CN204042829U - High-temperature molten salt steam generation and pre-heating system - Google Patents
High-temperature molten salt steam generation and pre-heating system Download PDFInfo
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- CN204042829U CN204042829U CN201420453678.0U CN201420453678U CN204042829U CN 204042829 U CN204042829 U CN 204042829U CN 201420453678 U CN201420453678 U CN 201420453678U CN 204042829 U CN204042829 U CN 204042829U
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Abstract
The utility model provides a kind of high-temperature molten salt steam generation and pre-heating system, relate to fused salt steam generating system technical field, comprise cold tank, hot tank, electric furnace, pump for liquid salts equipment, blender, superheater, evaporimeter, preheater, startup heater, electric boiler, water pump and valve, pump for liquid salts, electric furnace and hot tank are connected formation fused salt heat absorption flow channel successively; Pump for liquid salts, blender, superheater, evaporimeter, preheater and cold tank are connected successively and are formed another fused salt flows exothermic passage; Start heater, valve, preheater, evaporimeter and superheater to connect successively formation water/steam flow channel, evaporimeter is also connected with startup heater, start on heater and be provided with feed-water intake and condensation-water drain, superheater is provided with superheated steam outlet; Evaporimeter, electric boiler, water pump and preheater are connected formation water circulation heating circuit successively.The utility model can avoid fused salt heat exchanging equipment frozen block accident occurs when starting and produces larger thermal stress, improves the operation stability of equipment.
Description
Technical field
The utility model relates to fused salt steam generating system technical field, particularly relates to a kind of high-temperature molten salt steam generation and pre-heating system.
Background technology
Fused salt is a kind of heat transfer and heat-storage medium of high-quality, and its good heat-transfer, serviceability temperature are high, thermal capacity is large, low price, are widely used in heat reservoir.Fused salt steam generating system, by fused salt and water/steam heat-exchanging, by the fused salt heat energy transmission feedwater/steam stored, and produces high temperature and high pressure steam for generating, heat supply or refrigeration.Therefore, fused salt steam generating system is the important component part of power generation molten salt energy storage system, be realize store up the key that fused salt heat energy effectively utilizes.
Conventional heat accumulation molten salt composition is 60%NaNO
3and 40%KNO
3, serviceability temperature scope 290 DEG C-565 DEG C, its freezing point is up to 220 DEG C, and equipment goes to toward temperature lower in driving.Therefore, very strict to the control of temperature in fused salt steam generating system start-up course, be avoid fused salt generation frozen block on the one hand, the equipment that affects runs; Be the thermal stress avoiding the too fast generation of variations in temperature in heat transmission equipment larger on the other hand, and cause equipment to destroy.Therefore, the preheating step of fused salt steam generating system when starting is extremely important, is the prerequisite of heat transmission equipment safe and stable operation.
Utility model content
The purpose of this utility model is the defect existed for prior art, proposes a kind of high-temperature molten salt steam generation and pre-heating system, is intended to avoid fused salt heat exchanging equipment frozen block accident occurs when starting and produces larger thermal stress, improves the operation stability of equipment.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of high-temperature molten salt steam generation and pre-heating system, it is characterized in that: comprise cold tank, hot tank, electric furnace, three pump for liquid salts, blender, superheater, evaporimeter, preheater, startup heater, electric boiler, water pump and multiple valves, three pump for liquid salts are submerged pump, two pump for liquid salts are wherein had to be installed on cold tank top, be respectively the first pump for liquid salts and the second pump for liquid salts, a pump for liquid salts is installed on hot tank top, is the 3rd pump for liquid salts; First pump for liquid salts, electric furnace and hot tank are connected formation fused salt flow channel successively; 3rd pump for liquid salts, blender, superheater, evaporimeter, preheater and cold tank are connected successively and are formed another article of fused salt flow channel, and blender is also connected with the second pump for liquid salts by valve G; Start heater, valve B, preheater, evaporimeter, valve C and superheater to connect successively formation water/steam flow channel, evaporimeter is also connected by valve D with startup heater, start on heater and be provided with feed-water intake and condensation-water drain, superheater is provided with superheated steam outlet; Evaporimeter, valve F, electric boiler, water pump, valve A and preheater are connected formation water-flow circuit successively, and evaporimeter is also communicated with by valve E with the top of electric boiler.
Described superheater, evaporimeter and preheater are the shell-and-tube fused salt-water/vapor heat exchanger of TEMA standard, and all have insulation and accompany hot facility, and superheater and preheater are BEU structure, and fused salt walks shell side, and water/steam walks tube side; Evaporimeter is BKU structure, and fused salt walks tube side, and water/steam walks shell side.
Described electric boiler is autoclave structure, and isothermal holding is made in outside, and its liquid level is consistent with evaporimeter, more than liquid level leaves certain gas-phase space.
Described startup heater is shell-and-tube heat exchanger, and isothermal holding is made in outside, and its shell-side fluid is saturated vapor/condensed water, and tube side fluid is feedwater.
The described blender in the future high-temperature molten salt of Self-heating pot and the low-temperature molten salt of next self cooling tank mixes, and obtains the fused salt mixt of different temperatures by the flow controlling different fused salt.
A kind of high-temperature molten salt steam generation that the utility model provides and pre-heating system, beneficial effect is:
Produced hot water and steam by electric boiler pass into fused salt in steam generating system before and preheating is carried out to fused salt heat exchanging equipment (superheater, evaporimeter and preheater), making its temperature reach more than fused salt freezing point, avoiding fused salt frozen block accident occurs when driving.On the other hand, when driving, first progressively improving steam generating system entrance temperature of molten salt to setting value by blender, avoiding fused salt heat exchanging device temperature to raise too fast, producing larger thermal stress.The utility model can avoid fused salt heat exchanging equipment frozen block accident occurs when starting and produces larger thermal stress, improves the operation stability of equipment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, cold tank; 2, hot tank; 3, electric furnace; 4, the first pump for liquid salts; 5, the second pump for liquid salts; 6 the 3rd pump for liquid salts; 7, blender; 8, superheater; 9, evaporimeter; 10, preheater; 11, heater is started; 12, electric boiler; 13, water pump; 14, valve A; 15, valve B; 16, valve C; 17, valve D; 18, valve E; 19, valve F; 20 valve G; A, feed-water intake; B, superheated steam export; C, condensation-water drain.
Detailed description of the invention
The technological means realized to make the utility model, creation characteristic, reach object and effect is easy to understand, below in conjunction with specific embodiments and the drawings, further elaboration the utility model, but following embodiment is only preferred embodiment of the present utility model, and not all.Based on the embodiment in embodiment, those skilled in the art under the prerequisite not making creative work obtain other embodiment, all belong to the protection domain of this patent.
As shown in Figure 1, a kind of high-temperature molten salt steam generation and pre-heating system, comprise cold tank 1, hot tank 2, electric furnace 3, three pump for liquid salts (4,5,6), blender 7, superheater 8, evaporimeter 9, preheater 10, start heater 11, electric boiler 12, water pump 13 and multiple valve (14 ~ 20), three pump for liquid salts (4,5,6) are submerged pump, two pump for liquid salts are wherein had to be installed on cold tank top, be respectively the first pump for liquid salts 4 and the second pump for liquid salts 5, a pump for liquid salts is installed on hot tank top, is the 3rd pump for liquid salts 6; First pump for liquid salts 4, electric furnace 3 and hot tank 2 are connected formation fused salt flow channel successively; 3rd pump for liquid salts 6, blender 7, superheater 8, evaporimeter 9, preheater 10 and cold tank 1 are connected successively and are formed another article of fused salt flow channel, and blender 7 is also connected with the second pump for liquid salts 5 by valve G20; Start heater 11, valve B15, preheater 10, evaporimeter 9, valve C16 and superheater 8 to connect successively formation water/steam flow channel, evaporimeter 9 is also connected by valve D17 with startup heater 11, start on heater 11 and be provided with feed-water intake a and condensation-water drain c, superheater 8 is provided with superheated steam outlet b; Evaporimeter 9, valve F19, electric boiler 12, water pump 13, valve A14 and preheater 10 are connected formation water-flow circuit successively, and evaporimeter 9 is also communicated with by valve E18 with the top of electric boiler 12.
High-temperature molten salt steam generation of the present utility model and pre-heating system, have heat accumulation, preheating and heat release three kinds of mode of operations.During heat accumulation, the low-temperature molten salt of 290 DEG C in cold tank 1 is transported in electric furnace 3 and heats by the first pump for liquid salts 4, and the high-temperature molten salt obtaining 565 DEG C after heating flows into hot tank 2 and stores.Before heat release, in steam generating system, there is fused salt frozen block and produce larger thermal stress, first should carry out preheating to superheater 8, evaporimeter 9 and preheater 10 3 fused salt equipment.Preheating flow process is:
1) valve-off A14, valve C16 and valve D17, opens valve B15, valve E18 and valve F19;
2) feedwater flows into from feed-water intake a, and after the water level in evaporimeter 9 and electric boiler 12 reach a certain height, valve-off B15, opens valve A14;
3) start water pump 13 and electric boiler 12, the enclosure space Inner eycle that water is formed at electric boiler 12, water pump 13, preheater 10 and evaporimeter 9 heats until water temperature reaches 290 DEG C;
4) start the electric tracer heating system of superheater 8 and preheater 10, make its case temperature reach 290 DEG C;
5) valve B15 and valve D17 is opened, feedwater is heated by starting heater 11 with the saturated vapor exported in evaporimeter 9, control the confluent flowed into from feed-water intake a, ensure the inlet water temperature of preheater 10 more than 230 DEG C (higher than fused salt fusing point, avoid fused salt frozen block occurs), the condensed water formed after saturated vapor is cooled flows out from condensation-water drain c;
6) open valve C16, by the steam exported in evaporimeter 9, preheating is carried out, until overheated steam pipe channel temp reaches 290 DEG C to the tube bank of superheater 8 and the superheat steam pipeline that is attached thereto;
7) fused salt steam generating system warm terminates, valve-off A14, valve B15, valve E18 and valve F19, closes electric boiler 12 and water pump 13.
After preheating completes, can enter Heat release mode, heat release flow process is:
1) valve B15 and valve G20 is opened, start the second pump for liquid salts 5 and the 3rd pump for liquid salts 6,565 DEG C of high-temperature molten salts and 290 DEG C of low-temperature molten salts are fully mixed in blender 7, adjust the rotating speed of the second pump for liquid salts 5 and the 3rd pump for liquid salts 6, the temperature of molten salt flowing into superheater 8 from blender 7 is made slowly to be warmed up to 565 DEG C from 290 DEG C, heating rate is 250 DEG C/h, avoids directly 565 DEG C of high-temperature molten salts being sent into steam generating system and causing producing larger thermal stress in heat transmission equipment;
2) valve-off G20 and the second pump for liquid salts 5, regulates the 3rd pump for liquid salts 6 to rated speed, regulates feedwater flow to design load;
3) fused salt steam generating system enters normal operating conditions, the external heat release of system stability, feeds water from feed-water intake a and constantly flows into, and superheated steam constantly exports from superheated steam outlet b, and condensed water continuously outflows from condensation-water drain c.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description is only preference of the present utility model; be not used for limiting the utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a high-temperature molten salt steam generation and pre-heating system, it is characterized in that: comprise cold tank, hot tank, electric furnace, three pump for liquid salts, blender, superheater, evaporimeter, preheater, startup heater, electric boiler, water pump and multiple valves, three pump for liquid salts are submerged pump, two pump for liquid salts are wherein had to be installed on cold tank top, be respectively the first pump for liquid salts and the second pump for liquid salts, a pump for liquid salts is installed on hot tank top, is the 3rd pump for liquid salts; First pump for liquid salts, electric furnace and hot tank are connected formation fused salt flow channel successively; 3rd pump for liquid salts, blender, superheater, evaporimeter, preheater and cold tank are connected successively and are formed another article of fused salt flow channel, and blender is also connected with the second pump for liquid salts by valve G; Start heater, valve B, preheater, evaporimeter, valve C and superheater to connect successively formation water/steam flow channel, evaporimeter is also connected by valve D with startup heater, start on heater and be provided with feed-water intake and condensation-water drain, superheater is provided with superheated steam outlet; Evaporimeter, valve F, electric boiler, water pump, valve A and preheater are connected formation water-flow circuit successively, and evaporimeter is also communicated with by valve E with the top of electric boiler.
2. high-temperature molten salt steam generation and pre-heating system according to claim 1, it is characterized in that: described superheater, evaporimeter and preheater are the shell-and-tube fused salt-water/vapor heat exchanger of TEMA standard, and all have insulation and accompany hot facility, superheater and preheater are BEU structure, and fused salt walks shell side, water/steam walks tube side; Evaporimeter is BKU structure, and fused salt walks tube side, and water/steam walks shell side.
3. high-temperature molten salt steam generation and pre-heating system according to claim 1, it is characterized in that: described electric boiler is autoclave structure, and isothermal holding is made in outside, its liquid level is consistent with evaporimeter, more than liquid level leaves certain gas-phase space.
4. high-temperature molten salt steam generation and pre-heating system according to claim 1, it is characterized in that: described startup heater is shell-and-tube heat exchanger, and isothermal holding is made in outside, its shell-side fluid is saturated vapor/condensed water, and tube side fluid is feedwater.
5. high-temperature molten salt steam generation and pre-heating system according to claim 1, it is characterized in that: the described blender in the future high-temperature molten salt of Self-heating pot and the low-temperature molten salt of next self cooling tank mixes, and obtains the fused salt mixt of different temperatures by the flow controlling different fused salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420453678.0U CN204042829U (en) | 2014-08-12 | 2014-08-12 | High-temperature molten salt steam generation and pre-heating system |
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|---|---|---|---|
| CN201420453678.0U CN204042829U (en) | 2014-08-12 | 2014-08-12 | High-temperature molten salt steam generation and pre-heating system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371260A (en) * | 2015-12-10 | 2016-03-02 | 南京华电节能环保设备有限公司 | Heat source intermittent input and steam continuous output afterheat boiler system |
| CN105387621A (en) * | 2015-12-18 | 2016-03-09 | 九格能源科技（天津）有限公司 | System for preheating fused salt pipeline through nitrogen |
| CN106439769A (en) * | 2016-09-07 | 2017-02-22 | 华中科技大学 | Flow control method for heating heated fluid in stages by adopting heat exchange system |
| CN107062183A (en) * | 2017-06-12 | 2017-08-18 | 黄善清 | A kind of single tank fused salt Heat storage type electric steam boilers |
| CN108007247A (en) * | 2018-01-17 | 2018-05-08 | 东方电气集团东方锅炉股份有限公司 | A kind of external heated type fused salt heat reservoir |
| CN108224779A (en) * | 2018-03-18 | 2018-06-29 | 唐山山岛石油化学有限公司 | High condensation point heat carrier heat exchange pipe network device and application method |
| CN108458329A (en) * | 2018-03-20 | 2018-08-28 | 上海锅炉厂有限公司 | A kind of tower type solar photo-thermal steam generating system adjusted using sloppy heat salt |
| CN108534222A (en) * | 2018-06-05 | 2018-09-14 | 百吉瑞（天津）新能源有限公司 | A kind of molten salt energy-storage heating system with fused salt static mixer |
| CN108895428A (en) * | 2018-05-24 | 2018-11-27 | 哈尔滨锅炉厂有限责任公司 | Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving |
| CN114704815A (en) * | 2022-04-08 | 2022-07-05 | 西安热工研究院有限公司 | Vapor heat storage system |
| CN108224779B (en) * | 2018-03-18 | 2024-05-14 | 唐山亿效环保科技有限公司 | High-condensation-point heat carrier heat exchange pipe network device and use method |
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2014
- 2014-08-12 CN CN201420453678.0U patent/CN204042829U/en active Active
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105371260A (en) * | 2015-12-10 | 2016-03-02 | 南京华电节能环保设备有限公司 | Heat source intermittent input and steam continuous output afterheat boiler system |
| CN105387621A (en) * | 2015-12-18 | 2016-03-09 | 九格能源科技（天津）有限公司 | System for preheating fused salt pipeline through nitrogen |
| CN106439769A (en) * | 2016-09-07 | 2017-02-22 | 华中科技大学 | Flow control method for heating heated fluid in stages by adopting heat exchange system |
| CN106439769B (en) * | 2016-09-07 | 2018-05-18 | 华中科技大学 | It is a kind of using heat-exchange system to the flow control methods that are heated stage by stage by heating fluid |
| CN107062183A (en) * | 2017-06-12 | 2017-08-18 | 黄善清 | A kind of single tank fused salt Heat storage type electric steam boilers |
| CN108007247B (en) * | 2018-01-17 | 2023-06-23 | 东方电气集团东方锅炉股份有限公司 | External heating type molten salt heat storage system |
| CN108007247A (en) * | 2018-01-17 | 2018-05-08 | 东方电气集团东方锅炉股份有限公司 | A kind of external heated type fused salt heat reservoir |
| CN108224779A (en) * | 2018-03-18 | 2018-06-29 | 唐山山岛石油化学有限公司 | High condensation point heat carrier heat exchange pipe network device and application method |
| CN108224779B (en) * | 2018-03-18 | 2024-05-14 | 唐山亿效环保科技有限公司 | High-condensation-point heat carrier heat exchange pipe network device and use method |
| CN108458329A (en) * | 2018-03-20 | 2018-08-28 | 上海锅炉厂有限公司 | A kind of tower type solar photo-thermal steam generating system adjusted using sloppy heat salt |
| CN108895428A (en) * | 2018-05-24 | 2018-11-27 | 哈尔滨锅炉厂有限责任公司 | Fused salt tower type thermal generation evaporator system water supply water temperature lifting system and method for improving |
| CN108534222A (en) * | 2018-06-05 | 2018-09-14 | 百吉瑞（天津）新能源有限公司 | A kind of molten salt energy-storage heating system with fused salt static mixer |
| CN108534222B (en) * | 2018-06-05 | 2023-04-25 | 百吉瑞（天津）新能源有限公司 | Molten salt energy storage and heat supply system with molten salt static mixer |
| CN114704815A (en) * | 2022-04-08 | 2022-07-05 | 西安热工研究院有限公司 | Vapor heat storage system |
| CN114704815B (en) * | 2022-04-08 | 2023-11-07 | 西安热工研究院有限公司 | Steam heat storage system |
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