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A method for large-scale cultivation of microalgae

A microalgae and flow channel technology, applied in the field of large-scale cultivation of microalgae, can solve the problems of low photosynthetic efficiency and light energy utilization rate of microalgae, and achieve the effect of improving light energy utilization rate and photosynthetic efficiency, and increasing production

Active Publication Date: 2017-07-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tubular, column and plate photobioreactors are typical closed photobioreactors. On this basis, many new photobioreactors have been developed. Although the shortcomings of open photobioreactors have been overcome to a certain extent, However, the photosynthetic efficiency and light energy utilization efficiency of microalgae are still low

Method used

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  • A method for large-scale cultivation of microalgae
  • A method for large-scale cultivation of microalgae
  • A method for large-scale cultivation of microalgae

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0031]In the first preferred embodiment, the first side 231 and the second side 232 are straight sides, and the flow velocity of the liquid containing microalgae is 0.5-2.5 m / s.

[0032] In the second preferred embodiment, the first side 231 and the second side 232 are concave curved sides, and the flow velocity of the liquid containing microalgae is 0.3-2m / s; more preferably, the first side 231 has a first radius of curvature, The second side 232 has a second radius of curvature, the first radius of curvature is greater than or equal to the second radius of curvature; more preferably, the first radius of curvature is 2-10 times the height H1 of the spoiler 2, and the second radius of curvature is 1-5 times of the height H1 of the flow part 2 .

[0033] Those skilled in the art should understand that the concave curved side means that relative to the spoiler section 23, the curved side is concave to the inside of the spoiler section 23, such as Figure 4 In (b) shown.

[003...

Embodiment 1

[0057] This example is used to illustrate the method for the large-scale cultivation of microalgae of the present invention.

[0058] Grow chlorella under natural light. The photobioreactor consists of upper and lower flow channels 1, a liquid storage tank and a circulation pump. The flow channels 1 are all effective light surface areas. Each flow channel 1 is 150 cm long, 10 cm wide, and 5 cm thick. There is no inclination angle, and the flow The bottom surface of the channel 1 is a non-light-proof surface, and 10 spoilers 2 are arranged on the non-light-proof surface of each channel 1. The spoiler 2 is formed by extending the spoiler section 23 along the first direction Y. The spoiler section 23 It is a triangle, including a first side 231, a second side 232 and a third side 233. The first side 231, the second side 232 and the third side 233 extend along the first direction Y to form the first spoiler surface 21 and the second side respectively. The spoiler surface 22 and t...

Embodiment 2

[0060] This example is used to illustrate the method for the large-scale cultivation of microalgae of the present invention.

[0061]Grow Chlorella under natural light. The photobioreactor consists of upper and lower flow channels 1, a liquid storage tank and a circulation pump. The flow channels 1 are all effective light surface areas. Each flow channel 1 is 150 cm long, 10 cm wide, and 15 cm thick. The inclination angle of the flow channel is 1 degree, the bottom surface of the flow channel 1 is a non-light-proof surface, and 10 spoilers 2 are arranged on the non-light-proof surface of each flow channel 1, and the spoiler 2 is formed by extending the spoiler section 23 along the first direction Y, The spoiler section 23 is triangular, including a first side 231, a second side 232 and a third side 233, and the first side 231, the second side 232 and the third side 233 extend along the first direction Y to form a first spoiler surface respectively 21. The second turbulent sur...

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Abstract

The invention discloses a method for large-scale cultivation of microalgae. The method is characterized in that microalgae are cultivated in a photobiological reactor under microalga cultivation conditions. The reactor comprises a channel (1) allowing a liquid containing algae to flow and spoilers (2), the spoilers (2) are formed through the extension of spoiling sections (23) along a first direction (Y), each of the spoiling sections (23) comprises a first edge (231), a second edge (232) and a third edge (233), the first edge (231), the second edge (232) and the third edge (233) extend along the first direction (Y) to form a first spoiling surface (21), a second spoiling surface (22) and a base surface respectively, the base surface is applied to the internal surface of the channel (1), the first spoiling surface (21) and the second spoiling surface (22) are arranged oblique to the base surface, and the first direction (Y) intersects with the extension direction of the channel (1). The method can improve the yield of the microalgae.

Description

technical field [0001] The invention relates to a method for cultivating microalgae on a large scale. Background technique [0002] In recent years, microalgae have been considered as one of the important raw materials for bioenergy and a long-term strategy to solve the future energy crisis, and have become a research hotspot. At present, the large-scale cultivation of microalgae is the bottleneck restricting the development of the microalgae bioenergy industry chain. How to realize the large-scale and high-yield cultivation of microalgae is one of the problems to be solved urgently. [0003] Light transmission is the main factor affecting the large-scale cultivation of microalgae, which directly affects the photosynthetic efficiency, growth state and light energy utilization rate of microalgae. In the research and development of microalgae culture, the photosynthesis characteristics of microalgae can be used to improve photosynthetic efficiency, for example, when the repla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/12C12N1/20C12R1/89C12R1/01
CPCC12N1/12C12N1/20
Inventor 朱俊英荣峻峰宗保宁黄绪耕周旭华程琳
Owner CHINA PETROLEUM & CHEM CORP
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