CN102350411A - Continuous granulating, crystallizing and drying device for 1,3-polytrimethylene terephthalate (PTT) - Google Patents
Continuous granulating, crystallizing and drying device for 1,3-polytrimethylene terephthalate (PTT) Download PDFInfo
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- CN102350411A CN102350411A CN2011102656882A CN201110265688A CN102350411A CN 102350411 A CN102350411 A CN 102350411A CN 2011102656882 A CN2011102656882 A CN 2011102656882A CN 201110265688 A CN201110265688 A CN 201110265688A CN 102350411 A CN102350411 A CN 102350411A
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Abstract
The invention relates to a continuous graining, crystallizing and drying device for 1,3-polytrimethylene terephthalate (PTT). The continuous graining, crystallizing and drying device comprises a granulator, a crystallizing tower and a slice dryer which are connected with one another sequentially, wherein the granulator is provided with an inlet for inputting a melt continuously produced by PTT; the granulator is an underwater ball-milling granulator; water is filled in the underwater ball-milling granulator; granulating is performed in the underwater ball-milling granulator; produced granules and water enter the crystallizing tower together; in the crystallizing tower, the water temperature is controlled within a range of 75-85 DEG C, the retention time is controlled within a range of 1-5 minutes, and the flow speed of a water and slice mixture is controlled within a range of 1-3 meters per second. By adopting the continuous graining, crystallizing and drying device, the PTT granules have enough retention time to be fully subjected to underwater crystallization in the tower, and the glass transition temperature of the PTT granules is increased, therefore, the problem of sticky blocking of the PTT granules at high temperature can be solved effectively; and package and subsequent production work for the PTT granules are facilitated.
Description
Technical field
The present invention relates to a kind of pelletizing crystallizing and drying device, particularly a kind of poly terephthalic acid 1 that is used for, the continuous pelletizing crystallizing and drying device of ammediol ester.
Background technology
Poly terephthalic acid 1, ammediol ester (PTT) are the successful new polyester materials of 20th century the mid-90 commercial development, are applicable to make senior carpet and braid fiber.But the PTT pelletizing vitrification point that Direct Production goes out is lower, is 45-65 ℃.Become easily thickness, caking of PTT pelletizing when temperature is higher, storage and transportation after being inconvenient to pack.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of poly terephthalic acid 1, the continuous pelletizing crystallizing and drying device of ammediol ester adopts the vitrification point of the PTT that this device produces to be improved, and has eliminated temperature PTT pelletizing thickness caking phenomenon when higher.
The main technical scheme that the present invention adopted is:
A kind of poly terephthalic acid 1; The continuous pelletizing crystallizing and drying device of ammediol ester; Comprise the pelleter, crystallizing tower and the chip dryer that connect successively; Said pelleter is provided with the inlet that is used to import PTT quantity-produced melt; Feed water in the said crystallizing tower, crystallization in the water of section in said crystallizing tower that said pelleter produces.
The tower body of said crystallizing tower preferably mainly is made up of spiral pipe.
Said spiral pipe comprises multilayer pipeline section up and down; The inlet of said spiral pipe is positioned at the bottom of its orlop pipeline section; The outlet of said spiral pipe is positioned at the top of its superiors' pipeline section, and the above entrance and exit lays respectively at relative both sides in the horizontal direction.
Said spiral type pipe can be the helical form of continuous bend, also can form or be other suitable overall spiral structures by some bend pipes at some straight tubes and the two ends that are connected adjacent straight tube respectively.
Said pelleter is preferably underwater pelletizer; In the said underwater pelletizer water is arranged; The pelletizing of said underwater pelletizer is carried out in water; The pelletizing and the water that produce get into said crystallizing tower together; Kept the water in the crystallizing tower thus, and guaranteed to carry out in the water of crystallization in crystallizing tower or mainly carry out in the water in crystallizing tower.
Said underwater pelletizer is preferably ball milling pelleter under water.
In said crystallizing tower, water temperature preferably is controlled between 75-85 ℃, and the time of staying preferably was controlled between 1-5 minute, and the flow velocity of water and section mixture preferably is controlled between the 1-3m/s.
Be provided with storage hopper behind the said chip dryer, and be provided with the induction system that is used for section after the drying is sent into said storage hopper, thus storage hopper is sent in section, so that follow-up operations such as packing are used.
Usually, said induction system can the involving vibrations conveyer, with the transport requirement that is adapted to cut into slices.
Said poly terephthalic acid 1, the continuous pelletizing crystallizing and drying device of ammediol ester can also be provided with the cooling-water temperature sensor that is used to detect the water temperature in the said crystallizing tower, through the control to water temperature, realize required water temperature.
Beneficial effect of the present invention:
Owing to adopt underwater cutpellet, granulation is even, slick and sly, dehydration is convenient, and environmental protection; Because the crystallization processes under water under 75-85 ℃ of employing or other preference temperatures; And adopted the crystallizing tower that mainly constitutes by spiral pipe; Can guarantee fully that the PTT particle has enough time of staying to carry out crystallization in tower; Therefore the PTT particle vitrification point after the crystallization is improved; The particle performance improves, thereby has adapted to the packing of PTT pelletizing and the requirement of subsequent production operation.
Description of drawings
Fig. 1 is a structural representation of the present invention.
The specific embodiment
As shown in Figure 1; The invention provides a kind of poly terephthalic acid 1; The continuous pelletizing crystallizing and drying device of ammediol ester is mainly used in poly terephthalic acid 1, and ammediol ester (PTT) the PTT melt of process units output continuously carries out online pelletizing, crystallization and drying continuously.
This device comprises pelleter 1, crystallizing tower 2 and the chip dryer 4 that connects successively; Said pelleter is a underwater pelletizer; Said crystallizing tower is used for the inner chamber of crystallization and/or the crystallizing tower that passage can feed water for it; But adopt the sealing mode of transporting water to be connected between the outlet of said pelleter and the import of said crystallizing tower; The direct connection or the pipeline that are preferably sealing connect; Said underwater pelletizer is the pelleter that its mass transport passage and pelletizing zone could feed and hold water, preferably can be positioned at the pelleter of underwater operation.Said pelleter is provided with the inlet that is used to import PTT quantity-produced melt, and this inlet constitutes the material main entrance of this device.
Said tower body mainly adopts the spiral pipe structure; Its objective is and guarantee that the PTT pelletizing has enough time of staying to carry out crystallization in crystallizing tower; Thereby the vitrification point of the PTT particle after the assurance crystallization is higher; The PTT particle produces the thickness caking phenomenon when preventing that temperature is higher, makes things convenient for the storage transportation and the subsequent production operation of product.Angle of inclination and spiral number of turns that spiral pipe rationally is set etc. can fully guarantee the crystallization time of PTT pelletizing.Said spiral pipe can take to roll curved or bending technology with the moulding of a pipeline time processing, also can take the multistage straight tube to join in turn from beginning to end and form through suitable bend pipe.
Said spiral pipe comprises multilayer pipeline section up and down; The inlet of said spiral pipe is positioned at the bottom of its orlop pipeline section; Constitute the inlet of said tower body; The outlet of said spiral pipe is positioned at the top of its superiors' pipeline section; Constitute the outlet of said tower body; Said entrance and exit lays respectively at relative in the horizontal direction both sides (promptly as shown in Figure 1; The inlet of said spiral pipe is positioned at the bottom of a side of said tower body; The outlet of said spiral pipe is positioned at the top of the opposite side of said tower body); Can slow down the PTT pelletizing so significantly at ducted flow velocity, guarantee enough crystallization times.
Said pelleter pelletizing, granulation is even, slick and sly, dehydration is convenient, and environmental protection.The PTT pelletizing and the water that produce after the pelletizing of said PTT melt process pelleter together get into crystallizing tower from the bottom inlet of crystallizing tower, in crystallizing tower, flow along said spiral pipe, carry out crystallization under water simultaneously, export out tower from crystallizing tower top then.
Said pelleter preferably adopts ball milling pelleter under water in the application's a embodiment, said PTT melt is converted into spherical PTT pelletizing, and this kind pelletizing is difficult for fracture of wire in follow-up spinning process.
Adopt the tower body of spiral pipe structure, can prolong PTT pelletizing elapsed time in crystallizing tower to a certain extent, for the vitrification point that improves the PTT pelletizing is created the necessary base condition.On this basis; Rationally control related process parameter more helps the raising of the vitrification point of pelletizing; Be full of hot water in the tower body of said crystallizing tower; According to experimental verification; Water temperature is controlled between 75-85 ℃; The time of staying was controlled between 1-5 minute, and the flow velocity of water and section mixture is controlled between the 1-3m/s, and the PTT pelletizing that is obtained is best in quality.Under these conditions; Not only can guarantee effectively carrying out of crystallization; And crystallization and the vitrification point of the PTT particle self that goes out can significantly improve; The PTT melt that the terminal polymerization kettle of the continuous process units of PTT generates directly gets into the said pelleter of ball milling under water; Formed PTT pelletizing directly gets in the crystallizing tower together with water again; In the tower body of crystallizing tower, pass through 75-85 ℃ crystallization under water; The vitrification point of the PTT particle after the crystallization is compared with the PTT particle that adopts existing technology crystallization to go out and is improved; Externally still keep solid forms under the environment temperature condition with higher, the convenient storage and transportation.
Said poly terephthalic acid 1; The continuous pelletizing crystallizing and drying device of ammediol ester also comprises bulk catcher 3; The inlet of said bulk catcher is connected with the outlet of said spiral pipe; Outlet is connected with the inlet of said chip dryer; Said bulk catcher is at first removed a part of water and excessive PTT pelletizing, and remaining a part of PTT pelletizing is carried water and and then got into the further drying of completion in the chip dryer.
Said poly terephthalic acid 1, the continuous pelletizing crystallizing and drying device of ammediol ester can also sieve 5 by involving vibrations, and the material inlet of said vibratory sieve is connected with said chip dryer outlet.Get in the vibratory sieve through the PTT of super-dry pelletizing, said vibratory sieve can be removed substandard PTT pelletizing or choose the PTT pelletizing of specific standard.For example among the application embodiment said PTT pelletizing is cut to spherical PTT pelletizing; Cooperate vibratory sieve can filter out the spherical PTT pelletizing of pelletizing diameter in prescribed limit so, can remove PTT pelletizing nonconforming, that diameter is excessive very easily.
Said poly terephthalic acid 1; The continuous pelletizing crystallizing and drying device of ammediol ester also is provided with section storage hopper 7; The material input port of said section storage hopper directly or through conveying equipment is connected with the below outlet (being screened the outlet of material) of said vibratory sieve, is used to store the PTT pelletizing through after crystallization, drying, the screening.
Said conveying equipment can adopt jigging conveyer 6, can prevent effectively to stop up conveying equipment in the PTT particle course of conveying.
Said poly terephthalic acid 1; The continuous pelletizing crystallizing and drying device of ammediol ester can also be provided with the cooling-water temperature sensor that is used to detect the water temperature in the said crystallizing tower; Said cooling-water temperature sensor can connect attemperating unit in addition; The water temperature signal of cooling-water temperature sensor output inserts attemperating unit; Attemperating unit is in conjunction with the temperature of water in the crystallizing tower of preset temperature range and actual measurement; Water temperature in the crystallizing tower is regulated; Water temperature in the crystallizing tower is remained in the stationary temperature scope; In the raising that guarantees effectively to have guaranteed when PTT pelletizing crystallization is normally carried out PTT particle vitrification point, greatly improved the performance of PTT particle.
Claims (10)
1. poly terephthalic acid 1; The continuous pelletizing crystallizing and drying device of ammediol ester; It is characterized in that comprising the pelleter, crystallizing tower, the chip dryer that connect successively; Said pelleter is provided with the inlet that is used to import PTT quantity-produced melt; Feed water in the said crystallizing tower, crystallization in the water of section in said crystallizing tower that said pelleter produces.
2. poly terephthalic acid 1 as claimed in claim 1, the continuous pelletizing crystallizing and drying device of ammediol ester is characterized in that the tower body of said crystallizing tower mainly is made up of spiral pipe.
3. poly terephthalic acid 1 as claimed in claim 2; The continuous pelletizing crystallizing and drying device of ammediol ester; It is characterized in that said spiral pipe comprises multilayer pipeline section up and down; The inlet of said spiral pipe is positioned at the bottom of its orlop pipeline section; The outlet of said spiral pipe is positioned at the top of its superiors' pipeline section, and the above entrance and exit lays respectively at relative both sides in the horizontal direction.
4. poly terephthalic acid 1 as claimed in claim 3; The continuous pelletizing crystallizing and drying device of ammediol ester; It is characterized in that said spiral type pipe is the helical form of continuous bend, perhaps form by some bend pipes at some straight tubes and the two ends that are connected adjacent straight tube respectively.
5. like claim 1,2,3 or 4 described poly terephthalic acids 1; The continuous pelletizing crystallizing and drying device of ammediol ester; It is characterized in that said pelleter is a underwater pelletizer; In the said underwater pelletizer water is arranged; The pelletizing of said underwater pelletizer is carried out in water, and the pelletizing of generation and water get into said crystallizing tower together.
6. poly terephthalic acid 1 as claimed in claim 5, the continuous pelletizing crystallizing and drying device of ammediol ester is characterized in that said underwater pelletizer is ball milling pelleter under water.
7. poly terephthalic acid 1 as claimed in claim 6; The continuous pelletizing crystallizing and drying device of ammediol ester is characterized in that in said crystallizing tower water temperature is controlled between 75-85 ℃; The time of staying was controlled between 1-5 minute, and the flow velocity of water and section mixture is controlled between the 1-3m/s.
8. poly terephthalic acid 1 as claimed in claim 7, the continuous pelletizing crystallizing and drying device of ammediol ester is characterized in that being provided with storage hopper behind the said chip dryer, and is provided with the induction system that is used for section after the drying is sent into said storage hopper.
9. poly terephthalic acid 1 as claimed in claim 8, the continuous pelletizing crystallizing and drying device of ammediol ester is characterized in that said induction system is provided with jigging conveyer.
10. poly terephthalic acid 1 as claimed in claim 9, the continuous pelletizing crystallizing and drying device of ammediol ester is characterized in that also being provided with the cooling-water temperature sensor that is used to detect the water temperature in the said crystallizing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102656882A CN102350411A (en) | 2011-09-08 | 2011-09-08 | Continuous granulating, crystallizing and drying device for 1,3-polytrimethylene terephthalate (PTT) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102656882A CN102350411A (en) | 2011-09-08 | 2011-09-08 | Continuous granulating, crystallizing and drying device for 1,3-polytrimethylene terephthalate (PTT) |
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| CN102350411A true CN102350411A (en) | 2012-02-15 |
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| CN2011102656882A Pending CN102350411A (en) | 2011-09-08 | 2011-09-08 | Continuous granulating, crystallizing and drying device for 1,3-polytrimethylene terephthalate (PTT) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277186A (en) * | 2020-10-09 | 2021-01-29 | 长兴材料工业（广东）有限公司 | Low-TG (glass transition temperature) crystalline copolyester efficient granulation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282220A (en) * | 1998-03-13 | 2001-01-31 | 沃尼尔·朗伯公司 | Continuous gum base processing system with cooling towers |
| CN1596275A (en) * | 2001-11-30 | 2005-03-16 | 国际壳牌研究有限公司 | Process and apparatus for crystallization of polytrimethylene terephthalate (PTT) |
| CN1705547A (en) * | 2002-10-18 | 2005-12-07 | 纳幕尔杜邦公司 | Processes for producing very low iv polyester resin |
| US20100215561A1 (en) * | 2006-12-29 | 2010-08-26 | Lan C W | Recovery method of silicon slurry |
-
2011
- 2011-09-08 CN CN2011102656882A patent/CN102350411A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1282220A (en) * | 1998-03-13 | 2001-01-31 | 沃尼尔·朗伯公司 | Continuous gum base processing system with cooling towers |
| CN1596275A (en) * | 2001-11-30 | 2005-03-16 | 国际壳牌研究有限公司 | Process and apparatus for crystallization of polytrimethylene terephthalate (PTT) |
| CN1705547A (en) * | 2002-10-18 | 2005-12-07 | 纳幕尔杜邦公司 | Processes for producing very low iv polyester resin |
| US20100215561A1 (en) * | 2006-12-29 | 2010-08-26 | Lan C W | Recovery method of silicon slurry |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277186A (en) * | 2020-10-09 | 2021-01-29 | 长兴材料工业（广东）有限公司 | Low-TG (glass transition temperature) crystalline copolyester efficient granulation system |
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Owner name: CHINA KUNLUN ENGINEERING CO. Free format text: FORMER OWNER: CHINA TEXTILE INDUSTRY DESIGN INST. Effective date: 20120412 |
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Effective date of registration: 20120412 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Applicant after: China National Petroleum Corporation Co-applicant after: China Kunlun Contracting & Engineering Corporation Address before: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Applicant before: China National Petroleum Corporation Co-applicant before: China Textile Industry Design Institute |
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Application publication date: 20120215 |