Reaction device for preparing hydrogen through solar photocatalysis

Abstract

The invention discloses a novel reaction device for preparing hydrogen through solar photocatalysis. A light source adopts sunshine gathered by a shaft type sun focuser; the shaft type sun focuser mainly comprises a linear paraboloid condenser and an automatic sun tracking system or only consists of a linear paraboloid condenser; a snake-shaped coil pipe type reactor is arranged at a center light spot of the linear paraboloid condenser; a circulating water cooling device is additionally arranged around the snake-shaped coil pipe type reactor. Under the action of the condensed sunshine, reaction liquid fully mixed with a catalyst is subjected to photocatalysis reaction in the snake-shaped coil pipe type reactor; generated hydrogen is finally subjected to detection and collection after being subjected to gas-liquid separation and being purified by a filter. The reaction system realizes full mixing of the catalyst and the reaction liquid on the premise of utilizing sunshine to the greatest extent and has the advantages of reasonable manufacturing cost, high reaction rate, convenience in operation and stable running.

Description

technical field [0001] The invention belongs to the field of large-scale preparation of renewable energy, and relates to a photocatalytic decomposition of water and pollutants under direct solar light, and a device for hydrogen production, hydrogen purification, separation and collection by reforming biomass, in particular to a device for producing hydrogen by using solar photocatalysis A novel reaction device for hydrogen. Background technique [0002] Hydrogen has become the most promising new energy in the 21st century because of its clean, efficient, high calorific value, and environmental friendliness. Although there is still a long time before hydrogen energy can be widely used, its research and development are of great significance for solving the energy problems faced by human beings in sustainable development. Converting solar energy to hydrogen can form a virtuous energy system. Scientists have described an ideal hydrogen energy system: using solar energy to spli...

AI Technical Summary

Problems solved by technology

This tubular reactor has the following disadvantages: (1) Due to the limitation of the outer surface area, the light-receiving area of ​​the traditional tubular photocatalytic reactor is limited, which greatly limits the utilization of focused sunlight; (2) the traditional tubular photocatalytic reactor The structure of the photocatalytic reactor is relatively simple, and it is easy to cause the photocatalyst to settle down from the reaction liquid, which not only seriously affects the efficiency of photocatalytic hydrogen production, but also greatly affects the stability of the photocatalytic reaction due to blockage.

[0004] Retrieval and review of relevant literature and patents found that there are currently many reports on photocatalytic decomposition of water and pollutants and hydrogen production from reformed biomass. However, due to the limitations of experimental equipment and other conditions, these systems generally adopt simple Solar concentrating device, without using a solar concentrating device with high-precision automatic sun tracking function, can not fully and efficiently use solar energy

In the field of photocatalysis, the application of new photocatalytic reactors is mainly limited to the photocatalytic degradation of organic pollutants, but there are no formal experiments on the use of new photocatalytic reactors to decompose water and pollutants and reform biomass to produce hydrogen. to report

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