CN208296468U - A kind of drying cooling system of nylon polymerization slice production - Google Patents
A kind of drying cooling system of nylon polymerization slice production Download PDFInfo
- Publication number
- CN208296468U CN208296468U CN201820488659.XU CN201820488659U CN208296468U CN 208296468 U CN208296468 U CN 208296468U CN 201820488659 U CN201820488659 U CN 201820488659U CN 208296468 U CN208296468 U CN 208296468U
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- China
- Prior art keywords
- slice
- nitrogen
- pipeline
- cooler
- drying
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Abstract
The utility model provides a kind of drying cooling system of nylon polymerization slice production, including drying tower, slice cooler, chip bunker and lower tonifying Qi pipeline；The drying tower, the slice cooler, the chip bunker are sequentially connected from top to bottom；The gas of the lower tonifying Qi pipeline enters the drying tower by the slice cooler from bottom to top.The utility model solves the disadvantages of prior art device investment is high, energy consumption is high, slice moisture content is higher.
Description
[technical field]
The utility model relates to a kind of drying cooling systems of nylon polymerization slice production.
[background technique]
In the production process of nylon polymerization slice, chip drying be by the slice of High water cut in drying tower and hot nitrogen
(generally 110 DEG C~120 DEG C) inversely contact, and surface and internal water are removed, the water content of slice is down to a degree of
Process, after nitrogen is contacted with wet slice, moisture content is increased in nitrogen, need to be (general far below the temperature of dew point by being cooled to
It is 8.5 DEG C~10 DEG C), it removes steam condensation at liquid water, then re-uses；Slice cooling is because being sliced temperature after dry
Degree is higher, needs that slice is cooled to 40 DEG C or less before entering feed bin.
The slice cooler industrially used at present is commonly N2Cooler, i.e., with N after cooling2It is inversely contacted with slice,
Achieve the purpose that cooling slice, while N2After heat exchanger and cooling water heat exchange are cooling, recirculate and utilize, have as follows
Disadvantage:
Firstly, tonifying Qi pipeline is to carry out tonifying Qi from top to bottom at present, the part hot nitrogen of dry tower bottom is caused to enter cold
But the case where relative humidity increases and slice is made to get damp in cooling tower is caused in tower, after cooling；
Furthermore it is air cooling equipment by cooling tower, a large amount of N need to be used2As air-cooled gas source, then by N2Draw cooling tower
Outside is cooling to be recycled, and not only wastes more N2, and secondary heat exchange process, cause heat exchange efficiency low, causes larger
Cost of equipment and energy consumption cost；
Third, in order to prevent, the cooling wind of cooling tower take slice out of, need between drying tower and cooling tower, cooling
One high-cost swivel feeding valve is installed respectively, and cooling tower volume is more huge between tower and feed bin；
4th, there is dry dead zone when being initially powered up in traditional drying system, i.e., dry tower bottom tapering region, so that portion
Cutting material can not be dried, and longer into influence time after cooler and feed bin.
Therefore, a kind of low-cost energy-saving chip drying-cooling system is explored for promoting the performance of enterprises and environmental benefit extremely
It closes important.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of drying cooling system of nylon polymerization slice production
System solves the disadvantages of prior art device investment is high, energy consumption is high, slice moisture content is higher.
The utility model is realized in this way: a kind of drying cooling system of nylon polymerization slice production, including drying tower,
Slice cooler, chip bunker and lower tonifying Qi pipeline；The drying tower, the slice cooler, the chip bunker are from upper
It is sequentially connected under and；The gas of the lower tonifying Qi pipeline enters the drying tower by the slice cooler from bottom to top.
Further, the lower tonifying Qi pipeline is connected between the bottom and chip bunker of the slice cooler or connects
On chip bunker, the lower tonifying Qi pipeline is 1.5~3bar nitrogen supplement pipe.
Further, the chip bunker includes the first feed bin and the second feed bin, on first feed bin and the second feed bin
It is respectively equipped with a pressure sensor and nitrogen supplement pipe, nitrogen supplement pipe is 0.5bar nitrogen supplement pipe.
Further, the first Pneumatic valve of the blowdown pipe road setting, first Pneumatic valve are controlled by PIC-1401
Aperture.
Further, the utility model further includes the first nitrogen heating pipeline, the second nitrogen heating pipeline, upper blowdown pipe
Road, outlet pipe, heat exchanger and liquid seal trough；One end of first nitrogen heating pipeline connect the lower section of the drying tower into
Port, the other end then connect the upper tonifying Qi pipeline by the heat exchanger；Described outlet pipe one end connects the drying tower
Top gas outlet, the other end connects the liquid seal trough by the heat exchanger；One end of the second nitrogen heating pipeline connects
The middle section air inlet of the drying tower is connect, the other end is then connected on the outlet pipe.
Further, the second Pneumatic valve of the upper blowdown pipe road setting, second Pneumatic valve are controlled by PIC-1401
Aperture processed, the upper tonifying Qi pipeline are 0.5bar nitrogen supplement pipe.
Further, the slice cooler is water cooler；It is arranged between the drying tower and the slice cooler
Common valve is without setting swivel feeding valve.
Further, the utility model further includes a hot nitrogen branch, and one end of the hot nitrogen branch is connected to described
One nitrogen heating tube road, the other end are connected to the bottom of the drying tower.
Utility model has the advantages that
(1) tonifying Qi pipeline makes the hot nitrogen in drying tower walk from bottom to top using tonifying Qi is carried out from bottom to top, will not
Into in the slice cooler of lower section, the case where making slice get damp because of relative humidity increase in slice cooler is effectively prevented
Occur；
(2) it is water cooling plant by slice cooler, has greatly saved N2Resource is not necessarily to secondary heat exchange, heat exchange efficiency
Height, cost substantially reduce；
(3) slice cooler is water cooling plant, and volume greatly reduces, and does not have air outlet, therefore will not take slice out of,
Swivel feeding valve between drying tower and cooling tower can be changed to common valve, to reduce cost；
(4) hot nitrogen branch is added in dry tower bottom, dries tapering region can also sufficiently, avoid dry dead zone.
[Detailed description of the invention]
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the dry cooling system of the utility model.
[specific embodiment]
Refering to Figure 1, the drying cooling system that the nylon polymerization slice of the utility model produces, including drying tower 1,
Slice cooler 2, chip bunker 3 and lower tonifying Qi pipeline 41；The drying tower 1, the slice cooler 2, the Slice material
Storehouse 3 is sequentially connected from top to bottom；The gas (nitrogen) of the lower tonifying Qi pipeline 41 is entered from bottom to top by the slice cooler 2
The drying tower 1.Tonifying Qi is carried out using lower tonifying Qi pipeline 41 from bottom to top, the hot nitrogen in drying tower 1 is made to go from bottom to top
It walks, will not enter in the slice cooler 2 of lower section, effectively prevent making to be sliced because of relative humidity increase in slice cooler 2
The case where getting damp.
The lower tonifying Qi pipeline 41, which is connected between the bottom and chip bunker 3 of the slice cooler 2 or is connected to, to be cut
On piece feed bin 3, the lower tonifying Qi pipeline 41 is 1.5~3bar nitrogen supplement pipe, usually takes 2.5bar nitrogen, air pressure size foot
Slice cooler 2 will not be entered with the nitrogen guaranteed in drying tower 1.
The chip bunker 3 includes the first feed bin and the second feed bin, is respectively equipped on first feed bin and the second feed bin
One pressure sensor 31 and nitrogen supplement pipe 32, and it is 0.5bar nitrogen supplement pipe which, which supplements pipe 32, in the first feed bin and
Second feed bin carries out keeping positive pressure when slice is packaged, and outside air will not be made to enter influence slice.
First Pneumatic valve 51 is set on the lower tonifying Qi pipeline 41, which is controlled out by PIC-1401
Degree, to realize Automatic Control.
The utility model further includes the first nitrogen heating pipeline 6, the second nitrogen heating pipeline 7, upper tonifying Qi pipeline 42, outlet
Pipeline 43, heat exchanger 8 and liquid seal trough 9；The first nitrogen heating pipeline 6 is by sequentially connected air volume meter 63, the first nitrogen
Heater 61, the first blower 62 and oxygen-eliminating device 64 are constituted, and one end that the first nitrogen heats pipeline 6 passes through described in valve H connection
The lower section air inlet 11 of drying tower 1, the other end then connect the upper tonifying Qi pipeline 42 by the heat exchanger 8；The escape pipe
Road 43 is made of slice filter 431 and the second blower 432, and described 43 one end of outlet pipe connects the top of the drying tower 1
Gas outlet 12, the other end connect the liquid seal trough 9 by the heat exchanger 8；The second nitrogen heating pipeline 7 is the second nitrogen
Heater 71, one end connect the middle section air inlet 13 of the drying tower 1 by valve J, and the other end is then connected to the outlet
On pipeline 43.
Second Pneumatic valve 52 is set on the upper tonifying Qi pipeline 42, which is controlled out by PIC-1401
Degree, the upper tonifying Qi pipeline 42 is 0.5bar nitrogen supplement pipe, to nitrogen heater 61 and the supply of the second nitrogen heater 71
Nitrogen.
First Pneumatic valve 51 and the second Pneumatic valve 52 control aperture by PIC-1401, can be controlled by a selection
Program selects control, and more preferably, and the first Pneumatic valve and the second Pneumatic valve are changeable to linkage.
The slice cooler 2 is water cooler；Common valve F is set between the drying tower 1 and the slice cooler 2
Without setting swivel feeding valve.Slice cooler 2 is water cooling plant, has greatly saved nitrogen resource, is not necessarily to secondary heat exchange, heat exchange
It is high-efficient, the use of blower is also eliminated, cost substantially reduces；And the volume of water cooling plant greatly reduces, and does not have outlet air
Mouthful, therefore slice will not be taken out of, the swivel feeding valve between drying tower and cooling tower can be changed to common valve, to reduce
Cost；
The utility model further includes a hot nitrogen branch 44, and one end of the hot nitrogen branch 44 is connected to institute by valve G
It states on the first nitrogen heating pipeline 6, the other end is connected between the bottom and common valve F of the drying tower 1.In dry tower bottom
Add hot nitrogen branch 44, just make booting begin the used time, hot nitrogen can by hot nitrogen branch 44 by drying tower 1 bottommost into
Enter, dry the tapering region of 1 bottom of drying tower can also sufficiently, avoids dry dead zone.
The concrete operations mode of the utility model are as follows:
1, before slice enters drying tower 1, common valve F is closed, selects the first Pneumatic valve 52 to supplement nitrogen, simultaneously closes off valve
H opens valve G, and hot nitrogen can in this way entered by the cone bottom of drying tower 1, can also play drying to the wet slice at cone bottom
Dry dead zone is eliminated in effect.Air quantity is adjusted to the 20% of normal air quantity, it will be in drying tower 1 by the second nitrogen heater 71
The temperature of section air inlet 13 rises to 115 DEG C, by the first nitrogen heater 61 by the temperature liter of the lower section air inlet 11 of drying tower 1
To 114 DEG C；
2, slice did not had the lower section nitrogen inlet 11 (nitrogen inlet of the first nitrogen heater 61 of connection) of drying tower 1
Afterwards, valve H is opened, air quantity is risen into normal dry air quantity；
3, when the material position of tower 1 to be dried rises to normal material position, opening is connected between the first feed bin and nitrogen supplement pipe 32
Valve A1, and be connected to the valve B1 of the first feed bin Yu the lower tonifying Qi pipeline 41, pressure in the first feed bin risen to
0.3bar makes pressure of silo be higher than pressure in drying tower 1 and cooler 2, prevents gas flow down in drying tower 1；
4, valve A1, valve G are closed, the bottom common valve F of drying tower 1 is opened, aeration valve is switched into the first Pneumatic valve
51 controls, open the valve C1 being connected between the first feed bin and swivel feeding valve E, the first gas control are controlled by PIC_1401
The air compensation of valve 51 makes the pressure of PIC_1401 maintain 15Kpa, keeps fresh nitrogen upward by the first feed bin of chip bunker 3
Supplement；
5, the valve A2 being connected between the second feed bin and nitrogen supplement pipe 32 is opened, by second in conversion material storehouse before packing
Pressure in feed bin rises to 0.3bar, and purpose closes A2 with step 3, and opening is connected between the second feed bin and swivel feeding valve E
C2 and be connected to the valve B2 of the second feed bin Yu the lower tonifying Qi pipeline 41, C1 is closed, by the second feed bin upwards through valve C2
Tonifying Qi.If packing the slice of the first feed bin, the bottom valve and valve A1 of the first feed bin are opened, keeps positive pressure in the first feed bin.This
System can make finished product be sliced moisture content≤400ppm.
Although those familiar with the art answers the foregoing describe specific embodiment of the present utility model
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (8)
1. a kind of drying cooling system of nylon polymerization slice production, it is characterised in that: including drying tower, slice cooler, cut
Piece feed bin and lower tonifying Qi pipeline；The drying tower, the slice cooler, the chip bunker are sequentially connected from top to bottom；
The gas of the lower tonifying Qi pipeline enters the drying tower by the slice cooler from bottom to top.
2. a kind of drying cooling system of nylon polymerization slice production as described in claim 1, it is characterised in that: the lower benefit
Air pipe is connected between the bottom and chip bunker of the slice cooler or is connected on chip bunker, the lower blowdown pipe
Road is 1.5~3bar nitrogen supplement pipe.
3. a kind of drying cooling system of nylon polymerization slice production as claimed in claim 2, it is characterised in that: the slice
Feed bin includes the first feed bin and the second feed bin, is respectively equipped with a pressure sensor and nitrogen on first feed bin and the second feed bin
Supplement pipe, nitrogen supplement pipe are 0.5bar nitrogen supplement pipe.
4. a kind of drying cooling system of nylon polymerization slice production as described in claim 1, it is characterised in that: the lower benefit
First Pneumatic valve is set on air pipe, which controls aperture by PIC-1401.
5. a kind of drying cooling system of nylon polymerization slice production as described in claim 1, it is characterised in that: further include the
One nitrogen heats pipeline, the second nitrogen heating pipeline, upper tonifying Qi pipeline, outlet pipe, heat exchanger and liquid seal trough；Described first
One end of nitrogen heating pipeline connects the lower section air inlet of the drying tower, and the other end then passes through the heat exchanger and connects on described
Tonifying Qi pipeline；Described outlet pipe one end connects the top gas outlet of the drying tower, and the other end is connected by the heat exchanger
The liquid seal trough；One end of the second nitrogen heating pipeline connects the middle section air inlet of the drying tower, and the other end then connects
On the outlet pipe.
6. a kind of drying cooling system of nylon polymerization slice production as claimed in claim 5, it is characterised in that: the upper benefit
Second Pneumatic valve is set on air pipe, which controls aperture by PIC-1401, and the upper tonifying Qi pipeline is
0.5bar nitrogen supplement pipe.
7. a kind of drying cooling system of nylon polymerization slice production as claimed in claim 5, it is characterised in that: the slice
Cooler is water cooler；Common valve is set between the drying tower and the slice cooler without setting swivel feeding valve.
8. a kind of drying cooling system of nylon polymerization slice production as claimed in claim 5, it is characterised in that: further include one
Hot nitrogen branch, one end of the hot nitrogen branch are connected to the first nitrogen heating tube road, and the other end is connected to described dry
The bottom of dry tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488659.XU CN208296468U (en) | 2018-04-08 | 2018-04-08 | A kind of drying cooling system of nylon polymerization slice production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820488659.XU CN208296468U (en) | 2018-04-08 | 2018-04-08 | A kind of drying cooling system of nylon polymerization slice production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208296468U true CN208296468U (en) | 2018-12-28 |
Family
ID=64725962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820488659.XU Expired - Fee Related CN208296468U (en) | 2018-04-08 | 2018-04-08 | A kind of drying cooling system of nylon polymerization slice production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208296468U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444230A (en) * | 2018-04-08 | 2018-08-24 | 长乐力恒锦纶科技有限公司 | A kind of drying cooling system of nylon polymerization slice production |
-
2018
- 2018-04-08 CN CN201820488659.XU patent/CN208296468U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108444230A (en) * | 2018-04-08 | 2018-08-24 | 长乐力恒锦纶科技有限公司 | A kind of drying cooling system of nylon polymerization slice production |
| CN108444230B (en) * | 2018-04-08 | 2023-11-17 | 福建省力恒锦纶实业有限公司 | Drying and cooling system for nylon polymer slice production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181228 |