System and method for assisting carbon dioxide energy recycling based on nanobubbles

Abstract

The invention belongs to the technical field of energy recycling, and discloses a system and method for assisting carbon dioxide energy recycling based on nanobubbles, and the system comprises a solar hydrogen generation module, a micro-nano bubble generation module and a biological reaction module; the solar hydrogen generation module is communicated with the micro-nano bubble generation module and is used for generating hydrogen and sending the generated hydrogen to the micro-nano bubble generation module; the micro-nano bubble generation module is used for mixing hydrogen and biological liquid by using a micro-nano bubble machine to generate the biological liquid containing hydrogen micro-nano bubbles; and the biological reaction module is used for carrying out biological reaction by utilizing a bioreactor to realize energy utilization of carbon dioxide. Hydrogen micro-nano bubbles are used for providing hydrogen for the bioreactor, and the gas-liquid mass transfer efficiency of hydrogen is improved, so that the biological methanation rate of hydrogen and carbon dioxide is improved; carbon dioxide energy utilization can be realized, and a practical and feasible scheme is provided for carbon peak reaching and carbon neutralization.

Description

technical field [0001] The invention belongs to the technical field of energy recycling, and in particular relates to a system and method for assisted carbon dioxide energy recycling based on nano-bubble. Background technique [0002] At present, the technologies for realizing carbon dioxide energy are chemical method and biological method. The chemical method requires the use of metal catalysts, and the reaction conditions are harsh; while the biological method has a mild reaction, using hydrogen and carbon dioxide to synthesize methane into methane. The main technical and economic challenge of biomethanation is the low gas-liquid mass transfer efficiency, which makes it difficult to achieve industrial scale. [0003] In recent years, the research and development of biomethanation processes have attracted the attention of many scholars. Reactor types include: continuous stirred reactor, biofilm reactor, trickle bed reactor. The classic continuous stirred reactor (CSTR) i...

AI Technical Summary

Problems solved by technology

The disadvantage of the electrochemical hydrogen evolution method is that it is limited by the voltage and current, the hydrogen produced is limited, and the processing capacity is limited.

The hollow fiber membrane module circulation method needs to ensure strict air tightness and consumes a lot of energy

Moreover, the membrane modules are often clogged, requiring maintenance and replacement, which affects the stability and sustainability of the system

[0004] Through the above analysis, the problems and defects of the existing technology are: the application cost of the existing biomethanation reactor is relatively high, and due to factors such as low hydrogen density, low solubility and slow utilization of hydrogen by hydrogenophilic methanogens, resulting in hydrogen Serious waste

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