CN108895428A - Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving - Google Patents
Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving Download PDFInfo
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- CN108895428A CN108895428A CN201810508183.6A CN201810508183A CN108895428A CN 108895428 A CN108895428 A CN 108895428A CN 201810508183 A CN201810508183 A CN 201810508183A CN 108895428 A CN108895428 A CN 108895428A
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- water
- drum
- evaporator
- fused salt
- water supply
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, 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
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/003—Feed-water heater systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, 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
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/325—Schematic arrangements or control devices therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving.The water supply of part superheated steam heating starting feed-water heater after being heated using superheater, but economy is not high, because superheat steam temperature is high, it is excessively high to start feed-water heater design temperature, it is more demanding to equipment material, electric heater is set in evaporator system entrance, needs matched distribution facility, wastes electric energy.The present invention forms：The fused salt circulatory system（10）, watering cycle system（11）With water temperature lifting system（12）, water temperature lifting system includes starting feed-water heater（6）, starting feed-water heater and preheater 9 pass through piping connection, preheater and drum（5）Feed-water intake（16）By piping connection, the saturated vapor of drum is exported（15）With the steam inlet of starting feed-water heater（13）Pass through piping connection.The present invention is used for fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving.
Description
Technical field：
The present invention relates to a kind of evaporator systems, and in particular to a kind of fused salt tower type thermal generation evaporator system water supply water temperature promotion
System and method for improving.
Background technique：
The heat transfer medium of fused salt tower type thermal generation evaporator system is fused salt and water supply.From the point of view of current research, fused salt heat accumulation material
Material is largely binary salt, passes good hot working fluid in accumulation of heat application as solar light-heat power-generation, freezing point is 240 DEG C of left sides
The right side does not occur condensation, frozen block phenomenon to guarantee fused salt in using engineering, and evaporator system will have stringent heat preservation and heat tracing
Measure is controlled the feed temperature of evaporator system at 250 DEG C or more, is had at present using the method for control feed temperature following several
Kind：（1）The water supply of part superheated steam heating starting feed-water heater after being heated using superheater, but this method economy
Not high, because superheat steam temperature is high, starting feed-water heater design temperature is excessively high, more demanding to equipment material；（2）It is steaming
It sends out device system entry and electric heater is set, for heating water supply, but this method needs matched distribution facility, wastes electric energy；
（3）It is passed through the heat source preheating water supply of other systems, but this method increases the complexity of power station pipeline.
Summary of the invention：
The purpose of the present invention is overcoming existing evaporator system feed temperature that cannot reach 250 DEG C, other heating methods are not
Economic problem provides a kind of fused salt tower type thermal generation evaporation for guaranteeing starting feed-water heater exit water temperature at 250 DEG C or more
Device system water supply water temperature lifting system and method for improving.
Above-mentioned purpose is realized by following technical scheme：
A kind of fused salt tower type thermal generation evaporator system water supply water temperature lifting system, composition include：The fused salt circulatory system, water supply
The circulatory system and water temperature lifting system, the water temperature lifting system include starting feed-water heater, and the starting water supply adds
By piping connection, the feed-water intake of the preheater and drum passes through piping connection, the drum for hot device and preheater
Saturated vapor outlet and the steam inlet of the starting feed-water heater pass through piping connection.
The fused salt tower type thermal generation evaporator system water supply water temperature lifting system, the watering cycle system include
Evaporator and superheater, the evaporator are connect with the feedwater outlet of the drum by down-comer, the evaporator
It is connect with the vapour-liquid of drum mixing entrance by tedge, saturated vapor outlet and the overheat of the drum
Device passes through piping connection.
The fused salt tower type thermal generation evaporator system water supply water temperature lifting system, the fused salt circulatory system include
The superheater and the evaporator and the preheater, high-temperature molten salt successively pass through the superheater, described
Evaporator and the preheater enter in fused salt tank.
A kind of method for improving of fused salt tower type thermal generation evaporator system water supply water temperature lifting system, this method include as follows
Step：
（1）Water temperature lifting process；
When coolant-temperature gage is lower than 250 DEG C, water supply is entered by starting feed-water heater, and the fractional saturation steam that drum generates passes through full
Starting feed-water heater heating is enabled with steam (vapor) outlet to starting feed-water heater；
（2）Cyclic process；
When coolant-temperature gage reaches 250 DEG C, water supply is entered by starting feed-water heater, by preheater to drum, then by drum
By down-comer to evaporator, the liquid-vapor mixture in evaporator is mixed by tedge by the vapour-liquid of drum feedwater outlet again
Mouth enters, and by the steam-water separation of drum, saturated vapor is entered in superheater by the saturated vapor outlet of drum.
Beneficial effect：
1. starting feed-water heater is arranged in evaporator system entrance in the present invention, guarantee that starting feed-water heater exit water temperature exists
It 250 DEG C or more, prevents from causing fused salt condensation, fusing circulation, causes evaporator that pipe break fault occurs, guarantee preheater fused salt
Outlet temperature.
Present invention setting enables starting feed-water heater heating from the mode of drum outlet conduit extraction section saturated vapor, adopts
It takes effective measures control, adjust saturated vapor flow, as the heat source of starting feed-water heater, heat water supply to 250 DEG C or more.
The present invention effectively adjusts fused salt outlet temperature, reduces the cost of investment of system, significantly improves solar energy thermal-power-generating steaming
Send out the efficiency of device systematic heat utilization.
Starting feed-water heater is arranged in the present invention, can control preheating evaporator system inlets water supply, controls water temperature.
Preheater, which is arranged, in the present invention can be absorbed fused salt heat, reduce temperature of molten salt, heating water supply to undersaturated condition.
Detailed description of the invention：
Attached drawing 1 is structural schematic diagram of the invention；
In figure：1, evaporator；2, superheater；5, drum；6, start feed-water heater；9, preheater；10, fused salt cyclic system
System；11, watering cycle system；12, water temperature lifting system；13, steam inlet；14, vapour-liquid mixes entrance；15, saturated vapor goes out
Mouthful；16, feed-water intake；17, feedwater outlet；18, down-comer；19, tedge.
Specific embodiment：
Embodiment 1：
A kind of fused salt tower type thermal generation evaporator system water supply water temperature lifting system, composition include：The fused salt circulatory system 10 is given
Water circulation system 11 and water temperature lifting system 12, the water temperature lifting system include starting feed-water heater 6, the starting
By piping connection, the feed-water intake 16 of the preheater and drum 5 passes through piping connection for feed-water heater and preheater 9,
The saturated vapor outlet 15 of the drum and the steam inlet 13 of the starting feed-water heater pass through piping connection.
Embodiment 2：
According to fused salt tower type thermal generation evaporator system water supply water temperature lifting system described in embodiment 1, the watering cycle
System includes preheater 9, evaporator 1 and superheater 2, and the feed-water intake 16 of the preheater 9 and drum passes through piping connection,
The evaporator is connect with the feedwater outlet 17 of the drum by down-comer 18, the evaporator and the drum
Vapour-liquid mixing entrance 14 connected by tedge 19, saturated vapor outlet and the superheater of the drum pass through pipe
Road connection, superheater heat steam to superheat state.
Embodiment 3：
Fused salt tower type thermal generation evaporator system water supply water temperature lifting system, the fused salt according to embodiment 1 or 2 follow
Loop system includes that the superheater and the evaporator and the preheater, high-temperature molten salt successively pass through the overheat
Device, the evaporator and the preheater enter in fused salt tank.
Embodiment 4：
A kind of method for improving of fused salt tower type thermal generation evaporator system water supply water temperature lifting system, this method include following step
Suddenly：
（1）Water temperature lifting process；
When coolant-temperature gage is lower than 250 DEG C, water supply is entered by starting feed-water heater, and the fractional saturation steam that drum generates passes through full
Starting feed-water heater heating is enabled with steam (vapor) outlet to starting feed-water heater；
（2）Cyclic process；
When coolant-temperature gage reaches 250 DEG C, water supply is entered by starting feed-water heater, by preheater to drum, then by drum
By down-comer to evaporator, the liquid-vapor mixture in evaporator is mixed by tedge by the vapour-liquid of drum feedwater outlet again
Mouth enters, and by the steam-water separation of drum, saturated vapor is entered in superheater by the saturated vapor outlet of drum.
Water temperature lifting process sets initial water temperature as 220 DEG C, pressure 14.9MPa, into water temperature lifting process, from starting
The water temperature of feed-water heater discharge is 250 DEG C, pressure 14.8MPa, is 336 DEG C by the water temperature that preheater is discharged, pressure is
14.5MPa is 339.5 DEG C, pressure 14.5MPa by the water temperature that drum is discharged into drum, returns to starting water supply heating
Device.
Initial water temperature is set when normal operating cycle as 250 DEG C, pressure 14.9MPa, the water temperature into preheater is 250
DEG C, pressure 14.8MPa is 336 DEG C, pressure 14.6MPa by the water temperature that preheater enters drum, then the water supply by drum
Evaporator is arrived by down-comer in outlet, the liquid-vapor mixture in evaporator again by tedge by the vapour-liquid mixing entrance of drum into
Enter, by the steam-water separation of drum, saturated vapor is entered in superheater by the saturated vapor outlet of drum, into preheater
Water temperature is 339.5 DEG C, pressure 14.5MPa, and the water temperature by superheater discharge is 543 DEG C, pressure 14MPa；
High-temperature molten salt is 555 DEG C by the temperature that superheater enters, and the temperature by superheater discharge is 440.5 DEG C, by evaporator
The temperature of discharge is 342.8 DEG C, is finally 290 DEG C by the temperature of preheater discharge.
Claims (4)
1. a kind of fused salt tower type thermal generation evaporator system water supply water temperature lifting system, composition include：The fused salt circulatory system is given
Water circulation system and water temperature lifting system, it is characterized in that：The water temperature lifting system includes starting feed-water heater, described
Start feed-water heater and preheater by piping connection, the feed-water intake of the preheater and drum by piping connection,
The saturated vapor outlet of the drum and the steam inlet of the starting feed-water heater pass through piping connection.
2. fused salt tower type thermal generation evaporator system water supply water temperature lifting system according to claim 1, it is characterized in that：Institute
The watering cycle system stated includes evaporator and superheater, and the feedwater outlet of the evaporator and the drum passes through decline
Pipe connection, the evaporator are connect with the vapour-liquid of drum mixing entrance by tedge, the saturation of the drum
Steam (vapor) outlet and the superheater pass through piping connection.
3. fused salt tower type thermal generation evaporator system water supply water temperature lifting system according to claim 1, it is characterized in that：Institute
The fused salt circulatory system stated includes that the superheater and the evaporator and the preheater, high-temperature molten salt successively pass through
Superheater, the evaporator and the preheater enters in fused salt tank.
4. the promotion of fused salt tower type thermal generation evaporator system water supply water temperature lifting system described in a kind of one of claim 1-3
Method, it is characterized in that：This method comprises the following steps：
（1）Water temperature lifting process；
When coolant-temperature gage is lower than 250 DEG C, water supply is entered by starting feed-water heater, and the fractional saturation steam that drum generates passes through full
Starting feed-water heater heating is enabled with steam (vapor) outlet to starting feed-water heater；
（2）Cyclic process；
When coolant-temperature gage reaches 250 DEG C, water supply is entered by starting feed-water heater, by preheater to drum, then by drum
By down-comer to evaporator, the liquid-vapor mixture in evaporator is mixed by tedge by the vapour-liquid of drum feedwater outlet again
Mouth enters, and by the steam-water separation of drum, saturated vapor is entered in superheater by the saturated vapor outlet of drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508183.6A CN108895428A (en) | 2018-05-24 | 2018-05-24 | Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810508183.6A CN108895428A (en) | 2018-05-24 | 2018-05-24 | Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving |
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| CN108895428A true CN108895428A (en) | 2018-11-27 |
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| CN201810508183.6A Pending CN108895428A (en) | 2018-05-24 | 2018-05-24 | Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812788A (en) * | 2019-01-30 | 2019-05-28 | 上海锅炉厂有限公司 | It is a kind of can be with the fused salt steam generating system and its working method of quick start |
| CN110332512A (en) * | 2019-08-05 | 2019-10-15 | 杭州锅炉集团股份有限公司 | A kind of water quality heat absorber system applied to concentrating solar with superheat section |
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| CN204042829U (en) * | 2014-08-12 | 2014-12-24 | 淮南中科储能科技有限公司 | High-temperature molten salt steam generation and pre-heating system |
| CN206176325U (en) * | 2016-11-09 | 2017-05-17 | 东方电气集团东方锅炉股份有限公司 | A steam generation system for solar photothermal power |
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- 2018-05-24 CN CN201810508183.6A patent/CN108895428A/en active Pending
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| CN204042829U (en) * | 2014-08-12 | 2014-12-24 | 淮南中科储能科技有限公司 | High-temperature molten salt steam generation and pre-heating system |
| CN206176325U (en) * | 2016-11-09 | 2017-05-17 | 东方电气集团东方锅炉股份有限公司 | A steam generation system for solar photothermal power |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812788A (en) * | 2019-01-30 | 2019-05-28 | 上海锅炉厂有限公司 | It is a kind of can be with the fused salt steam generating system and its working method of quick start |
| CN109812788B (en) * | 2019-01-30 | 2023-11-24 | 上海锅炉厂有限公司 | Molten salt steam generation system capable of being started quickly and working method thereof |
| CN110332512A (en) * | 2019-08-05 | 2019-10-15 | 杭州锅炉集团股份有限公司 | A kind of water quality heat absorber system applied to concentrating solar with superheat section |
| CN110332512B (en) * | 2019-08-05 | 2024-01-16 | 西子清洁能源装备制造股份有限公司 | Water quality heat absorber system applied to concentrating solar band superheating section |
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Application publication date: 20181127 |