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Air-lift-type circulation photobioreactor

A photobioreactor, reactor technology, applied in the direction of photobioreactor, bioreactor/fermenter combination, specific-purpose bioreactor/fermenter, etc., can solve the problem of slow growth of microalgae and growth rate of microalgae Low, unable to carry out photosynthesis and other problems

Active Publication Date: 2013-10-30
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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Examples

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Embodiment Construction

[0046] In order to better illustrate the present invention and facilitate the understanding of the technical solutions of the present invention, typical but non-limiting examples of the present invention are as follows:

[0047] exist figure 1 Among them, 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 tube (1) of the loop reactor and the inner guide tube (2) of the loop reactor, that is, the descending section of the loop reactor.

[0048] exist figure 2 In the shown embodiment, an airlift type circulating flow photobioreactor includes an outer cylinder (1), an inner guide cylinder (2) and a circular porous plate type gas distributor (5) which are coaxially sleeved. The gas distributor (5) is placed at the bottom of the inner guide cylinder (2), and an external light source (4) and a built-in light source ( 3), radially distributed overflow holes are also arranged on the upper cylinde...

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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 air-lift type circulating optical bioreactor in which an internal and external light source simultaneously illuminates a descending section, and belongs to the field of biochemical industry. The reactor is particularly suitable for the cultivation of microalgae, so that it can be used for preparing biodiesel, producing high economic value-added products such as medicine and food, and fixing carbon dioxide, so as 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 biological, chemical and environmental engineering due to its efficient heat and mass transfer characteristics and good mixing characteristics. The air-lift loop reactor is mainly composed of three parts: an ascending pipe, a descending pipe and a gas-liquid separation zone. It has a simple structure and no stirring device. During the whole reaction...

Claims

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Application Information

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Patent Type & Authority Applications(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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