EP0939288A1 - Système de condensation - Google Patents

Système de condensation Download PDF

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Publication number
EP0939288A1
EP0939288A1 EP98810150A EP98810150A EP0939288A1 EP 0939288 A1 EP0939288 A1 EP 0939288A1 EP 98810150 A EP98810150 A EP 98810150A EP 98810150 A EP98810150 A EP 98810150A EP 0939288 A1 EP0939288 A1 EP 0939288A1
Authority
EP
European Patent Office
Prior art keywords
condenser
mixing
water
steam
condensate
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Withdrawn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
EP98810150A
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German (de)
English (en)
Inventor
Mustafa Dr. Youssef
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.)
General Electric Switzerland GmbH
Original Assignee
ABB Asea Brown Boveri Ltd
Asea Brown Boveri AB
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 ABB Asea Brown Boveri Ltd, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to EP98810150A priority Critical patent/EP0939288A1/fr
Priority to US09/255,711 priority patent/US6233941B1/en
Priority to HU9900470A priority patent/HU222391B1/hu
Publication of EP0939288A1 publication Critical patent/EP0939288A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B5/00—Condensers employing a combination of the methods covered by main groups F28B1/00 and F28B3/00; Other condensers

Definitions

  • the invention relates to a system for the condensation of turbine exhaust gas with a Condenser system and a cooling system, two in the condenser system different condensation principles are combined and two in the cooling system Cooling types, a circulation cooling or a circulation / continuous cooling, with the Capacitor system are connected.
  • Water-cooled surface condensers are characterized by a large number of cooling pipes through which cooling water flows, into which the water is directed through large water chambers and on which the steam that flows from a turbine is deposited.
  • This type of condenser however, the production of the cooling pipes and water chambers is complex.
  • Surface condensers are now realized with continuous cooling or with circulation cooling, for example with a wet or dry cooling tower. In continuous cooling, the water of a natural body of water is used as a coolant for condensers in an open circuit. This type of cooling is used in locations where such fresh water is available in sufficient quantities at a reasonable cost.
  • cooling towers and wet cooling towers, the coolant being cooled in the first in an open and air-accessible system and in the latter in a closed, air-inaccessible system.
  • Wet cooling towers are efficient due to the favorable heat transfer between water and air, the heat transferred leads to evaporation of approx. 1 to 2% of the water flow.
  • they have the well-known disadvantage that evaporation creates fog, freezing rain and shadows, which are becoming less and less accepted in residential and agricultural regions.
  • the evaporated water must be replaced by fresh water.
  • Dry cooling towers have the advantage of not causing such fog, but they are less powerful than wet cooling towers and require additional and complex cooling surfaces in the cooling tower.
  • cooling towers realized today are the wet-dry cooling towers, also known as hybrid cooling towers, as are described, for example, in DE 24 52 123 and in "Cutting the fog", The Chemical Engineer, October 29, 1992. These meet in particular the requirements of environmental protection and the reduction of water loss, avoiding fog, freezing rain and shadows caused by the fog.
  • the cooling water of a surface condenser is cooled in two cycles, with a dry cooling tower part and with a wet cooling tower part.
  • dry cooling the cooling water is led through finned heat exchange tubes, whereby the air in the dry part of the cooling tower is heated by convective heat transfer. With wet cooling, the air heats up in direct contact between air and water.
  • Evaporation of the water increases the humidity and creates air saturated with water. This saturated air mixes with the warm, dry air of the dry part of the cooling tower, resulting in a humid air flow and no more fog. In order to reduce the humidity of the wet air to a practical value, approximately 20% of the heat has to be given off in dry cooling.
  • the advantages of both cooling processes can be combined in the hybrid cooling towers, namely the high cooling capacity of the wet process and the absence of steam due to the dry process.
  • the degree of hybridization can be varied depending on the weather by bypassing the cooling water between the dry and wet part to optimize the final humidity of the air mixture.
  • a condensation system also called a Heller system, is, for example, in L. Heller and L.
  • the system has the disadvantage that a complex heating surface is required in the dry cooling tower.
  • this area is larger compared to a system with the same output with surface condenser and wet cooling tower, since the heat transfer to the air is poorer.
  • a condensation system which is inexpensive to manufacture while maintaining the advantages of the systems mentioned and at the same time achieves a performance gain for the turbine by reducing the condenser pressure.
  • This object is achieved by a condensation system according to the preamble of claim 1, which has a surface condenser and a mixed condenser in its condenser system, the two condensers working in combination and the condenser coolants passing through separate cooling circuits in the cooling system.
  • the two condensers of the system are housed in a single, common housing in which both types of condensation take place, those on the surface of cooling pipes and those on their own sprayed condensate.
  • the two capacitors are each arranged in a separate, separate housing.
  • the steam is fed to the housings of the surface condenser and the mixing condenser via a common turbine exhaust connection.
  • the condenser system is connected in two separate circulation circuits via circulation lines to a wet-dry or hybrid cooling tower, with the cooling water of the surface condenser in the wet part being evaporatively cooled by evaporation and the condensate of the mixing condenser in the dry part of the hybrid cooling tower.
  • the main advantage of this condensation system is the use of a mixed condenser as part of the condenser system together with a surface condenser instead of a single surface condenser.
  • This system uses the opportunity to build a mixing condenser for the dry part of a hybrid cooling tower, where the coolant is inaccessible to the air. This results in savings in material and manufacturing costs.
  • the total cost of a surface condenser is largely determined by the cost of tubing, support plates for the pipes and water chambers.
  • the tubular heating surface, support plates and water chambers can be reduced, for example, by up to 50%, whereby an estimated 35% of the total costs of the condenser system can be saved.
  • the overall cost of the system can be further reduced by reducing the volume of the mixing condenser with the same output.
  • the condensate is not sprayed as drops in the mixing condenser but is distributed as a very thin and turbulent water film.
  • the heat transfer on a film of this type achieves a multiple of the heat transfer on drops, so that the same performance can be achieved in a smaller volume.
  • the use of a mixed capacitor has the advantage that the degree of roughness of the mixed capacitor part reaches zero.
  • the reduction in the degree of roughness also causes a reduction in the condenser pressure, as a result of which the turbine gains power.
  • FIG 1 is a system for condensing the exhaust steam of a low pressure turbine 20 shown.
  • This has a capacitor system 25 in which two capacitors, a surface capacitor 30 combined with a mixed capacitor 35 in one common housing with a common condensate collector (Hotwell) 31 are arranged.
  • the steam from the low pressure turbine 20 flows over one Evaporating nozzle 21 in the housing of the condenser system 25.
  • There it condenses in the surface condenser 30 on cooling tubes which are in tube bundle 1 are summarized, and in the mixing condenser 35 on sprayed condensate.
  • the mixed condenser part of the combined condenser system according to the invention is connected to a dry cooling tower and the surface condenser part is connected to continuous cooling with cooling water from a natural body of water.
  • the surface condenser part is connected to a separate wet cooling tower and the mixed condenser part is connected to a separate dry cooling tower.
  • the exhaust air from the two cooling towers is brought together and mixed via pipes, which reduces the moisture and avoids fog.
  • the condensate is freed of non-condensable gases (air) as far as possible. In surface condensers, this is achieved, for example, as shown in FIG.
  • the mixing condenser 35 is equipped with an internal degasser 23. This is arranged in the mixing condenser 35 in a kind of cabin, which is formed by flat partition walls 24 and the housing wall of the mixing condenser 35, the rear partition wall being indicated by a dashed line.
  • the degasser 23 has spray nozzles 26 from which a partial flow of the cooling condensate is sprayed via a packing or internals 34.
  • the steam flows through an opening in the upper region of the partition walls 24 from below and upwards in the same counter-current to the condensate flow.
  • the vent is arranged between the two cocurrent and countercurrent columns, as is known from EP 0 461 515.
  • the make-up water can also be introduced into the degasser 23, so that only one degasser is built in the mixing condenser space.
  • the mixed condenser 35 likewise has an internal degasser 23.
  • the degasser 23 and the packing 34 arranged therein are preferably cylindrical.
  • the degassing takes place in a manner similar to that in FIG. 3.
  • a steam line leads from the surface condenser 30 to the degasser 23, whereby the steam flows in countercurrent to the condensate flow.
  • the condensate is conducted via a connecting line 46 from the degasser 23 to the hotwell 31 of the surface condenser 30.
  • An additional water degasser can, for example, be integrated in the second mixing condenser room.
  • the vapor-air mixture of the mixing condenser and its internal degasser is supplied to the venting condenser 15. This is attached to the mixing capacitor 35, but can also be integrated within the housing.
  • the steam-air mixture flows via several different lines into the venting condenser 15, via line 17 from the additional water degasser 28, via line 36 of the mixing condenser and via line 37 from the degasser 23 of the mixing condenser.
  • the majority of the steam is deposited there on condensate, which is sprayed by spray nozzles 18.
  • the spray nozzles 18 are fed via a line 9 with bypass condensate from the circulation line of the dry cooling 33.
  • the non-condensable gases are sucked away by a steam / gas mixture from the venting condenser 15 via a suction pipe 8.
  • the level of the condensate level in the vent condenser is held by a siphon that leads from the vent condenser into the mixing condenser.
  • the resulting condensate from both condensers runs down into a condensate collecting vessel 31, of which it is supplied partly to the cooling circuit via the circulation pump 6 and partly to the water-steam circuit (not shown) via the feed water pump 10.
  • the Hotwell 31 has a weir 39 for the purpose of separating the high-quality condensate from the surface condenser 30 and the degasser 23 for the water-steam circuit and the condensate of inferior quality from the mixing condenser and additional water degasser.
  • the level of the condensate for the water-steam circuit is regulated by a conventional control valve (not shown) after the pump 10 and by an overflow option into or out of the condensate of the mixing condenser and additional water degasser.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
EP98810150A 1998-02-25 1998-02-25 Système de condensation Withdrawn EP0939288A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98810150A EP0939288A1 (fr) 1998-02-25 1998-02-25 Système de condensation
US09/255,711 US6233941B1 (en) 1998-02-25 1999-02-23 Condensation system
HU9900470A HU222391B1 (hu) 1998-02-25 1999-02-24 Kondenzációs rendszer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810150A EP0939288A1 (fr) 1998-02-25 1998-02-25 Système de condensation

Publications (1)

Publication Number Publication Date
EP0939288A1 true EP0939288A1 (fr) 1999-09-01

Family

ID=8235962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810150A Withdrawn EP0939288A1 (fr) 1998-02-25 1998-02-25 Système de condensation

Country Status (3)

Country Link
US (1) US6233941B1 (fr)
EP (1) EP0939288A1 (fr)
HU (1) HU222391B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115218267A (zh) * 2022-06-07 2022-10-21 北京京能科技有限公司 一种冷却水塔参与调节的高背压供热方法

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6490863B1 (en) * 2001-06-11 2002-12-10 Thermal Dynamics, Inc. Compressor cycle apparatus
US6663370B1 (en) 2001-06-11 2003-12-16 Thermal Dynamics, Inc. Condenser motor
US6619042B2 (en) * 2001-10-01 2003-09-16 Holtec International, Inc. Deaeration of makeup water in a steam surface condenser
CN101573582A (zh) * 2006-03-08 2009-11-04 澳大利亚水空调专营有限公司 热交换装置及其方法
WO2007139558A1 (fr) * 2006-06-01 2007-12-06 Exaflop Llc Refroidissement d'air chaud pour matériel électronique
WO2008002635A2 (fr) * 2006-06-27 2008-01-03 Gea Power Cooling Systems, Llc Système de condensation en série et en parallèle
JP5184211B2 (ja) * 2008-05-23 2013-04-17 株式会社日立製作所 復水器及び発電設備
FR2935737B1 (fr) * 2008-09-10 2013-02-15 Suez Environnement Dispositif de cogeneration amelioree
US8235365B2 (en) * 2009-05-15 2012-08-07 Spx Cooling Technologies, Inc. Natural draft air cooled steam condenser and method
HU228665B1 (en) * 2009-12-03 2013-05-28 Gea Egi Energiagazdalkodasi Zrt Hybrid cooling system
NZ596481A (en) * 2011-11-16 2014-10-31 Jason Lew Method and apparatus for utilising air thermal energy to output work, refrigeration and water
HUP1200544A2 (en) 2012-09-20 2014-03-28 Gea Egi Energiagazdalkodasi Zrt Hybrid condenser
CN103292611B (zh) * 2013-05-17 2014-10-29 东南大学 一种用于空冷电厂湿式空冷器的节水装置
BR102014023072B1 (pt) * 2014-09-13 2020-12-01 Citrotec Indústria E Comércio Ltda sistema de condensação à vácuo utilizando condensador evaporativo e sistema de remoção de ar acoplado as turbinas de condensação em termoelétricas
CN111120021B (zh) * 2019-12-20 2022-06-24 东方电气集团东方汽轮机有限公司 供热机组凝汽器补水系统
CN112631343B (zh) * 2020-12-23 2022-11-29 浙江浙能绍兴滨海热电有限责任公司 一种母管制多除氧器并列运行控制水位的方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543372C (de) * 1928-01-04 1932-02-05 Gustav Tretrop Rueckkuehlrieselturm fuer Dampfturbinen mit eingebauten Kondensationsmittelkuehlern und Ventilatoren
CH402909A (de) * 1960-07-15 1965-11-30 Licentia Gmbh Kondensationseinrichtung für Dampfkraftanlagen
DE2204723A1 (de) * 1971-02-04 1972-08-10 Westinghouse Electric Corp Anordnung von Kühleinrichtungen
US3820334A (en) * 1972-07-28 1974-06-28 Transelektro Magyar Villamossa Heating power plants
US3834133A (en) * 1972-12-22 1974-09-10 Foster Wheeler Corp Direct contact condenser having an air removal system
DE2452123A1 (de) 1974-11-02 1976-05-13 Balcke Duerr Ag Kombinierter nass-/trockenkuehlturm

Family Cites Families (4)

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US4788824A (en) * 1986-09-02 1988-12-06 Spurr Charles A Electrical power plant and method of producing electricity
CH682982A5 (de) 1990-06-11 1993-12-31 Asea Brown Boveri Apparat zur Aufwärmung und Entgasung von Wasser.
US5133190A (en) * 1991-01-25 1992-07-28 Abdelmalek Fawzy T Method and apparatus for flue gas cleaning by separation and liquefaction of sulfur dioxide and carbon dioxide
US5551238A (en) * 1995-08-23 1996-09-03 Prueitt; Melvin L. Hydro-air renewable power system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE543372C (de) * 1928-01-04 1932-02-05 Gustav Tretrop Rueckkuehlrieselturm fuer Dampfturbinen mit eingebauten Kondensationsmittelkuehlern und Ventilatoren
CH402909A (de) * 1960-07-15 1965-11-30 Licentia Gmbh Kondensationseinrichtung für Dampfkraftanlagen
DE2204723A1 (de) * 1971-02-04 1972-08-10 Westinghouse Electric Corp Anordnung von Kühleinrichtungen
US3820334A (en) * 1972-07-28 1974-06-28 Transelektro Magyar Villamossa Heating power plants
US3834133A (en) * 1972-12-22 1974-09-10 Foster Wheeler Corp Direct contact condenser having an air removal system
DE2452123A1 (de) 1974-11-02 1976-05-13 Balcke Duerr Ag Kombinierter nass-/trockenkuehlturm

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"Cutting the Fog", THE CHEMICAL ENGINEER, 29 October 1992 (1992-10-29)
"GROSSE KRAFTWERKE, DRITTER BAND", vol. 3, 1968, SPRINGER VERLAG 1968
L. HELLER UND L. FORGON: "Betriebserfahrungen und weiter Entwicklungsergebnisse mit dem Heller-System bei Luftkondensation fuer Kraftwerke", ENERGIETECHNIK, vol. 13, December 1963 (1963-12-01)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115218267A (zh) * 2022-06-07 2022-10-21 北京京能科技有限公司 一种冷却水塔参与调节的高背压供热方法
CN115218267B (zh) * 2022-06-07 2024-04-05 北京京能科技有限公司 一种冷却水塔参与调节的高背压供热方法

Also Published As

Publication number Publication date
HU222391B1 (hu) 2003-06-28
US6233941B1 (en) 2001-05-22
HU9900470D0 (en) 1999-04-28
HUP9900470A3 (en) 2000-12-28
HUP9900470A2 (hu) 1999-11-29

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