CN103028361A - Complete mixing flow reaction device and application thereof - Google Patents
Complete mixing flow reaction device and application thereof Download PDFInfo
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- CN103028361A CN103028361A CN2012105645456A CN201210564545A CN103028361A CN 103028361 A CN103028361 A CN 103028361A CN 2012105645456 A CN2012105645456 A CN 2012105645456A CN 201210564545 A CN201210564545 A CN 201210564545A CN 103028361 A CN103028361 A CN 103028361A
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Abstract
The invention discloses a complete mixing flow reaction device and an application thereof. The complete mixing flow reaction device comprises a vertical or horizontal reactor internally provided with an agitator, a circulation line and a circulating pump. The circulation line and the circulating pump form one or more loops from the outlet end to the inlet end of the reactor. One end of the reactor is a discharge end which is provided with a discharge port while the other end of the reactor is a feed end which is provided with a feed inlet. The circulating pump comprises a centrifugal pump, a gear pump, a screw pump, a plunger pump or a diaphragm pump for pushing liquid to circulate. The orifice of the circulation line and the feed inlet at the feed end of the reactor are uniformly distributed on an end socket of the reactor or uniformly distributed on a bucket wall of the reactor close to the end socket or centralized as one or more materials and enter into the reactor. The complete mixing flow reaction device is applied to high viscosity reaction. The high viscosity reaction is ethylene propylene rubber polymerization reaction. According to the circulating pump and the circulation line provided by the invention, mixing of high viscosity materials in an agitating kettle is close to complete mixing flow, so that materials are effectively mixed.
Description
Technical field
The present invention relates to a kind of complete mixing flow reaction unit, be mainly used in EP rubbers polymerization technology and other high viscosity reaction process.
Background technology
Polymerization reaction kettle is the Core equipment that EP rubbers is produced.Ethene, propylene and other double olefin monomer copolymerization generate ternary or binary ethylene-propylene copolymer in polymeric kettle.Material is in the complete mixing flow state in the EP rubbers solution polymerization technological requirement polymeric kettle, and technological means is by designing high efficiency paddle or reducing polymer concentration and realize at present.Because polymeric kettle internal reaction thing viscosity is high, the raising of paddle efficient is limited, and mixed effect does not often reach designing requirement, and when polymer concentration is high or molecular weight of product is when high, system viscosity increases suddenly, just more difficult assurance of mixing effect.In order to realize mixing near the complete mixing flow state, will reduce reactant viscosity by reducing polymer concentration, can reduce polymeric kettle production capacity but do like this.
Judge whether reactor internal reaction thing is in the complete mixing flow state, way is flow field analysis usually.In the complete mixing flow reactor, reactant flowed rapidly in the radial and axial while.The experience criterion is liquid reactants radial circulation 5 times, can think to mix.In successive reaction, reactant will realize that in mean residence time 5 radial circulation could be near the complete mixing flow state.
Usually can not simulate all situations of actual process during reactor design, when process conditions change, be difficult to guarantee that reactant is in the complete mixing flow state.
Summary of the invention
In order to overcome the deficiencies in the prior art, the purpose of this invention is to provide a kind of complete mixing flow reaction unit and application thereof.
The complete mixing flow reaction unit comprises vertical or horizontal reactor, pipeloop and the circulating pump of built-in agitator, and circulating pump and pipeloop have consisted of the loop of reactor discharge end to feed end, and the quantity in loop is one or more; One end of reactor is that discharge end is provided with discharging opening, and the other end is that feed end is provided with charging aperture.
Described circulating pump comprises centrifugal pump, gear pump, screw pump, plunger displacement pump or membrane pump, is used for promoting liquid-circulating.
Every circulation pipe flow is more than or equal to the discharging opening flow during described complete mixing flow reaction unit operation.
Described loop quantity is 3-5.
Described pipeloop diameter is with the discharging opening equal diameters.
The pipeloop mouth of pipe and the discharging opening of described reactor discharge end are distributed on the reactor end socket, or be distributed in reactor in abutting connection with end socket the bucket wall on.
The pipeloop mouth of pipe and the charging aperture of described reactor feed end are distributed on the reactor end socket, or be distributed in reactor on the bucket wall of end socket, or be concentrated into one or several strands of materials enter reactor.
Described complete mixing flow reaction unit is applied to the high viscosity reaction.
Described high viscosity reaction is the EP rubbers polymerisation.
Beneficial effect of the present invention:
The present invention can guarantee no matter how process conditions change, and reactant all is in the state near complete mixing flow, can the stabilised quality product, guarantee output.
Description of drawings
Fig. 1 is complete mixing flow reaction unit generalized section.
Shown in the accompanying drawing, charging aperture 1, discharging opening 2, agitator 3, pipeloop 4, circulating pump 5.
The specific embodiment
Below the present invention is further illustrated by the drawings and specific embodiments.
The complete mixing flow reaction unit comprises vertical or horizontal reactor, pipeloop and the circulating pump of built-in agitator, and circulating pump and pipeloop have consisted of the reactor discharge end to the feed end loop, and the quantity in loop is one or more; One end of reactor is that discharge end is provided with discharging opening, and the other end is that feed end is provided with charging aperture.
Described circulating pump comprises centrifugal pump, gear pump, screw pump, plunger displacement pump or membrane pump, is used for promoting liquid-circulating.
Every circulation pipe flow is more than or equal to the discharging opening flow during described complete mixing flow reaction unit operation.
Described loop quantity is 3-5.
Described pipeloop diameter is with the discharging opening equal diameters.
The pipeloop mouth of pipe and the discharging opening of described reactor discharge end are distributed on the reactor end socket, or be distributed in reactor in abutting connection with end socket the bucket wall on.
The pipeloop mouth of pipe and the charging aperture of described reactor feed end are distributed on the reactor end socket, or be distributed in reactor on the bucket wall of end socket, or be concentrated into one or several strands of materials enter reactor.
Described complete mixing flow reaction unit is applied to the high viscosity reaction.
Described high viscosity reaction is the EP rubbers polymerisation.
As shown in Figure 1, charging aperture 1, discharging opening 2, agitator 3, pipeloop 4, circulating pump 5.Return feed end by pipeloop 4 realization response things from discharge end.Return flow can pass through number of lines or circulating pump 5 power adjusting.
5 pipeloops of general installation, the diameter of every pipeline is identical with outlet line, be equipped with the circulating pump of corresponding power, make the interior mass flow of every pipeline suitable with discharging opening, total return flow is about the 5 times states that just can reach near complete mixing flow of reactor feed amount.
For the reactor of small volume, can select the pipeloop of lesser amt.For the larger reactor of volume, can select a fairly large number of pipeloop 4.
The pipeline port can be installed on the reactor end socket, also can be installed in the cylindrical shell place near end socket, namely on the bucket wall of end socket.
When many circular routes were arranged, circular route was evenly equipped with and is beneficial to the raising mixing efficiency.
Circulating pump 5 forms are determined by the character of reactant.Centrifugal pump, gear pump, screw pump, plunger displacement pump and membrane pump can be used as circulating pump.For the high viscosity reaction mass, should first-selected gear pump and screw pump.
Design will take into account during agitator 3 axially and mixed effect radially usually.The present invention has guaranteed radially mixed effect of reactant by pipeloop, has reduced stirrer shaft to the requirement that mixes.As long as agitator can guarantee radially mixed effect, be easy to realize that complete mixing flow mixes.Use when of the present invention, can select radially mixing agitator.
Apparatus of the present invention can be used for having course of reaction and the adiabatic reaction process of heat exchange.Circular route equally is incubated processing with reactor.
In solwution method EP rubbers adiabatic polymerisation reaction process, reactant viscosity is generally higher, and admixture is larger on the reaction result impact.Use apparatus of the present invention and can guarantee no matter how process conditions change, reactant all is in the state near complete mixing flow, can the stabilised quality product, guarantee output.
The present invention can also be used for other high viscosity reaction system.
Claims (9)
1. complete mixing flow reaction unit, it is characterized in that, it comprises vertical or horizontal reactor, pipeloop and the circulating pump of built-in agitator, and circulating pump and pipeloop have consisted of the loop of reactor discharge end to feed end, and the quantity in loop is one or more; One end of reactor is that discharge end is provided with discharging opening, and the other end is that feed end is provided with charging aperture.
2. complete mixing flow reaction unit as claimed in claim 1 is characterized in that, described circulating pump comprises centrifugal pump, gear pump, screw pump, plunger displacement pump or membrane pump, is used for promoting liquid-circulating.
3. complete mixing flow reaction unit as claimed in claim 1 is characterized in that, every circulation pipe flow is more than or equal to the discharging opening flow during described complete mixing flow reaction unit operation.
4. complete mixing flow reaction unit as claimed in claim 1 is characterized in that, described loop quantity is 3-5.
5. complete mixing flow reaction unit as claimed in claim 1 is characterized in that, described pipeloop diameter is with the discharging opening equal diameters.
6. complete mixing flow reaction unit as claimed in claim 1 is characterized in that, the pipeloop mouth of pipe and the discharging opening of described reactor discharge end are distributed on the reactor end socket, or be distributed in reactor in abutting connection with end socket the bucket wall on.
7. complete mixing flow reaction unit as claimed in claim 1, it is characterized in that, the pipeloop mouth of pipe and the charging aperture of described reactor feed end are distributed on the reactor end socket, or be distributed in reactor on the bucket wall of end socket, or be concentrated into one or several strands of materials enter reactor.
8. a complete mixing flow reaction unit as claimed in claim 1 is applied to the high viscosity reaction.
9. application as claimed in claim 8 is characterized in that, described high viscosity reaction is the EP rubbers polymerisation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105645456A CN103028361A (en) | 2012-12-24 | 2012-12-24 | Complete mixing flow reaction device and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105645456A CN103028361A (en) | 2012-12-24 | 2012-12-24 | Complete mixing flow reaction device and application thereof |
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| CN103028361A true CN103028361A (en) | 2013-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113750943A (en) * | 2021-09-10 | 2021-12-07 | 河北化工医药职业技术学院 | Special system for producing chiral drugs |
| CN114700023A (en) * | 2022-05-11 | 2022-07-05 | 华南理工大学 | High-efficiency reaction device and method for high-solid-content suspension system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201231148Y (en) * | 2008-07-28 | 2009-05-06 | 江苏卡特石油新能源有限公司 | Reflux unit of thinly liquid reaction kettle |
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2012
- 2012-12-24 CN CN2012105645456A patent/CN103028361A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201231148Y (en) * | 2008-07-28 | 2009-05-06 | 江苏卡特石油新能源有限公司 | Reflux unit of thinly liquid reaction kettle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113750943A (en) * | 2021-09-10 | 2021-12-07 | 河北化工医药职业技术学院 | Special system for producing chiral drugs |
| CN114700023A (en) * | 2022-05-11 | 2022-07-05 | 华南理工大学 | High-efficiency reaction device and method for high-solid-content suspension system |
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Application publication date: 20130410 |