EP1217174A1 - Centrale à turbines et procédé pour faire fontionner une telle centrale - Google Patents

Centrale à turbines et procédé pour faire fontionner une telle centrale Download PDF

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Publication number
EP1217174A1
EP1217174A1 EP00128459A EP00128459A EP1217174A1 EP 1217174 A1 EP1217174 A1 EP 1217174A1 EP 00128459 A EP00128459 A EP 00128459A EP 00128459 A EP00128459 A EP 00128459A EP 1217174 A1 EP1217174 A1 EP 1217174A1
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EP
European Patent Office
Prior art keywords
turbine
working medium
steam
unit
heat exchanger
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.)
Withdrawn
Application number
EP00128459A
Other languages
German (de)
English (en)
Inventor
Paul Dr. Girbig
Nicolas Dr. Vortmeyer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to EP00128459A priority Critical patent/EP1217174A1/fr
Publication of EP1217174A1 publication Critical patent/EP1217174A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle

Definitions

  • the invention relates to a turbine system with a Compressor unit, the discharge side via an overflow line a turbine unit is connected downstream. It affects further a method for operating such a turbine system.
  • a such a turbine system usually comprises a compressor unit, through which a working medium, for example ambient air, sucked in and to a comparatively high Pressure is compressed. That condensed in such a way, by the Working medium flowing out of the compressor unit is over an overflow line fed to a turbine unit. at a gas turbine system is in the overflow line Combustion chamber switched. One takes place in the combustion chamber Mixing the compressed working medium with one usually fossil fuel.
  • a working medium for example ambient air
  • the resulting mixture is burned in the combustion chamber and brought to a high working temperature. So that under high pressure and at a high temperature level working medium is then over the Overflow line of the compressor unit on the downstream side downstream turbine unit supplied. Relaxed there the working medium performing work, being the turbine unit drives. This in turn drives over a common one Shaft on the one hand the compressor unit and on the other hand an associated generator, the generation of electrical Energy takes place. If necessary, between the turbine unit and the compressor unit or between the turbine unit and the generator can be connected to a transmission.
  • Such turbine systems designed as a gas turbine are usually for a particularly economical mode of operation designed and can have an efficiency of up to, for example Reach 39%.
  • this sets the Compliance with particularly narrow requirements with regard to design parameters such as working pressure and working temperature of the working medium as well as the type and quality of the usable fuels ahead. They are also particularly high Efficiencies for such gas turbines in particular due to a comparatively large dimensioning reachable on the design performance.
  • the invention is therefore based on the object of a turbine system of the type mentioned above, with high reliability and with high efficiency in terms of fuel to be used is particularly flexible. In addition, should a particularly suitable for operating the turbine system Procedure can be specified.
  • this object is achieved according to the invention solved with one for heating the from the compressor unit flowing working medium switched into the overflow line first heat exchanger.
  • the invention is based on the consideration that the turbine system for a high degree of flexibility with regard to the fuel to be used with consistently high efficiency especially for the problem-free use of comparatively inferior Suitable fuels such as biomass should be.
  • a comparatively Inferior fuel can, however, be compared large number of waste or suspended matter, such as Soot particles that arise in the escaping from the burning location Flue gas flow to be carried.
  • Such components can be particularly sophisticated polluting particles, however, in an undesirable manner, to encrust or damage components lead in the turbine unit. Therefore, that of the turbine unit fed, under high pressure and on working medium brought consistently to a high temperature level kept free from such disruptive dirt components become.
  • the first heat exchanger is expediently switched off the flue gas produced by burning a fossil fuel heated.
  • the first heat exchanger advantageously in the flue gas duct Combustion chamber, which is powered by a fossil fuel, especially with an inferior fuel like for example biomass, can be loaded.
  • Such a particularly high degree of efficiency Turbine system accessible by this advantageously for the recovery of air flowing out of the turbine unit, relaxed working medium with the heat carried is.
  • this is in the overflow line a second heat exchanger connected on the secondary side, the primary side by flowing out of the turbine unit relaxed working medium is heated.
  • the second heat exchanger is a heat transfer from the Turbine unit flowing out relaxed working medium that still to be heated and fed to the turbine unit enables highly compressed working medium.
  • the turbine system is advantageously supplied with electricity for a nominal power of about 1 kW to about 1 MW. So in the manner of a microturbine designed for a comparatively low nominal power Turbine system can thus in the sense of a decentralized installation to power a comparatively large power grid are used in multiple copies, each individual Turbine system a comparatively small number is assigned by consumers.
  • the turbine system also with comparative low-quality fuel is also particularly advantageous, because with such a system not only in local terms, but also with regard to the type and quality of the fuel there is a particularly high degree of flexibility. The logistic Requirements for such an electricity supply are therefore particularly low.
  • the turbine system is an economical mode of operation in a particularly advantageous embodiment in the manner of a combined gas and steam turbine system.
  • the first heat exchanger expediently for heating through a flue gas into a steam turbine Integrated steam generator.
  • the fuel is on the one hand via the first heat exchanger the provision of the to operate the turbine unit comparatively high temperature levels for that of the turbine unit ensured working medium to be supplied, on the other hand by also arranged in the steam generator, in switched the water-steam cycle of a steam turbine Heating surfaces the production of process steam for the steam turbine is guaranteed.
  • This is a particularly extensive one and full utilization of the heat content in the combustion the flue gas produced by the fuel.
  • This combination of the turbine system with a steam turbine otherwise points to a combination Gas and steam turbine plant a particularly simple overall process on, in particular because of the only, both for heating the working medium as well as for the Production of operating steam provided, with a view to Gas turbine outsourced combustion chamber with a particularly small Number of process parameters.
  • the combined turbine system also for a particularly wide range of applications suitable.
  • the stated object is achieved by flowing out of the compressor unit for supply in the working medium provided for the turbine unit only is heated by indirect heat exchange.
  • the heating of the working medium is advantageous by generated from the combustion of a fossil fuel Made of flue gas.
  • the turbine plant is in the manner of a combination of one Gas turbines operated with a steam turbine process, wherein the working medium in a steam turbine associated Steam generator is heated.
  • This will be more advantageous in another Design that flowing out of the turbine unit relaxed working medium for further heat recovery Heating, advantageously for preheating, one in the water-steam cycle the steam turbine guided flow medium used.
  • the advantages achieved with the invention are in particular in that through the exclusively indirect heat exchange when heating the in the overflow line, the Turbine unit to be supplied working medium at his Do not heat up with annoying dirt or soot particles is loaded.
  • the working medium supplied to the turbine unit can therefore also meet the required boundary conditions such as pressure range and temperature level irrespective of the fuel used, free from disruptive Particles are kept. So the turbine system is too when using comparatively low-quality fuel Particularly reliable with a high proportion of soot or dirt particles can also be operated for a long period of operation.
  • Such a combined turbine system is suitable for those with correspondingly small dimensions Turbine unit with a nominal output of approximately 1 kW to 1 MW for use in a decentralized supply network, in which also comparatively due to the usability low-quality fuels a particularly high Flexibility in the feeding of consumers guaranteed is.
  • An embodiment of the invention is based on a Drawing explained in more detail.
  • the figure shows a turbine system.
  • the turbine system 1 is in the form of a microturbine designed for a nominal output of less than 1 MW and comprises a compressor unit 2 and one of these on the downstream side via an overflow line 4 downstream turbine unit 6.
  • the turbine unit 6 is with the compressor unit 2 arranged on a common shaft 8, so that the turbine unit 6 drives the compressor unit 2. Furthermore, the turbine unit 6 drives a via the shaft 8 arranged on this, not shown generator to generate electricity.
  • the generator can be driven directly by the shaft 8 or with this can be connected via a gearbox.
  • the compressor unit 2 is suitably filtered ambient air can be supplied as working medium A.
  • working medium A When passing through the compressor 2, working medium A is set to one for operation the turbine unit 6 compresses suitable working pressure. The working medium A compressed in such a way is then by Heating to a suitable one for the operation of the turbine unit 6 Brought temperature level and then the turbine unit 6 fed where it relaxes work-performing.
  • the turbine system 1 is for operation of the turbine unit 6 with high reliability even when used a comparatively low-quality fuel.
  • the working medium A is heated before it Entry into the turbine unit 6 exclusively through indirect Heat exchange.
  • indirect heat exchange is a first in the overflow line 4 on the secondary side Heat exchanger 10 switched.
  • the first heat exchanger 10 is in one of a steam turbine, not shown associated steam generator 12 integrated.
  • a combustion chamber 14 is assigned to the steam generator 12 a fossil fuel B can be supplied.
  • a fossil fuel B can be a comparatively high-quality fuel such as coal or oil or a comparatively inferior fuel such as Biomass can be provided. That with the combustion of the fuel B flue gas R arising in the combustion chamber 14 is present passed through the steam generator 12 and thus leads under other for heating the integrated in the steam generator 12 first heat exchanger 10.
  • the turbine system 1 thus takes over the combustion chamber 14 in the manner of an outsourced one Combustion chamber heating the in the overflow line 4 guided working medium A for the turbine unit 6, without that there is a mixing of the flue gas R with the Working medium A leads.
  • through the indirect Heat exchange of the flue gas R with the working medium A a strict and consistent separation of the flue gas flow from the Working medium A adhered to, so that even with a comparatively dirty or soot-laden flue gas R in the Turbine unit 6 entering heated working medium A a has particularly high purity.
  • a second heat exchanger 20 is on the primary side from the relaxed one flowing out of the turbine unit Working medium A 'heatable.
  • the second heat exchanger 20 is in the manner of preheating also on the secondary side Overflow line 4 switched, so that in the relaxed working medium A 'carried heat at least partially on the compressed working medium flowing out of the compressor unit 2 A is transferable.
  • the turbine system 1 is designed as a combined turbine system and includes in addition to that in the manner of a gas turbine operable turbine unit 6 a not shown Steam turbine assigned to the steam generator 12 is.
  • the evaporator heating surface 30 can form an evaporator circuit with a also not shown water-steam drum connected his.
  • the evaporator heating surface 30 and the superheater heating surface 32 are as well as possibly additionally provided additional heating surfaces in a water-steam circuit 34 the steam turbine switched.
  • the water-steam circuit 34 is in the steam generator 12 by evaporation of a flow medium generated steam D can be fed to the steam turbine, where it is working relaxed.
  • the steam turbine is on the downstream side a condenser is connected downstream in the water-steam circuit 34, in which the relaxed steam D is condensed. from The condenser gets this through the condensation of the steam D water obtained via a feed water system, in particular a feed water tank can be switched as Feed water S back into the steam generator 12, so that a closed Water-steam cycle 34 is formed.

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  • 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)
EP00128459A 2000-12-22 2000-12-22 Centrale à turbines et procédé pour faire fontionner une telle centrale Withdrawn EP1217174A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP00128459A EP1217174A1 (fr) 2000-12-22 2000-12-22 Centrale à turbines et procédé pour faire fontionner une telle centrale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00128459A EP1217174A1 (fr) 2000-12-22 2000-12-22 Centrale à turbines et procédé pour faire fontionner une telle centrale

Publications (1)

Publication Number Publication Date
EP1217174A1 true EP1217174A1 (fr) 2002-06-26

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EP00128459A Withdrawn EP1217174A1 (fr) 2000-12-22 2000-12-22 Centrale à turbines et procédé pour faire fontionner une telle centrale

Country Status (1)

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EP (1) EP1217174A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009010023A2 (fr) 2007-07-18 2009-01-22 Gammel Engineering Gmbh Dispositif et procédé de production de force et de chaleur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1017180A (fr) * 1949-06-09 1952-12-03 Oerlikon Maschf Installation de turbines à vapeur et à gaz
EP0050687A1 (fr) * 1980-10-28 1982-05-05 GebràœDer Sulzer Aktiengesellschaft Centrale thermique à vapeur comprenant une turbine à air chaud

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1017180A (fr) * 1949-06-09 1952-12-03 Oerlikon Maschf Installation de turbines à vapeur et à gaz
EP0050687A1 (fr) * 1980-10-28 1982-05-05 GebràœDer Sulzer Aktiengesellschaft Centrale thermique à vapeur comprenant une turbine à air chaud

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009010023A2 (fr) 2007-07-18 2009-01-22 Gammel Engineering Gmbh Dispositif et procédé de production de force et de chaleur
WO2009010023A3 (fr) * 2007-07-18 2009-03-26 Gammel Engineering Gmbh Dispositif et procédé de production de force et de chaleur

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