CN105332865A - Tower type solar energy and coal-fired boiler photo-thermal cogeneration system - Google Patents
Tower type solar energy and coal-fired boiler photo-thermal cogeneration system Download PDFInfo
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- CN105332865A CN105332865A CN201410382170.0A CN201410382170A CN105332865A CN 105332865 A CN105332865 A CN 105332865A CN 201410382170 A CN201410382170 A CN 201410382170A CN 105332865 A CN105332865 A CN 105332865A
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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 invention discloses a tower type solar energy and coal-fired boiler photo-thermal cogeneration system, and relates to the field of tower type solar energy photo-thermal cogeneration. The system is used for achieving photo-thermal cogeneration of tower type solar energy and a coal-fired boiler. The system comprises the coal-fired boiler, a tower type solar energy heat collector and a high-pressure cylinder. A water inlet of the coal-fired boiler and an inlet of the tower type solar energy heat collector are both connected with a water outlet of a high-pressure heater, and a boiler overheating steam outlet of the coal-fired boiler and a tower type solar energy heat collector overheating steam outlet of the tower type solar energy heat collector are both connected with an inlet of the high-pressure cylinder. According to the technical scheme, photo-thermal cogeneration of the tower type solar energy and the coal-fired boiler is achieved.
Description
Technical field
The present invention relates to tower type solar photothermal cogeneration field, be specifically related to a kind of tower type solar and coal fired boiler photothermal cogeneration system.
Background technique
In more than ten years in the past, the utilization of solar energy mainly concentrates on field of photovoltaic power generation.In recent years, solar light-heat power-generation technology obtains significant progress, but is mainly trough system, few to the technical research of tower type solar photothermal power generation.But tower type solar photothermal power generation has the advantage of oneself uniqueness, the steam quality of generation is higher.Therefore, strengthen the research of tower type solar photothermal power generation technology significant.
Because tower type solar photothermal power generation is subject to illumination intensity and regional restriction, adopt separately tower type solar photothermal power generation technology can not meet our daily demand.
Summary of the invention
One of them object of the present invention proposes a kind of tower type solar and coal fired boiler photothermal cogeneration system, in order to realize the photothermal cogeneration of tower type solar and coal fired boiler.
For achieving the above object, the invention provides following technological scheme:
The invention provides a kind of tower type solar and coal fired boiler photothermal cogeneration system, wherein, comprise tower type solar heat collector, coal fired boiler, steam turbine;
The water intake of described coal fired boiler and the entrance of described tower type solar heat collector are all connected with water inlet, and the boiler overheating steam outlet of described coal fired boiler is all connected with the high-pressure cylinder entrance of described steam turbine with the tower type solar heat collector superheated vapor outlet of described tower type solar heat collector.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, also comprise suction booster and high-pressure heater;
The water intake of described coal fired boiler is all connected with the water outlet of described high-pressure heater with the entrance of described tower type solar heat collector;
Described suction booster is arranged between the water outlet of described high-pressure heater and the entrance of described tower type solar heat collector.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, also comprise vapour vapour heat exchanger;
Described vapour vapour heat exchanger has superheated vapor import, exhaust steam entrance, exhaust steam pipe outlet and unsaturated water outlet, the superheated vapor import of described vapour vapour heat exchanger and the unsaturated water outlet of described vapour vapour heat exchanger, the exhaust steam entrance of described vapour vapour heat exchanger is communicated with the exhaust steam pipe outlet of described vapour vapour heat exchanger;
The superheated vapor import of described vapour vapour heat exchanger exports with the tower type solar heat collector superheated vapor of described tower type solar heat collector and is connected, and the unsaturated water outlet of described vapour vapour heat exchanger is connected with the entrance of described suction booster; The described exhaust steam entrance of vapour vapour heat exchanger exports with the high-pressure cylinder of described steam turbine and is connected, and the exhaust steam pipe outlet of described vapour vapour heat exchanger is connected with the vapor inlet port of described coal fired boiler.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, described vapour vapour heat exchanger comprises outer cover of heat exchanger and exhaust steam pipeline;
One end of described outer cover of heat exchanger offers superheated vapor import, and the other end of described outer cover of heat exchanger offers unsaturated water outlet;
Described exhaust steam pipeline is through the inside of described outer cover of heat exchanger.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, described outer cover of heat exchanger inside is provided with dividing plate, and the quantity of described dividing plate is at least one piece;
Described dividing plate is arranged between described superheated vapor import and the outlet of described unsaturated water, and described dividing plate is used for being formed with circulation passage between described superheated vapor import and the outlet of described unsaturated water;
Wherein, the circulation passage directly formed between described superheated vapor import and the outlet of described unsaturated water is shorter than the circulation passage formed via described dividing plate between described superheated vapor import and the outlet of described unsaturated water.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, described dividing plate is platy structure, and described dividing plate is crossing with described exhaust steam pipeline, described dividing plate is provided with the through hole for making described exhaust steam pipeline pass.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, described dividing plate is at least two pieces, and each described dividing plate be arranged in parallel;
In two pieces of adjacent described dividing plates, wherein one piece of described outer cover of heat exchanger inwall near described superheated vapor import side is arranged, and there is space between this dividing plate and the described outer cover of heat exchanger inwall exporting side near described unsaturated water; Another block is arranged near the described outer cover of heat exchanger inwall of described unsaturated water outlet side, and there is space between the described outer cover of heat exchanger inwall of this dividing plate and close described superheated vapor import side.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, also comprise water tank;
Described water tank is arranged between the unsaturated water outlet of described vapour vapour heat exchanger and the entrance of described suction booster.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, also comprise circulating water pump;
Described circulating water pump is arranged between the entrance of described water tank and described suction booster.
Tower type solar as above and coal fired boiler photothermal cogeneration system, preferably, described coal fired boiler also has reheated steam outlet, and described reheated steam outlet is connected with the intermediate pressure cylinder of described steam turbine and the entrance of low pressure (LP) cylinder;
The high-pressure cylinder outlet of described steam turbine is connected with the vapor inlet port of described coal fired boiler.
Based on technique scheme, the embodiment of the present invention at least can produce following technique effect:
Technique scheme, exported by the boiler overheating steam of coal fired boiler, the outlet of the tower type solar heat collector superheated vapor of tower type solar heat collector is all connected with the entrance of described high-pressure cylinder, superheated vapor does work together in high-pressure cylinder.Technique scheme, combines solar energy with conventional coal-fired power plant, utilizes the advantage that fired power generating unit adjustment range is large, saves the regenerative system in solar light-heat power-generation and turbine system, reaches the object reducing cost of electricity-generating, realize continuous and stable electric generation.Meanwhile, compared with other renewable energy sourcess, solar light-heat power-generation system take hotwork as the carrier of intermediate energy, makes it to be coupled relatively easily by heat and coal generating system.In addition, the peak value of solar radiation is on summer and daytime, just in time corresponding with the peak value of electricity consumption, thus effectively can reduce the pressure of peak load regulation network.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
The principle schematic of the tower type solar that Fig. 1 provides for the embodiment of the present invention one and coal fired boiler photothermal cogeneration system;
The principle schematic of the tower type solar that Fig. 2 provides for the embodiment of the present invention two and coal fired boiler photothermal cogeneration system;
The schematic diagram of vapour vapour heat exchanger applications in tower type solar and coal fired boiler photothermal cogeneration system that Fig. 3 provides for the embodiment of the present invention three;
Fig. 4 is the cross-sectional schematic of vapour vapour heat exchanger in the embodiment of the present invention three;
Fig. 5 is Fig. 4 left view;
Fig. 6 is that the A-A of Fig. 4 is to cross-sectional schematic;
Fig. 7 is that the B-B of Fig. 4 is to cross-sectional schematic;
Fig. 8 is the schematic diagram of Fig. 4 central diaphragm;
Reference character:
1, final stage is high adds outlet 2, coal fired boiler feedwater; 3, solar thermal collector feedwater along separate routes;
Feedwater;
4, coal fired boiler; 5, suction booster; 7, solar energy superheated vapor;
6, tower type solar collection 9, high-pressure cylinder exhaust steam; 10, coal fired boiler superheated vapor;
Hot device;
8, high-pressure cylinder; 11, vapour vapour heat exchanger; 13, vapour vapour heat exchanger exit exhaust steam;
12, water tank; 16, circulating water pump; 15, solar thermal collector feedwater;
20, superheated vapor; 18, tower type solar superheated vapor acting part;
17, unsaturated water; 19, tower type solar superheated vapor vapour vapour heat exchanger section;
21, outer cover of heat exchanger; 22, exhaust steam pipeline; 23, superheated vapor import;
25, dividing plate; 24, unsaturated water outlet; 26, through hole;
27, total exhaust steam; 28, vapour vapour heat exchanger high-voltage cylinder exhaust steam import;
29, vapour vapour heat exchanger high-voltage cylinder exhaust steam outlet.
Embodiment
Below in conjunction with the elaboration that Fig. 1 ~ Fig. 8 carries out specifically to technological scheme provided by the invention, arbitrary technological means provided by the invention is carried out replace or all should within protection scope of the present invention by the technological scheme that two or more technological means or technical characteristics carry out mutually combining and obtain provided by the invention arbitrarily.
Embodiment one
See Fig. 1, the embodiment of the present invention provides a kind of tower type solar and coal fired boiler photothermal cogeneration system to comprise coal fired boiler 4, tower type solar heat collector 6 and high-pressure cylinder 8.The water intake of coal fired boiler 4 and the entrance of tower type solar heat collector 6 are all connected with water inlet, specifically be connected with the water outlet of high-pressure heater, the boiler overheating steam outlet of coal fired boiler 4 is all connected with the entrance of the high-pressure cylinder 8 of steam turbine with the tower type solar heat collector superheated vapor outlet of tower type solar heat collector 6 herein.
Above-mentioned tower type solar and coal fired boiler photothermal cogeneration system, adopt the section components in traditional coal-burning boiler system and the section components in tower type solar solar-thermal generating system to combine, to realize photothermal cogeneration.Coal-burning boiler system is primarily of structure compositions such as coal fired boiler 4, steam turbine, and wherein: the coal fired boiler 4 in coal-burning boiler system is common boiler, steam turbine is common back pressure turbine.Tower type solar heat collector 6 plays the effect that heating of being fed water by tower type solar heat collector 6 becomes tower type solar superheated vapor.
See Fig. 1, be divided into two-part from the high feedwater 1 adding outlet of final stage, a part enters coal fired boiler 4, and another part enters tower type solar heat collector 6, enters after specifically caning be passed through suction booster 5 supercharging again.Feedwater heat absorption in coal fired boiler 4 and tower type solar heat collector 6 becomes superheated vapor, together enters high-pressure cylinder 8 and do work after the superheated vapor mixing that the superheated vapor that coal fired boiler 4 produces and tower type solar heat collector 6 produce.Arrow in Fig. 1 illustrates the flow direction of gas and water in photothermal cogeneration process.
Technique scheme, the tower type solar heat collector superheated vapor outlet of the outlet of the boiler overheating steam of coal fired boiler 4, tower type solar heat collector 6 be all connected with the entrance of high-pressure cylinder 8, superheated vapor does work together in high-pressure cylinder 8.Technique scheme, combines solar energy with conventional coal-fired power plant, utilizes the advantage that fired power generating unit adjustment range is large, saves the regenerative system in solar light-heat power-generation and turbine system, reaches the object reducing cost of electricity-generating, realize continuous and stable electric generation.Meanwhile, compared with other renewable energy sourcess, solar light-heat power-generation system take hotwork as the carrier of intermediate energy, makes it to be coupled relatively easily by heat and coal generating system.In addition, the peak value of solar radiation is on summer and daytime, just in time corresponding with the peak value of electricity consumption, thus effectively can reduce the pressure of peak load regulation network.
Further, coal fired boiler 4 also has reheated steam outlet, and reheated steam outlet is connected with the intermediate pressure cylinder of steam turbine and the entrance of low pressure (LP) cylinder.The outlet of the high-pressure cylinder 8 of steam turbine is connected with the vapor inlet port of coal fired boiler 4.
The steam finishing merit at high-pressure cylinder 8 again enters coal fired boiler 4 and absorbs heat, and becomes after reheated steam again by intermediate pressure cylinder and low pressure (LP) cylinder acting.
Further, tower type solar and coal fired boiler photothermal cogeneration system also comprise suction booster 5 and high-pressure heater.The water intake of coal fired boiler 4 is all connected with the water outlet of high-pressure heater with the entrance of tower type solar heat collector 6.Suction booster 5 is arranged between the water outlet of high-pressure heater and the entrance of tower type solar heat collector 6.Suction booster 5 mainly plays the effect into solar thermal collector shunt feedwater 3 superchargings.
As shown in Figure 1, the feedwater 3 along separate routes of coal fired boiler feedwater 2 and solar thermal collector is divided into from the high feedwater 1 added of final stage; Coal fired boiler feedwater 2 heat absorption in coal fired boiler 4 becomes coal fired boiler superheated vapor 10; Solar thermal collector along separate routes feedwater 3 absorbs heat towards tower type solar heat collector 6 after suction booster 5 pressurizes, and becomes solar energy superheated vapor 7 afterwards; Lead to high-pressure cylinder 8 after solar energy superheated vapor 7 and coal fired boiler superheated vapor 10 mix to do work; The high-pressure cylinder exhaust steam 9 finishing merit in high-pressure cylinder 8 enters after coal fired boiler 4 heat absorption becomes reheated steam again, continues to lead to intermediate pressure cylinder and low pressure (LP) cylinder acting.
Embodiment two
See Fig. 2, the embodiment of the present invention is on the technological scheme basis of above-described embodiment, and further, tower type solar and coal fired boiler photothermal cogeneration system also comprise vapour vapour heat exchanger 11; Vapour vapour heat exchanger 11 has superheated vapor import C, exhaust steam entrance D, exhaust steam pipe outlet E and unsaturated water outlet F, the superheated vapor import C of vapour vapour the heat exchanger 11 and unsaturated water outlet F of vapour vapour heat exchanger 11, the exhaust steam entrance D of vapour vapour heat exchanger 11 is communicated with the exhaust steam pipe outlet E of vapour vapour heat exchanger 11.The superheated vapor import C of vapour vapour heat exchanger 11 also exports with the tower type solar heat collector superheated vapor of tower type solar heat collector 6 and is connected, and the unsaturated water outlet F of vapour vapour heat exchanger 11 is connected with the entrance of suction booster 5; The exhaust steam entrance D of vapour vapour heat exchanger 11 is connected with the outlet of high-pressure cylinder 8, and the exhaust steam pipe outlet E of vapour vapour heat exchanger 11 is connected with the vapor inlet port of coal fired boiler 4.
Acting as of vapour vapour heat exchanger 11: by the exchange heat of the exhaust steam that exported by high-pressure cylinder 8 and part tower type solar superheated vapor, with the exhaust steam temperature rising making part tower type solar superheated vapor become unsaturated water, the outlet of coal fired boiler 4 high-pressure cylinder 8, Q factor improves.
See Fig. 2, tower type solar and coal fired boiler photothermal cogeneration system also comprise water tank 12; Water tank 12 is arranged between the unsaturated water outlet of vapour vapour heat exchanger 11 and the entrance of suction booster 5.Water tank 12 plays the effect storing circulating water.
See Fig. 2, tower type solar and coal fired boiler photothermal cogeneration system also comprise circulating water pump 16; Circulating water pump 16 is arranged between the entrance of water tank 12 and suction booster 5.Circulating water pump 16 plays the effect of being pressurizeed by circulating water.
See Fig. 2, coal fired boiler feedwater 2, tower type solar tower type solar heat collector feedwater 3 two-part are along separate routes divided into from the high feedwater 1 adding outlet of final stage, a part enters coal fired boiler 4, after another part and unsaturated water 17 mix, after suction booster 5 supercharging, enters tower type solar heat collector 6.
Coal fired boiler feedwater 2 heat absorption in coal fired boiler 4 becomes coal fired boiler superheated vapor 10, and solar thermal collector feedwater 15 heat absorption in tower type solar heat collector 6 becomes tower type solar superheated vapor.
Tower type solar superheated vapor is divided into tower type solar superheated vapor acting part 18 and tower type solar superheated vapor vapour vapour heat exchanger section 19 two-part, enter high-pressure cylinder 8 as superheated vapor 20 after a part and coal fired boiler superheated vapor 10 mix to do work, another part enters vapour vapour heat exchanger 11.
The exhaust steam finishing merit at high-pressure cylinder 8 enters vapour vapour heat exchanger 11, becomes the exhaust steam 13 of vapour vapour heat exchanger exit and continue to lead to coal fired boiler 4 in vapour vapour heat exchanger 11 after heat absorption.
Tower type solar superheated vapor vapour vapour heat exchanger section 19 becomes unsaturated water after heat release in vapour vapour heat exchanger 11, after the enrichment of water tank 12, via circulating water pump 16 supercharging, again returns suction booster 5 import.
Technique scheme, overcomes the shortcoming of tower type solar steam quality deficiency; Overcome coal-burning power plant CO
2the shortcoming that output is too high; Overcome the with serious pollution shortcoming in coal-burning power plant; Overcome single solar power station to need to set up regenerative system and the too high problem of cost; Overcome the problem that peak load regulation network pressure is large; Improve unit efficiency, save fire coal; Take full advantage of the solar energy resources of China's abundance.
Embodiment three
See Fig. 3-Fig. 8, in the present embodiment, the unsaturated water of the vapour vapour heat exchanger 11 of tower type solar and coal fired boiler photothermal cogeneration system exports 24 direct circulations and flows to suction booster 5.The outlet exhaust steam of the high-pressure cylinder 8 of steam turbine is divided into two-part, a part enters into vapour vapour heat exchanger 11 via vapour vapour heat exchanger high-voltage cylinder exhaust steam import 28 (i.e. exhaust steam entrance D) and heats, and then exports 29 (i.e. exhaust steam pipe outlet E) by the exhaust steam of vapour vapour heat exchanger high-voltage cylinder and exports; Another part exhaust steam without heating, directly and the above-mentioned exhaust steam through heating be aggregated into total exhaust steam 27 and get back in coal fired boiler 4 via the vapor inlet port of coal fired boiler 4 is logical.
The vapour vapour heat exchanger 11 adopted in the present embodiment and above-described embodiment two all can adopt following structure.
Vapour vapour heat exchanger 11 comprises outer cover of heat exchanger 21 and exhaust steam pipeline 22; One end of outer cover of heat exchanger 21 offers superheated vapor import 23, and the other end of outer cover of heat exchanger 21 offers unsaturated water outlet 24; Exhaust steam pipeline 22 is through the inside of outer cover of heat exchanger 21.
For improving heat transfer effect, outer cover of heat exchanger 21 inside is provided with dividing plate 25, and the quantity of dividing plate 25 is at least one piece.Dividing plate 25 is arranged between superheated vapor import 23 and unsaturated water outlet 24, and dividing plate 25 for being formed with circulation passage between superheated vapor import 23 and unsaturated water outlet 24.Wherein, the circulation passage directly formed between superheated vapor import 23 and unsaturated water outlet 24 is shorter than the circulation passage formed via dividing plate 25 between superheated vapor import 23 and unsaturated water outlet 24.
The circulation passage directly formed between superheated vapor import 23 and unsaturated water outlet 24 refers to the circulation passage that outer cover of heat exchanger 21 is formed when not arranging dividing plate 25 between superheated vapor import 23 and unsaturated water outlet 24, if to remove the dividing plate 25 in Fig. 4, this circulation passage is straight substantially.The circulation passage formed via dividing plate 25 between superheated vapor import 23 and unsaturated water outlet 24 refers to the circulation passage that outer cover of heat exchanger 21 is formed when being provided with dividing plate 25 between superheated vapor import 23 and unsaturated water outlet 24, shown in Fig. 4, this circulation passage is tortuous.
Dividing plate 25 can be parallel to exhaust steam pipeline 22 and arrange or crossingly with exhaust steam pipeline 22 to arrange, and is preferably mutually vertical, hereafter will introduces in detail.After dividing plate 25 is set, passage between superheated vapor import 23 and unsaturated water outlet 24 is not single straight passage, but tortuous passageway, the length of flow of the superheated vapor entered from superheated vapor import 23 can be extended like this, to strengthen the heat exchange of superheated vapor and the inner exhaust steam of exhaust steam pipeline 22.
See Fig. 4 ~ Fig. 8, particularly, dividing plate 25 is platy structure, and dividing plate 25 is crossing with exhaust steam pipeline 22, dividing plate 25 is provided with the through hole 26 for making exhaust steam pipeline 22 pass.Gap between the inwall of the through hole 26 on dividing plate 25 and exhaust steam pipeline 22 should be smaller, can flow to make superheated vapor along the circulation passage of formation between each dividing plate 25.
See Fig. 4, dividing plate 25 is at least two pieces, and each dividing plate 25 be arranged in parallel.In two pieces of adjacent dividing plates 25, wherein one piece of outer cover of heat exchanger 21 inwall near superheated vapor import 23 side is arranged, and there is space between this dividing plate 25 and outer cover of heat exchanger 21 inwall exporting 24 side near unsaturated water; Outer cover of heat exchanger 21 inwall that another block exports 24 side near unsaturated water is arranged, and there is space between outer cover of heat exchanger 21 inwall of this dividing plate 25 and close superheated vapor import 23 side.
See Fig. 4 ~ Fig. 8, in the present embodiment, dividing plate 25 is at least two pieces, and each dividing plate 25 be arranged in parallel.In two pieces of adjacent dividing plates 25, wherein one piece of outer cover of heat exchanger 21 inwall near superheated vapor import 23 side is arranged, and there is space between this dividing plate 25 and outer cover of heat exchanger 21 inwall exporting 24 side near unsaturated water.Outer cover of heat exchanger 21 inwall that another block exports 24 side near unsaturated water is arranged, and there is space between outer cover of heat exchanger 21 inwall of this dividing plate 25 and close superheated vapor import 23 side.
See Fig. 4, outer cover of heat exchanger 21 is in cuboid or cylindrical-shaped structure.Exhaust steam pipeline 22 is arranged along the length direction of outer cover of heat exchanger 21; Superheated vapor import 23 and unsaturated water outlet 24 lay respectively at the two ends of outer cover of heat exchanger 21 length direction, and lay respectively at the both sides of outer cover of heat exchanger 21 width direction.
The superheated vapor entered for making superheated vapor import 23 and exhaust steam pipeline 22 fully carry out heat exchange, superheated vapor import 23 and unsaturated water outlet 24 lay respectively at the two ends of outer cover of heat exchanger 21 length direction, and lay respectively at the both sides of outer cover of heat exchanger 21 width direction.Setting like this, makes superheated vapor and exhaust steam all need the whole length flowing through outer cover of heat exchanger 21 to flow out.
Particularly, outer cover of heat exchanger 21 is in cuboid or cylindrical-shaped structure.Exhaust steam pipeline 22 is arranged along the width direction of outer cover of heat exchanger 21; Superheated vapor import 23 and unsaturated water outlet 24 lay respectively at the two ends of outer cover of heat exchanger 21 length direction, and lay respectively at the both sides of outer cover of heat exchanger 21 length direction.
In the present embodiment, outer cover of heat exchanger 21 is cylindrical-shaped structure, the plate-like structure of dividing plate 25 semicircular in shape.
For ease of by exhaust steam pipeline 22 and other equipment connections to be connected, the two ends of exhaust steam pipeline 22 are all positioned at the outside of outer cover of heat exchanger 21.
Further, the quantity of exhaust steam pipeline 22 is at least two, and each exhaust steam pipeline 22 be arranged in parallel, and is preferably straight tube structure, so that install.On dividing plate 25, the setting position of through hole 26 is determined by each exhaust steam pipeline 22.
Technique scheme, especially coal-burning power plant provides a kind of tower type solar and coal-burning power plant's photothermal cogeneration to economize on coal system, makes thermal power plant save fire coal on the one hand, decreases the discharge of pollutant on the other hand.Meanwhile, boiler controller system has good peak modulation capacity, and the peak value of solar radiation is on summer and daytime, just in time corresponding with the peak value of electricity consumption, thus effectively can reduce the pressure of peak load regulation network, and whole day coal unit is in comparatively stable load.
In describing the invention; it will be appreciated that; term " orientation or the position relationship of the instruction such as " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " be based on orientation shown in the drawings or position relationship; be only for ease of describing the present invention and simplified characterization; instead of indicate or infer the device of indication or element must have specific orientation, be specific azimuth configuration and operation, because restriction the present invention being protected to content can not be interpreted as.
If employ the word such as " first ", " second " herein to limit component, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe carry out difference as not having outside Stated otherwise to component, the implication that above-mentioned word is not special.
Finally should be noted that: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technological scheme scope of request of the present invention protection.
Claims (10)
1. tower type solar and a coal fired boiler photothermal cogeneration system, is characterized in that, comprise tower type solar heat collector, coal fired boiler, steam turbine;
The water intake of described coal fired boiler and the entrance of described tower type solar heat collector are all connected with water inlet, and the boiler overheating steam outlet of described coal fired boiler is all connected with the high-pressure cylinder entrance of described steam turbine with the tower type solar heat collector superheated vapor outlet of described tower type solar heat collector.
2. tower type solar according to claim 1 and coal fired boiler photothermal cogeneration system, is characterized in that, also comprise suction booster and high-pressure heater;
The water intake of described coal fired boiler is all connected with the water outlet of described high-pressure heater with the entrance of described tower type solar heat collector; Described suction booster is arranged between the water outlet of described high-pressure heater and the entrance of described tower type solar heat collector.
3. tower type solar according to claim 2 and coal fired boiler photothermal cogeneration system, is characterized in that, also comprises vapour vapour heat exchanger;
Described vapour vapour heat exchanger has superheated vapor import, exhaust steam entrance, exhaust steam pipe outlet and unsaturated water outlet, the superheated vapor import of described vapour vapour heat exchanger and the unsaturated water outlet of described vapour vapour heat exchanger, the exhaust steam entrance of described vapour vapour heat exchanger is communicated with the exhaust steam pipe outlet of described vapour vapour heat exchanger;
The superheated vapor import of described vapour vapour heat exchanger exports with the tower type solar heat collector superheated vapor of described tower type solar heat collector and is connected, and the unsaturated water outlet of described vapour vapour heat exchanger is connected with the entrance of described suction booster; The described exhaust steam entrance of vapour vapour heat exchanger exports with the high-pressure cylinder of described steam turbine and is connected, and the exhaust steam pipe outlet of described vapour vapour heat exchanger is connected with the vapor inlet port of described coal fired boiler.
4. tower type solar according to claim 3 and coal fired boiler photothermal cogeneration system, is characterized in that, described vapour vapour heat exchanger comprises outer cover of heat exchanger and exhaust steam pipeline;
One end of described outer cover of heat exchanger offers superheated vapor import, and the other end of described outer cover of heat exchanger offers unsaturated water outlet;
Described exhaust steam pipeline is through the inside of described outer cover of heat exchanger.
5. tower type solar according to claim 4 and coal fired boiler photothermal cogeneration system, is characterized in that, described outer cover of heat exchanger inside is provided with dividing plate, and the quantity of described dividing plate is at least one piece;
Described dividing plate is arranged between described superheated vapor import and the outlet of described unsaturated water, and described dividing plate is used for being formed with circulation passage between described superheated vapor import and the outlet of described unsaturated water;
Wherein, the circulation passage directly formed between described superheated vapor import and the outlet of described unsaturated water is shorter than the circulation passage formed via described dividing plate between described superheated vapor import and the outlet of described unsaturated water.
6. tower type solar according to claim 5 and coal fired boiler photothermal cogeneration system, is characterized in that, described dividing plate is platy structure, and described dividing plate is crossing with described exhaust steam pipeline, described dividing plate is provided with the through hole for making described exhaust steam pipeline pass.
7. tower type solar according to claim 6 and coal fired boiler photothermal cogeneration system, it is characterized in that, described dividing plate is at least two pieces, and each described dividing plate be arranged in parallel;
In two pieces of adjacent described dividing plates, wherein one piece of described outer cover of heat exchanger inwall near described superheated vapor import side is arranged, and there is space between this dividing plate and the described outer cover of heat exchanger inwall exporting side near described unsaturated water; Another block is arranged near the described outer cover of heat exchanger inwall of described unsaturated water outlet side, and there is space between the described outer cover of heat exchanger inwall of this dividing plate and close described superheated vapor import side.
8., according to the arbitrary described tower type solar of claim 3-7 and coal fired boiler photothermal cogeneration system, it is characterized in that, also comprise water tank;
Described water tank is arranged between the unsaturated water outlet of described vapour vapour heat exchanger and the entrance of described suction booster.
9. tower type solar according to claim 8 and coal fired boiler photothermal cogeneration system, is characterized in that, also comprise circulating water pump;
Described circulating water pump is arranged between the entrance of described water tank and described suction booster.
10. according to the arbitrary described tower type solar of claim 1-7 and coal fired boiler photothermal cogeneration system, it is characterized in that, described coal fired boiler also has reheated steam outlet, and described reheated steam outlet is connected with the intermediate pressure cylinder of described steam turbine and the entrance of low pressure (LP) cylinder;
The high-pressure cylinder outlet of described steam turbine is connected with the vapor inlet port of described coal fired boiler.
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| CN201410382170.0A CN105332865B (en) | 2014-08-06 | 2014-08-06 | Tower type solar and coal-burning boiler photothermal cogeneration system |
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| CN201410382170.0A CN105332865B (en) | 2014-08-06 | 2014-08-06 | Tower type solar and coal-burning boiler photothermal cogeneration system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106152089A (en) * | 2016-07-01 | 2016-11-23 | 华北电力大学 | A kind of coal generating system complementary with tower type solar collecting system heat |
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| CN108679586A (en) * | 2018-05-08 | 2018-10-19 | 哈尔滨锅炉厂有限责任公司 | Photo-thermal-coal dust linkage coupling boiler and steam-water separation method |
| CN108679586B (en) * | 2018-05-08 | 2020-06-12 | 哈尔滨锅炉厂有限责任公司 | Photo-thermal-pulverized coal linkage coupling boiler and steam-water separation method |
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