CN217838976U - Closed open-air photobioreactor - Google Patents
Closed open-air photobioreactor Download PDFInfo
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- CN217838976U CN217838976U CN202221278019.9U CN202221278019U CN217838976U CN 217838976 U CN217838976 U CN 217838976U CN 202221278019 U CN202221278019 U CN 202221278019U CN 217838976 U CN217838976 U CN 217838976U
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Abstract
The utility model discloses a closed open-air photoreactor, include: a barrel body and a spraying cooling mechanism; the spraying cooling mechanism is arranged around the outer wall of the barrel body; the barrel body is made of a material with light transmittance; the reactor also includes a water inlet and outlet mechanism, the water inlet and outlet mechanism including: a water inlet pipe, an output pipe, a blow-off pipe and an upper drain pipe; the reactor further comprises an air intake and exhaust mechanism, wherein the air intake and exhaust mechanism comprises: an air inlet pipe, an air dispersing head and an exhaust pipe; the stability and scale of microalgae culture in high-temperature seasons and southern areas are realized, and the construction cost and the operation energy consumption of the photobioreactor can be reduced.
Description
Technical Field
The utility model relates to the technical field of biology, especially, relate to a closed open-air photobioreactor.
Background
Microalgae are generally unicellular or colony lower plants which are subjected to photosynthesis, have unique biological characteristics and important ecological functions, are widely applied to the aspects of biological pharmacy, nutriments, health products, natural food processing, biological baits, biological fertilizers, sewage treatment, renewable energy production and the like, and have important economic and ecological values.
Many microalgae are rich in bioactive substances with high added values, have extremely important effects on human beings and aquatic offspring seed industry, but have slower industrialization process. At present, the production of high-end health care products and additives is mainly focused. Therefore, how to break through the low-cost and high-density culture technology of microalgae is the key to market of microalgae biological products.
In a broad sense, the apparatus for microalgae cultivation may be generally referred to as a photobioreactor, and there are mainly two types, open type and closed type. The open type photobioreactor has the advantages of simple structure, easy amplification, low cost and the like, and is widely applied to large-scale culture of microalgae. However, the open type photobioreactor occupies a large area, and the culture area has a small specific surface area, so that the light energy and carbon dioxide utilization rate is low, the open type photobioreactor is very easy to pollute, and the temperature and light condition control capability is poor. In both outdoor and indoor environments, even chlorella with strong viability has low success rate of open-type pure culture in south China and high-temperature seasons.
Compared with an open type photobioreactor, the closed type photobioreactor is not easy to pollute, can realize pure culture, and has controllable culture conditions, high culture density and high culture efficiency. However, the existing closed photo-bioreactor generally has defects of different degrees in design, namely, the investment and operation cost is high, the monomer is small and the combination is difficult to expand, and the existing closed photo-bioreactor generally uses thin film materials in order to save the cost, so that the existing closed photo-bioreactor is difficult to clean, is easy to damage and cannot be reused.
Due to the reasons, the existing closed photobioreactor can not meet the requirement of large-scale production of microalgae in practical application, and therefore, a closed photobioreactor which is efficient, low in cost, easy to assemble and operate and capable of realizing large-scale production of microalgae is urgently needed to meet the requirement of human beings and aquatic offspring seed industry.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior art, the utility model aims at providing a large-scale, closed photo-bioreactor which can be used in the open air, which has the characteristics of high culture efficiency, low culture cost, easy assembly, simple operation and the like, and is used for realizing the large-scale, low-cost and high-density pure microalgae culture.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a closed open-air photobioreactor, include: a barrel body and a spraying cooling mechanism; the spraying and cooling mechanism is arranged around the outer wall of the barrel body.
The barrel body is made of a material with light transmittance.
The reactor also includes a water inlet and outlet mechanism, the water inlet and outlet mechanism including: water inlet pipe, output pipe, blow-off pipe, upper drainage pipe.
The bottom of the barrel body adopts a conical bottom structure, and the lowest part of the bottom of the barrel body is connected with an output pipe.
The head end of the blow-off pipe is connected to the middle pipe body of the output pipe through a tee joint, the tail end of the output pipe is provided with an output valve, and the tail end of the blow-off pipe is provided with a blow-off valve.
The water inlet pipe is arranged at the top of the barrel body, the tail end of the water inlet pipe is connected with the barrel wall at the top of the barrel body through a flange, and a water inlet valve is arranged on the pipe body.
The reactor further comprises an air intake and exhaust mechanism, wherein the air intake and exhaust mechanism comprises: air inlet pipe, air dispersing head, exhaust pipe.
The barrel is characterized in that a barrel cover is hermetically connected above the barrel body, the air inlet pipe penetrates through the barrel cover to be divided into an outer air inlet pipe outside the barrel body and an inner air inlet pipe inside the barrel body, the bottom end of the inner air inlet pipe is connected with an air dispersing head, the air dispersing head is arranged at the bottom position inside the barrel body, and air dispersing holes are distributed in the downward bottom surface of the air dispersing head.
The upper drainage pipe is arranged at the highest position of the reactor and is of an inverted U-shaped structure;
an air inlet valve is arranged on the outer air inlet pipe body, and one end of the upper water discharge pipe is connected to the pipe body between the upper air inlet valve of the outer air inlet pipe and the barrel cover; an upper drainage valve is arranged on the upper drainage pipe.
The spraying cooling mechanism comprises a spraying pipe, and the spraying pipe is annularly arranged around the outer wall of the barrel body; and the spray pipe is provided with a water spray hole.
The utility model has the advantages that:
(1) The photobioreactor can be placed in the open air, so that the solar radiation is fully utilized to carry out algae culture and increment, and the energy consumption of the traditional closed photobioreactor is reduced.
(2) The single container of the photobioreactor can be amplified step by step, and the large-scale production of microalgae is convenient.
(3) The photobioreactor adopts the totally enclosed system design, simplifies the internal structure, thereby realizing no dead angle type disinfection and being convenient for cleaning.
(4) The photo-bioreactor can realize the controllable culture of microalgae factors.
(5) The photobioreactor adopts an airlift algae liquid circulation mode, utilizes an external cold water spraying mode to cool, further reduces energy consumption, and greatly saves culture cost.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
FIG. 1 is a schematic view of the overall structure of the photobioreactor according to the present invention;
FIG. 2 is a cross-sectional view of the shell of the photobioreactor according to the present invention;
FIG. 3 is a schematic view of the gas dispersing head of the photobioreactor according to the present invention;
the device comprises a barrel body 1, a barrel body 2, a barrel cover 3, an outer air inlet pipe 4, an air inlet valve 5, an upper drainage pipe 6, an exhaust pipe 7, a one-way valve 8, an exhaust valve 9, an inner air inlet pipe 10, an air dispersing head 11, a submarine light cable 12, a submarine biological lamp 13, an inlet pipe 14, an inlet valve 15, an outlet pipe 16, an output valve 17, a blow-down valve 18, a sampling pipe 19, a sampling valve 20, a temperature sensor 21, a spray pipe 22, a flange 23, a split shell 24, an air dispersing hole 25, a blow-down pipe 26, a branch pipe 27, a joint 28 and an upper drainage valve.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention as it relates to the structure, function and operation of the bioreactor and reaction system.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
And the terms in the present invention can be understood to have the specific meanings of the present invention according to the specific situation, and can not be understood as the limitation of the present invention, for those skilled in the art.
The first embodiment is as follows:
the following detailed description is made in conjunction with the accompanying drawings and detailed description:
as shown in fig. 1, the present embodiment provides an enclosed open-air photobioreactor including: staving (1), air inlet and outlet mechanism, water inlet and outlet mechanism, spraying cooling mechanism, inside light filling mechanism, temperature sensor.
Staving (1) adopts the plastics material that has the light transmissivity, includes: white, red or blue plastic material.
The top of the barrel body (1) is provided with a barrel cover (2), the barrel cover (2) is fixedly connected with the barrel body (1) through a sealing structure, and preferably, the sealing structure adopts a screwing sealing mode.
The barrel body (1) is of a cylindrical or polygonal cylinder structure, the bottom of the barrel body is of a flat bottom structure or a conical bottom structure, and in the embodiment, the bottom of the barrel body (1) is of a conical bottom structure; the volume of the barrel body (1) is between 0.3 and 20 tons.
The intake and exhaust mechanism includes: the air-distributing device comprises an outer air inlet pipe (3), an air inlet valve (4), an inner air inlet pipe (9), an air-distributing head (10), an air outlet pipe (6), a one-way valve (7) and an air outlet valve (8).
The outer air inlet pipe (3) and the exhaust pipe (6) penetrate through the barrel cover (2) and are connected with the barrel cover (2) through the flange (22), so that sealing is realized without water leakage and air leakage.
The air diffusing head (10) comprises a branch pipe (26) and a joint (27), and air diffusing holes (24) are distributed on the downward bottom surfaces of the branch pipe (26) and the joint (27); the air dispersing holes (24) are arranged in rows at intervals, the distance is 10-50 mm, and the diameter is 0.5-2 mm; a plurality of branch pipes (26) are radially fixed around the joint (27), and the tail ends of the branch pipes (26) radiating outwards are plugged; the air dispersing head (10) is fixedly connected to the bottom of the air inlet pipe through a connector (27), so that the air dispersing head (10) is arranged at the center of the bottom in the barrel body (1), and air and accumulated liquid in the air inlet and outlet mechanism are effectively discharged through the air dispersing holes (24).
When the air inlet and exhaust mechanism operates, purified air and carbon dioxide are filled into the center of the bottom of the barrel body (1) through the air dispersing head (10), continuously ascending bubble algae liquid continuously surges upwards from the center of the bottom in the closed open-air photobioreactor, ascends to the top and disperses to the periphery, and the upper algae liquid is pushed to flow downwards along the annular barrel wall on the inner side of the barrel body (1), so that the water body circulation of the algae liquid from the center to the periphery from bottom to top in the closed open-air photobioreactor is realized; meanwhile, oxygen generated by photosynthesis of the microalgae in the algae liquid can be released in the aeration process and is discharged out of the barrel body (1) through the exhaust pipe (6), so that the inhibition effect of redundant oxygen on proliferation of the microalgae is avoided.
The exhaust pipe (6) is in an inverted U shape, and the tail end of the exhaust pipe, which is positioned outside the barrel body (1), is sequentially connected with a one-way valve (7) and an exhaust valve (8); preferably, the one-way valve (7) is a duckbill valve, and the exhaust valve (8) is a ball valve.
When the air inlet and exhaust mechanism operates, the exhaust valve (8) is normally opened, continuous exhaust is realized due to micro-positive pressure in the barrel body (1), and the inverted U-shaped structures of the check valve (7) and the exhaust pipe (6) can prevent external water and gas from invading the barrel body (1).
The water inlet and outlet mechanism comprises: the device comprises a water inlet pipe (13), a water inlet valve (14), a sampling pipe (18), a sampling pipe valve (19), an output pipe (15), an output valve (16), a blow-off pipe (25), a blow-off valve (17), an upper drain pipe (5) and an upper drain valve (25).
The tail end of the water inlet pipe (13) is connected with the top barrel wall of the barrel body (1) through a flange (22), so that sealing without water leakage and air leakage is realized; the sampling tube (18) penetrates through the middle lower part of the side wall of the barrel body (1) and is connected with the side wall of the barrel body (1) through a flange (22), so that sealing is realized without water leakage and air leakage; the part of the sampling pipe (18) arranged outside the barrel body (1) is provided with a sampling valve (19).
The output pipe (15) is arranged at the lowest part of the bottom of the barrel body (1) and is connected with the lowest part of the bottom of the barrel body (1) through a flange (22), so that sealing without water leakage and air leakage is realized; the sewage discharge pipe (25) is connected to the middle pipe body of the output pipe (15) through a tee joint, the tail end of the output pipe (15) is provided with an output valve (16), and the tail end of the sewage discharge pipe (25) is provided with a sewage discharge valve (17); when the waste liquid is discharged, the output valve (16) is closed, and then the drain valve (17) is opened to drain the water.
The upper drainage pipe (5) is arranged at the highest position of the closed open-air photobioreactor and is arranged in an inverted U shape, one end of the upper drainage pipe is arranged at the rear side of the air inlet valve (4) on the outer air inlet pipe (3), and the upper drainage pipe (5) is provided with an upper drainage valve (28). When the closed open-air photobioreactor is disinfected, the upper drainage valve (28) is opened, seawater or fresh water containing disinfectant is slowly added into the barrel body (1) until disinfectant water flows out from the upper drainage pipe (5), and then the upper drainage valve (28) is closed, so that the interior of the closed open-air photobioreactor is completely and hermetically soaked in the disinfectant water; the inverted U-shaped structure of the upper drainage pipe (5) and the upper drainage valve (28) can prevent liquid such as external rainwater from invading the closed open-air photobioreactor.
The internal light supplementing mechanism comprises 2-4 groups of diving biological lamp groups, and the diving biological lamp groups are combined by adopting diving biological lamps (12) with various specifications; preferably, the diving biological lamp (12) adopts a red light, blue light and full spectrum LED lamp; the power of the single-group diving biological lamp group is 500 to 3000 watts; the diving biological lamp (12) is connected with an external controller through a diving lamp cable (11), and the diving lamp cable (11) penetrates through the top barrel wall of the barrel body (1) through a gland head.
The spraying cooling mechanism sequentially and downwards surrounds the outer wall of the barrel body (1) from the top of the barrel body (1) to form annular spraying pipes (21), the distance between every two adjacent spraying pipes (21) is 10-300 mm, water spraying holes are formed in rows in the spraying pipes (21), the interval between every two adjacent water spraying holes is 1-30 mm, when the spraying cooling mechanism operates, the spraying pipes (21) are connected with underground water or connected with a water cooler, and the spraying pipes are continuously used for spraying cold water to the outer wall of the barrel body (1) through the water spraying holes, so that a water curtain is formed for cooling the closed type open-air photobioreactor.
The temperature sensor (20) is arranged inside the barrel body (1) and is connected with an external controller through a transmission line so as to continuously monitor the temperature of the culture algae liquid, and the transmission line penetrates through the barrel wall at the top of the barrel body (1) through a Glan head.
Compared with the prior art, closed open-air photobioreactor provides a large-scale closed photobioreactor that is suitable for open-air placing on the basis of comprehensive analysis photobioreactor design principle to realize little algae's low-cost high density cultivation. The outstanding technical characteristics are as follows: the large-scale totally-enclosed photobioreactor has a monomer volume of 0.3 to 20 cubic meters, is isolated from the outside in the whole operation process, and can avoid pollution to the maximum extent; secondly, the open-air solar radiation is fully utilized to greatly reduce the energy consumption, thereby realizing the low-cost operation; thirdly, the algae liquid in the closed open-air photobioreactor is quickly circulated by using an air lift mode, so that light-dark conversion is realized, and the problems of long light path and strong light damage are solved; fourthly, the temperature of the algae liquid is kept within the temperature range suitable for the growth of the microalgae by adopting an external cold water spraying and cooling mode, so that a complex cooling component in the conventional photosynthetic reactor is simplified, and cooling liquid is not required, thereby avoiding the leakage pollution risk of the cooling liquid, reducing the burden of cleaning and disinfecting the photobioreactor, and reducing the refrigeration cost of the photosynthetic reactor; fifthly, a submersible LED biological lamp is used and immersed in the algae liquid in the closed open photobioreactor for illumination and light supplement, the light energy is utilized to the maximum extent, the reactor is mainly used for keeping algae proliferation when the sunshine is lacked in continuous rainy days, the reactor can be lightened at night when necessary, and continuous illumination is used for promoting the maximum proliferation of microalgae.
To sum up, the utility model discloses a stability, the scale of little algae cultivation in high temperature season and south area can also reduce photobioreactor's construction cost and operation energy consumption simultaneously.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A closed open-air photobioreactor, comprising: a barrel body and a spraying cooling mechanism; the spraying cooling mechanism is arranged around the outer wall of the barrel body; the barrel body is made of a material with light transmittance;
the reactor still includes into drainage mechanism, the drainage mechanism that advances includes: a water inlet pipe, an output pipe, a blow-off pipe and an upper drain pipe;
the reactor further comprises an air intake and exhaust mechanism, wherein the air intake and exhaust mechanism comprises: air inlet pipe, air dispersing head, exhaust pipe.
2. The closed type open-air bioreactor as claimed in claim 1, wherein the bottom of the barrel body is of a conical bottom structure, and the lowest part of the bottom of the barrel body is connected with the output pipe.
3. The closed open-air photobioreactor according to claim 2, wherein the head end of the sewage pipe is connected to the middle pipe body of the output pipe through a tee joint, the tail end of the output pipe is provided with an output valve, and the tail end of the sewage pipe is provided with a sewage valve.
4. The closed type open-air bioreactor as claimed in claim 1, wherein the water inlet pipe is arranged at the top of the barrel body, the end of the water inlet pipe is connected with the barrel wall at the top of the barrel body through a flange, and a water inlet valve is arranged on the pipe body.
5. The closed type open-air bioreactor according to claim 1, wherein a barrel cover is hermetically connected above the barrel body, the air inlet pipe penetrates through the barrel cover, so that the air inlet pipe is divided into an outer air inlet pipe outside the barrel body and an inner air inlet pipe inside the barrel body, the bottom end of the inner air inlet pipe is connected with an air dispersing head, the air dispersing head is arranged at the bottom position inside the barrel body, and air dispersing holes are distributed on the downward bottom surface of the air dispersing head.
6. The closed type open-sky light bioreactor as claimed in claim 5, wherein the upper drainage pipe is arranged at the highest position of the reactor and has an inverted U-shaped structure;
an air inlet valve is arranged on the outer air inlet pipe body, and one end of the upper water discharge pipe is connected to the pipe body between the upper air inlet valve of the outer air inlet pipe and the barrel cover; an upper drain valve is arranged on the upper drain pipe.
7. The closed type open-air bioreactor according to claim 1, wherein the spray cooling mechanism comprises spray pipes which are annularly arranged around the outer wall of the barrel body; and the spray pipe is provided with a water spray hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221278019.9U CN217838976U (en) | 2022-05-24 | 2022-05-24 | Closed open-air photobioreactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221278019.9U CN217838976U (en) | 2022-05-24 | 2022-05-24 | Closed open-air photobioreactor |
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| Publication Number | Publication Date |
|---|---|
| CN217838976U true CN217838976U (en) | 2022-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221278019.9U Active CN217838976U (en) | 2022-05-24 | 2022-05-24 | Closed open-air photobioreactor |
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| CN (1) | CN217838976U (en) |
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- 2022-05-24 CN CN202221278019.9U patent/CN217838976U/en active Active
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