A tubular photobioreactor co2 refinement device

Abstract

The invention discloses a tubular photo-biological reactor CO2 refining device. The tubular photo-biological reactor CO2 refining device mainly comprises a filter device, a liquid valve, a liquid flowmeter, a gas valve, a gas flowmeter, a gas-liquid mixed tee, an axial flow and radial flow composite labyrinth screw pump, a microbubble liquid valve and a microbubble liquid tee, wherein the axial flow and radial flow composite labyrinth screw pump comprises a pump inlet, a stator, a rotor, a fixed disc, a refining disc, a volute and a pump outlet. The rotor and the stator form an axial flow working cavity, and the fixed disc and the refining disc form a radial flow working cavity. According to the axial flow and radial flow composite labyrinth screw pump CO2 refining device disclosed by the invention, CO2 gas can be pumped into a tubular photo-biological reactor in a micron-order scale, the problems that the requirment on installation accuracy of the rotor and the stator is high is avoided, the bubble refining effect is good through two-stage refining of gas, the residence time of microbubbles in pipelines is long, the microbubbles are unlikely to float to the top of a pipe quickly, gas-liquid two-phase mass transfer and mixing are more sufficient, and the absorption of microalgae for CO2 is more thorough, so that photosynthesis is carried out preferably.

Description

technical field [0001] The invention relates to the field of microalgae cultivation engineering, in particular to a tubular photobioreactor CO 2 refinement device. Background technique [0002] Microalgae are photosynthetic microorganisms widely distributed on land and in the ocean. They can effectively use light energy, carbon dioxide, water and inorganic salts to synthesize proteins, fats, carbohydrates and high value-added biologically active substances. Therefore, they are widely used in food, energy and The environmental field has broad application prospects. [0003] Large-scale and high-density cultivation of microalgae is a key link in the microalgae biological industry, and this relies on high-performance photobioreactors. Therefore, research on photobioreactors for cultivating microalgae has always been the focus of research in the microalgae biological community. question. [0004] At present, there are mainly two types of photobioreactors for microalgae cultiv...

AI Technical Summary

Problems solved by technology

Existing CO 2 The size of the bubbles produced by the thinning device is millimeter-scale. Due to the difference in density, no matter whether the algae solution in the tube is in a flowing or static state, the bubbles basically float on the top of the tube after passing into the tubular photobioreactor. beneficial to microalgae against CO 2 The good absorption of the microalgae can not ensure sufficient photosynthesis

[0008] In the single-end compound toothed labyrinth screw pump announced by patent number 200420007044.9, in the labyrinth helix such as the single-end zigzag threaded off-type helix micro-nano bubble device announced by patent number 201410304593.0, the gap between the axial flow working cavity formed by the rotor and the stator is The key factor affecting the size of the bubbles, if the gap size is too large, the size of the bubbles coming out of the pump will be large, and the refinement effect of the bubbles will be poor; if the gap size is too small, the size of the bubbles can be small in theory, but in practice the pump Installation accuracy is difficult to achieve

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