WO2015067397A1 - Thermische kraftanlage mit nutzung der abwärme eines generators - Google Patents
Thermische kraftanlage mit nutzung der abwärme eines generators Download PDFInfo
- Publication number
- WO2015067397A1 WO2015067397A1 PCT/EP2014/069867 EP2014069867W WO2015067397A1 WO 2015067397 A1 WO2015067397 A1 WO 2015067397A1 EP 2014069867 W EP2014069867 W EP 2014069867W WO 2015067397 A1 WO2015067397 A1 WO 2015067397A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- generator
- waste heat
- thermal power
- power plant
- heat
- Prior art date
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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/08—Treating solid fuels to improve their combustion by heat treatments, e.g. calcining
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/16—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being only of turbine type
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/06—Heat exchange, direct or indirect
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/08—Drying or removing water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/30—Application in turbines
- F05D2220/31—Application in turbines in steam turbines
Definitions
- the invention relates to a thermal power plant in which the waste heat of a generator can be used.
- thermal power plants usually referred to as thermal power plants or steam power plants
- great efforts are under take to convert in the combustion of fossil fuels or nuclear fission heat released with the highest possible degree of efficiency in mechanical and finally in electrical energy.
- the heat released is partly used for heating ⁇ purposes or as process heat elsewhere. To enable this use of heat, a somewhat reduced generation of electrical energy is also accepted.
- WO 2007/132312 A2 discloses a fuel drying which uses waste heat from the condenser. For this purpose, the heat is removed by a heat exchanger leading from the condenser in the cooling tower fluid circuit.
- the object of the invention is a further improvement of the WIR kung grads or the energy utilization efficiency to achieve, al ⁇ as increased production of electric energy or increased Use of released heat for other purposes.
- a thermal power plant is to provide a generator having a cooling system for the generator, wherein the released during the cooling from ⁇ heat of the generator for fuel drying, in particular for drying coal is usable. It is usually necessary to provide cooling for the generator anyway. So far, the heat is usually released unused to the environment. It is known that the waste heat can be used for heating purposes. It has now been recognized that the heat can also be used profitably for the operation of the thermal power plant. Thus, less vapor must be removed before complete relaxation, so that this steam is available for the production of electrical energy or for other purposes.
- a coolant circuit for cooling the generator, wherein the cooling medium ⁇ circuit has a heat exchanger, with the waste heat received by the coolant during cooling of the generator for heating substances to be heated can be dispensed.
- the coolant may be different fluids. In this case, gaseous fluids such as air or hydrogen come into consideration, but there are also conceivable liquid fluids such as water.
- the waste heat for feedwater pre-heating is available.
- the feed water to steam which is diverted from the turbine before it is complete relaxation, is a common measure to Stei ⁇ delay in efficiency.
- the feed water coming from the condenser is ahead of another one Heating with the waste heat of the generator can be heated.
- the signified ⁇ tet the first targeted heating of the feed water after the exit of the feed water from the condenser is effected by the waste heat of the generator. So that a slight warming can be done for example by Vice ⁇ environment heat before heating by the waste heat of the genes ⁇ rators should not be excluded. It should be said, however, that in this embodiment, prior to heating by the waste heat no other purposeful heating should take place. This is to prevent that the temperature of the feedwater is already so high that the temperature of the waste heat for He ⁇ heating is no longer sufficient. It must be remembered that temperature differences are always required to transfer the heat. Thus, a temperature difference is required to transfer the heat from the generator to the coolant and in turn to transfer a temperature difference to heat from the coolant to the feed water - or other substances to be heated.
- the waste heat is heat that occurs at a comparatively low temperature, so that normally only steam can be replaced, which would be taken at relatively low pressure and correspondingly low temperature before complete relaxation. This saves steam by using the waste heat of the generator, which can only make a manageable contribution to mechanical work and electrical energy. Nevertheless, the invention makes a relevant contribution to increase the efficiency of a thermal power plant.
- the feed water coming from the condenser can be led directly into a heat exchanger for the transfer of heat from the coolant to the feed water who ⁇ .
- Direct leadership is understood to mean that seen from lines and optionally pumps and Venti ⁇ len no essential components are present. As already stated above should be achieved so that the first substantial heating of the feed water coming from the condenser by the waste heat of the generator, ie when ahead ⁇ embodiment takes place in the heat exchanger.
- the waste heat for combustion air preheating can be used.
- the air required for combustion ie the air which carries the oxygen necessary for combustion, is sometimes preheated. It is thermodynamically more favorable to first preheat the air with heat at a lower temperature than to accept a reduction in the heat present at the combustion temperature. Since the combustion air is supplied with ambient temperature of the thermal power plant, ie with comparatively niedri ⁇ ger temperature, the preheating with the waste heat of the generator is a sensible use of waste heat. For prakti ⁇ rule implementation is usually provided a heat exchanger.
- the invention also relates to an associated method.
- the figure shows a very simplified representation of a thermal power plant.
- a boiler 1 the feed water is heated and evaporated.
- the steam is fed into a high-pressure turbine 2.
- a medium-pressure turbine 4 After the relaxation tion of the steam in the high-pressure turbine 2 leads a line 3 to a medium-pressure turbine 4.
- the steam is ge ⁇ through a line 5 to a low-pressure turbine. 6
- expansion in the low pressure turbine 6 of the steam, which already has a certain moisture is passed through ei ⁇ ne line 7 in a capacitor.
- the high-pressure turbine 2, the intermediate-pressure turbine 4 and the Niederbuchtur- bine 6 lie on a common shaft 9 which drives a generator 10, in which the mechanical energy into elekt ⁇ innovative energy is converted.
- This results in waste heat, wel ⁇ che is discharged through a coolant circuit 11.
- the coolant circuit 11 leads to a heat exchanger 12 from the condensation of steam in the condenser 8 recovered feed water is also performed in a feedwater line 13 through the heat exchanger 12.
- the discharged from the coolant ⁇ circulation 11 from the generator 10 waste heat is transferred to the feed water.
- FIG. 1 are arranged in the further course of the feedwater line 13
- Preheating stages in which the feed water is preheated with steam are preheated with steam.
- the steam is this - also not shown - taken from the low-pressure turbine 6 before complete relaxation.
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)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201480060627.4A CN105705735A (zh) | 2013-11-05 | 2014-09-18 | 利用发电机的废热的热力发电厂 |
EP14766998.0A EP3042050A1 (de) | 2013-11-05 | 2014-09-18 | Thermische kraftanlage mit nutzung der abwärme eines generators |
JP2016550962A JP2017504761A (ja) | 2013-11-05 | 2014-09-18 | 発電機からの廃熱を利用した熱発電プラント |
US15/033,231 US20160273410A1 (en) | 2013-11-05 | 2014-09-18 | Thermal power plant with use of the waste heat from a generator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20130191596 EP2868873A1 (de) | 2013-11-05 | 2013-11-05 | Thermische Kraftanlage mit Nutzung der Abwärme eines Generators |
EP13191596.9 | 2013-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015067397A1 true WO2015067397A1 (de) | 2015-05-14 |
Family
ID=49518810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/069867 WO2015067397A1 (de) | 2013-11-05 | 2014-09-18 | Thermische kraftanlage mit nutzung der abwärme eines generators |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160273410A1 (de) |
EP (2) | EP2868873A1 (de) |
JP (1) | JP2017504761A (de) |
CN (1) | CN105705735A (de) |
WO (1) | WO2015067397A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019044678A (ja) | 2017-08-31 | 2019-03-22 | 三菱重工業株式会社 | 蒸気タービンシステム及びコンバインドサイクルプラント |
JP7059347B2 (ja) * | 2020-12-24 | 2022-04-25 | 三菱重工業株式会社 | 排熱回収プラント、及びコンバインドサイクルプラント |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19753264C1 (de) * | 1997-12-01 | 1999-06-17 | Siemens Ag | Gasturbinenanlage und Verfahren zum Betreiben einer Gasturbinenanlage sowie Gas- und Dampfturbinenanlage |
WO2007132312A2 (en) * | 2006-05-17 | 2007-11-22 | Dariusz Budzinski | A process for improving efficiency, while also decreasing flue gas emissions in stations producing power and heat and the implementation system of this process |
DE202012006055U1 (de) * | 2012-06-25 | 2012-08-01 | Monika Semmler | Vorrichtung zum Erzeugen von elektrischer Energie mittels eines Organic-Rankine-Kreislaufs in Verbindung mit einem Turbinengenerator |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55142916A (en) * | 1979-04-25 | 1980-11-07 | Toshiba Corp | Recovery device of waste heat from electrical equipment |
DE4103362C1 (de) * | 1991-02-05 | 1992-04-23 | Voest Alpine Ind Anlagen | |
US20060185366A1 (en) * | 2005-02-22 | 2006-08-24 | Siemens Aktiengesellschaft | Thermal power plant |
JP5030750B2 (ja) * | 2007-11-30 | 2012-09-19 | 三菱重工業株式会社 | 石炭ガス化複合発電設備 |
CN101699207B (zh) * | 2009-11-19 | 2011-05-18 | 河北理工大学 | 提高烧结余热发电***热力循环质量的方法 |
CN103277155B (zh) * | 2013-05-20 | 2016-01-13 | 华北电力大学 | 褐煤预干燥-预热空气-余热利用复合燃煤发电*** |
-
2013
- 2013-11-05 EP EP20130191596 patent/EP2868873A1/de not_active Withdrawn
-
2014
- 2014-09-18 US US15/033,231 patent/US20160273410A1/en not_active Abandoned
- 2014-09-18 EP EP14766998.0A patent/EP3042050A1/de not_active Withdrawn
- 2014-09-18 JP JP2016550962A patent/JP2017504761A/ja active Pending
- 2014-09-18 WO PCT/EP2014/069867 patent/WO2015067397A1/de active Application Filing
- 2014-09-18 CN CN201480060627.4A patent/CN105705735A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19753264C1 (de) * | 1997-12-01 | 1999-06-17 | Siemens Ag | Gasturbinenanlage und Verfahren zum Betreiben einer Gasturbinenanlage sowie Gas- und Dampfturbinenanlage |
WO2007132312A2 (en) * | 2006-05-17 | 2007-11-22 | Dariusz Budzinski | A process for improving efficiency, while also decreasing flue gas emissions in stations producing power and heat and the implementation system of this process |
DE202012006055U1 (de) * | 2012-06-25 | 2012-08-01 | Monika Semmler | Vorrichtung zum Erzeugen von elektrischer Energie mittels eines Organic-Rankine-Kreislaufs in Verbindung mit einem Turbinengenerator |
Also Published As
Publication number | Publication date |
---|---|
CN105705735A (zh) | 2016-06-22 |
EP3042050A1 (de) | 2016-07-13 |
JP2017504761A (ja) | 2017-02-09 |
US20160273410A1 (en) | 2016-09-22 |
EP2868873A1 (de) | 2015-05-06 |
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