EP0088756A1 - Verfahren und anlage zur verringerung der an- und abfahrverluste, zur erhöhung der nutzbaren leistung und zur verbesserung der regelfähigkeit eines wärmekraftwerkes. - Google Patents
Verfahren und anlage zur verringerung der an- und abfahrverluste, zur erhöhung der nutzbaren leistung und zur verbesserung der regelfähigkeit eines wärmekraftwerkes.Info
- Publication number
- EP0088756A1 EP0088756A1 EP82900106A EP82900106A EP0088756A1 EP 0088756 A1 EP0088756 A1 EP 0088756A1 EP 82900106 A EP82900106 A EP 82900106A EP 82900106 A EP82900106 A EP 82900106A EP 0088756 A1 EP0088756 A1 EP 0088756A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- steam
- power
- heat
- power plant
- 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.)
- Granted
Links
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
- F01K3/004—Accumulation in the liquid branch of the circuit
Definitions
- the invention relates to a method and a system for reducing start-up and shutdown losses, for increasing the usable power and for improving the regulatability of a thermal power plant.
- start-up and shutdown times are up to one hour and more, depending on the state of the plant.
- many conventional power plant units have to be switched off regularly on weekends and at night. the so that the amount of heat released during these start-up and shutdown periods makes up a significant proportion of the total thermal energy converted.
- Control deviations of the electrical power of a power plant block from the power setpoint can only be compensated for with the time behavior of steam generation and the limited storage capacity of the steam generator, which decisively determines the control capacity of the power plant block.
- the invention has for its object to improve the economy of a power plant by reducing the start-up and start-up losses and increasing its usable performance. Another object of the invention is to improve the controllability of a power plant.
- This object is achieved in that one or more pressure heat stores are integrated into the water-steam cycle of the power station, which are recharged by supplying excess heat generated in the power station and increased heat demand by releasing storage heat in the water-steam cycle .
- the pressure heat accumulators are charged with start-up steam or shutdown steam of the power plant during the start-up and shutdown processes. During periods of high load or periods of increased power requirements for electrical power generation, the pressure heat stores return their charging energy to the water / steam cycle of the power plant.
- control deviations of the electrical power from the power setpoint of a power plant unit are at least partially compensated for by changes in the charging or discharging flow of the pressure heat accumulators.
- the power block the steam flows successively through a high pressure turbine 31, ei ⁇ nen intermediate superheater 34, an intermediate pressure turbine 32, and a double-flow low pressure turbine 33.
- the sator in a Konden ⁇ 1 condensate is ump through condensate p '2 and low- Medium-pressure preheaters 4a to 4n are fed into a feed water tank 6 and from there via a feed water pump 7 back into the steam generator.
- a bypass condensate store is designated.
- a pressure heat accumulator 21 is connected to the condensate system on the water side via lines 23, 26 and a pump 22 in shunt.
- a pressure line after the discharge pump 22 opens between the last medium-pressure low-pressure preheater 4n and in front of the feed water tank 6 into a condensate line 30.
- the pressure line can also lead directly into the feed water tank 6.
- the pressure heat accumulator 21 is connected via a line 27 to the medium pressure or reheater network of the power station block and / or to other economically suitable steam networks and steam systems with a higher steam pressure than it
- Steam is charged from the medium-pressure reheater network to charge the pressure heat accumulator 21 during an arrival or departure Via line 27, possibly with the interposition of a reducing station, introduced into the pressure heat store 21, which is pre-filled with cold condensate, and the condensate filling is heated.
- the anode shutdown steam heats a condensate flow in a regulated or unregulated manner directly or via a steam reducing station to a boiling water or hot water flow with which the pressure heat accumulator 21 is charged.
- the pressure heat accumulator 21 In power mode, the pressure heat accumulator 21 is charged with hot condensate via the low pressure / medium pressure preheaters 4a to 4n in low or partial load periods and the hot condensate flow from the same withdrawal 28, which also supplies the feed water tank 6 with steam, in a mixing preheating and degassing stage, not shown in the figure, immediately warmed up immediately before the pressure heat accumulator 21.
- hot condensate from the pressure heat accumulator is mixed via line 26, the expansion vessel 24 and the discharge pump 22, to the condensate flowing in line 30 to the feed water tank 6. If the pressure heat accumulator 21 is operated temporarily with increased pressure compared to the feed water tank 6, the hot storage discharge current in the expansion vessel 24 can be expanded to the pressure in the feed water tank 6 and introduced into the condensate line 30.
- the expansion steam flow is led via a line 35 directly into the feed water tank 6 or into a steam line 25 leading to the feed water tank 6.
- thermodynamic states of the discharge current and the feed water tank content are achieved.
- the expansion vessel 24 and the line 35 can be dispensed with and the discharge current can be conducted directly into the condensate line 30 with the enthalpy of the pressure heat storage content.
- a control safety circuit is therefore necessary which allows evaporation in the condensate line 30 and on the feed prevents water tank entry.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Turbines (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT82900106T ATE18931T1 (de) | 1981-09-19 | 1981-12-23 | Verfahren und anlage zur verringerung der anund abfahrverluste, zur erhoehung der nutzbaren leistung und zur verbesserung der regelfaehigkeit eines waermekraftwerkes. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3137371 | 1981-09-19 | ||
DE3137371A DE3137371C2 (de) | 1981-09-19 | 1981-09-19 | Anlage zur Verringerung der An- und Abfahrverluste, zur Erhöhung der nutzbaren Leistung und zur Verbesserung der Regelfähigkeit eines Wärmekraftwerkes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0088756A1 true EP0088756A1 (de) | 1983-09-21 |
EP0088756B1 EP0088756B1 (de) | 1986-04-02 |
Family
ID=6142158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82900106A Expired EP0088756B1 (de) | 1981-09-19 | 1981-12-23 | Verfahren und anlage zur verringerung der an- und abfahrverluste, zur erhöhung der nutzbaren leistung und zur verbesserung der regelfähigkeit eines wärmekraftwerkes |
Country Status (6)
Country | Link |
---|---|
US (1) | US4549401A (de) |
EP (1) | EP0088756B1 (de) |
JP (1) | JPS58501473A (de) |
AT (1) | ATE18931T1 (de) |
DE (1) | DE3137371C2 (de) |
WO (1) | WO1983001090A1 (de) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4124678A1 (de) * | 1990-08-21 | 1992-02-27 | Abb Patent Gmbh | Verfahren und einrichtung zur wiederherstellung der turbinenstellreserve nach dem ausregeln einer leistungs-sollwertaenderung in einem dampfkraftwerksblock |
JP2006233931A (ja) * | 2005-02-28 | 2006-09-07 | Miura Co Ltd | ボイラ駆動電力供給システム |
US20090192530A1 (en) | 2008-01-29 | 2009-07-30 | Insightra Medical, Inc. | Fortified mesh for tissue repair |
US8616323B1 (en) | 2009-03-11 | 2013-12-31 | Echogen Power Systems | Hybrid power systems |
EP2419621A4 (de) | 2009-04-17 | 2015-03-04 | Echogen Power Systems | System und verfahren zur verwaltung von wärmeproblemen in gasturbinenmotoren |
AU2010264462B2 (en) | 2009-06-22 | 2016-05-12 | Echogen Power Systems Inc. | System and method for managing thermal issues in one or more industrial processes |
WO2011017476A1 (en) | 2009-08-04 | 2011-02-10 | Echogen Power Systems Inc. | Heat pump with integral solar collector |
US8613195B2 (en) | 2009-09-17 | 2013-12-24 | Echogen Power Systems, Llc | Heat engine and heat to electricity systems and methods with working fluid mass management control |
US8794002B2 (en) | 2009-09-17 | 2014-08-05 | Echogen Power Systems | Thermal energy conversion method |
US8869531B2 (en) | 2009-09-17 | 2014-10-28 | Echogen Power Systems, Llc | Heat engines with cascade cycles |
US8813497B2 (en) | 2009-09-17 | 2014-08-26 | Echogen Power Systems, Llc | Automated mass management control |
US8616001B2 (en) | 2010-11-29 | 2013-12-31 | Echogen Power Systems, Llc | Driven starter pump and start sequence |
US8857186B2 (en) | 2010-11-29 | 2014-10-14 | Echogen Power Systems, L.L.C. | Heat engine cycles for high ambient conditions |
US8783034B2 (en) | 2011-11-07 | 2014-07-22 | Echogen Power Systems, Llc | Hot day cycle |
WO2013055391A1 (en) | 2011-10-03 | 2013-04-18 | Echogen Power Systems, Llc | Carbon dioxide refrigeration cycle |
EP2589761B1 (de) | 2011-11-03 | 2017-05-10 | General Electric Technology GmbH | Dampfkraftwerk mit Wärmebehälter und Verfahren zum Betrieb des Dampfkraftwerkes |
WO2013107557A2 (de) | 2012-01-19 | 2013-07-25 | Siemens Aktiengesellschaft | Hilfsdampferzeugersystem für ein kraftwerk |
KR20150143402A (ko) | 2012-08-20 | 2015-12-23 | 에코진 파워 시스템스, 엘엘씨 | 직렬 구성의 터보 펌프와 시동 펌프를 갖는 초임계 작동 유체 회로 |
US9118226B2 (en) | 2012-10-12 | 2015-08-25 | Echogen Power Systems, Llc | Heat engine system with a supercritical working fluid and processes thereof |
US9341084B2 (en) | 2012-10-12 | 2016-05-17 | Echogen Power Systems, Llc | Supercritical carbon dioxide power cycle for waste heat recovery |
US9322295B2 (en) | 2012-10-17 | 2016-04-26 | General Electric Company | Thermal energy storage unit with steam and gas turbine system |
US9376962B2 (en) | 2012-12-14 | 2016-06-28 | General Electric Company | Fuel gas heating with thermal energy storage |
CA2899163C (en) | 2013-01-28 | 2021-08-10 | Echogen Power Systems, L.L.C. | Process for controlling a power turbine throttle valve during a supercritical carbon dioxide rankine cycle |
US9638065B2 (en) | 2013-01-28 | 2017-05-02 | Echogen Power Systems, Llc | Methods for reducing wear on components of a heat engine system at startup |
WO2014138035A1 (en) | 2013-03-04 | 2014-09-12 | Echogen Power Systems, L.L.C. | Heat engine systems with high net power supercritical carbon dioxide circuits |
WO2016073252A1 (en) | 2014-11-03 | 2016-05-12 | Echogen Power Systems, L.L.C. | Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system |
US11187112B2 (en) | 2018-06-27 | 2021-11-30 | Echogen Power Systems Llc | Systems and methods for generating electricity via a pumped thermal energy storage system |
US11435120B2 (en) | 2020-05-05 | 2022-09-06 | Echogen Power Systems (Delaware), Inc. | Split expansion heat pump cycle |
MA61232A1 (fr) | 2020-12-09 | 2024-05-31 | Supercritical Storage Company Inc | Système de stockage d'énergie thermique électrique à trois réservoirs |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1770256A (en) * | 1924-12-31 | 1930-07-08 | Smekal Josef | Steam-accumulator plant |
DE628717C (de) * | 1926-10-13 | 1936-04-15 | Christian Christians | Dampfanlage zum Ausgleich von Schwankungen |
GB446061A (en) * | 1935-08-22 | 1936-04-23 | Ruths Arca Accumulators Ltd | Improvements in or relating to steam plants including hot-water accumulators |
CH204975A (de) * | 1938-01-21 | 1939-05-31 | Sulzer Ag | Verfahren und Vorrichtung zum Betreiben einer Hochdruck-Dampfkraftanlage. |
NL78792C (de) * | 1952-01-05 | |||
GB887274A (en) * | 1957-03-02 | 1962-01-17 | Siemens Schuckertwerkd Ag | A steam boiler and turbine installation |
DE1128437B (de) * | 1960-05-13 | 1962-04-26 | Siemens Ag | Dampfkraftanlage, insbesondere Blockanlage mit Zwangdurchlaufkessel |
US3564677A (en) * | 1967-11-06 | 1971-02-23 | Johnson & Johnson | Method and apparatus of treating material to change its configuration |
JPS4711600U (de) * | 1971-03-01 | 1972-10-11 | ||
DE2609622A1 (de) * | 1976-03-09 | 1977-09-15 | Babcock Ag | Verfahren und vorrichtung zur speicherung von energie in kraftwerken |
DE2620023A1 (de) * | 1976-05-06 | 1977-11-17 | Babcock Ag | Verfahren und vorrichtung zur speicherung von energie in kraftwerken |
DE2907068C2 (de) * | 1978-05-09 | 1983-09-15 | BBC Aktiengesellschaft Brown, Boveri & Cie., 5401 Baden, Aargau | Dampfkraftanlage für Grundlastbetrieb mit Einrichtung zur Deckung von Lastspitzen |
-
1981
- 1981-09-19 DE DE3137371A patent/DE3137371C2/de not_active Expired
- 1981-12-23 US US06/494,765 patent/US4549401A/en not_active Expired - Fee Related
- 1981-12-23 JP JP57500196A patent/JPS58501473A/ja active Pending
- 1981-12-23 WO PCT/EP1981/000204 patent/WO1983001090A1/en not_active Application Discontinuation
- 1981-12-23 EP EP82900106A patent/EP0088756B1/de not_active Expired
- 1981-12-23 AT AT82900106T patent/ATE18931T1/de not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO8301090A1 * |
Also Published As
Publication number | Publication date |
---|---|
US4549401A (en) | 1985-10-29 |
ATE18931T1 (de) | 1986-04-15 |
DE3137371C2 (de) | 1984-06-20 |
DE3137371A1 (de) | 1983-04-14 |
WO1983001090A1 (en) | 1983-03-31 |
JPS58501473A (ja) | 1983-09-01 |
EP0088756B1 (de) | 1986-04-02 |
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Legal Events
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