CN105154138A - Solar energy gasification and power generation hybrid system - Google Patents
Solar energy gasification and power generation hybrid system Download PDFInfo
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- CN105154138A CN105154138A CN201510472379.0A CN201510472379A CN105154138A CN 105154138 A CN105154138 A CN 105154138A CN 201510472379 A CN201510472379 A CN 201510472379A CN 105154138 A CN105154138 A CN 105154138A
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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
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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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
Abstract
Disclosed is a solar energy gasification and power generation hybrid system. The hybrid system comprises: heliostat fields (1), a solar tower, carbon-containing material feeder (2), gas pre-heaters (3) for gasification, a solar energy gasifier (4), a heat absorber (5), a superheater (7), combustion gas incinerator (8), blower fans (9), a water-feeding pump (10), a gas storage tank (11), a gas storage tank (12) for gasification, a water supply pre-heater (13), a turbo generator, a cooling tower, and a deoxygenator. The components are connected through pipelines; the pipelines are provided with valves (6); the solar energy gasifier (4) and the heat absorber (5) are installed at different height of the solar tower; and the heliostat fields (1a, 1b) are projected to the solar energy gasifier (4) and the heat absorber (5), separately. The number of heliostats in the heliostat fields (1a, 1b) can be automatically adjusted therebetween according to different operation modes. The hybrid system can be switched among a plurality of operation modes according to a direct solar radiation value. The hybrid system transforms solar energy to chemical energy for storage, is small in heat loss and fast in heat release, and is clean with less pollution.
Description
Technical field
The present invention relates to the gasification of a kind of sun power and generating mixing system, particularly a kind ofly utilize sun power to carry out carbonaceous material gasification to carry out the sun power that chemical energy storage combines with solar energy tower type power station and gasify and the mixing system that generates electricity.
Background technology
Solar energy thermal-power-generating technology has the generator unit identical with conventional thermoelectricity technology, so, be very easy to by existing generating and electrical network industry accept.But the intermittence of sun power intrinsic and instability, still can cause the instability that solar energy thermal-power-generating technology electric power exports.In order to solve instability problem, conventional technique means mainly comprises: 1) extensive heat accumulation; 2) with fossil oil or biomass complemental power-generation.In extensive heat-storage technology, the most frequently used mode is melting salt heat accumulation at present, and temperature is 560 DEG C.Although by adding the modes such as lagging material, during heat accumulation, still there is a large amount of thermosteresis.Simultaneously exothermic process speed is slow, cannot the change of load-responsive fast; For the technology with fossil energy or biomass fuel complemental power-generation, then direct in parallel use that solar energy thermal-power-generating and fossil oil or biomass fuel are generated electricity, direct supplementary fossil fuel power in time not having sun power or irradiation is insufficient.In this mode, fossil oil directly burns or combustion of fossil fuel provides the carbon raw material gasification energy such as biomass still can discharge a large amount of CO
2.Patent CN201420679541, CN201520049350, CN201310180471, CN201310180460 are the modes adopting biomass gasification fired complemental power-generation in parallel with slot type or tower power station.Gasifying biomass institute energy requirement still needs combustion of fossil fuel to provide, and therefore, still discharges CO in a large number
2deng pollutent, slacken the environmental benefit of solar power station.
Summary of the invention
The object of the invention is the following shortcoming overcoming above-mentioned heat accumulation and direct fossil oil in parallel or biomass fuel complemental power-generation technology, propose the gasification of a kind of sun power and generating mixing system:
1. thermosteresis a large amount of when sensible heat heat-storage technology causes high-temperature heat-storage;
2. sensible heat heat reservoir exotherm rate slowly cannot the change of load-responsive fast;
3. fossil oil or biomass fuel are directly in parallel with system generates electricity and the gasification of biomass fuel uses fossil oil to provide heat to cause CO
2deng massive discharge of pollutant.
Sun power of the present invention gasification and the mixing system that generates electricity adopt sun power carbonaceous material to gasify the pattern combined with tower power station.Sun power gasification mainly comprises with generating mixing system: heliostat field, solar tower, sun power vapourizing furnace, heat absorber, two gasification air preheaters, feed water preheater, superheater, gas-fired incinerator, combustion gas storage tank, gasification gas storage tank, turbo-generator, cooling tower and deoxygenators.All parts is connected by metallic conduit, forms water/steam circulation, gas recirculating system and the gasification gas recycle system.Pipeline is provided with valve.Heliostat field is divided into two groups, and project respectively and be positioned on sun power vapourizing furnace on solar tower and heat absorber, sun power vapourizing furnace is positioned at lower one deck of heat absorber.
Described gas recirculating system comprises: carbonaceous material feeding machine, sun power vapourizing furnace, the second heliostat field, superheater, the second gasification air preheater, combustion gas storage tank, the first blower fan, gas-fired incinerator, feed water preheater and gasification gas storage tank.The material outlet of carbonaceous material feeding machine is connected with the carbonaceous material entrance of sun power vapourizing furnace, and sun power vapourizing furnace receives the sun power of the second heliostat field projection.The gas outlet of sun power vapourizing furnace successively accesses the fuel gas inlet of the second gasification air preheater by the 13 valve and the 4th valve, the gas outlet access combustion gas storage tank of the second gasification air preheater.Or the gas outlet of sun power vapourizing furnace connects the fuel gas inlet of superheater through the 13 valve, and the gas outlet of superheater enters the fuel gas inlet of feed water preheater by the 3rd valve, the gas outlet access combustion gas storage tank of feed water preheater.The gas outlet of combustion gas storage tank accesses the first blower fan, then the fuel gas inlet of gas-fired incinerator is connected by the 7th valve, the exhanst gas outlet of gas-fired incinerator accesses the smoke inlet of feed water preheater by the 14 valve, the gasification gas outlet of feed water preheater is by the 15 valve access gasification gas storage tank.
The described gasification gas recycle system comprises: sun power vapourizing furnace, gasification gas storage tank, the first gasification air preheater, the second gasification air preheater, the second blower fan.Gasification use gas outlet access second blower fan of gasification gas storage tank, then be connected to the gasification gas entrance of the first gasification air preheater, the gasification use gas outlet of the first gasification air preheater successively accesses the gasification gas entrance of sun power vapourizing furnace by the 11 valve and the 12 valve.Or the gasification use gas outlet of the first gasification air preheater successively accesses the gasification gas entrance of the second gasification air preheater by the 11 valve and the tenth valve, the second gasification gasification gas outlet of air preheater connects the gasification gas entrance of sun power vapourizing furnace.
Described water/steam circulation comprises: the first heliostat field, service pump, feed water preheater, heat absorber, superheater, gas-fired incinerator, turbo-generator, cooling tower and deoxygenator.The feed-water intake of feedwater pump outlet access feed water preheater, the feedwater outlet of feed water preheater accesses the feed-water intake of heat absorber by the 9th valve.Or the feedwater outlet of feed water preheater is by the 8th valve access gas-fired incinerator.Heat absorber receives the sun power of the first heliostat field projection, produces steam.The vapour outlet of heat absorber enters superheater steam-in by the first valve, or by the second valve access turbo-generator.The vapour outlet of superheater successively enters turbo-generator by the 5th valve and the 6th valve, or the vapour outlet of superheater is by the steam-in of the 5th valve access gas-fired incinerator.The vapour outlet access turbo-generator of gas-fired incinerator.The outlet access cooling tower of turbo-generator, the outlet of cooling tower connects the entrance of deoxygenator.The outlet access service pump of deoxygenator.
Described sun power gasification consists of with the structure of generating mixing system: the material outlet of carbonaceous material feeding machine is connected with the carbonaceous material entrance of sun power vapourizing furnace, the gas outlet of sun power vapourizing furnace is connected with the fuel gas inlet of superheater by the 13 valve, the gas outlet of superheater is connected with the fuel gas inlet of feed water preheater by the 3rd valve, and the gas outlet of feed water preheater connects the entrance of combustion gas storage tank; The gas outlet of sun power vapourizing furnace also can be connected with the fuel gas inlet of the 4th valve with the second gasification air preheater by the 13 valve, and the gas outlet of the second gasification air preheater accesses the entrance of combustion gas storage tank by pipeline; The outlet of combustion gas storage tank accesses the first blower fan, by the fuel gas inlet of the 7th valve access gas-fired incinerator, the exhanst gas outlet of gas-fired incinerator is connected with the smoke inlet of feed water preheater by the 14 valve, the gasification use gas outlet of feed water preheater is connected with the 15 valve, then accesses gasification gas storage tank; The outlet of gasification gas storage tank is connected with the second blower fan, the gasification gas entrance of access the first gasification air preheater, the gasification use gas outlet of the first gasification air preheater successively accesses the gasification gas entrance of sun power vapourizing furnace by the 11 valve and the 12 valve, or successively accessed the gasification gas entrance of the second gasification air preheater by the 11 valve and the tenth valve, the gasification gas outlet of the second gasification air preheater is connected to the gasification gas entrance of sun power vapourizing furnace; Feedwater pump outlet is connected with feed water preheater feed-water intake, and the feedwater outlet of feed water preheater accesses the entrance of heat absorber by the 9th valve, or is accessed the feed-water intake of gas-fired incinerator by the 8th valve; The outlet of heat absorber is connected with the first valve, then by the second valve access turbo-generator, or again by the steam-in of the 6th valve access gas-fired incinerator; The outlet of heat absorber also directly can access the steam-in of superheater by the first valve, the vapour outlet of superheater is connected with the steam-in of gas-fired incinerator by the 5th valve; The vapour outlet of gas-fired incinerator is connected with turbo-generator; The feed-water intake of service pump is connected with deoxygenator.
Gasification air preheater, feed water preheater and superheater are to ensure making full use of of systematic procedure heat.The operational mode of system determines primarily of beam radia value.When beam radia value constantly changes, system constantly switches between various operational mode.
Feature of the present invention is:
1. heliostat field is divided into two groups according to function, projects on heat absorber and sun power vapourizing furnace respectively;
2. sun power vapourizing furnace is arranged on solar tower, and reception heliostat field projects the sun power of coming and gasifies to carbonaceous material;
3. the combustion gas that the gasification of sun power vapourizing furnace produces is stored in combustion gas storage tank;
4., after gas-fired incinerator is connected on heat absorber, be connected in parallel on water feeding system outlet.
The invention has the beneficial effects as follows: 1) heliostat field is divided into two groups and projects heat absorber and sun power vapourizing furnace respectively, can adjust the quantity of heliostat in two groups of heliostat fields, be conducive to control and optimize generated energy and gas production rate according to beam radia value; 2) utilize sun power to gasify to carbon raw material in sun power vapourizing furnace, convert solar energy into chemical energy, be then stored in combustion gas storage tank, thus achieve clean acquisition, the normal temperature energy storage of fuel gas; 3) combustion gas stored is burned in gas-fired incinerator can quick release of energy, thus the change of load-responsive fast; 4) flue gas after combustion gas burning stores in gasification gas storage tank as gasification gas, for the gasification of carbonaceous fuel, achieves the recycle of material, greatly reduces the discharge of pollutent; 5) preheater in system and superheater make full use of the preheating of carbonaceous fuel gasifying, deslagging, combustion product gases, achieve the efficiency utilization of system capacity.
Accompanying drawing explanation
The gasification of Fig. 1 sun power and generating mixing system structure iron;
Fig. 2 operational mode one schematic diagram;
Fig. 3 operational mode two schematic diagram;
Fig. 4 operational mode three schematic diagram;
Fig. 5 operational mode four schematic diagram;
In figure: 1a first heliostat field, 1b second heliostat field, 2 carbonaceous material material feeders, 3a first gasification air preheater, 3b second gasification air preheater, 4 sun power vapourizing furnaces, 5 heat absorbers, 6a first valve, 6b second valve, 6c the 3rd valve, 6d the 4th valve, 6e the 5th valve, 6f the 6th valve, 6g the 7th valve, 6h the 8th valve, 6i the 9th valve, 6j the tenth valve, 6k the 11 valve, 6l the 12 valve, 6m the 13 valve, 6n the 14 valve, 6o the 15 valve, 7 superheaters, 8 gas-fired incinerators, 9a first blower fan, 9b second blower fan, 10 service pumps, 11 combustion gas storage tanks, 12 gasification gas storage tanks, 13 feed water preheaters.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and the specific embodiments.
Figure 1 shows that the structure iron of a kind of sun power gasification of the present invention and generating mixing system.As shown in Figure 1, the present invention mainly comprises: the first heliostat field 1a, the second heliostat field 1b, solar tower, carbonaceous material feeding machine 2, gasification air preheater 3, sun power vapourizing furnace 4, heat absorber 5, superheater 7, gas-fired incinerator 8, blower fan 9, service pump 10, combustion gas storage tank 11, gasification gas storage tank 12, feed water preheater 13, turbo-generator, cooling tower and deoxygenator.Coupled together by metallic conduit between parts, pipeline is provided with valve.Above-mentioned parts form water/steam circulation, gas recirculating system and the gasification gas recycle system.
Sun power vapourizing furnace 4 and heat absorber 5 are arranged on solar tower, and sun power vapourizing furnace 4 is arranged on the lower floor of heat absorber 5.The the first heliostat field 1a and the second heliostat field 1b that are positioned at ground project on heat absorber 5 and sun power vapourizing furnace 4 respectively.The quantity of the heliostat in two groups of heliostat field 1a and 1b can need to adjust between according to operation, thus regulates the energy projected in heat absorber 5 and sun power vapourizing furnace 4.
The material outlet of carbonaceous material feeding machine 2 is connected with the carbonaceous material entrance of sun power vapourizing furnace 4, the gas outlet of sun power vapourizing furnace 4 is connected with the fuel gas inlet of superheater 7 by the 13 valve 6m, the gas outlet of superheater 7 is connected with the fuel gas inlet of feed water preheater 13 by the 3rd valve 6c, and the gas outlet of feed water preheater 13 connects the entrance of combustion gas storage tank 11; The gas outlet of sun power vapourizing furnace 4 also can be connected with the fuel gas inlet of the second gasification air preheater 3b with the 4th valve 6d by the 13 valve 6m, the second gasification gas outlet of air preheater 3b entrance by pipeline access combustion gas storage tank 11; The outlet of combustion gas storage tank 11 accesses the first blower fan 9a accesses gas-fired incinerator 8 fuel gas inlet by the 7th valve 6g, the exhanst gas outlet of gas-fired incinerator 8 is connected with the smoke inlet of feed water preheater 13 by the 14 valve 6n, the gasification use gas outlet of feed water preheater 13 is connected with the 15 valve 6o, then accesses gasification gas storage tank 12; The outlet of gasification gas storage tank 12 is connected with the second blower fan 9b the gasification gas entrance of access first gasification air preheater 3a, the first gasification gasification use gas outlet of air preheater 3a successively accesses the gasification gas entrance of sun power vapourizing furnace 4 by the 11 valve 6k and the 12 valve 6l, or successively accessed the gasification gas entrance of the second gasification air preheater 3b by the 11 valve 6k and the tenth valve 6j, the gasification gas outlet of the second gasification air preheater 3b is connected to the gasification gas entrance of sun power vapourizing furnace 4; The outlet of service pump 10 is connected with the feed-water intake of feed water preheater 13, and the feedwater outlet of feed water preheater 13 accesses the entrance of heat absorber 5 by the 9th valve 6i, or is accessed the feed-water intake of gas-fired incinerator 8 by the 8th valve 6h; The outlet of heat absorber 5 is connected with the first valve 6a, then accesses turbo-generator by the second valve 6b, or accesses the steam-in of gas-fired incinerator 8 by the 6th valve 6f; The outlet of heat absorber 5 also directly can access the steam-in of superheater 7 by the first valve 6a, the vapour outlet of superheater 7 is connected with the steam-in of gas-fired incinerator 8 by the 5th valve 6e; The vapour outlet of gas-fired incinerator 8 is connected with turbo-generator; The feed-water intake of service pump 10 is connected with deoxygenator.
Below in conjunction with gas recirculating system, the gasification gas recycle system and water/steam circulation, structure of the present invention composition and working process are described.
1) gas recirculating system is as shown in Fig. 1 dashed lines, comprising: carbonaceous material feeding machine 2, sun power vapourizing furnace 4, second heliostat field 1b, superheater 7, second gasification air preheater 3b, combustion gas storage tank 11, first blower fan 9a, gas-fired incinerator 8, feed water preheater 13 and gasification gas storage tank 12.The material outlet of carbonaceous material feeding machine 2 is connected with the carbonaceous material entrance of sun power vapourizing furnace 4, and sun power vapourizing furnace 4 receives the sun power that the second heliostat field 1b projects.The gas outlet of sun power vapourizing furnace 4 successively accesses the fuel gas inlet of the second gasification air preheater 3b by the 13 valve 6m and the 4th valve 6d, the second gasification gas outlet access combustion gas storage tank 11 of air preheater 3b.Or the gas outlet of sun power vapourizing furnace 4 connects the fuel gas inlet of superheater 7 through the 13 valve 6m, the gas outlet of superheater 7 enters the fuel gas inlet of feed water preheater 13 by the 3rd valve 6c, the gas outlet access combustion gas storage tank 11 of feed water preheater 13.The gas outlet of combustion gas storage tank 11 accesses the first blower fan 9a, then the fuel gas inlet of gas-fired incinerator 8 is connected by the 7th valve 6g, the exhanst gas outlet of gas-fired incinerator 8 accesses the smoke inlet of feed water preheater 13 by the 14 valve 6n, the gasification use gas outlet of feed water preheater 13 accesses gasification gas storage tank 12 by the 15 valve 6o.
The working process of gas recirculating system is:
A) thermal energy storage process:
Carbonaceous material sends into sun power vapourizing furnace 4 by carbonaceous material feeding machine 2, receive the sun power that the second heliostat field 1b projects, high-temperature fuel gas is gasificated in sun power vapourizing furnace 4, then enter superheater 7 through the 13 valve 6m, or enter the second gasification air preheater 3b through the 4th valve 6d.The high-temperature fuel gas of superheater 7 is entered through the 13 valve 6m, the temperature after to steam that gives off energy in superheater 7 reduces, then entering feed water preheater 13 through the 3rd valve 6c releases energy to feedwater, and fuel gas temperature reduces further, then enters combustion gas storage tank 11 and stores.Enter the second gasification air preheater 3b through the high-temperature fuel gas of the 4th valve 6d to release energy after to gasification gas and reduce temperature, enter in combustion gas storage tank 11 and store.Sun power is changed into chemical energy and carries out normal temperature storage by this process.
B) exoergic process:
The combustion gas be stored in combustion gas storage tank 11 can blow through the first blower fan 9a, gas-fired incinerator 8 is entered through the 7th valve 6g, burning releases energy to feeding water or becoming flue gas after steam working medium, can as gasification gas, feed water preheater 13 is entered through the 14 valve 6n, release energy heated feed water further, reduces own temperature, then enter gasification gas storage tank 12 through the 15 valve 6o.
2) gasify the use gas recycle system as shown in phantom in Figure 1, comprising: sun power vapourizing furnace 4, gasification gas storage tank 12, first gasification air preheater 3a, the second gasification air preheater 3b, the second blower fan 9b.The gasification gasification use gas outlet access second blower fan 9b of gas storage tank 12, then be connected to the gasification gas entrance of the first gasification air preheater 3a, the first gasification gasification use gas outlet of air preheater 3a successively accesses the gasification gas entrance of sun power vapourizing furnace 4 by the 11 valve 6k and the 12 valve 6l.Or the first gasification gasification use gas outlet of air preheater 3a successively accesses the gasification gas entrance of the second gasification air preheater 3b by the 11 valve 6k and the tenth valve 6j, the second gasification gasification gas outlet of air preheater 3b connects the gasification gas entrance of sun power vapourizing furnace 4.
The working process of the gasification gas recycle system is:
Gasification gas inside sun power vapourizing furnace 4 comes from gasification gas storage tank 12, the first gasification air preheater 3a is entered under the blowing of the second blower fan 9b, the energy absorbing the release of sun power vapourizing furnace 4 deslagging improves temperature, then successively through the 11 valve 6k, 12 valve 6l enters in sun power vapourizing furnace 4, carbonaceous material is gasified, or successively through the 11 valve 6k, tenth valve 6j enters in the second gasification air preheater 3b the fume afterheat after absorbing fuel gas buring and promotes temperature, then enter in sun power vapourizing furnace 4 and carbonaceous material is gasified.
3) water/steam circulation as shown in solid lines in fig. 1, comprising: the first heliostat field 1a, service pump 10, feed water preheater 13, heat absorber 5, superheater 7, gas-fired incinerator 8, turbo-generator, cooling tower and deoxygenator.The feed-water intake of the outlet access feed water preheater 13 of service pump 10, the feedwater outlet of feed water preheater 13 accesses the feed-water intake of heat absorber 5 by the 9th valve 6i.Or the feedwater outlet of feed water preheater 13 accesses gas-fired incinerator 8 by the 8th valve 6h.Heat absorber 5 receives the sun power that the first heliostat field 1a projects, and produces steam.The vapour outlet of heat absorber 5 enters the steam-in of superheater 7 by the first valve 6a, or accesses turbo-generator by the second valve 6b.The vapour outlet of superheater 7 successively enters turbo-generator by the 5th valve 6e and the 6th valve 6f, or the vapour outlet of superheater 7 accesses the steam-in of gas-fired incinerator 8 by the 5th valve 6e.The vapour outlet access turbo-generator of gas-fired incinerator 8.The outlet access cooling tower of turbo-generator, the outlet of cooling tower connects the entrance of deoxygenator.The outlet access service pump of deoxygenator.
The working process of water/steam circulation is:
Through the feedwater of deoxygenator deoxygenation through the pumping of water pump 10, enter feed water preheater 13 and absorb the heat lift temperature that combustion gas or gasification gas discharges, then cross valve 6i through the 9th and enter heat absorber 5, or enter gas-fired incinerator 8 through the 8th valve 6h.Enter the feedwater of heat absorber 5 through the 9th valve 6i, in heat absorber 5, accept the sun power generation steam that the first heliostat field 1a projects, then enter superheater 7 through the first valve 6a, or enter turbo-generator through the second valve 6b.The energy entering the vapor absorption combustion gas release of superheater 7 through the first valve 6a promotes temperature further, then turbo-generator is entered through the 5th valve 6e and the 6th valve 6f, or directly enter through the 5th valve 6e the heat lift temperature that gas-fired incinerator 8 absorbs fuel gas buring release, then enter turbo-generator.Steam enters cooling tower cooling heat release after turbo-generator generating, then enters deoxygenator deoxygenation and promotes temperature.Enter the feedwater of gas-fired incinerator 8 through the 8th valve 6h, in gas-fired incinerator 8, become superheated vapour by the energy warms that fuel gas buring discharges, then enter turbo-generator.Steam enters cooling tower cooling heat release after turbo-generator generating, then enters deoxygenator deoxygenation and promotes temperature.
4 kinds of operational modes of the gasification of Fig. 2 ~ Figure 5 shows that sun power of the present invention and generating mixing system:
1) when beam radia value equals design point value, sun power gasification and generating mixing system limit generating limit energy storage are operational mode one:
Figure 2 shows that operational mode one of the present invention, when beam radia value equals design point value, beam radia design point value is chosen according to the beam radia value at high noon solar time in the Spring Equinox, and beam radia value is measured in real time by sun power pyrheliometer and obtained.First heliostat field 1a of load quantity heliostat projects sun power on the heat absorber 5 on solar tower, and the second heliostat field 1b of load quantity heliostat projects sun power on sun power vapourizing furnace 4.Carbonaceous material, through carbonaceous material feeding machine 2, is sent in sun power vapourizing furnace 4 at the bottom of solar tower.Gasification gas, from gasification gas storage tank 12 blowing through the second blower fan 9b, through the preheating of the first gasification with air preheater 3a, is then successively entered in sun power vapourizing furnace 4 by the 11 valve 6k and the 12 valve 6l.Carbonaceous material absorbs the second heliostat field 1b and projects the sun power gasification generation combustion gas of coming under the effect of gasification gas.Carbonaceous material gasification after deslagging discharge downwards enter first gasification gas interchanger 3a release of heat reduce temperature become waste residue discharge.The high-temperature fuel gas that produces of gasifying in sun power vapourizing furnace 4 enters superheater 7 through the 13 valve 6m and to release energy reduction temperature, then enters feed water preheater 13 and to release energy further reduction temperature, then enter in combustion gas storage tank 11 and store.Device of working medium enters feed water preheater 13 by service pump 10 pumping, the energy absorbing combustion gas release in feed water preheater 13 improves temperature, then heat absorber 5 is entered through the 9th valve 6i, receive the first heliostat field 1a and project the sun power generation steam of coming, then superheater 7 is entered through the first valve 6a, the energy receiving combustion gas release in superheater 7 promotes temperature further, then successively turbo-generator generating is entered through the 5th valve 6e and the 6th valve 6f, enter deoxygenator deoxygenation after entering cooling tower cooling afterwards to heat up, and then enter service pump 10 and circulate next time.In this mode of operation; second valve 6b, the 4th valve 6d, the 7th valve 6g, the 8th valve 6h, the tenth valve 6j, the 14 valve 6n, the 15 valve 6o are in closing condition, and the second gasification air preheater 3b, gas-fired incinerator 8, first blower fan 9a are in stopped status.
2) when beam radia value is greater than design point value, more energy storage that sun power gasifies and generating mixing system generates electricity are operational mode two
Figure 3 shows that operational mode two of the present invention, when beam radia value is greater than design point value, the equipment run in operational mode one still runs.Adjust the part heliostat of the first heliostat field 1a in the second heliostat field 1b, thus improve the sun power projecting sun power vapourizing furnace 4, improve the productive rate of combustion gas.Open the 4th valve 6d and the tenth valve 6j simultaneously, the combustion gas of the load quantity produced in sun power vapourizing furnace 4 part is made directly to enter superheater 7 through the 13 valve 6m, the combustion gas of unnecessary quantity enters the second gasification air preheater 3b through the 4th valve 6d and to release energy reduction temperature, then enters in combustion gas storage tank 11 and stores.The gasification gas of gasification gas load quantity after the 11 valve 6k directly enters sun power vapourizing furnace 4 through the 12 valve 6l, the gasification gas of accelerating enters through the tenth valve 6j the energy that the second gasification air preheater 3b receives the combustion gas release of unnecessary quantity, then enters sun power vapourizing furnace 4.Contrast operational mode one, second gasification air preheater 3b is also in running status, is used by the waste heat of the combustion gas of giving birth to higher than point institute fecund due to beam radia value in the second gasification air preheater 3b.In this mode of operation, the second valve 6b, the 7th valve 6g, the 8th valve 6h, the 14 valve 6n, the 15 valve 6o are in closing condition, and gas-fired incinerator 8, first blower fan 9a is in stopped status.
3) when beam radia value is less than the certain proportion C of design point value, when being greater than the certain proportion D of design point value, C>D, less energy storage that sun power gasifies and generating mixing system generates electricity, runs by operational mode one;
Now, adjust the part heliostat of the second heliostat field 1b in the first heliostat field 1a, reduce the sun power putting into sun power vapourizing furnace 4, thus reduce the productive rate of combustion gas, namely reduce energy storage.Other running conditions are identical with operational mode one.The value of design point value certain proportion D is gasified by sun power of the present invention and the load proportion shared by mixing system heat absorber 5 and sun power vapourizing furnace 4 that generates electricity is determined.
4) when beam radia value is less than the certain proportion D designing point value, when being greater than the certain proportion E of design point value, D > E, sun power gasification generates electricity with generating mixing system and releases energy, is operational mode three;
Figure 4 shows that operational mode three of the present invention, when beam radia value is less than the certain proportion D of design point value, when being greater than the certain proportion E of design point value, when when this ratio E value is designed with generating mixing system by sun power gasification of the present invention, heat absorber 5 minimum thermal is lost and reached thermal equilibrium, required beam radia value is determined, whole heliostats of the second heliostat field 1b are merged in the first heliostat field 1a, all heliostats all project heat absorber 5, sun power vapourizing furnace 4 is out of service, opens the sun power that gas-fired incinerator 8 is stored by fuel gas buring release.Feedwater is pumped into feed water preheater 13 through service pump 10, then a part of water enters through the 9th valve 6i the sun power generation steam that heat absorber 5 absorbs the first heliostat field 1a projection, successively enter gas-fired incinerator 8 through the first valve 6a, the second valve 6b and the 6th valve 6f, absorb the heat lift temperature of fuel gas buring release, another part water enters gas-fired incinerator 8 through the 8th valve 6h and adds thermogenesis high-temperature steam.The steam that gas-fired incinerator 8 produces enters turbo-generator generating, then enters after cooling tower cooling becomes water at low temperature and enters deoxygenator deoxygenation heating again, then enter service pump 10 and start to circulate next time.Combustion gas in combustion gas storage tank 11 blows through the first blower fan 9a and enters through the 7th valve 6g the sun power that gas-fired incinerator 8 burns release storage, heated feed water and steam, produces the high-temperature steam of turbo-generator of entering.Flue gas after burning enters feed water preheater 13 preheating feedwater as gasification gas through the 14 valve 6n and releases energy and reduce after temperature, enters in gasification gas storage tank 12 store through the 15 valve 6o.In this mode of operation; 3rd valve 6c, the 4th valve 6d, the 5th valve 6e, the tenth valve 6j, the 11 valve 6k, the 12 valve 6l, the 13 valve 6m are in closing condition, and the second heliostat field 1b, carbonaceous material feeding machine 2, first gasification air preheater 3a, the second gasification air preheater 3b, sun power vapourizing furnace 4, superheater 7, second blower fan 9b are in stopped status.
5) when the beam radia values such as night, overcast and rainy snow sky are less than the certain proportion E of design point value, sun power gasification uses energy storing and electricity generating completely with generating mixing system, is operational mode four;
Figure 5 shows that operational mode four of the present invention, when the beam radia values such as night, overcast and rainy snow sky are less than the certain proportion E of design point value, first heliostat field 1a, the second heliostat field 1b, sun power vapourizing furnace 4, heat absorber 5 are all out of service, only rely on the fuel gas generation be stored in combustion gas storage tank 11.Feedwater is pumped into feed water preheater 13 through service pump 10, then enter through the 8th valve 6h energy that gas-fired incinerator 8 absorbs fuel gas buring release to become high-temperature steam and enter turbo-generator generating, then enter after deoxygenator deoxygenation heats up through cooling tower cooling and reenter service pump 10 and circulate next time.Combustion gas enters through the 7th valve 6g the sun power that gas-fired incinerator 8 burns release storage through the first blower fan 9a from combustion gas storage tank 11, become flue gas, enter feed water preheater 13 as gasification gas through the 14 valve 6n and discharge waste-heat feedwater, then enter in gasification gas storage tank 12 through the 15 valve 6o.In this mode of operation; first valve 6a, the second valve 6b, the 3rd valve 6c, the 4th valve 6d, the 5th valve 6e, the 6th valve 6f, the 9th valve 6i, the tenth valve 6j, the 11 valve 6k, the 12 valve 6l, the 13 valve 6m closing condition, the first heliostat field 1a, the second heliostat field 1b, carbonaceous material feeding machine 2, first gasification air preheater 3a, the second gasification air preheater 3b, sun power vapourizing furnace 4, heat absorber 5, superheater 7, blower fan two 9b are in stopped status.
6) during whole year operation
When whole day of the present invention and whole year operation, according to the size of beam radia value, switch continuously between each operational mode, make system cloud gray model reach optimum electric power and export.
Claims (3)
1. a sun power gasification and generating mixing system, it is characterized in that: described sun power gasification comprises with generating mixing system: the first heliostat field (1a), second heliostat field (1b), solar tower, carbonaceous material feeding machine (2), gasification air preheater (3), sun power vapourizing furnace (4), heat absorber (5), superheater (7), gas-fired incinerator (8), blower fan (9), service pump (10), combustion gas storage tank (11), gasification gas storage tank (12), feed water preheater (13), turbo-generator, cooling tower and deoxygenator, connected by metallic conduit between parts, pipeline is provided with valve (6a, 6b, 6c, 6d, 6e, 6f, 6g, 6h, 6i, 6j, 6k, 6l, 6m, 6n, 6o),
The material outlet of described carbonaceous material feeding machine (2) is connected with the carbonaceous material entrance of sun power vapourizing furnace (4), the gas outlet of sun power vapourizing furnace (4) is connected with the fuel gas inlet of superheater (7) by the 13 valve (6m), the gas outlet of superheater (7) is connected with the fuel gas inlet of feed water preheater (13) by the 3rd valve (6c), and the gas outlet of feed water preheater (13) connects the entrance of combustion gas storage tank (11), the gas outlet of sun power vapourizing furnace (4) also can be connected with the fuel gas inlet of the 4th valve (6d) with the second gasification air preheater (3b) by the 13 valve (6m), and the second gasification uses the gas outlet of air preheater (3b) by the entrance of pipeline access combustion gas storage tank (11), the outlet of combustion gas storage tank (11) accesses the first blower fan (9a), the fuel gas inlet of gas-fired incinerator (8) is accessed by the 7th valve (6g), the exhanst gas outlet of gas-fired incinerator (8) is connected with the smoke inlet of feed water preheater (13) by the 14 valve (6n), the gasification use gas outlet of feed water preheater (13) is connected with the 15 valve (6o), and then access gasification is with gas storage tank (12), the gasification outlet of gas storage tank (12) is connected with the second blower fan (9b), the access first gasification gasification gas entrance of air preheater (3a), the gasification gas outlet of the first gasification air preheater (3a) successively accesses the gasification gas entrance of sun power vapourizing furnace (4) by the 11 valve (6k) and the 12 valve (6l), or the gasification gas entrance of the second gasification air preheater (3b) is successively accessed by the 11 valve (6k) and the tenth valve (6j), the gasification gas outlet of the second gasification air preheater (3b) is connected to the gasification gas entrance of sun power vapourizing furnace (4), the outlet of service pump (10) is connected with feed water preheater (13) feed-water intake, the feedwater outlet of feed water preheater (13) accesses the entrance of heat absorber (5) by the 9th valve (6i), or is accessed the feed-water intake of gas-fired incinerator (8) by the 8th valve (6h), the outlet of heat absorber (5) is connected with the first valve (6a), then access turbo-generator by the second valve (6b), or accessed the steam-in of gas-fired incinerator (8) by the 6th valve (6f) again, the outlet of heat absorber (5) also directly can access the steam-in of superheater (7) by the first valve (6a), the vapour outlet of superheater (7) is connected with the steam-in of gas-fired incinerator (8) by the 5th valve (6e), the vapour outlet of gas-fired incinerator (8) is connected with turbo-generator, the feed-water intake of service pump (10) is connected with deoxygenator,
Described the first heliostat field (1a) projects on heat absorber (5); Second heliostat field (1b) is transmitted on sun power vapourizing furnace (4);
Described sun power vapourizing furnace (4) is arranged on solar tower, is positioned at lower one deck of heat absorber (5).
2. according to sun power according to claim 1 gasification and generating mixing system, it is characterized in that: the quantity of the heliostat in described the first heliostat field (1a) and the second heliostat field (1b) can adjust between according to the difference of operational mode.
3., according to sun power gasification according to claim 1 and generating mixing system, it is characterized in that: the operational mode of described system is:
1) when beam radia value equals design point value, sun power gasification and generating mixing system limit generating limit energy storage are operational mode one:
When beam radia value equals design point value, beam radia design point value is chosen according to the beam radia value at high noon solar time in the Spring Equinox, and beam radia value is measured in real time by sun power pyrheliometer and obtained, first heliostat field (1a) of load quantity heliostat projects sun power on the heat absorber (5) on solar tower, and second heliostat field (1b) of load quantity heliostat projects sun power on sun power vapourizing furnace (4), carbonaceous material, through carbonaceous material feeding machine (2), is sent in sun power vapourizing furnace (4) at the bottom of solar tower, gasification gas is from gasification gas storage tank (12) blowing through the second blower fan (9b), through the preheating of the first gasification with air preheater (3a), then successively enter in sun power vapourizing furnace (4) by the 11 valve (6k) and the 12 valve (6l), carbonaceous material absorbs the second heliostat field (1b) and projects the sun power gasification generation combustion gas of coming under the effect of gasification gas, carbonaceous material gasification after deslagging discharge downwards enter first gasification gas interchanger (3a) release of heat reduce temperature become waste residue discharge, the high-temperature fuel gas that gasification produces in sun power vapourizing furnace (4) enters superheater (7) through the 13 valve (6m) and to release energy reduction temperature, then enter feed water preheater (13) to release energy further reduction temperature, then enter in combustion gas storage tank (11) and store, device of working medium enters feed water preheater (13) by service pump (10) pumping, the energy absorbing combustion gas release in feed water preheater (13) improves temperature, then heat absorber (5) is entered through the 9th valve (6i), receive the first heliostat field (1a) and project the sun power generation steam of coming, then superheater (7) is entered through the first valve (6a), the energy receiving combustion gas release in superheater (7) promotes temperature further, then successively turbo-generator generating is entered through the 5th valve (6e) and the 6th valve (6f), enter cooling tower cooling afterwards, enter deoxygenator deoxygenation again to heat up, and then enter service pump (10) and circulate next time, in this mode of operation, second valve (6b), the 4th valve (6d), the 7th valve (6g), the 8th valve (6h), the tenth valve (6j), the 14 valve (6n), the 15 valve (6o) are in closing condition, and the second gasification air preheater (3b), gas-fired incinerator (8), the first blower fan (9a) are in stopped status,
2) when beam radia value is greater than design point value, sun power gasification and the generating more energy storage in generating limit, mixing system limit are operational mode two;
When beam radia value is greater than design point value, the equipment run in operational mode one still runs; Adjust the first heliostat field (1a) a part of heliostat in the second heliostat field (1b), thus improve the sun power projecting sun power vapourizing furnace (4), improve the productive rate of combustion gas; Open the 4th valve (6d) the tenth valve (6j) simultaneously, the combustion gas of the load quantity produced in sun power vapourizing furnace (4) part is made directly to enter superheater (7) through the 13 valve (6m), the combustion gas of unnecessary quantity enters the second gasification air preheater (3b) through the 4th valve (6d) and to release energy reduction temperature, then enters in combustion gas storage tank (11) and stores; The gasification gas of gasification gas load quantity after the 11 valve (6k) directly enters sun power vapourizing furnace (4) through the 12 valve (6l), the gasification gas of accelerating enters through the tenth valve (6j) energy that the second gasification air preheater (3b) receives the combustion gas release of unnecessary quantity, then enters sun power vapourizing furnace (4); Contrast operational mode one, second gasification air preheater (3b) is also in running status, by due to beam radia value higher than point voluminous waste heat of giving birth to combustion gas be used in the second gasification air preheater (3b); In this mode of operation, second valve (6b), the 7th valve (6g), the 8th valve (6h), the 14 valve (6n), the 15 valve (6o) are in closing condition, and gas-fired incinerator (8), the first blower fan (9a) are in stopped status;
3) when beam radia value is less than the certain proportion C of design point value, when being greater than the certain proportion D of design point value, C>D, sun power gasification and the generating less energy storage in generating limit, mixing system limit, run by operational mode one;
Now, adjust part heliostat in the second heliostat field (1b) in the first heliostat field (1a), reduce the sun power putting into sun power vapourizing furnace (4), thus reduce the productive rate of combustion gas, namely reduce energy storage; Other running conditions are identical with operational mode one; The value of the certain proportion D of design point value is gasified by described sun power and to determine with load proportion shared by the heat absorber (5) of generating mixing system and sun power vapourizing furnace (4);
4) when beam radia value is less than the certain proportion D designing point value, when being greater than the certain proportion E of design point value, D > E, sun power gasification releases energy with generating generating limit, mixing system limit, is operational mode three;
When the certain proportion D that beam radia value is less than design point value is greater than the certain proportion E of design point value, heat absorber (5) minimum thermal that this ratio E value is gasified by described sun power and generating mixing system designs is lost required beam radia value when reaching thermal equilibrium and is determined; Under this operational mode, whole heliostats of the second heliostat field (1b) are merged in the first heliostat field (1a), all heliostats all project on heat absorber (5), sun power vapourizing furnace (4) is out of service, open gas-fired incinerator (8), the sun power stored by fuel gas buring release; Feedwater is pumped into feed water preheater (13) through service pump (10), then part feedwater enters heat absorber (5) through the 9th valve (6i) and absorbs the sun power that the first heliostat field (1a) projects and produce steam, successively enter gas-fired incinerator (8) through the first valve (6a), the second valve (6b) and the 6th valve (6f), absorb the heat lift temperature of fuel gas buring release, another part feedwater enters gas-fired incinerator (8) through the 8th valve (6h) and adds thermogenesis high-temperature steam; The steam that gas-fired incinerator (8) produces enters turbo-generator generating, then enters after cooling tower cooling becomes water at low temperature and enters deoxygenator deoxygenation heating again, then enter service pump (10), start to circulate next time; Combustion gas in combustion gas storage tank (11) blows through the first blower fan (9a), the sun power that gas-fired incinerator (8) burns release storage is entered through the 7th valve (6g), heated feed water and steam, produce the high-temperature steam entering turbo-generator; Flue gas after burning enters feed water preheater (13) preheating feedwater as gasification gas through the 14 valve (6n) and releases energy, after reducing temperature, store in the 15 valve (6o) enters gasification gas storage tank (12); In this mode of operation, 3rd valve (6c), the 4th valve (6d), the 5th valve (6e), the tenth valve (6j), the 11 valve (6k), the 12 valve (6l), the 13 valve (6m) are in closing condition, second heliostat field (1b), carbonaceous material feeding machine (2), the first gasification air preheater (3a), the second gasification air preheater (3b), sun power vapourizing furnace (4), superheater (7), and the second blower fan (9b) is in stopped status;
5) when the beam radia such as night, overcast and rainy snow value is less than the certain proportion E of design point value, sun power gasification uses energy storing and electricity generating completely with generating mixing system, is operational mode four;
When the beam radia such as night, overcast and rainy snow value is less than the certain proportion E of design point value, first heliostat field (1a), the second heliostat field (1b), sun power vapourizing furnace (4) and heat absorber (5) are all out of service, only rely on the fuel gas generation be stored in combustion gas storage tank (11), feedwater is pumped into feed water preheater (13) through service pump (10), then gas-fired incinerator (8) is entered through the 8th valve (6h), the energy absorbing fuel gas buring release becomes high-temperature steam, enter turbo-generator generating, again through cooling tower cooling, reenter service pump (10) after entering deoxygenator deoxygenation intensification and circulate next time, combustion gas enters through the 7th valve (6g) sun power that gas-fired incinerator (8) burns release storage through the first blower fan (9a) from combustion gas storage tank (11), become flue gas, enter the feedwater of feed water preheater (13) release waste-heat as gasification gas through the 14 valve (6n), then enter in gasification gas storage tank (12) through the 15 valve (6o), in this mode of operation, first valve (6a), second valve (6b), 3rd valve (6c), 4th valve (6d), 5th valve (6e), 6th valve (6f), 9th valve (6i), tenth valve (6j), 11 valve (6k), 12 valve (6l), 13 valve (6m) is in closing condition, first heliostat field (1a), second heliostat field (1b), carbonaceous material feeding machine (2), first gasification air preheater (3a) second gasification air preheater (3b), sun power vapourizing furnace (4), heat absorber (5), superheater (7), and second blower fan (9b) be in stopped status,
6) during whole year operation
When whole day and whole year operation, according to the size of beam radia value, sun power gasification and generating mixing system switch continuously between each operational mode, make it run and reach optimum electric power output.
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