CN201300057Y - Self-priming stirred reactor - Google Patents
Self-priming stirred reactor Download PDFInfo
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- CN201300057Y CN201300057Y CNU2008201681289U CN200820168128U CN201300057Y CN 201300057 Y CN201300057 Y CN 201300057Y CN U2008201681289 U CNU2008201681289 U CN U2008201681289U CN 200820168128 U CN200820168128 U CN 200820168128U CN 201300057 Y CN201300057 Y CN 201300057Y
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- paddle
- priming
- branch pipe
- mixing reactor
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Abstract
The utility model relates to a self-priming stirred reactor, which comprises a cylinder body and a stirring device mounted in the middle of the cylinder body. The self-priming stirred reactor is characterized in that the stirring device comprises a hollow stirring shaft with an air inlet hole; a self-priming stirring paddle and a lower layer stirring paddle are connected and arranged in sequence on the lower part of the hollow stirring shaft, an air outlet branch pipe is connected and arranged on the self-priming agitating paddle, and the air outlet branch pipe is communicated with the hollow stirring shaft. In the utility model, the air outlet branch pipe for dispersing air is additionally arranged on the self-priming stirring paddle, an up-push axial flow paddle serves as the lower layer stirring paddle, and a full baffle plate structure is adopted; the three measures can reduce the critical rotation speed of the inhaled air in varying degrees and increase the inhaled air quantity, the gas-liquid contact is good, the mass transfer efficiency is improved, so that the coordination of the stirring rotation speed and the stirring energy consumption is simplified, and the yield of the product is remarkably improved.
Description
Technical field
The utility model relates to a kind of self-suction mixing reactor, is particularly useful for solution-air and gas-liquid-solid heterogeneous reaction process.
Background technology
Solution-air and gas-liquid-solid heterogeneous stirred reactor are the very important reactors of a class, and often need be distributed to the gas of reactor head again in the liquid phase, to improve reaction rate and gas effciency.Self-Priming Gas-Liquid Reactor be a kind of need not be extra gas conveying machinery and the sucting reaction device upper space gas reaction unit that carries out gas-liquid contact voluntarily, self-priming paddle by particular design constantly sucks extraneous gas when carrying out the feed liquid mixing, reach the purpose of Gas-Liquid Dispersion, reaction.Yet an important feature of self-priming paddle is, has only when speed of agitator to reach critical speed when above, just have gas and suck and be distributed to liquid, and the high more gas soakage of rotating speed is big more; When rotating speed subcritical rotating speed, work just as common paddle, there is not gas to suck.Compare with the reactor of gas outer circulation, this is its weak point.
At present the described self-priming paddle of domestic and international various patents all adopts hollow impeller, venthole on impeller, oar type structure more complicated.And venthole is placed on the impeller, for certain impeller diameter, corresponding critical speed is also fixed.Especially for the less reactor of impeller diameter, the critical speed that gas sucks is just very high.Along with the increase of self-priming impeller submergence, critical speed increases, and the gas soakage reduces.So for the self-priming reactor of double-deck oar, in order to suck more gas, self-priming oar as the upper strata oar.To rely on the overall flow of liquid phase like this, could be distributed to bubble in the space of still bottom.As designing improperly, the gas holdup of still bottom is far below the gas holdup on still top.
Existing patent report is not studied the influence of lower floor's oar, does not study the influence of baffle plate to critical speed and inspiratory capacity yet.For gas-liquid-solid three-phase stirred reactor, end support often is not set in order to prevent particle from stopping up bearing, cause running stable inadequately, and fragile; And air admission hole is all established at grade, and the intensity of shaft is descended.
The utility model content
At the above-mentioned problems in the prior art, the utility model purpose is to provide that a kind of critical speed is low, inspiratory capacity big, the self-suction mixing reactor of good mixing effect.
Described self-suction mixing reactor, comprise cylindrical shell and be installed in the middle agitating device of cylindrical shell, it is characterized in that described agitating device comprises the hollow shaft of bringing pore into, hollow shaft bottom connects successively self-priming paddle, lower floor's paddle is set, the connection of self-priming paddle place sets out gas branch pipe, goes out gas branch pipe and is communicated with hollow shaft.
Described self-suction mixing reactor is characterized in that being equipped with in the cylindrical shell one group of baffle plate, and the outside of baffle plate and cylinder inboard wall gap are connected and fixed.
Described self-suction mixing reactor is characterized in that lower floor's paddle is last pushing-type axial flow oar.
Described self-suction mixing reactor is characterized in that the hollow shaft lower end and the end support of the bottom that is arranged on cylindrical shell flexibly connect.
Described self-suction mixing reactor is characterized in that gas branch pipe is arranged in the middle part of self-priming paddle.
Described self-suction mixing reactor it is characterized in that the end of gas branch pipe sets out pore, and its pipe end is cut sth. askew downwards.
Described self-suction mixing reactor is characterized in that being equipped with two groups or more air admission hole on the different sagittal planes, hollow shaft top, connects around the air admission hole reinforcing ring is set.
Described self-suction mixing reactor is characterized in that the distance of lower floor's paddle and self-priming paddle is not more than 1.5 times of oar footpaths, and the length that goes out gas branch pipe is 1.3-2.5 times of self-priming paddle oar footpath.
Described self-suction mixing reactor, the length that it is characterized in that gas branch pipe are 1.8 times of self-priming paddle oar footpath.
Self-priming paddle of the present utility model place adds and disperses going out gas branch pipe, using pushing-type axial flow oar as lower floor's paddle and adopt full baffle arrangement of gas, these three kinds of measures are all reducing the critical speed that gas begins to suck in varying degrees, and increased the gas soakage, the gas-liquid contact is good, mass-transfer efficiency improves, the coordination of speed of agitator, stirring energy consumption is become simply, thereby the yield of product is significantly improved.
Description of drawings
Fig. 1 is the structural representation of the utility model self-suction mixing reactor.
Fig. 2 is the oblique leaf paddle structure schematic diagram that self-priming paddle adopts in the utility model.
Fig. 3 is the push-paddle structural representation that self-priming paddle adopts in the utility model.
Fig. 4 is the turbine type paddle structure schematic diagram that self-priming paddle adopts in the utility model.
Among the figure: support, 5-lower floor paddle, 6-go out gas branch pipe, the self-priming paddle of 7-, 8-air admission hole at the bottom of 1-cylindrical shell, the hollow shaft of 2-, 3-baffle plate, the 4-.
The specific embodiment
The utility model is described in further detail below in conjunction with Figure of description:
As shown in Figure 1, this self-suction mixing reactor, comprise cylindrical shell 1 and be installed in agitating device in the middle of the cylindrical shell 1, described agitating device comprises the hollow shaft 2 of bringing pore 8 into, hollow shaft 2 bottoms connect successively self-priming paddle 7, lower floor's paddle 5 are set, the connection of self-priming paddle 7 places sets out gas branch pipe 6, goes out gas branch pipe 6 and is communicated with hollow shaft 2, and hollow shaft 2 lower ends are supported 4 with the end of the bottom that is arranged on cylindrical shell 1 and flexibly connected.
The hollow shaft 2 of this self-suction mixing reactor stirs by the driven by motor rotation, the gas on cylindrical shell 1 top sucks from air admission hole 8, through hollow shaft 2 with go out gas branch pipe 6 and enter in the liquid phase, the shear action of blade makes bubble further broken, bubble is distributed to the diverse location of reactor with the liquid phase overall flow, realizes the haptoreaction of gas-liquid.
As shown in Figure 1, go out the middle part that gas branch pipe 6 is arranged in self-priming paddle 7, the end sets out pore, and its pipe end is cut sth. askew downwards.In the utility model, the number that goes out gas branch pipe 6 is preferably 6-9, and the length that goes out gas branch pipe 6 is 1.8 times of self-priming paddle 7 oars footpath.Go out gas branch pipe 6 also can be arranged on self-priming paddle 7 according to different situations downside.
Lower floor's paddle 5 is last pushing-type axial flow oar, and is not more than 1.5 times of oars footpaths with the distance of self-priming paddle 7.Hollow shaft 2 tops are equipped with air admission hole 8 on the different sagittal planes, connect around the air admission hole 8 reinforcing ring is set.The gross area of air admission hole 8 is not less than the gross area of venthole in the utility model, also two groups or more can be set according to different situations, every group of two or more multi-form air admission hole 8.
As shown in Figure 1, be equipped with one group of baffle plate 3 in the cylindrical shell 1, it is 1/3rd of baffle plate 3 thickness that the outside of baffle plate 3 and cylindrical shell 1 inwall gap are connected and fixed described gap.In the utility model, the uniform setting of baffle plate 3 preferred 4-6 pieces.
Critical component of the present utility model is a self-priming paddle 7 of taking gas branch pipe 6 out of, and the kinetic energy of venthole place liquid increased and pressure decline when it rotated in liquid.Pressure differential between venthole place liquid and cylindrical shell 1 headspace gas is exactly the power that gas sucks.The length and the structure that go out gas branch pipe 6 can be regulated, and are easy to solve the inspiratory capacity that exists in the prior art and the coordination problem of speed of agitator.The gas on cylindrical shell 1 top sucks from air admission hole 8, through hollow shaft 2 with go out gas branch pipe 6 and enter in the liquid phase.The shear action of blade makes bubble further broken, and bubble is distributed to the diverse location of reactor with the liquid phase overall flow.
Lower floor's paddle 5 has not only determined the deployment conditions of bubble in cylindrical shell 1 lower space, and the gas soakage of self-priming impeller is had a significant impact.Use pushing-type axial flow oar and as lower floor's paddle 5 inspiratory capacity of self-priming oar is increased more than 30%, the increase of the more little then gas of oar spacing soakage is many more.Best combination is to adopt the mixing part of press-down type oblique leaf turbine oar (PBTD) as self-priming paddle 7, the length that symmetry goes out gas branch pipe 6 is the oar footpath of 1.8 times self-priming paddle 7, adopt top uncoupling type oblique leaf turbine oar or on carry pusher paddle as lower floor's paddle 5, the oar of lower floor's paddle 5 footpath is more than or equal to the oar footpath of self-priming paddle 7.The blade-section of self-priming paddle can change according to the needs that stir, and Fig. 2, Fig. 3, Fig. 4 have represented that for example impeller is the structure situation of oblique leaf oar, push-paddle and turbine type oar.
In order to improve the intensity of hollow shaft 2, air admission hole 8 is not all opened at grade.Can be positioned at same plane by three air admission holes 8, three air admission holes 8 are positioned at another plane in addition.Stagger in air admission hole 8 positions, reinforcement is carried out on two perforate planes respectively.
Baffle plate 3 adopts full baffle arrangement that critical speed is descended, and the gas soakage improves.Hollow shaft 2 bottoms set up the end to support 4, and the stability when the raising agitator runs up also helps the maximization of cylindrical shell 1 simultaneously.This reactor optionally can be provided with chuck, interior heat exchange coil as heat exchanger components.In addition, also set up the safety device that comprises safety valve, rupture disk at certain operating pressure.
Below be cold mould research of the present utility model:
Carry out the experiment of cold mould in the lucite still of diameter 0.4m volume 84L, the self-priming oar of finding to take out of gas branch pipe is at half above than the critical speed of the self-priming oar of turbine of MZX type reactor, and inspiratory capacity approximately is its two times.As lower floor's oar, make inspiratory capacity further increase 40%-50% with the top uncoupling type paddle.Above-mentioned phenomenon has been carried out deep theoretical research, and set up half theoretical model of critical speed and inspiratory capacity, coincide good with experimental result.
Prove by Hydrodynamics Theory, for any type of self-priming paddle, add gas suck, with the top uncoupling type paddle as lower floor's oar, adopt full baffle arrangement, these three kinds of measures all can reduce the critical speed that gas begins to suck in varying degrees and increase the gas soakage.Find that all reactor diameter is big more from theoretical and experiment, these advantages are obvious more.
Below for adopting several example of the present utility model relatively:
Example 1
Diameter 0.7m dischargeable capacity is the dichloro-benzenes potassium hydrochlorate carboxylation reaction device of 200L, adopts the twayblade blade impeller to stir rotating speed 200rpm, 16 hours reaction time.Adopt self-priming stirring gas-liquid reactor, the following reaction time of situation that rotating speed is constant shortens to 8 hours, and the accessory substance minimizing, thereby consumption of raw materials has descended 30%.
Example 2
Dischargeable capacity is the chlorophenesic acid sylvite carboxylation reaction device of 10000L, adopts the twayblade blade impeller to stir rotating speed 200rpm, 18 hours reaction time.Adopt self-priming stirring gas-liquid reactor, the following reaction time of situation that rotating speed is constant shortens to 9 hours, and the accessory substance minimizing, thereby consumption of raw materials has descended 30%.
Example 3
Dischargeable capacity is the chlorophenesic acid sylvite carboxylation reaction device of 1000ML, adopts the twayblade blade impeller to stir rotating speed 450rpm, 16 hours reaction time.Adopt self-priming stirring gas-liquid reactor, the following reaction time of situation of rotating speed 200rpm shortens to 9 hours, does not have tar to produce substantially, and consumption of raw materials has descended 20%.
In sum, the utility model is fully grasped the air-breathing rule of control, makes the coordination of inspiratory capacity and speed of agitator, stirring energy consumption become simple, the gas-liquid contact is good, and mass-transfer efficiency improves greatly, and chemical reaction is more complete, thereby shortened the reaction time greatly, the yield of product is significantly improved; And the form that blade stirs do not limit, and can adapt to the different needs that stir fully.
Claims (9)
1. self-suction mixing reactor, comprise cylindrical shell (1) and be installed in the middle agitating device of cylindrical shell (1), it is characterized in that described agitating device comprises the hollow shaft (2) of bringing pore (8) into, hollow shaft (2) bottom connects successively self-priming paddle (7), lower floor's paddle (5) is set, self-priming paddle (7) is located to connect and is set out gas branch pipe (6), goes out gas branch pipe (6) and is communicated with hollow shaft (2).
2. self-suction mixing reactor as claimed in claim 1 is characterized in that being equipped with in the cylindrical shell (1) one group of baffle plate (3), and the outside of baffle plate (3) and cylindrical shell (1) inwall gap are connected and fixed.
3. self-suction mixing reactor as claimed in claim 1 is characterized in that lower floor's paddle (5) is last pushing-type axial flow oar.
4. self-suction mixing reactor as claimed in claim 1 is characterized in that hollow shaft (2) lower end and the end support (4) of the bottom that is arranged on cylindrical shell (1) flexibly connect.
5. self-suction mixing reactor as claimed in claim 1 is characterized in that gas branch pipe (6) is arranged in the middle part of self-priming paddle (7).
6. self-suction mixing reactor as claimed in claim 1 it is characterized in that the end of gas branch pipe (6) sets out pore, and its pipe end is cut sth. askew downwards.
7. self-suction mixing reactor as claimed in claim 1 is characterized in that being equipped with two groups or more air admission hole (8) on the different sagittal planes, hollow shaft (2) top, connects around the air admission hole (8) reinforcing ring is set.
8. self-suction mixing reactor as claimed in claim 1 is characterized in that the lower floor's paddle (5) and the distance of self-priming paddle (7) are not more than 1.5 times of oar footpaths, and the length that goes out gas branch pipe (6) is 1.3-2.5 times of self-priming paddle (7) oar footpath.
9. self-suction mixing reactor as claimed in claim 1, the length that it is characterized in that gas branch pipe (6) are 1.8 times of self-priming paddle (7) oar footpath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201681289U CN201300057Y (en) | 2008-11-27 | 2008-11-27 | Self-priming stirred reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201681289U CN201300057Y (en) | 2008-11-27 | 2008-11-27 | Self-priming stirred reactor |
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| CN201300057Y true CN201300057Y (en) | 2009-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201681289U Expired - Lifetime CN201300057Y (en) | 2008-11-27 | 2008-11-27 | Self-priming stirred reactor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101972624A (en) * | 2010-11-09 | 2011-02-16 | 南京协和助剂有限公司 | Combined stirred tank reactor |
| CN101444715B (en) * | 2008-11-27 | 2011-07-06 | 华东理工大学 | Self-suction mixing reactor |
| CN103446910A (en) * | 2013-09-02 | 2013-12-18 | 无锡恒诚硅业有限公司 | Pulping stirrer |
| CN105289376A (en) * | 2015-11-18 | 2016-02-03 | 华文蔚 | Paraffin oil stirring and separating tower |
| CN106345377A (en) * | 2016-08-24 | 2017-01-25 | 叶青 | Self-suction type reactor of reaction kettle |
| CN108502857A (en) * | 2018-04-28 | 2018-09-07 | 江苏宝盛龙城药业有限公司 | The synthesis technology of sulphamide |
| CN110559915A (en) * | 2019-09-25 | 2019-12-13 | 江苏国胶新材料有限公司 | washing equipment for isooctyl acrylate and use method thereof |
| CN114965852A (en) * | 2021-02-25 | 2022-08-30 | 中国石油天然气股份有限公司 | Ethylene gas phase polymerization evaluation test device |
-
2008
- 2008-11-27 CN CNU2008201681289U patent/CN201300057Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444715B (en) * | 2008-11-27 | 2011-07-06 | 华东理工大学 | Self-suction mixing reactor |
| CN101972624A (en) * | 2010-11-09 | 2011-02-16 | 南京协和助剂有限公司 | Combined stirred tank reactor |
| CN103446910A (en) * | 2013-09-02 | 2013-12-18 | 无锡恒诚硅业有限公司 | Pulping stirrer |
| CN103446910B (en) * | 2013-09-02 | 2015-03-25 | 无锡恒诚硅业有限公司 | Pulping stirrer |
| CN105289376A (en) * | 2015-11-18 | 2016-02-03 | 华文蔚 | Paraffin oil stirring and separating tower |
| CN106345377A (en) * | 2016-08-24 | 2017-01-25 | 叶青 | Self-suction type reactor of reaction kettle |
| CN108502857A (en) * | 2018-04-28 | 2018-09-07 | 江苏宝盛龙城药业有限公司 | The synthesis technology of sulphamide |
| CN108502857B (en) * | 2018-04-28 | 2021-04-27 | 江苏宝盛龙城药业有限公司 | Synthesis process of sulfamide |
| CN110559915A (en) * | 2019-09-25 | 2019-12-13 | 江苏国胶新材料有限公司 | washing equipment for isooctyl acrylate and use method thereof |
| CN114965852A (en) * | 2021-02-25 | 2022-08-30 | 中国石油天然气股份有限公司 | Ethylene gas phase polymerization evaluation test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090902 Effective date of abandoning: 20081127 |