JPH06292558A - Agitation type fermentation tank - Google Patents

Agitation type fermentation tank

Info

Publication number
JPH06292558A
JPH06292558A JP8345893A JP8345893A JPH06292558A JP H06292558 A JPH06292558 A JP H06292558A JP 8345893 A JP8345893 A JP 8345893A JP 8345893 A JP8345893 A JP 8345893A JP H06292558 A JPH06292558 A JP H06292558A
Authority
JP
Japan
Prior art keywords
aeration
fermentation
stirring blade
fermenter
stirring
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.)
Granted
Application number
JP8345893A
Other languages
Japanese (ja)
Other versions
JP2776723B2 (en
Inventor
Shoji Morinaga
昌二 森永
Kenji Yamamura
健治 山村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Heavy Industries Ltd filed Critical Sumitomo Heavy Industries Ltd
Priority to JP8345893A priority Critical patent/JP2776723B2/en
Publication of JPH06292558A publication Critical patent/JPH06292558A/en
Application granted granted Critical
Publication of JP2776723B2 publication Critical patent/JP2776723B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02Stirrer or mobile mixing elements
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M29/00Means for introduction, extraction or recirculation of materials, e.g. pumps
    • C12M29/06Nozzles; Sprayers; Spargers; Diffusers

Abstract

PURPOSE:To provide an agitation type fermentation tank capable of sufficiently supplying an aeration gas to the whole fermentation solution in a high viscous fermentation. CONSTITUTION:The agitation type fermentation tank 11 is equipped with a stirring blade 13 for stirring a fermentation solution 17, an aeration pipe 16 at the bottom of the fermentation tank 11, an aeration pipe 18 at the upper part of the stirring blade 13, so that aeration holes blow out the aeration gas in the vertical direction the aeration holes of the aeration pipe 16 at the bottom so as to blow out an aeration gas toward the stirring blade 13. The constitution enables to uniformly supply oxygen gas whole the fermentation solution, because gas bubbles supplied from the upper aeration pipe 18 are lowered together with the downward flow of the fermentation solution substantially without mixed with other bubbles.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、粘性発酵に用いる攪拌
型発酵槽に関し、特に、高粘性培養液中への酸素の溶解
を促進する攪拌型発酵槽に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirred fermenter used for viscous fermentation, and more particularly to a stirred fermenter for promoting dissolution of oxygen in a highly viscous culture solution.

【0002】[0002]

【従来の技術】微生物が作る多糖類、蛋白質、核酸、脂
質等のバイオポリマは有用性がある材料として開発が進
められている。これらのバイオポリマの発酵生産におい
ては、発酵の経過と共に発酵液の粘度が著しく高くなる
ことが多い。したがって、発酵液の粘度が増加するため
攪拌混合が不十分になり、酸素供給速度が低下するた
め、好気性微生物の生育環境を均一に保ち、発酵生産性
を効率良く安定に保つことは困難であった。
2. Description of the Related Art Biopolymers such as polysaccharides, proteins, nucleic acids and lipids produced by microorganisms are being developed as useful materials. In the fermentative production of these biopolymers, the viscosity of the fermented liquid often increases significantly with the progress of fermentation. Therefore, since the viscosity of the fermentation liquor increases, the stirring and mixing becomes insufficient, and the oxygen supply rate decreases, so it is difficult to keep the growth environment of the aerobic microorganisms uniform and to keep the fermentation productivity efficient and stable. there were.

【0003】本出願人は、このような高粘性発酵に用い
る攪拌型発酵槽を既に開発している。図1は本出願人が
既に開発した従来の攪拌型発酵槽である。図1におい
て、1は発酵槽であり、発酵槽1の内部には微生物の生
育環境を均一にするために攪拌軸4に取り付けられた回
転可能な攪拌翼3が配置されている。この攪拌翼3は、
発酵槽1の外部に設けられた駆動部2により、攪拌軸4
を通じて回転する。この攪拌翼3の回転によって、発酵
槽1の内部の発酵液7が攪拌される。この攪拌翼3の構
造は、その下部が板状の大型パドルとなっており、発酵
槽1内の全循環流を発生する機能を有し、その上部が格
子状のグリッド部となって発酵液7を細分化する機能を
有する。
The applicant has already developed a stirring type fermenter used for such high viscosity fermentation. FIG. 1 shows a conventional stirred fermenter already developed by the applicant. In FIG. 1, reference numeral 1 is a fermenter, and a rotatable stirring blade 3 attached to a stirring shaft 4 is arranged inside the fermentation tank 1 in order to make a growth environment of microorganisms uniform. This stirring blade 3
The stirring shaft 4 is driven by a driving unit 2 provided outside the fermenter 1.
Rotate through. The rotation of the stirring blade 3 stirs the fermented liquid 7 inside the fermenter 1. The structure of this stirring blade 3 has a large plate-shaped paddle in the lower part, has a function of generating the entire circulation flow in the fermenter 1, and an upper part thereof serves as a grid-like grid part to form the fermentation liquid. It has the function of subdividing 7.

【0004】発酵槽1内の底部には、空気等の酸素を含
んだ通気ガスを発酵槽1内へ供給するための通気管5が
配置されており、発酵槽1外部の通気ガス入り口6を通
じて通気ガスが通気管5から気泡として発酵液7中へ導
入される。導入された通気ガスは、通気管5からその上
部にある攪拌翼3に向けて吐出される。
A vent pipe 5 for supplying an aeration gas containing oxygen such as air to the inside of the fermenter 1 is arranged at the bottom of the fermenter 1, and through an aeration gas inlet 6 outside the fermenter 1. Aeration gas is introduced into the fermentation liquid 7 as air bubbles from the ventilation pipe 5. The introduced ventilation gas is discharged from the ventilation pipe 5 toward the stirring blade 3 above the ventilation pipe 5.

【0005】[0005]

【発明が解決しようとする課題】本発明者らは、粘性発
酵において発酵槽内の発酵液の粘度によって、発酵槽の
底部に導入された通気ガスの小さな気泡の移動パターン
が変動することを見出した。すなわち、前記従来の攪拌
型発酵槽による発酵液フローパターンは図1のような8
の字流れを形成する。発酵液が比較的低粘度の低粘性発
酵においては、通気管から供給される通気ガスの気泡は
発酵液の8の字流れに沿って分散され、発酵液全体に気
泡は供給される。
DISCLOSURE OF THE INVENTION The present inventors have found that in viscous fermentation, the migration pattern of small bubbles of aeration gas introduced into the bottom of the fermenter changes depending on the viscosity of the fermented liquid in the fermenter. It was That is, the flow pattern of the fermented liquid by the conventional stirred fermenter is 8 as shown in FIG.
Form a flow of letters. In the low-viscosity fermentation in which the fermentation liquid has a relatively low viscosity, the bubbles of the aeration gas supplied from the aeration pipe are dispersed along the figure-eight flow of the fermentation liquid, and the bubbles are supplied to the entire fermentation liquid.

【0006】しかしながら、粘性発酵が進み発酵液の粘
度が数十cpを越え始めると、次第に気泡は発酵槽の中
心方向へ集まり、周辺の気泡と合一し、より大きな気泡
を形成する傾向となる。発酵液の粘度が最終的に数百〜
数千cp高粘性となるような高粘性発酵では、特にこの
傾向は強まり、攪拌翼の上端の攪拌軸の近傍では大きな
気泡の塊を生じ、その気泡はそのまま発酵槽の上部の気
相部へと抜ける。このように、一旦、塊となって上昇し
た気泡は、発酵液フローパターンの8の字流に沿うこと
はない。
However, when the viscous fermentation progresses and the viscosity of the fermentation liquor begins to exceed several tens of cp, the bubbles gradually gather toward the center of the fermenter and coalesce with the bubbles in the surroundings to tend to form larger bubbles. . The viscosity of the fermented liquid is finally several hundreds
In high-viscosity fermentation with a high viscosity of several thousand cp, this tendency becomes particularly strong, and large bubbles are formed in the vicinity of the stirring shaft at the upper end of the stirring blade, and the bubbles are directly transferred to the gas phase part in the upper part of the fermenter. Come out. In this way, the bubbles that have once risen as a lump do not follow the figure 8 flow of the fermentation liquid flow pattern.

【0007】そのため、前記従来の攪拌型発酵槽を用い
た高粘性発酵では、発酵槽内の発酵液のフローに沿った
充分な通気ガス供給が行なえず、したがって、生産性が
低く抑えられる問題があった。このような場合、通気ガ
スの供給を多くしても、気泡が合体して大きくなり、上
方へそのまま無駄に抜けるだけで、発酵液全体に十分に
通気ガスを供給することはできなかった。
[0007] Therefore, in the high-viscosity fermentation using the conventional stirring type fermenter, it is not possible to supply a sufficient amount of aeration gas along the flow of the fermented liquid in the fermentor, and therefore, there is a problem that productivity is suppressed to be low. there were. In such a case, even if the supply of the aeration gas is increased, the bubbles are coalesced into a large size, and the air bubbles are simply wasted upward, and the aeration gas cannot be sufficiently supplied to the entire fermentation solution.

【0008】そこで本発明は、前記した問題点を解決
し、高粘性発酵において、発酵液全体に十分な通気ガス
を供給することができる攪拌型発酵槽を提供することを
目的とする。
[0008] Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a stirring type fermenter capable of supplying a sufficient aeration gas to the entire fermentation liquid in high-viscosity fermentation.

【0009】[0009]

【課題を解決するための手段】前記した問題点を解決す
るために、本発明は、攪拌翼を有する通気攪拌型発酵槽
において、発酵槽の底部と攪拌翼上部周辺に、それぞれ
通気管を配置したことを特徴とする通気攪拌型発酵槽と
するものである。本発明の発酵槽の底部に設けられた前
記通気管は、複数の通気孔が攪拌翼に向けて通気ガスを
吐出するように設けられている。このように通気管の通
気孔を攪拌翼に向けてる理由は、供給した気泡をさらに
細かくするために、つまり気泡界面を大きくするために
攪拌翼に向けて排出することにより、気泡が小さく破断
されるようにするためである。
In order to solve the above-mentioned problems, the present invention relates to an aeration and stirring type fermentation tank having a stirring blade, wherein ventilation pipes are arranged at the bottom of the fermentation tank and around the upper portion of the stirring blade. The aerial stirring type fermentation tank is characterized by the above. The ventilation pipe provided at the bottom of the fermenter of the present invention is provided with a plurality of ventilation holes so as to discharge the ventilation gas toward the stirring blade. The reason why the vent hole of the ventilation pipe is directed toward the stirring blade in this way is that the bubbles are broken into small pieces by discharging the supplied bubbles toward the stirring blade in order to make the bubbles finer, that is, in order to increase the bubble interface. To do so.

【0010】一方、攪拌翼上部周辺に設けられた前記通
気管は、複数の通気孔が鉛直方向に通気ガスを吐出する
ように設けられている。本発明で用いられる通気管の形
状は、例えば、複数の通気孔を有するリング状又はスパ
イラル状、或いはシングルノズル等の任意の形状のもの
が適用できる。前記攪拌翼上部周辺の通気管(上段の通
気管)の配置場所は、攪拌翼上部周辺の発酵槽内壁近傍
の発酵液の下降流の始まる部分に配置することが均一な
通気ガス供給のために効果的である。下降流の任意の位
置に、さらに通気管を付加することも可能である。
On the other hand, the ventilation pipe provided around the upper part of the stirring blade is provided with a plurality of ventilation holes so as to discharge the ventilation gas in the vertical direction. The shape of the ventilation pipe used in the present invention may be, for example, a ring shape having a plurality of ventilation holes, a spiral shape, or an arbitrary shape such as a single nozzle. The location of the ventilation pipe around the upper part of the stirring blade (upper stage ventilation pipe) should be located near the inner wall of the fermenter near the upper part of the stirring blade where the descending flow of the fermented liquid starts to ensure uniform gas supply. It is effective. It is also possible to add a ventilation pipe at any position in the downflow.

【0011】本発明に用いる攪拌翼には、高粘性な発酵
液の攪拌混合に用いることができる、ゲート翼やアンカ
ー翼などの大型翼が適用できる。特に、下部が板状の大
型パドルとなっており、その上部が格子状のグリッド部
となっている攪拌翼が、発酵液の全循環流を発生し、且
つ高粘性な発酵液を細分化する機能を有するので好適で
ある。
The stirring blade used in the present invention may be a large blade such as a gate blade or an anchor blade that can be used for stirring and mixing a highly viscous fermented liquid. In particular, the lower part is a large paddle with a plate shape, and the upper part is a grid-shaped grid part, and the stirring blades generate the entire circulation flow of the fermented liquid and subdivide the highly viscous fermented liquid. It is preferable because it has a function.

【0012】[0012]

【作用】発酵槽の底部(下段)と攪拌翼上部周辺(上
段)に、それぞれ通気管を配置し、上段の通気管は複数
の通気孔が鉛直方向に通気ガスを吐出するように設けら
れているので、上段の通気管から供給された気泡は他の
気泡と合一されにくく、発酵液の下降流に同伴して下降
し、下段と上段の通気管により発酵槽内の高粘性な発酵
液全体への均一な酸素供給が可能となる。
[Function] Ventilation pipes are arranged at the bottom (lower stage) of the fermenter and around the upper part of the stirring blade (upper stage), and the ventilation pipes at the upper stage are provided with a plurality of ventilation holes so that the ventilation gas is discharged vertically. As a result, the bubbles supplied from the upper ventilation tube are less likely to combine with other bubbles, and descend along with the downward flow of the fermentation liquor. It becomes possible to supply oxygen uniformly to the whole.

【0013】また、発酵槽の底部に設けられた前記通気
管は、複数の通気孔が攪拌翼に向けて通気ガスを吐出す
るように設けられているので、吐出された気泡は小さく
破断される。
Further, since the ventilation pipe provided at the bottom of the fermentation tank is provided with a plurality of ventilation holes so as to discharge the ventilation gas toward the stirring blade, the discharged bubbles are broken into small pieces. .

【0014】[0014]

【実施例】図2は本発明の実施例の攪拌型発酵槽であ
る。図2中の11は発酵槽であり、微生物の生育環境を
均一にするために、発酵槽11の内部には攪拌軸14に
取り付けられた回転可能な攪拌翼13が設けられてい
る。発酵槽11の外部に設けられた駆動部12により、
攪拌軸14を通じて攪拌翼13が回転することによっ
て、発酵槽11の内部の高粘性な発酵液17の攪拌が行
なわれる。この攪拌翼13の構造は、その下部が板状の
大型パドルとなっており、発酵槽11内の全循環流を発
生する機能を有し、その上部が格子状のグリッド部とな
って高粘性な発酵液17を細分化する機能を有する。
EXAMPLE FIG. 2 shows a stirring type fermenter according to an example of the present invention. Reference numeral 11 in FIG. 2 is a fermenter, and in order to make the growth environment of microorganisms uniform, a rotatable stirring blade 13 attached to a stirring shaft 14 is provided inside the fermentation tank 11. By the drive unit 12 provided outside the fermenter 11,
By rotating the stirring blade 13 through the stirring shaft 14, the highly viscous fermented liquid 17 inside the fermenter 11 is stirred. The structure of this stirring blade 13 has a large plate-shaped paddle in the lower part, has a function of generating the entire circulation flow in the fermenter 11, and an upper part thereof becomes a grid-shaped grid part with high viscosity. It has a function of subdividing the fermented liquid 17.

【0015】発酵槽11内の底部には、通気ガスを発酵
槽11内へ供給するためのリング状の通気管15が配置
されており、その通気管15には攪拌翼13に向けて開
口した複数の通気孔が穿たれている。発酵槽11の外部
の通気ガス入り口16を通じて通気ガスが前記通気管1
5の通気孔から気泡として発酵液17中に導入される。
導入された通気ガスは、通気管15からその上部にある
攪拌翼13に向けて吐出される。
A ring-shaped ventilation pipe 15 for supplying a ventilation gas into the fermentation tank 11 is arranged at the bottom of the fermentation tank 11, and the ventilation pipe 15 is opened toward the stirring blade 13. Multiple vent holes are drilled. The ventilation gas is introduced through the ventilation gas inlet 16 outside the fermentation tank 11 into the ventilation pipe 1
It is introduced into the fermentation liquor 17 as air bubbles from the vent hole of No. 5.
The introduced ventilation gas is discharged from the ventilation pipe 15 toward the stirring blade 13 above the ventilation pipe 15.

【0016】本実施例においては、攪拌翼13の上部周
辺の発酵槽11内の壁近傍にリング状の通気管18が配
置されている。発酵液の流れが下降し始める方向に気泡
が吐出されるように、この配管には下向きに複数の通気
孔が穿たれている。発酵槽11の外部の通気ガス入り口
19を通じて通気ガスが通気管18の通気孔から気泡と
して発酵液17中に導入される。
In this embodiment, a ring-shaped ventilation pipe 18 is arranged near the wall inside the fermenter 11 around the upper part of the stirring blade 13. A plurality of ventilation holes are formed downward in this pipe so that air bubbles are discharged in the direction in which the flow of the fermentation liquid begins to descend. Vent gas is introduced into the fermented liquid 17 as bubbles from the vent holes of the vent pipe 18 through the vent gas inlet 19 outside the fermenter 11.

【0017】上記攪拌型発酵槽を用いた高粘性発酵液の
模擬液としてカルボキシメチルセルロース(CMC)水
溶液を用いて本発明の攪拌型発酵槽の通気攪拌効果を検
証した。 実験条件は以下の通りとした。 発酵槽:実容量23.3l(内径290mm) 通気管:上段 → 内径250mm 下段 → 内径174mm 通気量:23.3l/min(1VVM) 攪拌翼:マックスブレンド翼(登録商標:住友重機械工
業株式会社製、ボトムパドル部とグリッド部とからなる
攪拌翼) 所要動力:1kw/m3 邪魔板(バッフル):無 発酵模擬液:CMC水溶液 100cp 及び 100
0cp 温 度:30℃ 上記条件で、通気管下段のみの場合と通気管上下2段の
場合について酸素供給性能を総括酸素移動容量計数kL
・aを測定することにより比較検討した。このkL・a
は発酵槽の酸素移動能を表す目安となるもので、同じ条
件ではkL ・aの大きい方が酸素移動の能力が大きいこ
とを示し、発酵槽の通気攪拌効果を定量的に表すものと
して利用されている。気相から液相への酸素移動は次式
(1)で代表される。
The aeration and stirring effect of the stirring fermenter of the present invention was verified by using an aqueous solution of carboxymethyl cellulose (CMC) as a simulated liquid of a highly viscous fermentation liquid using the above stirring fermenter. The experimental conditions were as follows. Fermenter: Actual capacity 23.3 l (inner diameter 290 mm) Vent pipe: Upper stage → Inner diameter 250 mm Lower stage → Inner diameter 174 mm Aeration rate: 23.3 l / min (1 VVM) Stirring blade: Maxblend blade (registered trademark: Sumitomo Heavy Industries, Ltd. Made, stirring blade consisting of bottom paddle part and grid part) Required power: 1 kw / m 3 Baffle: No fermentation simulation liquid: CMC aqueous solution 100 cp and 100
0 cp Temperature: 30 ° C Under the above conditions, the oxygen supply performance is summarized for the case with only the lower stage of the vent pipe and the case with the upper and lower stages of the vent pipe.
-Comparison was made by measuring a. This kL · a
Is a measure of the oxygen transfer capacity of the fermenter. Under the same conditions, the larger kL · a indicates that the oxygen transfer capacity is larger, and is used as a quantitative expression of the aeration and stirring effect of the fermenter. ing. Oxygen transfer from the gas phase to the liquid phase is represented by the following equation (1).

【0018】[0018]

【数1】 [Equation 1]

【0019】ここで、CL は培養液中の溶存酸素濃度、
tは時間、dCL /dtは酸素移動速度、kL は境界膜
の酸素移動係数、aは単位面積当りの気液界面積、C*
は気泡の酸素分圧と平衡な溶存酸素濃度である。通常、
発酵系のkL とaを測定することはたいへん困難なこと
であるから、この2項を掛け合わせたkL ・aを酸素移
動容量係数と呼んで用いられている。
Here, C L is the dissolved oxygen concentration in the culture solution,
t is time, dC L / dt is the oxygen transfer rate, k L is the oxygen transfer coefficient of the boundary film, a is the gas-liquid interface area per unit area, C *
Is the dissolved oxygen concentration in equilibrium with the oxygen partial pressure of the bubble. Normal,
Since it is very difficult to measure kL and a of the fermentation system, kL · a obtained by multiplying these two terms is used as the oxygen transfer capacity coefficient.

【0020】上段の通気管の設定位置は攪拌翼上端から
鉛直方向に0.05D(D:発酵槽内径)下方で、半径
方向に攪拌軸から0.4Dの位置とした。なお、翼によ
って最適設定位置は若干異なり、本設定位置(0.05
D,0.4D)に限定されるものではない。kL ・aは
亜硫酸ソーダにより測定した。そのkL ・aの測定結果
を次の表1に示す。
The upper vent tube was set at a position 0.05D (D: inner diameter of the fermentation tank) vertically below the upper end of the stirring blade, and 0.4D from the stirring shaft in the radial direction. The optimum setting position differs slightly depending on the wing, and this setting position (0.05
D, 0.4D). kL · a was measured with sodium sulfite. The measurement results of kL · a are shown in Table 1 below.

【0021】[0021]

【表1】 [Table 1]

【0022】表1によれば、本発明による上下2段の通
気方法によって攪拌を行なうことにより、従来法より酸
素供給能が高いことが明らかである。
From Table 1, it is apparent that the oxygen supply ability is higher than that of the conventional method by performing the agitation by the upper and lower two-stage aeration method according to the present invention.

【0023】[0023]

【発明の効果】本発明によれば、発酵槽の底部(下段)
と攪拌翼上部周辺(上段)に、それぞれ通気管を配置し
たので、上段の通気管から供給された気泡は他の気泡と
合一されにくく、発酵液の下降流に同伴して下降し、下
段と上段の通気管により発酵槽内の高粘性な発酵液全体
への均一な酸素供給が可能となる。
EFFECTS OF THE INVENTION According to the present invention, the bottom of the fermenter (lower stage)
Since the ventilation pipes are placed around the upper part of the stirring blade and the upper part of the stirring blade, it is difficult for the bubbles supplied from the upper ventilation pipe to coalesce with other bubbles. With the upper vent pipe, it is possible to uniformly supply oxygen to the whole highly viscous fermentation liquid in the fermenter.

【図面の簡単な説明】[Brief description of drawings]

【図1】従来の攪拌型発酵槽である。FIG. 1 is a conventional stirred fermenter.

【図2】本発明の実施例の攪拌型発酵槽である。FIG. 2 is a stirred fermenter according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

11 発酵槽 12 駆動部 13 攪拌翼 14 攪拌軸 15,18 通気管 16,19 通気ガス入口 17 発酵液 11 Fermenter 12 Drive part 13 Stirring blade 14 Stirring shaft 15,18 Vent pipe 16,19 Vent gas inlet 17 Fermentation liquid

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 攪拌翼を有する通気攪拌型発酵槽におい
て、発酵槽の底部と攪拌翼上部周辺に、それぞれ通気管
を配置したことを特徴とする通気攪拌型発酵槽。
1. An aeration and stirring type fermenter having a stirring blade, wherein ventilation pipes are arranged around the bottom of the fermentation tank and around the upper portion of the stirring blade.
【請求項2】 発酵槽の底部に設けられた前記通気管
は、複数の通気孔が攪拌翼に向けて通気ガスを吐出する
ように設けられている請求項1記載の通気攪拌型発酵
槽。
2. The aeration and stirring type fermentation tank according to claim 1, wherein the ventilation pipe provided at the bottom of the fermentation tank is provided with a plurality of ventilation holes so as to discharge the ventilation gas toward the stirring blades.
【請求項3】 攪拌翼上部周辺に設けられた前記通気管
は、複数の通気孔が鉛直方向に通気ガスを吐出するよう
に設けられている請求項1または2記載の通気攪拌型発
酵槽。
3. The aeration-stirring-type fermentation tank according to claim 1, wherein the aeration pipe provided around the upper part of the stirring blade is provided with a plurality of ventilation holes so as to discharge the aeration gas in a vertical direction.
JP8345893A 1993-04-09 1993-04-09 Stirred fermenter Expired - Fee Related JP2776723B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8345893A JP2776723B2 (en) 1993-04-09 1993-04-09 Stirred fermenter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8345893A JP2776723B2 (en) 1993-04-09 1993-04-09 Stirred fermenter

Publications (2)

Publication Number Publication Date
JPH06292558A true JPH06292558A (en) 1994-10-21
JP2776723B2 JP2776723B2 (en) 1998-07-16

Family

ID=13803024

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8345893A Expired - Fee Related JP2776723B2 (en) 1993-04-09 1993-04-09 Stirred fermenter

Country Status (1)

Country Link
JP (1) JP2776723B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006034235A (en) * 2004-07-29 2006-02-09 Fukuoka Prefecture Shoyu Jozo Kyodo Kumiai Culture apparatus of polymer compound-producing microorganism and culture method
JP2012191901A (en) * 2011-03-17 2012-10-11 Mitsubishi Rayon Co Ltd Stirring type culture tank
JP2015096251A (en) * 2013-11-15 2015-05-21 佐竹化学機械工業株式会社 Stirring device
JP2018027544A (en) * 2017-11-27 2018-02-22 佐竹化学機械工業株式会社 Agitation device
CN108285862A (en) * 2018-04-18 2018-07-17 中国农业科学院农业资源与农业区划研究所 Microbial ferment device
CN108315214A (en) * 2018-04-17 2018-07-24 天津市职业大学 Visualize biological fermentation device
JP2019111535A (en) * 2019-04-19 2019-07-11 佐竹化学機械工業株式会社 Agitation device
CN110055167A (en) * 2019-06-10 2019-07-26 山东川大机械设备有限公司 Biogas fermentation jar agitator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006034235A (en) * 2004-07-29 2006-02-09 Fukuoka Prefecture Shoyu Jozo Kyodo Kumiai Culture apparatus of polymer compound-producing microorganism and culture method
JP2012191901A (en) * 2011-03-17 2012-10-11 Mitsubishi Rayon Co Ltd Stirring type culture tank
JP2015096251A (en) * 2013-11-15 2015-05-21 佐竹化学機械工業株式会社 Stirring device
JP2018027544A (en) * 2017-11-27 2018-02-22 佐竹化学機械工業株式会社 Agitation device
CN108315214A (en) * 2018-04-17 2018-07-24 天津市职业大学 Visualize biological fermentation device
CN108285862A (en) * 2018-04-18 2018-07-17 中国农业科学院农业资源与农业区划研究所 Microbial ferment device
JP2019111535A (en) * 2019-04-19 2019-07-11 佐竹化学機械工業株式会社 Agitation device
CN110055167A (en) * 2019-06-10 2019-07-26 山东川大机械设备有限公司 Biogas fermentation jar agitator

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