WO2001077500A1 - Dispositif et procede de production d'energie - Google Patents

Dispositif et procede de production d'energie Download PDF

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Publication number
WO2001077500A1
WO2001077500A1 PCT/NL2001/000292 NL0100292W WO0177500A1 WO 2001077500 A1 WO2001077500 A1 WO 2001077500A1 NL 0100292 W NL0100292 W NL 0100292W WO 0177500 A1 WO0177500 A1 WO 0177500A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
bar
fresh
installation
reheating
Prior art date
Application number
PCT/NL2001/000292
Other languages
English (en)
Inventor
Ronald De Vries
Pieter Joseph Ploumen
Hugo Johan Middelkamp
Original Assignee
N.V. Kema
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by N.V. Kema filed Critical N.V. Kema
Priority to EP01923984A priority Critical patent/EP1272739A1/fr
Priority to AU50656/01A priority patent/AU5065601A/en
Publication of WO2001077500A1 publication Critical patent/WO2001077500A1/fr

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
    • F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
    • F01K3/24—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by separately-fired heaters
    • F01K3/247—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters with heating by separately-fired heaters one heater being an incinerator
    • 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
    • F01K7/22—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 the turbines having inter-stage steam heating
    • 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

Definitions

  • the present invention relates to an installation and to a method for generating energy with a waste incineration plant ( ⁇ P)or biomass power plant. More particularly, wherein for generating energy fresh steam is used with an increased steam pressure but not with an increased steam temperature. Steam with such steam conditions (increased steam pressure at non- increased steam temperature) has the drawback that at the low pressure outlet of the turbine the prevailing moisture content is relatively high and is higher than the maximum permissible moisture content of about 12.5%.
  • US-A-5, 457, 721 describes a nuclear installation for energy generation. High-pressure steam is mixed with saturated wet steam from the nuclear installation. Further expansion of the drier steam mixture is then possible .
  • FR-A-2, 116, 671 describes a nuclear installation wherein saturated steam (35-60 bar/250-300°C) is fully expanded after steam drying with steam from the PWR. Reheating is not applied in any of the publications to improve the (electrical) efficiency.
  • the present invention has for its object to obtain an efficiency improvement in WIPs and biomass power plants by making use of reheating at increased boiler pressure.
  • the present invention is based on the insight that by reheating partially expanded steam (in particular intermediate pressure steam) not only is the moisture content decreased, but there also occurs an increase in efficiency. This is because during reheating with fresh steam the condensation heat can be used at the prevailing high temperature to reheat the steam to be expanded thereafter.
  • the decrease in the moisture content which occurs is such that in the low pressure outlet of the turbine a moisture content prevails in the order of about 10%.
  • the efficiency improvement is in the order of 3% points, for instance from 22% to 25% net efficiency.
  • the present invention therefore provides an installation for generating energy, comprising: i. a unit for generating fresh steam in the pressure of about 80 bar to about 200 bar; ii. at least one steam turbine for stepwise expansion of steam in at least two steam turbine sections; and iii. at least one reheater unit which is connected between the two steam turbine sections for indirect reheating of expanded steam to 320-450°C with fresh steam.
  • the invention also provides a method for generating energy, comprising the steps of: i. generating fresh steam in the pressure range of about 80 bar to 200 bar; ii. expanding the steam in stepwise manner; and iii. indirectly reheating expanded steam.
  • the used fresh steam at increased pressure can be saturated or superheated.
  • a steam temperature is possible of 295°C (saturated) to 380°C (superheated) ; at 200 bar a temperature of 365°C to 550°C.
  • the pressure/temperature range lies preferably between 90 bar/390°C and 150 bar/500°C.
  • a characteristic pressure/temperature for a waste incineration plant (WIP) amounts to 100 bar/400°C.
  • an installation comprises a second incineration unit with a flue gas side heat exchanger for superheating the fresh steam to about 550 °C, it is possible to superheat the fresh steam to a relatively high steam temperature, whereby the energy efficiency increases further and the moisture content after expansion decreases further.
  • An advantageous incineration unit comprises an exhaust gas boiler with a reactor for incineration and/or gasification.
  • the indirect reheating using the reheater unit is partly dependent on the pressure/temperature conditions of the fresh steam. Reheating of the steam generally takes place up to a temperature in the range of 320 -450 °C. This lower limit is lower when reheating is applied at lower pressure. Pressures of 5-80 bar, preferably 10-40 bar, such as 15-30 bar are possible.
  • the condensate formed in the installation during reheating with fresh steam can be reused to generate fresh steam and is fed back for this purpose to the unit for generating fresh stem. An optimal water balance thus results.
  • the above stated method also includes the above mentioned preferred aspects.
  • Figures 1 and 2 each show a schematic view of an installation for generating energy while applying reheating of expanded steam.
  • FIG. 1 shows an installation 1 for generating energy.
  • Installation 1 comprises a waste incineration plant with an incineration unit 2 and a steam boiler 3.
  • incineration unit 2 domestic and/or industrial waste 4 is incinerated using air to pot-ash and hot flue gas 7. With this flue gas 7 fresh steam is generated in steam boiler 3 and cold flue gas is discharged via conduit 8 to chimney 9.
  • the fresh steam is fed via conduit 10 to a steam turbine 11, which comprises turbine sections 12-14 which drive a generator 16 via a common turbine shaft 15.
  • a steam turbine 11 instead of one steam turbine 11 with three turbine sections, use can also be made of a number of different steam turbines for stepwise expansion of steam.
  • the fresh steam (100 bar/400°C) is expanded in turbine section 12 to 20 bar and guided via line 17 through a reheater unit 18, in this case a heat exchanger 18.
  • This intermediate pressure steam is reheated in reheater unit 18 against fresh steam which is likewise fed to reheater unit 18 via line 19 and leaves this unit via line 20 as condensate which is then degassed in degasser 21 and fed back via pump 22 and conduit 23 to steam boiler 3.
  • the condensate in line 20 has a temperature of 306°C.
  • the reheated steam is fed via conduit 24 to the turbine section 13 and, after expansion, via conduit 25 to turbine section 14. A part of the expanded steam is fed via line 26 to degasser 21.
  • FIG. 2 shows an installation 29 according to the invention in which in addition to the incineration unit 2 a fluidized bed incineration unit 30 is applied which is connected to chimney 9 via the flue gas duct 31 passing through an exhaust gas boiler 39.
  • Accommodated in exhaust gas boiler 39 is a heat exchanger 32 for superheating fresh steam formed in steam boiler 3 and steam formed in heat exchanger 40 which are supplied via line 33 and 41. Superheating takes place to a temperature of 520°C.
  • Via line 34 steam is fed to the first turbine section 12 of steam turbine 11 and expanded.
  • the expanded intermediate pressure steam is reheated in heat exchanger 35 and subsequently fed to turbine section 13 via conduit 36.
  • the condensate formed from the superheated steam is fed via conduit 37 to degasser 21, to which a part of the expanded steam from turbine section 13 is also fed via conduit 38.
  • the condensate has a temperature of about 306°C. From the degasser feed water is fed back via pump 22 and conduit 23 to steam boiler 3 and via line 42 to heat exchanger 40 of exhaust gas boiler 39.

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)

Abstract

L'invention concerne un dispositif destiné à produire de l'énergie. Ce dispositif comprend (i) une unité (3) de production de vapeur vive sous une pression comprise entre environ 80 bars et environ 200 bars, (ii) au moins une turbine à vapeur (11) destinée à une détente progressive de la vapeur dans au moins deux parties de turbine à vapeur (12-14), et (iii) au moins une unité de réchauffement (35) installée entre les deux parties de turbine à vapeur (12, 13) en vue d'un réchauffement indirect de vapeur détendue à 320-400 °C avec de la vapeur vive. L'invention concerne également un procédé de production d'énergie consistant (i) à produire de la vapeur vive sous une pression comprise entre environ 80 bars et 200 bars, (ii) à détendre cette vapeur de manière progressive, et (iii) à réchauffer indirectement la vapeur ainsi détendue avec de la vapeur vive jusqu'à 320-450 °C.
PCT/NL2001/000292 2000-04-11 2001-04-11 Dispositif et procede de production d'energie WO2001077500A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01923984A EP1272739A1 (fr) 2000-04-11 2001-04-11 Dispositif et procede de production d'energie
AU50656/01A AU5065601A (en) 2000-04-11 2001-04-11 Installation and method for generating energy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1014910A NL1014910C2 (nl) 2000-04-11 2000-04-11 Inrichting en werkwijze voor het opwekken van energie.
NL1014910 2000-04-11

Publications (1)

Publication Number Publication Date
WO2001077500A1 true WO2001077500A1 (fr) 2001-10-18

Family

ID=19771190

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2001/000292 WO2001077500A1 (fr) 2000-04-11 2001-04-11 Dispositif et procede de production d'energie

Country Status (4)

Country Link
EP (1) EP1272739A1 (fr)
AU (1) AU5065601A (fr)
NL (1) NL1014910C2 (fr)
WO (1) WO2001077500A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2304118A1 (es) * 2008-02-25 2008-09-01 Sener Grupo De Ingenieria, S.A Procedimiento para generar energia mediante ciclos termicos con vapor de presion elevada y temperatura moderada.
RU2499147C2 (ru) * 2012-01-18 2013-11-20 Рашид Зарифович Аминов Парогазовая установка на базе влажно-паровой аэс

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE820600C (de) * 1950-05-21 1951-11-12 Grosskraftwerk Mannheim A G Dampfkraftanlage, deren Kessel seine Verbrennungsluft aus einer Luftturbine erhaelt
FR2116671A5 (en) * 1970-12-03 1972-07-21 Babcock Atlantique Sa Central thermal power plants - esp nuclear with reheating of dry vapour using water direct from vapour generator
US5457721A (en) * 1994-05-25 1995-10-10 Battelle Memorial Institute Method and apparatus for improving the performance of a nuclear power electrical generation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE820600C (de) * 1950-05-21 1951-11-12 Grosskraftwerk Mannheim A G Dampfkraftanlage, deren Kessel seine Verbrennungsluft aus einer Luftturbine erhaelt
FR2116671A5 (en) * 1970-12-03 1972-07-21 Babcock Atlantique Sa Central thermal power plants - esp nuclear with reheating of dry vapour using water direct from vapour generator
US5457721A (en) * 1994-05-25 1995-10-10 Battelle Memorial Institute Method and apparatus for improving the performance of a nuclear power electrical generation system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2304118A1 (es) * 2008-02-25 2008-09-01 Sener Grupo De Ingenieria, S.A Procedimiento para generar energia mediante ciclos termicos con vapor de presion elevada y temperatura moderada.
WO2009106657A1 (fr) * 2008-02-25 2009-09-03 Sener Grupo De Ingenieria, S.A. Procédé pour générer de l'énergie au moyen de cycles thermiques à vapeur de pression élevée et température modérée
EP2264287A1 (fr) * 2008-02-25 2010-12-22 Sener Grupo de Ingenieria, S.A. Procédé pour générer de l'énergie au moyen de cycles thermiques à vapeur de pression élevée et température modérée
CN102016240A (zh) * 2008-02-25 2011-04-13 塞纳尔工程集团有限公司 通过利用高压和适中温度的蒸汽的热循环产生能量的方法
US20120000202A1 (en) * 2008-02-25 2012-01-05 Sener Grupo De Ingenieria, S.A. Method for generating energy by means of thermal cycles with high pressure and moderate temperature steam
EP2264287A4 (fr) * 2008-02-25 2013-04-03 Sener Grupo De Ingenieria Sa Procédé pour générer de l'énergie au moyen de cycles thermiques à vapeur de pression élevée et température modérée
RU2501958C2 (ru) * 2008-02-25 2013-12-20 Сенер Групо Де Инхенерия, С.А. Способ выработки энергии посредством осуществления термодинамических циклов с водяным паром высокого давления и умеренной температуры
US8904789B2 (en) 2008-02-25 2014-12-09 Sener Grupo De Ingenieria, S.A. Method for generating energy by means of thermal cycles with high pressure and moderate temperature steam
AU2009218365B2 (en) * 2008-02-25 2015-01-29 Sener Ingenieria Y Sistemas, S.A. Energy generating method using thermal cycles with high-pressure and moderate-temperature steam
RU2499147C2 (ru) * 2012-01-18 2013-11-20 Рашид Зарифович Аминов Парогазовая установка на базе влажно-паровой аэс

Also Published As

Publication number Publication date
NL1014910C2 (nl) 2001-10-12
EP1272739A1 (fr) 2003-01-08
AU5065601A (en) 2001-10-23

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