CN116200261A - Aeration pipe and aerator - Google Patents
Aeration pipe and aerator Download PDFInfo
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- CN116200261A CN116200261A CN202310237875.2A CN202310237875A CN116200261A CN 116200261 A CN116200261 A CN 116200261A CN 202310237875 A CN202310237875 A CN 202310237875A CN 116200261 A CN116200261 A CN 116200261A
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- aeration
- shearing
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- cavities
- baffle
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- 238000005273 aeration Methods 0.000 title claims abstract description 195
- 238000005276 aerator Methods 0.000 title claims abstract description 28
- 238000010008 shearing Methods 0.000 claims abstract description 105
- 238000004891 communication Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 26
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 13
- 239000001569 carbon dioxide Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 description 29
- 241000195493 Cryptophyta Species 0.000 description 17
- 230000000243 photosynthetic effect Effects 0.000 description 11
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 239000002028 Biomass Substances 0.000 description 4
- 239000005038 ethylene vinyl acetate Substances 0.000 description 4
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 4
- 230000001737 promoting effect Effects 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003306 harvesting Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 2
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- 239000000047 product Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
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- 235000016425 Arthrospira platensis Nutrition 0.000 description 1
- 240000002900 Arthrospira platensis Species 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000195649 Chlorella <Chlorellales> Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/02—Photobioreactors
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/18—External loop; Means for reintroduction of fermented biomass or liquid percolate
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/26—Means for regulation, monitoring, measurement or control, e.g. flow regulation of pH
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/34—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of gas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to the technical field of carbon dioxide aeration, and discloses an aeration pipe and an aerator. The aeration pipe comprises a pipe body, wherein the pipe body is provided with an aeration channel and an aeration opening, the aeration channel is provided with a baffle, a shearing aeration assembly and an aeration layer, the aeration opening, the shearing aeration assembly and the aeration layer are all located on the same side of the baffle, the shearing aeration assembly is provided with shearing cavities which are arranged in an axial staggered mode along the aeration channel, the aeration opening is formed in the aeration layer, the aeration opening is close to the baffle compared with the aeration layer, and the aeration opening is communicated with the shearing cavities and the aeration opening. The beneficial effects are that: the aeration channel can be used for allowing bubbles to pass through; the baffle plays a role in diversion and interception, so that bubbles can pass through the aeration port after passing through the aeration effect of the shearing aeration assembly and the aeration layer; the shearing aeration assembly is provided with shearing cavities which are arranged in a staggered manner along the radial direction of the aeration channel, so that bubbles can be rapidly sheared into a shape with similar volume; the aeration holes can reduce the volume of bubbles, so that the volume of bubbles is smaller when the bubbles leave the aeration pipe through the aeration holes.
Description
Technical Field
The invention relates to the technical field of carbon dioxide aeration, in particular to an aeration pipe and an aerator.
Background
The microalgae carbon fixing technology is a process of converting a large amount of carbon dioxide into biomass by utilizing microorganisms, and 1.83 tons of carbon dioxide can be fixed per 1 ton of microalgae biomass produced. The vertical type photoreactor has the technical advantages of high microalgae harvesting amount and small occupied area in the production and operation process.
The aeration effect of traditional stand photosynthetic reactor through the aeration hole that aperture is 0.1mm, this kind of structure is not good enough, mainly shows in: 1. because of the limitation of processing precision, when the aperture difference of the same aerator pipe is 0.01-0.02 mm, the aeration rates of different upright posts are greatly different, and the quick growth and carbon fixation of microalgae are affected. 2. The bubbles are gathered and expanded in the rising process, so that a large number of tiny bubbles exist in the reactor only near the bottom, and the technical problem of low aeration efficiency is yet to be solved.
Disclosure of Invention
The invention aims to solve the technical problems that: the bubbles are accumulated and expanded in the rising process, so that a large number of tiny bubbles exist in the reactor only near the bottom, and the aeration efficiency is low.
In order to solve the technical problems, the invention provides an aeration pipe, which comprises a pipe body, wherein the pipe body is provided with an aeration channel and an aeration opening, the aeration channel is provided with a baffle plate, a shearing aeration assembly and an aeration layer, the aeration opening, the shearing aeration assembly and the aeration layer are all positioned on the same side of the baffle plate, the shearing aeration assembly is provided with shearing cavities which are arranged in a staggered manner along the axial direction of the aeration channel, the aeration layer is provided with aeration holes, the aeration opening is closer to the baffle plate than the aeration layer, and the aeration holes are communicated with the shearing cavities and the aeration opening.
In the above technical scheme, the shearing aeration assembly comprises a first shearing unit and a second shearing unit which are arranged along the axial direction of the aeration channel at intervals, the first shearing unit is provided with a plurality of first shearing cavities, the second shearing unit is provided with a plurality of second shearing cavities, the aeration channel, the first shearing cavities, the second shearing cavities and the aeration holes are sequentially communicated, and the extending direction of the first shearing cavities is perpendicular to the extending direction of the second shearing cavities.
In the above technical scheme, the first shearing unit comprises a plurality of first shearing pieces, the plurality of first shearing pieces are arranged at intervals along the radial direction of the aeration channel, and two adjacent first shearing pieces enclose a first shearing cavity therebetween.
In the above technical solution, the width of the first shearing member is equal to the width of the first shearing chamber.
In the above technical scheme, the second shearing unit comprises a plurality of second shearing members, the second shearing members are arranged at intervals along the radial direction of the aeration channel, and two adjacent second shearing members enclose a second shearing cavity therebetween.
In the above technical solution, the width of the second shearing member is equal to the width of the second shearing chamber.
In the above technical scheme, the baffle is provided with the through hole, and the shearing aeration assembly and the aeration layer are all arranged along the circumferential extension of the outer side of the through hole.
In the above technical solution, the side of the through hole of the baffle plate is a first side, the other side is a second side, and the baffle plate extends obliquely downwards along the axial direction of the aeration channel from the first side to the second side.
In the above technical scheme, the aeration port extends along the circumferential direction of the pipe body.
Another aspect of the present invention provides an aerator, which comprises a plurality of aeration pipes according to the technical scheme, and a plurality of aeration channels are sequentially communicated.
Compared with the prior art, the aerator pipe provided by the embodiment of the invention has the beneficial effects that: the aeration channel can be used for allowing bubbles to pass through; the baffle plays a role in diversion and interception, so that bubbles can pass through the aeration port after passing through the aeration effect of the shearing aeration assembly and the aeration layer; the shearing aeration assembly is provided with shearing cavities which are arranged in a staggered manner along the radial direction of the aeration channel, so that bubbles can be rapidly sheared into a shape with similar volume; the aeration holes can further reduce the volume of the bubbles, so that the bubbles have smaller volume when leaving the aeration pipe through the aeration holes.
The invention improves the condition that bubbles expand along with the rising process when the traditional column reactor is aerated, obviously improves the aeration efficiency and is beneficial to promoting the mass transfer of gas and liquid.
Drawings
FIG. 1 is a schematic view of an aerator pipe according to an embodiment of the invention;
FIG. 2 is a schematic view in full section of an aerator pipe according to an embodiment of the invention;
FIG. 3 is a schematic view in full section of another view of an aerator pipe according to an embodiment of the invention;
in the figure, 1, a pipe body; 101. an aeration channel; 102. an aeration port;
2. a baffle; 201. a through hole;
3. a shear aeration assembly; 311. a first shear member; 312. a first shear chamber; 321. a second shear member; 322. a second shear chamber;
4. an aeration layer; 401. and (5) exposing the pores.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. in the present invention are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used in the present invention in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; the mechanical connection can be realized, and the welding connection can be realized; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
As shown in fig. 1, 2 and 3, an aeration pipe according to a preferred embodiment of the present invention includes a pipe body 1, the pipe body 1 is provided with an aeration channel 101 and an aeration port 102, the aeration channel 101 is provided with a baffle plate 2, a shearing aeration assembly 3 and an aeration layer 4, the aeration port 102, the shearing aeration assembly 3 and the aeration layer 4 are all located at the same side of the baffle plate 2, the shearing aeration assembly 3 is provided with shearing chambers which are staggered along the axial direction of the aeration channel 101, the aeration layer 4 is provided with an aeration hole 401, the aeration port 102 is closer to the baffle plate 2 than the aeration layer 4, and the aeration hole 401 is communicated with the shearing chambers and the aeration port 102.
It will be appreciated that the aeration channel 101 may allow bubbles to pass through; the baffle plate 2 plays a role in diversion and interception, so that bubbles can pass through the aeration port 102 after being subjected to the aeration action of the shearing aeration assembly 3 and the aeration layer 4; the shearing aeration assembly 3 is provided with shearing cavities which are staggered along the radial direction of the aeration channel 101, so that bubbles can be rapidly sheared into a shape with similar volume; aeration holes 401 may further reduce the volume of the bubbles, making the bubbles smaller as they leave the aeration tube through aeration port 102.
The invention improves the condition that bubbles expand along with the rising process when the traditional column reactor is aerated, obviously improves the aeration efficiency and is beneficial to promoting the mass transfer of gas and liquid.
As shown in fig. 2 and 3, further, the shear aeration assembly 3 includes a first shear unit and a second shear unit that are disposed at intervals along an axial direction of the aeration channel 101, the first shear unit is provided with a plurality of first shear cavities 312, the second shear unit is provided with a plurality of second shear cavities 322, the aeration channel 101, the first shear cavities 312, the second shear cavities 322 and the aeration holes 401 are sequentially communicated, and an extending direction of the first shear cavities 312 is perpendicular to an extending direction of the second shear cavities 322.
It will be appreciated that bubbles pass from the aeration channel 101 through the first shear chamber 312, the second shear chamber 322, and the aeration holes 401 in that order. Because the extending direction of the first shearing chamber 312 is perpendicular to the extending direction of the second shearing chamber 322, the air bubbles can be rapidly cut at different angles when passing through the first shearing chamber 312 and the second shearing chamber 322, and are divided into smaller volumes, so that the volume of the air bubbles is smaller when leaving the aeration pipe through the aeration port 102.
As shown in fig. 2 and 3, further, the first shearing unit includes a plurality of first shearing members 311, the plurality of first shearing members 311 are arranged at intervals along the radial direction of the aeration channel 101, and a first shearing cavity 312 is defined between two adjacent first shearing members 311.
It will be appreciated that such an arrangement may provide a greater number of first shear cavities 312, which may facilitate effective separation of bubbles. Through setting up the interval between the first shearing members 311, this embodiment can adjust the size of the first shearing chamber 312, and then adjust the size of the air bubble after being primarily cut, be favorable to the follow-up second shearing unit to the re-cutting of the air bubble after being primarily cut to make the air bubble form less volume.
Preferably, the width of the first shearing member 311 is equal to the width of the first shearing chamber 312.
As shown in fig. 2 and 3, further, the second shearing unit includes a plurality of second shearing members 321, and the plurality of second shearing members 321 are arranged at intervals along the radial direction of the aeration channel 101, and a second shearing cavity 322 is defined between two adjacent second shearing members 321.
It will be appreciated that such an arrangement may provide a greater number of first shear cavities 312, which may facilitate effective separation of bubbles. By setting the interval between the second shearing members 321, the size of the second shearing chamber 322 can be adjusted in this embodiment, so as to adjust the size of the air bubble after being secondarily cut, so that the air bubble forms a smaller volume.
Preferably, the width of the second shear 321 is equal to the width of the second shear cavity 322.
Further, as shown in fig. 1, the baffle plate 2 is provided with a through hole 201, and the shear aeration assembly 3 and the aeration layer 4 are all arranged along the outer circumference of the through hole 201.
It will be appreciated that the baffle 2 so arranged acts primarily as a shunt and a barrier to allow bubbles to pass through the aeration openings 102 after aeration by the shear aeration assembly 3 and the aeration layer 4. Preferably, the diameter of the through hole 201 is 1mm and the depth is 0.9mm.
As shown in fig. 2 and 3, further, the side of the through hole 201 of the baffle plate 2 is a first side, the other side is a second side, and the baffle plate 2 extends obliquely downward from the first side to the second side along the axial direction of the aeration channel 101.
It will be appreciated that such an arrangement provides for both diversion and interception of the baffle 2 on the one hand and also provides for mounting of the shear aeration assembly 3 and the aeration layer 4 on the other hand, which is advantageous for improved stability of both.
Preferably, the aeration openings 102 are provided extending in the circumferential direction of the tube body 1.
In one embodiment, the width ratio of the first shearing piece 311 to the first shearing cavity 312 is 1:1, the width is 0.1mm, the area ratio of the aeration holes 401 of the aeration layer 4 to the aeration holes is 3:1, the aeration holes 401 are rectangular, and the side length is 0.1mm; the width of the aeration port 102 is 0.3mm; the diameter of the through hole 201 of the baffle plate 2 is 1mm, and the depth is 0.9mm; in the first shearing unit, the second shearing unit, the aeration layer 4, the aeration port 102 and the baffle plate 2, the distance between the two adjacent two is 0.1mm, and the lower part of the pipe body 1 is butted with an EVA resin (ethylene-vinyl acetate copolymer) straight air pipe.
In another embodiment, the width ratio of the first shearing piece 311 to the first shearing cavity 312 is 1:1, the width is 0.3mm, the area ratio of the aeration holes 401 of the aeration layer 4 to the aeration holes 401 is 3:1, the aeration holes 401 are rectangular, and the side length is 0.3mm; the width of the aeration port 102 is 0.5mm; the diameter of the through hole 201 of the baffle plate 2 is 1.8mm, and the depth is 1.8mm; in the first shearing unit, the second shearing unit, the aeration layer 4, the aeration port 102 and the baffle plate 2, the distance between the two adjacent two is 0.4mm, and the lower part of the pipe body 1 is butted with an EVA resin (ethylene-vinyl acetate copolymer) straight air pipe.
In another aspect, the present invention further provides an aerator, including a plurality of aeration pipes according to the above embodiments, where the plurality of aeration channels are sequentially connected.
Because the aeration pipe of the embodiment is adopted, the aerator has the same beneficial effects as the aeration pipe, and the description is omitted here.
Preferably, the total length of the aerator is 4m, the pipe diameter is 4mm, the lower end is open, the upper end is closed, and the main body of the aerator is provided with an aeration pipe at intervals of 0.5m in the axial direction.
The invention also provides a microalgae cultivation system, which comprises a carbon dioxide supply system, wherein a pump is used for sending pipeline flue gas into a carbon dioxide introduction device, and then carbon dioxide enters the column type photosynthetic reactor through the aerator in the embodiment; the microalgae cultivation and harvesting system is characterized in that a main body is a column type photosynthetic reactor with the aerator in the embodiment, the algae is selected from chlorella, the growth environment of the microalgae is monitored by using probes such as pH value, oxygen transmission, temperature and the like (the pH is controlled to be 8, the environment temperature is 32 ℃, the illumination intensity is 50000 lux), the algae liquid is cultivated for seven days, after the cultivation is mature, the algae liquid enters a collecting tank through a collecting pipe and a collecting port, and the algae liquid in the collecting tank becomes microalgae active cell liquid after being concentrated; and the circulating water return system is used for recycling the algae liquid into the circulating tank every night, uniformly stirring the algae liquid the next day, reintroducing the algae liquid into the reactor, concentrating the collecting tank, introducing the produced supernatant and the culture medium into the circulating tank after passing through the sterilizing device, simultaneously, introducing the culture liquid filtered before entering the collecting tank into the circulating tank, introducing the culture liquid in the circulating tank into the vertical column photosynthetic reactor through the circulating pipe, and separating the algae liquid and the circulating culture liquid which are overflowed from the upper end of the vertical column photosynthetic reactor through the recycling/drainage regression pipe.
Compared with the mode of fixed-point punching adopted in industry, the aerator utilizes the water stop valve to control the outlet pressure on the same air guide pipe, so that the problem of overlarge air outlet speed difference of different upright posts is avoided, and meanwhile, the aeration mode is adopted, so that the problems of uneven size and distribution of bubbles on different levels are avoided. The aerator reduces the bubble generation diameter by 75.4 percent to 0.6mm, reduces the bubble generation time by 52.9 percent to 4.5s, improves the gas-liquid mass transfer efficiency by 62 percent, reduces the average diameter of bubbles at the position of 2m in the middle of the upright post by 86.4 percent to 7.6mm, thereby enhancing the mass transfer and flash effect in the upright post type photosynthetic reactor, promoting the microalgae growth rate to be improved by 40 percent, and improving the utilization efficiency of carbon dioxide gas to the microalgae cell active liquid biomass of the product by 3.4 times.
In another embodiment, the microalgae cultivation system comprises a carbon dioxide supply system, wherein pure carbon dioxide gas with the concentration of 99.99% is sent into a carbon dioxide introduction device by a pump, and then the carbon dioxide gas enters the column type photosynthetic reactor through an aerator; the microalgae cultivation and harvesting system is characterized in that a main body is a column type photosynthetic reactor provided with an aerator, spirulina is selected as a algae seed, the growth environment of the microalgae is monitored by using probes such as pH value, oxygen transmission, temperature and the like (the pH is controlled to be 10, the environment temperature is 36 ℃, the illumination intensity is 40000 lux), the algae liquid is cultivated for five days, after the algae liquid is cultivated and ripe, the algae liquid enters a collecting tank through a collecting pipe and a collecting port, and the algae liquid in the collecting tank becomes microalgae active cell liquid after being concentrated; and the circulating water return system is used for recycling the algae liquid into the circulating tank every night, uniformly stirring the algae liquid the next day, reintroducing the algae liquid into the reactor, concentrating the collecting tank, introducing the produced supernatant and the culture medium into the circulating tank after passing through the sterilizing device, simultaneously, introducing the culture liquid filtered before entering the collecting tank into the circulating tank, introducing the culture liquid in the circulating tank into the vertical column photosynthetic reactor through the circulating pipe, and separating the algae liquid and the circulating culture liquid which are overflowed from the upper end of the vertical column photosynthetic reactor through the recycling/drainage regression pipe.
Compared with the mode of fixed-point punching adopted in industry, the aerator utilizes the water stop valve to control the outlet pressure on the same air guide pipe, so that the problem of overlarge air outlet speed difference of different upright posts is avoided, and meanwhile, the problem of uneven size and distribution of bubbles on different horizontal heights is avoided by adopting a graded aeration mode. The aerator reduces the bubble generation diameter by 43.6 percent to 1.8mm, reduces the bubble generation time by 44.6 percent to 5.2s, improves the gas-liquid mass transfer efficiency by 51 percent, reduces the average diameter of bubbles at the position of 2m in the middle of the upright post by 76.5 percent to 13mm, thereby enhancing the mass transfer and flash effect in the upright post type photosynthetic reactor, promoting the microalgae growth rate to be improved by 32 percent, and improving the utilization efficiency of carbon dioxide gas to the product microalgae cell active liquid biomass by 2.7 times.
In summary, the embodiment of the invention provides an aeration pipe, wherein an aeration channel of the aeration pipe can allow bubbles to pass through; the baffle plays a role in diversion and interception, so that bubbles can pass through the aeration port 102 after passing through the aeration effect of the shearing aeration assembly and the aeration layer; the shearing aeration assembly is provided with shearing cavities which are arranged in a staggered manner along the radial direction of the aeration channel, so that bubbles can be rapidly sheared into a shape with similar volume; the aeration holes may further reduce the volume of the bubbles, making the bubbles smaller when exiting the aeration tube through the aeration port 102.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (10)
1. The utility model provides an aeration pipe, its characterized in that, includes the body, aeration channel and aeration mouth have been seted up to the body, aeration channel is equipped with the baffle, cuts aeration subassembly and aeration layer, the aeration mouth the shear aeration subassembly with the aeration layer all is located the same side of baffle, it is equipped with the edge to cut aeration subassembly the axial staggered arrangement's of aeration channel shearing chamber, the aeration hole has been seted up on the aeration layer, the aeration mouth is than the aeration layer is close to and locates the baffle, the aeration hole intercommunication the shearing chamber with the aeration mouth.
2. The aerator pipe of claim 1, wherein the shearing aeration assembly comprises a first shearing unit and a second shearing unit which are arranged along the axial direction of the aeration channel at intervals, the first shearing unit is provided with a plurality of first shearing cavities, the second shearing unit is provided with a plurality of second shearing cavities, the aeration channel, the first shearing cavities, the second shearing cavities and the aeration holes are sequentially communicated, and the extending direction of the first shearing cavities is perpendicular to the extending direction of the second shearing cavities.
3. An aeration tube according to claim 2, wherein the first shearing unit comprises a plurality of first shearing members, the plurality of first shearing members are arranged at intervals along the radial direction of the aeration channel, and two adjacent first shearing members enclose the first shearing chamber therebetween.
4. An aerator pipe as claimed in claim 3 wherein the width of the first shear member is equal to the width of the first shear chamber.
5. An aeration tube according to claim 2, wherein the second shearing unit comprises a plurality of second shearing members, the plurality of second shearing members are arranged at intervals along the radial direction of the aeration channel, and two adjacent second shearing members enclose the second shearing chamber.
6. The aerator pipe of claim 5, wherein the width of the second shear member is equal to the width of the second shear chamber.
7. The aerator pipe of claim 1, wherein the baffle is provided with a through hole, and the shear aeration assembly and the aerator layer are both arranged along the outer circumference of the through hole.
8. An aeration tube according to claim 7, wherein the side of the baffle where the through hole is located is a first side, the other side is a second side, and the baffle extends obliquely downward in the axial direction of the aeration channel from the first side to the second side.
9. An aeration tube according to any one of claims 1 to 8, wherein the aeration openings are provided extending in the circumferential direction of the tube body.
10. An aerator comprising a plurality of aeration pipes according to any one of claims 1 to 9, wherein a plurality of the aeration channels are in communication in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310237875.2A CN116200261B (en) | 2023-03-10 | 2023-03-10 | Aeration pipe and aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310237875.2A CN116200261B (en) | 2023-03-10 | 2023-03-10 | Aeration pipe and aerator |
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| Publication Number | Publication Date |
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| CN116200261A true CN116200261A (en) | 2023-06-02 |
| CN116200261B CN116200261B (en) | 2024-03-29 |
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| CN202310237875.2A Active CN116200261B (en) | 2023-03-10 | 2023-03-10 | Aeration pipe and aerator |
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| US20180057784A1 (en) * | 2016-08-27 | 2018-03-01 | 3D Biotek, Llc | Bioreactor |
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| CN111039471A (en) * | 2020-01-19 | 2020-04-21 | 无锡科技职业学院 | Aeration equipment |
| CN212504248U (en) * | 2020-07-08 | 2021-02-09 | 浙江大学 | Three-layer staggered variable-aperture shearing aerator and microalgae culture system |
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| US20180057784A1 (en) * | 2016-08-27 | 2018-03-01 | 3D Biotek, Llc | Bioreactor |
| CN107973503A (en) * | 2017-12-11 | 2018-05-01 | 浙江大学 | Integral type granule sludge vulcanizes decalcification device and method |
| CN109987975A (en) * | 2019-02-21 | 2019-07-09 | 浙江大学 | Anti-clogging compost aeration tube and its aeration method |
| CN111039471A (en) * | 2020-01-19 | 2020-04-21 | 无锡科技职业学院 | Aeration equipment |
| CN212504248U (en) * | 2020-07-08 | 2021-02-09 | 浙江大学 | Three-layer staggered variable-aperture shearing aerator and microalgae culture system |
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| CN116200261B (en) | 2024-03-29 |
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