CN105713195B - The co-melting method of high-speed spinning nylon chips raw material and its co-melting device - Google Patents
The co-melting method of high-speed spinning nylon chips raw material and its co-melting device Download PDFInfo
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- CN105713195B CN105713195B CN201610077829.0A CN201610077829A CN105713195B CN 105713195 B CN105713195 B CN 105713195B CN 201610077829 A CN201610077829 A CN 201610077829A CN 105713195 B CN105713195 B CN 105713195B
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- caprolactam
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
- C08G69/16—Preparatory processes
Abstract
The present invention relates to the co-melting method of high-speed spinning nylon chips raw material, sheet caprolactam, powdery caprolactam and liquid caprolactam include the following steps successively：Step 1 sub-material, step 2 melting, step 3 mixing, the storage of step 4 assay, step 5 use, and co-melting by the progress of the co-melting device of rack and fusion boiler；Advantages of the present invention：By sheet caprolactam, powdery caprolactam and liquid caprolactam the high-speed spinning nylon chips made of the co-melting method that step 1 sub-material, step 2 melting, step 3 mixing, step 4 assay, step 5 storage use, manufactured high-speed spinning nylon chips have following quality index：Potassium permanganate absorption value ＜ 2, volatile base ＜ 0.3,290nm absorbances ＜ 0.03, acidity ＜ 0.05 or basicity ＜ 0.1, can meet the needs of chemical fibre and plastic product industry, practical performance is good, and the simple production process in production method, can reduce the impurity content in the caprolactam of production.
Description
Technical field
The present invention relates to the co-melting method of high-speed spinning nylon chips raw material and its co-melting devices.
Background technology
Caprolactam is important one of Organic Chemicals, is mainly used for generating polyamide by polymerization and being sliced (leading to
Nylon-6 slice or polyamide fibre -6 is often made to be sliced), it can be further processed into nylon fibre, engineering plastics, plastic film, it is existing
Caprolactam in process of production, due to the presence of organic impurities cause production after caprolactam have unstability, these
The presence of impurity can generate the rate of polymerisation and the reaction of rear stage polymerization to be influenced strongly, the easy intensity for influencing fiber,
Heat resistance and coloring, a kind of existing raw material cannot meet the needs of high-quality slice.
Invention content
The technical problem to be solved in the present invention is to provide the co-melting method of high-speed spinning nylon chips raw material and its co-melting device, solutions
There are organic impurities to cause to instability problem in certainly existing caprolactam.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions：High-speed spinning nylon chips are former
Expect co-melting method, including sheet caprolactam, powdery caprolactam and liquid caprolactam, includes the following steps successively：
Step 1：It is according to daily production dosage that sheet caprolactam, powdery caprolactam and liquid caprolactam is equal
Even is divided into several batches that feed intake；
Step 2：It will be melted in the batch input fusion boiler that feeds intake of sheet caprolactam, powdery caprolactam in step 1
Melt into liquid caprolactam, the temperature in fusion boiler is 80~90 DEG C, and nitrogen is passed through in fusion boiler, and the melting time is not less than
2h；
Step 3：It will mix in fusion boiler that liquid caprolactam in step 1 is added in step 2, and mixed
The time is closed not less than 4h；
Step 4：Assay is carried out to the mixing liquid caprolactam sampling mixed in step 3, analysis numerical value refers to
It is designated as：Potassium permanganate absorption value ＜ 2, volatile base ＜ 0.3,290nm absorbances ＜ 0.03, acidity ＜ 0.05 or basicity ＜
0.1；
Step 5：Qualified mixed liquor caprolactam will be examined to get to caprolactam accumulator tank in step 4 by dnockout pumps
It is interior to be used continuously for polymerization.
Preferably, the mass ratio of the sheet caprolactam and powdery caprolactam that are added in step 2 is 4:1~3:2, energy
It realizes good melting, the mass ratio of sheet caprolactam and powdery caprolactam can be adjusted according to different application scenarios,
Practical performance is good.
Preferably, the liquid caprolactam being added in step 3 and the mass ratio that liquid caprolactam is melt into step 2
It is 1:2~3:4, the mass ratio of sheet caprolactam and powdery caprolactam can be adjusted according to different application scenarios, it is practical
Performance is good.
Preferably, the liquid caprolactam in step 2 and step 3 is melted by circulating pump, and melting effect is good, makes
It is good with effect, it is simple in structure.
Preferably, the thickness of sheet caprolactam is 4~5mm, and the grain size of powdery caprolactam is 250~300 mesh, is melted
It is good to melt effect, using effect is good.
Co-melting device, including rack and fusion boiler, fusion boiler are fixedly connected in rack, in the rack above fusion boiler
Equipped with blowing cylinder, it is equipped with vertical clapboard in blowing cylinder, blowing cylinder is separated into adjustable first cavity of size and the by vertical clapboard
Two cavitys, sheet caprolactam are arranged in the first cavity, and powdery caprolactam is arranged in the second cavity, the first cavity and the
The bottom end of two cavitys is equipped with vomit pipe, and the wet tank for placing liquid caprolactam, wet tank are additionally provided in rack
It is connected with fusion boiler, the storage tank of storage caprolactam, the company of storage tank and fusion boiler is equipped in the rack below fusion boiler
Take over is provided with dnockout pumps on road.
Preferably, wet tank is connected with fusion boiler by conveying pipeline, and conveying pipeline is equipped with liquid pump, is arranged in liquid pump
There is flowmeter, can realize and liquid caprolactam is quantitatively adding, practical performance is good, can be controlled according to different products.
Preferably, blowing cylinder is fixedly connected on by adjustable for height upright bar in rack, and upright bar is equipped with and blowing cylinder phase
Reinforcing rib even is adjusted to control the discharging of material in blowing cylinder by the height of upright bar, generates and fly when can prevent material from discharging
It splashes, the setting of reinforcing rib improves the integral strength of blowing cylinder.
Preferably, rack is equipped with bottom plate, and bottom plate is equipped with the fixing groove of stationary storage tanks, and bottom plate is equipped with and upwardly extends
Extension board, extension board, which is equipped with, is fixedly connected with the mounting hole of pipeline, is placed convenient for storage tank, avoids the overturning of storage tank,
The setting of extension board is convenient for the fixation of connecting pipe, reduces the damage of connecting pipe.
Preferably, positioning plate is equipped in blowing cylinder, positioning plate is equipped with the locating slot of fixed vertical clapboard, and positioning plate passes through
Bolt is fixedly connected on blowing cylinder, and Sign Board is provided on blowing cylinder, is convenient for the fixation of vertical clapboard, is bolted reliably,
It is easy for assemble or unload, different outputs is adapted to, practical performance is good, the setting of Sign Board, personal observations easy to operation.
In conclusion advantages of the present invention：Sheet caprolactam, powdery caprolactam and liquid caprolactam are passed through into step
Made of the co-melting method that a rapid sub-material, step 2 melting, step 3 mixing, step 4 assay, step 5 storage use
High-speed spinning nylon chips, manufactured high-speed spinning nylon chips have following quality index：Potassium permanganate absorption value ＜ 2, volatility
Alkali ＜ 0.3,290nm absorbance ＜ 0.03, acidity ＜ 0.05 or basicity ＜ 0.1, can meet chemical fibre and plastic product industry
Demand, practical performance is good, and the simple production process in production method, can reduce production caprolactam in impurity contain
Amount.
It is realized respectively to sheet caprolactam, powdery caprolactam by the first cavity in blowing cylinder and the second cavity
It places, and the discharging to sheet caprolactam, powdery caprolactam is realized by vomit pipe, and realized to liquid by wet tank
The placement of state caprolactam and for amount, and by fusion boiler realize sheet caprolactam, powdery caprolactam, liquid in acyl
Amine it is co-melting, and by adjust vertical clapboard adjust the first cavity and the second cavity size, adapt to different production requirements,
And the co-melting caprolactam of fusion boiler is transported to storage tank by dnockout pumps and is stored, it can realize continuous use, practicability
It can be good.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the structural schematic diagram of the co-melting device of the present invention；
Fig. 2 is the structural schematic diagram of blowing cylinder of the present invention.
Specific implementation mode
Embodiment one:
The co-melting method of high-speed spinning nylon chips raw material, including thickness be 4mm sheet caprolactam, granularity be 250 purposes
Powdery caprolactam and liquid caprolactam, include the following steps successively：
Step 1：It is according to daily production dosage that sheet caprolactam, powdery caprolactam and liquid caprolactam is equal
Even is divided into several batches that feed intake；
Step 2：It will be melted in the batch input fusion boiler that feeds intake of sheet caprolactam, powdery caprolactam in step 1
Melt into liquid caprolactam, the temperature in fusion boiler is 80 DEG C, and nitrogen is passed through in fusion boiler, melting time 4h, and sheet
The mass ratio of caprolactam and powdery caprolactam is 4:1；
Step 3：It will mix in fusion boiler that liquid caprolactam in step 1 is added in step 2, and mixed
The conjunction time is 4h, and the mass ratio that liquid caprolactam is melt into liquid caprolactam and step 2 is 3:4；
Step 4：Assay is carried out to the mixing liquid caprolactam sampling mixed in step 3, analysis numerical value refers to
It is designated as：Potassium permanganate absorption value ＜ 2, volatile base ＜ 0.3,290nm absorbances ＜ 0.03, acidity ＜ 0.05 or basicity ＜ 0.1；
Step 5：Qualified mixed liquor caprolactam is examined to get to caprolactam accumulator tank step 4 kind by dnockout pumps
It is interior to be used continuously for polymerization.
Embodiment two：
The co-melting method of high-speed spinning nylon chips raw material as described in embodiment one, the present embodiment have following difference：
Sheet caprolactam, the powdery caprolactam that granularity is 300 mesh and the liquid caprolactam for being 5mm including thickness,
Include the following steps successively：
Step 1：It is according to daily production dosage that sheet caprolactam, powdery caprolactam and liquid caprolactam is equal
Even is divided into several batches that feed intake；
Step 2：It will be melted in the batch input fusion boiler that feeds intake of sheet caprolactam, powdery caprolactam in step 1
Melt into liquid caprolactam, the temperature in fusion boiler is 90 DEG C, and nitrogen is passed through in fusion boiler, melting time 2h, and sheet
The mass ratio of caprolactam and powdery caprolactam is 3:2；
Step 3：It will mix in fusion boiler that liquid caprolactam in step 1 is added in step 2, and mixed
The conjunction time is 5h, and the mass ratio that liquid caprolactam is melt into liquid caprolactam and step 2 is 1:2；
Step 4：Assay is carried out to the mixing liquid caprolactam sampling mixed in step 3, analysis numerical value refers to
It is designated as：Potassium permanganate absorption value ＜ 2, volatile base ＜ 0.3,290nm absorbances ＜ 0.03, acidity ＜ 0.05 or basicity ＜ 0.1；
Step 5：Qualified mixed liquor caprolactam is examined to get to caprolactam accumulator tank step 4 kind by dnockout pumps
It is interior to be used continuously for polymerization.
Embodiment three：
The co-melting method of high-speed spinning nylon chips raw material as described in embodiment one, two, the present embodiment have following difference
Place：
Including thickness be 4.5mm sheet caprolactam, the powdery caprolactam that granularity is 280 mesh and liquid in acyl
Amine includes the following steps successively：
Step 1：It is according to daily production dosage that sheet caprolactam, powdery caprolactam and liquid caprolactam is equal
Even is divided into several batches that feed intake；
Step 2：It will be melted in the batch input fusion boiler that feeds intake of sheet caprolactam, powdery caprolactam in step 1
Melt into liquid caprolactam, the temperature in fusion boiler is 85 DEG C, and nitrogen is passed through in fusion boiler, melting time 3h, and sheet
The mass ratio of caprolactam and powdery caprolactam is 3:1；
Step 3：It will mix in fusion boiler that liquid caprolactam in step 1 is added in step 2, and mixed
The conjunction time is 6h, and the mass ratio that liquid caprolactam is melt into liquid caprolactam and step 2 is 3:5；
Step 4：Assay is carried out to the mixing liquid caprolactam sampling mixed in step 3, analysis numerical value refers to
It is designated as：Potassium permanganate absorption value ＜ 2, volatile base ＜ 0.3,290nm absorbances ＜ 0.03, acidity ＜ 0.05 or basicity ＜ 0.1；
Step 5：Qualified mixed liquor caprolactam will be examined to get to caprolactam accumulator tank in step 4 by dnockout pumps
It is interior to be used continuously for polymerization.
As depicted in figs. 1 and 2, co-melting device, including rack 1 and fusion boiler 2, fusion boiler 2 are fixedly connected in rack 1,
It is equipped with blowing cylinder 3 in rack 1 above fusion boiler 2, is equipped with vertical clapboard 4 in blowing cylinder 3, vertical clapboard 4 divides blowing cylinder 3
It is divided into adjustable first cavity, 31 and second cavity 32 of size, sheet caprolactam is arranged in the first cavity 31, and powdery is interior
Amide is arranged in the second cavity 32, and the bottom end of the first cavity 31 and the second cavity 32 is equipped with vomit pipe, and vomit pipe is equipped with
Flow control valve is additionally provided with the wet tank 5 for placing liquid caprolactam, wet tank 5 and 2 phase of fusion boiler in rack 1
Even, the storage tank 6 of storage caprolactam, the connecting pipe of storage tank 6 and fusion boiler 2 are equipped in the rack 1 below fusion boiler 2
Dnockout pumps 61 are provided on 60, wet tank 5 is connected with fusion boiler 2 by conveying pipeline 51, and conveying pipeline 51 is equipped with liquid pump 52,
It is provided with flowmeter 53 in liquid pump 52, can realize and liquid caprolactam is quantitatively adding, practical performance is good, can be according to difference
Product controlled.
Blowing cylinder 3 is fixedly connected on by adjustable for height upright bar 12 in rack 1, and upright bar 12 is equipped with and 3 phase of blowing cylinder
Reinforcing rib 13 even is adjusted to control the discharging of material in blowing cylinder by the height of upright bar, is generated when can prevent material from discharging
It splashes, the setting of reinforcing rib improves the integral strength of blowing cylinder, and rack 1 is equipped with bottom plate 14, and bottom plate 14, which is equipped with, to be fixed
The fixing groove 15 of storage tank 6, bottom plate 14 are equipped with the extension board 16 upwardly extended, and extension board 16 is equipped with and is fixedly connected with pipeline
Mounting hole 17 is placed convenient for storage tank, avoids the overturning of storage tank, and the setting of extension board is convenient for the fixation of connecting pipe, is subtracted
The damage of few connecting pipe, blowing cylinder 3 is interior to be equipped with positioning plate 8, and positioning plate 8 is equipped with the locating slot 81 of fixed vertical clapboard 4,
Positioning plate 8 is fixedly connected on by bolt 82 on blowing cylinder 3, Sign Board on blowing cylinder 3, is convenient for the fixation of vertical clapboard, bolt
Connection is reliable, easy for assemble or unload, adapts to different outputs, practical performance is good, the setting of Sign Board, personnel easy to operation
Observation.
In use, according to the production dosage of step 1, the first cavity 31 and second is adjusted by adjusting vertical clapboard 4
Then the sheet caprolactam that step 1 has been divided is placed in the first cavity 31 by the size of cavity 32, powdery caprolactam is put
It sets in the second cavity 32, liquid caprolactam is placed in wet tank 5, and the blowing of vomit pipe is controlled by flow control valve
Amount, make enter fusion boiler 2 in sheet caprolactam and powdery caprolactam in the mass ratio of setting, fusion boiler 2 is in nitrogen
Protection under carry out melt process, the liquid caprolactam in wet tank 5 is then delivered to by fusion boiler 2 by liquid pump 52
It is interior, and be quantitatively adding by flowmeter 53, so that liquid caprolactam is melt into liquid caprolactam with step 2 and is setting
Mass ratio in, after the completion of the melting of fusion boiler 2, assay is carried out to it, by dnockout pumps 61 by the mixed liquor after qualification
Caprolactam is delivered to storage tank 6 and carries out storage use, is operated successively, so that it may with according to different property regulation sheets
The quality of lactams, powdery caprolactam and liquid caprolactam can reach.
In addition to above preferred embodiment, the present invention also has other embodiments, those skilled in the art can be according to this
Invention makes various changes and modifications, and without departing from the spirit of the present invention, should all belong to appended claims of the present invention and determine
The range of justice.
Claims (10)
1. the co-melting method of high-speed spinning nylon chips raw material, it is characterised in that：Including sheet caprolactam, powdery caprolactam and
Liquid caprolactam, includes the following steps successively：
Step 1：It is according to daily production dosage that sheet caprolactam, powdery caprolactam and liquid caprolactam is uniform
Be divided into several batches that feed intake；
Step 2：It will be melted in the batch input fusion boiler that feeds intake of sheet caprolactam, powdery caprolactam in step 1
At liquid caprolactam, the temperature in fusion boiler is 80~90 DEG C, and nitrogen is passed through in fusion boiler, and the melting time is not less than 2h；
Step 3：By in step 1 liquid caprolactam be added step 2 in fusion boiler in mix, and mix when
Between be not less than 4h；
Step 4：Assay is carried out to the mixing liquid caprolactam sampling mixed in step 3, analyzes numerical indication
For：Potassium permanganate absorption value ＜ 2, volatile base ＜ 0.3,290nm absorbances ＜ 0.03, acidity ＜ 0.05 or basicity ＜ 0.1；
Step 5：Qualified mixed liquor caprolactam will be examined to get in caprolactam accumulator tank in step 4 by dnockout pumps
It is used continuously for polymerization.
2. the co-melting method of high-speed spinning nylon chips raw material according to claim 1, it is characterised in that：It is added in step 2
The mass ratio of sheet caprolactam and powdery caprolactam is 4:1~3:2.
3. the co-melting method of high-speed spinning nylon chips raw material according to claim 1, it is characterised in that：It is added in step 3
The mass ratio that liquid caprolactam is melt into liquid caprolactam and step 2 is 1:2~3:4.
4. the co-melting method of high-speed spinning nylon chips raw material according to claim 1, it is characterised in that：Step 2 and step 3
In liquid caprolactam melted by circulating pump.
5. the co-melting method of high-speed spinning nylon chips raw material according to claim 1, it is characterised in that：Sheet caprolactam
Thickness is 4~5mm, and the grain size of powdery caprolactam is 250~300 mesh.
6. co-melting device used by the co-melting method of high-speed spinning nylon chips raw material as described in claim 1, it is characterised in that：
Including rack (1) and fusion boiler (2), fusion boiler (2) is fixedly connected in rack (1), the rack (1) above fusion boiler (2)
It is equipped with blowing cylinder (3), is equipped with vertical clapboard (4) in blowing cylinder (3), blowing cylinder (3) is separated into size by vertical clapboard (4) can
The first cavity (31) and the second cavity (32) adjusted, the setting of sheet caprolactam is in the first cavity (31), oneself interior acyl of powdery
In the second cavity (32), the bottom end of the first cavity (31) and the second cavity (32) is equipped with vomit pipe for amine setting, in rack (1)
It is additionally provided with the wet tank (5) for placing liquid caprolactam, wet tank (5) is connected with fusion boiler (2), in fusion boiler
(2) rack (1) below is equipped with the storage tank (6) of storage caprolactam, the connecting pipe of storage tank (6) and fusion boiler (2)
(60) dnockout pumps (61) are provided on.
7. co-melting device as claimed in claim 6, it is characterised in that：Wet tank (5) passes through conveying pipeline with fusion boiler (2)
(51) it is connected, conveying pipeline (51) is equipped with liquid pump (52), and flowmeter (53) is provided in liquid pump (52).
8. co-melting device as claimed in claim 6, it is characterised in that：Blowing cylinder (3) is solid by adjustable for height upright bar (12)
Surely it is connected in rack (1), upright bar (12) is equipped with the reinforcing rib (13) being connected with blowing cylinder (3).
9. co-melting device as claimed in claim 6, it is characterised in that：Rack (1) is equipped with bottom plate (14), and bottom plate is set on (14)
There are the fixing groove (15) of stationary storage tanks (6), bottom plate (14) to be equipped with the extension board (16) upwardly extended, extension board is set on (16)
There is the mounting hole (17) for being fixedly connected with pipeline.
10. co-melting device as claimed in claim 6, it is characterised in that：Positioning plate (8), positioning plate are equipped in blowing cylinder (3)
(8) it is equipped with the locating slot (81) of fixed vertical clapboard (4), positioning plate (8) is fixedly connected on blowing cylinder (3) by bolt (82)
On, blowing cylinder is provided with Sign Board on (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077829.0A CN105713195B (en) | 2016-02-03 | 2016-02-03 | The co-melting method of high-speed spinning nylon chips raw material and its co-melting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077829.0A CN105713195B (en) | 2016-02-03 | 2016-02-03 | The co-melting method of high-speed spinning nylon chips raw material and its co-melting device |
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| CN105713195B true CN105713195B (en) | 2018-08-31 |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005187665A (en) * | 2003-12-25 | 2005-07-14 | Toyobo Co Ltd | Polyamide and method for producing the same |
| CN101070298B (en) * | 2006-05-12 | 2012-01-25 | 中国石油化工股份有限公司 | Method for purifying and refining epsi-caprolactam |
| CN102653591B (en) * | 2012-05-23 | 2015-05-13 | 浙江华建尼龙有限公司 | Process for producing caprolactam and nylon 66 salt copolymer slice |
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