CN213708304U

CN213708304U - Airlift pipeline photobioreactor

Info

Publication number: CN213708304U
Application number: CN202022052005.2U
Authority: CN
Inventors: 孙中亮; 张攀; 梁信志
Original assignee: Xinyang Biyuan Biotechnology Co Ltd
Current assignee: Xinyang Biyuan Biotechnology Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2021-07-16
Anticipated expiration: 2030-09-18

Abstract

The utility model discloses an airlift pipeline photobioreactor, which comprises a reactor bracket, a plurality of front-row vertical pipelines and rear-row vertical pipelines, wherein the front-row vertical pipelines and the rear-row vertical pipelines are same in quantity and are arranged in a staggered manner; the lower parts of the rear vertical pipelines are provided with aeration pipes which are communicated with a pressure air source; the upper ends of the rear vertical pipelines are respectively communicated with the upper parts of the front vertical pipelines in a one-to-one correspondence manner; the lower end of the front-row vertical pipeline is communicated with a front-row bottom pipeline arranged below the front-row vertical pipeline, the lower end of the rear-row vertical pipeline is communicated with a rear-row bottom pipeline arranged below the rear-row vertical pipeline, the front-row bottom pipeline is communicated with the right end of the rear-row bottom pipeline, the left end of the rear-row bottom pipeline is provided with a material inlet and outlet, and a material inlet and outlet valve is arranged at the material inlet and outlet; the top of each front-row vertical pipeline is provided with an exhaust branch pipe, and the exhaust branch pipes are communicated with an exhaust main pipe; the front row of vertical pipelines and the rear row of vertical pipelines as well as the front row of bottom pipelines and the rear row of bottom pipelines are transparent.

Description

Airlift pipeline photobioreactor

Technical Field

The utility model belongs to the technical field of little algae culture apparatus, especially, relate to an airlift pipeline photobioreactor.

Background

Microalgae are a class of photoautotrophic microorganisms that can synthesize organic substances, such as polysaccharides, proteins, lipids, vitamins, etc., through photosynthesis using light energy and carbon dioxide, and these active substances are further used by people to develop health products, foods, and pharmaceuticals. As a pure natural green plant resource, the development of microalgae is receiving more and more attention.

At present, methods for obtaining microalgae biomass mainly comprise two types, one is culture through an open or semi-open raceway pond, and the other is culture through a closed photobioreactor. The runway pool is simple in structure and low in cost, is the most widely used mode, but the culture process is easily polluted in an open environment, and high-quality microalgae cannot be obtained. The closed type photobioreactor is in a pipeline type, a flat plate type, a columnar type and the like, the culture process is controllable due to the relatively closed environment, and the obtained microalgae resources can be further developed into food and medicine resources.

The pipeline type photobioreactor is a closed culture mode which is the most widely applied at present, and the system mainly comprises three parts, namely a horizontal pipeline, a circulating tank and a driving pump. Specifically, liquid flows along the pipeline under the action of the pump, receives natural light or artificial light for photosynthesis, flows for a certain distance and then returns to the circulating tank, gas-liquid exchange is carried out at the circulating tank, dissolved oxygen generated by photosynthesis is removed, carbon dioxide is supplemented, and the liquid is pumped back to the horizontal pipeline by the pump after a certain retention time. The system has the following disadvantages: (1) the occupied area of the horizontal pipeline is large; (2) the microalgae can perform photosynthesis while flowing in the horizontal pipeline, dissolved oxygen in the solution is gradually increased along with the increase of the flowing distance, the photosynthesis is inhibited in the later period, and the length of the pipeline cannot be too long for solving the problem, so that the large-scale culture is limited. (3) Generally, the circulation tank adopts a ton barrel or a stainless steel storage tank, the whole photosynthesis is influenced by weak light or no light, and the volume of the circulation tank accounts for more than one third of the total volume of the whole culture system. (4) The driving force is generally a water pump, the problem of large shearing force exists, and only a few algae species which can bear large shearing force can be cultured in the system.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses a following technical scheme:

an airlift pipeline photobioreactor comprises a reactor bracket, and a plurality of front-row vertical pipelines and rear-row vertical pipelines which are fixed on the reactor bracket, wherein the front-row vertical pipelines and the rear-row vertical pipelines are the same in number and are arranged in a staggered manner; the lower parts of the rear vertical pipelines are provided with aeration pipes which are communicated with an external pressure air source; the upper ends of the rear vertical pipelines are respectively communicated with the upper parts of the front vertical pipelines in front of the rear vertical pipelines in a one-to-one correspondence manner; the lower end of the front-row vertical pipeline is communicated with a front-row bottom pipeline arranged below the front-row vertical pipeline, the lower end of the rear-row vertical pipeline is communicated with a rear-row bottom pipeline arranged below the rear-row vertical pipeline, the front-row bottom pipeline is communicated with the right end of the rear-row bottom pipeline, the left end of the rear-row bottom pipeline is provided with a material inlet and outlet, and the material inlet and outlet is provided with a material inlet and outlet valve; the top of each front-row vertical pipeline is provided with an exhaust branch pipe, and the exhaust branch pipes are communicated with an exhaust main pipe; the front row of vertical pipelines and the rear row of vertical pipelines as well as the front row of bottom pipelines and the rear row of bottom pipelines are transparent.

Further, the height of the front row of vertical pipes is greater than that of the rear row of vertical pipes, and the height difference between the front row of vertical pipes and the rear row of vertical pipes is between 5 centimeters and 20 centimeters.

Further, the diameters of the front row of vertical pipelines and the rear row of vertical pipelines are the same and are both between 5cm and 10 cm; the distance between every two adjacent pipelines in the front row of vertical pipelines and the rear row of vertical pipelines is the same and is between 0.5 and 2 times of the diameter of the pipelines; the longitudinal spacing between the front row of vertical pipes and the rear row of vertical pipes is between 1 and 2 times the pipe diameter.

Further, the gas content in the rear row of vertical pipes is between 0.05vvm and 0.2 vvm.

Further, a pH meter and a turbidimeter are arranged on the front row bottom pipeline.

The utility model has the advantages that:

1. the airlift pipeline photobioreactor of the utility model mainly promotes the liquid to circulate in the pipeline by the gas driving force, thereby reducing the shearing force; meanwhile, dissolved oxygen generated by photosynthesis can be removed in time through the micro bubbles, gas-liquid exchange is continuously carried out in the culture solution, the dissolved oxygen is removed in time, carbon dioxide is supplemented in time, and the photosynthesis efficiency is improved; 2. furthermore, the utility model discloses a system's pipeline is vertical pipeline, and area is little, does not have the circulation jar unit, does not have photosynthetic blind area, is favorable to improving the holistic photosynthesis of system. 3. The front-row vertical pipelines and the rear-row vertical pipelines of the utility model are arranged in a staggered way, so that the front-row vertical pipelines and the rear-row vertical pipelines can both receive illumination; the method does not adopt a power pump with high shearing force, and can be suitable for large-scale culture of more algae. Easier to clean than horizontal pipes.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a rear view of the present invention;

FIG. 3 is a view from the A-A direction of the present invention;

reference numerals: 1-a reactor frame; 2-front row of vertical pipes; 3-rear row of vertical pipelines; 4-an exhaust branch pipe; 5-an exhaust manifold; 6-pH meter; 7-turbidimeter; 8-a feed/discharge valve; 9-an aerator pipe; 10-front row bottom pipes; 11-rear row bottom pipe.

Detailed Description

The technical solution of the present invention will be described below with reference to the accompanying drawings and examples, as shown in fig. 1-3, the present invention relates to an airlift pipeline photobioreactor, which includes a reactor frame 1, and a plurality of front vertical pipelines 2 and rear vertical pipelines 3 fixed on the reactor frame 1, wherein the front vertical pipelines 2 and the rear vertical pipelines 3 are the same in number and are arranged in a staggered manner; the lower parts of the rear-row vertical pipelines 3 are provided with aeration pipes 9, the aeration pipes 9 are communicated with an external pressure air source, the pressure air source is a mixed air source consisting of compressed air at an outlet of an air compressor and carbon dioxide at an outlet of a carbon dioxide steel cylinder, and the content of the carbon dioxide in the mixed air source is 5%. The upper ends of the rear vertical pipelines 3 are respectively communicated with the upper parts of the front vertical pipelines 2 in front of the rear vertical pipelines in a one-to-one correspondence manner; the lower end of the front-row vertical pipeline 2 is communicated with a front-row bottom pipeline 10 arranged below the front-row vertical pipeline, the lower end of the rear-row vertical pipeline 3 is communicated with a rear-row bottom pipeline 11 arranged below the rear-row vertical pipeline, the front-row bottom pipeline 10 is communicated with the right end of the rear-row bottom pipeline 11, the left end of the rear-row bottom pipeline 11 is provided with a feeding and discharging port, and the feeding and discharging port is provided with a feeding and discharging valve 8; the top of each front-row vertical pipeline 2 is provided with an exhaust branch pipe 4, and the exhaust branch pipes 4 are communicated with an exhaust main pipe 5; the front row of vertical pipes 2 and the rear row of vertical pipes 3, and the front row of bottom pipes 10 and the rear row of bottom pipes 11 are transparent.

The height of the front row of vertical pipelines 2 is greater than that of the rear row of vertical pipelines 3, and the height difference between the front row of vertical pipelines and the rear row of vertical pipelines is 10 centimeters. The diameters of the front row of vertical pipelines 2 and the rear row of vertical pipelines 3 are the same and are both 8 cm; the distance between every two adjacent pipelines in the front row of vertical pipelines 2 and the rear row of vertical pipelines 3 is the same, and the distance is 1.5 times of the diameter of the pipelines, namely 12 cm; the distance between the front row of vertical pipes 2 and the rear row of vertical pipes 3 is 1.5 times of the pipe diameter, namely 12 cm. The gas content in the rear vertical duct 3 was 0.15 vvm.

And a pH meter 6 and a turbidimeter 7 are arranged on the front-row bottom pipeline 10.

The working principle is as follows: the aeration pipe of the rear vertical pipeline is communicated with an external pressure air source, the liquid density is reduced and the volume is increased due to a certain air content, and the liquid of the rear vertical pipeline enters the front vertical pipeline from the upper end; gas is exhausted from an exhaust hole at the top end of the front-exhaust vertical pipeline; meanwhile, the front-row vertical pipelines have high density, liquid flows downwards, and the liquid returns to the rear-row vertical pipelines due to the fact that the front-row bottom pipelines and the rear-row bottom pipelines at the lower ends are communicated, and therefore the liquid flows circularly.

Claims

1. An airlift pipeline photobioreactor is characterized in that: the device comprises a reactor support (1), and a plurality of front-row vertical pipelines (2) and rear-row vertical pipelines (3) which are fixed on the reactor support (1), wherein the front-row vertical pipelines (2) and the rear-row vertical pipelines (3) are the same in quantity and are arranged in a staggered manner; the lower parts of the rear vertical pipelines (3) are provided with aeration pipes (9), and the aeration pipes (9) are communicated with an external pressure air source; the upper ends of the rear vertical pipelines (3) are respectively communicated with the upper parts of the front vertical pipelines (2) in front of the rear vertical pipelines in a one-to-one correspondence manner; the lower end of the front-row vertical pipeline (2) is communicated with a front-row bottom pipeline (10) arranged below the front-row vertical pipeline, the lower end of the rear-row vertical pipeline (3) is communicated with a rear-row bottom pipeline (11) arranged below the rear-row vertical pipeline, the front-row bottom pipeline (10) is communicated with the right end of the rear-row bottom pipeline (11), the left end of the rear-row bottom pipeline (11) is provided with a material inlet and outlet, and the material inlet and outlet is provided with a material inlet and outlet valve (8); the top of each front-row vertical pipeline (2) is provided with an exhaust branch pipe (4), and the exhaust branch pipes (4) are communicated with an exhaust main pipe (5); the front row of vertical pipelines (2) and the rear row of vertical pipelines (3) as well as the front row of bottom pipelines (10) and the rear row of bottom pipelines (11) are transparent.

2. An airlift tubular photobioreactor as recited in claim 1, further comprising: the height of the front row of vertical pipelines (2) is greater than that of the rear row of vertical pipelines (3), and the height difference between the front row of vertical pipelines and the rear row of vertical pipelines is 5 cm-20 cm.

3. An airlift tubular photobioreactor as recited in claim 1, further comprising: the diameters of the front row of vertical pipelines (2) and the rear row of vertical pipelines (3) are the same and are both between 5cm and 10 cm; the distance between every two adjacent pipelines in the front row of vertical pipelines (2) and the rear row of vertical pipelines (3) is the same, and the distance is 0.5-2 times of the diameter of the pipelines; the distance between the front row of vertical pipelines (2) and the rear row of vertical pipelines (3) is 1 to 2 times of the diameter of the pipelines.

4. An airlift tubular photobioreactor as recited in claim 1, further comprising: the gas content in the rear row of vertical pipes (3) is between 0.05vvm and 0.2 vvm.

5. An airlift tubular photobioreactor as recited in claim 1, further comprising: and a pH meter (6) and a turbidimeter (7) are arranged on the front row bottom pipeline (10).