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Flat-plate gas-lift circulation type algae culture photosynthetic reactor and microalgae culture method using flat-plate gas-lift circulation type algae culture photosynthetic reactor

A technology for photosynthetic reactors and airlift circulation, applied in photobioreactors, methods based on microorganisms, bioreactor/fermenter combinations, etc., can solve the problem of not considering the influence of reactor flow field and light intensity To achieve the effect of promoting the flash effect, increasing the photosynthesis and biomass production of microalgae, strengthening gas-liquid stirring and material transfer

Active Publication Date: 2014-07-30
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, neither of the above two reactors is an airlift loop reactor, and no algae cultivation experiment has been carried out to analyze the influence of the flow field on the biomass production.
Yu used CFX software to calculate the flow field of a flat-plate airlift loop reactor with only two built-in vertical partitions, and correlated the flow field dynamic parameters and reactor structure with the biomass production of microalgae, but did not consider The influence of the dynamic growth process of microalgae on the flow field of the reactor, without considering the light intensity, CO 2 The effect of growth conditions such as culture medium and medium on the biomass production of microalgae

Method used

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  • Flat-plate gas-lift circulation type algae culture photosynthetic reactor and microalgae culture method using flat-plate gas-lift circulation type algae culture photosynthetic reactor
  • Flat-plate gas-lift circulation type algae culture photosynthetic reactor and microalgae culture method using flat-plate gas-lift circulation type algae culture photosynthetic reactor
  • Flat-plate gas-lift circulation type algae culture photosynthetic reactor and microalgae culture method using flat-plate gas-lift circulation type algae culture photosynthetic reactor

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Experimental program
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Effect test

Embodiment 1

[0036] The material of the flat air-lift circulation algae-growing photosynthetic reactor is toughened glass with a thickness of 7.0 mm, which was purchased from Hangzhou Jingding Glass Products Co., Ltd. The height of the flat air-lift circulation type algae-growing photosynthetic reactor is 600cm, the width is 400cm, and the thickness is 20cm. Two vertical partitions 2 on the left and right divide the whole flat-plate air-lift circulation type algae-culture photosynthetic reactor into a central flow rising area and two A two-sided flow drop zone. In the central flow ascending area of ​​the flat air-lift circulation type algae-growing photosynthetic reactor, cross-draining transverse partition groups are equidistantly arranged, and the upper and lower intervals of each transverse partition 1 are 20 cm, and the transverse width of the transverse partition 1 15cm, the transverse partitions 1 are respectively fixed on the front wall 6 and the rear wall 7 to intersect, and the ch...

Embodiment 2

[0039] The material of the flat air-lift circulation algae-growing photosynthetic reactor is polystyrene (PS) with a thickness of 4.0 mm, which was purchased from Hangzhou Jingding Glass Products Co., Ltd. The height of the flat air-lift circulation algae-growing photosynthetic reactor is 300cm, the width is 200cm, and the thickness is 10cm. The left and right vertical partitions 2 divide the entire flat-plate air-lift circulation algae-growing photosynthetic reactor into a central flow rising area and two Downflow zone on both sides. In the central flow ascending area of ​​the flat air-lift circulation type algae-growing photosynthetic reactor, the cross-drainage transverse partition group is equidistantly arranged, and the upper and lower distances of each transverse partition 1 are 8.0cm, and the transverse width of the transverse partition 1 Both are 6cm, and the transverse partitions 1 are respectively fixed on the front wall 6 and the rear wall 7 to cross and arrange, an...

Embodiment 3

[0042] The material of the flat air-lift circulation algae-growing photosynthetic reactor is plexiglass with a thickness of 5.0 mm, which was purchased from Hangzhou Jingding Glass Products Co., Ltd. The height of the flat air-lift circulation type algae-growing photosynthetic reactor is 40cm, the width is 30cm, and the thickness is 5cm. Two vertical partitions 2 on the left and right divide the whole flat-plate air-lift circulation type algae-culture photosynthetic reactor into a central flow rising area and two A two-sided flow drop zone. In the central flow ascending area of ​​the flat air-lift circulation type algae-growing photosynthetic reactor, cross-draining transverse partition groups are equidistantly arranged. Both are 3.0 cm, and the transverse partitions 1 are respectively fixed on the front wall 6 and the rear wall 7 to cross and arrange, and the channel width for the upward flow of the algae liquid is reserved to be 2.0 cm. Four glass sand cores 5 with a diamet...

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Abstract

The invention relates to biomass energy utilization technologies, and aims to provide a flat-plate gas-lift circulation type algae culture photosynthetic reactor and a microalgae culture method using the flat-plate gas-lift circulation type algae culture photosynthetic reactor. The flat-plate gas-lift circulation type algae culture photosynthetic reactor is in a box type structure, the top of the box type structure is provided with an opening with a diameter of 3cm, the box type structure is internally divided into three regions by partitions, the three regions are respectively a center flow rising region and two side flow descending regions; the microalgae culture method includes the following steps: inoculating a microalgae liquid to the flat-plate gas-lift circulation type algae culture photosynthetic reactor, setting a light source at one side of the flat-plate gas-lift circulation type algae culture photosynthetic reactor, and using a gas pump to send air or industrial flue gas into the flat-plate gas-lift circulation type algae culture photosynthetic reactor. The flat-plate gas-lift circulation type algae culture photosynthetic reactor can form a rotating alternate large eddy flow, strengthens the gas-liquid mixing and mass transfer, can significantly improve the algae fluid flow field and promote the flash effect, and is beneficial to enhancing the photosynthesis and biomass yield of microalgae.

Description

technical field [0001] The invention relates to biomass energy utilization technology, in particular to a flat air-lift circulation type algae-growing photosynthetic reactor and a method for microalgae cultivation. Background technique [0002] As the third-generation biofuel, microalgae energy is a frontier research hotspot and the focus of high-tech competition in the field of new energy at home and abroad. How to develop a three-dimensional algae cultivation reactor to achieve high-density cultivation of microalgae to significantly increase the microalgae per unit area Algae biomass production is a hot and difficult issue at present. One of the key limiting factors in the design of photosynthetic bioreactors is the light-guiding characteristics. Generally, methods such as increasing the effective light intensity and the light-receiving surface of the reactor, and improving the gas-liquid flow characteristics can be adopted. Orlando et al. conducted a full-life cycle ener...

Claims

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Application Information

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IPC IPC(8): C12M1/00C12M1/04C12N1/12C12R1/89
CPCC12M21/02C12M23/02C12M23/22C12M23/34C12M27/20C12M29/18C12M31/00C12M41/34C12N1/12
Inventor 程军岑可法刘建忠周俊虎黄镇宇王智化杨卫娟张彦威周志军
Owner ZHEJIANG UNIV
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