CN205503281U - Solar energy chemistry backheat gas turbine system - Google Patents
Solar energy chemistry backheat gas turbine system Download PDFInfo
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- CN205503281U CN205503281U CN201620319760.3U CN201620319760U CN205503281U CN 205503281 U CN205503281 U CN 205503281U CN 201620319760 U CN201620319760 U CN 201620319760U CN 205503281 U CN205503281 U CN 205503281U
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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
- Y02E10/44—Heat exchange systems
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Abstract
The utility model relates to a solar energy chemistry backheat gas turbine system. Get into the heating of solar energy air heat collector behind the air compression, reentrant combustion chamber, the heat recovery steam generator heating evaporation that will feed water to with fuel mixed admission tail gas reformer, the tail gas reformer utilizes exhaust heat further to reform partly fuel and steam reforming for synthetic gas mixture, the reentrant solar energy reformer of synthetic gas mixture, and the synthetic gas gets into the compressed air co -combustion after combustion chamber and the heating, and the high temperature gas of formation gets into the gas turbine acting, gas turbine exhaust tail gas gets into the reformer and provides the heat for the reforming reaction, and reentrant heat recovery steam generator provides necessary heat for the feedwater evaporation, and this solar energy chemistry backheat gas turbine make full use of tail gas waste heat has improved system efficiency, utilizes solar energy air heat collector and solar energy reformer in with the solar energy drawing -in system again, has reduced fuel consumption, the environmental benefit and the economic benefits of improvement system by a wide margin.
Description
Technical field
This utility model relates to solar gas expander system, particularly relates to a kind of solar energy chemical recuperation cycle system.
Background technology
Global solar radiation amount about 1.7 × 1017W, wherein China accounts for 1% (1.8 × 1015W, is equivalent to 1.9 trillion tons of mark coal/years), it is 680 times of China's total energy consumption of current year.Electric power is the secondary energy sources that consumption is maximum in the world, and solar energy generation technology is the effective means alleviating current energy source crisis, and application prospect is the widest.
Solar energy generation technology is broadly divided into photovoltaic generation and the big class of photo-thermal power generation two.Photovoltaic generation generates electricity mainly by the photoelectric effect of photovoltaic battery panel.Currently mainly there are three big shortcomings in this technology: (1) generated output changes with sunlight intensity change, can not generate electricity completely with overcast and rainy at night, big to electrical network impact；(2) sunlight current density is low, and the photovoltaic battery panel area needed for unit generating capacity is big, and photovoltaic cell board manufacturing process is seriously polluted, cost is the highest；(3) photovoltaic battery panel is concentrated mainly on high-frequency short waves region (400 < λ < 1100nm) to the response wave band of solar spectral, the energy of low frequency Long wavelength region is then largely converted into heat, causes the rising of photovoltaic cell plate temperature, photoelectric transformation efficiency reduction, service life to shorten.Use concentrating photovoltaic power generation method can reduce the usable floor area of photovoltaic battery panel at double, use thin film dividing method to irradiate photovoltaic battery panel again after being separated by the low frequency long wave in sunlight, be two important directions of current photovoltaic power generation technology；For the most discontinuous problem, photovoltaic power generation technology itself is difficult to overcome, and relies primarily on accumulator or energy storage generating system (such as storage station etc.) is supporting supplementary, and cost is the highest.
Solar energy thermal-power-generating mainly has the generating of tank-type thermal power generation, linear Fresnel heat, tower type thermal generation and the hot generation technology of dish-style.Sunlight is gathered together by ultimate principle mainly by optically focused parabolic mirror (slot type mirror, linear Fresnel mirror, tower heliostat and dish-style mirror), produces steam by photothermal deformation and heat-exchanger rig or heating fluid drives heat engine generates electricity；Have an advantage in that this technology can absorb full wave sunlight, can realize generating electricity the most continuously by accumulation of heat and fuel supplement.The common heat engine in solar heat power generation system uses steam turbine, and system complex is inefficient.Gas turbine is also a kind of heat engine, and simple gas turbine system is made up of compressor, combustor and combustion gas turbine.General solar gas expander system is increase solar energy air heat collector in simple gas turbine system, i.e. preheat through solar energy air heat collector from compressor air out, enter back into combustion chambers burn and generate high-temperature fuel gas, finally enter combustion gas turbine and externally do work.Gas turbine engine systems specific power is big, and vibration noise is little, and the life-span is long, it is easy to the application such as maintenance is increasingly wider, but simple gas turbine circulates that it is inefficient, and exhaust emissions heat loss is big, typically is used in combination with steam Rankine cycle, raising system whole efficiency.Simple solar gas expander system efficiency is low, and gas-steam combined cycle system is complicated, and due to solar energy thermal-power-generating station, to compare conventional fossil fuel power plant scale relatively small, and whole efficiency is lower than Large-scale machine set, and investment is big, risk height.
Summary of the invention
This utility model is for the problem existing for existing solar gas wheel system, propose a kind of solar energy chemical recuperation cycle system, improve system whole efficiency, avoid the complexity of combined cycle system, and add solar energy proportion, improve environmental benefit and the economic benefit of system.
Concrete scheme of the present utility model is as follows:
A kind of solar energy chemical recuperation cycle system includes compressor, solar energy air heat collector, combustor, combustion gas turbine, tail-gas reformer, heat recovery steam generator, solar energy reformer, air enters compressor, after overcompression, compressed air enters solar energy air heat collector, air enters combustor after being focused sunlight heating, the high-temperature fuel gas produced enters combustion gas turbine and externally does work, and combustion gas turbine tail gas passes sequentially through tail-gas reformer and heat recovery steam generator；Feedwater is flashed to steam by tail gas heating in heat recovery steam generator, and it is mixed into tail-gas reformer with fuel, tail gas heating fuel and steam, bring it about reforming reaction, the syngas mixture that reforming reaction produces enters solar energy reformer, absorbs focused solar energy, reforming reaction occurs further, the synthesis gas that reforming reaction produces enters combustor and reacts with air, produces high-temperature fuel gas.
The air that described solar energy air heat collector flows through in utilizing the sunlight focused on heating heat collector.Common version has tubular type collector and positive displacement heat collector.In tubular type collector, air is at Bottomhole pressure, and pipe outer wall accepts focusing sunlight and irradiates and be heated；Positive displacement heat collector utilizes quartz window by aeroseal in heat collector chamber, and focusing sunlight is absorbed by the porous media arranged in positive displacement heat collector, utilizes porous media to reheat air.Air can be heated to more than 800 DEG C by air collector, and described solar energy air heat collector is tubular type collector or the one of positive displacement heat collector or a combination of both.
Described tail-gas reformer utilizes tail gas heat quantity to add hot steam and fuel mixture, is divided into fume side and reaction side, and fume side flows through tail gas, thering is provided reaction institute calorific requirement, reaction side occurs reforming reaction to produce synthesis gas, as a example by methane and steam, reforming reaction chemical equation is
CH4+H2O=CO+3H2；
CO+H2O=CO2+H2；
After reformation, synthesis gas is the mixture of methane, steam, carbon monoxide, carbon dioxide and hydrogen.This overall reaction is the endothermic reaction, reclaims the waste heat of tail gas, reduces discharge, improves system effectiveness.
The focusing sunlight that utilizes described solar energy reformer heats in reaction side further from tail-gas reformer syngas mixture out, promote methane and the further reforming reaction of steam, its reaction mechanism, with described tail-gas reformer, absorbs solar energy and enters power cycle.
Described heat recovery steam generator, is divided into water side and fume side, and fume side flows through the tail gas from described tail-gas reformer aerofluxus, adds the feedwater in hot water side and evaporates.Heat recovery steam generator has reclaimed the heat of tail gas further, reduces discharge heat loss, improves system effectiveness.
Described fuel is one or more in gas, liquid or solid fuel, and gaseous fuel includes natural gas, shale gas, and liquid fuel includes diesel oil, bio-oil, and solid fuel includes coal, biomass carbon.Described fuel and described steam enter back into tail-gas reformer reaction side by blender mixing.
The tail gas that described heat recovery steam generator fume side is discharged enters back into tail gas condenser, for condensing steam contained in tail gas, reclaims condensed water, reduces water consumption.
The focused solar energy of described solar energy air heat collector and solar energy reformer is provided by one or more in tower condenser system, disc type condensation system, trench light condensing system or linear Fresnel formula condenser system.
The reaction side of described tail-gas reformer and solar energy reformer is filled with nickel-base catalyst, accelerates reforming reaction speed.
Described compressor is divided into low pressure compressor and high pressure compressor, and intercooler is set between low pressure compressor and high pressure compressor, for cooling from low pressure compressor air out, thus the air themperature entering high compressor is greatly reduced, reduce the wasted work of high pressure compressor, improve system effectiveness.
Compared with prior art, this utility model has the advantage that
1, use tail-gas reformer and heat recovery steam generator to decrease exhaust emissions loss, improve system effectiveness, it is to avoid the use of complicated Rankine cycle, simplify system, improve the compact of system, facilitate installation and the maintenance of system.
2, the employing of solar energy reformer is greatly improved solar energy proportion in systems, reduces the usage amount of fuel, improves environmental benefit and economic benefit.
3, containing substantial amounts of hydrogen and steam due to synthesis gas, reduce the flame temperature in combustor, therefore discharged nitrous oxides significantly reduces.
Accompanying drawing explanation
Fig. 1 is solar energy chemical recuperation cycle system schematic；
In figure: compressor 1, solar energy air heat collector 2, combustor 3, combustion gas turbine 4, electromotor 5, fuel compressor 6, tail-gas reformer 7, blender 8, heat recovery steam generator 9, feed pump 10, solar energy reformer 11.
Detailed description of the invention
As shown in Figure 1, a kind of solar energy chemical recuperation cycle system, including compressor 1, solar energy air heat collector 2, combustor 3, combustion gas turbine 4, tail-gas reformer 7, heat recovery steam generator 9, solar energy reformer 11, air enters compressor 1, through overcompression laggard enter solar energy air heat collector 2, air is focused sunlight and is heated to 1000 DEG C, rear entrance combustor 3, the high-temperature fuel gas produced after burning, temperature reaches 1200 DEG C, enter combustion gas turbine 4, combustion gas turbine 4 is connected with compressor 1 by rotating shaft, power required when compressing is provided for compressor, combustion gas turbine 4 is connected with electromotor 5 by rotating shaft, electromotor 5 is driven to generate electricity, externally export electric work.Combustion gas turbine tail gas passes sequentially through tail-gas reformer 7 and heat recovery steam generator 9；Feed water and enter in heat recovery steam generator 9 after improving pressure by feed pump 10, flashed to steam by tail gas heating.After fuel is compressed by fuel compressor 6, blender 8 mixes with the steam produced in heat recovery steam generator 9, entering tail-gas reformer 7, tail gas heating fuel and steam generation reforming reaction, outlet temperature reaches 500 DEG C, the reforming reaction mixture produced enters solar energy reformer 11, absorb focused solar energy, reforming reaction, reforming reaction mixture outlet temperature 800 DEG C occur further, enter back into combustor 3 to react with air, produce high-temperature fuel gas.The exhaust temperature drained from heat recovery steam generator is 130 DEG C, and system whole efficiency is 47%, improves 11 percentage points than gas turbine simple cycle, and solar energy input reaches 4:1 with the ratio of fuel heat input.Solar energy input needed for solar energy air heat collector and solar energy reformer is provided by tower condenser system or disc type condensation system.
Claims (7)
- null1. a solar energy chemical recuperation cycle system，It is characterized in that: include compressor (1)、Solar energy air heat collector (2)、Combustor (3)、Combustion gas turbine (4)、Tail-gas reformer (7)、Heat recovery steam generator (9)、Solar energy reformer (11)，Compressor (1)、Solar energy air heat collector (2)、Combustor (3)、Combustion gas turbine (4) is sequentially connected by pipeline，Combustion gas turbine (4)、Tail-gas reformer (7) reaction side、Heat recovery steam generator (9) water side is sequentially connected by pipeline，The syngas mixture outlet of tail-gas reformer (7)、Solar energy reformer (11) reaction side、Combustor (3) is sequentially connected by pipeline，The steam outlet of heat recovery steam generator (9) water side reacts side by blender (8) with tail-gas reformer (7) and is connected.
- A kind of solar energy chemical recuperation cycle system the most according to claim 1, it is characterized in that an entrance of described blender (8) is connected with the steam outlet of heat recovery steam generator (9) water side, another entrance is connected with fuel compressor (6) outlet, and fuel and steam are mixed and fed into tail-gas reformer (7) reaction side by blender (8).
- A kind of solar energy chemical recuperation cycle system the most according to claim 1, it is characterised in that described solar energy air heat collector is the one in tubular type collector or positive displacement heat collector or a combination of both.
- A kind of solar energy chemical recuperation cycle system the most according to claim 1, it is characterized in that the offgas outlet of described heat recovery steam generator (9) fume side is connected with tail gas condenser, the tail gas discharged from the offgas outlet of heat recovery steam generator (9) fume side enters tail gas condenser, reclaims condensed water.
- A kind of solar energy chemical recuperation cycle system the most according to claim 1, it is characterised in that the focusing sunlight of described solar energy air heat collector and solar energy reformer is provided by one or more in tower condenser system, disc type condensation system, trench light condensing system or linear Fresnel formula condenser system.
- A kind of solar energy chemical recuperation cycle system the most according to claim 1, it is characterized in that described compressor (1) is divided into low pressure compressor and high pressure compressor, and intercooler is set between low pressure compressor and high pressure compressor, for cooling from low pressure compressor compressed air out.
- A kind of solar energy chemical recuperation cycle system the most according to claim 1, it is characterised in that described tail-gas reformer (7) and the reaction side of solar energy reformer (11) are filled with nickel-base catalyst.
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| CN201620319760.3U CN205503281U (en) | 2016-04-15 | 2016-04-15 | Solar energy chemistry backheat gas turbine system |
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| CN201620319760.3U CN205503281U (en) | 2016-04-15 | 2016-04-15 | Solar energy chemistry backheat gas turbine system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837818A (en) * | 2022-04-18 | 2022-08-02 | 中国联合重型燃气轮机技术有限公司 | Gas turbine system and power generation system |
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- 2016-04-15 CN CN201620319760.3U patent/CN205503281U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837818A (en) * | 2022-04-18 | 2022-08-02 | 中国联合重型燃气轮机技术有限公司 | Gas turbine system and power generation system |
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