CA2308655A1 - A process for manufacturing a ceramic internal pipe for a chimney, which internal pipe element has rebates at its pipe ends - Google Patents
A process for manufacturing a ceramic internal pipe for a chimney, which internal pipe element has rebates at its pipe ends Download PDFInfo
- Publication number
- CA2308655A1 CA2308655A1 CA002308655A CA2308655A CA2308655A1 CA 2308655 A1 CA2308655 A1 CA 2308655A1 CA 002308655 A CA002308655 A CA 002308655A CA 2308655 A CA2308655 A CA 2308655A CA 2308655 A1 CA2308655 A1 CA 2308655A1
- Authority
- CA
- Canada
- Prior art keywords
- internal pipe
- pipe element
- chimney
- chimney internal
- rebates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000919 ceramic Substances 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000001125 extrusion Methods 0.000 claims abstract description 6
- 238000005304 joining Methods 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
- F23J13/02—Linings; Jackets; Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
- F23J13/04—Joints; Connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/20—Joints; Connections
- F23J2213/202—Joints; Connections between duct or stack sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2213/00—Chimneys or flues
- F23J2213/30—Specific materials
- F23J2213/304—Specific materials ceramic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/13022—Manufacturing processes for the lining of conducting means, e.g. by extrusion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
- F23J2900/13023—Ducts with non-circular cross-section
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Chimneys And Flues (AREA)
Abstract
1.0 A process for manufacturing a ceramic internal pipe element for a chimney, which internal pipe element has rebates at its pipe ends for joining it to the next chimney internal pipe element.
2.0 It is known that chimney internal pipe elements of this type can be manufactured from a ceramic by an extrusion method, with the rebates being cut out of the end sections of the pipe ends after the chimney internal pipe elements have been cut into lengths.
21. In order that chimney internal pipe elements having rebates for joining them to the next chimney internal pipe element can be manufactured inexpensively, it is proposed that a chimney internal pipe element, which consists of a material comprising voids, is compressed all round from the inside to the outside to about half its wall thickness to form a rebate at one of its end sections, and is compressed all round from the outside to the inside to about half its wall thickness to form a rebate at the other of its end sections.
2.0 It is known that chimney internal pipe elements of this type can be manufactured from a ceramic by an extrusion method, with the rebates being cut out of the end sections of the pipe ends after the chimney internal pipe elements have been cut into lengths.
21. In order that chimney internal pipe elements having rebates for joining them to the next chimney internal pipe element can be manufactured inexpensively, it is proposed that a chimney internal pipe element, which consists of a material comprising voids, is compressed all round from the inside to the outside to about half its wall thickness to form a rebate at one of its end sections, and is compressed all round from the outside to the inside to about half its wall thickness to form a rebate at the other of its end sections.
Description
~CA 02308655 2000-07-18 Description Applicant: Jacob Plein-Wagner Sohne Steinzeugwarenfabrik GmbH & Co. KG
Merscheider Weg 1 Title: A process for manufacturing a ceramic internal pipe for a chimney, which internal pipe element has rebates at its pipe ends This invention relates to a process for manufacturing a ceramic internal pipe element for a chimney, which internal pipe element has rebates at its pipe ends for joining it to the next chimney internal pipe element, and relates to a chimney internal pipe element manufactured by said process.
It is known that chimney internal pipe elements of this type can be manufactured from ceramics by an extrusion method, with the rebates being cut out of the end sections of the pipe ends after the chimney internal pipe elements have been cut into lengths. However, this is only possible if the pipe is of adequate wall thickness. A thick wall thickness has the disadvantage of the considerable weight and the high usage of material which are associated therewith.
The object of the present invention is to propose a process by which a chimney internal pipe element having rebates for joining it to the next chimney internal pipe element can be manufactured inexpensively, wherein the chimney internal pipe element which is manufactured in this manner exhibits improved mechanical and thermal properties. The object is also that a chimney internal pipe element which is manufactured in this manner should have an intrinsic weight which is less than that of a comparable chimney internal pipe element which is extruded by known manufacturing methods.
This object is achieved in that the chimney internal pipe element, which consists of a material comprising voids, is compressed all round from the inside to the outside to about half its wall
Merscheider Weg 1 Title: A process for manufacturing a ceramic internal pipe for a chimney, which internal pipe element has rebates at its pipe ends This invention relates to a process for manufacturing a ceramic internal pipe element for a chimney, which internal pipe element has rebates at its pipe ends for joining it to the next chimney internal pipe element, and relates to a chimney internal pipe element manufactured by said process.
It is known that chimney internal pipe elements of this type can be manufactured from ceramics by an extrusion method, with the rebates being cut out of the end sections of the pipe ends after the chimney internal pipe elements have been cut into lengths. However, this is only possible if the pipe is of adequate wall thickness. A thick wall thickness has the disadvantage of the considerable weight and the high usage of material which are associated therewith.
The object of the present invention is to propose a process by which a chimney internal pipe element having rebates for joining it to the next chimney internal pipe element can be manufactured inexpensively, wherein the chimney internal pipe element which is manufactured in this manner exhibits improved mechanical and thermal properties. The object is also that a chimney internal pipe element which is manufactured in this manner should have an intrinsic weight which is less than that of a comparable chimney internal pipe element which is extruded by known manufacturing methods.
This object is achieved in that the chimney internal pipe element, which consists of a material comprising voids, is compressed all round from the inside to the outside to about half its wall
-2-thickness to form a rebate at one of its end sections, and is compressed all round from the outside to the inside to about half its wall thickness to form a rebate at the other of its end sections.
The chimney internal pipe element advantageously consists of a material comprising 50 % by volume of voidage.
The rebates are advantageously provided all round with a groove for receiving a seal.
A chimney internal pipe element which is manufactured by the process according to the invention is preferably produced by an extrusion method.
The voids are preferably formed as channels which extend in the longitudinal direction of the pipe and which are situated side by side spaced apart from each other.
In a further advantageous embodiment, the voids are situated between at least two pipe shells which are spaced apart from each other and which are disposed concentrically with each other.
The pipe shells advantageously have spacer ribs which are spaced apart from each other and which extend approximately radially towards the adjacent shell.
The chimney internal pipe element is preferably manufactured from a ceramic material, which consists of a plastic binder material and consists of a grog material which has a granular structure and the maximum grain diameter of which amounts to about 1/10 to 1/4 of the wall thickness of the walls between the voids/channels. The binder material is preferably clay and the grog material is preferably chamotte.
The invention is illustrated by way of example in the drawings, where:
Figure 1 is a perspective view of a section through the wall of a chimney internal pipe element with a rebate;
The chimney internal pipe element advantageously consists of a material comprising 50 % by volume of voidage.
The rebates are advantageously provided all round with a groove for receiving a seal.
A chimney internal pipe element which is manufactured by the process according to the invention is preferably produced by an extrusion method.
The voids are preferably formed as channels which extend in the longitudinal direction of the pipe and which are situated side by side spaced apart from each other.
In a further advantageous embodiment, the voids are situated between at least two pipe shells which are spaced apart from each other and which are disposed concentrically with each other.
The pipe shells advantageously have spacer ribs which are spaced apart from each other and which extend approximately radially towards the adjacent shell.
The chimney internal pipe element is preferably manufactured from a ceramic material, which consists of a plastic binder material and consists of a grog material which has a granular structure and the maximum grain diameter of which amounts to about 1/10 to 1/4 of the wall thickness of the walls between the voids/channels. The binder material is preferably clay and the grog material is preferably chamotte.
The invention is illustrated by way of example in the drawings, where:
Figure 1 is a perspective view of a section through the wall of a chimney internal pipe element with a rebate;
-3-Figures 2 to S illustrate pipe walls with different cross-sections;
Figure 6 is a longitudinal section through a pipe wall with a rebate; and Figures 7 and 8 illustrate two mutually adjacent pipe ends of two chimney internal pipe elements.
As shown in Figures 1 to 7, the wall of a ceramic internal pipe element 12 for a chimney comprises voids 2 which occupy about SO % of the total volume of the wall. As shown in the Figures with the exception of Figures 5 and 6, the voids 2 are formed as channels which extend in the longitudinal direction of the pipe and which are situated spaced apart from each other. The voids/channels 2 have a square, rectangular or parallelogram-like cross-section, and are generally disposed offset in relation to each other.
In the embodiment shown in Figure 4, the wall 1 of the chimney internal pipe element consists of a plurality of shells 3, 4, 6, 7, which extend concentrically and are spaced apart from each other, with the outer shells 3 and 4 having spacer ribs 8 which are spaced apart from each other and which extend approximately radially towards the adjacent shell. The two inner shells 6 and 7 each have spacer ribs 8 on both sides.
In the embodiment shown in Figure 5, the voids 2 are of irregular form and are distributed over the entire cross-section of the wall 1.
In the embodiment shown in Figure 3, the wall 1 consists of two shells 3 and
Figure 6 is a longitudinal section through a pipe wall with a rebate; and Figures 7 and 8 illustrate two mutually adjacent pipe ends of two chimney internal pipe elements.
As shown in Figures 1 to 7, the wall of a ceramic internal pipe element 12 for a chimney comprises voids 2 which occupy about SO % of the total volume of the wall. As shown in the Figures with the exception of Figures 5 and 6, the voids 2 are formed as channels which extend in the longitudinal direction of the pipe and which are situated spaced apart from each other. The voids/channels 2 have a square, rectangular or parallelogram-like cross-section, and are generally disposed offset in relation to each other.
In the embodiment shown in Figure 4, the wall 1 of the chimney internal pipe element consists of a plurality of shells 3, 4, 6, 7, which extend concentrically and are spaced apart from each other, with the outer shells 3 and 4 having spacer ribs 8 which are spaced apart from each other and which extend approximately radially towards the adjacent shell. The two inner shells 6 and 7 each have spacer ribs 8 on both sides.
In the embodiment shown in Figure 5, the voids 2 are of irregular form and are distributed over the entire cross-section of the wall 1.
In the embodiment shown in Figure 3, the wall 1 consists of two shells 3 and
4, which are spaced apart from each other and which are disposed concentrically with each other.
In order to manufacture the rebates, the pipe ends are reshaped in a simple manner, as shown in Figures 1 and 6, by compressing them to half the wall thickness plus half the gap thickness between the rebates, so that it is possible easily to assemble the chimney internal pipe elements.
It is possible to effect said reshaping in a simple manner since it is only the voids/channels 2 which are compressed, so that only a slight expenditure of force is necessary.
Moreover, no material has to be removed from the pipe.
In chimney internal pipe elements which are manufactured from ceramic materials by an extrusion method, a pronounced texturing of the wall occurs parallel to the voids/channels 2. Due to the compressed interposed channels Z, the reshaped end sections therefore exhibit a layer structure, as can be seen in particular from Figures l and 8. This layer structure results in a very high stability of the chimney internal pipe elements according to the invention.
As can be seen from Figures 7 and 8 in particular, the rebates at the pipe ends of a chimney internal pipe element 12 are formed by reshaping one end section from the inside to the outside to form a rebate 11 and by reshaping the other inner section from the outside to the inside to form a rebate 10. The rebates which are formed in this manner can comprise encircling grooves 13 for receiving a seal, as shown in Figure 7.
The void volume, which is formed axially in relation to the direction of pressing or in relation to the longitudinal direction of the pipe, can be formed with any profile.
Depending on the application, a pipe column made of the chimney internal pipe elements may be subjected to high temperatures. In general, steady-state temperature profiles cause no problems, even at temperatures up to 600°C. In practice, however, rates of heat-up of up to 50°C per minute can occur. In the chimney internal pipe elements which have been known hitherto, the tensile stresses which thereby occur due to the relatively poor thermal conductivity can exceed the strength of the material and can result in the formation of cracks.
The design according to the invention, which comprises voids/channels 2 in the chimney internal pipe element according to the invention, results in the widening of notch roots and therefore prevents the propagation of cracks. The volume of voids/channels can definitely be considered as a replacement for a coarse grog structure. This has the advantage that significantly finer grain size distributions can be used.
In order to manufacture the rebates, the pipe ends are reshaped in a simple manner, as shown in Figures 1 and 6, by compressing them to half the wall thickness plus half the gap thickness between the rebates, so that it is possible easily to assemble the chimney internal pipe elements.
It is possible to effect said reshaping in a simple manner since it is only the voids/channels 2 which are compressed, so that only a slight expenditure of force is necessary.
Moreover, no material has to be removed from the pipe.
In chimney internal pipe elements which are manufactured from ceramic materials by an extrusion method, a pronounced texturing of the wall occurs parallel to the voids/channels 2. Due to the compressed interposed channels Z, the reshaped end sections therefore exhibit a layer structure, as can be seen in particular from Figures l and 8. This layer structure results in a very high stability of the chimney internal pipe elements according to the invention.
As can be seen from Figures 7 and 8 in particular, the rebates at the pipe ends of a chimney internal pipe element 12 are formed by reshaping one end section from the inside to the outside to form a rebate 11 and by reshaping the other inner section from the outside to the inside to form a rebate 10. The rebates which are formed in this manner can comprise encircling grooves 13 for receiving a seal, as shown in Figure 7.
The void volume, which is formed axially in relation to the direction of pressing or in relation to the longitudinal direction of the pipe, can be formed with any profile.
Depending on the application, a pipe column made of the chimney internal pipe elements may be subjected to high temperatures. In general, steady-state temperature profiles cause no problems, even at temperatures up to 600°C. In practice, however, rates of heat-up of up to 50°C per minute can occur. In the chimney internal pipe elements which have been known hitherto, the tensile stresses which thereby occur due to the relatively poor thermal conductivity can exceed the strength of the material and can result in the formation of cracks.
The design according to the invention, which comprises voids/channels 2 in the chimney internal pipe element according to the invention, results in the widening of notch roots and therefore prevents the propagation of cracks. The volume of voids/channels can definitely be considered as a replacement for a coarse grog structure. This has the advantage that significantly finer grain size distributions can be used.
-5-Due to the extrusion method, a pronounced texturing of the wall occurs parallel to the voids/channels. This results in an anisotropic prolongation of the vapour diffusion path. The vapour diffusion resistance of the body is thus increased compared with that of a solid body made from the same material.
Furthermore, said texturing also results in high mechanical stability of the chimney internal pipe element according to the invention, particularly in the region of the rebates 10, 11 also, due to the layer formation of the channels which are pressed into one another and which extend in the longitudinal direction of the pipe. Moreover, the chimney internal pipe element according to the invention has the advantage that only 50 % of the material has to be used, which furthermore results in a SO % reduction in weight.
If predetermined breaking points are provided in the radially extending wall regions of the wall 1 of the chimney internal pipe element, fissures occur at these predetermined breaking points under the effect of thermal stresses. This results in a chimney internal pipe element which consists of a plurality of shells, similar to the chimney internal pipe element comprising two shells 3, 4 which is illustrated in Figure 3. In particular, pipes of this type can be subjected to very high thermal stresses.
Furthermore, due to the proposed formation of the rebates a pipe can be obtained which is smooth both internally and externally, so that favourable conditions of flow are present.
Furthermore, said texturing also results in high mechanical stability of the chimney internal pipe element according to the invention, particularly in the region of the rebates 10, 11 also, due to the layer formation of the channels which are pressed into one another and which extend in the longitudinal direction of the pipe. Moreover, the chimney internal pipe element according to the invention has the advantage that only 50 % of the material has to be used, which furthermore results in a SO % reduction in weight.
If predetermined breaking points are provided in the radially extending wall regions of the wall 1 of the chimney internal pipe element, fissures occur at these predetermined breaking points under the effect of thermal stresses. This results in a chimney internal pipe element which consists of a plurality of shells, similar to the chimney internal pipe element comprising two shells 3, 4 which is illustrated in Figure 3. In particular, pipes of this type can be subjected to very high thermal stresses.
Furthermore, due to the proposed formation of the rebates a pipe can be obtained which is smooth both internally and externally, so that favourable conditions of flow are present.
Claims (9)
1. A process for manufacturing a ceramic internal pipe element for a chimney, which internal pipe element has rebates at its pipe ends for joining it to the next chimney internal pipe element, characterised in that the chimney internal pipe element, which consists of a material comprising voids, is compressed all round from the inside to the outside to about half its wall thickness to form a rebate at one of its end sections (11), and is compressed all round from the outside to the inside to about half its wall thickness to form a rebate at the other of its end sections (10).
2. A process according to claim l, characterised in that the chimney internal pipe element consists of a material comprising 50 % by volume of voidage.
3. A process according to claims 1 or 2, characterised in that the rebates (10, 11) are provided all round with a groove ( 13 ) for receiving a seal.
4. A chimney internal pipe element according to any one of process claims 1 to 3, characterised in that the chimney internal pipe element (12) is produced by an extrusion method.
5. A chimney internal pipe element according to claim 4, characterised in that the voids (2) are formed as channels which extend in the longitudinal direction of the pipe and which are situated side by side spaced apart from each other.
6. A chimney internal pipe element according to claim 5, characterised in that the voids (2) are situated between at least two pipe shells (3, 4) which are spaced apart from each other and which are disposed concentrically with each other.
7. A chimney internal pipe element according to claim 6, characterised in that the pipe shells (3, 4, 6, 7) have spacer ribs (8) which are spaced apart from each other and which extend approximately radially towards the adjacent shell.
A chimney internal pipe element according to any one of claims 1 to 7, characterised in that the chimney internal pipe element is manufactured from a ceramic material, which consists of a plastic binder material and which consists of a grog material which has a granular structure and the maximum grain diameter of which amounts to about 1/10 to 1/4 of the wall thickness of the walls between the voids/channels.
9. A chimney internal pipe element according to claim 9, characterised in that the binder material is clay and the grog material is chamotte.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19922096.4 | 1999-05-17 | ||
| DE19922096A DE19922096C1 (en) | 1999-05-17 | 1999-05-17 | Method for producing a ceramic chimney inner tube element with folds on the tube ends |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2308655A1 true CA2308655A1 (en) | 2000-11-17 |
Family
ID=7907965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002308655A Abandoned CA2308655A1 (en) | 1999-05-17 | 2000-05-16 | A process for manufacturing a ceramic internal pipe for a chimney, which internal pipe element has rebates at its pipe ends |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1054213A1 (en) |
| CA (1) | CA2308655A1 (en) |
| DE (1) | DE19922096C1 (en) |
| HR (1) | HRP20000311B1 (en) |
| HU (1) | HUP0001929A3 (en) |
| NO (1) | NO20002523L (en) |
| PL (1) | PL340144A1 (en) |
| YU (1) | YU28300A (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7109550U (en) * | 1971-07-08 | Rosendahl W | Refractory air and khma channel | |
| US2001316A (en) * | 1931-06-20 | 1935-05-14 | Nat Fireproofing Corp | Conduit and method of making the same |
| US2706319A (en) * | 1951-04-10 | 1955-04-19 | Farmers And Merchants Nat Bank | Mechanism for trimming and belling clay pipe |
| FR2052032A5 (en) * | 1969-07-11 | 1971-04-09 | Schaeffer Georges | |
| DE2605196C3 (en) * | 1976-02-10 | 1980-06-26 | Cremer & Breuer Keramische Betriebe Gmbh, 5020 Frechen | Device for profiling the wall of a still deformable, in particular ceramic material be standing pipe |
| DE3317661C2 (en) * | 1983-05-14 | 1986-06-26 | Stettner & Co, 8560 Lauf | Chimney pipe |
| FR2567180A1 (en) * | 1984-07-04 | 1986-01-10 | Barattini Roberta | Ventilation or smoke-discharge pipe element for buildings |
| DE4024823C2 (en) * | 1990-08-04 | 1995-08-31 | Wienerberger Ziegelind | Chimney component for single or multi-layer chimneys |
| EP0635607B1 (en) * | 1993-07-21 | 1996-01-17 | Steinzeugwerk Ponholz GmbH & Co. KG | Chimney construction built with multiple parts |
| DE29819178U1 (en) * | 1998-10-14 | 1999-01-07 | Steinzeugwerk Ponholz GmbH & Co. KG, 93142 Maxhütte-Haidhof | Ceramic pipe for flue pipes and chimneys |
-
1999
- 1999-05-17 DE DE19922096A patent/DE19922096C1/en not_active Expired - Fee Related
-
2000
- 2000-05-08 EP EP00109703A patent/EP1054213A1/en not_active Withdrawn
- 2000-05-12 YU YU28300A patent/YU28300A/en unknown
- 2000-05-16 PL PL00340144A patent/PL340144A1/en unknown
- 2000-05-16 HU HU0001929A patent/HUP0001929A3/en unknown
- 2000-05-16 CA CA002308655A patent/CA2308655A1/en not_active Abandoned
- 2000-05-16 NO NO20002523A patent/NO20002523L/en not_active Application Discontinuation
- 2000-05-17 HR HR20000311A patent/HRP20000311B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| YU28300A (en) | 2002-10-18 |
| HUP0001929A2 (en) | 2001-05-28 |
| HU0001929D0 (en) | 2000-07-28 |
| PL340144A1 (en) | 2000-11-20 |
| HUP0001929A3 (en) | 2001-07-30 |
| EP1054213A1 (en) | 2000-11-22 |
| NO20002523L (en) | 2000-11-20 |
| DE19922096C1 (en) | 2001-02-01 |
| HRP20000311A2 (en) | 2001-04-30 |
| HRP20000311B1 (en) | 2002-04-30 |
| NO20002523D0 (en) | 2000-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7112233B2 (en) | Honeycomb filter and ceramic filter assembly | |
| EP0689639B1 (en) | A flue gas filter comprising a heating element positioned in the axial interstice between two filter segments | |
| EP1174399B1 (en) | Ceramic structure | |
| EP2296433B1 (en) | Electrical heating assembly and method for manufacturing same | |
| US9676672B2 (en) | Multi-segmented structured ceramic packing | |
| CN101517205B (en) | Filter element, in particular for filtering exhaust gases of an internal combustion engine | |
| CA2308655A1 (en) | A process for manufacturing a ceramic internal pipe for a chimney, which internal pipe element has rebates at its pipe ends | |
| KR20150013848A (en) | Thermal insulation body and method for the production thereof | |
| EP2354704A1 (en) | Heating device for generating extremely hot gases | |
| US8192832B1 (en) | Structured packing with interleaved heat-transfer surfaces | |
| CN104334270B (en) | Method of making thermal insulator | |
| DE8118849U1 (en) | THERMAL INSULATING SHEATHING FOR LONG STRETCHED CONSTRUCTION PARTS | |
| EP3069079A1 (en) | Furnace wall arrangement | |
| US7759618B2 (en) | Silicon carbide heating elements | |
| CZ20001784A3 (en) | A method for producing a ceramic chimney inner tubular member and a ceramic member with molded shoulder at the tubular ends | |
| CN1110989A (en) | Method of manufacturing a gas and/or solid material blasting device for metallurgical vessels and blasting device manufactured in accordance with the method | |
| WO1998012466A1 (en) | Method of producing a pipe section and pipe section produced by said method | |
| CA1183460A (en) | Exhaust silencer | |
| HU212400B (en) | Chimney building unit, chimney system and a method for production of the building unit | |
| EP0484491B1 (en) | Jacketed pipeline for the conveyance of gaseous or liquid media | |
| KR100888216B1 (en) | Heat-resistant high strength drain pipe and its manufacturing method | |
| CN211411948U (en) | PDC (polycrystalline diamond compact) synthesis cavity and PDC assembly block | |
| JP4119795B2 (en) | Blast furnace bottom refractory structure and tap brick | |
| AU2009101155A4 (en) | A brick | |
| RU2171179C2 (en) | Method of making hard insert for anti-skid stud and design of such insert |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |