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Twin-turbine heat and power cogeneration system and method based on aluminum water reaction

A technology of aluminum water reaction and cogeneration of heat and power, applied in circuits, fuel cells, electrical components, etc., can solve problems such as low energy efficiency, waste of energy resources, and non-use of reaction heat, and achieve high system efficiency

Active Publication Date: 2016-08-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are based on the impregnation of aluminum-containing metal powder in aqueous solution at room temperature, and do not pay attention to the heat of reaction.
Both of these two aluminum energy utilization systems waste a lot of energy resources, and their system energy efficiency is lower than 50%.

Method used

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  • Twin-turbine heat and power cogeneration system and method based on aluminum water reaction
  • Twin-turbine heat and power cogeneration system and method based on aluminum water reaction

Examples

Experimental program
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specific Embodiment 1

[0052] Specific embodiment 1 ( figure 1 )

[0053] A certain amount of millimeter-scale (5-10mm) massive water-reactive metals (aluminum alloys are composed of 85% aluminum, 7% lithium, and 8% magnesium) in the reactor cavity 3, firstly, the reactor cavity 3 is pre-treated. After reaching 700°C, the booster pump 1 is started to pass water to the aluminum-water reactor. There are two paths of water, and one path enters the reactor cavity 3 as reaction water to react with the water-reactive metal to generate aluminum oxide and hydrogen, and release a large amount of heat. The other way, water as the working medium, enters the heat exchange component 2, absorbs part of the heat of reaction, and turns into superheated steam. When the temperature and pressure of the gas in the reactor cavity 3 reach a predetermined value, the outlet valve is opened. Hydrogen (2MPa, 600°C) flows out of the reactor cavity 3 and enters the hydrogen turbine 4 to drive the generator 5, which converts...

specific Embodiment 2

[0054] Specific embodiment 2 ( figure 2 ):

[0055] A certain amount of millimeter-scale (5-10mm) massive water-reactive metals (aluminum alloys are composed of 90% aluminum, 5% lithium, and 5% magnesium) in the reactor cavity 13, firstly, the reactor cavity 13 is pre-treated. After reaching 670°C, start the booster pump 11 to feed water to the aluminum-water reactor. There are two paths of water, and one path enters the reactor cavity 13 as reaction water to react with the water-reactive metal to generate aluminum oxide and hydrogen, and release a large amount of heat. The other way, water as the working medium, enters the heat exchange component 12, absorbs part of the heat of reaction, and turns into superheated steam. When the gas temperature and pressure in the reactor cavity 13 reach a predetermined value, the outlet valve is opened. Hydrogen (1MPa, 500°C) flows out of the reactor cavity 13 and enters the hydrogen turbine 14 to drive the generator 15, which converts ...

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Abstract

The invention relates to the field of efficient use of novel clean energies and aims to provide a dual-turbine cogeneration system and method based on aluminum-water reaction. The system comprises a hydrogen turbine and a steam turbine that are respectively connected to generators; an aluminum water reactor is composed of a reactor cavity and a heat exchange component; a booster pump is respectively connected with an inlet; the reactor cavity is connected to the hydrogen turbine; the hydrogen turbine, fuel cells and the booster pump are connected in sequence; the heat exchange component is connected to the steam turbine; the steam turbine, a heat exchanger and the booster pump are connected in sequence. According to the invention, hydrogen and reaction heat are utilized at the same time, the reaction heat is converted into electric energy by using the turbines, and the system efficiency is higher; the energy utilization efficiency of the system is up to 70%, wherein the power generation efficiency is greater than 27%; the system can supply heat energy while supplying power, and is suitable for small and medium distributed energy supply of field work, small buildings in remote areas, and the like; the dual-turbine cogeneration system is a closed system, and the used aluminum alloy is recyclable, so that the system has no emission of pollutants and wastes, and is clean and environment-friendly.

Description

technical field [0001] The invention discloses a cogeneration system and method based on aluminum-water reaction, which belongs to the field of high-efficiency utilization of new clean energy. Background technique [0002] Due to the rapid development of human society, the rapid growth of population and the extensive use of petrochemical resources, environmental degradation such as greenhouse effect, air pollution and acid rain has been caused. This forces people to give priority to resources-rich and environmentally friendly energy sources when choosing energy sources. Aluminum is the most abundant metal element in the earth's crust, and has the advantages of wide source, high energy density, non-toxicity, and stable storage. The energy density of aluminum reaches 29MJ / kg. As an energy material, it has attracted people's attention since the 1940s and has been used in many fields. In addition to releasing a large amount of hydrogen, the reaction of aluminum water also rele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04029
CPCY02E60/50
Inventor 杨卫娟王智化张彦威周俊虎刘建忠周志军程军黄镇宇岑可法
Owner ZHEJIANG UNIV