JPH0716394B2 - Bubble tower with draft tube - Google Patents
Bubble tower with draft tubeInfo
- Publication number
- JPH0716394B2 JPH0716394B2 JP63192610A JP19261088A JPH0716394B2 JP H0716394 B2 JPH0716394 B2 JP H0716394B2 JP 63192610 A JP63192610 A JP 63192610A JP 19261088 A JP19261088 A JP 19261088A JP H0716394 B2 JPH0716394 B2 JP H0716394B2
- Authority
- JP
- Japan
- Prior art keywords
- draft tube
- bubble column
- opening
- gas
- porous material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
- B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
- B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
- B01F23/232311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit the conduits being vertical draft pipes with a lower intake end and an upper exit end
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/3203—Gas driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/32015—Flow driven
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は液体とガスとの接触を密にし、液体中へのガス
の溶解を促進する気泡塔に関するものである。Description: FIELD OF THE INVENTION The present invention relates to a bubble column for intimately contacting a liquid with a gas and promoting dissolution of the gas in the liquid.
近年、培養廃液量の低減および培養設置の生産性を向上
させる目的で、高菌体濃度で培養する方法が注目されて
いる。好気性微生物を高菌体濃度まで増殖させるために
は、微生物の要求する溶存酸素濃度を維持できるように
酸素を充分に供給しなければならない。このためには、
酸素移動容量係数KLaの高い培養装置が要求されてい
る。In recent years, a method of culturing at a high bacterial cell concentration has been attracting attention for the purpose of reducing the amount of culture waste liquid and improving the productivity of culture installation. In order to grow an aerobic microorganism to a high bacterial cell concentration, sufficient oxygen must be supplied so that the dissolved oxygen concentration required by the microorganism can be maintained. For this,
A culture device with a high oxygen transfer capacity coefficient K L a is required.
従来の技術 福田ら［発酵工学：第59巻,3号、p.259〜270（1981）］
は、塔内下部にドラフトチューブ、塔内上部に多孔板を
備えた気泡塔を考案しKLaが標準型気泡塔（塔内にドラ
フトチューブ等のインターナルがない気泡塔）、或は通
常のドラフトチューブ付き気泡塔より高いKLaが発揮で
きることを報告している。しかし、この結果は通気量の
かなり大きい（通気線速度Ugが10cm/秒以上）場合であ
って、中、低通気量については明らかでない。Conventional Technology Fukuda et al. [Fermentation Engineering: Volume 59, No. 3, p.259-270 (1981)]
Devised a bubble column with a draft tube in the lower part of the tower and a perforated plate in the upper part of the column, and K L a is a standard bubble column (a bubble column without internal draft tubes etc.), or It is reported that higher K L a can be exerted than that of the bubble column with draft tube. However, this result is when the air flow rate is considerably large (air flow velocity Ug is 10 cm / sec or more), and it is not clear about the medium and low air flow rates.
一方、坂東ら［化学工学協会第20回秋季大会講演要旨集
p.700（1987）］はドラフトチューブ付き気泡塔におい
て、ドラフトチューブの下部を多孔板製の筒（金網筒）
にすることによりKLaの値が向上することを報告してい
る。そこでは金網の目開きと金網部分の全体のチューブ
にしめる割合を種々変えて検討した結果、KLaに対して
は目開きの大きさは余り影響せず、金網部分のドラフト
チューブ全体にしめる割合を大きくするほど効果がある
としている。On the other hand, Bando et al. [Chemical Engineering Association 20th Autumn Meeting Abstracts]
p.700 (1987)] is a bubble column with draft tube, the lower part of the draft tube is a tube made of perforated plate (wire mesh tube).
It is reported that the value of K L a is improved by Where a result of the variously changed by considering the proportion of the entire tube mesh and wire mesh portion of the wire mesh, for K L a not affect much the size of the mesh, the proportion of the entire draft tube of wire mesh portions It is said that the larger the value, the better the effect.
発明が解決しようとする課題 本発明は、液体とガスとの接触の向上がはかられ、さら
に高いKLaを発揮するドラフトチューブ付き気泡塔、特
に微生物の要求する溶存酸素濃度を高濃度に維持するこ
とができるドラフトチューブ付き気泡塔型発酵槽を提供
することを目的とする。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention aims to improve contact between a liquid and a gas, and a bubble column with a draft tube that exhibits a higher K L a, in particular, a high concentration of dissolved oxygen concentration required by microorganisms. An object is to provide a bubble column type fermenter with a draft tube that can be maintained.
課題を解決するための手段 本発明のドラフトチューブ付き気泡塔は、塔内にドラフ
トチューブを設けた気泡塔において、該ドラフトチュー
ブが目開き２〜8mm、開口率50〜85％の多孔性材料で構
成され且つ該ドラフトチューブの内部又はドラフトチュ
ーブ外壁と塔の内壁との間に目開き２〜8mm、開口率50
〜85％の多孔性材料よりなる棚が１段以上設けられた構
造を有するものである。Means for Solving the Problems The bubble column with a draft tube of the present invention is a bubble column in which a draft tube is provided in the column, the draft tube is 2 to 8 mm in opening, and a porous material having an opening ratio of 50 to 85% is used. It is configured and the opening of the draft tube or between the outer wall of the draft tube and the inner wall of the tower is 2 to 8 mm and the opening ratio is 50.
It has a structure in which one or more shelves made of ˜85% porous material are provided.
これを第１図（斜視図）により説明すると、気泡塔１の
内部に目開き２〜8mm、開口率50〜85％の多孔性材料で
構成されたドラフトチューブ２が設置され、かつ該ドラ
フトチューブ２の内部に目開き２〜8mm、開口率50〜85
％の多孔性材料よりなる棚３が１段以上、第１図の場合
は２段設けられている。記号４は気体供給口（ガススパ
ージャー）である。This will be described with reference to FIG. 1 (perspective view). Inside the bubble column 1, a draft tube 2 made of a porous material having an opening of 2 to 8 mm and an opening ratio of 50 to 85% is installed, and the draft tube is provided. 2 inside opening 2-8mm, opening ratio 50-85
% Of the porous material, one or more shelves 3 are provided, and in the case of FIG. 1, two shelves are provided. Symbol 4 is a gas supply port (gas sparger).
また、第２図に示すごとく、目開き２〜8mm、開口率50
〜85％の多孔性材料で構成されたドラフトチューブ２の
外部、即ちドラフトチューブ外壁と塔の内壁との間にも
更に目開き２〜8mm、開口率50〜85％の多孔性材料より
なるドーナツ状の棚５を設けても良い。In addition, as shown in FIG. 2, the opening is 2 to 8 mm and the aperture ratio is 50.
A donut made of a porous material having an opening of 2 to 8 mm and an opening ratio of 50 to 85% between the outside of the draft tube 2 composed of up to 85% of the porous material, that is, between the outer wall of the draft tube and the inner wall of the tower. The shelf 5 may be provided.
第１図及び第２図では外径の小さいリング状の気体供給
口４を設けて気体をドラフトチューブの内部に供給する
ようにした場合を示してあるが、第３図のように内径の
大きいリング状の気体供給口４をドラフトチューブの外
部に設けて気体をドラフトチューブの外部、即ちドラフ
トチューブの外壁と塔の内壁との間の空間に供給するよ
うにしてもよい。この場合は液の流れ方向は第１図及び
第２図の場合とは逆になるので、ドラフトチューブの外
部に目開き２〜8mm、開口率50〜85％の多孔性材料より
なる棚５を設置してある。ドラフトチューブの外部に棚
を設置すると共に更にドラフトチューブの内部にも棚を
設けても良い。Although FIGS. 1 and 2 show a case where a ring-shaped gas supply port 4 having a small outer diameter is provided to supply the gas into the draft tube, as shown in FIG. 3, the inner diameter is large. The ring-shaped gas supply port 4 may be provided outside the draft tube to supply the gas to the outside of the draft tube, that is, the space between the outer wall of the draft tube and the inner wall of the tower. In this case, since the flow direction of the liquid is opposite to that in the case of FIG. 1 and FIG. 2, the shelf 5 made of a porous material having an opening of 2 to 8 mm and an opening ratio of 50 to 85% is provided outside the draft tube. It is installed. A shelf may be installed outside the draft tube, and a shelf may be provided inside the draft tube.
ドラフトチューブ２を構成する多孔性材料、その内部の
棚３を構成する多孔性材料及び外部のドーナツ状の棚５
を構成する多孔性材料は同一でも異なっていても良い
が、いずれも目開き（孔径）が２〜8mm程度、開孔率50
〜85％程度のものを使用する。通常、金網を使用するの
が便利であるが、合成樹脂製の多孔板又は網などを使用
することも出来る。Porous material constituting the draft tube 2, porous material constituting the shelf 3 inside the draft tube 2 and outer donut-shaped shelf 5
The porous materials constituting the above may be the same or different, but in each case, the opening (pore diameter) is about 2 to 8 mm and the opening ratio is 50.
Use about 85%. Usually, it is convenient to use a wire net, but it is also possible to use a perforated plate or net made of synthetic resin.
棚は気体供給口のある領域側に、即ち気体がドラフトチ
ューブ内部に供給される場合はドラフトチューブ内部
に、気体がドラフトチューブ外部に供給される場合には
ドラフトチューブの外部に棚を設置するのが効果的であ
る。棚の段数は2,3段程度で充分な効果が発揮される。
あまり段数を増やしく間隔を密にすると、圧力損失の増
加や塔内の構造が複雑となり汚れの増加につながる。ま
たKLaの著しい向上も期待されない。The shelf is installed on the side where the gas supply port is located, that is, inside the draft tube when the gas is supplied inside the draft tube, and outside the draft tube when the gas is supplied outside the draft tube. Is effective. Sufficient effect is exhibited when the number of shelves is about two or three.
If the number of stages is increased too much and the intervals are made close, the pressure loss increases and the structure inside the tower becomes complicated, leading to an increase in fouling. Also, no significant improvement in K L a is expected.
本発明の気泡塔の作用機構を第１図により説明すると、
気体供給口４から吹込んだ気体は、ドラフトチューブの
内部に設けられた棚３を通過することにより比較的小さ
な気泡になり、ドラフトチューブ内部を上昇する。この
気泡の上昇流により液と気泡とが接触して充分に混合が
行われる。ドラフトチューブの内部を通過した気体の大
半は塔頂に抜ける。The operation mechanism of the bubble column of the present invention will be described with reference to FIG.
The gas blown from the gas supply port 4 becomes relatively small bubbles by passing through the shelf 3 provided inside the draft tube, and rises inside the draft tube. Due to the upward flow of the bubbles, the liquid and the bubbles come into contact with each other to sufficiently mix them. Most of the gas that has passed through the inside of the draft tube escapes to the top of the column.
ドラフトチューブ内部の気液混合液はドラフトチューブ
内部及びドラフトチューブの外部との間の液の密度差に
より流動化され循環する。ドラフトチューブが目開き２
〜8mm、開口率50〜85％の多孔性材料で構成されている
ため、ドラフトチューブの内部を上昇するガスの一部は
ドラフトチューブの外部へ漏洩しドラフトチューブの外
部を下降する気液混合液とを接触する。The gas-liquid mixed liquid inside the draft tube is fluidized and circulated due to the difference in liquid density between the inside of the draft tube and the outside of the draft tube. Draft tube opening 2
Since it is composed of a porous material with a diameter of ~ 8 mm and an opening ratio of 50-85%, part of the gas that rises inside the draft tube leaks to the outside of the draft tube and descends outside the draft tube. Contact with.
本発明においては、目開き２〜8mm、開口率50〜85％の
多孔性材料で構成されたドラフトチューブを用いると共
に、前記の如く目開き２〜8mm、開口率50〜85％の多孔
性材料よりなる棚を設けることにより、気泡の微細化が
充分に行われ気液の接触を効果的に行うことができる。In the present invention, a draft tube composed of a porous material having an opening of 2 to 8 mm and an opening ratio of 50 to 85% is used, and a porous material having an opening of 2 to 8 mm and an opening ratio of 50 to 85% is used as described above. By providing the shelves made of, it is possible to sufficiently miniaturize the bubbles and effectively contact the gas and liquid.
以下実施例及び比較例により本発明の構成及び効果を具
体的に説明する。The constitution and effects of the present invention will be specifically described below with reference to examples and comparative examples.
実施例１及び比較例1,2,3 塔径150mm、高さ1500mmの塩ビ製直立塔の内側に、目開
き4.5mm、開孔率70％のステンレス金網製の直径100mm、
高さ1000mmのドラフトチューブを設置し、その内側にド
ラフトチューブと同一材料でできた円形の網棚を、ドラ
フトチューブの下法に設置した気体供給口から200mm上
の位置に一枚、その上200mmの位置に一枚、更にその上2
00mmの位置にもう一枚の３段設けたドラフトチューブ付
き気泡塔（実施例１）における通気線速度Ugと酸素移動
容量係数KLaの関係を調べた結果を第４図に○印で示
す。Example 1 and Comparative Examples 1, 2, and 3 Inside a PVC upright tower having a tower diameter of 150 mm and a height of 1500 mm, a diameter of 4.5 mm and a porosity of 70% and a diameter of 100 mm made of stainless wire mesh,
A draft tube with a height of 1000 mm is installed, and a circular net shelf made of the same material as the draft tube is placed inside the draft tube, one at a position 200 mm above the gas supply port installed in the draft method of the draft tube, and a 200 mm above it. 1 piece in position, 2 above it
The result of examining the relationship between the air flow linear velocity Ug and the oxygen transfer capacity coefficient K L a in the bubble column with a draft tube (Example 1) provided with another three stages at the position of 00 mm is shown by a circle in FIG. .
また上記ステンレス金網製のドラフトチューブのみで網
棚を設けなかった場合（比較例１）の通気線速度UgとKL
aとの関係を△印で、ドラフトチューブなしの標準型気
泡塔（比較例２）の通気線速度UgとKLaとの関係を▲印
で、網棚を設けなかった、通常型ドラフトチューブ（金
網製でないドラフトチューブ）と付気泡塔（比較例３）
の通気線の速度UgとKLaとの関係を■印で、それぞれ第
４図に示す。In addition, the ventilation linear velocities Ug and K L in the case where only the draft tube made of the above stainless steel wire mesh was used and no mesh shelf was provided (Comparative Example 1)
The relation with a is indicated by a triangle, and the relation between the air flow velocity Ug of the standard bubble column without a draft tube (Comparative Example 2) and K L a is indicated by a triangle, and a conventional draft tube without a net shelf ( Draft tube not made of wire mesh) and bubble column with comparison (Comparative example 3)
The relationship between the velocity Ug of the ventilation line and K L a is indicated by a black square in Fig. 4, respectively.
第４図に示されるように、本発明のドラフトチューブ付
き気泡塔のKLaは同じ通気線速度Ugにおいて比較例１、
比較例２又は比較例３の気泡塔の約1.8媒に増大してお
り、本発明の有効性が実証されている。 As shown in FIG. 4, K L a of the bubble column with a draft tube of the present invention is the same as Comparative Example 1 at the same air flow velocity Ug.
It has been increased to about 1.8 medium in the bubble column of Comparative Example 2 or Comparative Example 3, demonstrating the effectiveness of the present invention.
また、ドラフトチューブを金網製とするだけでは、KLa
は通常型ドラフトチューブの場合と比較してわずかの向
上を示すにすぎないが、網棚を付加することによって著
しくKLaが向上することが分り、前に述べた従来技術に
対する本発明の優位性も確認された。In addition, if the draft tube is made of wire mesh, K L a
Shows only a slight improvement compared to the case of the conventional draft tube, but it was found that the addition of the shelves significantly improved K L a, and the advantage of the present invention over the prior art described above. Was also confirmed.
実施例２ 第３図に示されるように目開き4.5mm、開孔率70％のス
テンレス金網製のドラフトチューブ外側の下部に気体供
給口を設置し、ドラフトチューブの外側にドラフトチュ
ーブと同一材料でできた環状の網棚を、気体供給口から
200mm上の位置に一枚、その上200mmに位置に一枚、更に
その上200mmの位置にもう一枚の３段設けて、実施例１
と同様に通気線速度Ugと酸素移動容量係数KLaとの関係
を調べた結果を第４図に●印で示す。Example 2 As shown in FIG. 3, a gas supply port was installed on the lower part of the outer side of the draft tube made of stainless steel wire mesh with an opening of 4.5 mm and a porosity of 70%, and the same material as the draft tube was used outside the draft tube. From the gas supply port
Example 1 with one sheet at a position 200 mm above, one sheet at a position 200 mm above it, and another sheet further at a position 200 mm above it, Example 1
The relationship between the air flow velocity Ug and the oxygen transfer capacity coefficient K L a was examined in the same manner as above, and the result is shown by a black circle in FIG.
第４図に示されるように、この場合も本発明のドラフト
チューブ付き気泡塔のKLaは同じ通気線速度Ugにおいて
比較例１、比較例２又は比較例３の気泡塔の場合に比べ
て増大しており、本発明の有効性が実証されている。As shown in FIG. 4, also in this case, the K L a of the bubble column with a draft tube of the present invention is the same as that of the bubble column of Comparative Example 1, Comparative Example 2 or Comparative Example 3 at the same air flow velocity Ug. It is increasing and the effectiveness of the present invention is demonstrated.
実施例3,4,5及び比較例4,5 目開き5.5mm、開孔率85％のステンレス金網を使用し、
下表に記載した条件で実施例１と同様な試験を行なっ
た。Examples 3, 4, 5 and Comparative Examples 4, 5 using a stainless wire mesh with an opening of 5.5 mm and a porosity of 85%,
The same test as in Example 1 was conducted under the conditions shown in the table below.
結果を第５図に示す。目開き5.5mm、開孔率85％のステ
ンレス金網を使用した場合も、本発明の気泡塔のKLaは
同じ通気線速度Ugにおける比較例の気泡塔のKLaよりも
増加している。 Results are shown in FIG. Even when a stainless wire mesh with an opening of 5.5 mm and a porosity of 85% is used, the K L a of the bubble column of the present invention is higher than the K L a of the bubble column of the comparative example at the same ventilation linear velocity Ug. .
実施例6,7,8及び比較例6,7 目開き3.5mm、開孔率55％のステンレス金網を使用し、
下表に記載した条件で実施例１と同様な試験を行なっ
た。Examples 6,7,8 and Comparative Examples 6,7 using a stainless wire mesh with an opening of 3.5 mm and a porosity of 55%,
The same test as in Example 1 was conducted under the conditions shown in the table below.
結果を第６図に示す。目開き3.5mm、開孔率55％のステ
ンレス金網を使用した場合も、本発明の気泡塔のKLaは
同じ通気線速度Ugにおける比較例の気泡塔のKLaよりも
増加している。Results are shown in FIG. Even when a stainless wire mesh with an opening of 3.5 mm and a porosity of 55% is used, the K L a of the bubble column of the present invention is higher than the K L a of the bubble column of the comparative example at the same ventilation linear velocity Ug. .
発明の効果 比較的簡単な構造で、通常のドラフトチューブまたは金
網製のドラフトチューブのみを用いた気泡塔の場合より
も高いガス（酸素）移動容量係数KLaを発揮させること
ができる。 Effect of the Invention With a relatively simple structure, it is possible to exhibit a higher gas (oxygen) transfer capacity coefficient K L a than in the case of a bubble column using only an ordinary draft tube or a draft tube made of wire mesh.
高KLaを発揮する培養槽の実現により、培養排液量の低
減及び培養設備の生産性向上が可能となる。すなわち、
同一量の製品を得るために処理する液量は少なくて済む
（収率が高い）ため塔容量も小さく、また処理すべき廃
棄物の量も小さくて済む。The realization of the culture tank to exhibit high K L a, it is possible to reduce and productivity of the culture equipment culture drainage volume. That is,
Since the amount of liquid to be processed to obtain the same amount of product is small (the yield is high), the column capacity is small and the amount of waste to be processed is also small.
第１図は本発明のドラフトチューブ付き気泡塔の基本的
構造を示す斜視図、第２図及び第３図は他の構造例を示
す斜視図、第４図、第５図及び第６図は実施例及び比較
例における通気線速度Ugと酸素移動容量係数KLaとの関
係を示す図である。FIG. 1 is a perspective view showing the basic structure of a bubble column with a draft tube according to the present invention, FIGS. 2 and 3 are perspective views showing other structural examples, and FIGS. 4, 5, and 6 are FIG. 3 is a diagram showing a relationship between an air flow linear velocity Ug and an oxygen transfer capacity coefficient K L a in Examples and Comparative Examples.
Claims (2)
おいて、該ドラフトチューブが目開き２〜8mm、開口率5
0〜85％の多孔性材料で構成され且つ該ドラフトチュー
ブの内部又はドラフトチューブ外壁と塔の内壁との間に
目開き２〜8mm、開口率50〜85％の多孔性材料よりなる
棚が１段以上設けられた構造を有するドラフトチューブ
付き気泡塔。1. A bubble column in which a draft tube is provided in the column, wherein the draft tube has an opening of 2 to 8 mm and an opening ratio of 5
A shelf made of a porous material having a porosity of 0 to 85% and having an opening of 2 to 8 mm and an opening ratio of 50 to 85% between the inside of the draft tube or the outer wall of the draft tube and the inner wall of the tower is 1 Bubble column with draft tube having a structure with more than one stage.
材料よりなる棚がドラフトチューブの内部又はドラフト
チューブ外壁と塔の内壁との間のうちの少なくとも気体
供給口のある領域側に１段以上設けられている請求項１
に記載のドラフトチューブ付き気泡塔。2. A shelf made of a porous material having an opening of 2 to 8 mm and an opening ratio of 50 to 85%, at least in a region inside the draft tube or between an outer wall of the draft tube and an inner wall of the tower, which has a gas supply port. The one or more steps are provided on the side.
Bubble column with a draft tube according to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63192610A JPH0716394B2 (en) | 1988-08-03 | 1988-08-03 | Bubble tower with draft tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63192610A JPH0716394B2 (en) | 1988-08-03 | 1988-08-03 | Bubble tower with draft tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0242970A JPH0242970A (en) | 1990-02-13 |
| JPH0716394B2 true JPH0716394B2 (en) | 1995-03-01 |
Family
ID=16294124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63192610A Expired - Lifetime JPH0716394B2 (en) | 1988-08-03 | 1988-08-03 | Bubble tower with draft tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0716394B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2785082B2 (en) * | 1991-05-24 | 1998-08-13 | 正照 新村 | Ozone melting method and its device |
| TW286345B (en) * | 1993-12-20 | 1996-09-21 | Toto Ltd | |
| WO2003023306A1 (en) * | 2001-09-06 | 2003-03-20 | Kyowa Hakko Kogyo Co., Ltd. | Draft tube and air bubble tower |
| CN112584920B (en) * | 2019-04-25 | 2023-11-21 | 日挥株式会社 | Fluid mixing unit and fluid mixing method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62269680A (en) * | 1986-05-16 | 1987-11-24 | Chiyoda Seisakusho:Kk | Cultivation apparatus |
| JPS63156598A (en) * | 1986-12-22 | 1988-06-29 | Aoki Denki Kogyo Kk | Simple culture device for bacteria group which acts in organic waste water treatment system |
| JPS63177780A (en) * | 1987-01-16 | 1988-07-21 | Ebara Res Co Ltd | Cultivation apparatus using reversibly rotatable axial-flow impeller |
-
1988
- 1988-08-03 JP JP63192610A patent/JPH0716394B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0242970A (en) | 1990-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5342781A (en) | External-loop perfusion air-lift bioreactor | |
| US4649114A (en) | Oxygen permeable membrane in fermenter for oxygen enrichment of broth | |
| US4978616A (en) | Fluidized cell cultivation process | |
| US5256570A (en) | Bioreactor configured for various permeable cell supports and culture media | |
| CN110241023A (en) | A bioreactor for high-density large-scale animal cell culture and its application | |
| CN103255046B (en) | A circulating foam photobioreactor and its application | |
| CA1052715A (en) | Introduction of nutrient medium into a fermenter | |
| JPH0716394B2 (en) | Bubble tower with draft tube | |
| US5054422A (en) | Multi-layered gaseous phase cultivation | |
| CN210012649U (en) | Aerobic biological reaction tank with sectional filler | |
| TW202434715A (en) | Air-lift bioreactor | |
| CN207016544U (en) | One kind fluidisation cyclic aeration device | |
| US3506541A (en) | Apparatus and method for cultivating cells,tissues and the like | |
| CN206457309U (en) | A kind of aerator of polyvinyl alcohol immobilized microorganism Gel Treatment sewage | |
| CN116835789B (en) | A novel protein separator | |
| JPH05292942A (en) | Culture method using sintered metal element and apparatus therefor | |
| JP2615394B2 (en) | Culture stirring method and culture apparatus | |
| JPH04158781A (en) | Culture device | |
| CN212050764U (en) | Deep aeration tank structure for sewage treatment system | |
| US4093518A (en) | Stirred gas bubble fermenter | |
| CN205443274U (en) | A box-type circulating foam photobioreactor | |
| CN216972118U (en) | A promote device for coking wastewater biological treatment | |
| CN217973154U (en) | Column type bioreactor with device for preventing flooding | |
| CN208648866U (en) | A kind of reinforcing two-stage bio-contact oxidation pond | |
| CN219297496U (en) | Oxygen supply structure of fermentation tank |