CN1171990C - Gas-lifting recirculating reactor with more concentric guide barrels - Google Patents
Gas-lifting recirculating reactor with more concentric guide barrels Download PDFInfo
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- CN1171990C CN1171990C CNB021294836A CN02129483A CN1171990C CN 1171990 C CN1171990 C CN 1171990C CN B021294836 A CNB021294836 A CN B021294836A CN 02129483 A CN02129483 A CN 02129483A CN 1171990 C CN1171990 C CN 1171990C
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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
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
- C12M29/06—Nozzles; Sprayers; Spargers; Diffusers
- C12M29/08—Air lift
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Abstract
The present invention relates to a structural design of a gas lifting type circulating reactor, particularly to a low high diameter ratio gas lifting type circulating reactor with a plurality of concentric flow-guiding barrels. In the structural mode of the present invention, a plurality of flow-guiding barrels are concentrically arranged, gas spraying nozzles are arranged at intervals, and a plurality of liquid lifting flow areas and liquid lowering flow areas arranged at intervals can be formed by the gas spraying nozzles distributed at intervals in an inner flow field of the reactor. Compared with the prior art, the present invention further increases the local high diameter ratio of the reactor and enhances mass transfer performance, and the present invention also greatly reduces the requirement of the large high diameter ratio of the traditional gas lifting type circulating reactor. The present invention can conveniently convert the traditional mechanical stirring tank structure into the low high diameter ratio gas lifting type circulating reactor structure, the present invention has a simple technology and greatly reduces appliance expense, and the present invention can also meet the requirement of most fermentation technologies. Simultaneously, when the present invention is adopted, the scale of the reactor can not be limited.
Description
Technical field
The present invention relates to a kind of bio-reactor, relate in particular to a kind of structure design of Airlift circulating reactor, belong to biochemical industry and fermentation industry technical field.
Background technology
Advantages such as that Airlift circulating reactor has is simple in structure, the mass-and heat-transfer performance is good, energy consumption is low, the pair cell damage is little obtain application more and more widely in biochemical industry especially fermentation industry.The industrial application statistics shows, compares average energy-conservation 30% with traditional mechanical stirring fermentation reactor of identical scale.But the present industrial widely used mechanical agitation type fermentation reactor that is still, therefore these mechanical stirring fermentation reactors being transform as Airlift circulating reactor becomes a very problem of reality.
In order to obtain good circulation effect and higher mass-transfer performance, the aspect ratio of traditional Airlift circulating reactor need reach more than 7, and the aspect ratio of present widely used mechanical stirring fermentation reactor only is 2～3 usually, and this is the technical bottleneck that stirred pot transform airlift reactor as.In addition, for the Airlift circulating reactor of large volume, too high aspect ratio makes that dress liquid liquid level is too high, thus the corresponding increase of energy consumption.Therefore, be necessary to explore the practicality and the feasibility of low ratio of height to diameter Airlift circulating reactor.
China's utility model patent (patent No.: 96243397.7) disclose a kind of " low ratio of height to diameter gas circulation bioreactor ", this reactor adopts urceolus and single inner draft tube, and improve and mix and mass-transfer performance by specially designed nozzle and baffle plate are set, but because the complex structural designs of this kind reactor, the scrap build expense increases, and is not suitable for the transformation of mechanically stirred reactor.Sweet just like waiting people in " research of low ratio of height to diameter jet-type loop reactor structure " [" chemical reaction engineering and technology ", 1999,15 (3)] in, proposed the structure formation of multiple draft tubes, the structure of discovery multiple draft tubes can be improved reactor effectively and cross the low problem of gas effciency that low ratio of height to diameter brings.In this jet-type loop reactor, adopted 4 guide shells to be arranged in parallel, increased the local aspect ratio in the reactor to a certain extent, but four guide shell inside all are to rise the liquid zone, and the guide shell outside has only one to fall the liquid zone, thereby the reactor bubble that falls the liquid zone is held rate and is not significantly increased.Guide shell is arranged side by side, easily causes guide shell to fall local flow dead angle, liquid flow zone territory outward.In addition, low ratio of height to diameter jet-type loop reactor liquid level can not be too high, otherwise cause the local turbulence aggravation of reactor upper flow easily, thereby the device fluid that induces reaction circulates deterioration.
Summary of the invention
The objective of the invention is to propose the concentric multiple draft tubes Airlift circulating reactor of a kind of novel low ratio of height to diameter, can effectively overcome the excessive and gordian technique defective brought of traditional Airlift circulating reactor aspect ratio, and can be used for transforming the standard machinery stirred fermentor as Airlift circulating reactor, and simple in structure, cost is low.
The objective of the invention is to be achieved through the following technical solutions: the concentric multiple draft tubes Airlift circulating reactor of a kind of low ratio of height to diameter, mainly comprise reactor urceolus, inner draft tube and contain the bottom distribution device in gas-fluid of gas jet, it is characterized in that: at least three inner draft tubes are installed in reactor urceolus inner concentric, form the annular region of a fluid flow between per two adjacent guide shells, described gas jet is installed in the alternate annular region of reactor bottom.
The Airlift circulating reactor that adopts among the present invention, adopt multiple draft tubes to put with one heart and the spaced structure formation of gas jet, make the inside reactor flow field form a plurality of rising the liquid zone and falling the liquid zone alternately by gas jet spaced apart, the local aspect ratio and the excellent mass transferring performance of reactor have not only been increased, greatly reduce the requirement of the higher aspect ratio of traditional Airlift circulating reactor, and traditional mechanical type stirred pot structural modification can easily be become the Airlift circulating reactor structure of low ratio of height to diameter, technology is simple, cost of equipment reduces greatly, and can satisfy most zymotechnique requirements; Adopt the present invention simultaneously, the reactor scale can be unrestricted.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present invention.
The structural representation of a kind of embodiment that gas jet was installed at interval when Fig. 2 adopted three guide shells for the present invention.
The structural representation of the another kind of embodiment that gas jet was installed at interval when Fig. 3 adopted three guide shells for the present invention.
Embodiment
Further specify principle of work of the present invention, concrete structure below in conjunction with accompanying drawing, and provide most preferred embodiment:
The present invention mainly comprises reactor urceolus 1, is arranged on the inner draft tube 2 of a plurality of arranged concentric in the urceolus, and is installed in the distribution device in gas-fluid 4 that reactor bottom contains gas jet 3.The concrete number of inner draft tube should be decided according to the reactor volume size, adopt and all can more than three and three, can between per two adjacent guide shells (perhaps reactor urceolus and adjacent inner draft tube), form a fluid flow annular region like this, by in reactor, spraying into gas at the alternate corresponding one group of gas jet 3 installing in flow region bottom, the circulating-area of nozzle being installed and being sprayed into gas is the upwelling district, nozzle is not installed or nozzle is installed but not jet circulating-area for falling liquid flow zone, like this, the reactor inner fluid flow to form upwelling district more than 2 and adjacent a plurality of liquid flow zones that fall, promote liquid and upwards promote along the pairing circulating-area of respective nozzle and form the upwelling district, cross the guide shell upper end then and enter adjacent circulating-area and form and fall liquid flow zone.
Every group of gas jet should evenly be arranged in bottom, corresponding circulation zone, and gas dispersion is even like this, and mass transfer effect is better.
A plurality of guide shells are installed on reactor urceolus inside, should make a plurality of circulation zone sectional area that forms equate as far as possible, thereby make fluid flow resistance less relatively.
Embodiment 1:
The research of 25 liters of low ratio of height to diameter multiple draft tubes Airlift circulating reactors
Low ratio of height to diameter multiple draft tubes Airlift circulating reactor is made with synthetic glass, and the reactor aspect ratio only is 2, in establish 3 guide shells.Urceolus diameter 242mm, effectively adorning the liquid height is 540mm, three inner draft tube height are 500mm, from inside to outside, the interior external diameter of guide shell I is respectively 80 and 90mm, and the interior external diameter of guide shell II is respectively 140 and 150mm, and the interior external diameter of guide shell III is respectively 192 and 206mm.Three inner draft tubes are separated into center flow district (1 district) and three annularly flow zones (being labeled as 2 districts from inside to outside successively, 3 districts, 4 districts) with inside reactor.Reactor bottom be to should there being 4 groups of nozzles, 6 nozzles of every group of Φ 1mm be evenly distributed on the circumference corresponding to above-mentioned 4 flow regions (from inside to outside four groups of nozzles successively label be the I group, II group, III group, IV group).By I group and the ventilation of III group nozzle, promptly central section and the 3rd district are for to rise liquid flow zone in the present embodiment, and 2,4 districts are for falling liquid flow zone.Experiment ventilation scope is 0.6cm/s～3.0cm/s.
Remove guide shell I and guide shell III, be single guide shell reactor, by I group and the ventilation of II group nozzle, can be used for contrast experiment in the present embodiment with the multiple draft tubes reactor.
Adopt the gas holdup of bed expansion method assaying reaction device, electrode response curve method assaying reaction device circular velocity, chemical oxidization method assaying reaction body amasss average mass transfer coefficient.The multiple draft tubes Airlift circulating reactor is compared with single guide shell, and gas holdup improves 10～30%, and the circulating fluid volume in the unit time improves 50～70%, and mass transfer coefficient improves 10～40%.
As can be seen, adopt the low ratio of height to diameter Airlift circulating reactor of multiple draft tubes structure can obtain circulation and mass transfer effect preferably, it is a kind of novel low ratio of height to diameter bio-reactor pattern, being applicable to the transformation of common low ratio of height to diameter mechanical agitating fermentation tank again, is a kind of bio-reactor that has prospects for commercial application.
Claims (3)
1. concentric multiple draft tubes Airlift circulating reactor of low ratio of height to diameter, mainly comprise reactor urceolus, inner draft tube and contain the bottom distribution device in gas-fluid of gas jet, it is characterized in that: at least three inner draft tubes are installed in reactor urceolus inner concentric, form the annular region of a fluid flow between per two adjacent guide shells, described gas jet is installed in the alternate annular region of reactor bottom.
2. according to the described reactor of claim 1, it is characterized in that: described gas jet is evenly arranged in bottom, respective annular zone.
3. according to claim 1 or 2 described reactors, it is characterized in that: the formed a plurality of annular region sectional areas of described a plurality of inner draft tubes equate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021294836A CN1171990C (en) | 2002-08-23 | 2002-08-23 | Gas-lifting recirculating reactor with more concentric guide barrels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021294836A CN1171990C (en) | 2002-08-23 | 2002-08-23 | Gas-lifting recirculating reactor with more concentric guide barrels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1397634A CN1397634A (en) | 2003-02-19 |
| CN1171990C true CN1171990C (en) | 2004-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021294836A Expired - Lifetime CN1171990C (en) | 2002-08-23 | 2002-08-23 | Gas-lifting recirculating reactor with more concentric guide barrels |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108025936A (en) * | 2015-09-04 | 2018-05-11 | 蒂森克虏伯工业解决方案股份公司 | Equipment with circulation flow reactor, for biological cleaning liquid |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628012A (en) * | 2015-01-12 | 2015-05-20 | 天津大学 | Production method for preparing ammonium sulfate by alkylating waste acid |
| CN106731626A (en) * | 2017-03-21 | 2017-05-31 | 烟台新瑞环保科技有限公司 | Cluster type gas lift desulfurization reactor |
| CN111502784A (en) * | 2020-04-28 | 2020-08-07 | 中国航发湖南动力机械研究所 | Air inlet volute structure |
-
2002
- 2002-08-23 CN CNB021294836A patent/CN1171990C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108025936A (en) * | 2015-09-04 | 2018-05-11 | 蒂森克虏伯工业解决方案股份公司 | Equipment with circulation flow reactor, for biological cleaning liquid |
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| Publication number | Publication date |
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| CN1397634A (en) | 2003-02-19 |
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| C14 | Grant of patent or utility model | ||
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