US4681025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chimney stack having erodable liner with electrical generating capacity
Assignee: Individual
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Filing: 1986-04-22
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Granted: 1987-07-21
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Expires: 2006-04-22
Abstract
Abstract An improved design associated with the fabrication and construction of a chimney stack wherein the liner material utilized as the inner liner of the stack which comes into direct contact with the flue gases being conveyed by the chimney stack to the outside atmosphere comprises erodable material having embedded therein a resistance type electrical or thermal conductivity type alarm system capable of detecting the degree of erosion of the erodable liner of the chimney stack thereby providing the ability to monitor when reconditioning of the inner liner of a chimney stack is required. Additionally, there is also incorporated the utilization of turbine blades positioned within the stream of gas flow within the chimney stack such that the flue gases cause the turbine blades to rotate, said rotation then being converted into the generation of electrical energy for utilization outside of or in accordance with the operation of the chimney stack. Furthermore, by selectively controlling the rotation of the turbine blades and their position within the stream of gas flow within the chimney stack, there is achieved the ability to selectively generate turbulence down stream from the turbine blades' location thereby providing for the ability to selectively reduce the build up of corrosive particles on the erodable liner of the chimney stack thereby increasing the usable life of the inner liner.
Inventors
- 👤 John J. Carty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:17
CPC Classifications
F; F23; F23J; F23J13/00; F23J13/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
172 words
A new and improved chimney stack capable of conveying hot gases generated in conjunction with industrial application to a height within the atmosphere sufficient to meet current pollution standards that is capable of being monitored to detect the degree of erosion occurring to it prior to sustaining structural damage, said chimney stack comprising: (a) an outer structural support member capable of providing a stable structure capable of conveying hot gases into the elevated portions of the atmosphere; (b) an inner liner subject to erosion by said hot gases structurally affixed to said outer structural support member thereby insulating said outer structural support member from contact with said hot gases passing through said chimney stack; (c) electrical wiring embedded within said inner liner and arranged as part of an electrical circuit whose conductivity is monitored so as to detect the erosion of said inner liner; (d) monitoring circuitry incorporating said electrical wiring capable of detecting changes in the electrical conductivity of said circuitry thereby detecting the degree of erosion of said inner liner;
Claim 2
Dependent Claim
172 words
A new and improved chimney stack capable of conveying hot gases generated in conjunction with industrial application to a height within the atmosphere sufficient to meet current pollution standards that is capable of being monitored to detect the degree of erosion occurring to it prior to sustaining structural damage, said chimney stack comprising: (a) an outer structural support member capable of providing a stable structure capable of conveying hot gases into the elevated portions of the atmosphere; (b) an inner liner subject to erosion by said hot gases structurally affixed to said outer structural support member thereby insulating said outer structural support member from contact with said hot gases passing through said chimney stack; (c) electrical wiring embedded within said inner liner and arranged as part of an electrical circuit whose conductivity is monitored so as to detect the erosion of said inner liner; (d) monitoring circuitry incorporating said electrical wiring capable of detecting changes in the electrical conductivity of said circuitry thereby detecting the degree of erosion of said inner liner;
Claim 3
Dependent Claim
130 words
A new and improved chimney stack capable of conveying hot gases generated in conjunction with industrial application to a height within the atmosphere sufficient to meet current pollution standards that is capable of being monitored to detect the degree of erosion occurring to it prior to sustaining structural damage as defined in claim 1 additionally comprising: (a) turbine blades structurally affixed to said chimney stack and positioned within the stream of gas flow within said chimney stack, said turbine blades capable of being mechanically rotated about their axis as a result of the stream of gas flow passing past said turbine blades within said chimney stack; (b) electrical generating means mechanically driven by said turbine blades and capable of converting the rotational movement of said turbine blades into electrical energy.
Claim 4
Dependent Claim
119 words
A new and improved chimney stack capable of conveying hot gases generated in conjunction with industrial application to a height within the atmosphere sufficient to meet current pollution standards that is capable of being monitored to detect the degree of erosion occurring to it prior to sustaining structural damage as defined in claim 2 additionally comprising a source of mechanical and/or electrical energy capable of causing said turbine blades to selectively rotate independent of the stream of gas flow within said chimney stack so as to selectively cause air turbulence within said chimney stack downstream from the location of said turbine blades thus providing a means to selectively reduce the build up of particulate material upon said inner liner.
Claim 5
Dependent Claim
64 words
A new and improved chimney stack capable of conveying hot gases generated in conjunction with industrial application to a height within the atmosphere sufficient to meet current pollution standards that is capable of being monitored to detect the degree of erosion occurring to it prior to sustaining structural damage as defined in claim 3 wherein more than one set of turbine blades are utilized.
Claim 6
Dependent Claim
194 words
A new and improved chimney stack capable of conveying hot gases generated in conjunction with industrial application to a height within the atmosphere sufficient to meet current pollution standards that is capable of being monitored to detect the degree of erosion occurring to it prior to sustaining structural damage, said chimney stack comprising: (a) an outer structural support member capable of providing a stable structure capable of conveying hot gases into the elevated portions of the atmosphere; (b) an inner liner subject to erosion by said hot gases structurally affixed to said outer structural support member thereby insulating said outer structural support member from contact with said hot gases passing through said chimney stack; (c) thermocouple probe members embedded within said inner liner capable of detecting the temperature levels of said inner liner at each of said thermocouple probe members location by comparing said temperature readings to temperature readings of said same thermocouple probe members prior to there being any erosions of said inner liner, there thus being achieved a means to determine the degree of erosion occurring to said inner liner without the necessity of shutting down the operation of said chimney stack.
Claim 7
Dependent Claim
194 words
A new and improved chimney stack capable of conveying hot gases generated in conjunction with industrial application to a height within the atmosphere sufficient to meet current pollution standards that is capable of being monitored to detect the degree of erosion occurring to it prior to sustaining structural damage, said chimney stack comprising: (a) an outer structural support member capable of providing a stable structure capable of conveying hot gases into the elevated portions of the atmosphere; (b) an inner liner subject to erosion by said hot gases structurally affixed to said outer structural support member thereby insulating said outer structural support member from contact with said hot gases passing through said chimney stack; (c) thermocouple probe members embedded within said inner liner capable of detecting the temperature levels of said inner liner at each of said thermocouple probe members location by comparing said temperature readings to temperature readings of said same thermocouple probe members prior to there being any erosions of said inner liner, there thus being achieved a means to determine the degree of erosion occurring to said inner liner without the necessity of shutting down the operation of said chimney stack.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-20 | 1991-01-19 | 1991-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-20 | 1995-01-19 | 1995-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-20 | 1999-01-19 | 1999-07-21 | $7700.00 | Window Closed / Lapsed |