A new type of photovoltaic thermal component auxiliary power system for carbon capture of coal-fired unit, which belongs to the field of solar thermal utilization technology, which consists of coal-fired power generation system, photovoltaic heat generation system and carbon capture system. In this system, the integrated coupling of various systems is realized through the expansion of the evaporator, in which the electric energy of the photovoltaic light and heat component is generated by the grid connected to the inverter, and the low temperature condensate of the coal-fired unit is used to cool the photovoltaic cells to improve the photoelectric conversion efficiency of the photovoltaic light and heat components. The steam generated by the expansion of the evaporator and the fourth stage extraction of the coal-fired unit into the reboiler of the regenerative tower can be adjusted by the valve to adjust the vaporizer of the evaporator and the coal-fired unit to ensure the stable operation of the reboiler, while the hydrophobicity of the reboiler and the dilatation of the dilatant evaporator returns to the deaerator to make the heat of the coal-fired unit. The economy has been improved to a certain extent. The system can improve the comprehensive utilization rate of energy, reduce the consumption of primary energy, and is conducive to energy saving and emission reduction of power plants.
【技术实现步骤摘要】
光伏光热组件辅助燃煤机组碳捕集发电系统
本专利技术涉及一种将复合抛物面光伏光热组件和燃煤机组的碳捕集有机结合在一起的联合碳捕集系统,属于太阳能热利用
背景领域复合抛物面聚光器(CompoundParabolicConcentrator,简写CPC),是一种依据边缘光线原理设计的低聚光度非成像聚光器,可将接收角范围内的入射光线按理想聚光比收集到吸收体上,最早由美国芝加哥大学Winston教授从高能物理实验研究中的辐射探测器改进而来的。与其他类型聚光器相比,CPC的运行不需要随时跟踪太阳的位置,仅需要根据季节的变化及时调整CPC的方位就能实现跟踪,结构简单,操作运行方便,在投资成本与自动化可控性方面呈现出很大的优势。光伏/光热集热器(Photovoltaic/thermalcollector,简写PVT)是利用层压或胶粘技术将太阳能电池与太阳能集热器有机结合起来。由于光生伏特效应原理,光伏电池将约10%~17%的太阳光能直接转化为电能,其余大部分能量都转换为热量,未被吸收的热能提升了光伏电池的温度,研究表明,光伏电池每提升1℃,光电转换效率则降低0.5%。PVT集热器采用强制循环流体(水或空气)来吸收太阳能电池板中未被转化成电能的热量,温度升高的水或空气可用于建筑采暖、生活热水、各种工质预热等。复合抛物面聚光器与光伏光热组件相结合,通过复合抛物面提高聚光比从而增加入射辐射能,一方面提高电池的电能输出功率,而通过光伏光热组件吸收电池背板热量,降低电池板温度,提高电效率。到目前为止,国内外对聚光型CPC-PV/T系统的研究主要集中在改进系统结构和建筑一 ...
【技术保护点】
1.一种新型光伏光热辅助燃煤机组碳捕集发电系统,由光伏光热系统、碳捕集系统以及燃煤发电系统组成,特征在于:该系统通过扩容蒸发器将各系统集成耦合,光伏光热系统和燃煤发电系统共同作为热源为碳捕集系统提供热源,通过阀门调节不同工况下光伏光热系统和汽轮机抽汽出口的蒸汽流量来保证再沸器的稳定运行,而扩容蒸发器的疏水和再沸器的疏水汇集后再返回到主给水管道。
【技术特征摘要】
1.一种新型光伏光热辅助燃煤机组碳捕集发电系统,由光伏光热系统、碳捕集系统以及燃煤发电系统组成,特征在于:该系统通过扩容蒸发器将各系统集成耦合,光伏光热系统和燃煤发电系统共同作为热源为碳捕集系统提供热源,通过阀门调节不同工况下光伏光热系统和汽轮机抽汽出口的蒸汽流量来保证再沸器的稳定运行,而扩容蒸发器的疏水和再沸器的疏水汇集后再返...
【专利技术属性】
技术研发人员:陈海平,张衡,卜跃刚,
申请(专利权)人:华北电力大学,
类型:发明
国别省市:北京,11
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