Internal circulation column photoreactor

Abstract

The invention relates to an internal circulation column photoreactor which comprises a transparent cylinder body. A partition plate is arranged in the transparent cylinder body and divides the lower portion of the transparent cylinder body into two chambers with the same size. The bottom end of the transparent cylinder body is connected with a bottom plate in a sealed mode. The positions, located on the two sides of the partition plate, of the bottom plate are each provided with a liquid circulating hole. A three-way pipe is arranged at the lower portion of the bottom plate. The two chambers are communicated through the three-way pipe. The three-way pipe is connected with a liquid inlet and outlet channel. The branch, close to the bottom plate, of the three-way pipe is provided with a ventilating assembly. A top cover is connected with the top end of the transparent cylinder body and provided with a gas outlet assembly. Supply of carbon dioxide can be improved, and molecular oxygen in a culture solution can be removed in time; meanwhile, energy consumption in the culture process is lowered, gas distribution uniformity in the photoreactor is improved, sufficient stirring of alga cells is ensured, and the running cost of the photoreactor is reduced.

Description

technical field [0001] The invention relates to the technical equipment field related to microalgae cultivation, in particular to an internal circulation column photoreactor. Background technique [0002] Microalgae can use light energy and CO 2 Synthesis of organic components such as proteins, fats and carbohydrates plays an important role in the Earth's carbon cycle and energy cycle. Certain species of microalgae are rich in high-value bioactive substances such as polyunsaturated fatty acids, active polysaccharides, and natural pigments, and thus become important sources of materials in the fields of food, feed, fuel, and medicine. [0003] At present, on a global scale, microalgae biotechnology has rapidly formed a large-scale complete industrial chain, in which large-scale cultivation is an important link. In order to support the growth of microalgae, researchers have invented a variety of open or closed reactors such as track-type culture ponds, round ponds, pipe-type...

AI Technical Summary

Problems solved by technology

[0006] 1. The traditional column reactor uses a ventilation pipe and (or) aeration element inserted from the top to aerate, and the algae cells are easy to adhere to these parts, making it difficult to clean;

[0007] 2. The traditional column reactor needs a large flow of mixed gas to make the algae liquid mix evenly

This not only leads to the waste of gas, but also makes the algal cells suffer from excessive shear force, which makes the algal cells easy to break and adhere to the wall

In addition, this also makes the gas supply device require higher gas supply parameters (or more gas supply equipment) to meet the needs of large-scale column reactor production

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