GB1208425A - Improvements in or relating to power plant - Google Patents

Improvements in or relating to power plant

Info

Publication number
GB1208425A
GB1208425A GB4796367A GB4796367A GB1208425A GB 1208425 A GB1208425 A GB 1208425A GB 4796367 A GB4796367 A GB 4796367A GB 4796367 A GB4796367 A GB 4796367A GB 1208425 A GB1208425 A GB 1208425A
Authority
GB
United Kingdom
Prior art keywords
steam
feed water
turbine
heater
passing
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.)
Expired
Application number
GB4796367A
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.)
Babcock International Ltd
Original Assignee
Babcock and Wilcox Ltd
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 FR80729A external-priority patent/FR1504666A/fr
Priority claimed from FR80730A external-priority patent/FR1504667A/fr
Application filed by Babcock and Wilcox Ltd filed Critical Babcock and Wilcox Ltd
Publication of GB1208425A publication Critical patent/GB1208425A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B29/00—Steam boilers of forced-flow type
    • F22B29/06—Steam boilers of forced-flow type of once-through type, i.e. built-up from tubes receiving water at one end and delivering superheated steam at the other end of the tubes
    • 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
    • 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
    • F01K17/06—Returning energy of steam, in exchanged form, to process, e.g. use of exhaust steam for drying solid fuel or plant
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/40—Use of two or more feed-water heaters in series
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/44—Use of steam for feed-water heating and another purpose
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G5/00—Controlling superheat temperature
    • F22G5/20—Controlling superheat temperature by combined controlling procedures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)

Abstract

1,208,425. Feedwater heating; heating air for combustion. BABCOCK & WILCOX Ltd. 20 Oct., 1967 [20 Oct., 1966 (2)], No. 47963/67. Headings F4A and F4B. [Also in Division F1] The invention relates to a power plant comprising a steam turbine having a relatively high pressure stage and a relatively low pressure stage, steam generator means for supplying superheated steam, the steam being passed in series flow through the high and low pressure stages of the turbine, means for bleeding steam from the low pressure stage of the turbine, the bleed steam being utilized for feed water heating also for preheating combustion air being supplied to the combustion section of the steam generator, there being further means for heating the feed water in a flue gas cooler by combustion gases exhausting from the combustion section of the steam generator. In Fig. 1 the plant comprises a steam generator 1 having an economizer 2, a superheater not shown, also a reheater 4, superheated steam passing through line 5 to the HP turbine stage 6, the steam then passing to the reheater 4 and then to the LP turbine stage 7. Steam from the turbine stage 7 is condensed in condenser 8 and is then supplied by condensate pump 9 through line 10 to the feed water heater 11 where it is heated by steam bled from the LP turbine 7 at 12. The feed water is now divided into two streams in parallel flow, one stream q 2 passing through a second feed water heater 13 where it is heated by steam bled from the LP turbine at 14, the feed water then passing to de-aerator 15. The second stream q 1 passes through a heater 3 through which combustion gases from the steam generator are discharged thus constituting a flue gas cooler. The feed water discharges from the heater into the de-aerator 15 together with the first stream q 2 , the total feed water then passing through feed water pump 16 and economizer 2 to the team generator. Steam bled from the LP turbine at the points 12 and 14 is also utilized to preheat combustion air in the heaters 19 and 20 respectively, the air being supplied by blower 17 through line 18. In Fig. 2, (not shown), the feed water stream q 2 discharging from the feed water heater 13 is passed to the heater 3 and rejoins the feed water stream q 1 at an intermediate point on the heater. In Fig. 3 an auxiliary steam generator 21 is provided in the combustion gas flow upstream of the heater 3, steam from the generator passing through the line 23 to the de-aerator 15. The burner of the steam generator 21 is indicated at 22. The plant in Fig. 4 is similar to that of Fig. 1 except that a distributer D responsive to the temperature T of the steam in the superheater 4a is provided to control the proportions of the steam flows q 2 and q 1 . An auxiliary steam generator may be provided as in Fig. 3, the flow of steam to the de-aerator 15 through line 23, or the supply of fuel to the burner 22, being controlled in dependence on the temperature T of the steam from the superheater 4a.
GB4796367A 1966-10-20 1967-10-20 Improvements in or relating to power plant Expired GB1208425A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR80729A FR1504666A (en) 1966-10-20 1966-10-20
FR80730A FR1504667A (en) 1966-10-20 1966-10-20

Publications (1)

Publication Number Publication Date
GB1208425A true GB1208425A (en) 1970-10-14

Family

ID=26173782

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4796367A Expired GB1208425A (en) 1966-10-20 1967-10-20 Improvements in or relating to power plant

Country Status (2)

Country Link
GB (1) GB1208425A (en)
NL (1) NL6714280A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323500B1 (en) * 1987-06-18 1992-05-06 KORPELA, Timo Procedure for improving the efficiency of a steam power plant process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0323500B1 (en) * 1987-06-18 1992-05-06 KORPELA, Timo Procedure for improving the efficiency of a steam power plant process

Also Published As

Publication number Publication date
NL6714280A (en) 1968-04-22

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees