CN110777054A - Controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon fixation efficiency - Google Patents
Controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon fixation efficiency Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 23
- 238000005520 cutting process Methods 0.000 claims abstract description 113
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 12
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- 230000000087 stabilizing effect Effects 0.000 claims description 6
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 102000003846 Carbonic anhydrases Human genes 0.000 description 1
- 108090000209 Carbonic anhydrases Proteins 0.000 description 1
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- 230000009056 active transport Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
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- 238000009792 diffusion process Methods 0.000 description 1
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Abstract
The invention discloses a controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon fixation efficiency, which comprises a reactor, an air chamber, an air bubble generator and a flow dispersion rotary aeration device, wherein the reactor is provided with a gas inlet and a gas outlet; the reactor is positioned on the upper side of the air chamber, and the bubble generator is arranged in the air chamber and comprises eight claw pipes, a water pump and a Venturi tube; the Venturi tube is connected with a connecting pipeline, and the connecting pipeline extends out of the air chamber and then is connected with a hose; the hose is connected with a bubble conveying pipe, and the bubble conveying pipe extends into the reactor; the flow-dispersing rotary-type cloth exposure device comprises a motor, a transmission shaft and a cutting device; the cutting device comprises three layers of cutting disks which are arranged at intervals and sleeved on the lower portion of the transmission shaft, and a plurality of protruding thorns are arranged on the lower side of the upper layer of cutting disk and the upper and lower sides of the middle cutting disk and the lower layer of cutting disk. The invention canCO
2The formed bubbles have smaller volume and are uniformly distributed, so that the carbon fixation and mass transfer efficiency of the microalgae is greatly improved, and the energy-saving and emission-reducing concepts are greatly enriched.
Description
Technical Field
The invention relates to the technical field of microalgae cultivation, in particular to a controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon fixation efficiency.
Background
Due to the large development of the human industry, CO is discharged as greenhouse gas
2Has caused the problem of global warming to become more serious, the global temperature is rising continuously and is enough to influence the key of global species survival, so how to reduce the emission of greenhouse gases is a common target in the world.
The microalgae has high growth speed and is easy to be cultured in large scale, and the microalgae biomass is utilized to absorb CO
2Have been used in engineering applications. Microalgae utilizing CO
2The two forms are one of CO dissolved in solution
2The molecule enters the algal cell by direct diffusion, and the other is CO
2Conversion of molecules to HCO by extracellular carbonic anhydrase catalysis
3Entering the cell by active transport and decomposing again intracellularly to CO
2Can be used for photosynthesis of microalgae.
Conventional microalgae photobioreactor is mainly prepared by introducing CO
2Into a microalgae solution, but in CO
2In the process of introducing the microalgae solution, the problems of different sizes and uneven distribution of bubbles exist, so that the CO is greatly reduced
2Utilization ratio of (2); causes the defects of uneven mixing, difficult control of culture conditions and the like in the reactor, and influences the growth, the light energy utilization rate, the carbon sequestration efficiency of the microalgae and the like.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, the present invention is directed to solving the problems of CO
2The formed bubbles are not uniform in size and distribution, causingThe problems of slow growth of microalgae, low light energy utilization rate and low carbon fixing efficiency of microalgae are solved, and the controllable turbulent flow type microalgae culture device capable of effectively improving the carbon fixing efficiency is provided.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows: a controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon fixation efficiency is characterized in that: comprises a reactor, a gas chamber, a bubble generator and a dispersed flow rotary type cloth aerator; the reactor is of an open structure with an open upper part, the gas chamber is of a closed box structure, and the reactor is positioned on the upper side of the gas chamber and is fixedly connected with the gas chamber; one side of the air chamber is provided with an air inlet pipe communicated with the air chamber, and one end of the air inlet pipe connected with the air chamber is provided with a pressure stabilizing valve; the top of the gas chamber is provided with a gas outlet pipe, the lower end of the gas outlet pipe is communicated with the gas chamber, the upper end of the gas outlet pipe extends into the reactor, the upper end of the gas outlet pipe is provided with a one-way valve, and only gas in the gas chamber can enter the reactor through the one-way valve;
the bubble generator is arranged in the air chamber and comprises eight claw pipes, a water pump and a Venturi pipe; the eight-claw pipe comprises a main pipe and eight branch pipes connected with the same end of the main pipe, the water inlet end of the water pump is communicated with the bottom of the reactor through a liquid inlet pipe, and the water outlet end of the water pump is communicated with one end of the main pipe of the eight-claw pipe; the branch pipes are uniformly distributed around the main pipe for one circle, one end of each branch pipe is communicated with the other end of the main pipe, and the other end of each branch pipe is connected with one end of the venturi pipe; the other end of the Venturi tube is respectively connected with one end of a connecting pipeline, and the other end of the connecting pipeline extends out of the air chamber and then is connected with one end of a hose; the other end of the hose is connected with one end of a bubble conveying pipe, and the other end of the bubble conveying pipe inclines upwards and then extends into the reactor;
the flow-dispersing rotary-type cloth exposure device comprises a motor, a transmission shaft and a cutting device; the motor is arranged above the reactor and is fixedly connected with the reactor through a plurality of supporting rods, and a motor shaft of the motor is arranged vertically downwards; the upper end of the transmission shaft is fixedly connected with a motor shaft, the lower end of the transmission shaft extends into the reactor and is positioned above the upper end of the bubble conveying pipe; the cutting device comprises three layers of cutting disks which are arranged at intervals and sleeved at the lower part of the transmission shaft, a plurality of through holes are formed in the cutting disks, the upper layer of cutting disk and the lower layer of cutting disk are rotatably connected with the transmission shaft through bearings, and the middle cutting disk is fixedly connected with the rotating shaft; the cutting discs are of bowl-shaped structures with large upper parts and small lower parts, and a plurality of convex thorns are arranged on the lower side of the upper-layer cutting disc and the upper and lower sides of the middle cutting disc and the lower-layer cutting disc; the upper end of the air outlet pipe is positioned right below the middle part of the lower cutting disc.
Furthermore, a bias flow type bubble cutting pipe is also arranged on the upper side of the part of the bubble conveying pipe extending into the counter-inducer, one end of the bias flow type bubble cutting pipe is communicated with the bubble conveying pipe, and the other end of the bias flow type bubble cutting pipe is inclined upwards to one side direction of the reactor and extends to the lower side of the lower layer cutting disc; the upper side of the upper part of the bias flow type bubble cutting pipe is an open structure to form an open section, and a plurality of convex thorns are also arranged on the lower side of the open section.
Further, the upper end of the bubble conveying pipe is positioned below the lower-layer cutting disc and close to the middle of the lower side of the lower-layer cutting disc.
Further, the bubble conveying pipes are uniformly distributed around the reactor.
Furthermore, the convex thorns on the upper layer cutting disc, the middle cutting disc and the lower layer cutting disc are uniformly distributed on the circumference of the same axial lead with the transmission shaft, and the convex thorns between the two adjacent layers of cutting discs are alternately distributed along the radial direction of the cutting discs.
Compared with the prior art, the invention has the following advantages:
1. the reactor in the device adopts a mode of combining an eight-claw pipe-based bubble generator and a (bubble) cutting device-based flow-dispersing rotary-type cloth aerator, so that the size of bubbles can be better controlled, and smaller and more uniform bubble groups can be obtained; thereby greatly improving the CO content of the microalgae
2Utilization ratio of (2); the growth of the microalgae is faster, the light energy utilization rate and the carbon sequestration efficiency of the microalgae are higher; and effectively relieves the energy crisis and produces biological energy.
2. The effluent of the bubble generator with the eight-claw tube structure can drive the algae liquid to circulate to achieve a micro-dynamic processSo that all parts of the microalgae can uniformly absorb light energy to achieve higher light energy utilization rate and CO
2The utilization ratio of (2).
3. The flow-dispersing rotary-type cloth aerator in the reactor is provided with three layers of cutting discs, and the cutting discs are provided with convex thorns, so that gas can form bubble groups with uniform size and uniform distribution in the solution, and the bubble groups are fully and uniformly contacted with the algae liquid and are beneficial to the growth of microalgae; higher-quality microalgae can be obtained through a better mixing effect, and the utilization of later biomass energy is facilitated; the rotation of the middle cutting disc of the three-layer structure of the flow scattering rotary type cloth exposer increases the rotation angular velocity of the bubble micro-cluster, so that the tangential stress borne by the bubble is increased, and the pressure on the surface of the bubble is increased, so that the diameter of the bubble can be effectively reduced; make the bubble cut many times, and not only can effectively reduce the bubble diameter through rotating and can make algae liquid and bubble contact more abundant simultaneously, strengthen the vortex when playing the stirring effect, reduce the coalescence of bubble to the time that the bubble rises has been prolonged, greatly improved little algae reaction's mass transfer efficiency and solid carbon efficiency, demonstrate splendid economic nature again simultaneously.
3. The device is integrally unified and stable, each part is clearly and reasonably divided, and the effect of 'performing the other' is achieved, the whole system device can move parts such as a Venturi tube, a bias flow type bubble cutting tube, a dispersed flow rotary type exposure device, a pressure stabilizing valve and the like to work together, the functions of all the parts are maximized, and the specific effect can be summarized as 'one mass transfer, two foaming and three expansion four cutting'; greatly improves the carbon fixation and mass transfer efficiency of the microalgae, and is rich in the concept of energy conservation and emission reduction.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a reactor 1, a gas chamber 2, a gas inlet pipe 3, a check valve 4, an eight-claw pipe 5, a water pump 6, a Venturi tube 7, a hose 8, a bubble conveying pipe 9, a motor 10, a transmission shaft 11, a cutting disc 12, a convex thorn 13 and a bias flow type bubble cutting pipe 14.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
Example (b): referring to fig. 1, a controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon fixation efficiency comprises a reactor 1, a gas chamber 2, a bubble generator and a dispersed flow rotary aeration device. The reactor 1 is of an open structure with an open upper part, the gas chamber 2 is of a closed box structure, and the reactor 1 is positioned on the upper side of the gas chamber 2 and is fixedly connected with the gas chamber 2; during manufacturing, the reactor 1 is of a cylindrical structure made of transparent materials, so that the reactor 1 also has the advantages of easiness in monitoring and controlling culture conditions and the like, and the device is more convenient to inspect and maintain. An air inlet pipe 3 communicated with the air chamber 2 is arranged at one side of the air chamber 2, and a pressure stabilizing valve is arranged at one end of the air inlet pipe 3 connected with the air chamber 2; the pressure stabilizing valve is arranged, so that the internal pressure of the reactor 1 can be kept stable, the reactor 1 is prevented from being cracked and wasted, and the service life of the device is prolonged. The top of the gas chamber 2 is provided with a gas outlet pipe, the lower end of the gas outlet pipe is communicated with the gas chamber 2, the upper end of the gas outlet pipe extends into the reactor 1, the upper end of the gas outlet pipe is provided with a one-way valve 4, and only gas in the gas chamber 2 can enter the reactor 1 through the one-way valve 4. During specific implementation, the one-way valve 4 is an air pressure valve with a self-adjusting function, so that automatic adjustment of the bubble rate is realized, constant air pressure is achieved, and meanwhile, the size and the rate of the bubble outlet can be effectively and automatically controlled to ensure that CO required by bubbles and algae liquid
2And (4) matching. In the working process, a microalgae culture solution is injected into the reactor 1, and then CO-containing gas is introduced into the gas chamber 2
2For microalgae cultivation and CO
2And (4) removing.
The bubble generator is arranged in the air chamber 2 and comprises an eight-claw pipe 5, a water pump 6 and a Venturi tube 7. The eight-claw pipe 5 comprises a main pipe and eight branch pipes connected with the same end of the main pipe, the water inlet end of the water pump 6 is communicated with the bottom of the reactor 1 through a liquid inlet pipe, and the water outlet end of the water pump is communicated with one end of the main pipe of the eight-claw pipe 5. The branch pipe is evenly distributed around the main pipe for a circle, one end of the branch pipe is communicated with the other end of the main pipe, and the other end of the branch pipe is connected with one end of the Venturi tube 7. The eight branch pipes are adopted, so that the flowing efficiency of the liquid can be effectively improved; micro bubbles are formed by utilizing the Venturi principle, and CO is greatly improved
2The mass transfer efficiency of (2). The other end of the venturi tube 7 is connected with one end of a connecting pipeline respectively, and the other end of the connecting pipeline extends out of the air chamber 2 and then is connected with one end of a hose 8. The other end of the hose 8 is connected with one end of a bubble conveying pipe 9, and the other end of the bubble conveying pipe 9 inclines upwards and then extends into the reactor 1. The bubble conveying pipes 9 are uniformly distributed around the reactor 1 for one circle; therefore, the bubble conveying efficiency and the bubble cutting efficiency of the dispersed flow rotary type cloth exposing device can be effectively improved.
In specific implementation, a deflective flow type bubble cutting pipe 14 is further arranged on the upper side of the part, extending into the counter-inducer, of the bubble conveying pipe 9, one end of the deflective flow type bubble cutting pipe 14 is communicated with the bubble conveying pipe 9, and the other end of the deflective flow type bubble cutting pipe is inclined upwards and extends to the lower layer of the lower layer cutting disc 12. The upper side of the upper part of the bias flow type bubble cutting pipe 14 is an open structure to form an open section, and a plurality of convex thorns 13 are also arranged on the lower side of the open section. Wherein, the inclined angle of 30 degrees is formed between the bias flow type bubble cutting pipe 14 and the bubble conveying pipe 9, thus, the bias flow type bubble cutting pipe 14 upwards cuts and sends out the bubbles, so that the bubbles can still ensure sufficient kinetic energy to enter the flow dispersing aerator after being cut, and the bubbles are cut and simultaneously ensured to be uniformly distributed in the reaction device.
The free-flow rotary-type cloth exposer comprises a motor 10, a transmission shaft 11 and a (bubble) cutting device. The motor 10 is arranged above the reactor 1 and is fixedly connected with the reactor 1 through a plurality of support rods, and the shaft of the motor 10 is arranged downwards vertically; the upper end of the transmission shaft 11 is fixedly connected with a motor 10 shaft through a coupler, extends into the reactor 1 below the transmission shaft and is positioned above the upper end of the bubble delivery pipe 9. The cutting device comprises three layers of cutting disks 12 which are arranged at intervals and sleeved at the lower part of the transmission shaft 11, and a plurality of through holes are formed in each cutting disk 12 and used for air bubbles to penetrate through; wherein, the upper layer cutting disc 12 and the lower layer cutting disc 12 are rotatably connected with the transmission shaft 11 through bearings, and the middle cutting disc 12 is fixedly connected with the rotating shaft; the cutting discs 12 are of bowl-shaped structures with large upper parts and small lower parts, and a plurality of convex thorns 13 are arranged on the lower side of the upper-layer cutting disc 12 and the upper and lower sides of the middle cutting disc and the lower-layer cutting disc 12. The flow-dispersing rotary-type cloth aerator is provided with three layers of cutting disks 12, the cutting disks 12 are provided with convex thorns 13, the cutting times are increased and bubbles are reduced as much as possible in the rotating process of the middle layer cutting disk 12, so that gas can form bubble groups with uniform size and uniform distribution in solution, the bubble groups are fully and uniformly contacted with algae liquid, and the growth of microalgae is facilitated; higher-quality microalgae can be obtained through a better mixing effect, and the utilization of later biomass energy is facilitated; the rotation of the middle cutting disc 12 of the three-layer structure of the flow scattering rotary type cloth exposer increases the rotation angular velocity of the bubble micro-cluster, so that the tangential stress borne by the bubble is increased, and the pressure on the surface of the bubble is increased, so that the diameter of the bubble can be effectively reduced; make the bubble cut many times, and not only can effectively reduce the bubble diameter through rotating and can make algae liquid and bubble contact more abundant simultaneously, strengthen the vortex when playing the stirring effect, reduce the coalescence of bubble to the time that the bubble rises has been prolonged, greatly improved little algae reaction's mass transfer efficiency and solid carbon efficiency, demonstrate splendid economic nature again simultaneously. In specific implementation, the convex thorns 13 on the upper cutting disk 12, the middle cutting disk 12 and the lower cutting disk 12 are all distributed on the circumference coaxial with the transmission shaft 11, and the convex thorns 13 between two adjacent layers of cutting disks 12 are alternately distributed along the radial direction of the cutting disks 12; thereby avoiding interference between the projections of the adjacent two layers of cutting discs 12. In order to further improve the bubble cutting efficiency, the upper end of the bubble conveying pipe 9 is positioned below the lower-layer cutting disc 12 and close to the middle of the lower side of the lower-layer cutting disc 12; the upper end of the air outlet pipe is positioned right below the middle part of the lower cutting disc, so that generated bubbles can quickly and directly enter the bubble cutting device. During operation, the air bubbles are firstly cut by the convex thorns 13 on the lower side of the lower cutting disk 12, then penetrate through the lower cutting disk 12 to enter between the lower cutting disk 12 and the middle cutting disk 12, are cut by the convex thorns 13 between the middle cutting disk 12 and the lower cutting disk 12 under the rotation of the middle cutting disk 12, then penetrate through the through holes on the middle cutting disk 12 to enter between the middle cutting disk 12 and the upper cutting disk 12, are cut again by the convex thorns 13 between the middle cutting disk 12 and the upper cutting disk 12, and finally penetrate through the upper cutting disk 12 to form the air bubbles with smaller diameter and more uniform size.
In the device, the reactor 1 adopts a mode of combining the bubble generator based on the eight-claw pipe 5 and the dispersed flow rotary type aeration device based on the cutting device, so that the size of bubbles can be better controlled, smaller and more uniform bubble groups can be obtained, the mass transfer process is enhanced, and a better mixing effect is realized; thereby greatly improving the CO content of the microalgae
2Utilization ratio of (2); the produced microalgae has higher quality, thereby being beneficial to the extraction and utilization of the biomass energy of the microalgae. The effluent of the bubble generator with the structure of the eight-claw pipe 5 can drive the algae liquid to circulate to achieve a micro-dynamic process, so that all parts of the microalgae can uniformly absorb light energy, and higher light energy utilization rate and CO (carbon monoxide) are achieved
2Utilization ratio of (2); the growth of the microalgae is faster, the light energy utilization rate and the carbon sequestration efficiency of the microalgae are high.
In the device, the reactor 1 forms a culture solution runway through the water pump 6, the eight-claw pipe 5 and the bubble conveying pipe 9, so that the aim of circulating the culture solution is achieved, and the algae solution is driven by the aid of the buoyancy of rising bubbles to achieve the purpose of strengthening turbulent flow and obtaining a better mixing effect. The flow-dispersing rotary-type aeration device in the reactor 1 can enable gas to form bubble groups with uniform size and uniform distribution in the culture solution, so that the bubble groups are fully and uniformly contacted with the algae solution, and the growth of microalgae is facilitated; higher-quality microalgae can be obtained by better mixing effect, and the utilization of later biomass energy is facilitated.
The device has uniform foaming and high mass transfer efficiency, and the adding rotation not only plays a role of stirring, but also can effectively reduce the diameter of bubbles so as to generate more bubble diameters which enable the reaction to reach the maximum efficiency; can effectively cut bubbles to reduce the diameter of the bubbles, thereby leading the carbon fixation efficiency to be higher.
The device is integrally unified and stable, each part is clearly and reasonably divided, and the effect of 'performing the other' is achieved, the whole system device can move the Venturi tube 7, the bias flow type bubble cutting tube 14, the dispersed flow rotary type exposure device, the pressure stabilizing valve and other parts to work together, the functions of all the parts are maximized, and the specific effect can be summarized as 'one mass transfer, two foaming and three expansion four cutting'; greatly improves the carbon fixation and mass transfer efficiency of the microalgae, and is rich in the concept of energy conservation and emission reduction. The biomass energy after carbon sequestration of the microalgae can be reused, such as power generation, oil production or hydrogen production and the like, and energy required by secondary reaction is saved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (5)
1. A controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon fixation efficiency is characterized in that: comprises a reactor, a gas chamber, a bubble generator and a dispersed flow rotary type cloth aerator; the reactor is of an open structure with an open upper part, the gas chamber is of a closed box structure, and the reactor is positioned on the upper side of the gas chamber and is fixedly connected with the gas chamber; one side of the air chamber is provided with an air inlet pipe communicated with the air chamber, and one end of the air inlet pipe connected with the air chamber is provided with a pressure stabilizing valve; the top of the gas chamber is provided with a gas outlet pipe, the lower end of the gas outlet pipe is communicated with the gas chamber, the upper end of the gas outlet pipe extends into the reactor, the upper end of the gas outlet pipe is provided with a one-way valve, and only gas in the gas chamber can enter the reactor through the one-way valve;
the bubble generator is arranged in the air chamber and comprises eight claw pipes, a water pump and a Venturi pipe; the eight-claw pipe comprises a main pipe and eight branch pipes connected with the same end of the main pipe, the water inlet end of the water pump is communicated with the bottom of the reactor through a liquid inlet pipe, and the water outlet end of the water pump is communicated with one end of the main pipe of the eight-claw pipe; the branch pipes are uniformly distributed around the main pipe for one circle, one end of each branch pipe is communicated with the other end of the main pipe, and the other end of each branch pipe is connected with one end of the venturi pipe; the other end of the Venturi tube is respectively connected with one end of a connecting pipeline, and the other end of the connecting pipeline extends out of the air chamber and then is connected with one end of a hose; the other end of the hose is connected with one end of a bubble conveying pipe, and the other end of the bubble conveying pipe inclines upwards and then extends into the reactor;
the flow-dispersing rotary-type cloth exposure device comprises a motor, a transmission shaft and a cutting device; the motor is arranged above the reactor and is fixedly connected with the reactor through a plurality of supporting rods, and a motor shaft of the motor is arranged vertically downwards; the upper end of the transmission shaft is fixedly connected with a motor shaft, the lower end of the transmission shaft extends into the reactor and is positioned above the upper end of the bubble conveying pipe; the cutting device comprises three layers of cutting disks which are arranged at intervals and sleeved at the lower part of the transmission shaft, a plurality of through holes are formed in the cutting disks, the upper layer of cutting disk and the lower layer of cutting disk are rotatably connected with the transmission shaft through bearings, and the middle cutting disk is fixedly connected with the rotating shaft; the cutting discs are of bowl-shaped structures with large upper parts and small lower parts, and a plurality of convex thorns are arranged on the lower side of the upper-layer cutting disc and the upper and lower sides of the middle cutting disc and the lower-layer cutting disc; the upper end of the air outlet pipe is positioned right below the middle part of the lower cutting disc.
2. The controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon sequestration efficiency according to claim 1, characterized in that: a bias flow type bubble cutting pipe is also arranged on the upper side of the part of the bubble conveying pipe extending into the counter-inducer, one end of the bias flow type bubble cutting pipe is communicated with the bubble conveying pipe, and the other end of the bias flow type bubble cutting pipe is inclined upwards towards one side of the reactor and extends to the lower side of the lower layer cutting disc; the upper side of the upper part of the bias flow type bubble cutting pipe is an open structure to form an open section, and a plurality of convex thorns are also arranged on the lower side of the open section.
3. The controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon sequestration efficiency according to claim 1, characterized in that: the upper end of the bubble conveying pipe is positioned below the lower-layer cutting disc and close to the middle of the lower side of the lower-layer cutting disc.
4. The controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon sequestration efficiency according to claim 1, characterized in that: the bubble conveying pipes are uniformly distributed around the reactor for one circle.
5. The controllable turbulent flow type microalgae cultivation device capable of effectively improving carbon sequestration efficiency according to claim 1, characterized in that: the convex thorns on the upper layer cutting disc, the middle cutting disc and the lower layer cutting disc are uniformly distributed on the circumference which is coaxial with the transmission shaft, and the convex thorns between the two adjacent layers of cutting discs are alternately distributed along the radial direction of the cutting discs.
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