327. Telegrammadreeee: Radipatent

Dr. Ex]

64 118

v / pr / aw

Chimney-like chimney for cooling gases

When processing steel, especially in converters that contain pure oxygen or oxygen When enriched air is blown over the liquid steel bath, smoke gases are produced in these The products of the partial combustion of the elements contained in the melt j also lead to them being significant Amounts of dust with. These smoke gases, which also contain a lot of CO, have temperatures that are too high for them to be able to feed such dust separators without further ado that only at relatively low temperatures work. In addition, at temperatures above 1000 0, some of those carried along by the flue gases tend to be Slag to stick on the walls. This results in the need to pass the smoke through beforehand to send chimney-like coolers.

JSs are known coolers in which the vertical exhaust shaft is surrounded by a hollow jacket through which cooling water flows. Those leaving the shaft Flue gases are sent through dust extractors before they are released into the atmosphere * At the moment Usual chimneys. or hoods burn that are enough for GO

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Abdominal gases many times further, which results in a significant development of heat. Both the heat of combustion and the sensible heat of the Hauengese must be dissipated before passing through the dust collectors. A considerable amount of cooling water to be circulated is required for the associated cooling work. This results in a constructive structure of considerable weight, which also requires strong supporting organs, so that the system is quite complex. The chimney coolers known up to now sometimes lack the tight seal; a ^T .Yiedergewinnung of carbon monoxide was not possible as a result, because the possibility of air access which brings G-AAGER the formation of explosive gas mixtures with it.

The aim of the invention is to make the construction of such a shaft-like chimney cooler as light as possible, " with which a sufficient cooling of the flue gases can be achieved in order to create favorable conditions for the separation To create the dust is another goal The aim is to make the chimney cooler completely tight, so that air can penetrate and develop explosive mixtures are excluded and the resulting carbon dioxide can be recovered.

According to the invention, in 'a shaft-like chimney of preferably circular cross-section for cooling. of gases such as those used in steel treatment in converters accrue, 'with a honing jacket through which cooling water flows, this jacket through a with horizontal

BATH ORIGINAL

running ends provided with beaded ion; The wall and an inner wall concentric to it are formed, with rigid and flexible connections of such a type being provided between the outer wall and the inner wall that they allow a relative expansion of the walls in the vertical direction while maintaining a certain radial distance between the inner wall and the outer wall. ± ils rigid connecting elements are provided with struts, which are on the one hand on the upper rope of the chimney, on the other hand ai .. h \ iL: ii. near the nJo supports . The flexible connecting elements are pairs of radial, tightly spaced columns protruding into the lines, one of which is located on the inner wall and one on the outer wall; these "xiipi-en aini ui - ^" corresponding to each other, extending in the direction of the hooks.; the strands provided, which are penetrated by a retaining ring. The nips ensure a constant distance between the outer wall and the inner wall and allow the two walls to expand in the vertical direction.

Preferably in the upper extension of the chimney a water tank arranged, ljahe underneath the same are x) openings arranged in the manhole jacket through which the interior of the shaft, which is used to draw off the breath gases, is attached to a template for the gases to be cooled connected.

In the accompanying drawings, an exemplary embodiment of the shaft-like KamirJcühlers is shown in FIG of the invention shown in

BATH ORIGINM.

809810 / Ü628

Fig. 1 in a vertical axial section j

Fig. 2 shows in a detail from Fig. 1 on a larger scale a section through the jacket in a vertical radial plane;

ig. 3 is a section according to III-III of Fig. 2 in even bigger Mali.

The fireplace that is in]? Ig. 1 is shown, forms an enclosed by a jacket 1 Abzugschaent for the gases to be cooled. The hollow shell 1 is made by two concentric walls, the inner wall 2 and the outer wall 3 formed j in the remaining between the two walls Cavity 5 circulates the cooling water .. On the outer wall are provided at certain intervals <* bulges 5a, which allow expansion, a rigid connection between inner wall 2 and outer wall 3 is produced by the struts 12a and 12b (FIG. 2) which the struts 12a on the upper tie, the struts 12b at the lower .cüide of the vertical shaft, section are located. At the level of these lower struts 12b holding members 11 are provided, .the the supports 13 rest.

The inner wall 2 has radial protruding into the cavity 5 Ribs 2b, radial ribs 3b corresponding to the outer wall, likewise projecting into cavity 5. Ever a rib 2b and 3b are right next to each other, as can be seen in FIG. 3. At certain intervals there are corresponding slits on both ribs

BATH ORIGINAL 809810/0628 " ^b "

ze 14a and 14b provided; Ring-shaped rods 15 are guided through the slots 14a and 14b, which are at the same height - the resistance of the rods 15 prevents a change in the distance between the walls 2 and 5; .

A water tank 4 is arranged above the shaft, the interior of which is connected on the one hand to the cavity 5 of the jacket 1 is in connection, on the other hand with the external chop guide lines 8 for the cooling water. In the hood of the container 4 small cyclones y are oaut, which act as a vapor separator and with the Outside air. Me. Lines 8 cause a division of the return flow of cooling water. This sinks in the lines 8 down and rises in the cavity 5 upwards.

Below the container 4 are 1 openings in the jacket 6 provided over which the interior of the shaft through which the smoke gases in the direction of the arrows rise, connected to a template 7 ", by means of which the gases to be cooled of the (not shown) Dedusting system are fed.

The chimney cooler shown forms a gas-tight seal in which the different thermal expansion the walls 2 and 3 can compensate without 'changing the distance between the walls. There, therefore, the danger an air inlet is prevented, is the extraction of the 00 contained in the flue gases is possible.

Claims 809810/0628 '~ ⁶ "

Claims (5)

- 6 claims 1. By a hollow dumbbell with cooling water flowing through it Surrounded shaft-like chimney for cooling gases, such as those generated in converters during steel treatment, characterized in that the jacket (1) is provided with a horizontally extending bulges (^ a) Outer wall (3) and a concentric inner wall (-2) "is formed with a rigid and flexible connection elements between the outer wall (3) and the inner wall (2) of such a nature that they in maintaining a certain radial distance between the walls (2, 3) a relative expansion of the same in the height direction enable. 2. Chimney according to claim 1, characterized in that the rigid connecting elements struts ^ 12a, 12b) serve, on the one hand (12a) in the upper part of the chimney, on the other hand (12b) at the foot of the vertical Part of the manhole near the supports (13), 3. Chimney according to claim 1 and 2, characterized in that the flexible connecting elements pairs of radial closely spaced ribs (2b, 3b) protruding into the cavity (5), one of which (2b) on the inner wall (2) and one each (3b) on the outer wall (3) is located, corresponding to each other, in the Height direction 'extending slots (14a, 14b) penetrated by a retaining ring (15). 4 · Chimney according to claim 1, characterized in that - 7 - 8 0 9810/0628 a water tank (4) is arranged in the upper extension of the chimney. 5. Chimney according to claim 4, characterized in that over near below the water tank (4)
lying breakthroughs (6) in the jacket (l) of the inner shaft to a template (7) for the to be cooled
üase is connected. 809810/0628