CN2707758Y - Hybrid power external circulation type polyester esterifying reactor - Google Patents
Hybrid power external circulation type polyester esterifying reactor Download PDFInfo
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- CN2707758Y CN2707758Y CN 200420064713 CN200420064713U CN2707758Y CN 2707758 Y CN2707758 Y CN 2707758Y CN 200420064713 CN200420064713 CN 200420064713 CN 200420064713 U CN200420064713 U CN 200420064713U CN 2707758 Y CN2707758 Y CN 2707758Y
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Abstract
The utility model discloses a hybrid power external circulation type polyester esterifying reactor, including a heterogeneous reaction device, an evaporation reaction device and a power driving device. The heterogeneous reactor device includes a reactor with an upright type parallel pipe heat exchanging device provided inside, the outlet of the reactor is communicated with the evaporation reaction device, and the inlet of the reactor is communicated with the feed opening of reaction mass and the bottom of the evaporation reaction device. The evaporation reaction device includes an airtight shell, the upper part of the inner part of the shell is an evaporation zone, and the lower part is a reaction zone, the top of the shell is provided with a gas phase outlet, and the bottom extends a flow guiding segment. At least one piece of flow guiding plate is provided in the flow guiding segment. The evaporation reaction device and the reactor compose a sealed loop. The power driving device includes a driving mechanism provided on the outer part of the evaporation reaction device and an axial flow type stirrer pivoted on the inner part of the flow guiding segment. The axial flow type stirrer is connected with the driving mechanism via a shaft.
Description
Technical field
The utility model relates to a kind of chemical fibre industry reactor, more particularly, relates to a kind of hybrid power outer circulation type polyester esterification reactor that uses in production polyethylene terephthalate (PET is commonly called as polyester) technological process.
Background technology
The production process of polyester is earlier raw material ethylene glycol (EG) and terephthalic acid (PTA) to be mixed into slurry by certain mol proportion, under certain temperature and pressure slurry being made esterification again handles, generate ethylene glycol terephthalate (BHET), and further the phthalic acid glycol ester that generates is done polycondensation and handle, generate polyethylene terephthalate.In this production process, wherein the technology of esterification processing is to finish in the perfectly mixed reactor of a belt stirrer at present, but the full esterifier complex structure of this belt stirrer especially manufacturing has occurred, has transported very problem such as difficulty after device maximizes.
At this problem, also there is at present the technology that esterification is handled in relying on heat power circulation full mixing reactor, to finish, and this reactor needs a large amount of ethylene glycol to participate in circulation, allow more ethylene glycol gasify, just can obtain enough density differences, by test as can be known, in the common heat power circulation process, esterification only in mol ratio (EG/PTA) greater than 2.0, temperature of reaction 〉=290 ℃ can be carried out smoothly, so a large amount of ethylene glycol circulates in system, gasification, cooling consumes energy in vain, makes that simultaneously the volume of reactor assembly is excessive, there is the transportation difficulty, manufactures experimently problems such as more massive equipment is restricted.
Creator in the utility model relies on it to be engaged in the experience and the practice of relevant industries for many years for this reason, and through concentrating on studies and developing, finally create a kind of combine heat power circulation and external force promotion circulation, and can reduce ethylene glycol material cycle amount, make device can both save the energy, the hybrid power outer circulation type polyester esterification reactor that reduces equipment volume again, reduces cost and be issued to polyester device maximization purpose.
Summary of the invention
Main purpose of the present utility model is to provide a kind of hybrid power outer circulation type polyester esterification reactor, utilizes this esterifier can effectively improve present respectively independent perfectly mixed reactor that uses belt stirrer and problem such as rely on the existing complex structure of heat power circulation full mixing reactor, cost height or the ethylene glycol amount is excessive, circulating consumption is high and esterification yield is low.
Hybrid power outer circulation type polyester esterification reactor in the utility model includes inhomogeneous reaction device, evaporation reaction device and Power Drive Unit, it is characterized in that:
Described inhomogeneous reaction device includes the reactor of setting up formula tubulation heat-exchanger rig in one, and the outlet of this reactor is connected with described evaporation reaction device, and inlet is connected with the opening for feed of reaction mass and the bottom of evaporation reaction device;
Described evaporation reaction device includes an airtight housing, on the top of enclosure interior is evaporating area, and the bottom is a reaction zone, be provided with gaseous phase outlet at its top, the bottom is extended with a diversion section, be provided with at least one flow deflector in this diversion section, this evaporation reaction device and described reactor constitute the loop of a sealing;
Described Power Drive Unit includes the driving mechanism that is located at described evaporation reaction device outside, the axial flow type stirrer that is hubbed on described diversion section inside, and this axial flow type stirrer connects with described driving mechanism by axle.
The outlet of described inhomogeneous reaction device is connected with the evaporating area on described evaporation reaction device top by water conservancy diversion top cover, inhomogeneous reaction thing outlet pipe.
The bottom inlet of described inhomogeneous reaction device is one to be used for the guiding cone of homogenizing distribution material.
The bottom of described evaporation reaction device is communicated with the bottom of described reactor by a U type pipe, and is provided with material inlet at an end of the close reactor of this U-shaped pipe, and is provided with a material outlet at the end away from this reactor.
Described inhomogeneous reaction thing outlet pipe, evaporation reaction device, reactor and U-shaped pipe all are arranged with the heating agent chuck with heat insulation function outward.
Described driving mechanism is located at the top of described evaporation reaction device.
Be five flow aprons that positive pentagon distributes by being welded with in the described diversion section, and left the space that is used to put described axial flow type stirrer middle the blocking of every flow deflector.
Hybrid power outer circulation type polyester esterification reactor in the utility model combines the heat power circulation and external force promotes circulation, effectively reduce the internal circulating load of ethylene glycol, make whole reactor have the saving energy, reduce equipment volume, reduce cost, and can reach polyester device maximization purpose and function.
Description of drawings
Fig. 1 is the structural representation of hybrid power outer circulation type polyester esterification reactor in the utility model;
Fig. 2 is the structural representation of axial flow type stirrer in the utility model.
Embodiment
The specific embodiment of the utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the hybrid power outer circulation type polyester esterification reactor in the utility model includes inhomogeneous reaction device 1, evaporation reaction device 2 and Power Drive Unit 3, wherein:
Evaporation reaction device 2 includes an airtight housing 20, is provided with a liquid phase heating agent chuck 26 with heat insulation function outside housing 20, is prior art because liquid phase thermal jacket 26 adopts, therefore no longer describes in detail.These housing 20 inside can be divided into the evaporating area 21 on top and the reaction zone 22 of bottom in reaction process, be provided with gaseous phase outlet 23 at its top, the bottom is extended with a diversion section 24 in integrally formed mode, be provided with five by welding or other fixedly connected mode on the inwall of this diversion section 24 and be the baffle plate 25 that positive pentagon distributes, and each baffle plate 25 is all by the space of blocking and being formed for putting axial flow type stirrer 30, utilize this baffle plate 25 can destroy liquid formed whirlpool under axial flow type stirrer 30 effects, thereby guarantee that liquid is toward current downflow.
Inhomogeneous reaction device 1 includes the reactor 10 that an inside is provided with vertical tubulation heat-exchanger rig 16, the outlet of this reactor 10 is connected with the evaporating area 21 on evaporation reaction device 2 tops by water conservancy diversion top cover 11, inhomogeneous reaction thing outlet pipe 12, inlet 17 is a guiding cone of standing upside down, and has the function of homogeneous mixture of material.This inlet 17 is connected by the diversion section 24 of a U-shaped pipe 14 with evaporation reaction device 2 bottoms, thereby inhomogeneous reaction device 1 constitutes a loop of sealing with evaporation reaction device 2, end at U-shaped pipe 14 close reactor 10 inlets 17 is provided with a material inlet 13, is provided with a material outlet 15 at the end near evaporation reaction device 2.The entry and exit 18,19 of vertical tubulation heat-exchanger rig 16 are connected with extraneous liquid phase heating agent heating tube (not shown), utilize the liquid phase heating agent can the material that enter reactor 10 inside be heated.In order to prevent the loss of heat, also be arranged with liquid phase heating agent chuck with the outside of inhomogeneous reaction thing outlet pipe 12 with heat insulation function at reactor 10, U-shaped pipe 14, top cover 11.
Power Drive Unit 3 includes the driving mechanism 31 that is located at evaporation reaction device 2 tops, parallel two axial flow type stirrers 30 that evaporation reaction device diversion section 24 inside drive by same axle 32 (quantity of this axial flow type stirrer can be determined according to the output of whole reactor and thermal cycling power and mechanokinetic ratio) that are hubbed on, this axial flow type stirrer 30 connects with driving mechanism 31 by axle 32, and in the junction of axle 32 and housing 20 for being tightly connected, because axle 32 is a prior art with the technology of being tightly connected of housing 20, no longer describes in detail.
As shown in Figure 2, axial flow type stirrer 30 adopts disclosed product in No. the 92242172.2nd, the Chinese patents, it includes the impeller of being made up of five blades 33 (wherein the quantity of blade also can set up on their own according to different demands), pitch to blade tip different radii place equates this impeller from the center, and blade from the end to root along leaf the wide cambered surface that is, the medullary ray of its any cross section is a camber line, the action of this camber line is 0.04-0.08 with the chord length ratio, the leading edge cavetto of whole blade, radius is to be half of sheet thickness, and vane trailing edge is also accomplished circular arc.The width of blade of this axial flow type stirrer 30 is slightly less than the width between baffle plate, and promptly this axial flow type stirrer 30 can be finished installation from the gap between each baffle plate 25, have easy to assembly, axial velocity evenly, mix the usefulness advantages of higher.
The working process of hybrid power outer circulation type polyester esterification reactor is as follows in the utility model:
At first raw material ethylene glycol (EG) and terephthalic acid (PTA) are mixed with fresh slurry by certain molar ratio, this slurry is imported from material inlet 13, in the guiding cone 17 of reactor 10 bottoms, mix with certain proportion with recycle stock, and enter reactor 10 inside, this slurry is heated rapidly by vertical tubulation heat-exchanger rig 16 in this reactor 10, temperature raises, react, part ethylene glycol and water generating gasification in esterification, therefore form the lower gas-liquid mixed phase of density on reactor 10 tops, thereby the liquid phase material by low density gas-liquid mixture and higher density forms density difference, the thermal siphon power that this partial density difference changes into is called thermal cycling power, under the promotion of this thermal cycling power, material is via the water conservancy diversion top cover 11 on reactor 10 tops, inhomogeneous reaction thing outlet pipe 12 enters the evaporating area 21 of evaporation reaction device 2, concurrent angry liquid separates, and slurry and the ethylene glycol generation esterification that does not gasify generate carboxylate and water.Water and unnecessary ethylene glycol is partial gasification at high temperature, and the gas phase of ethylene glycol and water is discharged by the gaseous phase outlet 23 of reactor head, and liquid phase enters the evaporating area 22 of evaporation reaction device 2 bottoms, in the time that stops, proceeds reaction and gas-liquid separation.The material of bottom is inhaled in the diversion section 24 by the baffle plate 25 of axial flow type stirrer 30, and further promote material and enter downwards in the U type pipe 14, the material that this moment, part was finished esterification is from material outlet 15 next reactor of importing, and most of material enters circulation next time again with after fresh slurry is mixed.Second section is the mechanical cycles power that is provided by special efficient lower-discharging type agitator, combines thermal cycling power and mechanical power preferably, has problems such as reduction equipment volume, reduction ethylene glycol consumption.
In sum, the hybrid power outer circulation type polyester esterification reactor in the utility model has following advantage:
1. combine heat power circulation and external force and promote circulation, thereby can reduce the internal circulating load of ethylene glycol material, make whole reactor both save the energy, reduce equipment volume again, reducing cost is issued to the purpose of polyester device maximization.
2. owing to adopt the axial flow agitator, and the blade of this axial flow type stirrer is new and effective forced-ventilated blade, have easy for installation, the probability that minimizing internal high temperature, high pressure ethylene glycol material leak outside, and because of anti-back mixing design at the diversion section Internal baffle, guarantee that fully fluid is uniflux in evaporation reaction bottom of device and the U-shaped pipe, no back mixing phenomenon has improved cycle efficiency.
3. owing to adopted water conservancy diversion top cover and guiding cone, make material comparatively smooth and easy in working cycle, and make fresh slurry and circulation slurry thorough mixing.
4. owing to adopted the vertical tubulation heat-exchanger rig of thermal siphon formula of liquid phase heating agent heating, effectively saved heat energy.
Claims (7)
1. a hybrid power outer circulation type polyester esterification reactor includes inhomogeneous reaction device, evaporation reaction device and Power Drive Unit, it is characterized in that:
Described inhomogeneous reaction device includes the reactor of setting up formula tubulation heat-exchanger rig in one, and the outlet of this reactor is connected with described evaporation reaction device, and inlet is connected with the opening for feed of reaction mass and the bottom of evaporation reaction device;
Described evaporation reaction device includes an airtight housing, on the top of enclosure interior is evaporating area, and the bottom is a reaction zone, be provided with gaseous phase outlet at its top, the bottom is extended with a diversion section, be provided with at least one flow deflector in this diversion section, this evaporation reaction device and described reactor constitute the loop of a sealing;
Described Power Drive Unit includes the driving mechanism that is located at described evaporation reaction device outside, the axial flow type stirrer that is hubbed on described diversion section inside, and this axial flow type stirrer connects with described driving mechanism by axle.
2. according to the hybrid power outer circulation type polyester esterification reactor described in the claim 1, it is characterized in that: the outlet of described inhomogeneous reaction device is connected with the evaporating area on described evaporation reaction device top by water conservancy diversion top cover, inhomogeneous reaction thing outlet pipe.
3. according to the hybrid power outer circulation type polyester esterification reactor described in claim 1 or 2, it is characterized in that: the bottom inlet of described inhomogeneous reaction device is one to be used for the guiding cone of homogenizing distribution material.
4. according to the hybrid power outer circulation type polyester esterification reactor described in claim 1 or 2, it is characterized in that: the bottom of described evaporation reaction device is communicated with the bottom of described reactor by a U type pipe, and be provided with material inlet near an end of reactor at this U-shaped pipe, and be provided with a material outlet at a end away from this reactor.
5. according to the hybrid power outer circulation type polyester esterification reactor described in the claim 4, it is characterized in that: described inhomogeneous reaction thing outlet pipe, evaporation reaction device, reactor and U-shaped pipe all are arranged with the heating agent chuck with heat insulation function outward.
6. according to the hybrid power outer circulation type polyester esterification reactor described in claim 1 or 2, it is characterized in that: described driving mechanism is located at the top of described evaporation reaction device.
7. according to the hybrid power outer circulation type polyester esterification reactor described in the claim 1, it is characterized in that: be five flow aprons that positive pentagon distributes by being welded with in the described diversion section, and left the space that is used to put described axial flow type stirrer middle the blocking of every flow deflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420064713 CN2707758Y (en) | 2004-06-02 | 2004-06-02 | Hybrid power external circulation type polyester esterifying reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420064713 CN2707758Y (en) | 2004-06-02 | 2004-06-02 | Hybrid power external circulation type polyester esterifying reactor |
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| Publication Number | Publication Date |
|---|---|
| CN2707758Y true CN2707758Y (en) | 2005-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200420064713 Expired - Lifetime CN2707758Y (en) | 2004-06-02 | 2004-06-02 | Hybrid power external circulation type polyester esterifying reactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007098638A1 (en) * | 2006-02-28 | 2007-09-07 | China Textile Industrial Engineering Institute | A power external circulation estering reactor |
| CN101439277B (en) * | 2008-12-11 | 2012-08-29 | 中昊晨光化工研究院 | Method and device for gas-solid reaction |
| CN106831668A (en) * | 2017-02-27 | 2017-06-13 | 四川金象赛瑞化工股份有限公司 | A kind of method that hemicellulose continuous dehydration prepares furfural |
-
2004
- 2004-06-02 CN CN 200420064713 patent/CN2707758Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007098638A1 (en) * | 2006-02-28 | 2007-09-07 | China Textile Industrial Engineering Institute | A power external circulation estering reactor |
| CN101439277B (en) * | 2008-12-11 | 2012-08-29 | 中昊晨光化工研究院 | Method and device for gas-solid reaction |
| CN106831668A (en) * | 2017-02-27 | 2017-06-13 | 四川金象赛瑞化工股份有限公司 | A kind of method that hemicellulose continuous dehydration prepares furfural |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140602 Granted publication date: 20050706 |