CN103950124A - System and method for drying high-shrinkage polyester chips - Google Patents
System and method for drying high-shrinkage polyester chips Download PDFInfo
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- CN103950124A CN103950124A CN201410175455.7A CN201410175455A CN103950124A CN 103950124 A CN103950124 A CN 103950124A CN 201410175455 A CN201410175455 A CN 201410175455A CN 103950124 A CN103950124 A CN 103950124A
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Abstract
The invention discloses a system and a method for drying high-shrinkage polyester chips. The drying system comprises a pulse type crystallizing bed, a crystallizing heater, a crystallizing draught fan, a cyclone dust collector, a drying tower, a molecular sieve dryer, a pressure reducing valve, a drying heater, an air inlet pipe, an air outlet pipe, an air compression pipe net, a steam-jet pump and a buffer tank, wherein the air inlet pipe is connected with an air outlet pipe through the molecular sieve dryer, the pressure reducing valve and the drying heater, the air outlet pipe is connected to an air inlet in the lower part of the drying tower, and the pulse type crystallizing bed is located above the drying tower and is communicated with the drying tower. The system and the method have the beneficial effects that dry compressed air blown from the air outlet pipe enters the buffer tank through an air return pipe after drying the chips in the drying tower, recycled air in the buffer tank is pumped into the molecular sieve dryer by virtue of the steam-jet pump and is dried, and the dried airflow returns to the air outlet pipe and enters the drying tower, so that air is recycled.
Description
Technical field
The present invention relates to a kind of Chip Drying System and drying means, especially a kind of drying system of high retraction polyester chip and drying means.
Background technology
In spinning process, for fear of the section that contains moisture, in high-temperature fusion process, cause polymer macromolecule fracture, cause spinning end breakage rate high, the problems such as rear processing tensile property is poor, and product intensity is low therefore must reduce the moisture content of cutting into slices before spinning, also can improve in addition degree of crystallinity and the softening point of section, prevent section while entering screw extruder because its softening point is low, the screw rod that at high temperature bonds, causes " loops " resistance material phenomenon.Therefore,, in most of situation, before spinning, section must be through super-dry.
So-called high retraction polyester chip, mainly by adopting the method for chemical modification, in the polymer molecule that forms terylene, add copolymer component, to reduce large molecule inward turning activation energy, improve the high elastic deformation amount while stretching, reduce crystalline rate and degree of crystallinity, thus the shrinkage factor of fiber after raising spinning.Therefore high contraction section is exactly the direct material of high-shrinkage fibre, and so-called high-shrinkage fibre, the interior fiber that is generally 35%-45% by boiling water shrinkage of present stage industry becomes high-shrinkage fibre.
In the process at synthetic high-contraction polyester, added a high proportion of modification by copolymerization component, the regularity of strand is damaged, polymer crystallization degree is low, poor heat stability, fusing point skewness, thereby cause chip drying difficulty, drying equipment has been proposed to stricter requirement.For this reason, a kind of continuous drier of high retraction polyester chip is disclosed in Chinese patent ZL200810024817, comprise core apparatus and the attached pipe-line systems such as chip bunker, inlet valve, pre-crystallizer, drying tower, cyclone separator, its shortcoming is: the drying effect of the wind recycling after long-time use reduces, and does not have the effect of anticipation.
Owing to there being such problem, so be necessary prior art to improve.
Summary of the invention
A kind of drying system and the drying means of saving the energy, high retraction polyester chip that drying effect is good that the object of the invention is to design in order to solve the deficiency of above-mentioned technology.
The drying system of the high retraction polyester chip that the present invention is designed, comprises that pulsed is crystallizing bed, crystallization heater, crystallization blower fan, cyclone dust collectors, drying tower, mole sieve drier, pressure-reducing valve, drying heater and blast pipe and discharge pipe; Described pulsed is crystallizing bed to be connected with crystallisation cycle pipeline, and described crystallization heater, crystallization blower fan and cyclone dust collectors are all arranged on crystallisation cycle pipeline, and described circulating line also has a blast pipe, and described blast pipe is provided with air bleeding valve; Described blast pipe connects discharge pipe by mole sieve drier, pressure-reducing valve, drying heater, and described discharge pipe connects the air inlet of drying tower bottom, and described pulsed is crystallizing bed to be positioned at drying tower top and to be attached thereto logical; Also comprise and press blank pipe net, steam jet pump and surge tank, the gas outlet on described blast pipe and drying tower top is all connected with surge tank by muffler, pressure blank pipe in described pressure blank pipe net connects the import of steam jet pump, the outlet of described steam jet pump connects described blast pipe, and the negative pressure mouth of described steam jet pump connects described surge tank; Described discharge pipe connects described crystallisation cycle pipeline by a secondary air channel; Described secondary air channel is provided with check valve and mends air-valve.
As preferably:
Described air bleeding valve and benefit air-valve are controlled by same the time relay.
The drying means of the high retraction polyester chip that the present invention is designed, the method adopts the drying system of high retraction polyester chip recited above, it is characterized in that: in use procedure, steam jet pump import department enters after compressed air, negative pressure mouth produces negative pressure the recyclable steam in surge tank is sucked and deliver in mole sieve drier, recyclable steam enters drier after mixing with compressed air dry, the air-flow dry through mole sieve drier is heated again once through drying heater, guaranteed the drying property of air-flow, the air-flow being dried is got back to discharge pipe and is entered in drying tower, thereby reach, recycle.
The drying system of the high retraction polyester chip that the present invention is designed and drying means, its beneficial effect is: section is carried out crystallization pulsed is crystallizing bed, then entering drying tower is dried, drying tower connects discharge pipe and muffler, discharge pipe blows out after dry compressed air is dried the section in drying tower and enters surge tank from muffler, what enter surge tank is that humidity is compared greatly but the higher recyclable steam of temperature, in use procedure, steam jet pump import department enters after compressed air, negative pressure mouth produces negative pressure the recyclable steam in surge tank is sucked and deliver in mole sieve drier, recyclable steam enters drier after mixing with compressed air dry, the air-flow dry through mole sieve drier is heated again once through drying heater, guaranteed the drying property of air-flow, the air-flow being dried is got back to discharge pipe and is entered in drying tower, thereby reach, recycle,
Effective recovery waste heat.Discharge pipe is connected with pulsed is crystallizing bed by mending air-valve and secondary air channel, to supplement the air-flow of institute's loss in crystallization process, guarantees the normal operation of crystal system.Native system has reduced the waste of resource greatly, has reduced energy resource consumption simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2.
In figure: pulsed is crystallizing bed 1, crystallization heater 2, crystallization blower fan 3, cyclone dust collectors 4, drying tower 5, mole sieve drier 6, pressure-reducing valve 7, drying heater 8, blast pipe 9, discharge pipe 10, crystallisation cycle pipeline 11, blast pipe 12, air bleeding valve 13, press blank pipe net 14, steam jet pump 15, surge tank 16, muffler 17, secondary air channel 18, check valve 19, mend air-valve 20, the time relay 21.
The specific embodiment
Below by embodiment, the invention will be further described by reference to the accompanying drawings.
Embodiment 1:
As shown in Figure 1, the drying system of the described high retraction polyester chip of the present embodiment, comprises that pulsed is crystallizing bed 1, crystallization heater 2, crystallization blower fan 3, cyclone dust collectors 4, drying tower 5, mole sieve drier 6, pressure-reducing valve 7, drying heater 8 and blast pipe 9 and discharge pipe 10; Described pulsed crystallizing bed 1 is connected with crystallisation cycle pipeline 11, described crystallization heater 2, crystallization blower fan 3 and cyclone dust collectors 4 are all arranged on crystallisation cycle pipeline 11, described circulating line also has a blast pipe 12, and described blast pipe 12 is provided with air bleeding valve 13; Described blast pipe 9 connects discharge pipe 10 by mole sieve drier 6, pressure-reducing valve 7, drying heater 8, and described discharge pipe 10 connects the air inlet of drying tower 5 bottoms, and described pulsed crystallizing bed 1 is positioned at drying tower 5 tops and is attached thereto logical; Also comprise and press blank pipe net 14, steam jet pump 15 and surge tank 16, the gas outlet on described blast pipe 12 and drying tower 5 tops is all connected with surge tank 16 by muffler 17, pressure blank pipe in described pressure blank pipe net 14 connects the import of steam jet pump 15, the outlet of described steam jet pump 15 connects described blast pipe 9, and the negative pressure mouth of described steam jet pump 15 connects described surge tank 16; Described discharge pipe 10 connects described crystallisation cycle pipeline 11 by a secondary air channel 18; Described secondary air channel 18 is provided with check valve 19 and mends air-valve 20.
The drying system of the described high retraction polyester chip of the present embodiment, its beneficial effect is: section is carried out crystallization in pulsed crystallizing bed 1, then entering drying tower 5 is dried, drying tower 5 connects discharge pipe 10 and muffler 17, discharge pipe 10 blows out after dry compressed air is dried the section in drying tower 5 and enters surge tank 16 from muffler 17, gas recovery in surge tank 16 is drawn in mole sieve drier 6 and is dried through steam jet pump 15, what connect steam jet pump 15 presses blank pipe net 14 simultaneously in addition, can be to blowing into compressed air in mole sieve drier 6, the air-flow dry through mole sieve drier 6 is heated again once through drying heater 8, guaranteed the drying property of air-flow, the air-flow being dried is got back to discharge pipe 10 and is entered in drying tower 5, thereby reach, recycle.The wind blowing out from pulsed crystallizing bed 1 enters crystallization heater 2 through crystallisation cycle pipeline 11 and carries out heating and dehumidification, is blown into cyclone dust collectors 4 again by crystallization blower fan 3, and air-flow is recycled at crystal system; Discharge pipe 10 is connected with secondary air channel 18 and pulsed crystallizing bed 1 by mending air-valve 20, to supplement the air-flow of institute's loss in crystallization process, guarantees the normal operation of crystal system.
Embodiment 2:
As shown in Figure 2, the drying system of the described high retraction polyester chip of the present embodiment, as different from Example 1: described air bleeding valve 13 and benefit air-valve 20 are controlled by same the time relay 21.
The beneficial effect of the present embodiment is can, according to the loss situation of air-flow, and periodically control paired pulses formula crystallizing bed 1 by the time relay 21, mend wind in actual production.
Embodiment 3:
The drying means of the described high retraction polyester chip of the present embodiment, the method adopts the drying system of the high retraction polyester chip described in embodiment 1, it is characterized in that: in use procedure, steam jet pump import department enters after compressed air, negative pressure mouth produces negative pressure the recyclable steam in surge tank is sucked and deliver in mole sieve drier, recyclable steam enters drier after mixing with compressed air dry, the air-flow dry through mole sieve drier is heated again once through drying heater, guaranteed the drying property of air-flow, the air-flow being dried is got back to discharge pipe and is entered in drying tower, thereby reach, recycle.
Specific embodiment described herein is only to design of the present invention explanation for example.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Claims (3)
1. a drying system for high retraction polyester chip, comprises pulsed crystallizing bed (1), crystallization heater (2), crystallization blower fan (3), cyclone dust collectors (4), drying tower (5), mole sieve drier (6), pressure-reducing valve (7), drying heater (8) and blast pipe (9) and discharge pipe (10); Described pulsed crystallizing bed (1) is connected with crystallisation cycle pipeline (11), described crystallization heater (2), crystallization blower fan (3) and cyclone dust collectors (4) are all arranged on crystallisation cycle pipeline (11), described circulating line also has a blast pipe (12), and described blast pipe (12) is provided with air bleeding valve (13); Described blast pipe (9) connects discharge pipe (10) by mole sieve drier (6), pressure-reducing valve (7), drying heater (8), described discharge pipe (10) connects the air inlet of drying tower (5) bottom, and described pulsed crystallizing bed (1) is positioned at drying tower (5) top and is attached thereto logical; It is characterized in that also comprising pressure blank pipe net (14), steam jet pump (15) and surge tank (16), described blast pipe (12) all passes through muffler (17) with the gas outlet on drying tower (5) top and is connected with surge tank (16), pressure blank pipe in described pressure blank pipe net (14) connects the import of steam jet pump (15), the outlet of described steam jet pump (15) connects described blast pipe (9), and the negative pressure mouth of described steam jet pump (15) connects described surge tank (16); Described discharge pipe (10) connects described crystallisation cycle pipeline (11) by a secondary air channel (18); Described secondary air channel (18) is provided with check valve (19) and mends air-valve (20).
2. the drying system of high retraction polyester chip according to claim 1, is characterized in that described air bleeding valve (13) and mends air-valve (20) being controlled by same the time relay (21).
3. the drying means of a high retraction polyester chip, the method adopts the drying system of high retraction polyester chip as claimed in claim 1, it is characterized in that: in use procedure, steam jet pump import department enters after compressed air, negative pressure mouth produces negative pressure the recyclable steam in surge tank is sucked and deliver in mole sieve drier, recyclable steam enters drier after mixing with compressed air dry, the air-flow dry through mole sieve drier is heated again once through drying heater, guaranteed the drying property of air-flow, the air-flow being dried is got back to discharge pipe and is entered in drying tower, thereby reach, recycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410175455.7A CN103950124A (en) | 2014-04-28 | 2014-04-28 | System and method for drying high-shrinkage polyester chips |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410175455.7A CN103950124A (en) | 2014-04-28 | 2014-04-28 | System and method for drying high-shrinkage polyester chips |
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| CN103950124A true CN103950124A (en) | 2014-07-30 |
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| CN201410175455.7A Pending CN103950124A (en) | 2014-04-28 | 2014-04-28 | System and method for drying high-shrinkage polyester chips |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970304A (en) * | 2016-07-21 | 2016-09-28 | 徐州斯尔克纤维科技股份有限公司 | But automatic switch air intake system's crystallization bed |
| CN113715197A (en) * | 2021-06-22 | 2021-11-30 | 冯越 | Drying method suitable for high-shrinkage polyester chips |
-
2014
- 2014-04-28 CN CN201410175455.7A patent/CN103950124A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105970304A (en) * | 2016-07-21 | 2016-09-28 | 徐州斯尔克纤维科技股份有限公司 | But automatic switch air intake system's crystallization bed |
| CN113715197A (en) * | 2021-06-22 | 2021-11-30 | 冯越 | Drying method suitable for high-shrinkage polyester chips |
| CN113715197B (en) * | 2021-06-22 | 2023-10-31 | 江苏利德塑业有限公司 | Drying method suitable for high-shrinkage polyester chips |
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Application publication date: 20140730 |