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Air-lift-type circulation photobioreactor

A photobioreactor, reactor technology, applied in the direction of photobioreactor, bioreactor/fermenter combination, bioreactor/fermenter for specific purposes, etc., can solve the problem of reduced photosynthesis efficiency and inability to perform photosynthesis , slow growth of microalgae, etc.

Active Publication Date: 2015-05-20
INST OF PROCESS ENG CHINESE ACAD OF SCI
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Problems solved by technology

If the light intensity is too weak, the light required for the growth of microalgae is insufficient, causing the growth rate of microalgae to be low; if the light intensity is too strong, some photosynthetic units are in a state of photoinhibition and cannot perform photosynthesis, which also reduces the photosynthetic efficiency. Microalgae grow slowly

Method used

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Embodiment Construction

[0046] For better illustrating the present invention, facilitate understanding technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:

[0047] exist figure 1 In the above, the area irradiated by the combined light energy of the external light source and the built-in light source is the area between the outer cylinder (1) of the loop reactor and the inner guide cylinder (2) of the loop reactor, that is, the descending section of the loop reactor.

[0048] exist figure 2 In the shown embodiment, an air-lift circular flow photobioreactor includes an outer cylinder (1), an inner guide cylinder (2) and a circular porous plate gas distributor (5) coaxially set. The gas distributor (5) is placed at the bottom of the inner guide tube (2), and the external light source (4) and the built-in light source ( 3), the upper wall of the inner guide tube (2) is also provided with radially distributed overflow holes. The reacto...

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Abstract

The invention relates to an air-lift-type circulation photobioreactor. According to the photobioreactor, light sources are respectively installed at the wall surfaces of an outer cylinder and an inner flow guide cylinder of the reactor; air enters the reactor from an air distributor at the bottom of the circulation reactor, and drives a microalgae solution in the reactor to circulate, so that light generated by the light sources can irradiate an area between the inner sleeve cylinder and the outer sleeve cylinder, and the microalgae blink effect is fully utilized to promote the microalgae culture. According to the invention, the radial distance of inner and outer dual-surface irradiation reactor descending sections is determined by a dual-flux method, thereby designing and amplifying the air-lift-type circulation photobioreactor for irradiating the descending sections synchronously by the light sources inside and outside.

Description

technical field [0001] The invention relates to an airlift type circular flow photobioreactor in which an internal and external light source simultaneously irradiates a descending section, and belongs to the field of biochemical industry. The reactor is especially suitable for the cultivation of microalgae, so that it can be used to prepare biodiesel, produce high economic value-added products such as medicine and food, and fix carbon dioxide to achieve the purpose of environmental protection. Background technique [0002] Airlift loop reactor is a new type of reaction equipment, which has been widely used in biology, chemistry and environmental engineering due to its high-efficiency heat and mass transfer characteristics and good mixing characteristics. The air-lift loop reactor is mainly composed of three parts: the riser, the downcomer and the gas-liquid separation zone. Its structure is simple and there is no stirring device. During the whole reaction process, the phase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/00C12M1/04
CPCC12M21/02C12M23/08C12M29/06C12M29/08C12M31/02
Inventor 杨宁李雪梅王玉华李静海
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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