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Biomass and solar energy photo-thermal mixed power generation system

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Publication number
CN202645896U
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CN
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Grant
Patent type
Prior art keywords
biomass
heat
system
solar
steam
Prior art date
Application number
CN 201220244609
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Chinese (zh)
Inventor
薛黎明
杨耀华
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中海阳新能源电力股份有限公司
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GASES [GHG] EMISSION, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy
    • Y02E10/46Conversion of thermal power into mechanical power, e.g. Rankine, Stirling solar thermal engines

Abstract

The utility model discloses a biomass and solar energy photo-thermal mixed power generation system which comprises a solar collector system, a middle heat storage portion for storing heat in daytime or releasing heat at night, a steam generator, a biomass overheating boiler and a turbine set. The middle heat storage portion and the steam generator are in parallel connection to be arranged on a heat conduction circulation pipe of the solar collector system, the steam generator, the biomass overheating boiler and the turbine set are sequentially communicated through pipelines, the solar collector system, the steam generator the biomass overheating boiler and the turbine set are connected to form a day power generation unit, and the middle heat storage portion, the steam generator, the biomass overheating boiler and the turbine set are connected to form a night power generation unit. The biomass and solar energy photo-thermal mixed power generation system enables temperature of a steam outlet to reach to 535 DEG C and pressure of the outlet to reach to 13.3 MPa, so that efficiency of a turbine is similar to a thermal power plant. Furthermore, the biomass and solar energy photo-thermal mixed power generation system recycles burned smoke waste heat to preheat water before entering the steam generator so as to improve heat utilization rate.

Description

生物质与太阳能光热混合发电系统 Biomass and hybrid solar thermal power generation system

技术领域 FIELD

[0001] 本实用新型涉及生物质发电与太阳能光热发电技术领域,尤其是一种生物质与太阳能光热混合发电系统。 [0001] The present invention relates to materials and solar thermal power generation Technical Field Health, particularly biomass with a hybrid solar thermal power generation system.

背景技术 Background technique

[0002] 现有槽式太阳能热发电系统中通常用导热油作为传热介质,由于导热油使用温度不超过400°C,使系统中蒸汽出口温度只有370°C _380°C,出口压力在IOMPa左右。 [0002] Existing trough solar thermal power systems typically use thermal oil as a heat transfer medium, since the heat transfer oil temperature does not exceed 400 ° C, with the system in the steam outlet temperature is only 370 ° C _380 ° C, the outlet pressure IOMPa about. 这样就导致汽轮机热效率小于38%,比火电厂汽轮机效率低5%左右。 This results in less than 38% thermal efficiency of the steam turbine, the turbine efficiency is less than about 5% Power Plant. 而槽式太阳能与传统火电组成的联合循环发电系统中汽轮机效率得到提高,不过这样还是会增加CO2的排放和造成环境污染。 The combined cycle power generation system with the traditional trough solar thermal power consisting of a steam turbine efficiency is improved, but this will still increase CO2 emissions and environmental pollution. 目前,我国生物质发电产业已经初步成型,已有多家电厂正在运行。 At present, China's biomass power industry has taken shape, there are many power plants running. 生物质发电主要是消费一些多余的农作物秸杆。 Biomass power consumption is mainly some of the extra crop straw. 从已建成的生物质发电厂来看,暴露出了资源收集和管理方面的矛盾和问题。 From biomass power plants have been built point of view, it exposes the contradictions and problems in the collection and management of resources. 而生物质发电的高成本,正是由于生物质资源需要收集、运输和储存造成的,生物质发电要解决农业生产的季节性和工业生产的连续性的结合的问题。 The high cost of biomass power generation, it is precisely because biomass resources need to collect, transport and storage caused by biomass power generation to solve the problem of agricultural production combined with seasonal and industrial production continuity. 由于农作物秸杆密度小,长距离运输成本高,导致在生物质发电厂生物质燃料不足,如果大范围收集,又会增加生物质发电的高成本。 Because of crop straw density, high long-distance transportation costs, resulting in insufficient biomass power plant biomass fuel, if large-scale collection of biomass power generation will increase the cost. 而且在冬季生物质燃料大规模储存成本较高,也会提高生物质发电的成本。 And in the winter storage of large-scale biomass fuels with higher costs, it will increase the cost of biomass power generation.

实用新型内容 SUMMARY

[0003] 针对现有技术存在的问题,本实用新型的目的在于提供一种生物质与太阳能光热混合发电系统,该混合发电系统既可以利用生物质燃烧提高水蒸汽的温度、压力,从而提高汽轮机热效率,又可以降低局部地区生物质的用量,减少生物质燃料收集、运输、储存的成本。 [0003] for the presence of the prior art, the present invention aims to provide a biomass power generation and solar thermal hybrid system, the hybrid power system may improve both biomass combustion temperature of the water vapor pressure, thereby improving turbine thermal efficiency, and it can reduce the amount of biomass in some areas, to reduce the biomass collection, transportation and storage costs.

[0004] 为实现上述目的,本实用新型生物质与太阳能光热混合发电系统,包括太阳能集热场、用于白天存储热量或夜晚释放热量的中间储热部、蒸汽发生器、生物质过热锅炉和汽轮机组,中间储热部和蒸汽发生器并联设置在太阳能集热场的导热循环管道上,蒸汽发生器、生物质过热锅炉、汽轮机组通过管道依次连通,其中,太阳能集热场、蒸汽发生器、生物质过热锅炉和汽轮机组连接组成白天发电单元,中间储热部、蒸汽发生器、生物质过热锅炉和汽轮机组连接组成夜晚发电单元。 [0004] To achieve the above object, the present invention, the biomass mixed with the solar thermal power generation system comprising a solar collector field, the intermediate heat storage portion for storing heat during the day or night releasing heat, a steam generator, a biomass boiler superheating and a steam turbine unit, the intermediate heat storage unit and the steam generator is disposed in parallel to the heat transfer pipe of the solar collector field cycle, the steam generator, a biomass boiler superheater, steam turbine unit communicates through line sequentially, wherein solar collector field, the steam generating , a biomass superheat boiler and steam turbine power generation unit during the day the group consisting of connection, the intermediate heat storage unit, a steam generator, a biomass superheat boiler and steam turbine power generation unit group connected to form a night.

[0005] 进一步,所述中间储热部包括熔盐-导热油换热器、高温储热罐和低温储热罐,高温储热罐和低温储热罐分别通过熔盐循环管道与熔盐-导热油换热器连通。 [0005] Further, the intermediate portion includes a molten salt heat storage - HTF heat exchanger, the high temperature heat storage tank and a low temperature heat storage tank, the high temperature and low temperature heat storage tank through the molten salt heat storage tank (33) and molten salt circulation duct - thermal oil heat exchanger in communication.

[0006] 进一步,所述生物质过热锅炉的排烟通道上依次设置有余热预热器和烟气处理器。 [0006] Further, the raw heat provided in this order on a preheater and flue gas exhaust channel processors material superheating boiler.

[0007] 进一步,所述汽轮机组的排出端连接有水蒸气冷凝器,水蒸气冷凝器与所述余热预热器连通,水蒸气流过所述汽轮机组做功后,在水蒸气冷凝器内重新凝结为水,水导入所述余热预热器进行预热后导入所述蒸汽发生器循环使用。 After [0007] Further, the discharge end of the steam turbine unit is connected to the steam condenser, steam condenser communicating with said heat preheater, steam flowing through the steam turbine unit work in the steam condenser re after condensed water, the water introduced into the preheater heat steam generator is introduced into said preheated recycled.

[0008] 本实用新型用槽式太阳能集热系统收集的热量,为蒸汽发生器提供热能。 [0008] The present invention with trough solar heat collector system to collect and to provide heat for the steam generator. 用生物质燃烧产生的热能对蒸汽发生器产出的水蒸气进行过热,使水蒸汽出口温度达到535°C,出口压力达到13. 3mpa,这样使汽轮机热效率会与火电厂相当。 Heat produced by the combustion of biomass for steam superheating the steam generator output, so that the outlet steam temperature reaches 535 ° C, the outlet pressure reaches 13. 3mpa, so that the thermal efficiency of thermal power plants and steam turbines can be quite. 并且本实用新型回收燃烧烟气余热来为进入蒸汽发生器前的水进行预热,提高热利用率。 And the present invention is to recover heat for preheating the combustion fumes to the water before entering the steam generator, improving thermal efficiency.

附图说明 BRIEF DESCRIPTION

[0009] 图I为本实用新型结构示意图。 [0009] FIG novel structural diagram I useful present.

具体实施方式 detailed description

[0010] 下面,参考附图,对本实用新型进行更全面的说明,附图中示出了本实用新型的示例性实施例。 [0010] Next, with reference to the accompanying drawings, a more thorough description of the present invention is carried out, in the present invention is shown in the exemplary embodiment of FIG. 然而,本实用新型可以体现为多种不同形式,并不应理解为局限于这里叙述的示例性实施例。 However, the present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments described herein. 而是,提供这些实施例,从而使本实用新型全面和完整,并将本实用新型的范围完全地传达给本领域的普通技术人员。 Rather, these embodiments are provided so that this disclosure thorough and complete, and the present invention fully convey the scope to those of ordinary skill in the art.

[0011] 为了易于说明,在这里可以使用诸如“上”、“下” “左” “右”等空间相对术语,用于说明图中示出的一个元件或特征相对于另一个元件或特征的关系。 [0011] For ease of description, it can be used here, "upper", "lower", "left" and "right" Spatially relative terms, such as a diagram for explaining one element or feature is shown with respect to the other elements or features relationship. 应该理解的是,除了图中示出的方位之外,空间术语意在于包括装置在使用或操作中的不同方位。 It should be understood that in addition to the orientation shown in FIG., That spatial terms are intended to encompass different orientations of the device in use or operation. 例如,如果图中的装置被倒置,被叙述为位于其他元件或特征“下”的元件将定位在其他元件或特征“上”。 For example, if the device in the figures is inverted, it is described as element other elements or features located "under" would then be oriented "above" the other elements or features. 因此,示例性术语“下”可以包含上和下方位两者。 Thus, the exemplary term "under" can encompass both the upper and lower orientation. 装置可以以其他方式定位(旋转90度或位于其他方位),这里所用的空间相对说明可相应地解释。 Device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative described herein may be interpreted accordingly.

[0012] 如图I所示,本实用新型生物质与太阳能光热混合发电系统包括太阳能集热场I、用于白天存储热量或夜晚释放热量的中间储热部、蒸汽发生器5、生物质过热锅炉6、余热预热器7、烟气处理器8、汽轮机组9、水蒸气冷凝器10、导热油循环管道11、熔盐循环管道12、水工质循环管道13。 [0012] FIG I, the present invention is a biomass and solar thermal power generation system includes a hybrid solar collector field I, the heat storage unit for the intermediate storage of heat during the day or night releasing heat, the steam generator 5, the biomass 6 superheating boiler, heat preheater 7, the processor 8 smoke, steam turbine unit 9, the steam condenser 10, oil circulation pipe 11, the molten salt circulation duct 12, hydraulic conduit 13 medium cycle. 本实施例中,中间储热部包括熔盐-导热油换热器2、高温储热罐3和低温储热罐4,高温储热罐3和低温储热罐4分别通过熔盐循环管道12与熔盐-导热油换热器2连通,在实际应用中,中间储热部还可采用多种形式的储热结构,只要其满足白天存储热量、夜晚释放热量的功能即可。 In this embodiment, the intermediate portion includes a molten salt heat storage - HTF heat exchanger 2, the high-temperature heat storage tank 3 and a low temperature heat storage tank 4, the high-temperature heat storage tank 3 and 4 are low-temperature heat storage tank 12 by molten salt circulation duct molten salt - HTF heat exchanger 2 in communication, in practical applications, the heat storage unit may also employ the intermediate forms of thermal storage structure, the heat stored during the day as long as it satisfies, at night to heat release function.

[0013] 熔盐-导热油换热器2和蒸汽发生器5并联设置在太阳能集热场I的导热油循环管道11上。 A thermal oil heat exchanger 5 and the steam generator 2 is disposed in parallel with the solar collector field I oil circulation line 11 - [0013] The molten salt. 汽轮机组9的排出端连接有水蒸气冷凝器10,生物质过热锅炉6的排烟通道上依次设置有余热预热器7和烟气处理器8。 Turbine discharge end 9 is connected to the steam condenser 10, are sequentially disposed on the biomass superheating boiler exhaust passage 6 has a heat and flue gas preheater 7 8 processors. 蒸汽发生器5、生物质过热锅炉6、汽轮机组9、水蒸气冷凝器10、余热预热器7通过水工质循环管道13依次连通。 The steam generator 5, the superheating boiler biomass 6, Turbine 9, the steam condenser 10, in turn heat the preheater 7 through the communication conduit 13 for hydraulic medium cycle.

[0014] 在白天有阳光时该发电系统运行流程为:导热油流过太阳能集热场1,太阳能集热场I吸收太阳能转化为热能加热导热油,被加热后的导热油流出集热场后,一部分流过蒸汽发生器5,其携带的热能被水吸收,使水相变为水蒸气,水蒸气流入生物质过热锅炉6,经过生物质燃烧加热后,推动汽轮机组9发电;另一部分导热油流过熔盐-导热油换热器2,其携带的热能被熔盐吸收,实现了熔盐储热的过程。 [0014] The sun during the day when the power generation system is operating procedures: conducting oil flowing through a solar collector field, the field of solar collectors to absorb solar energy into heat energy I heating oil, thermal oil outflow after the collector heated by the field part of the flow through the steam generator 5, which carries the thermal energy absorbed by water, the water becomes vapor phase, superheated steam flows into the biomass boiler 6, after heating the biomass combustion, turbine driven generating set 9; another portion of the thermally conductive oil flows through the molten salt - HTF heat exchanger 2, which carries the thermal energy is absorbed by the molten salt, the molten salt heat storage implemented process. 白天储热过程中,熔盐从低温储热罐4流入熔盐-导热油换热器2,吸收热量后进入高温储热罐3,实现了熔盐储热的过程。 During the day the heat storage process, a low temperature molten salt from the molten salt flows into the heat storage tank 4 - HTF heat exchanger 2, the absorption of heat into the high-temperature heat storage tank 3, to achieve a molten salt heat storage process.

[0015] 生物质在生物质过热锅炉6中燃烧后产生的烟气流过余热预热器7,为水预热提供能量,然后经过烟气处理器8后排放。 Flue [0015] superheated biomass biomass combustion boiler 6 in the heat flows through preheater 7, preheated to provide energy for the water, then the processor 8 through the flue gas discharge. 实现燃烧烟气余热回收利用。 Combustion flue gas heat recovery achieved. 水流过余热预热器7吸收烟气热量后进入蒸汽发生器5,吸收导热油的热量,相变为332. 6°C、13. 3Mpa的水蒸气。 After the water flows through the heat absorber preheater 7 into the flue gas heat steam generator 5, absorbs heat conducting oil phase becomes 332. 6 ° C, water vapor 13. 3Mpa of. 水蒸气流入生物质过热锅炉6被加热到535°C,再流过汽轮机,推动汽轮机组9发电,然后经过水蒸气冷凝器10,重新凝结为水,流入余热预热器7,实现水工质的循环。 Superheated steam flows into the biomass boiler 6 is heated to 535 ° C, and then flows through the turbine, the steam turbine driven generator set 9, and then through steam condenser 10, condensed water again flows into the heat preheater 7, hydraulic achieve quality cycle.

[0016] 在夜晚无阳光时该发电系统运行流程为:熔盐从高温储热罐3流入熔盐-导热油换热器2,放出热量后进入低温储热罐4,实现了熔盐放热的过程。 [0016] The sunless at night power generating system is running processes: high temperature molten salt from the molten salt flows into the heat storage tank 3 - HTF heat exchanger 2, giving off heat into the cryogenic heat storage tank 4, to achieve a molten salt heat the process of. 在此过程中导热油流过熔盐-导热油换热器2,被熔盐加热后,再流过蒸汽发生器5,其携带的热能被水吸收,使水相变为水蒸气,水蒸气流入生物质过热锅炉6,经过生物质燃烧加热后,推动汽轮机组9发电。 In this process, heat transfer oil flows through the molten salt - HTF heat exchanger 2, the molten salt is heated, and then flows through the steam generator 5, which carries the thermal energy absorbed by water, the aqueous phase becomes water vapor, the water vapor 6 flows into the superheating boiler biomass, after heating the biomass combustion, turbine driven generator 9 group. 生物质在生物质过热锅炉6中燃烧后产生的烟气流过余热预热器7,为水预热提供能量,然后经过烟气处理器8后排放。 Biomass after smoke generation in biomass burning 6 superheating boiler preheater 7 flow through the heat recovery, provide energy for water preheater, and the processor 8 through the flue gas discharge. 实现燃烧烟气余热回收利用。 Combustion flue gas heat recovery achieved. 水流过余热预热器7吸收烟气热量后进入蒸汽发生器5,吸收导热油的热量,相变为332. 60C ,13. 3Mpa的水蒸气。 After the water flows through the heat absorber preheater 7 into the flue gas heat steam generator 5, absorbs heat conducting oil phase becomes 332. 60C, steam 13. 3Mpa of. 水蒸气流入生物质过热锅炉6被加热到535°C,再流过汽轮机,推动汽轮机组9发电,然后进过冷凝器,重新凝结为水,流入余热预热器7,实现水工质的循环。 Superheated steam flows into the biomass boiler 6 is heated to 535 ° C, and then flows through the turbine, the steam turbine driven generator set 9, and then through the condenser into the re-condensed water, flows into the heat preheater 7, to achieve a qualitative hydraulic cycle .

Claims (4)

1.生物质与太阳能光热混合发电系统,其特征在于,该混合发电系统包括太阳能集热场、用于白天存储热量或夜晚释放热量的中间储热部、蒸汽发生器、生物质过热锅炉和汽轮机组,中间储热部和蒸汽发生器并联设置在太阳能集热场的导热循环管道上,蒸汽发生器、生物质过热锅炉、汽轮机组通过管道依次连通,其中,太阳能集热场、蒸汽发生器、生物质过热锅炉和汽轮机组连接组成白天发电单元,中间储热部、蒸汽发生器、生物质过热锅炉和汽轮机组连接组成夜晚发电单元。 1. Biomass and hybrid solar thermal power generation system, characterized in that the hybrid power system comprises a solar collector field, storing heat during the day or night for the release of the intermediate heat storage unit of heat, steam generators, boilers and biomass superheating the circulation duct to the heat transfer solar collector field, the steam generator, a biomass superheating boiler, passes through the communication pipe turbine turbine, the intermediate heat storage portion, and a steam generator disposed in parallel, wherein the solar collector field, the steam generator , biomass superheat boiler and steam turbine power generation unit during the day the group consisting of connection, the intermediate heat storage unit, a steam generator, a biomass superheat boiler and steam turbine power generation unit group connected to form a night.
2.如权利要求I所述的生物质与太阳能光热混合发电系统,其特征在于,所述中间储热部包括熔盐-导热油换热器、高温储热罐和低温储热罐,高温储热罐和低温储热罐分别通过熔盐循环管道与熔盐-导热油换热器连通。 2. The biomass according to claim I solar photothermal hybrid power system, wherein said intermediate portion includes a molten salt heat storage - HTF heat exchanger, the high temperature heat storage tank and a low temperature heat storage tank, high temperature thermal oil heat exchanger in communication - low temperature heat storage tank and the molten salt heat storage tank (33) by molten salt circulation duct.
3.如权利要求I所述的生物质与太阳能光热混合发电系统,其特征在于,所述生物质过热锅炉的排烟通道上依次设置有余热预热器和烟气处理器。 I 3. Claim biomass mixed with solar thermal power generation system, wherein the raw material are sequentially disposed on the exhaust passage of the superheating boiler and the residual heat of flue gas preheater processor.
4.如权利要求3所述的生物质与太阳能光热混合发电系统,其特征在于,所述汽轮机组的排出端连接有水蒸气冷凝器,水蒸气冷凝器与所述余热预热器连通,水蒸气流过所述汽轮机组做功后,在水蒸气冷凝器内重新凝结为水,水导入所述余热预热器进行预热后导入所述蒸汽发生器循环使用。 Biomass as claimed in claim 3 of the solar light power generation system of hot mix, characterized in that the discharge end of the steam turbine unit is connected to the steam condenser, steam condenser communicating with said heat preheater, after flowing through the steam turbine group work within the steam condenser condenses back to water, heat the water introduced into the preheater of the steam generator for introducing preheated recycled.
CN 201220244609 2012-05-29 2012-05-29 Biomass and solar energy photo-thermal mixed power generation system CN202645896U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103670551A (en) * 2013-12-13 2014-03-26 昆明理工大学 Combined solar energy and biomass organic Rankine circulation system
CN104266356A (en) * 2014-05-23 2015-01-07 深圳市爱能森设备技术有限公司 Molten salt heat transfer and storage trough electricity hot water boiler and hot water preparation method
CN104456528A (en) * 2014-11-05 2015-03-25 江苏太阳宝新能源有限公司 Method and system for comprehensively utilizing stored energy and smart power grid

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103670551A (en) * 2013-12-13 2014-03-26 昆明理工大学 Combined solar energy and biomass organic Rankine circulation system
CN103670551B (en) * 2013-12-13 2015-12-09 昆明理工大学 A solar biomass with an organic Rankine cycle cogeneration
CN104266356A (en) * 2014-05-23 2015-01-07 深圳市爱能森设备技术有限公司 Molten salt heat transfer and storage trough electricity hot water boiler and hot water preparation method
CN104456528A (en) * 2014-11-05 2015-03-25 江苏太阳宝新能源有限公司 Method and system for comprehensively utilizing stored energy and smart power grid

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