CA2441692A1 - Method and apparatus for producing superheated steam - Google Patents
Method and apparatus for producing superheated steam Download PDFInfo
- Publication number
- CA2441692A1 CA2441692A1 CA 2441692 CA2441692A CA2441692A1 CA 2441692 A1 CA2441692 A1 CA 2441692A1 CA 2441692 CA2441692 CA 2441692 CA 2441692 A CA2441692 A CA 2441692A CA 2441692 A1 CA2441692 A1 CA 2441692A1
- Authority
- CA
- Canada
- Prior art keywords
- furnace
- reboiler
- steam
- water
- heating
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/04—Heat supply by installation of two or more combustion apparatus, e.g. of separate combustion apparatus for the boiler and the superheater respectively
- F22B31/045—Steam generators specially adapted for burning refuse
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/12—Heat utilisation in combustion or incineration of waste
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
Abstract
Superheated steam is produced without the production of steam by direct combustion. Thermal oil is heated in a furnace and used in a reboiler to produce saturated steam. A superheater in the furnace heats the saturated steam to produce superheated steam, which is used in a turbine generator to produce electricity. The furnace additionally heats intake combustion air and also condensate from the turbine exhaust, for use as feedwater in the reboiler. An apparatus for carrying out the method includes a furnace, hot oil circuit with reboiler, steam circuit with superheater, a turbine generator, a condensate circuit with water heater, and air heater.
Description
METHOD AND APPARATUS FOR PRODUCING
SUPERHEATED STEAM
Back rod and of the Invention The invention pertains to methods and apparatus for pro-ducing superheated steam, and more particularly to the production of superheated steam by means of a furnace and a hot oil-heated water-to-steam reboiler.
Superheated steam is commonly used in generators, such as turbine generators, to produce electric power. In the prior art, super-heated steam for this purpose is typically produced by means of a furnace which boils water to produce steam and then superheats the steam. Such systems are employed, for example, in sawmills and pulp plants, using wood waste as fuel in order to produce electricity for the plant while also producing steam for other process purposes, such as for heating and for drying wood.
A system in which superheated steam is produced without direct boiling of water by combustion in a furnace would be preferable to these prior art systems, for reasons of safety, stability and operating costs. It would be desirable to produce superheated steam without the production of steam by direct combustion, making use of a reboiler heated by thermal oil. It would further be desirable to provide such a system using a single source of combustion.
Summarv of the Invention The invention provides a method and apparatus for produc-ing superheated steam, preferably for use in a turbine generator.
SUPERHEATED STEAM
Back rod and of the Invention The invention pertains to methods and apparatus for pro-ducing superheated steam, and more particularly to the production of superheated steam by means of a furnace and a hot oil-heated water-to-steam reboiler.
Superheated steam is commonly used in generators, such as turbine generators, to produce electric power. In the prior art, super-heated steam for this purpose is typically produced by means of a furnace which boils water to produce steam and then superheats the steam. Such systems are employed, for example, in sawmills and pulp plants, using wood waste as fuel in order to produce electricity for the plant while also producing steam for other process purposes, such as for heating and for drying wood.
A system in which superheated steam is produced without direct boiling of water by combustion in a furnace would be preferable to these prior art systems, for reasons of safety, stability and operating costs. It would be desirable to produce superheated steam without the production of steam by direct combustion, making use of a reboiler heated by thermal oil. It would further be desirable to provide such a system using a single source of combustion.
Summarv of the Invention The invention provides a method and apparatus for produc-ing superheated steam, preferably for use in a turbine generator.
In the method of the invention, fuel is burned in a furnace to produce heat. The furnace heats oil that circulates through the flue gases from the furnace and the hot oil is circulated to a water-to-steam reboiler where the heat in the hot oil boils water to produce saturated steam. Preferably, the oil circulates back to the furnace to be reheated in a continuous circuit between the furnace and the reboiler. Saturated steam produced in the reboiler is circulated to the furnace where it is superheated. The superheated steam is preferably circulated to a turbine which drives a generator to produce electric power.
According to a preferred embodiment of the method of the invention, the furnace is also used to heat intake combustion air, by means of exchanging the heat from the hot flue gas produced by the furnace to the intake air through a heat exchanger.
According to another preferred embodiment of the method of the invention, the furnace is also used to heat water for use in the reboiler, for example by means of circulating condensed water from the turbine generator exhaust to a water heater heated by the hot flue gases produced by the furnace. The heated water is then deaerated and used as feedwater in the reboiler to generate saturated steam.
The apparatus of the invention for producing superheated steam comprises a furnace, a reboiler for heating water to produce saturated steam, a hot oil circuit for circulating oil heated by the furnace to the reboiler and back to the furnace, and a steam circuit for circulat-ing steam produced in the reboiler to a superheater in the furnace where the steam is heated to produce superheated steam. The apparatus preferably includes a turbine generator powered by the superheated steam.
According to a preferred embodiment of the method of the invention, the furnace is also used to heat intake combustion air, by means of exchanging the heat from the hot flue gas produced by the furnace to the intake air through a heat exchanger.
According to another preferred embodiment of the method of the invention, the furnace is also used to heat water for use in the reboiler, for example by means of circulating condensed water from the turbine generator exhaust to a water heater heated by the hot flue gases produced by the furnace. The heated water is then deaerated and used as feedwater in the reboiler to generate saturated steam.
The apparatus of the invention for producing superheated steam comprises a furnace, a reboiler for heating water to produce saturated steam, a hot oil circuit for circulating oil heated by the furnace to the reboiler and back to the furnace, and a steam circuit for circulat-ing steam produced in the reboiler to a superheater in the furnace where the steam is heated to produce superheated steam. The apparatus preferably includes a turbine generator powered by the superheated steam.
According to another preferred embodiment of the inven-tion, the apparatus also includes an air heater for heating intake combus-tion air for the furnace by means of hot flue gas produced by the fur-nace.
According to another embodiment of the invention, the apparatus also includes a water heater for heating water to use in the reboiler by means of hot flue gas produced by the furnace.
According to another preferred embodiment of the inven-tion, the apparatus includes a condensate tank for receiving water condensed from the turbine generator and a water circuit for conveying the condensed water from the condensate tank to the water heater and from the water heater to the reboiler.
In accordance with the method and apparatus of the inven-tion, steam is produced without direct boiling of water by combustion in the furnace, since water is converted to steam in the reboiler by means of hot oil and the superheater heats only existing steam, without itself converting water to steam. Such system of producing superheated steam is safer and more stable than one in which superheated steam is pro-duced by direct combustion. This arrangement permits a system, in jurisdictions where the operation of steam-generating systems is subject to government regulation, as in the province of British Columbia, which can be operated by steam engineers having lower qualifications than would otherwise be required if the superheated steam were produced by direct combustion. The operating costs of such a system is accordingly lower.
According to another embodiment of the invention, the apparatus also includes a water heater for heating water to use in the reboiler by means of hot flue gas produced by the furnace.
According to another preferred embodiment of the inven-tion, the apparatus includes a condensate tank for receiving water condensed from the turbine generator and a water circuit for conveying the condensed water from the condensate tank to the water heater and from the water heater to the reboiler.
In accordance with the method and apparatus of the inven-tion, steam is produced without direct boiling of water by combustion in the furnace, since water is converted to steam in the reboiler by means of hot oil and the superheater heats only existing steam, without itself converting water to steam. Such system of producing superheated steam is safer and more stable than one in which superheated steam is pro-duced by direct combustion. This arrangement permits a system, in jurisdictions where the operation of steam-generating systems is subject to government regulation, as in the province of British Columbia, which can be operated by steam engineers having lower qualifications than would otherwise be required if the superheated steam were produced by direct combustion. The operating costs of such a system is accordingly lower.
The system of the invention is also highly efficient in that a single furnace is used to heat the oil for the reboiler, the saturated steam and, optionally, intake combustion air and condensate.
These and other advantages and features of the invention will be apparent from the following description of the preferred embodi-ment, considered along with the accompanying drawing.
Brief Description of the Drawing Figure 1 is a schematic drawing of an apparatus for produc-ing and using superheated steam according to a preferred embodiment of the invention.
Description of the Preferred Embodiments The apparatus of the invention includes furnace 10 which is used for heating oil in a hot oil circuit, for heating steam to produce superheated steam, for heating intake combustion air and for heating water. Furnace 10 includes a combustion chamber 15 as well as a boiler or hot oil generator 11, in which heating is done by flue gases exiting from the combustion chamber and preferably also by radiant heating. For purposes of this specification, the term "furnace" includes both the combustion chamber and the hot oil generator. Furnace 10 has fuel intake 12 for the intake of fuel such as wood waste. Hot oil circuit 14 comprises connected conduits extending through the furnace, to a reboiler and back to the furnace. Conduit 16 extends through furnace 10 so as to receive radiant and convection heating from the combustion of fuel. Conduit 16 is preferably a set of pipes arranged in parallel and which may in whole or in part be at the walls of the furnace. They may be protected from excessive heat by the use of refractory materials and - S -by suitable positioning within the furnace. Arrangements for the posi-tioning and protection of fluid-carrying pipes within furnaces is well known in the art and need not be described further herein. Conduit 18 extends from conduit 16 to a reboiler 20. Conduit 22 extends through the reboiler 20, in which the hot oil is used to boil water to produce steam. It may comprise a set of pipes arranged in parallel to maximize heat transfer to the water in the reboiler. Again, such arrangements of pipes for heat transfer in reboilers is well known in the art. Conduit 24 returns oil from the reboiler to the furnace for repeating, connecting to conduit 16 to complete the hot oil circuit 14. Oil heated in conduit 16 is pumped, by means of a pump (not shown) in the hot oil circuit, to the reboiler 20 through conduit 18 and is pumped back to the furnace 10 through conduit 24.
The apparatus includes multiclone 26, a conventional cyclonic cleaner for cleaning flue gas produced by the furnace.
The apparatus further includes air heater 28 located down-stream from the multiclone. Intake combustion air for the furnace passes through air intake 30, through air heater 28, which is preferably a conventional heat exchanger, where it is heated by the hot flue gases escaping from the furnace, and through air duct 32 to furnace 10. Flue gases exit the furnace through conduit 34, where they are directed to a precipitator, bag house and/or a stack.
Furnace 10 includes rotary air locks 74 for the removal into receptacles 76 of ash produced by combustion in the furnace.
The steam circuit 36 of the apparatus includes conduits extending between the reboiler, furnace and a turbine generator. Steam conduit 38 extends from the reboiler 20 to the furnace 10 and conveys saturated steam produced in the reboiler to the furnace. The circuit includes a superheater 40 in the furnace, through which the saturated steam passes, being heated by radiant and convectional heating in the furnace to superheated steam. The superheater preferably takes the form of a set of pipes arranged in parallel, in a suitable region of the furnace, for example in the hot oil generator region 11, to effect heat transfer to the steam therein. Conduit 42 conveys the superheated steam from the superheater to turbine 43, which has conventional electric power generator 44 operationally connected thereto.
Steam extraction circuit 46 is provided to extract steam at pressures between the turbine inlet and exhaust pressures for other uses in the plant, such as heating the plant or drying wood. A steam condensor circuit 48 includes a condensor 50 which receives exhaust steam from the turbine generator through conduit 52.
The condensor 50 is cooled by air or water from a cooling system (not shown) and condenses the exhaust steam to water. Conduit 54 conveys the condensate to condensate tank 56. The condensate tank also has input conduit 58 to receive condensate from steam used in other plant processes and input conduit 60 to receive make-up water.
Water heater 62 is heated by hot flue gases produced by combustion in the furnace, and is preferably positioned downstream in the furnace from air heater 28. Water (condensate) is pumped through conduit 64, by a pump (not shown) in conduit 64, to water heater 62 where it is heated. Deaerator 66 receives the heated water from the water heater through conduit 68. The deaerator removes air from the water before the water is conveyed to the reboiler 22, through conduit 70, to be converted into saturated steam. The deaerator also receives steam through conduit 72 from the steam extraction circuit.
In order to produce superheated steam in accordance with the method of the invention, fuel is fed into furnace 10 and combusted.
Oil in conduit 16 is heated and is transported to reboiler 20 through hot oil circuit 14. In reboiler 20, water is heated to become saturated steam. The saturated steam is transported through conduit 38 to superheater 40 where it is heated to superheated steam. The super-heated steam, preferably used to produce electricity, is transported through conduit 42 to the turbine 43. Condensate from the turbine cooling system, with condensate from steam used in other process applications and make-up water, is heated in water heater 62 by hot flue gases, then deaerated and fed to the reboiler for the production of steam. Intake combustion air for the furnace is also heated by the hot flue gases. The process is preferably carried out on a continuous basis.
Example In an apparatus in accordance with Figure 1 for use in generating electric power in a sawmill, the furnace burns wood waste and heats thermal oil from about 425 - 475° F to about 600° F.
The oil is fed to the reboiler and generates saturated steam at about 344 psig and 437 ° F. Saturated steam produced in the reboiler is heated in the superheater to about 800 ° F. The condensate from the turbine is at a temperature of about 100 - 110 ° F and is heated in the water heater to about 250° F. The heated condensate is deaerated at a pressure of about 15 psig. It will be understood that these temperatures and pressures are examples only and may be varied as required for particular applications.
Although the invention has been described in terms of preferred embodiments, it is not intended that the invention be limited to these embodiments. Various modifications within the scope of the g invention will be apparent to those skilled in the art. The scope of the invention is defined by the claims that follow.
These and other advantages and features of the invention will be apparent from the following description of the preferred embodi-ment, considered along with the accompanying drawing.
Brief Description of the Drawing Figure 1 is a schematic drawing of an apparatus for produc-ing and using superheated steam according to a preferred embodiment of the invention.
Description of the Preferred Embodiments The apparatus of the invention includes furnace 10 which is used for heating oil in a hot oil circuit, for heating steam to produce superheated steam, for heating intake combustion air and for heating water. Furnace 10 includes a combustion chamber 15 as well as a boiler or hot oil generator 11, in which heating is done by flue gases exiting from the combustion chamber and preferably also by radiant heating. For purposes of this specification, the term "furnace" includes both the combustion chamber and the hot oil generator. Furnace 10 has fuel intake 12 for the intake of fuel such as wood waste. Hot oil circuit 14 comprises connected conduits extending through the furnace, to a reboiler and back to the furnace. Conduit 16 extends through furnace 10 so as to receive radiant and convection heating from the combustion of fuel. Conduit 16 is preferably a set of pipes arranged in parallel and which may in whole or in part be at the walls of the furnace. They may be protected from excessive heat by the use of refractory materials and - S -by suitable positioning within the furnace. Arrangements for the posi-tioning and protection of fluid-carrying pipes within furnaces is well known in the art and need not be described further herein. Conduit 18 extends from conduit 16 to a reboiler 20. Conduit 22 extends through the reboiler 20, in which the hot oil is used to boil water to produce steam. It may comprise a set of pipes arranged in parallel to maximize heat transfer to the water in the reboiler. Again, such arrangements of pipes for heat transfer in reboilers is well known in the art. Conduit 24 returns oil from the reboiler to the furnace for repeating, connecting to conduit 16 to complete the hot oil circuit 14. Oil heated in conduit 16 is pumped, by means of a pump (not shown) in the hot oil circuit, to the reboiler 20 through conduit 18 and is pumped back to the furnace 10 through conduit 24.
The apparatus includes multiclone 26, a conventional cyclonic cleaner for cleaning flue gas produced by the furnace.
The apparatus further includes air heater 28 located down-stream from the multiclone. Intake combustion air for the furnace passes through air intake 30, through air heater 28, which is preferably a conventional heat exchanger, where it is heated by the hot flue gases escaping from the furnace, and through air duct 32 to furnace 10. Flue gases exit the furnace through conduit 34, where they are directed to a precipitator, bag house and/or a stack.
Furnace 10 includes rotary air locks 74 for the removal into receptacles 76 of ash produced by combustion in the furnace.
The steam circuit 36 of the apparatus includes conduits extending between the reboiler, furnace and a turbine generator. Steam conduit 38 extends from the reboiler 20 to the furnace 10 and conveys saturated steam produced in the reboiler to the furnace. The circuit includes a superheater 40 in the furnace, through which the saturated steam passes, being heated by radiant and convectional heating in the furnace to superheated steam. The superheater preferably takes the form of a set of pipes arranged in parallel, in a suitable region of the furnace, for example in the hot oil generator region 11, to effect heat transfer to the steam therein. Conduit 42 conveys the superheated steam from the superheater to turbine 43, which has conventional electric power generator 44 operationally connected thereto.
Steam extraction circuit 46 is provided to extract steam at pressures between the turbine inlet and exhaust pressures for other uses in the plant, such as heating the plant or drying wood. A steam condensor circuit 48 includes a condensor 50 which receives exhaust steam from the turbine generator through conduit 52.
The condensor 50 is cooled by air or water from a cooling system (not shown) and condenses the exhaust steam to water. Conduit 54 conveys the condensate to condensate tank 56. The condensate tank also has input conduit 58 to receive condensate from steam used in other plant processes and input conduit 60 to receive make-up water.
Water heater 62 is heated by hot flue gases produced by combustion in the furnace, and is preferably positioned downstream in the furnace from air heater 28. Water (condensate) is pumped through conduit 64, by a pump (not shown) in conduit 64, to water heater 62 where it is heated. Deaerator 66 receives the heated water from the water heater through conduit 68. The deaerator removes air from the water before the water is conveyed to the reboiler 22, through conduit 70, to be converted into saturated steam. The deaerator also receives steam through conduit 72 from the steam extraction circuit.
In order to produce superheated steam in accordance with the method of the invention, fuel is fed into furnace 10 and combusted.
Oil in conduit 16 is heated and is transported to reboiler 20 through hot oil circuit 14. In reboiler 20, water is heated to become saturated steam. The saturated steam is transported through conduit 38 to superheater 40 where it is heated to superheated steam. The super-heated steam, preferably used to produce electricity, is transported through conduit 42 to the turbine 43. Condensate from the turbine cooling system, with condensate from steam used in other process applications and make-up water, is heated in water heater 62 by hot flue gases, then deaerated and fed to the reboiler for the production of steam. Intake combustion air for the furnace is also heated by the hot flue gases. The process is preferably carried out on a continuous basis.
Example In an apparatus in accordance with Figure 1 for use in generating electric power in a sawmill, the furnace burns wood waste and heats thermal oil from about 425 - 475° F to about 600° F.
The oil is fed to the reboiler and generates saturated steam at about 344 psig and 437 ° F. Saturated steam produced in the reboiler is heated in the superheater to about 800 ° F. The condensate from the turbine is at a temperature of about 100 - 110 ° F and is heated in the water heater to about 250° F. The heated condensate is deaerated at a pressure of about 15 psig. It will be understood that these temperatures and pressures are examples only and may be varied as required for particular applications.
Although the invention has been described in terms of preferred embodiments, it is not intended that the invention be limited to these embodiments. Various modifications within the scope of the g invention will be apparent to those skilled in the art. The scope of the invention is defined by the claims that follow.
Claims (14)
1. An apparatus for producing superheated steam, comprising:
(a) a furnace for burning fuel and producing heat therefrom;
(b) a reboiler for heating water to produce saturated steam;
(c) a hot oil circuit for conveying oil, extending through said furnace, in which said oil is heated, to said reboiler, through said reboiler and returning to said furnace; and (d) a steam circuit for conveying steam, extending from said reboiler, in which said saturated steam is produced, to said furnace, and through said furnace, in which said saturated steam is heated to produce said superheated steam.
(a) a furnace for burning fuel and producing heat therefrom;
(b) a reboiler for heating water to produce saturated steam;
(c) a hot oil circuit for conveying oil, extending through said furnace, in which said oil is heated, to said reboiler, through said reboiler and returning to said furnace; and (d) a steam circuit for conveying steam, extending from said reboiler, in which said saturated steam is produced, to said furnace, and through said furnace, in which said saturated steam is heated to produce said superheated steam.
2. An apparatus according to claim 1, further comprising a turbine powered by said superheated steam, and in which said steam circuit further extends from said furnace to said turbine.
3. An apparatus according to claim 1 or 2, further comprising an air heater for heating intake combustion air for said furnace by means of hot flue gas produced by said furnace.
4. An apparatus according to any one of claims 1 to 3, further comprising a water heater for heating water for use in said reboiler by means of hot flue gas produced by said furnace.
5. An apparatus according to claim 2, further comprising:
(e) a water heater for heating water for use in said reboiler by means of hot flue gas produced by said furnace;
(f) a condensate tank for receiving water condensed from said turbine; and (g) a water circuit for conveying said condensed water from said condensate tank to said water heater and from said water heater to said reboiler.
(e) a water heater for heating water for use in said reboiler by means of hot flue gas produced by said furnace;
(f) a condensate tank for receiving water condensed from said turbine; and (g) a water circuit for conveying said condensed water from said condensate tank to said water heater and from said water heater to said reboiler.
6. An apparatus according to claim 5, further comprising an air heater for heating intake combustion air for said furnace by means of hot flue gas produced by said furnace.
7. A method of producing superheated steam, comprising the steps of:
(a) burning fuel in a furnace to produce heat;
(b) heating oil in said furnace by circulating oil through said furnace;
(c) heating water in a reboiler to produce saturated steam by circulating said heated oil from said furnace through said reboiler; and (d) heating said saturated steam produced in said reboiler by circulating said saturated steam through said furnace to produce said superheated steam.
(a) burning fuel in a furnace to produce heat;
(b) heating oil in said furnace by circulating oil through said furnace;
(c) heating water in a reboiler to produce saturated steam by circulating said heated oil from said furnace through said reboiler; and (d) heating said saturated steam produced in said reboiler by circulating said saturated steam through said furnace to produce said superheated steam.
8. A method according to claim 7, further comprising the step of:
(e) circulating said oil from step (c) that has circulated through said reboiler to said furnace for use in step (b);
(e) circulating said oil from step (c) that has circulated through said reboiler to said furnace for use in step (b);
9. A method according to claim 7 or 8, further comprising the step of:
(f) circulating said superheated steam to a turbine and extracting power therefrom.
(f) circulating said superheated steam to a turbine and extracting power therefrom.
10. A method according to any one of claims 7 to 9, further comprising the step of:
(g) heating intake combustion air for said furnace by circulating said intake combustion air and hot flue gas from said furnace through a heat exchanger.
(g) heating intake combustion air for said furnace by circulating said intake combustion air and hot flue gas from said furnace through a heat exchanger.
11. A method according to claim 9, further comprising the step of:
(h) heating water for use in said reboiler by circulating said water and hot flue gas from said furnace through a water heater.
(h) heating water for use in said reboiler by circulating said water and hot flue gas from said furnace through a water heater.
12. A method according to claim 11 wherein said water is water that is condensed from said superheated steam used in said turbine.
13. A method according to claim 11 or 12, further comprising the step of:
(i) heating intake combustion air for said furnace by circulating said intake combustion air and hot flue gas from said furnace through a heat exchanger.
(i) heating intake combustion air for said furnace by circulating said intake combustion air and hot flue gas from said furnace through a heat exchanger.
14. A method according to claim 11, further comprising the step of:
(j) circulating said heated water produced in step (h) to said reboiler for use in step (c).
(j) circulating said heated water produced in step (h) to said reboiler for use in step (c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2441692 CA2441692A1 (en) | 2003-09-19 | 2003-09-19 | Method and apparatus for producing superheated steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2441692 CA2441692A1 (en) | 2003-09-19 | 2003-09-19 | Method and apparatus for producing superheated steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2441692A1 true CA2441692A1 (en) | 2005-03-19 |
Family
ID=34318759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2441692 Abandoned CA2441692A1 (en) | 2003-09-19 | 2003-09-19 | Method and apparatus for producing superheated steam |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2441692A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1830038A1 (en) * | 2006-03-01 | 2007-09-05 | Francesco Fuduli | Cogeneration plant and method |
| EP2202474A1 (en) | 2008-12-23 | 2010-06-30 | Kronotec Ag | Drying system for products of wood disintegration |
| US8206471B1 (en) | 2008-05-15 | 2012-06-26 | American Bio Energy Converting Corp. | Systems, apparatus and methods for optimizing the production of energy products from biomass, such as sawmill waste |
| US8353973B2 (en) | 2008-05-15 | 2013-01-15 | Tharpe Jr Johnny M | Apparatus, system, and method for producing bio-fuel utilizing concentric-chambered pyrolysis |
| US9068121B1 (en) | 2013-03-13 | 2015-06-30 | Johnny Marion Tharpe, Jr. | Systems, apparatus and methods for optimizing the pyrolysis of biomass using thermal expansion |
| US9447325B1 (en) | 2013-03-12 | 2016-09-20 | Johnny Marion Tharpe, Jr. | Pyrolysis oil composition derived from biomass and petroleum feedstock and related systems and methods |
| US9663719B1 (en) | 2008-05-15 | 2017-05-30 | Johnny M. Tharpe, Jr. | Systems, apparatus and methods for optimizing the rapid pyrolysis of biomass |
-
2003
- 2003-09-19 CA CA 2441692 patent/CA2441692A1/en not_active Abandoned
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1830038A1 (en) * | 2006-03-01 | 2007-09-05 | Francesco Fuduli | Cogeneration plant and method |
| US8206471B1 (en) | 2008-05-15 | 2012-06-26 | American Bio Energy Converting Corp. | Systems, apparatus and methods for optimizing the production of energy products from biomass, such as sawmill waste |
| US8353973B2 (en) | 2008-05-15 | 2013-01-15 | Tharpe Jr Johnny M | Apparatus, system, and method for producing bio-fuel utilizing concentric-chambered pyrolysis |
| US9663719B1 (en) | 2008-05-15 | 2017-05-30 | Johnny M. Tharpe, Jr. | Systems, apparatus and methods for optimizing the rapid pyrolysis of biomass |
| EP2202474A1 (en) | 2008-12-23 | 2010-06-30 | Kronotec Ag | Drying system for products of wood disintegration |
| EP2202474B1 (en) * | 2008-12-23 | 2011-06-29 | Kronotec AG | Drying system for products of wood disintegration |
| US9447325B1 (en) | 2013-03-12 | 2016-09-20 | Johnny Marion Tharpe, Jr. | Pyrolysis oil composition derived from biomass and petroleum feedstock and related systems and methods |
| US11242495B1 (en) | 2013-03-12 | 2022-02-08 | Johnny Marion Tharpe, Jr. | Pyrolysis oil composition derived from biomass and petroleum feedstock and related systems and methods |
| US9068121B1 (en) | 2013-03-13 | 2015-06-30 | Johnny Marion Tharpe, Jr. | Systems, apparatus and methods for optimizing the pyrolysis of biomass using thermal expansion |
| US9719020B1 (en) | 2013-03-13 | 2017-08-01 | Johnny Marion Tharpe, Jr. | Systems, apparatus and methods for optimizing the pyrolysis of biomass using thermal expansion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101422430B1 (en) | Hybrid biomass process with reheat cycle | |
| RU2009333C1 (en) | Combined steam-gas power plant and method of its operation | |
| EP2253807A1 (en) | Gas turbine cycle or combined steam-gas cycle for production of power from solid fuels and waste heat | |
| CN106152093B (en) | The fuel-fired steam power cycle heat power generating system and its technique of full backheat | |
| SU1521284A3 (en) | Power plant | |
| CN110397481A (en) | Promote the waste incineration and generating electricity device of main steam condition | |
| RU156586U1 (en) | BINAR STEAM GAS INSTALLATION | |
| CA2441692A1 (en) | Method and apparatus for producing superheated steam | |
| JP3905967B2 (en) | Power generation / hot water system | |
| RU2309261C2 (en) | Method of operation of thermal power station | |
| CZ300521B6 (en) | Method for operating steam turbine installation and steam turbine installation operated by this method | |
| CN105972634B (en) | A kind of Steam Power Circulation heat power generating system and its technique | |
| RU168003U1 (en) | Binary Combined Cycle Plant | |
| RU1838636C (en) | Combined steam-and-gas turbine power station and method of recovery of thermal energy of fuel at this station | |
| RU2006127505A (en) | METHOD OF WORK OF THE HEAT ELECTRIC STATION | |
| JPH08501381A (en) | Methods and equipment for producing high steam temperatures when burning problematic fuels | |
| RU167924U1 (en) | Binary Combined Cycle Plant | |
| RU2317426C2 (en) | Method of operation of thermal power station | |
| JPS60138213A (en) | Composite cycle waste heat recovery power generating plant | |
| RU2143638C1 (en) | Circuit arrangement for steam generators to recover low-potential heat of stack gases | |
| RU2783424C1 (en) | Combined-cycle plant with a steam turbine compressor drive, a regenerative air heater and a high-pressure steam generator | |
| RU2533593C1 (en) | Combined-cycle plant with steam turbine drive of compressor and high-pressure steam generator | |
| SU1617161A1 (en) | District heating steam-gas plant | |
| RU2273740C1 (en) | Method of operation of gas-steam thermoelectric plant | |
| RU2185568C1 (en) | Method of operation of boiler plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |