loop reactor

A loop reactor, photobioreactor technology, applied in photobioreactor, bioreactor/fermenter combination, bioreactor/fermenter for specific purposes, etc., can solve the problem of increasing the complexity of the breeding system and the difficulty of cleaning Large, uneven aeration and other problems, to reduce the cost of manual cleaning, simplify the stirring system, and prevent microalgae from adhering to the wall

Active Publication Date: 2016-04-20
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] a) The realization of gas mixing requires supporting equipment, including pipelines, fans, etc., which increases the complexity of the breeding system and increases investment;
[0007] b) Gas stirring energy utilization rate is low and energy consumption is large;
[0008] c) When gas agitation is used in large-scale reactors, there is a problem of uneven aeration, which may easily cause inadequacy of agitation, resulting in partial adhesion of microalgae and affecting the growth of microalgae;
[0009] d) The existing plate reactor needs to be cleaned manually, which is difficult to clean and has low efficiency;
[0010] e) The existing plate reactor needs to be cleaned after harvesting the algae liquid, prolonging the cycle of microalgae production and low production efficiency;
[0011] f) At present, plate reactors need to arrange aeration pipes along the length of the reactor to replenish carbon dioxide, and the carbon replenishment device is more complicated, and at the same time, it increases the difficulty of cleaning inside the reactor

Method used

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no. 1 example

[0044] figure 1 A schematic structural view of a loop reactor according to a first preferred embodiment of the present invention is shown.

[0045] Such as figure 1 As shown, the loop reactor mainly includes a flexible transparent container 1 , a rigid frame 2 and a stirring box 3 . exist figure 1 In , only the rigid frame in the middle part is shown, and the rigid frames at the corners at both ends are removed to show the flexible transparent container 1 .

[0046] The rigid frame 2 constitutes an inner chamber shaped like a circular racetrack and having a rectangular cross-section. The flexible transparent container 1 also forms an annular racetrack shape roughly consistent with the rigid frame 2 and is accommodated in the inner chamber of the rigid frame 2 , and the cross-sectional shape of the flexible transparent container 1 roughly matches the cross-sectional shape of the inner chamber of the rigid frame 2 .

[0047] exist figure 1 In the shown embodiment, when the ...

no. 2 example

[0070] figure 2 A schematic structural view of a loop reactor according to a second preferred embodiment of the present invention is shown.

[0071] figure 2 The loop reactor of the second preferred embodiment shown with figure 1 The main differences of the loop reactor of the first preferred embodiment shown are: figure 2 The loop reactor of the second preferred embodiment shown is replaced by water pump 4 figure 1 The stirred tank 3 in the loop reactor of the first preferred embodiment is shown.

[0072] Such as figure 2 As shown, the inlet of the water pump 4 communicates with one end of the flexible transparent container 1 , and the outlet communicates with the other end of the flexible transparent container 1 , thereby forming a circulation loop together with the flexible transparent container 1 .

[0073] The following will be based on figure 2 to elaborate figure 2 The installation process of the loop reactor shown:

[0074] 1) Place the rigid frame 2 and ...

no. 3 example

[0082] image 3 A schematic structural view showing the rigid frame 20 of the loop reactor according to the third preferred embodiment of the present invention.

[0083] and figure 1 and figure 2 Compared with the first and second embodiments shown, the image 3 The main differences of the third embodiment shown are: figure 1 and figure 2 The inner cavity of the rigid frame 2 in has a rectangular cross-section, thereby constituting a plate reactor; and image 3 The inner cavity of the rigid frame 20 has a triangular cross-section.

[0084] It should be noted that the cross-sectional shape of the inner cavity of the rigid frame of the present invention is not limited to the illustrated rectangle and triangle, and may also be trapezoidal, circular, regular polygonal or irregular. Meanwhile, in order to match the cross-sectional shape of the inner cavity of the rigid frame, the flexible transparent container should also have a corresponding cross-sectional shape.

[0085...

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PUM

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Abstract

The invention discloses a loop reactor, comprising photobioreactors and a stirring device, wherein the photobioreactors contain a microalgae nutrient solution and form an annular shape, the stirring device is used for stirring the microalgae nutrient solution to allow the microalgae nutrient solution to circularly flow in the annular photobioreactors. According to the invention, since impeller stirring is cooperatively used with an annular runway-like flexible plastic bag to compose a microalgae nutrient solution container, disadvantages of great energy consumption and complex pipeline arrangement of aeration stirring are overcome, and production cost is reduced; a circulation flow loop is composed by the stirring device and the flexible plastic bag, so adherence of microalgae on a wall is effectively prevented, and the problem of difficult cleaning of the reactor is improved.

Description

technical field [0001] The invention relates to the production field of microalgae, in particular to a loop reactor for cultivating microalgae. Background technique [0002] Microalgae can effectively use light energy, CO 2 and inorganic salts to synthesize proteins, fats, carbohydrates and a variety of high value-added bioactive substances, which can be used to produce health food, food additives, feed, biological fertilizers, cosmetics and other natural products through microalgae cultivation. In addition, the production of gene products using algae as hosts has also attracted increasing attention in recent years. With the continuous deepening of human understanding of microalgae, the development and development of new high-efficiency photobioreactors and their application in the high-density cultivation of microalgae have become an important part of microalgae biotechnology. At present, there are mainly two types of photobioreactors for microalgae cultivation: open and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/00C12M1/02
CPCC12M21/02C12M23/02C12M23/26C12M27/18
Inventor 桑俊宝朱振旗郑科陈彦平
Owner ENN SCI & TECH DEV
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