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Gas-driven algal solution circulating device for microalgae culture and use method

A microalgae culture and gas-driven technology, which is applied in enzymology/microbiology devices, biochemical cleaning devices, biochemical equipment and methods, etc., can solve the problem of limited reactor installation layout and space utilization, and inability to flexibly adapt to reactions The type of the device, the inability to switch between forward and reverse, etc., to achieve the effect of being beneficial to the utilization of carbon sources, good application value, and easy to wash repeatedly

Active Publication Date: 2020-04-28
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is a common problem in the current PBR technology: in order to prevent algal cell settlement and improve nutrient mass transfer, various liquid pumps or compressed air bubbling are required inside the PBR as a power source to drive the flow of algae liquid
Although this structure solves the problem of damage to algae cells by shear force, there is a physical limit to the height of algae liquid by using vacuum to drive the movement of algae liquid. The maximum theoretical height is 10 meters (gauge pressure is 0). If the pipeline and The pressure loss caused by fluid flow friction in the reactor, the actual height is only 2-5 meters, which limits the installation layout and space utilization of the reactor
At the same time, the algae liquid can only flow in one direction, and it is impossible to switch the flow direction in the reactor to enhance mass transfer or to wash and clean the inner wall of the reactor.
Wen Yonghuang and others have also proposed another reactor device that utilizes positive air pressure to drive circulation (patent: CN208776732U, a tubular photobioreactor for microalgae cultivation), but this device still needs to use a liquid pump, the pump shears Cut damage to algae cells cannot be avoided
In addition, the structure of the above-mentioned device is complex, and the algae liquid flow driving device must be fully integrated with the microalgae cultivation photoreactor (mainly the fence pipe reactor), which cannot be flexibly adapted to other reactor types

Method used

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  • Gas-driven algal solution circulating device for microalgae culture and use method

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Embodiment 1

[0054] In this embodiment, a gas-driven algae liquid circulation device for cultivating microalgae and a method for using the device are provided. Such as figure 1 As shown, the device includes a first liquid storage tank (1) and a second liquid storage tank (2), and the top of the first liquid storage tank (1) has a first pressurization port (4) and a first pressure relief port ( 6), the top of the second liquid storage tank (2) has a second boost port (3) and a second pressure release port (5). The first pressurization port (4) and the second pressurization port (3) are respectively used for introducing gas into the first liquid storage tank (1) and the second liquid storage tank (2), and the first release The pressure port (6) and the second pressure release port (5) are respectively used to discharge the gas in the first liquid storage tank (1) and the second liquid storage tank (2) to release the air pressure.

[0055] The first pressure-increasing port (4) and the seco...

Embodiment 2

[0070] This embodiment provides a device for driving Haematococcus pluvialis reactor cultivation. Wherein, the closed main reactor is a plastic pipeline reactor with a diameter of 6 cm. The reactor is made of transparent PVC material with a wall thickness of 1 mm. The steel wire with a diameter of 0.5 mm in the wall is used as a keel to ensure that the pipeline is under pressure. 1MPa does not deform, and the inner wall of the pipe is smooth. The total length of the reactor pipe is 4,000 meters. The pipe is bent into a spiral shape. The diameter of the spiral coil is 1 meter and the pitch is 10 cm. Therefore, the total length of the reactor spiral coil is about 1,200 meters. It is folded into two sections of 600 meters each and placed horizontally. The overall area of ​​the reactor is about 1200 square meters, with a total volume of about 11 cubic meters.

[0071] Such as Figure 5 As shown, the plastic pipeline reactor is connected to the gas-driven microalgae culture algae...

Embodiment 3

[0075] In this embodiment, a device for driving the cultivation of a chlorella reactor is provided, the closed main reactor is a microalgae cultivation reactor, and the microalgae cultivation reactor is a flat plate reactor with an inner diameter of 5 cm, The reactor is made of glass, the wall thickness is 10mm, the working height of the reactor is 1 meter, and the total volume is 1000L. Such as Figure 6 As shown, the two ends of the plate reactor are connected with a set of circulation devices based on Example 1. The circulation device contains two stainless steel pressurized liquid storage tanks with a volume of about 200L, namely the first liquid storage tank (1) and the second liquid storage tank (2), with a diameter of 0.5 meters, a height of 1 meter, and a pressure bearing capacity greater than 0.5 MPa. The top of each liquid storage tank is provided with a second boost port (3) and a second boost port (4), a second pressure release port (5) and a first pressure releas...

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Abstract

The invention belongs to the technical field of a microalgae culture reactor, and particularly relates to a gas-driven algal solution circulating device for microalgae culture and a use method. The invention provides a device for circulating a microalgae culture solution based on gas driving. The device comprises a first solution storage tank and a second solution storage tank, wherein a pressureboost port and a pressure relief port are formed at the top of the first solution storage tank, a pressure boost port and a pressure relief port are formed at the top of the second solution storage tank, solution drain valves and solution inlet valves are arranged at the bottoms of the first solution storage tank and the second solution storage tank, and gas is introduced into the solution storagetanks to boost pressure to serve as drive to realize circulation flow of the algal solution in the solution storage tanks and a closed type main reactor. The device does not adopt mechanical devicessuch as a rotating wheel paddle, so that the cell shear action is avoided. Besides, the solubility of carbon dioxide in the culture solution can be effectively increased in a circulation flow manner of the algal solution, a scouring effect on the side wall of the device is also realized during flow, and the cleaning difficulty is reduced. The arrangement manner of the solution storage tanks is more flexible and the application prospects are good.

Description

technical field [0001] The invention belongs to the technical field of microalgae cultivation reactors, and in particular relates to a gas-driven, closed microalgae cultivation photoreactor algae liquid circulation device and a use method. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Microalgae refers to aquatic planktonic algae capable of photosynthesis. Some microalgae have extremely high economic value and can be used in functional food, food additives, pharmaceuticals, bioenergy and other fields. The current industrial microalgae culture adopts liquid immersion culture, mainly including open culture tank and closed photobioreactor (photobioreactor, PBR) two forms. ...

Claims

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Application Information

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IPC IPC(8): C12M1/00C12M1/36
CPCC12M21/02C12M29/14C12M29/12C12M29/26C12M39/00C12M23/44
Inventor 刘天中王俊峰陈林程文涛周文俊汪辉高莉丽张文蕾刘雯
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI