CN201517081U - Device for continuously producing poly-para-phenylene phthalate-1,3-propylene glycol ester - Google Patents
Device for continuously producing poly-para-phenylene phthalate-1,3-propylene glycol ester Download PDFInfo
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- CN201517081U CN201517081U CN2009201893785U CN200920189378U CN201517081U CN 201517081 U CN201517081 U CN 201517081U CN 2009201893785 U CN2009201893785 U CN 2009201893785U CN 200920189378 U CN200920189378 U CN 200920189378U CN 201517081 U CN201517081 U CN 201517081U
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- esterifier
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Abstract
The utility model discloses a device for continuously producing poly-para-phenylene phthalate-1,3-propylene glycol ester, comprising a first esterifier, a second esterifier in serial connection with the first esterifier, more than one esterification rectification tower, a polymerization reactor and a vacuum system for generating vacuum for performing polymerization, wherein the second esterifier comprises a plurality of communicated reaction chambers and the reaction chambers at least comprise initial reaction chambers, middle reaction chambers and end reaction chambers which are arranged in turn and a fusant delivery pump for circulating the material a the middle reaction kettle to the first esterifier is arranged between the first esterifier and the middle reaction chamber. The estification process is accurately controlled using the reaction chambers of the second esterifier and the production efficiency is increased.
Description
Technical field
The utility model relates to a kind of continuous production poly terephthalic acid-1, the device of ammediol ester.
Background technology
Poly(Trimethylene Terephthalate) (PTT) is a kind of new polyester material that has development prospect of the mid-90 in 20th century commercial exploitation success.It and PET, PBT belong to the novel organic polymer aromatic polyester product of same series of polymers.PTT succeeds in developing, and has further enriched fiber product series.
In the prior art, the production of PTT mainly contains two kinds of batchwise polymerization method and continuous polymerizations.Second esterifier, esterification rectifying tower, the polymerization reactor that present PTT successive polymerization production equipment mainly comprises first esterifier, be in series with first esterifier and be used to produce the vacuum system of carrying out the polymeric vacuum, described first, second esterifier is single chamber vertical response still, it is lower to use this equipment to carry out the production efficiency of PTT, the PTT product molecular weight distribution is wide, and quality product has much room for improvement.
The utility model content
Technical problem to be solved in the utility model provides a kind of continuous production poly terephthalic acid-1, and the device of ammediol ester is with improve production efficiency and product quality.
For solving above technical problem, the utility model is taked following technical scheme:
A kind of continuous production poly terephthalic acid-1, the device of ammediol ester, comprise first esterifier, second esterifier that is in series with first esterifier, an above esterification rectifying tower, polymerization reactor and be used to produce the vacuum system of carrying out the polymeric vacuum, described second esterifier has a plurality of reaction chambers that communicate, a plurality of reaction chambers comprise the initial reaction chamber that sets gradually at least, intermediate reaction chamber and end reaction chamber also are provided with the material that is used for the intermediate reaction still and loop back melt Conveying pump in first esterifier between first esterifier and intermediate reaction chamber.
According to the utility model, described second esterifier is horizontal multistage reactor, and a plurality of reaction chamber along continuous straight runs are arranged side by side.
According to a preferred version of the present utility model: described esterification rectifying tower is one, and it is shared by first esterifier and second esterifier.Described polymerization reactor comprises first polymerization reactor that the end reaction chamber with second esterifier is in series, second polymerization reactor that is in series with first polymerization reactor and the trimerization reactor that is in series with second polymerization reactor.Described trimerization reactor can adopt disc type agitator or cage agitator.
Described vacuum system preferably includes provides 1 of vacuum, ammediol rotary pump with liquid ring and 1, ammediol vapor jet pump.
Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage:
Adopt the utility model device, can utilize a plurality of reaction chambers of second esterifier that the esterification process is controlled accurately, enhance productivity.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the utility model is described in detail.
Fig. 1 is the utility model schematic representation of apparatus;
Wherein: 1, first esterifier; 2, second esterifier; 3, esterification rectifying tower; 4, melt Conveying pump; 5,1, the ammediol rotary pump with liquid ring; 6,1, the ammediol vapor jet pump; 7, making beating still; 8, vacuum system; 20, initial reaction chamber; 21, intermediate reaction chamber; 23, end reaction chamber; 50, first polymerization reactor; 51, second polymerization reactor; 52, trimerization reactor.
Embodiment
As shown in Figure 1, according to present embodiment, the device of continuous production PTT mainly comprises making beating still 7, first esterifier 1, second esterifier 2, esterification rectifying tower 3, first polymerization reactor 50, second polymerization reactor 51, trimerization reactor 52 and supporting vacuum system 8.In addition, this device has also comprised auxiliary facilities such as some other assisted modulation and recovery system, and these contents all belong to the known technology content of this area, can adopt conventional technology, no longer are described in detail at this.In addition, it is also understood that arbitrary reaction of producing the PTT polyester all under stirring condition or be equivalent to carry out under the stirring condition, therefore described auxiliary facility should be contained whipping appts at least or the device that is similar to stirring is provided.
Described second esterifier 2 is horizontal multistage reactor, it is made up of four reaction chambers that are arranged side by side and communicate, wherein, first reaction chamber is initial reaction chamber 20, its bottom with first esterifier 1 link to each other and can by Melt Pump with the mass transport in first esterifier 1 to this initial reaction chamber 20; Second reaction chamber is a transition chamber, and the time that provides esterification to reach certain esterification yield necessity, second reaction chamber communicates on top with first reaction chamber, and promptly the material in first reaction chamber will enter second reaction chamber by the overflow mode; The 3rd reaction chamber is intermediate reaction chamber 21, and it communicates in the bottom with second reaction chamber, and in this reaction chamber, esterification is finished substantially; The 4th reaction chamber is end reaction chamber 23, and it links to each other with polymerization reactor.In addition, as shown in the figure, also be provided with melt Conveying pump 4 between the intermediate reaction chamber 21 of first esterifier 1 and second esterifier 2, this melt Conveying pump 4 can be carried back the partial material in the intermediate reaction chamber 21 in first esterifier 1.
The polyreaction implement body of the utility model device comprises first polymerization reactor 50, second polymerization reactor 51 and the trimerization reactor 52 that connects successively, wherein, in first polymerization reactor 50, can by flash distillation remove that melt contains 1, ammediol, and carry out preliminary polyreaction therein.In second polymerization reactor 51, make melt that polymerization further take place, the polymerization degree increases; Obtain target product PTT in trimerization reactor 52, it after filtration, cutting into slices promptly gets the PTT section, is used for spinning production.
Vacuum system 8 is extremely important for producing PTT.In this device, vacuum system uses 1, and ammediol rotary pump with liquid ring 5 and 1, ammediol vapor jet pump 6 provide reaction system required vacuum.Specifically, be to use 1, ammediol vapor jet pump 5 removes 1 of release from the gas phase of reactor, ammediol and 1, and ammediol oligopolymer and low-boiling point material, and with 1, ammediol steam is operated this vapor jet pump as ejection medium.
Device of the present utility model has following characteristics when producing:
1, esterification divides two sections to finish, and wherein second section esterifier has a plurality of reaction chambers, further accurately controls the esterification process, has guaranteed to obtain higher esterification yield.
2, can utilize the multicell characteristics of second esterifier, esterifying catalyst and polymerizing catalyst are added in the intermediate reaction chamber of second esterifier, since this moment, basic moisture-free in the indoor melt of intermediate reaction, guarantee that catalyzer can hydrolytic inactivation, improve catalytic effect.
3, a certain amount of melt that contains catalyzer can be looped back in first esterifier from the intermediate reaction chamber of the second esterification section, as the source of the first esterification section esterifying catalyst.Other required auxiliary agent of polyreaction then adds from the end reaction chamber of the second esterification section, so, can guarantee to participate in not contain in the round-robin melt polyreaction auxiliary agents such as auxiliary agent such as matting agent, stablizer, tone modifying agent, avoid these auxiliary agents to enter catalytic performance and the esterification that has influence on catalyzer in first section the reactor because of melt circulation, significantly reduce the auxiliary agent especially residence time of matting agent in melt and the formation of aggregated particle.
To sum up, utilize the utility model to control accurately, enhance productivity and quality, reduce production costs the esterification process.
More than the utility model has been done detailed description, but the utility model is not limited to the above embodiments.All equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (6)
1. continuous production poly terephthalic acid-1, the device of ammediol ester, comprise first esterifier (1), second esterifier (2) that is in series with first esterifier (1), an above esterification rectifying tower (3), polymerization reactor and be used to produce the vacuum system (8) of carrying out the polymeric vacuum, it is characterized in that: described second esterifier (2) has a plurality of reaction chambers that communicate, described a plurality of reaction chamber comprises the initial reaction chamber (20) that sets gradually at least, intermediate reaction chamber (21) and end reaction chamber (23) also are provided with the material that is used for described intermediate reaction still (21) and loop back melt Conveying pump (4) in described first esterifier (1) between described first esterifier (1) and described intermediate reaction chamber (21).
2. device according to claim 1 is characterized in that: described second esterifier (2) is horizontal multistage reactor, and a plurality of described reaction chamber along continuous straight runs are arranged side by side.
3. device according to claim 1 is characterized in that: described esterification rectifying tower (3) is one, and it is shared by described first esterifier (1) and described second esterifier (2).
4. device according to claim 1 is characterized in that: described polymerization reactor comprises first polymerization reactor (50) that the end reaction chamber (23) with described second esterifier (2) is in series, second polymerization reactor (51) that is in series with described first polymerization reactor (50) and the trimerization reactor (52) that is in series with described second polymerization reactor (51).
5. device according to claim 4 is characterized in that: described trimerization reactor (52) adopts disc type agitator or cage agitator.
6. according to each described device in the claim 1 to 5, it is characterized in that: described vacuum system (8) comprises provides 1 of vacuum, ammediol rotary pump with liquid ring (5) and 1, ammediol vapor jet pump (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201893785U CN201517081U (en) | 2009-09-29 | 2009-09-29 | Device for continuously producing poly-para-phenylene phthalate-1,3-propylene glycol ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201893785U CN201517081U (en) | 2009-09-29 | 2009-09-29 | Device for continuously producing poly-para-phenylene phthalate-1,3-propylene glycol ester |
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| Publication Number | Publication Date |
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| CN201517081U true CN201517081U (en) | 2010-06-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201893785U Expired - Lifetime CN201517081U (en) | 2009-09-29 | 2009-09-29 | Device for continuously producing poly-para-phenylene phthalate-1,3-propylene glycol ester |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311541A (en) * | 2011-09-08 | 2012-01-11 | 中国石油天然气集团公司 | Second esterification reactor in continuous production device of poly (trimethylene terephthalate) |
| CN109678716A (en) * | 2019-01-24 | 2019-04-26 | 浙江博聚新材料有限公司 | A kind of continuous production technology of oligomeric adipic acid binary alcohol esters |
-
2009
- 2009-09-29 CN CN2009201893785U patent/CN201517081U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311541A (en) * | 2011-09-08 | 2012-01-11 | 中国石油天然气集团公司 | Second esterification reactor in continuous production device of poly (trimethylene terephthalate) |
| CN109678716A (en) * | 2019-01-24 | 2019-04-26 | 浙江博聚新材料有限公司 | A kind of continuous production technology of oligomeric adipic acid binary alcohol esters |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100630 |