US2881741A - Forced flow steam generating system - Google Patents
Forced flow steam generating system Download PDFInfo
- Publication number
- US2881741A US2881741A US476188A US47618854A US2881741A US 2881741 A US2881741 A US 2881741A US 476188 A US476188 A US 476188A US 47618854 A US47618854 A US 47618854A US 2881741 A US2881741 A US 2881741A
- Authority
- US
- United States
- Prior art keywords
- operating medium
- heat exchanger
- conduit
- vapor
- pressure
- 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.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 description 13
- 239000007788 liquid Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/20—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by combustion gases of main boiler
- F01K3/22—Controlling, e.g. starting, stopping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
- F22B35/06—Control systems for steam boilers for steam boilers of forced-flow type
- F22B35/10—Control systems for steam boilers for steam boilers of forced-flow type of once-through type
- F22B35/107—Control systems with auxiliary heating surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G5/00—Controlling superheat temperature
- F22G5/16—Controlling superheat temperature by indirectly cooling or heating the superheated steam in auxiliary enclosed heat-exchanger
Definitions
- the present invention relates to a forced flow vapor generator provided with a conduit for diverting operating medium from the tube system of the vapor generator and a heat exchanger interposed in the aforementioned conduit for transferring heat from the diverted operating medium to the liquid operating medium flowing through the vapor generator.
- the system according to the invention is characterized by a flow control means for the operating medium in the aforementioned conduit downstream of the heat exchanger. This flow control means may be actuated in accordance with the pressure of the diverted operating medium while it flows through the heat exchanger. Alternatively, the flow control means may be actuated in accordance with the temperature of the operating medium at a suitable point in the tube system or at the outlet of the vapor generator.
- vapor used in the present application includes steam. Where the word steam is used, this includes vapor of substances other than water, The term water used in the present specification includes any other operating medium in liquid state.
- the flow of operating mediumthrough the aforementioned conduit is controlled by a temperature-actuated valve disposed in the first part of the conduit.
- the heat exchanger which is heated by operating medium diverted from the tube system of the vapor generator is preferably arranged downstream, with respect to the direction of flow of the feed water, of the last feed. water heater which is heated by bleeder steam, so that advantage can be taken of the high temperature of the diverted operating medium without impairing the efliciency of the feed water heating system which receives heat from bleeder steam.
- the conduit receiving the diverted operating medium nited States Patent from the heat exchanger after the medium has released 2,881,741 Patented Apr. 14, 1959 of the vapor generator.
- the pressure in the primary side of the heat exchanger is approximately the same as the pressure in the feed water reservoir.
- a temperature is coordinated to this pressure at which the operating me.- dium condenses. If the temperature of the liquid operatingmedium in the feed water reservoir is higher than the aforementioned condensation temperature, the diverted operating medium does not condense, but flows in vapor state, without releasing heat of condensation, through the feed water reservoir and is blown into the condenser, if the pressure in the reservoir becomes too great. In this case, the heat content of the diverted operating medium is carried away by the condenser coolant and is wasted;
- a steam trap is interposed in the conduit for the diverted operating medium downstream of the heat exchanger, the pressure in the heat exchanger can 'be maintained sufiiciently high, but only the condensate is re;- moved, independently of the position of the valve at the inlet of the conduit for the diverted operating medium. This makes a satisfactory control impossible. If the pressure at the primary side of the heat exchanger is above the critical pressure, a steam trap is ineffective, because vapor and liquid have approximately the same density, and no liquid level can develop in the steam trap.
- the system according to the invention cornprises a flow control means which is interposed in the conduit receiving operating medium from the heat exchanger after it has given up heat therein.
- a flow control means which is interposed in the conduit receiving operating medium from the heat exchanger after it has given up heat therein.
- the flow control means may be actuated in accordance with the pressure in the heat exchanger. For example, a predetermined pressure may be maintained in the heat exchanger.
- the flow control means downstream of the heat exchanger will also open wider, and either condensed or vaporized operating medium will be blown off. It is also possible to arrange a temperature-controlled valve at a point downstream of the heat exchanger, instead of at the beginning of the conduit for the diverted operating medium. In this case also, the pressure reduction will essentially occur downstream of the heat exchanger, so that a sufliciently high pressure. and correspondingly high condensation temperature prevail in the heat exchanger.
- Fig. l is a diagram of a steam power plant according to the invention.
- Fig. 2 is a diagram of a modified part of the steam power plant illustrated in Fig. l.
- a condensate pump 2 draws condensate from a condenser 1, and forces it through a conduit 3 into a reservoir- 4 for liquid operating medium of the plant.
- a feed pump 5 pumps liquid operating medium from the reservoir 4 through a conduit 6 into a tube system including a primary heating surface 7 of a vapor generator 25.
- the operating medium which is preliminarily heated in the flue gas-heated heater or economizer 7 flows into the secondary or heat receiving side of a heat exchanger 8,
- the liquid operating medium is converted into vapor in the heating section 9, the vapor being conducted through a conduit 10 into a third combustion gas-heated heating section or superheater 11.
- the superheated operating medium flows through outlet means of the tube system into a main 12.and into a turbine 13 which drives an electric generator 14.
- the exhaust of the turbine 13 is conducted through a conduit 15 into the condenser 1.
- a minor portion of the operating medium is diverted from the conduit 10 by means of a conduit 16 in which a flow control means or valve 18 is inserted.
- the valve 18 is actuated by means of a device 17 which is responsive to the temperature of the operating medium in the main conduit 12.
- the valve '18 is opened when the temperature in the steam main 12 falls, and vice versa. Downstream of the valve 18, the primary side of the heat exchanger 8 is interposed in the conduit 16 for receiving heating fluid from the conduit 16.
- the operating medium supplied through the conduit 16 to the heat exchanger 8 After the operating medium supplied through the conduit 16 to the heat exchanger 8 has been cooled by releasing heat to the operating medium flowing from the heating section 7 of the vapor generator to the heating section 9 of the generator, the operating medium flows through a valve 19 into the reservoir 4.
- the valve 19 is actuated by means of a device 20 which is responsive to the pressure of the operating medium upstream of the valve 19, which is the pressure prevailing in the primary side of the heat exchanger 8.
- the valve 19 is opened when the pressure in the primary side of the heat exchanger rises, and vice versa.
- the temperature-controlled valve 18 in the conduit 16 upstream of the heat exchanger 8 is omitted, and the valve 19, which is designated by numeral 21 in Fig. 2, is actuated by the device 17 which is responsive to the temperature of the operating medium in the main conduit 12.
- the valve 21 is opened when the temperature in the steam main falls, and vice versa. Since the pressure of the operating medium upstream of the valve 21 and consequently also in the primary side of the heat exchanger 8 is approximately the same as the pressure of the operating medium in the vapor generator, the greatest possible amount of heating vapor is condensed in the heat exchanger 8, the condensate flowing through the valve 21 into the reservoir 4.
- a part of the operating medium will not be condensed in the heat exchanger 8- and will arrive in the reservoir 4 in vapor state. If the pressure in the reservoir 4 becomes too great, vapor need not be blown ofI' into the atmosphere, but is conducted through a conduit 22 into the condenser 1.
- the flow of vapor through the conduit 22 is controlled by'means of a valve 23 which is actuated by a device 24 which is responsive to excessive pressures in the reservoir 4.
- the secondary side of the heat exchanger 8 may be arranged upstream instead of downstream of the heater or economizer 7.
- the temperature-responsive flow control means 18 may be arranged at a point of the tube system difierent from the one illustrated.
- the drawing is a diagrammatic showing only. An actual plant will have a great number of additional valves arranged in the conventional manner and will probably have conventional bleeder. steam-heated preheaters for the liquid operating 1 medium.
- the heating surfaces for the operating medium and/or the turbine 13 may be subdivided in various conventional ways.
- a vapor generating system comprising a forced flow vapor generator including a vapor generating tube system, outlet means from said vapor generating tube system adapted to conduct vapor to a consumer, a source of supply of relatively cold operating medium, a pump interposed between said source of supply and said tube system for pumping operating medium from said source into and through said tube system to said outlet means, an indirect heat exchanger having a secondary or heat receiving side interposed in said tube system for flow of operating medium through said heat exchanger, a first conduit connected with a relatively hot portion of said tube system downstream of said heat exchanger and upstream of said outlet means, said first conduit being connected with the primary or heat delivery side of said heat exchanger for diverting a minor portion of the operating medium flowing through said tube system as a heating medium into said heat exchanger, a second conduit connecting the primary side of said heat exchanger with said source for returning the diverted operating medium to said source, and a flow control means interposed in said second conduit for maintaining the pressure of the operating medium in the primary side of said heat exchanger
- a vapor generating system as defined in claim 1 in which said tube system includes an evaporating section and a superheating section and in which said first conduit is connected with said tube system between said evaporating section and said superheating section.
- a vapor generating system as defined in claim 1 in which said tube system includes an economizer section and an evaporating section and in which said secondary side of said heat exchanger is interposed for operating medium flow between said economizer section and said evaporating section.
- a vapor generating. system including a flow control means interposed in said first conduit, and an actuating means connected with and responsive to the temperature of the operating medium leaving said tube system and being connected with said flow control means which is interposed in said first conduit for opening said last mentioned flow control means when the temperature of the operating medium leaving said tube system falls, and vice versa.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Description
April 14, 1959 A. BURI I 2,881,741
FORCED FLOW STEAM GENERATING SYSTEM Filed Dec. 20. 1954 2 SheetsSheet 1 1 INVENTOR.
A LFRED BUEI.
BYKXIW- A. BURI FORCED FLOW STEAM GENERATING SYSTEM April 14, 1959 2 Sheets$heet Filed Dec. 20. 1954 INVENTUR.
/] LFRED BU/Pl.
FORCED FLOW STEAM GENERATHQG SYSTEM Alfred Buri, Winterthur, Switzerland, assignor to Snlzer Freres, Societe Anonyme, Winterthur, Switzerland, a corporation of Switzerland Application December 20, 1954, Serial No. 476,188
Claims priority, application Switzerland December 24, 1953 6 Claims. (Cl. 122-.-33
The present invention relates to a forced flow vapor generator provided with a conduit for diverting operating medium from the tube system of the vapor generator and a heat exchanger interposed in the aforementioned conduit for transferring heat from the diverted operating medium to the liquid operating medium flowing through the vapor generator. The system according to the invention is characterized by a flow control means for the operating medium in the aforementioned conduit downstream of the heat exchanger. This flow control means may be actuated in accordance with the pressure of the diverted operating medium while it flows through the heat exchanger. Alternatively, the flow control means may be actuated in accordance with the temperature of the operating medium at a suitable point in the tube system or at the outlet of the vapor generator.
The term vapor used in the present application includes steam. Where the word steam is used, this includes vapor of substances other than water, The term water used in the present specification includes any other operating medium in liquid state.
It has been proposed to divert operating medium from the tube system of a forced flow vapor generator for controlling the temperature of the superheated vapor leaving the vapor generator and to use the diverted operating medium for heating operating medium flowing in liquid state to or through the tube system of the gen.- erator. For this purpose a conduit is connected to the tube system of the vapor generator for conducting heating vapor through the primary side of a heat exchanger in which the heat content of the diverted operating medium is transferred to operating medium for the vapor generator in liquid state, and for returning the divertedop crating medium after it has given upv heat to the liquid operating medium, to the circuit of the operating medium of which the vapor generator forms a part. The flow of operating mediumthrough the aforementioned conduit is controlled by a temperature-actuated valve disposed in the first part of the conduit. Since the diverted operating medium usually has a higher temperature than the temperature of bleeder steam which is used for feed water preheating in conventional steam turbine plants, the heat exchanger which is heated by operating medium diverted from the tube system of the vapor generator is preferably arranged downstream, with respect to the direction of flow of the feed water, of the last feed. water heater which is heated by bleeder steam, so that advantage can be taken of the high temperature of the diverted operating medium without impairing the efliciency of the feed water heating system which receives heat from bleeder steam.
If the conduit receiving the diverted operating medium nited States Patent from the heat exchanger after the medium has released 2,881,741 Patented Apr. 14, 1959 of the vapor generator. The pressure in the primary side of the heat exchanger is approximately the same as the pressure in the feed water reservoir. A temperature, is coordinated to this pressure at which the operating me.- dium condenses. If the temperature of the liquid operatingmedium in the feed water reservoir is higher than the aforementioned condensation temperature, the diverted operating medium does not condense, but flows in vapor state, without releasing heat of condensation, through the feed water reservoir and is blown into the condenser, if the pressure in the reservoir becomes too great. In this case, the heat content of the diverted operating medium is carried away by the condenser coolant and is wasted;
If a steam trap is interposed in the conduit for the diverted operating medium downstream of the heat exchanger, the pressure in the heat exchanger can 'be maintained sufiiciently high, but only the condensate is re;- moved, independently of the position of the valve at the inlet of the conduit for the diverted operating medium. This makes a satisfactory control impossible. If the pressure at the primary side of the heat exchanger is above the critical pressure, a steam trap is ineffective, because vapor and liquid have approximately the same density, and no liquid level can develop in the steam trap.
In contradistinction to the aforedescribed conventional arrangements, the system according to the inventioncornprises a flow control means which is interposed in the conduit receiving operating medium from the heat exchanger after it has given up heat therein. This. arrange ment affords maintenance of a sufliciently high pressure in the heat exchanger as well as diversion of an amount of' operating medium which affords a satisfactory control of the temperature of the operating medium leaving the vapor generator. The flow control means may be actuated in accordance with the pressure in the heat exchanger. For example, a predetermined pressure may be maintained in the heat exchanger. If the pressure rises, for example because the temperature-controlled valve at the inlet of the conduit for diverting operating medium opens wider, the flow control means downstream of the heat exchanger will also open wider, and either condensed or vaporized operating medium will be blown off. It is also possible to arrange a temperature-controlled valve at a point downstream of the heat exchanger, instead of at the beginning of the conduit for the diverted operating medium. In this case also, the pressure reduction will essentially occur downstream of the heat exchanger, so that a sufliciently high pressure. and correspondingly high condensation temperature prevail in the heat exchanger.
The, novel features which are considered characteristic of the invention are set forth with particularity in. the appended claims. The invention itself however and additional objects and advantages thereof will best be understood from the following description of embodiments thereof when read in conjunction with the accompanying drawing, in which Fig. l is a diagram of a steam power plant according to the invention;
Fig. 2 is a diagram of a modified part of the steam power plant illustrated in Fig. l.
The same numerals designate the same parts in both figures.
A condensate pump 2 draws condensate from a condenser 1, and forces it through a conduit 3 into a reservoir- 4 for liquid operating medium of the plant. A feed pump 5 pumps liquid operating medium from the reservoir 4 through a conduit 6 into a tube system including a primary heating surface 7 of a vapor generator 25. The operating medium which is preliminarily heated in the flue gas-heated heater or economizer 7 flows into the secondary or heat receiving side of a heat exchanger 8,
and therefrom into a second heating section 9 disposed in the combustion gas flow of the generator 25. The liquid operating medium is converted into vapor in the heating section 9, the vapor being conducted through a conduit 10 into a third combustion gas-heated heating section or superheater 11. The superheated operating medium flows through outlet means of the tube system into a main 12.and into a turbine 13 which drives an electric generator 14. The exhaust of the turbine 13 is conducted through a conduit 15 into the condenser 1.
For controlling the operation of the plant, a minor portion of the operating medium is diverted from the conduit 10 by means of a conduit 16 in which a flow control means or valve 18 is inserted. In the modification shown in Fig. l, the valve 18 is actuated by means of a device 17 which is responsive to the temperature of the operating medium in the main conduit 12. The valve '18 is opened when the temperature in the steam main 12 falls, and vice versa. Downstream of the valve 18, the primary side of the heat exchanger 8 is interposed in the conduit 16 for receiving heating fluid from the conduit 16. After the operating medium supplied through the conduit 16 to the heat exchanger 8 has been cooled by releasing heat to the operating medium flowing from the heating section 7 of the vapor generator to the heating section 9 of the generator, the operating medium flows through a valve 19 into the reservoir 4. The valve 19 is actuated by means of a device 20 which is responsive to the pressure of the operating medium upstream of the valve 19, which is the pressure prevailing in the primary side of the heat exchanger 8. The valve 19 is opened when the pressure in the primary side of the heat exchanger rises, and vice versa.
In the modification illustrated in Fig. 2, the temperature-controlled valve 18 in the conduit 16 upstream of the heat exchanger 8 is omitted, and the valve 19, which is designated by numeral 21 in Fig. 2, is actuated by the device 17 which is responsive to the temperature of the operating medium in the main conduit 12. The valve 21 is opened when the temperature in the steam main falls, and vice versa. Since the pressure of the operating medium upstream of the valve 21 and consequently also in the primary side of the heat exchanger 8 is approximately the same as the pressure of the operating medium in the vapor generator, the greatest possible amount of heating vapor is condensed in the heat exchanger 8, the condensate flowing through the valve 21 into the reservoir 4. At sufficiently wide opening of the valve 21, a part of the operating medium will not be condensed in the heat exchanger 8- and will arrive in the reservoir 4 in vapor state. If the pressure in the reservoir 4 becomes too great, vapor need not be blown ofI' into the atmosphere, but is conducted through a conduit 22 into the condenser 1. The flow of vapor through the conduit 22 is controlled by'means of a valve 23 which is actuated by a device 24 which is responsive to excessive pressures in the reservoir 4.
Many variations of the illustrated system may be made without departing from the scope of the present invention. The secondary side of the heat exchanger 8 may be arranged upstream instead of downstream of the heater or economizer 7. The temperature-responsive flow control means 18 may be arranged at a point of the tube system difierent from the one illustrated. The drawing is a diagrammatic showing only. An actual plant will have a great number of additional valves arranged in the conventional manner and will probably have conventional bleeder. steam-heated preheaters for the liquid operating 1 medium. The heating surfaces for the operating medium and/or the turbine 13 may be subdivided in various conventional ways.
What is claimed is: 1. A vapor generating system comprising a forced flow vapor generator including a vapor generating tube system, outlet means from said vapor generating tube system adapted to conduct vapor to a consumer, a source of supply of relatively cold operating medium, a pump interposed between said source of supply and said tube system for pumping operating medium from said source into and through said tube system to said outlet means, an indirect heat exchanger having a secondary or heat receiving side interposed in said tube system for flow of operating medium through said heat exchanger, a first conduit connected with a relatively hot portion of said tube system downstream of said heat exchanger and upstream of said outlet means, said first conduit being connected with the primary or heat delivery side of said heat exchanger for diverting a minor portion of the operating medium flowing through said tube system as a heating medium into said heat exchanger, a second conduit connecting the primary side of said heat exchanger with said source for returning the diverted operating medium to said source, and a flow control means interposed in said second conduit for maintaining the pressure of the operating medium in the primary side of said heat exchanger above the pressure of the operating medium in said source.
2. A vapor generating system as defined in claim 1 in which said tube system includes an evaporating section and a superheating section and in which said first conduit is connected with said tube system between said evaporating section and said superheating section.
3. A vapor generating system as defined in claim 1 in which said tube system includes an economizer section and an evaporating section and in which said secondary side of said heat exchanger is interposed for operating medium flow between said economizer section and said evaporating section.
4. A vapor generating system as defined in claim 1, including an actuating device connected with and responsive to the pressure of the operating medium in the primary side of said heat exchanger and being connected with said flow control means for opening the latter when the pressure of the operating medium in the primary side of said heat exchanger rises, and vice versa.
5. A vapor generating. system according to claim 4, including a flow control means interposed in said first conduit, and an actuating means connected with and responsive to the temperature of the operating medium leaving said tube system and being connected with said flow control means which is interposed in said first conduit for opening said last mentioned flow control means when the temperature of the operating medium leaving said tube system falls, and vice versa.
6 A vapor generating system as defined in claim 1, including an actuating device connected with and responsive to the temperature of the operating medium leaving said tube system and being connected with said flow control means for opening the latter when the temperature of the operating medium leaving said tube system falls, and vice versa.
References Cited in the file of this patent UNITED STATES PATENTS
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH2881741X | 1953-12-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2881741A true US2881741A (en) | 1959-04-14 |
Family
ID=4572508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US476188A Expired - Lifetime US2881741A (en) | 1953-12-24 | 1954-12-20 | Forced flow steam generating system |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2881741A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4075978A (en) * | 1976-09-22 | 1978-02-28 | Foster Wheeler Energy Corporation | Apparatus for heating a contaminated feedwater for steam flooding |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US207639A (en) * | 1878-09-03 | Improvement in reciprocating engines | ||
| US1732439A (en) * | 1923-04-27 | 1929-10-22 | Ruthsaccumulator Aktiebolag | Steam boiler |
| US1784426A (en) * | 1926-06-09 | 1930-12-09 | Siemens Schuckertwerke Gmbh | Apparatus for and method of generating steam |
| US1882750A (en) * | 1929-07-18 | 1932-10-18 | Babcock & Wilcox Co | Steam generator and process |
| US2115548A (en) * | 1935-04-27 | 1938-04-26 | Foster Wheeler Corp | Heating |
| US2257805A (en) * | 1936-07-07 | 1941-10-07 | Babcock & Wilcox Co | Means for regulating the temperature of superheated steam |
| DE732174C (en) * | 1937-12-22 | 1943-02-24 | Rheinmetall Borsig Ag | Forced-through pipe steam generator with an auxiliary drum installed between the evaporation section and the superheater |
| US2644308A (en) * | 1952-08-21 | 1953-07-07 | Gen Electric | Feedwater heater arrangement for steam turbine power plants |
| US2684174A (en) * | 1951-03-05 | 1954-07-20 | Smith Corp A O | Multiple tank assembly for open fermenters |
-
1954
- 1954-12-20 US US476188A patent/US2881741A/en not_active Expired - Lifetime
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US207639A (en) * | 1878-09-03 | Improvement in reciprocating engines | ||
| US1732439A (en) * | 1923-04-27 | 1929-10-22 | Ruthsaccumulator Aktiebolag | Steam boiler |
| US1784426A (en) * | 1926-06-09 | 1930-12-09 | Siemens Schuckertwerke Gmbh | Apparatus for and method of generating steam |
| US1882750A (en) * | 1929-07-18 | 1932-10-18 | Babcock & Wilcox Co | Steam generator and process |
| US2115548A (en) * | 1935-04-27 | 1938-04-26 | Foster Wheeler Corp | Heating |
| US2257805A (en) * | 1936-07-07 | 1941-10-07 | Babcock & Wilcox Co | Means for regulating the temperature of superheated steam |
| DE732174C (en) * | 1937-12-22 | 1943-02-24 | Rheinmetall Borsig Ag | Forced-through pipe steam generator with an auxiliary drum installed between the evaporation section and the superheater |
| US2684174A (en) * | 1951-03-05 | 1954-07-20 | Smith Corp A O | Multiple tank assembly for open fermenters |
| US2644308A (en) * | 1952-08-21 | 1953-07-07 | Gen Electric | Feedwater heater arrangement for steam turbine power plants |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4075978A (en) * | 1976-09-22 | 1978-02-28 | Foster Wheeler Energy Corporation | Apparatus for heating a contaminated feedwater for steam flooding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2966896A (en) | Method and apparatus for controlling the outlet temperatures of superheaters and reheaters of a steam generating plant | |
| US3277651A (en) | Steam power plant including a forced flow steam generator and a reheater | |
| US3575002A (en) | Combination fossil fuel and superheated steam nuclear power plant | |
| US3035556A (en) | Multistage steam reheating | |
| JPH01107003A (en) | Method of operating once-through type boiler | |
| US9404393B2 (en) | Combined cycle power plant | |
| US20120272649A1 (en) | Method for operating a forced-flow steam generator operating at a steam temperature above 650°c and forced-flow steam generator | |
| US2921441A (en) | Feed water preheating system for steam power plants | |
| US3035557A (en) | Method of cooling resuperheaters of a steam plant | |
| US3882680A (en) | By-pass system | |
| US3411300A (en) | Method and apparatus for sliding pressure operation of a vapor generator at subcritical and supercritical pressure | |
| US3016711A (en) | Steam turbine power plant | |
| US3212477A (en) | Forced flow steam generator and method of starting same | |
| US3032999A (en) | Steam turbine power plants | |
| US3202134A (en) | Regeneration of the heat of boiler flue gases | |
| KR830005463A (en) | Exhaust gas heat recovery system of internal combustion engine | |
| US4080789A (en) | Steam generator | |
| US2881741A (en) | Forced flow steam generating system | |
| US2681047A (en) | Method and means for indirect preheating of circulating media under quantitative control | |
| US2635587A (en) | Apparatus for preheating combustion air and feed water for steam generating plants | |
| US2257805A (en) | Means for regulating the temperature of superheated steam | |
| US3271961A (en) | Start-up system for forced flow vapor generator | |
| US2848983A (en) | Vapor or steam generating plant with resuperheaters | |
| US1732009A (en) | Method and apparatus for development of power | |
| US3097631A (en) | Combustion gas flow control in boiler flues |