CN104226228A - MBS (Methyl methacrylate-Butadiene-Styrene) emulsion polymerization reaction kettle - Google Patents
MBS (Methyl methacrylate-Butadiene-Styrene) emulsion polymerization reaction kettle Download PDFInfo
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- CN104226228A CN104226228A CN201410521379.0A CN201410521379A CN104226228A CN 104226228 A CN104226228 A CN 104226228A CN 201410521379 A CN201410521379 A CN 201410521379A CN 104226228 A CN104226228 A CN 104226228A
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- reaction kettle
- kettle body
- emulsion polymerization
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Abstract
The invention relates to an MBS (Methyl methacrylate-Butadiene-Styrene) emulsion polymerization reaction kettle and belongs to the technical field of chemical equipment. The MBS emulsion polymerization reaction kettle comprises a reaction kettle body, a feeding inlet and a discharging hole; the top of the reaction kettle body is provided with a motor; a stirring shaft of a stirring device is driven by the motor to rotate; the stirring device penetrates the reaction kettle body; the end portion and the middle of the stirring shaft are provided with a stirring blade respectively; the stirring blades comprise a push type blade and a three-blade-backswept blade; the upper portion of the reaction kettle body is provided with a condensing device. The MBS emulsion polymerization reaction kettle has the advantages of being simple in structure, uniform in mixing, good in stability and high in polymerization efficiency.
Description
Technical field
The present invention relates to a kind of MBS emulsion polymerization still, belong to technical field of chemical.
Background technology
Polymerization reaction kettle is the equipment of some chemical products indispensability in suitability for industrialized production, is especially widely used in the reactor in large-scale MBS polymerization process, and its whipped form determines the efficiency of polymerisation, the stability of polymerisation and product quality.Adopt the method for emulsion polymerisation during MBS polymerization, mechanical stability during polymerization is even more important.Concerning emulsion polymerisation except recipe-imposed performance indications, technique and the structural design of reactor most important.
Traditional polymerization reaction kettle, is generally the whipped form that layer-stepping stirring, frame type stirring etc. are single, is characterized in that mixing is uneven, and the direction dynamics of stirring is mainly on horizontal level, and to liquid level at the bottom of still, various material concentration gradient difference is very large, mixes uneven; Meanwhile, the temperature difference of each point is also comparatively large, and reaction condition also differs comparatively large, and affect product quality, reactor efficiency is lower.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: provide a kind of MBS emulsion polymerization, have structure simple, mix, good stability and the high advantage of polymerization efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
Described MBS emulsion polymerization still, comprises reaction kettle body, charging aperture and discharging opening, reaction kettle body top is provided with motor, and the shaft of described driven by motor agitating device rotates; Described agitating device gos deep in reaction kettle body, is equipped with stirrer paddle in shaft end and centre position; Described stirrer paddle is pusher blade and three leaf swept-back blades; Described reaction kettle body top arranges condensing unit.
Described pusher blade and three leaf swept-back blades equidistantly spaced apart, preferred pusher blade is two groups, and three leaf swept-back blades are two groups.
Described diameter of propeller blade is 1/2nd of reaction kettle body diameter, and namely each blade tips distance reaction kettle body inwall is 1/4th of reaction kettle body diameter.
Described condensing unit is water circulation condensing unit.During MBS emulsion polymerisation, the monomer in reactor is volatile, affects polymerization efficiency and quality on the one hand, causes reacting kettle inner pressure to increase on the one hand, the water circulation condensing unit of increase, avoids the problem generation that monomer volatilization produces.
Described charging aperture is arranged on reaction kettle body top; Discharging opening is arranged on bottom reaction kettle body; Valve is provided with between bottom discharging opening and reaction kettle body.
Be provided with U-shaped chuck outside described reaction kettle body, in chuck, be provided with attemperating unit.
Pusher agitating device, working speed is higher, and for axially flowing stirring, produces larger internal circulating load, power of agitator is little, be applicable to stirring low-viscosity (mobile) liquid, emulsion and solia particle content lower than 10% suspension.Push-paddle impeller structure is simple, easily manufactured.
The front shear force of three leaf swept-back agitating devices is comparatively large, is enough to make monomer material be separated into thin dripping and also can is suspended in liquid phase uniformly, be convenient to polymerization and unlikely agglomeration is piled into block; Stir stream recirculates characteristic good, liquid can be made simultaneously to produce axis and radial motion; Carry out circulation fully to make liquid and eliminate the inhomogeneities of temperature, heat-transfer effect is good, and discharge rate is large; In still, per minute to reach 5 ~ 10 mass transfer effects good for liquid phase circulation, can make reaction uniformity in still; The change of proportion in converging operation process can be adapted to; The paddle of several layers of other pattern can be replaced with one deck stirrer paddle, make to simplify the structure easy to maintenance.
The present invention is directed to feature during MBS emulsion polymerisation, abandon traditional batch formula agitator, gate stirrer, adopt NEW TYPE OF COMPOSITE whipped form, namely adopt pusher blade and three leaf swept-back blades in agitating device simultaneously, fully utilize the advantage of two kinds of blades, both change the problem that the mixing existed in traditional agitating mode is uneven, polymerization efficiency is low, and make again reaction stability significantly improve.
The beneficial effect that the present invention has is:
The invention solves dispersion and the monomer volatilization problems of MBS emulsion polymerization device, improve the mixture homogeneity of reaction, stability and polymerisation efficiency, structure is simple, is beneficial to and realizes industrialization.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
In figure: 1, reaction kettle body; 2 charging apertures; 3, motor; 4, condensing unit; 5, chuck; 6, attemperating unit; 7, valve; 8, discharging opening; 9, shaft; 10, three leaf swept-back blades; 11, pusher blade.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described further:
As shown in Figure 1, described MBS emulsion polymerization still, comprises reaction kettle body 1, charging aperture 2 and discharging opening 8, and reaction kettle body 1 top is provided with motor 3, and described motor 3 drives the shaft 9 of agitating device to rotate; Described agitating device gos deep into, in reaction kettle body 1, being equipped with stirrer paddle in shaft 9 end and centre position; Described stirrer paddle is pusher blade 11 and three leaf swept-back blades 10; Described reaction kettle body 1 top arranges condensing unit 4.
Described pusher blade 11 and three leaf swept-back blades 10 spaced apart, pusher blade 11 is two groups, and three leaf swept-back blades 10 are two groups.
Described diameter of propeller blade is 1/2nd of reaction kettle body 1 diameter, and namely end distance reaction kettle body 1 inwall of each blade is 1/4th of reaction kettle body 1 diameter.
Described condensing unit 4 is water circulation condensing unit 4.
Described charging aperture 2 is arranged on reaction kettle body 1 top; Discharging opening 8 is arranged on bottom reaction kettle body 1; Valve 7 is provided with between bottom discharging opening 8 and reaction kettle body 1.
Be provided with chuck 5 outside described reaction kettle body 1, in chuck 5, be provided with attemperating unit 6.
During MBS emulsion polymerisation, the monomer in reactor is volatile, on the one hand affect polymerization efficiency and quality, causes reacting kettle inner pressure to increase on the one hand, the water circulation condensing unit 4 of increase, avoids monomer and volatilizees and cause polymerization efficiency and the low problem of yield.
The present invention is directed to feature during MBS emulsion polymerisation, abandon traditional batch formula agitator, gate stirrer, adopt NEW TYPE OF COMPOSITE whipped form, namely adopt pusher blade 11 and three leaf swept-back blades 10 in agitating device simultaneously, fully utilize the advantage of two kinds of blades, both change the problem that the mixing existed in traditional agitating mode is uneven, polymerization efficiency is low, and make again reaction stability significantly improve.
Claims (7)
1. a MBS emulsion polymerization still, comprise reaction kettle body (1), charging aperture (2) and discharging opening (8), it is characterized in that: reaction kettle body (1) top is provided with motor (3), described motor (3) drives the shaft (9) of agitating device to rotate; Described agitating device gos deep into, in reaction kettle body (1), being equipped with stirrer paddle in shaft (9) end and centre position; Described stirrer paddle is pusher blade (11) and three leaf swept-back blades (10); Described reaction kettle body (1) top arranges condensing unit (4).
2. MBS emulsion polymerization still according to claim 1, is characterized in that: pusher blade (11) and three leaf swept-back blades (10) equidistantly spaced apart.
3. MBS emulsion polymerization still according to claim 2, is characterized in that: pusher blade (11) is two groups; Three leaf swept-back blades (10) are two groups.
4. the MBS emulsion polymerization still according to claim 1,2 or 3, is characterized in that: diameter of propeller blade is 1/2nd of reaction kettle body (1) diameter.
5. MBS emulsion polymerization still according to claim 1, is characterized in that: condensing unit (4) is water circulation condensing unit (4).
6. MBS emulsion polymerization still according to claim 1, is characterized in that: charging aperture (2) is arranged on reaction kettle body (1) top; Discharging opening (8) is arranged on reaction kettle body (1) bottom; Valve (7) is provided with between discharging opening (8) and reaction kettle body (1) bottom.
7. MBS emulsion polymerization still according to claim 1, is characterized in that: reaction kettle body (1) outside is provided with U-shaped chuck (5), is provided with attemperating unit (6) in chuck (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521379.0A CN104226228B (en) | 2014-09-30 | 2014-09-30 | MBS emulsion polymerization still |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521379.0A CN104226228B (en) | 2014-09-30 | 2014-09-30 | MBS emulsion polymerization still |
Publications (2)
| Publication Number | Publication Date |
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| CN104226228A true CN104226228A (en) | 2014-12-24 |
| CN104226228B CN104226228B (en) | 2016-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410521379.0A Active CN104226228B (en) | 2014-09-30 | 2014-09-30 | MBS emulsion polymerization still |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105061684A (en) * | 2015-07-31 | 2015-11-18 | 湖州杨氏塑料助剂有限公司 | Automatic production equipment for MBS production |
| CN109908851A (en) * | 2017-12-12 | 2019-06-21 | 巴斯夫新材料有限公司 | Polymer reactor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2465792Y (en) * | 2000-11-17 | 2001-12-19 | 四川大学 | Swept-back blade paddle mixing device |
| US20110005069A1 (en) * | 2009-07-07 | 2011-01-13 | Boston Scientific Neuromodulation Corporation | Systems and leads with a radially segmented electrode array and methods of manufacture |
| CN202105652U (en) * | 2011-04-30 | 2012-01-11 | 甘肃银光聚银化工有限公司 | Novel multi-phase stirring reactor |
| CN102358760A (en) * | 2011-07-22 | 2012-02-22 | 浙江大学 | Stirred tank reactor |
-
2014
- 2014-09-30 CN CN201410521379.0A patent/CN104226228B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2465792Y (en) * | 2000-11-17 | 2001-12-19 | 四川大学 | Swept-back blade paddle mixing device |
| US20110005069A1 (en) * | 2009-07-07 | 2011-01-13 | Boston Scientific Neuromodulation Corporation | Systems and leads with a radially segmented electrode array and methods of manufacture |
| CN202105652U (en) * | 2011-04-30 | 2012-01-11 | 甘肃银光聚银化工有限公司 | Novel multi-phase stirring reactor |
| CN102358760A (en) * | 2011-07-22 | 2012-02-22 | 浙江大学 | Stirred tank reactor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105061684A (en) * | 2015-07-31 | 2015-11-18 | 湖州杨氏塑料助剂有限公司 | Automatic production equipment for MBS production |
| CN109908851A (en) * | 2017-12-12 | 2019-06-21 | 巴斯夫新材料有限公司 | Polymer reactor |
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| Publication number | Publication date |
|---|---|
| CN104226228B (en) | 2016-06-22 |
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