JPS60159513A - Device for removing saturated flue gas - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for removing saturated flue gases or waste gases in a temperature range in which thermoplastic materials such as plastics or rubbers and materials derived therefrom can be used.

As the operating temperature allows, saturated flue gases are today taken off from combustion plants through plastic pipes, for example glass fiber reinforced propylene pipes, or rubber or plastic coated steel pipes. Where existing combustion plants continue to be equipped with wet scrubbers, waste gas flues lined with generally refractory bricks must generally be provided with an acid-resistant coating or protective finish on the brick material against the chemical action of the waste gases. . However, instead of expensive lining, the brick-lined waste heat flue is demolished and replaced with plastic or rubber-coated steel pipe.

If, for some reason, it is decided to demolish the existing brick-lined waste gas flue or lay a pipe in the brick-lined waste gas flue instead of applying a protective finish to the brickwork. Apart from the cost of the dam to be dismantled or installed, it is also necessary to take into account the cost of the plastic pipe. It is relatively expensive to manufacture plastic or rubberized steel pipes of the necessary internal diameters to remove waste gases. Additionally, for manufacturing, transportation and assembly reasons, factories can only make such tubes up to a certain length. At the construction site, the flue gas line must then be assembled from the individual pipes.

Existing technology does not allow the waste gas removal pipes forming the waste gas flue to be made completely, ie in one piece in a factory.

Assembling and joining the individual pipes together at the construction site
It is time consuming and requires skilled labor.

When refitting an existing chimney, for example a concrete or brick lined chimney, the individual pipes must be introduced through the chimney outlet. Thus, throughout the assembly period it is necessary to have a lifting device to raise the tube on the exit side of the chimney and lower it into the interior of the chimney exit. Therefore,
The tubes must be joined together to form the waste gas flue.

In addition, at the transition point from the rigid pipeline supplying the waste gas to the waste gas flue, the installation must be provided with a device for compensating for thermal expansion to accommodate the elongation of the waste gas pipe. In addition, such compensation measures must be provided at the point of attachment of the waste gas pipe to the support structure.

As is clear from the prior art described above with respect to chimney refitting, complex and expensive measures have to be taken to render the flue gas line acid-resistant in the broad sense. Frequently, subsequent application of acid-resistant coatings or rubberized coatings of existing steel chimneys are required from industrial hygiene and /''!! safety points of view, e.g. protective finishes exposed to the air. or the performance of such work is prohibited for the reasons set forth above, because the prescribed use of is often unavoidable1
First, they require the use of solvent-containing cleaning and adhesive materials that are highly toxic and present fire and explosion hazards. It is desirable, on the one hand, to reduce the cost of the means used and, on the other hand, to reduce the costs for transporting and assembling waste gas lines.

The object of the invention is to obtain a new system which can be installed in a simple manner in waste gas conveying pipes and line systems and without having to build fixed or rigid flues for this purpose. An object of the present invention is to provide a device capable of removing saturated waste gas.

This problem is solved by the invention defined in the claims.

The invention will now be explained in detail with reference to the drawings and non-limiting embodiments.

The principle of the invention is that instead of a fixed tube of rubberized steel or plastic as hitherto used for waste gas lines, a brick-lined flue is installed in the wall compared to the surroundings, quite apart from the fixed pipe of rubberized steel or plastic. using a thin closed hose. After manufacture, the b'' flexible pouch can be assembled for storage and transportation, and rolled up at the point of use in the same manner as a fire hose. Compared to a tube with the same volume, the hose acting as a flue gas line according to the invention costs less, is lighter and easier to transport.

FIG. 1a shows a piece of such a waste gas hose 1 suspended by a strap 2' on a support cable 5 in a sleeve-like or ring-like clamping device 3. FIG. A plurality of hooks 2 are distributed over the entire circumference of the clamping device 3, from which a ring of a batten 4 fixed to the hose can be suspended. In this way one can, for example, be suspended horizontally against a moderately inclined flue gas line. The flue gas conveyed therein is largely dust-free as a result of previous wet cleaning, but as a result of the lack of slope or only limited slope, the sediment has no tendency to form a crust. Since flying ash can remain in the hose, it is advantageous to periodically subject the line to cleaning, which is simply carried out by providing a rinse connection.

The fixation of the flue gas hose 1 shown in FIG. It is suspended from the frame 6. In this way, the flue gas line can have an inclination with respect to the vertical, but in the case of a correspondingly reinforced support structure, it simultaneously serves as a chimney together with the flue gas pipe. By known means, the tension spring 7 is fastened on the one hand to the support structure and on the other hand to the flue gas line. Generally, the flue gas hose is suspended from an existing support frame, such as an existing brick-lined or concrete chimney, or from a specially erected steel or concrete buttress.

An important advance in this technology is that the flue gas line according to the invention can be manufactured in one piece in a factory, assembled for transport, folded or rolled up, and finally installed in place, for example in a chimney, at a lower chimney. The reason is that it can be easily pulled through the opening. The overall required effort and expense is very advantageously related to that of previously used methods. The manufacture of flue gas hoses is cheaper than the manufacture of even pipes, is very light, and can then be transported in ordinary trunks,
And finally, as previously indicated, the light weight and flexibility make it easier to lay or install. There is no need for compensation measures at the fixing points, which are necessary for thermal expansion in the case of rigid tubes. Because Figure 1a and Figure 1
This is because the suspension of the flue gas hose is elastic, as shown in Figure b.

FIG. 2 shows a flue gas line according to the invention with random lengths, subdivided into three sections A, B and C for ease of viewing. Each of these parts of the flexible flue gas line 1 is held by a bearing ring 20 which at the same time serves as a connecting piece, over which the flue gas hose 1 is fixed by a flange or clamp 22. ing. A bearing rim 20 is connected to a crosspiece 6', which in turn is fixed to the support frame 6. Of course, the bearing rings 20Fi are arranged over the entire flue gas line at greater distances than shown here. Each of the bearing sections A, B and C, depicted together with the clamping members, is approximately 10-20 m from each other, which corresponds to the length of the individual flue gas hose 1/1"1/// fixed by the clamp. In this embodiment, the flue gas hose 1 is preferably a rubber fabric or a special support fabric and is mechanically fixed to the bearing ring by means of a clamp. It can be made of steel or plastic, but it can also be joined together.In the case of subdividing a flue gas hose into several parts, the part of the hose that is further away from the heat source can be made of different, e.g. It can be made of cheaper and less heat resistant materials.In the case of primarily horizontal or inclined lines, a mounting support of the type shown in FIG. 1a can also be used.

This allows them to be laid (sometimes without joining) in lengths of several hundred meters.

As for the support structures, there is no need to take into account the elongation of the hose, since they have a cushion due to their elasticity. A frame 6 carrying the waste gas hose is fixed by known means. The crosspiece 6' shown in FIG. 2 can, for example, be glued directly to the brick-lined wall of the waste gas flue without being fixed to a support frame. The principle is clear from the fact that a flue gas hose made of a suitable material and of the desired length is guided over the desired position with the aid of a clamping device. It does not matter whether this arrangement is horizontal, vertical or inclined.

FIG. 2 assumes the vertically rising part of the flue gas line according to the invention in the chimney, and FIG. 3 shows its end or outlet section 3o. This outlet piece 30 corresponds to one of the bearing rings 20 and represents only a number of ring heights. As shown, the flue gas hose 1 is pulled over the outlet piece 30 and secured there by a clamp or flange 22. In order to reduce the tensile stresses on this connection, the hose is additionally fixed to the mounting 71 by means of a batten 32 fixed to the flue gas hose and by means of a clamping device 7 to the cross member 6'. Can be installed. The open piece 30 is finally supported on the crosspiece 6' with the aid of a support bracket 83, which, in the case of an existing chimney, can be bricked into its inner wall.

In the case of a support chimney, the support frame 6 is made of a correspondingly dimensioned steel tube. In the lower part of FIG. 3 it is shown how the flue gas conveying hose is additionally secured by a clamping device 7, which can be joined, welded or repented. batten board 32
is fixed.

I would like to point out that the cross section of the flue gas hose can be of any nature. Thus, rectangular, hexagonal or hexagonal cross-sections are possible as a number of planar attachments to the support structure. In order to obtain a circular or at least approximately circular cross-section, a stable ring is guided around the flue gas hose through a number of openings and is correspondingly fixed to the support structure.

It is also possible to vary the cross section of the flue gas hose over its length, which is particularly easy to solve when passing from the waste gas flue to the chimney. The passage of the flue gas hose through the support pipe can be rectangular, for example, and can also be secured with rectangular hoops. The flue gas hose can be attached to the support pipe in a rectangular or even circular manner, which is particularly easy when transitioning from a waste gas flue, which often has a square cross section, to a chimney, which generally has a circular cross section. give a solution.

It is also possible to attach the flue gas hose to the waste gas flue with a rectangular hoop, but after passing it into the chimney, it is also possible to adapt the flue gas hose to its circular cross section and to attach it with a correspondingly circular cross section. can. In particular, the entrance to a concrete or brick-lined chimney is generally of an "upright" rectangular shape so as not to weaken the cross section of the chimney.

The upper part of FIG. 4 shows possible suspensions for rectangular or circular hoops. A batten 82 fixed to the flue gas hose and distributed around its circumference is used to attach a number of tension springs 7 to the flue gas hose, which are fixed to the support structure. It is suspended elastically via a panel 32'. It is also possible to draw a rigid ring through a hole located in the batten 32 to obtain a circular cross section. However, the cross-sectional hoop is not critical, ie there is a considerable tolerance range.

The flue gas hoses used can be correspondingly reinforced with textile inserts, so that the flue gas hoses are self-supporting and do not even have to be fixed at regular intervals. Flue gas hoses may vibrate due to the non-constant flow of flue gas. This may result in excessive stresses occurring at the fixing points, or the flue gas hose may swing or vibrate to such an extent that it is damaged by the support structure. However, the flue gas hose can also be made of conventional rubber fabric, so that the flue gas hose is largely self-supporting and must be supported, fixed or suspended several times over its entire length.

In order to attribute to the example of a chimney in which the new construction may still be a supporting frame or a lining of an existing brick-lined concrete chimney, FIG. Shows where the installed flue gas line enters.

The transition from horizontal to vertical guidance is completely realized by a bend or pedestal insert K provided for this purpose, which bend insert consists of several hose sections with different diameters. In this way, a knee shape is formed, which is inserted into the flue gas line, for example by hinge 22'. The bend K can be kept free by means of the clamping device 7, but it must be borne in mind that the suspension or attachment part, which is shown here only in one plane, must be divided into parts in a suitable manner over its entire circumference. No.

The easily conceived 90° bend of a flue gas hose with a constant cross section does not give satisfactory results, and specially made bends are desirable. This bend can also be made of rubber fabric. This is because it is possible to create a properly shaped transition section with such materials. As mentioned above, the connection can be flanged, with the rubber fabric being applied between the flanges.

In the case of purely circular lines, the flue gas hose can also be pulled over a rigid line and secured with a clamp. In the case of an inexpensive and economical construction, and without using any outlet piece 30, the flue gas can be discharged into the atmosphere directly with a flue gas hose. In the case of demanding constructions, for example when it is necessary to prevent condensate from raining down, the flue gas outlet can be installed in the conventional manner, i.e. with drip catch, condensate run-off edges, etc. Can be made of plastic or rubberized steel. The connection of the flue gas hose to the flue gas outlet can be made in the same way as the inlet.

As is immediately clear from FIG. 6, an important advantage of the invention is that the damping device 7 is of course always associated with a flue gas hose, by means of a relatively simple construction, the chimney K of circular cross section Q1, That is, it is possible to lead to the inlet of the flue gas hose 1 and subsequently arrange a rectangular cross section Z, ie a rectangular inlet point, into the chimney and then again form a larger circular cross section Q2 in the chimney. Such a board is made based on a pattern taking into account the topology requirements, and the parts are joined together by well-known techniques, such as welding. A bend of the type described in connection with FIG. 5 is connected with a special end piece to the incoming or outgoing flue gas hose 1, for example by a clamp or flange 22.

The introduction of the flue gas hose according to the invention into an existing waste gas flue does not necessarily require a reduction in the passage cross section. This is undesirable, for example, if the inner diameter was already snug before the rebuild. This is taken into account by the construction measures shown in FIG. 7, which serve to maintain a perfect cross section. The pipe R, which is a chimney, has an open lower part 5 at a specific location, and the clamping device 7'
It is possible to introduce parts of

In this case, the clamping device 7', unlike the clamping device 7, receives a compression spring instead of a tension spring, which compression spring engages the batten 32 of the flue gas hose 1 and pushes it against the inner wall of the pipe R. attract to. - A cover means 70 protects the clamping device on the outside of the tube against undesired influences. As can be inferred from the drawings, the structural details of the invention are shown only schematically and it is left to the expert how to individually construct such prior art connections.

[Brief explanation of drawings]

1a and 1b are sketches showing the principle of the invention as encountered in various embodiments, and FIG. 2 shows how parts of a flexible line are joined together by a connecting piece which at the same time serves as a bearing ring. FIG. 3 shows an embodiment of the invention according to FIG. 1b with an assembled waste gas outlet; FIG. 5 shows a more general form of the pipe bend according to the invention; FIG. 6 shows further structural details of the embodiment; FIG.
The figure shows a spatial view of the passage into the chimney based on the pipe bend in figure 5, and figure 7 shows a tubular cross-section, for example the chimney shown in figure 6, with structural details that allow the use of the entire cross-section. FIG. 1...Hose 3.7@...Clamp device agent Hikaru Esaki Good agent Hikaru EsakiFIG. 2, FIG, 3

Claims (10)

[Claims] (1) Relatively thin, tubular, collapsible devices for removing saturated flue gases in the warm-blooded range that may use thermoplastic materials such as plastics or rubber, and materials derived therefrom. and/or a device characterized in that it is provided with a coilable hose, which hose can be attached to a clamping device. (2) The device according to claim 1, wherein the hose is made of plastic or rubber fabric. (3) The device of claim 1, wherein the hose is made of rubberized fabric. (4) A device according to claim 2 or 3, wherein the attached hose has a circular cross section. (5) the attached hose has a polygonal cross section;
An apparatus according to claim 2 or 8. (6) A device according to any one of claims 1 to 5, wherein the hose is configured as a fixable bend (FIG. 5). 7. Device according to claim 1, characterized in that the individual hose sections are connected into a hose by connecting pieces. (8) a rigid outlet piece is provided at the outlet of the hose;
6. A device as claimed in claim 4 or claim 5, in which a hose is pulled and secured over the outlet section. 9. The device according to claim 8, wherein the outlet piece is configured as a chimney outlet and at least a part of the hose serves as a chimney. 10. Device according to claim 4 or 5, characterized in that a clamping device arranged outside the rigid waste gas flue provides maximum fixation of the flue gas hose by its opening in the flue.