Solar photo-thermal coupling phase conversion carbon dioxide reduction catalytic reaction system and method

Abstract

The invention belongs to the field of solar energy conversion and utilization, and discloses a solar energy photo-thermal coupling phase conversion carbon dioxide reduction catalytic reaction system and method. The system comprises a feeding device used for feeding reactants into a high-temperature phase conversion reaction device; the heat supply device is used for supplying all / part of reaction heat to the high-temperature phase conversion reaction device; the high-temperature phase conversion reaction device comprises a heat preservation heating jacket, a compensation heating jacket and a reactor, the reactor is arranged between the heat preservation heating sleeve and the compensation heating sleeve; the reactor comprises a phase conversion preheating pipe, a spherical reaction area and a tail pipe which are connected in sequence. On the basis of ensuring high-precision testing, the high-integration and automatic design can effectively reduce the cost of sites, materials, labor and the like. The device is wide in application range, high in sunlight utilization rate, high in CO2 reduction reaction efficiency and capable of achieving full-spectrum solar-driven photo-thermal coupling catalysis CO2 reduction reaction.

Description

technical field [0001] The invention belongs to the field of solar energy conversion and utilization, and in particular relates to a solar photothermal coupled phase conversion carbon dioxide reduction catalytic reaction system and method. Background technique [0002] The transformation of energy and power technology can directly promote the leap-forward development of human civilization and social economy. Mastering revolutionary and leading energy and power technology and industrial technology is the basic and necessary condition for the rise of all world powers and leading world development in history. Today's excessive consumption of fossil energy by humans has caused urgent problems such as climate change, energy crisis and environmental pollution. In the natural carbon cycle, CO in the atmosphere 2 Absorbed by plants and then returned to the atmosphere through biological or geological processes, it is always in a dynamic equilibrium. However, with the rapid developm...

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Problems solved by technology

[0004] However, due to the discontinuity of solar energy and the instability of climate and meteorological conditions, the existing solar photothermal coupled catalytic reactors have many deficiencies

(1) The instability of sunlight will make it difficult to keep the temperature in the reactor constant, and the temperature not only determines the phase of the reactants, but also plays an important role in the photothermal coupling catalyzed CO2 reduction reaction. The rate also has a great influence; (2) The photothermal coupling catalytic reaction is often accompanied by the increase of the system pressure, which poses a greater challenge to the design and optimization of the material inlet and outlet; (3) Due to the discontinuity of solar energy, the traditional The solar photothermal reactor can only be used intermittently, which causes system instability and increases the difficulty of time management for operators; (4) The feed ratio of reactants is very important for photothermal coupling catalytic CO2 reduction The product selectivity and yield of the reaction have a great influence, and the feeding method in the traditional photothermal coupling catalytic system cannot accurately control the feeding amount of CO2 and water, and cannot precisely control a single product (5) The extensiveness of sunlight and the influence of buildings and the surrounding environment have high requirements for the construction of the system, the layout of the site and the distribution of light paths

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