CS246970B1 - Section of the lining of the dissassemble chimney - Google Patents

Description

(54) Removable chimney lining Dii

The removable chimney lining part consists of an inner surface layer (7) and a support part (8) of an outer surface layer of fibrous inorganic material impregnated with at least one side with a refractory sealant, the heat insulating layer (4) of fibrous material between these jacket layers; Perlite, finished in the area of the bed joints of the part with heat-resistant rope! and provided on the outer surface with a protective layer (9) of laminate or sheet metal.

FIG

The invention relates to a demountable chimney part, which is intended in particular for industrial purposes and boiler houses of civil construction. It can be used 1 for temporary buildings.

Until now, steel chimney bodies have been built for this purpose, provided with a protective layer inside, possibly with thermal insulating properties. The protective layer is usually made of asbestos or asbestos-cement. In some cases, the protective layer is formed from ceramic fittings. The disadvantage of the chimney bodies formed in this way is the considerable consumption of steel alloy material and their low lifetime, which is only a few years due to the considerable aggressiveness of the flue gases. Due to the high degree of corrosion it is not possible to reuse the chimney body.

These disadvantages are overcome by the part of the removable chimney lining consisting of at least one surface layer and a heat insulating layer according to the invention. It consists in that the inner surface and optionally the supporting part of the outer surface layer consists of a heat-resistant inorganic fibrous material impregnated with a refractory sealant, the heat-insulating layer comprising at least one of the refractory fibrous material, perlite.

The refractory putty consists of 20 to 50 wt. parts of chamotte flour with a grain size of 0.4 to 0.6 mm, 15 to 25 wt. 0.5 to 5 wt. parts of quartz sand. From the viewpoint of optimum function, it is further advantageous if the thermal insulation layer in the lower or upper abutment part is provided with thermal insulating materials, such as asbestos. It is further preferred that the thermal insulation layer is provided on the outer surface with a protective, preferably fiberglass or asbestos reinforcement layer.

An advantage of the parts according to the invention is that they can be used to construct chimneys of low heights without auxiliary support structures. The construction of chimneys of the parts according to the invention does not require metal materials.

The part according to the invention can be produced with minimal material cost and the assembly of chimneys from these parts is easy and quick with minimal demands on lifting and other mechanisms.

These chimneys have extremely good resistance even to the most aggressive combustion products. Due to their construction they are easily dismantled and their individual parts can be used even after several years for the construction of another chimney at another location.

An exemplary embodiment of a stack of parts according to the invention is shown in the drawings, wherein Fig. 1 shows a cross-section through the wall of two successive chimney parts and Fig. 2 shows a section of a dismountable chimney in longitudinal section.

Example 1

A chimney was created, consisting of three basic parts. The supporting structure, which is made of steel, is bolted to the reinforced concrete foundation. Three cylindrical functional vents are attached to this support structure. Each of these vents consists of an inner surface layer T and a heat insulating layer 4. The heat insulating layer 6 is formed of a refractory fibrous material and is provided with a heat-insulating cord in the upper and lower abutments. 6 of asbestos, the diameter of which is equal to the thickness of the thermal insulation layer 4; the outer surface of the heat insulating layer 4 is provided with an outer surface layer. This outer surface layer consists of a carrier part and a protective layer 9. The inner surface layer 8 and the carrier part 8 consist of an inorganic fibrous material which is impregnated on both sides with a refractory sealant.

This sealant consists of 35 wt. parts of chamotte flour with a grain size of 0.5 mm, 20 wt. parts of water glass, 3 wt. parts of sodium fluorosilicate and 42 wt. parts of quartz sand.

The protective layer 9 is made of thin aluminum sheet cylinders.

The chimney is installed by anchoring the first part to the supporting structure, the upper bearing surface being provided with a layer of heat-resistant sealant. The following part is placed on this upper bearing surface, the inner surface layer T being inserted behind the inner sleeve 3,

246 970 formed of a material of the same composition as the inner surface layer T and embedded in the thermal insulation layer 4 of the previous part.

Example 2

The chimney according to Example 1 was formed. parts of chamotte flour with a grain size of 0.5 mm, 25 wt. parts of water glass, mass. parts of sodium fluorosilicate and 50 wt. parts of quartz sand. Also at the supporting wall 2 formed, not shown ^te sleeve made of galvanized sheet. This outer sleeve is attached to the support part by 2 radial screws. In this case, the protective layer 9, when considering placing a chimney in a particularly aggressive environment, is formed by laminating a glass fiber reinforced textile material with natural or artificial resins. In this case, this layer 2 is formed directly on the outer surface of the erected chimney body.

Claims (3)

SUBJECT OF THE INVENTION A removable chimney lining part comprising at least one layer and a heat insulating layer, characterized in that the inner surface layer (7) and optionally the support surface (8) of the outer surface layer consists of a heat-resistant inorganic fibrous material which is at least one side impregnated with a refractory sealant which consists of 20 to 50 wt. parts of chamotte flour, grain size 0.4 to 0.6 mm, 15 to 25 wt. 0.5 to 5 wt. parts of sodium fluorosilicate and 20 to 50 wt. The thermally insulating layer (4) comprises at least one of the group of refractory fibrous material, perlite, expanded refractory concrete. 2. The lining element according to claim 1, characterized in that the thermal insulating layer (4) is provided in the lower or upper abutment part with heat-free rope. (6) such as asbestos. 3. The lining part of the demountable carcass according to claims 1 and 2, characterized in that the thermal insulation layer (4) is provided on the outer surface with a protective layer (9), in particular of a fiberglass reinforced with glass or asbestos fabric or aluminum sheet. .