CN107208880A - Raw water preheating in power generating equipment - Google Patents

Raw water preheating in power generating equipment Download PDF

Info

Publication number
CN107208880A
CN107208880A CN201580074344.XA CN201580074344A CN107208880A CN 107208880 A CN107208880 A CN 107208880A CN 201580074344 A CN201580074344 A CN 201580074344A CN 107208880 A CN107208880 A CN 107208880A
Authority
CN
China
Prior art keywords
water
steam
raw water
power generating
generating equipment
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.)
Pending
Application number
CN201580074344.XA
Other languages
Chinese (zh)
Inventor
迈克尔·黑格尔
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.)
Siemens AG
Original Assignee
Siemens AG
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 to DE102015201143 priority Critical
Priority to DE102015201143.7 priority
Application filed by Siemens AG filed Critical Siemens AG
Priority to PCT/EP2015/079113 priority patent/WO2016116216A1/en
Publication of CN107208880A publication Critical patent/CN107208880A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K17/00Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/02Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/28Feed-water heaters, i.e. economisers or like preheaters for direct heat transfer, e.g. by mixing water and steam
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D7/00Auxiliary devices for promoting water circulation
    • F22D7/04Injectors for water or steam
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22STEAM GENERATION
    • F22DPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D7/00Auxiliary devices for promoting water circulation
    • F22D7/12Control devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01KSTEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K7/00Steam 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
    • F01K7/16Steam 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 only of turbine type

Abstract

The present invention relates to a kind of method for being used to preheat the raw water in the power generating equipment (1) with water vapour circulation loop (2), the power generating equipment (1) includes:Steam generator (3), steam turbine (4) and steam pipework (5), steam generator (3) is connected with steam turbine (4) by least some steam pipeworks in the steam pipework, the raw water for producing deionized water is wherein heated by the waste water in water vapour circulation loop (2), and waste water is mixed into raw water, to heat raw water.The invention further relates to a kind of power generating equipment (1).

Description

Raw water preheating in power generating equipment
Technical field
The present invention relates to a kind of method for being used to preheat the raw water in especially power generating equipment.Have the invention further relates to one kind The power generating equipment of water-steam circuit.
Background technology
In the power plant with steam output coupler, it usually needs substantial amounts of deionized water, that is, go mineral ( It is:Full desalination) water, the circulation loop loss that output is produced, the steam coupling output dress are coupled by steam to compensate Put the Hui Yin mechanisms with or without the part of condensate.Raw water does not have for production especially in the case where external temperature is low Temperature needed for raw deionized water.Here, up to now, by steam or electrically heating raw water in advance, this causes height Machine context and electricity in terms of consuming, efficiency reduction or itself consumption improve.
The content of the invention
The purpose of the present invention is:Continue the equipment improved proposed method and proposed so that realization is significantly decreased Expend.
According to the present invention, the purpose is wanted by the method according to claim 1 for being used to preheat raw water and according to right 7 power generating equipment is asked to realize.Limit the present invention in the corresponding dependent claims is advantageously improved form.For pre- In the method for raw water in power generating equipment of the heat with water-steam circuit, by the waste water pair from water-steam circuit Raw water for producing deionized water is heated, wherein waste water is mixed into raw water to heat raw water, is realized through the above way: Using the waste heat in waste water and reduce power generating equipment itself consume or improve efficiency, wherein the power generating equipment includes:Steam Vapour generator, steam turbine and steam pipework, by least some by steam generator and vapor wheel in the steam pipework Machine is connected.
Here, waste water is following water, the water leave water-steam circuit and generally export in cooling water or It is dropped after cooling down again accordingly.It is to have existed for the container and affiliated pump of waste water and for the pipeline of cold water 's.Only arriving the pipeline branch road of raw water mixing arrangement must be supplemented with accessory.
If waste water is mixed into raw water to heat raw water, then occur without thermal loss, such as added via low-pressure steam It is such when hot.In the case of correspondingly selection waste water, the waste water can be also further used as raw water.
Herein suitably:Waste water is from steam generator, particularly from the sewer in steam drum.
Alternatively or additionally can be advantageously:Waste water is the condensate in steam pipework, the steam pipework Automatically it is dehydrated at minimum point.
In terms of the good mixing of waste water and raw water advantageously:Waste water is distributed in raw water.
It is also advantageous that:Carry out closed-loop control raw water temperature via water amount of blowdown is changed.
Enable in particular to advantageously:Compared with the water required for based on chemistry in water treatment requirement, the heat based on preheating is needed Seek the more water of discharge.Only occur in this case but also there was only relatively small efficiency reduction, because herein from steam generator It is middle to extract additional heat.The autophage of electricity is not raised.Under any circumstance, raw water is carried out via boiler emission is changed The closed-loop control of temperature.Therefore also it is possible that:Set and optimal temperature is produced for deionized water.
With water-steam circuit according in the power generating equipment of the present invention, raw water mixing arrangement and for from The container of the waste water of water-steam circuit is fluidly coupled to each other, wherein being provided with raw water mixing arrangement is used for waste water point Equipment of the cloth in raw water, wherein power generating equipment includes:Steam generator;Steam turbine;And steam pipework, the steam pipe Steam generator is connected by least a portion on road with steam turbine;Raw water mixing arrangement;And for from water-steam circulation The container of the waste water in loop.Waste water, which is distributed in raw water, improves mixing.
Herein desirably:Container for the waste water from water-steam circuit is connected with steam generator.Especially It, accumulation produces sewer generally on the steam drum of steam generator.
In addition desirably:Container for the waste water from water-steam circuit is connected with steam pipework.It is described to steam Vapor pipeline be automatically dehydrated at its minimum point and accumulate generation condensate it is typically unpolluted.
In another advantageous embodiment of the power generating equipment according to the present invention, provided with for closed-loop control raw water temperature Closed-loop control device.Therefore, it is possible to set the temperature optimal for producing deionized water.
Herein desirably:Closed-loop control mechanism for raw water temperature includes the opened loop control mechanism of water amount of blowdown.
It is different from the condensate in steam pipework, it can easily set water amount of blowdown.
Brief description of the drawings
Illustratively accompanying drawing elaborates the present invention.It shows schematically and not to scale:
Fig. 1 shows power generating equipment, and
Fig. 2 shows the method according to the invention for preheating raw water.
Embodiment
Fig. 1 shows the power generating equipment 1 according to the present invention.Combustion gas is configured to according to Fig. 1 power generating equipment 1 and steam turbine is set Apply and including gas turbine facility 11 and steam turbine facility 12.Gas turbine facility 11 is included with the air compression coupled The gas turbine 13 of machine 14 and the combustion chamber 15 for being connected to the upstream of gas turbine 13, the combustion chamber is connected to the pressure of compressor 14 On contracting air pipe line 16.Gas turbine 13 and air compressor 14 and generator 17 are arranged on common axle 18.Via combustion Expects pipe road 40 carries out fuel supply.
Steam turbine facility 12 includes the steam turbine 4 with the generator 19 coupled, and in water-steam circuit 2 include being connected to the condenser 20 and waste heat steam generator 3 in the downstream of steam turbine 4.The only pole in Fig. 1 of steam turbine 4 It simplifiedly shows, and is generally made up of in main facilities multiple pressure stages unshowned in Fig. 1, the pressure stage allusion quotation Generator 19 is driven via common axle 21 type.
Waste heat steam generator 3 is also extremely simplifiedly shown.In order to which the acting medium that will be expanded in gas turbine 13 is defeated It is sent in waste heat steam generator 3, gas exhaust piping 22 is connected on the input 23 of waste heat steam generator 3.Come from combustion gas The acting medium of expansion in turbine 13 is via the output end 24 of waste heat steam generator towards the direction for the chimney not being shown specifically Leave the waste heat steam generator 3.
Via condensate line 26 condensate come in condenser 20 can be fed to feed-water vessel/degasser 25.Give Setting of the water receptacle/degasser 25 in Fig. 1 water-steam circuit 2 is only illustratively shown.Feed pump 28 will be to the water capacity The feedwater that device/degasser 25 flows out is placed on appropriate stress level.Feedwater is conveyed to waste hot steam via feed water preheater 29 Corresponding pressure stage in generator 3, the feed water preheater is connected on steam drum 30 in outlet side.Steam drum 30 is formed with being used for The evaporator 31 of water-steam circulation is connected, and the evaporator is arranged in waste heat steam generator 3.In order to export live steam, Steam drum 30 is connected on the superheater 32 being arranged in waste heat steam generator 3, the superheater is in outlet side via steam Pipeline 5 is connected with the steam inlet 33 of steam turbine 4.
Steam output coupler 34 for steam supply system is illustratively shown at steam turbine 4.In principle, steam Vapour output coupler can be arranged on the different positions of steam turbine, but can also be arranged on waste heat steam generator In 3 region.Condensate feedback device 35 is illustratively passed through in condensate line 26.
In addition, power generating equipment 1 includes raw water mixing arrangement 6 and for the waste water in water-steam circuit 2 Container 7, the container and raw water mixing arrangement are fluidly coupled to each other according to the present invention.Being provided with raw water mixing arrangement 6 is used for Waste water is distributed in the equipment 8 in raw water.
Container 7 for the waste water in water-steam circuit 2 is connected with steam generator 3, and outstanding there It is connected with steam drum 30 and is connected with steam pipework 5.
For closed-loop control raw water temperature, provided with closed-loop control device 9, the closed-loop control device is on the one hand by temperature Sensor 36 detects current raw water temperature, and on the other hand transports the corresponding wastewater flow rate for coming from container 7 by pump 37 Into raw water mixing arrangement 6, the pump is connected in the water lines 41 between container 7 and raw water mixing arrangement 6.If for pre- The heat demand in raw water mixing arrangement 6 of pyrogen water exceedes the heat that can be reached by the water being present in container 7, The water of discharge is so improved via corresponding open ring control device 10, even if need not so be carried based on chemistry in water treatment requirement It is also such during the water of height discharge.
Finally, Fig. 1 shows the equipment 38 for removing mineral for carrying out water process to include, and the equipment is arranged on raw water mixing dress Put between 6 and feed-water vessel/degasser 25, the feed-water vessel/degasser has corresponding pump 39.Here, also merely exemplary Ground shows deionized water being fed in water-steam circuit 2.
Fig. 2 shows the method for preheating the raw water in power generating equipment 1, wherein by from water-steam circuit 2 In waste water heat raw water for producing deionized water.In first step 42, raw water must be improved completely by checking whether Temperature.If it is not the case, so terminating 43 this method.If the temperature of raw water should be improved, then in second step 44 It is middle to check:Whether the waste water of standing crop is enough for the purpose.If it is, in third step 45 from for Waste water is imported into raw water mixing arrangement 6 in the container 7 of waste water in water-steam circuit 2.If the amount is not No more, then in addition to third step 45, four steps 46 is performed, wherein further being discharged, container 7 is thus brought up to Pumped water flow rate.

Claims (11)

1. one kind is used for the method for preheating the raw water in the power generating equipment (1) with water-steam circuit (2), the generating Facility (1) includes:Steam generator (3), steam turbine (4) and steam pipework (5), by least one in the steam pipework The steam generator (3) is connected by a little steam pipeworks with the steam turbine (4), wherein by being followed from the water-steam Waste water in loop back path (2) heats the raw water for producing deionized water, it is characterised in that the waste water is mixed into the original Water, to heat the raw water.
2. according to the method described in claim 1, wherein the waste water is to come from the sewer in the steam generator (2).
3. according to the method described in claim 1, wherein the waste water is to come from the condensate in the steam pipework (5).
4. the method according to any one of the claims, wherein the waste water is distributed in the raw water.
5. the method according to any one of the claims, wherein carrying out closed-loop control raw water temperature via water amount of blowdown is changed Degree.
6. method according to claim 5, wherein compared with the water required for based on chemistry in water treatment requirement, based on preheating Heat demand discharge more water.
7. one kind has the power generating equipment (1) of water-steam circuit (2), the power generating equipment (1) includes:Steam generator (3);Steam turbine (4);And steam pipework (5), at least a portion of the steam pipework by the steam generator (3) with Steam turbine (4) connection;Raw water mixing arrangement (6);And for the waste water from the water-steam circuit (2) Container (7), it is characterised in that the raw water mixing arrangement (6) and for useless from the water-steam circuit (2) The container (7) of water is fluidly coupled to each other, and is provided with and is used for the waste water wherein in the raw water mixing arrangement (6) It is distributed in the equipment in the raw water.
8. power generating equipment (1) according to claim 7, wherein for the waste water from the water-steam circuit (2) The container (7) be connected with the steam generator (3).
9. power generating equipment (1) according to claim 7, wherein for the waste water from the water-steam circuit (2) The container (7) be connected with the steam pipework (5).
10. the power generating equipment (1) according to any one of claim 7 to 9, is provided with being used for raw water described in closed-loop control The closed-loop control device (9) of temperature.
11. power generating equipment (1) according to claim 10, wherein the closed-loop control device for the raw water temperature (9) the opened loop control mechanism (10) of water amount of blowdown is included.
CN201580074344.XA 2015-01-23 2015-12-09 Raw water preheating in power generating equipment Pending CN107208880A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE102015201143 2015-01-23
DE102015201143.7 2015-01-23
PCT/EP2015/079113 WO2016116216A1 (en) 2015-01-23 2015-12-09 Pre-heating of untreated water in power plants

Publications (1)

Publication Number Publication Date
CN107208880A true CN107208880A (en) 2017-09-26

Family

ID=55024070

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201580074344.XA Pending CN107208880A (en) 2015-01-23 2015-12-09 Raw water preheating in power generating equipment

Country Status (6)

Country Link
US (1) US20180016947A1 (en)
EP (1) EP3204622B1 (en)
JP (1) JP2018508732A (en)
KR (1) KR20170105596A (en)
CN (1) CN107208880A (en)
WO (1) WO2016116216A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101065559A (en) * 2004-11-30 2007-10-31 西门子公司 A steam power station, especially a steam power station of a power plant used for generating at least electric power, and corresponding steam power station
CN202118881U (en) * 2011-06-30 2012-01-18 内蒙古电力勘测设计院 Raw water heating system for power station
CN202132931U (en) * 2011-06-28 2012-02-01 三峡电力职业学院 System for recycling residual heat of discharged sewage of boiler
CN202970814U (en) * 2012-12-17 2013-06-05 严利 High-temperature steam waste heat electricity generation energy-saving system
DE102012217717A1 (en) * 2012-09-28 2014-04-03 Siemens Aktiengesellschaft Process for the recovery of process waste water from a steam power plant

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1052418A (en) *
US4510755A (en) * 1983-08-10 1985-04-16 Transamerica Delaval Inc. Demineralization of feed water in a steam system
WO1988004008A1 (en) * 1986-11-25 1988-06-02 Abco Technology Limited Steam boiler system
KR20080114274A (en) * 2007-06-27 2008-12-31 엘지전자 주식회사 Digital broadcasting signal and apparatus and method of processing the signal
US8069667B2 (en) * 2009-02-06 2011-12-06 Siemens Energy, Inc. Deaerator apparatus in a superatmospheric condenser system
GB201105971D0 (en) * 2011-04-08 2011-05-18 Emvertec Ltd Biomass plant
EP2551477A1 (en) * 2011-07-29 2013-01-30 Siemens Aktiengesellschaft Method and fossil fuel powered power plant for recovering a condensate
JP6191070B2 (en) * 2012-05-25 2017-09-06 三菱重工環境・化学エンジニアリング株式会社 Ammonia treatment system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101065559A (en) * 2004-11-30 2007-10-31 西门子公司 A steam power station, especially a steam power station of a power plant used for generating at least electric power, and corresponding steam power station
CN202132931U (en) * 2011-06-28 2012-02-01 三峡电力职业学院 System for recycling residual heat of discharged sewage of boiler
CN202118881U (en) * 2011-06-30 2012-01-18 内蒙古电力勘测设计院 Raw water heating system for power station
DE102012217717A1 (en) * 2012-09-28 2014-04-03 Siemens Aktiengesellschaft Process for the recovery of process waste water from a steam power plant
CN202970814U (en) * 2012-12-17 2013-06-05 严利 High-temperature steam waste heat electricity generation energy-saving system

Also Published As

Publication number Publication date
EP3204622B1 (en) 2018-08-01
KR20170105596A (en) 2017-09-19
EP3204622A1 (en) 2017-08-16
WO2016116216A1 (en) 2016-07-28
US20180016947A1 (en) 2018-01-18
JP2018508732A (en) 2018-03-29

Similar Documents

Publication Publication Date Title
CN102116469B (en) Water supply and drainage system for medium-pressure heater of power plant
US9453432B2 (en) Power generation system
CN101644192B (en) System und anordnungen zur heisswasserentnahme zum vorheizen von brennstoff in einem kombizykluskraftwerk
RU2153081C1 (en) Combined-cycle-plant and its operating process
US20040128976A1 (en) Gas and steam power plant for water desalination
CN104279058A (en) Power plant with integrated fuel gas preheating
JP2012007762A (en) Drain recovery facility
CN101713339A (en) Apparatus for steam attemperation using fuel gas heater water discharge to reduce feedwater pump size
CN105090925A (en) Oxy boiler power plant oxygen feed system heat integration
CN105358909A (en) Method for preheating feed water in steam power plants, with process steam outcoupling
CN108915808A (en) Double pressure back pressure turbine heating systems
KR101249203B1 (en) Steam generator
JP2009097735A (en) Feed-water warming system and exhaust heat recovering boiler
CN107208880A (en) Raw water preheating in power generating equipment
CN106062319B (en) Flash tank design
CN108138603A (en) The progress control method of combined cycle equipment and combined cycle equipment
KR102019616B1 (en) Condensate Recirculation
RU2602649C2 (en) Steam turbine npp
CN109520001A (en) A kind of heat supply network draining system
CN105626172B (en) A kind of steam turbine generating equipment
CN106574770B (en) The steam cooling method of boiler, combined cycle complete set of equipments and boiler
RU2600655C2 (en) Method of operating thermal power plant with open heat extraction system and device therefor
RU2109962C1 (en) Thermal power plant
CN106968732A (en) Run the method for steam generating equipment and implement the steam generating equipment of methods described
CN106338208A (en) Heat supply network drain recovery system and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170926

WD01 Invention patent application deemed withdrawn after publication