CN201756523U - Novel drying tower for polyamide PA6 in polymerization - Google Patents
Novel drying tower for polyamide PA6 in polymerization Download PDFInfo
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- CN201756523U CN201756523U CN201020215443XU CN201020215443U CN201756523U CN 201756523 U CN201756523 U CN 201756523U CN 201020215443X U CN201020215443X U CN 201020215443XU CN 201020215443 U CN201020215443 U CN 201020215443U CN 201756523 U CN201756523 U CN 201756523U
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- sparger
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- drying tower
- drying
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Abstract
The utility model relates to a novel drying tower for polyamide PA6 in polymerization, which consists of an upper enclosure end, a cylinder, a taper and a nitrogen distributor, wherein the upper enclosure end, the cylinder and the taper are linked together from top to bottom; and the nitrogen distributor including an upper one and a lower one is equipped inside the drying tower.
Description
Technical field
The utility model belongs to chemical industry and makes the field, relates in a kind of polyamide fibre PA6 successive polymerization production process wet section of polyamide fibre PA6 carried out the device of successive drying, is specifically related to the novel dried tower of a kind of polyamide fibre PA6 polymerization.
Background technology
Domestic common rotary drum drier only is fit to the production of intermittent type abortion amount at present, is not suitable for the big output production of continous way.And domestic common successive drying tower can not satisfy the requirement that production meets the dried section of high-speed spinning usefulness polyamide fibre PA6, and this mainly shows following three aspects:
1) owing to generally adopted the sub-thread nitrogen drying, the setting range that primarily shows as throughput is narrow, and rate ratio is lower; Secondly the crushing of nitrogen is bigger, and is high to the pressure requirement of nitrogen circulation, and section is moisture difficult stable after the drying, and the nitrogen energy consumption obviously increases after the output raising;
2) adopt radially nitrogen gas stream drying tower, because the variation of nitrogen flow and air pressure, the drying air stream that causes easily entering in the drying tower gets muddled, thereby causes the section movement disorder, and the moisture of section finally done in influence;
3) the domestic nitrogen sparger that generally adopts is the aperture sparger, when output takes place to adjust variation or start-stop car, stops up the nitrogen outlet of nitrogen sparger easily, thereby reduces the drying effect of polyamide fibre PA6 section.
In order to solve the problem that prior art exists, we have invented in a kind of polyamide fibre PA6 successive polymerization production process wet section of polyamide fibre PA6 have been carried out the device of successive drying, are particularly suitable for producing high-quality long filament level high-speed spun PA PA6 and do section.The polyamide fibre PA6 section of extraction back still contains 10～15% moisture content after dehydration, for satisfying the high speed spinning requirement, the water content of section should be below 0.06%.Successive drying is exactly to utilize the exsiccant hot nitrogen to remove moisture content in the section with convection type in drying tower.
We compare with existing drying tower by the novel dried tower of polyamide fibre PA6 polymerization of invention, have the following advantages:
1) structure of this drying tower can adjust accordingly according to the size of dry sliced amount, and output scope wide accommodation arrives daily output hundreds of ton tens tons of daily outputs and all can be suitable for;
2) adopted for two steps dry, two strands of nitrogen drying air-flows, independent control respectively, and nitrogen pressure is required low, significantly reduced the loss of nitrogen;
3) nitrogen sparger that is adopted and Small angle (35 degree and 45 degree) cone structure, and bottom taper section deoscillator, means such as tower wall mirror mirror polish guarantee that section form with the stability column plug flow in this drying tower evenly flows;
4) the nitrogen sparger that is adopted is the axial flow sparger of the big opening of high precision, has guaranteed the exsiccant homogeneity, has guaranteed the uniformity coefficient that nitrogen distributes on the cross section;
5) operation control flexibly.Nitrogen of the present utility model is because the mode that adopts segmentation to add, this drying tower is provided with a plurality of temperature-measuring ports, pressure tap and thief hole, can check the drying process of section easily, assay is carried out in section, can nitrogen flow, nitrogen pressure and temperature etc. be adjusted respectively and control according to detection case.
The utility model content
The utility model purpose is to provide a kind of polyamide fibre PA6 polymerization novel dried tower.
Drying tower described in the utility model is by upper cover 3, cylindrical shell 5, and cone 13 and nitrogen sparger are formed.Wherein, upper cover 3, cylindrical shell 5 and cone 13 combine as a whole from top to bottom.The nitrogen sparger is divided into top nitrogen sparger and bottom nitrogen sparger, all is installed in drying tower inside.
Wherein, described top nitrogen sparger 7 is formed by connecting by communicating pipe 7-3 by 2 inner nitrogen distribution member 7-1 of circle and outside nitrogen distribution member 7-2, is installed in the mid-way of cylindrical shell 5 inside.On the outer fix of top nitrogen sparger, 2 last nitrogen that are superimposed up and down are installed are respectively all pressed 6,2 nitrogen inlet 8 in chamber and 2 nitrogen pressure tap 9.
Described bottom nitrogen sparger is installed in the bottom position of cone 13 inside, is superposeed up and down by nitrogen sparger 1 and following nitrogen sparger 2 19 down and forms.On the outer fix of following nitrogen sparger 1, nitrogen is all pressed chamber 1 under installing respectively, and following nitrogen inlet 1 and following nitrogen pressure tap 1 are on the outer fix of following nitrogen sparger 2 19, nitrogen is all pressed chamber 2 18 under installing respectively, following nitrogen inlet 2 20 and following nitrogen pressure tap 2 21.Section deoscillator 22 is installed in down the below of nitrogen sparger 2 19.
Described upper cover 3 tops are installed section charging 1, section sparger 2, visor 24, level gage mouth 25, damp and hot nitrogen outlet 26 respectively.
Described cylindrical shell 5 is provided with or installs temperature-measuring port 4, pressure tap 10, bearing 11, thief hole 12 respectively.Wherein, satisfy and produce the requirement that high-quality polyamide fibre PA6 does section, in this drying tower, be provided with 6 places, 4 temperature-measuring ports, be distributed on the whole cylindrical shell for guaranteeing the homogeneity of section temperature distribution in this drying tower.This temperature-measuring port can increase according to the size of arts demand and drying tower and reduce.
The lowermost end of described cone 13 is provided with section outlet 23.
Nitrogen sparger and the following nitrogen sparger gone up of the present utility model, adopted the flow dividing structure of the axial flow of the big opening of high precision, thereby high precision has guaranteed to feed the homogeneity of this drying tower inside xeothermic nitrogen on the cross section, and this structure can not stopped up the mouth that distributes because of the variation of nitrogen flow or the reason of start-stop car.Owing to can regulate the flow that feeds xeothermic nitrogen in this drying tower according to the section amount that enters in this drying tower easily, thereby can satisfy the requirement of various output, guarantee the drying effect of the wet section of polyamide fibre PA6 in this drying tower, flexible operating, control is convenient.
Drying tower described in the utility model, can well finish the drying of the wet section of polyamide fibre PA6 successive polymerization production process polyamide fibre PA6, can obviously improve the flow state of polyamide fibre PA6 section in this drying tower, mode with the stability column plug flow, according to the motion of deadweight from top to down, to reach the effect that fully contacts with the xeothermic nitrogen of countercurrent flow from bottom to top.Adopt segmentation to send the mode of nitrogen, significantly strengthened the drying effect of polyamide fibre PA6 section, guaranteed the degree of uniformity behind the polyamide fibre PA6 chip drying, satisfy and produce the requirement that high-quality long filament level high-speed spun PA PA6 does section.
Description of drawings
Fig. 1, exemplary embodiments schematic overview of the present utility model;
Fig. 2, exemplary embodiments subdivision graph of the present utility model,
Wherein, Fig. 2 a, last nitrogen sparger, Fig. 2 b, following nitrogen sparger one;
Among the figure: 1 section feed-pipe, 2 section spargers, 3 upper covers, 4 temperature-measuring ports, 5 cylindrical shells, nitrogen is all pressed the chamber on 6,7 top nitrogen spargers (comprise inner nitrogen distribution member 7-1, outside nitrogen distribution member 7-2 and communicating pipe 7-3), 8 nitrogen inlet, 9 nitrogen pressure tap, 10 cylindrical shell pressure tap, 11 bearings, 12 thief holes, 13 cones, 14 times nitrogen is all pressed chamber one, 15 times nitrogen spargers one, 16 nitrogen inlet, 17 nitrogen pressure tap, 18 times nitrogen is all pressed chamber two, 19 times nitrogen spargers two, 20 nitrogen inlet, 21 nitrogen pressure tap, 22 section deoscillators, 23 section outlet pipes, 24 visors, 25 level gage interfaces, compositions such as 26 wet nitrogen outlet pipes.
Embodiment
By following specific embodiment the utility model is done more detailed explanation, but do not play restriction.
Embodiment 1, drying tower
The novel dried tower of polyamide fibre PA6 polymerization, it is characterized in that, described drying tower is by upper cover (3), cylindrical shell (5), cone (13) and nitrogen sparger are formed, wherein, upper cover (3), cylindrical shell (5) and cone (13) combine as a whole from top to bottom, the nitrogen sparger is divided into top nitrogen sparger and bottom nitrogen sparger, all be installed in drying tower inside, wherein, described top nitrogen sparger (7) is formed by connecting by communicating pipe (7-3) by 2 circle inner nitrogen distribution member (7-1) and outside nitrogen distribution member (7-2), is installed in the inner mid-way of cylindrical shell (5), described bottom nitrogen sparger is superposeed up and down by following nitrogen sparger one (15) and following nitrogen sparger two (19) and forms, and is installed in the inner bottom position of cone (13).
Embodiment 2, drying tower
The novel dried tower of polyamide fibre PA6 polymerization, by upper cover 3, cylindrical shell 5, cone 13 and nitrogen sparger are formed, wherein, and upper cover 3, cylindrical shell 5 and cone 13 combine as a whole from top to bottom; Described top nitrogen sparger 7, be installed in the mid-way of cylindrical shell 5 inside, be formed by connecting by communicating pipe (7-3) by 2 circle inner nitrogen distribution member (7-1) and outside nitrogen distribution member (7-2), on the outer fix of top nitrogen sparger 7, one side is installed 2 last nitrogen that are superimposed up and down and is all pressed chamber 6, and opposite side is installed 2 nitrogen inlet 8 and 2 nitrogen pressure tap 9 are set respectively; Described bottom nitrogen sparger is installed in the bottom position of cone 13 inside, form by descending nitrogen sparger 1 and following nitrogen sparger 2 19 to superpose up and down, on the outer fix of following nitrogen sparger 1, nitrogen was all pressed chamber 1 under one side was installed, opposite side is provided with down nitrogen inlet 1 and following nitrogen pressure tap 1, on the outer fix of following nitrogen sparger 2 19, nitrogen was all pressed chamber 2 18 under one side was installed, opposite side is provided with down nitrogen inlet 2 20 and following nitrogen pressure tap 2 21, and section deoscillator 22 is installed in down the below of nitrogen sparger 2 19.
The application of embodiment 3, drying tower
The wet section of polyamide fibre PA6 adds from the top 1 section feed-pipe of this drying tower, and the uniform distribution through 2 section spargers is assigned on the cross section of this drying tower, and relies on deadweight from top to bottom to flow.2 section spargers are the cape structure, it mainly acts on is the shunting section, the stable plug flow of formation in this drying tower that is beneficial to cut into slices is convenient to polyamide fibre PA6 section in descending process, fully contacts with the xeothermic nitrogen that comes from the nitrogen sparger, evenly dry.
Xeothermic nitrogen enters this drying tower inside respectively from two:
One is a top nitrogen sparger, and it mainly is that 8 nitrogen inlet from this drying tower middle and upper part enter, and the xeothermic nitrogen that enters here mainly is the surperficial moisture content of the wet section of dry polyamide fibre PA6.Because this stage needs exsiccant moisture content more, top nitrogen sparger in the utility model has adopted the nitrogen sparger that is formed by connecting by communicating pipe 7-3 by 2 inner nitrogen distribution member 7-1 of circle and outside nitrogen distribution member 7-2, it comprises that going up nitrogen for two all presses 6, two nitrogen inlet 8 in chamber and two nitrogen pressure tap 9 to form.The sparger of combining by two inner nitrogen distribution member and outside nitrogen distribution member, xeothermic nitrogen quilt equably, flow ground is distributed on the cross section of cylindrical shell with the form of axial flow greatly, in streamlined mode, with descending reverse contact of the wet section of polyamide fibre PA6, finish the drying of the wet section of polyamide fibre PA6 from bottom to up.Enter the temperature and the flow of nitrogen in this drying tower for the ease of control, be provided with 4 temperature-measuring ports in the many places, middle and upper part of this drying tower, the quantity of temperature-measuring port can be determined by the size of processing requirement and drying tower; Be the convenient drying effect of grasping polyamide fibre PA6 section simultaneously, below last nitrogen sparger, be provided with two section 12 thief holes.
It two is a bottom nitrogen sparger, and it mainly is that 16 nitrogen inlet and 20 nitrogen inlet from this drying tower bottom enter, and the xeothermic nitrogen that enters here mainly is that drying is hung oneself and still remained in the inner moisture content of polyamide fibre PA6 section after going up nitrogen sparger drying.Need exsiccant moisture content and top nitrogen sparger to need exsiccant moisture content to compare in this stage, to lack relatively, but because the inner moisture content of polyamide fibre PA6 section is not easy to drying, and the homogeneity that needs balanced dry back polyamide fibre PA6 to cut into slices, bottom nitrogen sparger in the utility model comprises two-stage nitrogen sparger, and it comprises that 14 times nitrogen all presses chamber one, 15 times nitrogen spargers one, 16 nitrogen inlet, 17 nitrogen pressure tap, 18 times nitrogen all to press chamber two, 19 times nitrogen spargers two, 20 nitrogen inlet, 21 nitrogen pressure tap.
From the xeothermic nitrogen of last nitrogen sparger and following nitrogen sparger equably from bottom to up, through with after the reverse convection current of descending section fully contacts, at last from the 26 wet nitrogen outlet pipes discharges at this drying tower top.The damp and hot nitrogen of discharging from 26 wet nitrogen outlet pipes can use after purification, dehumidifying and deoxidation in recirculation.
13 cones of the present utility model adopt Small angle (35 degree are to 45 degree) cone structure, and 22 section deoscillators bottom this drying tower, and nitrogen sparger on 7,15 times nitrogen spargers one, 19 times nitrogen spargers are second-class together, and cooperate tower wall mirror mirror polish, guarantee that being sliced into plug flow evenly flows downward.
Section after the final drying is discharged from 23 section outlets of this drying tower bottom and is sent to next cooling workshop section.
Claims (1)
1. the novel dried tower of polyamide fibre PA6 polymerization, it is characterized in that, described drying tower is by upper cover (3), cylindrical shell (5), cone (13) and nitrogen sparger are formed, wherein, upper cover (3), cylindrical shell (5) and cone (13) combine as a whole from top to bottom, the nitrogen sparger is divided into top nitrogen sparger and bottom nitrogen sparger, all be installed in drying tower inside, wherein, described top nitrogen sparger (7) is formed by connecting by communicating pipe (7-3) by 2 circle inner nitrogen distribution member (7-1) and outside nitrogen distribution member (7-2), is installed in the inner mid-way of cylindrical shell (5), described bottom nitrogen sparger is superposeed up and down by following nitrogen sparger one (15) and following nitrogen sparger two (19) and forms, and is installed in the inner bottom position of cone (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020215443XU CN201756523U (en) | 2010-06-01 | 2010-06-01 | Novel drying tower for polyamide PA6 in polymerization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020215443XU CN201756523U (en) | 2010-06-01 | 2010-06-01 | Novel drying tower for polyamide PA6 in polymerization |
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| Publication Number | Publication Date |
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| CN201756523U true CN201756523U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020215443XU Expired - Lifetime CN201756523U (en) | 2010-06-01 | 2010-06-01 | Novel drying tower for polyamide PA6 in polymerization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842197A (en) * | 2018-08-21 | 2018-11-20 | 林枫 | A kind of Fypro production technology |
-
2010
- 2010-06-01 CN CN201020215443XU patent/CN201756523U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108842197A (en) * | 2018-08-21 | 2018-11-20 | 林枫 | A kind of Fypro production technology |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |
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| CX01 | Expiry of patent term |