ES297748A1 - Apparatus and method for starting a forced through flow vapour generator and associated power plant - Google Patents
Apparatus and method for starting a forced through flow vapour generator and associated power plantInfo
- Publication number
- ES297748A1 ES297748A1 ES0297748A ES297748A ES297748A1 ES 297748 A1 ES297748 A1 ES 297748A1 ES 0297748 A ES0297748 A ES 0297748A ES 297748 A ES297748 A ES 297748A ES 297748 A1 ES297748 A1 ES 297748A1
- Authority
- ES
- Spain
- Prior art keywords
- clean
- turbine
- condenser
- boiler
- steam
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
-
- 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
- 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
- F22B29/12—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 operating with superimposed recirculation during starting and low-load periods, e.g. composite boilers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
A method of starting a forced flow once through steam generator and associated power plant operating at or above critical pressure including a feedwater heating system and a furnace lined with steam generating and superheating tubes consists of clean-up of preboiler equipment between the condenser and economizer, clean-up of economizer and furnace tube walls, clean-up of superheating section and warming, rolling and synchronizing the associated turbine plant. During this start up a major portion of the fluid input through the generating tubes is recirculated to provide protection against overheating. The working fluid is circulated by a turbine-driven feed pump 22 and a boost feed pump, Fig. 3 (not shown), through H.P. feedwater heater 24, steam operated feed valve 26, economizer 21, furnace tube walls 30a, 30b, boiler throttle and boiler throttle by-pass valves 32a, 32b, superheater 33, H.P. turbine 36, reheaters 38, 39, L.P. turbine 40 and condenser 10. Condensate is circulated by pump 12, through a filter and demineralizer 14, L.P. feedwater heater 18 and deaerator 16. Water of acceptable purity is supplied from a make-up tank 11 leading to the condenser 10 and the concentration of impurities such as copper and iron in the water is measured by chemical analysis equipment 33a, 33b, 33c, 33d. Fluid is recirculated by pump 28 through the furnace tubes 30a, 30b, via conduit 46. A flash tank 44 is connected, in parallel across valves 32a, 32b by conduits containing valves 42, 51, to the feedwater supply line by conduit 41 containing valve 37 and to the condenser by conduit 50. An auxiliary boiler 20 supplies steam for turbine seals, the deaerator 16 and for the initial operation of pump 22 and valve 26. The method of starting commences with preboiler clean-up comprising closing valves 26, 42, 51, filling the preboiler equipment with demineralized water and circulating it by pumps 12, 19 through the equipment and conduits 41, 45. Both feedwater heaters comprise two parallel heaters arranged so that the entire flow can be passed through each heater separately to increase the speed and efficiency of clean-up. When the impurities are reduced to an acceptable value, e.g. 20 p.p.b. boiler clean up is commenced by firing the boiler and circulating about 5% of maximum feed water flow through the economizer and tubes 30a, 30b, the flash tank 44 and the condenser, valve 42 controlling the pressure at which is gradually raised from 1000 to 3500 p.s.i.g. L.P. steam from tank 44 is passed through the superheaters for cooling and when it is sufficiently pure is passed from the tank through superheaters 38, 39 to the turbine to roll and synchronize it, the firing rate being gradually increased.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US267588A US3194217A (en) | 1963-03-25 | 1963-03-25 | Boiler cleanup method for combined circulation steam generator |
US267515A US3194216A (en) | 1963-03-25 | 1963-03-25 | Method and apparatus for preboiler cleanup of a once-through steam generator |
US267514A US3194218A (en) | 1963-03-25 | 1963-03-25 | Apparatus and method for starting forced flow once-through steam generating power plant |
Publications (1)
Publication Number | Publication Date |
---|---|
ES297748A1 true ES297748A1 (en) | 1964-09-01 |
Family
ID=27401976
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0297748A Expired ES297748A1 (en) | 1963-03-25 | 1964-03-18 | Apparatus and method for starting a forced through flow vapour generator and associated power plant |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE645379A (en) |
CH (1) | CH459263A (en) |
ES (1) | ES297748A1 (en) |
GB (1) | GB1044053A (en) |
NL (1) | NL6402944A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106765036A (en) * | 2016-12-07 | 2017-05-31 | 北京京诚科林环保科技有限公司 | condensed water circulation heating device |
-
1964
- 1964-03-05 GB GB940864A patent/GB1044053A/en not_active Expired
- 1964-03-18 ES ES0297748A patent/ES297748A1/en not_active Expired
- 1964-03-18 BE BE645379D patent/BE645379A/xx unknown
- 1964-03-18 CH CH352864A patent/CH459263A/en unknown
- 1964-03-19 NL NL6402944A patent/NL6402944A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BE645379A (en) | 1964-09-18 |
GB1044053A (en) | 1966-09-28 |
NL6402944A (en) | 1964-09-28 |
CH459263A (en) | 1968-07-15 |
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