CN204312262U - A kind of solar energy assists the overheated heat power generating system of reheating - Google Patents
A kind of solar energy assists the overheated heat power generating system of reheating Download PDFInfo
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- CN204312262U CN204312262U CN201420735581.9U CN201420735581U CN204312262U CN 204312262 U CN204312262 U CN 204312262U CN 201420735581 U CN201420735581 U CN 201420735581U CN 204312262 U CN204312262 U CN 204312262U
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- solar energy
- heat
- superheater
- steam turbine
- condenser
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
Abstract
The utility model discloses a kind of solar energy and assist the overheated heat power generating system of reheating.It comprises boiler, flue gas superheater, solar energy superheater, solar energy reheater, smoke re-heater, steam turbine, generator, condenser, recycle pump; Boiler, flue gas superheater, solar energy superheater, steam turbine, condenser, condenser, boiler connect and compose loop in turn, the outlet of turbine low pressure cylinder entrance, solar energy reheater, smoke re-heater, steam turbine high-pressure cylinder connects and composes loop in turn, and steam turbine is connected with generator.The utility model is by utilizing solar heat-preservation heat exchanger as reheater and superheater, increase superheating surface and the hot side again of existing heat power generating system, realize solar energy to substitute the partial function of fire coal, reach the object of reduction of discharging and dilatation, the discharge of the economic utilization and existing power station that achieve solar energy reduces object.
Description
Technical field
The utility model relates to heat power generating system and heliotechnics, particularly relates to a kind of solar energy and assists the overheated heat power generating system of reheating.
Background technique
China's boiler is based on fire coal, and wherein coal-fired power station boiler is fast-developing to Large Copacity, high parameter direction in recent years, be no matter manufacture or operation management all close to Foreign Advanced Lerel; And coal-burned industrial boiler recoverable amount is large, distribution is wide, energy consumption is high, pollution is heavy, efficiency and Environmental capacity integral level have a certain distance compared with abroad, and energy-saving and emission-reduction have a high potential.By the end of the year 2012, China will be reaching 46.7 ten thousand with coal-burned industrial boiler, and total capacity reaches 1,780,000 and steams ton, and year consumes about 700,000,000 tons, raw coal, accounts for more than 18% of national coal consumption total amount.
Along with improving constantly of global environmental protection consciousness, deepening continuously of energy-saving and emission-reduction strategy, industrial discharge standard is more and more stricter.Large-scale coal fired power plant, by " near-zero release " technology, has realized to SO
x, NO
x, effective control of the pollution reductions such as dust.But along with the progressively enforcement of Global Emissions of Greenhouse Gas pact, traditional coal fired power plant still faces CO
2the challenge reduced discharging.
And even more noteworthy, " near-zero release " technology is only promoted in large power station at present, for the emission problem of 300MW and following coal unit, do not reach Natural gas standard at present.It is worthy of note, current China most of coal-burned industrial boiler capacity is less, separate unit average size be only 3.8 tons/time, wherein 2 tons/time following number of units accounting reach 66.5%, 10 tons/time below coal-burned industrial boiler mostly do not configure effective dust removal apparatus, substantially do not have desulphurization denitration facility, discharge exceeds standard serious, and its disposal of pollutants problems demand solves.It is solve the Main Means and method that current arcola disposal of pollutants takes that " upper large pressure little ", energy-saving boiler substitute existing poor efficiency boiler etc.
But because coal is a kind of full carbon back fossil fuel, existing technical thought still cannot realize CO
2effective minimizing of discharge.Even if adopt CO
2how absorption techniques, process the CO of recovery
2also be the significant challenge faced.Therefore, finally CO is realized
2reduction and system energy efficiency two kinds of approach can only be improved realize by new energy substitute technology.
Solar energy cleans the reproducible energy as one, and because its energy density is lower, cost of investment is higher, and Economy is that it develops the main resistance faced, but it is significant in the discharge of decreasing pollution thing.And meanwhile, carry out eliminating to existing small hydropower station and also face great wearing out of assets problem, how to utilize the system equipment of existing coal fired power plant, while up to standard to existing unit pollutant emission in conjunction with heliotechnics realization, improve the Economy of Solar use, have great importance.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of solar energy to assist the overheated heat power generating system of reheating.
For achieving the above object, the utility model is by the following technical solutions:
A kind of solar energy assists the overheated heat power generating system of reheating to comprise boiler, flue gas superheater, solar energy superheater, solar energy reheater, smoke re-heater, steam turbine, generator, condenser, recycle pump; Boiler, flue gas superheater, solar energy superheater, steam turbine, condenser, condenser, boiler connect and compose loop in turn, the outlet of turbine low pressure cylinder entrance, solar energy reheater, smoke re-heater, steam turbine high-pressure cylinder connects and composes loop in turn, and steam turbine is connected with generator.
Another kind of solar energy assists the overheated heat power generating system of reheating to comprise boiler, flue gas superheater, solar energy superheater, solar energy reheater, smoke re-heater, steam turbine, generator, condenser, recycle pump, superheat steam flow regulator, reheated steam flow regulator; Flue gas superheater is connected through steam turbine, condenser, recycle pump, boiler, superheat steam flow regulator one end in turn with one end after the parallel connection of solar energy superheater, the superheat steam flow regulator the other end is connected with the other end after the parallel connection of solar energy superheater with flue gas superheater, solar energy reheater and one end after smoke re-heater parallel connection to export with steam turbine high-pressure cylinder through reheated steam flow regulator and are connected, the other end exports with turbine low pressure cylinder and is connected, and steam turbine is connected with generator.
Described solar energy superheater and solar energy reheater adopt direct optically focused accumulation of heat or indirect optically focused accumulation of heat two kinds of structures; Direct optically focused accumulation of heat structure comprises overheated/reheating heat exchanging tube, heat storage medium body, heat-absorbing chamber and condenser field; Heat storage medium body interior is equipped with overheated/reheating heat exchanging tube, one end of heat storage medium body is provided with heat-absorbing chamber, condenser field by solar light focusing in heat-absorbing chamber; Indirect optically focused accumulation of heat structure comprises overheated/reheating replace tubes, heat storage medium body, heat-absorbing chamber and condenser field, accumulation of heat heating pipe, solar energy loop connecting tube; Heat storage medium body interior is equipped with respectively overheated/reheating heat exchanging tube and accumulation of heat heating pipe; Heat-absorbing chamber forms circulation loop by solar energy loop connecting tube and accumulation of heat heating pipe; Condenser field by solar light focusing in heat-absorbing chamber.Described solar energy superheater and solar energy reheater are 500 DEG C ~ 1300 DEG C high temperature solar thermal accumulator, and accumulation of heat working medium comprises high temperature lava and graphite.
The beneficial effect that the utility model compared with prior art has:
1) utilize solar heat-preservation heat exchanger as reheater and superheater, increase superheating surface and the hot side again of existing heat power generating system, realize the Some substitute to fire coal, reach the object of reduction of discharging;
2) native system is very little to the change of existing electric power station system, and, the increase of solar energy system does not cause new system run all right to the dependence of solar energy discontinuity, to ensure that solar energy makes full use of the same, also ensure that the independent operating of original system;
3) native system is by solar heat-preservation, as a separate unit, also can realize utilizing solar energy to realize the function of regulating system peak valley energy supply.
Accompanying drawing explanation
Fig. 1 (a) is that solar energy assists the overheated heat power generating system schematic diagram (series connection) of reheating;
Fig. 1 (b) is that solar energy assists the overheated heat power generating system schematic diagram (parallel connection) of reheating;
Fig. 2 (a) is direct optically focused heat-storage solar energy Superheater/Reheater schematic diagram;
Fig. 2 (b) is indirect optically focused heat-storage solar energy Superheater/Reheater schematic diagram;
In figure: boiler 1, flue gas superheater 2, solar energy superheater 3, solar energy reheater 4, smoke re-heater 5, steam turbine 6, generator 7, condenser 8, recycle pump 9, superheat steam flow regulator 10, reheated steam flow regulator 11, overheated/reheating heat exchanging tube 12, heat storage medium body 13, heat-absorbing chamber 14, condenser field 15, accumulation of heat heating pipe 16, solar energy loop connecting tube 17.
Embodiment
As shown in Fig. 1 (a), a kind of solar energy assists the overheated heat power generating system of reheating to comprise boiler 1, flue gas superheater 2, solar energy superheater 3, solar energy reheater 4, smoke re-heater 5, steam turbine 6, generator 7, condenser 8, recycle pump 9; Boiler 1, flue gas superheater 2, solar energy superheater 3, steam turbine 6, condenser 8, condenser 9, boiler 1 connect and compose loop in turn, the outlet of steam turbine 6 low pressure (LP) cylinder entrance, solar energy reheater 4, smoke re-heater 5, steam turbine 6 high-pressure cylinder connects and composes loop in turn, and steam turbine 6 is connected with generator 7.
As shown in Fig. 1 (b), another kind of solar energy assists the overheated heat power generating system of reheating to comprise boiler 1, flue gas superheater 2, solar energy superheater 3, solar energy reheater 4, smoke re-heater 5, steam turbine 6, generator 7, condenser 8, recycle pump 9, superheat steam flow regulator 10, reheated steam flow regulator 11; After flue gas superheater 2 is in parallel with solar energy superheater 3, one end is connected in turn through steam turbine 6, condenser 8, recycle pump 9, boiler 1, superheat steam flow regulator 10 one end, after superheat steam flow regulator 10 the other end is in parallel with solar energy superheater 3 with flue gas superheater 2, the other end is connected, after solar energy reheater 4 and smoke re-heater 5 are in parallel, one end to export with steam turbine 6 high-pressure cylinder through reheated steam flow regulator 11 and is connected, the other end exports with steam turbine 6 low pressure (LP) cylinder and is connected, and steam turbine 6 is connected with generator 7.
As shown in Fig. 2 (a), Fig. 2 (b), described solar energy superheater 3 and solar energy reheater 4 adopt direct optically focused accumulation of heat or indirect optically focused accumulation of heat two kinds of structures; Direct optically focused accumulation of heat structure comprises overheated/reheating heat exchanging tube 12, heat storage medium body 13, heat-absorbing chamber 14 and condenser field 15; Heat storage medium body 13 inside is equipped with overheated/reheating heat exchanging tube 12, one end of heat storage medium body 13 is provided with heat-absorbing chamber 14, condenser field 15 by solar light focusing in heat-absorbing chamber 14; Indirect optically focused accumulation of heat structure comprises overheated/reheating heat exchanging tube 12, heat storage medium body 13, heat-absorbing chamber 14 and condenser field 15, accumulation of heat heating pipe 16, solar energy loop connecting tube 17; Heat storage medium body 13 inside is equipped with respectively overheated/reheating heat exchanging tube 12 and accumulation of heat heating pipe 16; Heat-absorbing chamber 14 forms circulation loop by solar energy loop connecting tube 17 and accumulation of heat heating pipe 16; Condenser field 16 by solar light focusing in heat-absorbing chamber 14.Described solar energy superheater 3 and solar energy reheater 4 are 500 DEG C ~ 1300 DEG C high temperature solar thermal accumulator, and accumulation of heat working medium comprises high temperature lava and graphite.
Solar energy assists the reduction of discharging/expansion method of reheating/overheated heat power generating system to be: by the basis that finds system at existing heating power on flue gas superheater 2 and smoke re-heater 5 respectively serial or parallel connection be that the solar energy superheater 3 of thermal source and solar energy reheater 4 increase existing system superheating surface and hot side again with solar energy; By ensureing circular flow constant reduction boiler fired coal amount and ensureing Coal-fired capacity constant increase boiler circular flow, the heating power that the heat exchanger surface utilizing solar energy superheater 3 and solar energy reheater 4 to increase compensates owing to increasing boiler 2 and smoke re-heater 5 and flue gas superheater 2 in flow and the coal-fired original system circulation caused of reduction is uneven, ensures that the steam parameter that superheater and reheater export reaches original design object value; Under series connection condition, all more original parameter of outlet parameter of boiler 2 and smoke re-heater 5 and flue gas superheater 2 reduces, and by series-connected solar superheater 3, solar energy reheater 4, is heated to design object parameter; Under condition in parallel, boiler 2 outlet parameter reduces, the flow of smoke re-heater 5 and flue gas superheater 2 is reduced by superheat steam flow regulator 10 and reheated steam flow regulator 11, ensured the heating of residual steam by solar energy superheater 3 in parallel, solar energy reheater 4, make outlet vapor parameter reach designing requirement; Final realization reaches by reducing Coal-fired capacity while ensureing system power the object reduced discharging with increasing systemic circulation flow raising system total power under identical coal consumption condition.
Solar energy assists the implementation process of the overheated heat power generating system of reheating as follows: by installing condenser mirror at existing power station periphery, realize carrying out high power concentrator accumulation of heat to solar energy superheater and solar energy reheater, ensureing under the prerequisite that electric power station system power is constant, reduce the Coal-fired capacity of boiler, suitably adjust boiler circular flow simultaneously, namely the heat that boiler burning produces reduces, the steam grade of boiler export is caused to decrease, also cause the high-temperature flue gas flow of boiler superheater and reheater to reduce simultaneously, now by serial or parallel connection solar energy superheater on original superheater, ensure that the parameter of turbine inlet steam reaches design object, on original superheater, series connection or direct solar energy reheater in parallel increase the heat flow again of existing steam turbine set simultaneously, compensate because boiler circular flow reduces the power reduction that brings, that is namely brought because fire coal reduces by solar energy superheater and reheater supplies thermal unbalance, finally ensure that the output power of whole thermodynamic system.Due to the minimizing of Coal-fired capacity, thus inherently achieve the reduction of effulent.
When Coal-fired capacity is constant be, because solar energy superheater and solar energy reheater provide more heat exchanger surface and heat exchange amount, therefore, the flow of steam generator system can be improved accordingly, to meet the thermal balance of system, finally achieve the increase of the output power of system, and, consider that existing steam turbine set all has larger surplus in design, therefore, the heat increased can realize generating by existing steam turbine set completely, finally reaches the object of dilatation.
Under condition in parallel, according to the solar energy resources feature near the heat storage capacity of solar energy superheater and solar energy reheater and power station, by steam regulation flow control valve, in normal electricity consumption situation, solar energy superheater and the only accumulation of heat of solar energy reheater, when peak of power consumption, improve the power of system by solar energy superheater and solar energy reheater instead of pass through to increase boiler load, thus ensure that the steady of boiler load, achieve the object of peak valley energy supply.
The utility model passes through solar heat-preservation heat exchanger as reheater and superheater, increase superheating surface and the hot side again of existing heat power generating system, realize solar energy to substitute the partial function of fire coal, reach the object of reduction of discharging and dilatation, the discharge of the economic utilization and existing power station that achieve solar energy reduces object.
Claims (4)
1. solar energy assists the overheated heat power generating system of reheating, it is characterized in that comprising boiler (1), flue gas superheater (2), solar energy superheater (3), solar energy reheater (4), smoke re-heater (5), steam turbine (6), generator (7), condenser (8), recycle pump (9); Boiler (1), flue gas superheater (2), solar energy superheater (3), steam turbine (6), condenser (8), condenser (9), boiler (1) connect and compose loop in turn, the outlet of steam turbine (6) low pressure (LP) cylinder entrance, solar energy reheater (4), smoke re-heater (5), steam turbine (6) high-pressure cylinder connects and composes loop in turn, and steam turbine (6) is connected with generator (7).
2. solar energy assists the overheated heat power generating system of reheating, it is characterized in that comprising boiler (1), flue gas superheater (2), solar energy superheater (3), solar energy reheater (4), smoke re-heater (5), steam turbine (6), generator (7), condenser (8), recycle pump (9), superheat steam flow regulator (10), reheated steam flow regulator (11), after flue gas superheater (2) is in parallel with solar energy superheater (3), one end is through steam turbine (6), condenser (8), recycle pump (9), boiler (1), superheat steam flow regulator (10) one end is connected in turn, after superheat steam flow regulator (10) the other end is in parallel with solar energy superheater (3) with flue gas superheater (2), the other end is connected, after solar energy reheater (4) and smoke re-heater (5) are in parallel, one end to export with steam turbine (6) high-pressure cylinder through reheated steam flow regulator (11) and is connected, the other end is connected with steam turbine (6) low pressure (LP) cylinder entrance, steam turbine (6) is connected with generator (7).
3. solar energy according to claim 1 assists the overheated heat power generating system of reheating, it is characterized in that described solar energy superheater (3) and solar energy reheater (4) adopt direct optically focused accumulation of heat or indirect optically focused accumulation of heat two kinds of structures; Direct optically focused accumulation of heat structure comprises overheated/reheating heat exchanging tube (12), heat storage medium body (13), heat-absorbing chamber (14) and condenser field (15); Heat storage medium body (13) inside is equipped with overheated/reheating heat exchanging tube (12), one end of heat storage medium body (13) is provided with heat-absorbing chamber (14), condenser field (15) by solar light focusing in heat-absorbing chamber (14); Indirect optically focused accumulation of heat structure comprises overheated/reheating heat exchanging tube (12), heat storage medium body (13), heat-absorbing chamber (14) and condenser field (15), accumulation of heat heating pipe (16), solar energy loop connecting tube (17); Heat storage medium body (13) inside is equipped with respectively overheated/reheating heat exchanging tube (12) and accumulation of heat heating pipe (16); Heat-absorbing chamber (14) forms circulation loop by solar energy loop connecting tube (17) and accumulation of heat heating pipe (16); Condenser field (16) by solar light focusing in heat-absorbing chamber (14).
4. solar energy according to claim 1 assists the overheated heat power generating system of reheating, it is characterized in that described solar energy superheater (3) and solar energy reheater (4) are 500 DEG C ~ 1300 DEG C high temperature solar thermal accumulator, accumulation of heat working medium comprises high temperature lava and graphite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420735581.9U CN204312262U (en) | 2014-12-01 | 2014-12-01 | A kind of solar energy assists the overheated heat power generating system of reheating |
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| CN201420735581.9U CN204312262U (en) | 2014-12-01 | 2014-12-01 | A kind of solar energy assists the overheated heat power generating system of reheating |
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| CN204312262U true CN204312262U (en) | 2015-05-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454409A (en) * | 2014-12-01 | 2015-03-25 | 浙江大学 | Solar-assisted reheat overheating thermal power generation system and emission reduction dilatation method |
| CN106438236A (en) * | 2015-08-12 | 2017-02-22 | 钟世友 | Power device acting through natural heat energy |
| CN107842400A (en) * | 2017-10-19 | 2018-03-27 | 华中科技大学 | A kind of solar energy cooperates with Turbo-generator Set double reheat system |
-
2014
- 2014-12-01 CN CN201420735581.9U patent/CN204312262U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454409A (en) * | 2014-12-01 | 2015-03-25 | 浙江大学 | Solar-assisted reheat overheating thermal power generation system and emission reduction dilatation method |
| CN104454409B (en) * | 2014-12-01 | 2018-04-27 | 浙江大学 | A kind of solar energy auxiliary reheating overheat heat power generating system and emission reduction expansion method |
| CN106438236A (en) * | 2015-08-12 | 2017-02-22 | 钟世友 | Power device acting through natural heat energy |
| CN107842400A (en) * | 2017-10-19 | 2018-03-27 | 华中科技大学 | A kind of solar energy cooperates with Turbo-generator Set double reheat system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150506 Effective date of abandoning: 20180427 |
|
| AV01 | Patent right actively abandoned |