EP0821136A1 - Système de production d'énergie - Google Patents

Système de production d'énergie Download PDF

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Publication number
EP0821136A1
EP0821136A1 EP97200464A EP97200464A EP0821136A1 EP 0821136 A1 EP0821136 A1 EP 0821136A1 EP 97200464 A EP97200464 A EP 97200464A EP 97200464 A EP97200464 A EP 97200464A EP 0821136 A1 EP0821136 A1 EP 0821136A1
Authority
EP
European Patent Office
Prior art keywords
gas
outlet
oxygen
turbine
containing gas
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Withdrawn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
EP97200464A
Other languages
German (de)
English (en)
Inventor
Maarten Johannes Van Der Burgt
Jacobus Van Liere
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.)
Kema NV
Original Assignee
Kema NV
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
Priority claimed from EP96202076A external-priority patent/EP0821135A1/fr
Application filed by Kema NV filed Critical Kema NV
Priority to EP97200464A priority Critical patent/EP0821136A1/fr
Priority to EP97202269A priority patent/EP0821137A1/fr
Publication of EP0821136A1 publication Critical patent/EP0821136A1/fr
Withdrawn legal-status Critical Current

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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
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/04—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas
    • F01K21/047—Steam engine plants not otherwise provided for using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas having at least one combustion gas turbine

Definitions

  • the present invention relates to a system for power generation from non-gaseous fuels.
  • Such systems generally comprise a turbine system, comprising both gas turbines and steam turbines, and a power generating system.
  • the efficiency of the best known systems for power generation from non-gaseous fuels is about 40 -45 %.
  • the invention therefore provides a system for power generation from non-gaseous fuels comprising a turbine system and a power generating system connected to said turbine system, wherein the said turbine system comprises:
  • the fluid is supplied directly to the oxygen-containing gas in and/or after the compressor means and the cooling is essentially obtained by evaporation of the fluid.
  • the exhaust gas from the gas turbine means is expanded to a sub-atmospheric pressure of 0.2 - 0.8 bara.
  • the exhaust gases leaving the gas turbine means are cooled and water is condensed out.
  • At least part of the exhaust gas from said gas turbine means is recycled to the inlet of the oxygen-containing gas of said compressor means.
  • At least part of the exhaust gas from the gas turbine means is used to supply heat for drying of the fuel in a drier.
  • an organic fuel is used in said power generating system.
  • the flue gas outlet of the combustion means passes through a gas cleaning means.
  • the flue gas is cleaned in the combustion means.
  • Fig. 1-4 flow sheets of power stations according to the present invention.
  • Fig. 1 shows a power station 1 according to the present invention.
  • This power station 1 comprises a compressor unit 2 for quasi-isothermal compression.
  • the compressor unit 2 comprises an oxygen-containing gas inlet 3 and a compressed outlet for oxygen-containing gas 4.
  • the compressor unit 2 is further provided with means 5 for direct water cooling of oxygen-containing gas in the compressor unit.
  • the means 5 comprise a water inlet 6 and waterpipes 7. Furthermore, it is possible to supply water into the compressed oxygen-containing gas outlet 4.
  • the compressor unit 2 is mounted on a shaft 8 to which is connected a turbine 9 and a generator 10.
  • the compressed oxygen-containing gas outlet 4 is connected to a combustion means 11 to which is also added fuel via a fuel inlet 12 via a fuel pressurizing device 13.
  • This fuel is non-gaseous and therefore may consist of particulate fuel, liquid fuel and/or mixtures thereof.
  • the flue gas outlet 14 of the combustion unit 11 is provided with a flue gas cleaning unit 15. Subsequently the flue gas is expanded in the turbine 9 and the exhaust gas leaves the turbine 9 via the turbine exhaust gas outlet 16. This outlet 16 passes through a recuperator 17 for heat exchange with compressed oxygen-containing gas that passes through the recuperator 17 via the compressed oxygen-containing gas outlet 4 of the compressor means 2. Finally the cooled exhaust gas is routed to a stack via duct 18.
  • a by-pass line 19 may be arranged over the combustion and/or cleaning unit providing an opportunity to control the combustion and/or the turbine temperature.
  • Fig. 2 shows a power station 20 of which unit operations and processes similar to those of the power station 1 of Fig. 1 are referred to by using the same reference numbers.
  • the compressor means 2 comprises two consecutive compressors 21 and 22 for compressing oxygen-containing gas to respectively 0,8 bara and 8 bara. After each oxygen-containing compression stage water is directly injected for cooling and to that end the direct water cooling means 5 comprise water inlets 23 and 24.
  • the fuel supplied via the fuel inlet 12 consists of coal which is combusted at a low pressure of 8 bara and slash is removed from the combustion means 11 via the slash outlet 25.
  • the combustion means may consist of a fluidized bed. Cooled flue gas is routed via duct 18 to a stack 32. The efficiency of the power station 20 is about 48.0%.
  • the shaft 8 and the generator 10 are omitted for reasons of clarity.
  • Fig. 3 shows a power station 26 having a lay-out similar to the power station 20 of Fig. 2. Same or equivalent operation units and processes as for the power station 20 are referred to by the same reference numbers in Fig. 2.
  • the power station 26 is provided with a subatmospheric expansion turbine means 27 expanding exhaust gas to a subatmospheric pressure of about 0.5 bara.
  • This flue gas passes through the recuperator 17 and subsequently through a condensor unit 28.
  • heat and condensate are removed in a cooler 29 and a condensor 30 respectively.
  • the cooler 29 may be substituted for another condensor such that two types of condensate may be obtained of which the condensate originating from the condensor 30 is the most pure.
  • the dry cool exhaust gas is compressed in a compressor 31 to atmospheric pressure and subsequently released into the atmosphere via the stack 32.
  • the power station efficiency is about 50%.
  • Fig. 4 shows a power station 33 for firing wet biomass.
  • the lay-out of this power station 33 is similar to the power station 20 of Fig. 2 and similar or equivalent unit operations and processes are referred to by the same reference numbers.
  • biomass supplied via the biomass inlet 12 is first dried in a biomass dryer 34 using the low temperature heat (about 140°C) of the exhaust gas leaving the recuperator 16 via the outlet 35.
  • the dry and heated (110°C) biomass is fed via a pressurizing device 13 to the combustion unit 11. Any combustion ash is removed from the flue gas cleaning unit 15 via the outlet 36.
  • the power station efficiency is dependent on the operation parameters about 50 to 54%.

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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)
EP97200464A 1996-07-22 1997-02-17 Système de production d'énergie Withdrawn EP0821136A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP97200464A EP0821136A1 (fr) 1996-07-22 1997-02-17 Système de production d'énergie
EP97202269A EP0821137A1 (fr) 1996-07-22 1997-07-22 Système de production d'énergie

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP96202076 1996-07-22
EP96202076A EP0821135A1 (fr) 1996-07-22 1996-07-22 Production d'énergie au moyen d'un cycle combiné à gaz et au charbon
EP97200464A EP0821136A1 (fr) 1996-07-22 1997-02-17 Système de production d'énergie

Publications (1)

Publication Number Publication Date
EP0821136A1 true EP0821136A1 (fr) 1998-01-28

Family

ID=26143025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200464A Withdrawn EP0821136A1 (fr) 1996-07-22 1997-02-17 Système de production d'énergie

Country Status (1)

Country Link
EP (1) EP0821136A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959235A2 (fr) 1998-05-20 1999-11-24 Hitachi, Ltd. Centrale à turbine de gaz

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1056722A (en) * 1964-01-15 1967-01-25 Arthur Morton Squires Improvements in or relating to power-generating steam cycle
GB1284335A (en) * 1970-04-15 1972-08-09 Rolls Royce Improvements in or relating to gas turbine engines
US4893469A (en) * 1988-01-07 1990-01-16 Yasui Yamashita Steam and combustion gas engine
EP0361065A1 (fr) * 1988-09-28 1990-04-04 Westinghouse Electric Corporation Méthode pour la génération de puissance utilisant un combustible solide pour une turbine à gaz
EP0384336A1 (fr) * 1989-02-22 1990-08-29 Mario Gaia Procédé et dispositif pour convertir une énergie themique en énergie mécanique
EP0444913A1 (fr) * 1990-02-27 1991-09-04 Turbine Developments Aktiengesellschaft Turbine à gaz
US5067317A (en) * 1990-02-26 1991-11-26 The United States Of America As Represented By The United State Department Of Energy Process for generating electricity in a pressurized fluidized-bed combustor system
DE4335136A1 (de) * 1992-10-22 1994-04-28 Evt Energie & Verfahrenstech Verfahren und Vorrichtung zur Durchführung des Verfahrens zur Erzeugung von Gasen zum Betreiben einer Gasturbine in einem kombinierten Gas- und Dampfkraftwerk
EP0602795A2 (fr) * 1992-11-13 1994-06-22 Foster Wheeler Energy Corporation Centrale combinée avec un réacteur à lit fluidisé circulant

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1056722A (en) * 1964-01-15 1967-01-25 Arthur Morton Squires Improvements in or relating to power-generating steam cycle
GB1284335A (en) * 1970-04-15 1972-08-09 Rolls Royce Improvements in or relating to gas turbine engines
US4893469A (en) * 1988-01-07 1990-01-16 Yasui Yamashita Steam and combustion gas engine
EP0361065A1 (fr) * 1988-09-28 1990-04-04 Westinghouse Electric Corporation Méthode pour la génération de puissance utilisant un combustible solide pour une turbine à gaz
EP0384336A1 (fr) * 1989-02-22 1990-08-29 Mario Gaia Procédé et dispositif pour convertir une énergie themique en énergie mécanique
US5067317A (en) * 1990-02-26 1991-11-26 The United States Of America As Represented By The United State Department Of Energy Process for generating electricity in a pressurized fluidized-bed combustor system
EP0444913A1 (fr) * 1990-02-27 1991-09-04 Turbine Developments Aktiengesellschaft Turbine à gaz
DE4335136A1 (de) * 1992-10-22 1994-04-28 Evt Energie & Verfahrenstech Verfahren und Vorrichtung zur Durchführung des Verfahrens zur Erzeugung von Gasen zum Betreiben einer Gasturbine in einem kombinierten Gas- und Dampfkraftwerk
EP0602795A2 (fr) * 1992-11-13 1994-06-22 Foster Wheeler Energy Corporation Centrale combinée avec un réacteur à lit fluidisé circulant

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0959235A2 (fr) 1998-05-20 1999-11-24 Hitachi, Ltd. Centrale à turbine de gaz
US6247302B1 (en) 1998-05-20 2001-06-19 Hitachi, Ltd. Gas turbine power plant
US6397578B2 (en) 1998-05-20 2002-06-04 Hitachi, Ltd. Gas turbine power plant

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