FR2939877A1 - Downstream vapor condensation method for steam turbine utilized to drive e.g. air compressor, involves carrying out condensations of two vapor parts simultaneously at same pressure i.e. sub-atmospheric pressure - Google Patents
Downstream vapor condensation method for steam turbine utilized to drive e.g. air compressor, involves carrying out condensations of two vapor parts simultaneously at same pressure i.e. sub-atmospheric pressure Download PDFInfo
- Publication number
- FR2939877A1 FR2939877A1 FR0858623A FR0858623A FR2939877A1 FR 2939877 A1 FR2939877 A1 FR 2939877A1 FR 0858623 A FR0858623 A FR 0858623A FR 0858623 A FR0858623 A FR 0858623A FR 2939877 A1 FR2939877 A1 FR 2939877A1
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- FR
- France
- Prior art keywords
- fluid
- steam
- vapor
- steam turbine
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B7/00—Combinations of two or more condensers, e.g. provision of reserve condenser
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0036—Multiple-effect condensation; Fractional condensation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
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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
- F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
- F01K9/003—Plants characterised by condensers arranged or modified to co-operate with the engines condenser cooling circuits
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Description
PROCEDE ET APPAREIL DE CONDENSATION DE VAPEUR PROVENANT D'UNE TURBINE A VAPEUR METHOD AND APPARATUS FOR CONDENSING STEAM FROM STEAM TURBINE
La présente invention est relative à un procédé et appareil de condensation de vapeur provenant d'une turbine à vapeur. The present invention relates to a method and apparatus for condensing steam from a steam turbine.
Une turbine à vapeur est avantageusement utilisée pour entraîner au moins un compresseur d'air ou d'un produit pour un appareil de séparation d'air lorsqu'un des produits de l'appareil de séparation d'air, généralement l'oxygène, est envoyé à un procédé exothermique et dont la récupération de l'énergie se fait sous forme de génération de vapeur à haute pression. La vapeur provenant de la turbine est alors détendue à une pression sub-atmosphérique et condensée contre un fluide de refroidissement, généralement de l'eau (éventuellement de 15 mer) ou de l'air. A steam turbine is advantageously used to drive at least one air compressor or product for an air separation apparatus when one of the products of the air separation apparatus, generally oxygen, is sent to an exothermic process and the recovery of energy is in the form of high pressure steam generation. The steam from the turbine is then expanded to a sub-atmospheric pressure and condensed against a coolant, usually water (possibly sea) or air.
Le système de condensation à eau est généralement privilégié car plus économique. The water condensation system is generally preferred because it is more economical.
Cependant, lorsque la disponibilité d'eau de refroidissement est nulle ou, si les quantités 20 d'eau disponibles sont insuffisantes, ou si le coût de l'eau de refroidissement est très élevé, le système de condensation à air est adopté. C'est généralement le cas dans des zones moyen orientales. However, when the availability of cooling water is zero or, if the available water quantities are insufficient, or if the cost of the cooling water is very high, the air condensation system is adopted. This is generally the case in Middle Eastern areas.
Le système proposé permet d'utiliser économiquement l'eau de refroidissement disponible, 25 et de compléter le besoin en réfrigération par un système à air. On dispose ainsi d'un système plus économique que le refroidissement tout à l'air, et permet, dans des marches réduites de la turbine à vapeur, d'économiser la consommation d'eau de refroidissement. The proposed system makes it possible to economically use the available cooling water and to supplement the need for refrigeration by an air system. This provides a more economical system than cooling all in the air, and allows, in reduced steps of the steam turbine, to save the consumption of cooling water.
Selon un objet de l'invention, il est prévu un procédé de condensation de vapeur en aval 30 d'une turbine à vapeur dans lequel la vapeur provenant de la turbine à vapeur est divisée en deux parties, une première partie de la vapeur se condense par échange de chaleur avec un premier fluide pour produire un premier condensat et une deuxième partie de la vapeur se condense par échange de chaleur avec un deuxième fluide pour produire un deuxième condensat, le premier fluide ayant une composition différente de celle du deuxième fluide 35 et les condensations des deux parties s'effectuant en même temps. According to one object of the invention, there is provided a steam condensation process downstream of a steam turbine in which steam from the steam turbine is divided into two parts, a first part of the steam condenses by heat exchange with a first fluid to produce a first condensate and a second portion of the vapor condenses by heat exchange with a second fluid to produce a second condensate, the first fluid having a composition different from that of the second fluid and the condensations of the two parts taking place at the same time.
Optionnellement : - la première partie de la vapeur et la deuxième partie se condensent à substantiellement la même pression, - la pression de condensation est sub-atmosphérique, - le premier fluide est de l'eau, éventuellement de l'eau de mer, - le deuxième fluide est de l'air, - le deuxième fluide est en écoulement forcé, - le débit de la première partie de vapeur est variable en fonction du débit disponible du premier fluide, - le premier et le deuxième condensat sont mélangés, Selon un autre aspect de l'invention, il est prévu un appareil de condensation de vapeur en aval d'une turbine à vapeur comprenant un premier échangeur, un deuxième échangeur, des conduites pour envoyer une première partie de la vapeur provenant de la turbine et un premier fluide au premier échangeur pour permettre la condensation de la première partie de vapeur pour produire un premier condensat, des conduites pour envoyer une deuxième partie de la vapeur provenant de la turbine et un deuxième fluide au deuxième échangeur pour permettre la condensation de la deuxième partie de vapeur pour produire un deuxième condensat, le premier fluide ayant une composition différente de celle du deuxième fluide et aucun moyen de modification de pression n'étant disposé entre la turbine à vapeur et le premier échangeur et/ou entre la turbine à vapeur et le deuxième échangeur. Eventuellement aucun moyen de modification de pression n'est disposé entre la turbine à vapeur et le premier échangeur et entre la turbine à vapeur et le deuxième échangeur. Optionally: - the first part of the steam and the second part condense at substantially the same pressure, - the condensation pressure is sub-atmospheric, - the first fluid is water, possibly seawater, - the second fluid is air, the second fluid is in forced flow, the flow rate of the first portion of vapor is variable as a function of the available flow rate of the first fluid, the first and second condensates are mixed, Another aspect of the invention is a steam condensing apparatus downstream of a steam turbine comprising a first exchanger, a second exchanger, pipes for sending a first portion of the steam from the turbine and a first fluid to the first exchanger to allow condensation of the first portion of vapor to produce a first condensate, conduits for sending a second portion of the steam from the turbine and n second fluid at the second heat exchanger to allow condensation of the second vapor portion to produce a second condensate, the first fluid having a composition different from that of the second fluid and no pressure modifying means being disposed between the steam turbine and the first exchanger and / or between the steam turbine and the second exchanger. Possibly no pressure modification means is disposed between the steam turbine and the first exchanger and between the steam turbine and the second exchanger.
L'invention sera décrite de façon plus détaillée en se référant à la figure 1. The invention will be described in more detail with reference to FIG.
Un débit 1 de vapeur d'eau est détendu dans une turbine à vapeur ST à une pression subatmosphérique. La vapeur d'eau détendue est divisée en deux parties. La première partie 3 est envoyée à un échangeur de chaleur, sans subir une modification de pression en dehors des pertes de charge, par contact indirect 7 où elle se condense au moins partiellement en se refroidissant contre un débit d'eau de refroidissement 1l, qui peut être de l'eau de mer. L'eau condensée ainsi produit par la condensation de vapeur est pressurisée par une pompe Pl. Le débit de la première partie 3 est variable en fonction du débit d'eau de refroidissement 11. S'il n'en a pas assez, toute la vapeur est envoyée à un échangeur de chaleur 9. A flow 1 of water vapor is expanded in a steam turbine ST at a subatmospheric pressure. The relaxed water vapor is divided into two parts. The first part 3 is sent to a heat exchanger, without undergoing a pressure modification outside the pressure losses, by indirect contact 7 where it condenses at least partially by cooling against a flow of cooling water 11, which may be sea water. The condensed water thus produced by the condensation of steam is pressurized by a pump Pl. The flow rate of the first part 3 is variable depending on the cooling water flow rate. not enough, all the steam is sent to a heat exchanger 9.
La deuxième partie de vapeur d'eau détendue 5 est envoyé à l'échanger de chaleur 9 où il se refroidit jusqu' à la condensation au moins partielle par échange de chaleur avec l'air, sans subir une modification de pression en dehors des pertes de charge. L'eau condensée ainsi produit par la condensation de vapeur est pressurisée par une pompe P2. Les deux 5 débits condensés provenant des pompes Pl et P2 sont mélangés pour former un débit unique d'eau condensée 15. 10 The second portion of expanded water vapor 5 is sent to the heat exchanger 9 where it cools to at least partial condensation by heat exchange with the air, without undergoing any pressure modification apart from the losses. charge. The condensed water thus produced by the condensation of steam is pressurized by a pump P2. The two condensed flows from pumps P1 and P2 are mixed to form a single flow of condensed water 15.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0858623A FR2939877A1 (en) | 2008-12-16 | 2008-12-16 | Downstream vapor condensation method for steam turbine utilized to drive e.g. air compressor, involves carrying out condensations of two vapor parts simultaneously at same pressure i.e. sub-atmospheric pressure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0858623A FR2939877A1 (en) | 2008-12-16 | 2008-12-16 | Downstream vapor condensation method for steam turbine utilized to drive e.g. air compressor, involves carrying out condensations of two vapor parts simultaneously at same pressure i.e. sub-atmospheric pressure |
Publications (1)
Publication Number | Publication Date |
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FR2939877A1 true FR2939877A1 (en) | 2010-06-18 |
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Family Applications (1)
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FR0858623A Withdrawn FR2939877A1 (en) | 2008-12-16 | 2008-12-16 | Downstream vapor condensation method for steam turbine utilized to drive e.g. air compressor, involves carrying out condensations of two vapor parts simultaneously at same pressure i.e. sub-atmospheric pressure |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2923044A4 (en) * | 2012-11-12 | 2016-11-09 | Rondane Lng As | A modified organic rankine cycle (orc) process |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2107478A (en) * | 1934-10-17 | 1938-02-08 | Happel Otto | Air-cooled surface condenser |
DE1501347A1 (en) * | 1964-11-06 | 1969-05-14 | Komplex Nagyberendezesek Expor | Steam-heated heat exchangers, in particular condensers |
GB2099126A (en) * | 1981-04-27 | 1982-12-01 | Foster Wheeler Energy Corp | Steam condenser |
US4506508A (en) * | 1983-03-25 | 1985-03-26 | Chicago Bridge & Iron Company | Apparatus and method for condensing steam |
DE10333009B3 (en) * | 2003-07-18 | 2004-08-19 | Gea Energietechnik Gmbh | Steam condensation device for steam turbine power generation plant uses cooling tower with natural air draught with upper condensers above cooling units supplied with heated cooling water from surface condenser |
-
2008
- 2008-12-16 FR FR0858623A patent/FR2939877A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2107478A (en) * | 1934-10-17 | 1938-02-08 | Happel Otto | Air-cooled surface condenser |
DE1501347A1 (en) * | 1964-11-06 | 1969-05-14 | Komplex Nagyberendezesek Expor | Steam-heated heat exchangers, in particular condensers |
GB2099126A (en) * | 1981-04-27 | 1982-12-01 | Foster Wheeler Energy Corp | Steam condenser |
US4506508A (en) * | 1983-03-25 | 1985-03-26 | Chicago Bridge & Iron Company | Apparatus and method for condensing steam |
DE10333009B3 (en) * | 2003-07-18 | 2004-08-19 | Gea Energietechnik Gmbh | Steam condensation device for steam turbine power generation plant uses cooling tower with natural air draught with upper condensers above cooling units supplied with heated cooling water from surface condenser |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2923044A4 (en) * | 2012-11-12 | 2016-11-09 | Rondane Lng As | A modified organic rankine cycle (orc) process |
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ST | Notification of lapse |
Effective date: 20110831 |