EP0020821A1 - Procédé pour l'utilisation de la chaleur perdue des gaz d'échappement - Google Patents

Procédé pour l'utilisation de la chaleur perdue des gaz d'échappement Download PDF

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Publication number
EP0020821A1
EP0020821A1 EP79200353A EP79200353A EP0020821A1 EP 0020821 A1 EP0020821 A1 EP 0020821A1 EP 79200353 A EP79200353 A EP 79200353A EP 79200353 A EP79200353 A EP 79200353A EP 0020821 A1 EP0020821 A1 EP 0020821A1
Authority
EP
European Patent Office
Prior art keywords
heating
heated
feed water
condensate
condenser
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.)
Ceased
Application number
EP79200353A
Other languages
German (de)
English (en)
Inventor
Rolf Ing. Kehlhofer
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.)
BBC Brown Boveri AG Switzerland
Original Assignee
BBC Brown Boveri AG Switzerland
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 BBC Brown Boveri AG Switzerland filed Critical BBC Brown Boveri AG Switzerland
Priority to EP79200353A priority Critical patent/EP0020821A1/fr
Priority to JP8857080A priority patent/JPS5618008A/ja
Publication of EP0020821A1 publication Critical patent/EP0020821A1/fr
Ceased 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
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic

Definitions

  • the present invention relates to a method for utilizing the waste heat contained in an exhaust gas, in which this exhaust gas is passed through a waste heat boiler arranged in a steam circuit of a steam turbine system, the feed water being fed from a feed water tank to the waste heat boiler, evaporating in it, the steam thus generated the expansion in one.
  • Steam turbine is condensed in a heating condenser through which a gaseous or liquid medium to be heated, serving as a coolant, condenses, and the condensate thus obtained is returned to the feed water tank.
  • the object of the present invention is to create. a process that does not have this disadvantage and enables better use of this waste heat
  • This object is achieved according to the invention in a method of the type mentioned at the outset by preheating the medium to be heated by means of the heating condenser by means of at least one condensate-heated heating arrangement before being fed to the latter.
  • the condensate generated in the heating condenser is fed to the feed water tank after flowing through the heating arrangement which preheats the medium to be heated. It may also be expedient if the medium to be heated, which serves as a coolant in the heating condenser, is preheated by means of at least part of the feed water emerging from the feed water tank before being fed to the first condensate-heated heating arrangement.
  • the condensate generated in the heating condenser is fed to the heating arrangement which preheats the medium to be heated after flowing through the feed water tank.
  • the feed water tank is heated by means of extraction steam originating from the steam turbine, preferably a counter-pressure steam turbine.
  • the medium to be heated is heated by means of at least two heating condensers working at different pressure levels, the latter being supplied with condensing extraction steam from the steam turbine.
  • the condensate obtained from both heating condensers is mixed with one another and jointly supplied to the heating arrangement which preheats the medium to be heated, where it can be beneficial; if the condensate obtained from the heating condenser located at a higher pressure level is admixed with the condensate obtained from the heating condenser located at a lower pressure level by means of a condenser arranged between these two heating condensers, and that obtained from the heating condenser located at the lower pressure level, in this serves as a coolant, heating medium heating heating arrangement.
  • the exhaust gas fed to the waste heat boiler is heated at least temporarily by means of additional firing before it is introduced into the latter.
  • the method according to the invention is particularly suitable if the exhaust gas from a gas turbine or an internal combustion engine is fed to the waste heat boiler.
  • the exhaust gas originating, for example, from a gas turbine is also supplied via the exhaust gas supply line 1 and the additional firing 2 a temperature of about 1000 ° C. into a waste heat boiler 3.
  • This waste heat boiler 3 serves to evaporate the feed water fed to the waste heat boiler 3 from a feed water tank 5 at a temperature of about 80 to 85 ° C. via the feed water supply line 6.
  • the feed water brought in the vapor state in the waste heat boiler 3 is then fed via the steam line 7 to a counter-pressure steam turbine 8 which drives an electric generator 9.
  • a back pressure steam line 10 serves to supply back pressure steam into the feed water tank 5 for preheating the feed water located therein.
  • the steam flows via the discharge line 11 into a heating condenser 12, which is cooled, for example, by a heating water of a district heating system that is to be heated and serves as a coolant for the heating condenser 12 and is supplied via the heating water supply line 13 in such a way that the supplied steam condensed in the heating condenser 12 giving off heat to the heating water serving as a coolant.
  • the condensate obtained in this way is then fed by means of a condensate pump 14 to a condensate-heated heating arrangement 15, where the heating, supplied via the heating water supply line 13, has a temperature of approximately 60 ° C.
  • the heating water is preheated before the supply to the heating condenser 12 by the condensate in the heating arrangement 15 emitting heat to the heating water to be heated. After leaving the heating condenser 12, the heating water of the district heating has a temperature of about 30 to 100 ° C. in the heating water outlet line 16.
  • the condensate cooled in this way by giving off heat to the heating water is then returned to the feed water tank 5 at a temperature of approximately 65 ° C. via the condensate line 17.
  • the exhaust gas emerging from the waste heat boiler 3 via the exhaust gas discharge line 18 has a maximum temperature of approximately 100 to 110 ° C.
  • the same method can also be used, for example, to heat sea water to be desalinated and fed via the feed line 13 to a temperature of up to 120 ° C.
  • the condensate generated in the heating condenser 12 is first fed into the feed water by means of the condensate pump 14 via the condensate line 17 container 5 to direct where it is heated again by means of the extraction steam removed via the extraction steam line 10 of the counter-pressure steam turbine 8.
  • the feed water removed from the feed water container 5 is then fed by means of the feed water pump 4 to the condensate-heated heating arrangement 15, where it serves for preheating the heating water supplied through the heating water line 13.
  • the emerging from the heating assembly 15 feed water to a temperature of about 65 0 C, where it is fed at this temperature over the feedwater delivery line 6 to the waste heat boiler 3, which means at a lower temperature than in Fig.l plant shown.
  • feed water pump 4 instead of between the feed water container 5 and the condensate-heated heating arrangement 15 between the latter and the waste heat boiler 3 in the feed water line 6.
  • thermodynamically better process is brought about by means of a multi-stage heating of the heating water supplied via the heating water supply line 13.
  • two heating condensers 12 and 12 'working at different pressure levels are provided, with one steam condenser 12 being supplied with counterpressure steam via the discharge line 11 and the second heating condenser 12' with the extraction steam line 19 coming from the counterpressure steam turbine 8 via the extraction steam line 19.
  • the condensate obtained from the second heating condenser 12 'located at a higher pressure level is passed through a heating arrangement 15' arranged between these two heating condensers 12, 12 'before being mixed with condensate obtained from the first heating condenser 12 located at a lower pressure level.
  • This heating arrangement 15 ' serves to further heat the heating water obtained from the first heating condenser 12 located at the lower pressure stage.
  • the condensate After flowing through the second heating arrangement 15 'and emitting heat in it to the heating water to be heated, the condensate is admixed via the condensate connecting line 20 to the condensate emerging from the first heating condenser 12 and fed together with the aid of the condensate pump 14 to the first heating arrangement 15, from where the latter Mixture after heat is given off to the heating water to be heated, as in the system shown in FIG. 1, is fed to the feed water tank 5 via the condensate line 17.
  • the feed water in the feed water tank 5 is preheated by means of back pressure steam supplied from the back pressure steam turbine 8 via the back pressure steam line 10.
  • the outlet of the feed water container 5 is connected via an outlet line 21 and the feed water pump 4 to a bypass valve 22 and a heating valve 23.
  • the bypass valve 22 is via the bypass line 24 and the heating valve 23 via the feed water-heated heating arrangement 15 ′′ and the feed water line section 25 with the feed water supply line 6 opening into the waste heat boiler 3 connected.
  • bypass valve 22 is closed, so that all the feed water flowing out of the feed water container 5 via the outlet line 21 flows into the heating arrangement 15 ′′ via the open heating valve 23, where there is heat to the temperature flowing in via the heating water supply line 13, a temperature of about 60 ° C. has heating water, and then is fed to the waste heat boiler 3 via the feed water line section 25 and the subsequent feed water line 6 at a temperature of about 65 ° C. for evaporation.
  • the heating valve 23 is partially or completely closed and the bypass valve 22 is opened accordingly, so that less or no heat is generated in the heating arrangement 15 " to which heating water supplied via the heating water supply line 13 is released.

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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)
EP79200353A 1979-07-02 1979-07-02 Procédé pour l'utilisation de la chaleur perdue des gaz d'échappement Ceased EP0020821A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP79200353A EP0020821A1 (fr) 1979-07-02 1979-07-02 Procédé pour l'utilisation de la chaleur perdue des gaz d'échappement
JP8857080A JPS5618008A (en) 1979-07-02 1980-07-01 Method of utilizing heat of exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP79200353A EP0020821A1 (fr) 1979-07-02 1979-07-02 Procédé pour l'utilisation de la chaleur perdue des gaz d'échappement

Publications (1)

Publication Number Publication Date
EP0020821A1 true EP0020821A1 (fr) 1981-01-07

Family

ID=8186293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79200353A Ceased EP0020821A1 (fr) 1979-07-02 1979-07-02 Procédé pour l'utilisation de la chaleur perdue des gaz d'échappement

Country Status (2)

Country Link
EP (1) EP0020821A1 (fr)
JP (1) JPS5618008A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836463A1 (de) * 1988-10-26 1990-05-03 Ruhrgas Ag Verfahren und vorrichtung zur nutzung der abwaerme eines prozesses
CN102400719A (zh) * 2011-11-28 2012-04-04 北京北重汽轮电机有限责任公司 采暖供热热电联产汽轮机
CN112983579A (zh) * 2021-03-09 2021-06-18 西安交通大学 一种热力发电厂冷端系统及其效率寻优方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573337A (en) * 1978-11-30 1980-06-03 Nippon Oil & Fats Co Ltd Emulsifying or solubilizing composition
JPWO2010092684A1 (ja) * 2009-02-13 2012-08-16 トヨタ自動車株式会社 作動ガス循環型エンジン
KR102165976B1 (ko) 2016-03-29 2020-10-15 미츠비시 쥬고교 가부시키가이샤 가스 터빈 플랜트, 및 그 운전 방법

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB295326A (en) * 1927-08-09 1929-11-01 Siemens Ag Counter pressure steam power installation
FR1043235A (fr) * 1950-10-06 1953-11-06 Escher Wyss Ag Installation de force motrice à vapeur équipée d'une turbine à contrepression
DE1099888B (de) * 1955-09-30 1961-02-16 Siemens Ag Nassdampferzeugeranlage, insbesondere auf Tankschiffen
DE2513581A1 (de) * 1975-03-06 1976-09-09 Bbc Brown Boveri & Cie Turbinenregelung eines heizkraftwerkes
DE2512774A1 (de) * 1975-03-22 1976-09-30 Bbc Brown Boveri & Cie Gasturbinen-heizkraftwerk

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB295326A (en) * 1927-08-09 1929-11-01 Siemens Ag Counter pressure steam power installation
FR1043235A (fr) * 1950-10-06 1953-11-06 Escher Wyss Ag Installation de force motrice à vapeur équipée d'une turbine à contrepression
DE1099888B (de) * 1955-09-30 1961-02-16 Siemens Ag Nassdampferzeugeranlage, insbesondere auf Tankschiffen
DE2513581A1 (de) * 1975-03-06 1976-09-09 Bbc Brown Boveri & Cie Turbinenregelung eines heizkraftwerkes
DE2512774A1 (de) * 1975-03-22 1976-09-30 Bbc Brown Boveri & Cie Gasturbinen-heizkraftwerk

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836463A1 (de) * 1988-10-26 1990-05-03 Ruhrgas Ag Verfahren und vorrichtung zur nutzung der abwaerme eines prozesses
DE3836463C2 (de) * 1988-10-26 1998-09-10 Ruhrgas Ag Verfahren und Vorrichtung zur Nutzung der Abwärme eines Prozesses
CN102400719A (zh) * 2011-11-28 2012-04-04 北京北重汽轮电机有限责任公司 采暖供热热电联产汽轮机
CN112983579A (zh) * 2021-03-09 2021-06-18 西安交通大学 一种热力发电厂冷端系统及其效率寻优方法
CN112983579B (zh) * 2021-03-09 2022-06-07 西安交通大学 一种热力发电厂冷端系统及其效率寻优方法

Also Published As

Publication number Publication date
JPS5618008A (en) 1981-02-20

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): AT CH DE FR GB NL SE

17P Request for examination filed

Effective date: 19810328

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: BBC AKTIENGESELLSCHAFT BROWN, BOVERI & CIE.

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Effective date: 19830525

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KEHLHOFER, ROLF, ING.