Solar thermal chemical absorption reaction device and system

Abstract

The invention discloses a solar thermal chemical absorption reaction device and system. The device comprises a heat collection tube unit and a heat collector unit, wherein the heat collection tube unit comprises an inner tube, a coating film absorption tube and a transparent tube; a catalyst bed layer is arranged between the coating film absorption tube and the inner tube. The invention provides the solar thermal chemical absorption reaction device and system, process temperatures of a thermal chemical reaction layer (that is, the catalyst bed layer), are adjusted through heat storage and release of the inner tube, variation of the process temperatures of the catalyst bed layer can be reduced, the process temperatures of the catalyst bed layer can be uniformly distributed in an axial direction of a casing, due to uniform distribution of the process temperatures of the catalyst bed layer, the utilization efficiency of a catalyst can be improved, and the utilization efficiency of the reaction device upon solar energy can be improved. Meanwhile, integral utilization of solar energy and external heat sources can be facilitated, and due to complementary utilization of thermochemistry, efficient utilization of the solar energy and the external heat can be achieved.

Description

technical field [0001] The disclosure relates to the technical field of solar power generation, in particular to a solar thermochemical absorption reaction device and system. Background technique [0002] With the development of the current society and the improvement of people's living standards, the human demand for electricity is increasing day by day. As a clean, widely distributed, and huge amount of renewable energy, solar energy has great application potential and prospects in the sustainable utilization of energy. In view of the characteristics of solar energy such as intermittent, unstable, and low energy flux density, how to realize efficient and stable utilization of solar energy is a hot spot of concern from all walks of life at this stage. my country is rich in solar energy resources, and the average annual total solar radiation is 180W / m 2 . In Tibet, Qinghai, Xinjiang and other places, the annual sunshine duration is maintained at more than 3000h, and the a...

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Problems solved by technology

[0004] However, in the process of realizing the present disclosure, the inventors of the present disclosure have found that the parabolic trough solar energy concentrating heat collection device in the prior art, due to the thermal chemical reaction step by step along the axial direction of the trough solar thermochemical reactor, leads to the reaction The temperature distribution of the catalyst bed in the reactor is uneven, and the catalytic performance of the catalyst cannot be fully utilized, which is not conducive to the full progress of the reaction, and causes a large thermal stress in the entire reactor, which affects the service life of the reactor; and, when the solar radiation When the solar radiation is higher than the design value, the thermal chemical conversion efficiency of solar energy will decrease, and the overall utilization performance of solar energy will decrease.

In addition, in the existing thermochemical complementary utilization technologies of solar energy and external heat sources, it is usually not possible to integrate solar energy and external heat sources for integrated utilization. Split-type forms are often used to separately utilize solar energy and external heat sources, which increases the design and construction of the system. and operational complexity

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