阅读说明：本技术 一种黑色锦纶6切片生产装置及生产方法 (Black chinlon 6 slice production device and production method ) 是由 陈建新 吉增明 封其都 陈亮 严栋 于 2019-10-14 设计创作，主要内容包括：本发明公开了一种黑色锦纶6切片生产装置及生产方法,包括：原料储罐、精对苯二甲酸配制罐、改性剂配制罐、黑颜料和颜料分散剂配制罐、静态混合器、动态混合器、前加压聚合器、后聚合反应器、铸带头、水下切粒机、振动筛、预萃取水罐、萃取塔、干燥塔、冷切片料仓、成品仓；本发明通过将混合液在高温下进行原位聚合,首先经过前加压聚合器进行水解开环和初步加聚反应,前加压聚合器顶部的搅拌器对其进行搅拌,生成的初期聚合物输送到后聚合反应器中进行加聚和链平衡反应,生成锦纶6聚合物熔体,其采用原位聚合方法制得的黑色锦纶6切片,提高了产物的分子量,黑色锦纶6切片的粘度为2.0~2.8,所纺出来的丝颜色均匀,无色差。(The invention discloses a black chinlon 6 slice production device and a production method, which comprise the following steps: a raw material storage tank, a purified terephthalic acid preparation tank, a modifier preparation tank, a black pigment and pigment dispersant preparation tank, a static mixer, a dynamic mixer, a front pressure polymerizer, a rear polymerization reactor, a casting belt head, an underwater granulator, a vibrating screen, a pre-extraction water tank, an extraction tower, a drying tower, a cold slicing bin and a finished product bin; according to the invention, the mixed solution is subjected to in-situ polymerization at high temperature, firstly, hydrolysis ring opening and preliminary addition polymerization are carried out through a front pressure polymerizer, the mixed solution is stirred by a stirrer at the top of the front pressure polymerizer, the generated initial polymer is conveyed to a rear polymerization reactor to carry out addition polymerization and chain balancing reaction, a nylon 6 polymer melt is generated, the black nylon 6 slice prepared by the in-situ polymerization method is adopted, the molecular weight of the product is improved, the viscosity of the black nylon 6 slice is 2.0-2.8, and the spun yarn is uniform in color and free of color difference.)

1. The utility model provides a 6 section apparatus for producing of black polyamide fibre, includes: a raw material storage tank, a purified terephthalic acid preparation tank, a modifier preparation tank, a black pigment and pigment dispersant preparation tank, a static mixer, a dynamic mixer, a front pressure polymerizer, a rear polymerization reactor, a casting belt head, an underwater granulator, a vibrating screen, a pre-extraction water tank, an extraction tower, a drying tower, a cold slicing bin and a finished product bin; the method is characterized in that: raw materials storage tank connect gradually static mixer, dynamic mixer, preceding pressurization polymerization ware, postpolymerization ware, cast tape head, pelleter under water, shale shaker, pre-extraction water pitcher, extraction tower, drying tower, cold section feed bin, finished product storehouse, refined terephthalic acid prepare jar, modifier and black pigment and pigment dispersant prepare jar and be connected with static mixer respectively, drying tower top be equipped with the hydroextractor.

2. The black nylon 6 chip production device of claim 1, wherein: the raw material storage tank 1 stores caprolactam liquid.

3. The black nylon 6 chip production device of claim 1, wherein: the black pigment and pigment dispersant preparation tank is provided with a dispersing sand mill.

4. The black nylon 6 chip production device of claim 1, wherein: the top of the front pressure polymerizer is provided with a stirrer.

5. The black nylon 6 chip production device of claim 1, wherein: the temperature of the front pressure polymerizer is 260-280 ℃, and the pressure is 0.1-1.2 Mpa.

6. The black nylon 6 chip production device of claim 1, wherein: the temperature of the post-polymerization reactor is 260-280 ℃ at the upper section and 235-250 ℃ at the lower section.

7. A production method of black chinlon 6 slices is characterized by comprising the following steps: the method comprises the following steps:

1) firstly, dispersing and grinding the black pigment and the pigment dispersant in a black pigment and pigment dispersant preparation tank by a dispersing sand mill, then putting the caprolactam liquid in a raw material storage tank, the purified terephthalic acid, the modifier, the black pigment and the pigment dispersant into a static mixer for primary mixing, and finally, putting into a dynamic mixer to obtain a mixed solution;

2) carrying out in-situ polymerization on the mixed solution, firstly carrying out hydrolytic ring opening and primary addition polymerization reaction by a front pressure polymerizer, stirring the mixed solution by a stirrer at the top of the front pressure polymerizer to prevent black pigment from generating agglomeration reaction, and conveying the generated initial polymer into a rear polymerization reactor to carry out addition polymerization and chain balance reaction to generate a polyamide-6 polymer melt;

3) carrying out belt casting, underwater grain cutting and sieving on the nylon 6 polymer melt to obtain initial nylon 6 slices;

4) putting the initial chinlon 6 slices into a pre-extraction water tank, performing pre-extraction treatment by using water, putting the treated initial chinlon 6 slices and pre-extraction water into an extraction tower for extraction, and extracting the initial chinlon 6 slices containing monomers and oligomers in the extraction tower by using extraction water in countercurrent contact with the initial chinlon 6 slices to obtain extracted chinlon 6 slices;

5) and (3) placing the extracted chinlon 6 slices into a dehydrator for dehydration treatment, then circularly drying in a drying tower by using nitrogen to obtain black chinlon 6 dry slices, cooling in a cold-cutting slice bin, and storing in a finished product bin.

8. The production method of the black chinlon 6 slice as claimed in claim 7, wherein the production method comprises the following steps: in the mixed solution, caprolactam: 100 parts of (A); water: 3-10 parts; purified terephthalic acid: 0.05-0.5 part; modifying agent: 0.1-0.2 parts; black pigment: 1-30 parts; pigment dispersing agent: 0.2-6 parts.

9. The production method of the black chinlon 6 slice as claimed in claim 7, wherein the production method comprises the following steps: the molecular weight of the initial polymer is 8800-10000, and the molecular weight of the polyamide-6 polymer melt is 9800-15100.

10. The production method of the black chinlon 6 slice as claimed in claim 7, wherein the production method comprises the following steps: the particle size of the black pigment is 100-300 nanometers, and the viscosity of the dry black chinlon 6 slices is 2.0-2.8.

Technical Field

The invention relates to the technical field of chinlon, in particular to a black chinlon 6 slice production device and a production method.

Background

At present, black chips manufactured at home and abroad are mainly obtained by blending bright chips and black master batches and then spinning. Or spinning with bright section and dyeing in the next process. The problems and disadvantages of this manufacturing method are as follows:

the black master batch has larger carbon black particle size which is generally above micron level, and in the spinning process, the service cycle of a spinning component is shorter (generally 7-20 days), so that the spinning cost is increased. The particle size of the carbon black greatly affects the spinnability, and the carbon black is easy to float and break.

Because the bright chips and the black master batch are blended, the mixing is uneven, and the spun silk has color difference.

The bright section is used for spinning, the subsequent process needs to be dyed again, and the dyeing process can bring the problem of environmental pollution.

Disclosure of Invention

The invention aims to provide a black chinlon 6 slice production device and a production method, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a 6 section apparatus for producing of black polyamide fibre, includes: a raw material storage tank, a purified terephthalic acid preparation tank, a modifier preparation tank, a black pigment and pigment dispersant preparation tank, a static mixer, a dynamic mixer, a front pressure polymerizer, a rear polymerization reactor, a casting belt head, an underwater granulator, a vibrating screen, a pre-extraction water tank, an extraction tower, a drying tower, a cold slicing bin and a finished product bin; the method is characterized in that: raw materials storage tank connect gradually static mixer, dynamic mixer, preceding pressurization polymerization ware, postpolymerization ware, cast tape head, pelleter under water, shale shaker, pre-extraction water pitcher, extraction tower, drying tower, cold section feed bin, finished product storehouse, refined terephthalic acid prepare jar, modifier and black pigment and pigment dispersant prepare jar and be connected with static mixer respectively, drying tower top be equipped with the hydroextractor.

Wherein the raw material storage tank 1 stores a caprolactam liquid.

Wherein, the black pigment and pigment dispersant preparation tank is provided with a dispersing sand mill for dispersing and grinding the black pigment and the pigment dispersant, so that the particles of the black pigment and the pigment are smaller and are more fully mixed with caprolactam.

Wherein, the top of the front pressure polymerizer is provided with a stirrer for preventing the black pigment from generating agglomeration reaction.

Wherein the temperature of the front pressure polymerizer is 260-280 ℃, the pressure is 0.1-1.2 Mpa, and the hydrolytic ring opening and the preliminary addition polymerization are carried out under the high-temperature condition.

Wherein the temperature of the post-polymerization reactor is 260-280 ℃ at the upper section and 235-250 ℃ at the lower section, and the polyaddition and chain equilibrium reaction are continued under the high-temperature condition.

The invention also provides a production method of the black chinlon 6 slices, which comprises the following steps:

1) firstly, dispersing and grinding the black pigment and the pigment dispersant in a black pigment and pigment dispersant preparation tank by a dispersing sand mill, then putting the caprolactam liquid in a raw material storage tank, the purified terephthalic acid, the modifier, the black pigment and the pigment dispersant into a static mixer for primary mixing, and finally, putting into a dynamic mixer to obtain a mixed solution;

2) carrying out in-situ polymerization on the mixed solution, firstly carrying out hydrolytic ring opening and primary addition polymerization reaction by a front pressure polymerizer, stirring the mixed solution by a stirrer at the top of the front pressure polymerizer to prevent black pigment from generating agglomeration reaction, and conveying the generated initial polymer into a rear polymerization reactor to carry out addition polymerization and chain balance reaction to generate a polyamide-6 polymer melt;

3) carrying out belt casting, underwater grain cutting and sieving on the nylon 6 polymer melt to obtain initial nylon 6 slices;

4) putting the initial chinlon 6 slices into a pre-extraction water tank, performing pre-extraction treatment by using water, putting the treated initial chinlon 6 slices and pre-extraction water into an extraction tower for extraction, and extracting the initial chinlon 6 slices containing monomers and oligomers in the extraction tower by using extraction water in countercurrent contact with the initial chinlon 6 slices to obtain extracted chinlon 6 slices;

5) and (3) placing the extracted chinlon 6 slices into a dehydrator for dehydration treatment, then circularly drying in a drying tower by using nitrogen to obtain black chinlon 6 dry slices, cooling in a cold-cutting slice bin, and storing in a finished product bin.

Wherein, in the mixed solution, the weight ratio of caprolactam: 100 parts of (A); water: 3-10 parts; purified terephthalic acid: 0.05-0.5 part; modifying agent: 0.1-0.2 parts; black pigment: 1-30 parts; pigment dispersing agent: 0.2-6 parts.

Wherein the molecular weight of the initial polymer is 8800-10000, and the molecular weight of the polyamide-6 polymer melt is 9800-15100.

Wherein the granularity of the black pigment is 100-300 nanometers, and the viscosity of the dry slice of the black chinlon 6 is 2.0-2.8.

Compared with the prior art, the invention has the beneficial effects that:

1. the method comprises the steps of carrying out in-situ polymerization on mixed liquor at a high temperature, firstly carrying out hydrolysis ring opening and preliminary addition polymerization reaction by a front pressure polymerizer, stirring the mixed liquor by a stirrer at the top of the front pressure polymerizer, and conveying a generated initial polymer into a rear polymerizer for addition polymerization and chain balance reaction to generate a nylon 6 polymer melt, wherein the molecular weight of the initial polymer is 8800-10000, and the molecular weight of the nylon 6 polymer melt is 9800-15100.

2. According to the invention, highly ground and dispersed black pigment is used for replacing black master batch, the particle size of the black pigment is controlled to be 100-300 nanometers, so that the service cycle of a spinning assembly is prolonged, and the black pigment can be generally used for 3-6 months, thereby greatly reducing the production cost of spinning, and the dispersant is adopted to prevent the black pigment from re-agglomerating, improve the in-situ polymerization effect, and improve the spinnability of the black nylon-6 chip.

3. The black chinlon 6 slice is prepared by adopting an in-situ polymerization method, so that the problems of spinning by using bright slices and dyeing in the subsequent process are solved, and the product is not dyed any more, so that the pollution problem caused by dyeing is solved, and the product is more environment-friendly and safe.

Drawings

FIG. 1 is a schematic view of a black chinlon 6 slice production device and a production method thereof;

in the figure: 1-a raw material storage tank; 2-purified terephthalic acid preparation tank; 3-a modifier preparation tank; 4-a black pigment and pigment dispersant preparation tank; 5-a static mixer; 6-a dynamic mixer; 7-a pre-pressurized polymerizer; 8-a postpolymerization reactor; 9-casting a belt head; 10-underwater pelletizer; 11-a vibrating screen; 12-a pre-extraction water tank; 13-an extraction column; 14-a drying tower; 15-cold slice storage bin; 16 finished product warehouse.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a device for producing black chinlon 6 chips, comprising: a raw material storage tank 1, a purified terephthalic acid preparation tank 2, a modifier preparation tank 3, a black pigment and pigment dispersant preparation tank 4, a static mixer 5, a dynamic mixer 6, a front pressurizing polymerizer 7, a rear polymerizer 8, a casting belt head 9, an underwater granulator 10, a vibrating screen 11, a pre-extraction water tank 12, an extraction tower 13, a drying tower 14, a cold-cutting tablet bin 15 and a finished product bin 16; the method is characterized in that: raw materials storage tank 1 connect gradually static mixer 5, dynamic mixer 6, preceding pressurization polymerization ware 7, postpolymerization reactor 8, casting tape head 9, underwater pelleter 10, shale shaker 11, pre-extraction water pitcher 12, extraction tower 13, drying tower 14, cold cutting sheet stock storehouse 15, finished product storehouse 16, refined terephthalic acid prepare jar 2, modifier and prepare jar 3 and black pigment and pigment dispersant and prepare jar 4 and be connected with static mixer 5 respectively, 14 tops of drying tower be equipped with the hydroextractor.

Wherein the raw material storage tank 1 stores a caprolactam liquid.

Wherein, the black pigment and pigment dispersant preparation tank 4 is provided with a dispersing sand mill.

Wherein, the top of the front pressure polymerizer 7 is provided with a stirrer.

Wherein the temperature of the front pressure polymerizer 7 is 260-280 ℃, and the pressure is 0.1-1.2 Mpa.

Wherein the temperature of the post-polymerization reactor 8 is 260-280 ℃ at the upper section and 235-250 ℃ at the lower section.

The working principle is as follows: the invention also provides a production method of the black chinlon 6 slices, which comprises the following steps:

1) firstly, dispersing and grinding the black pigment and the pigment dispersant in a black pigment and pigment dispersant preparation tank 4 by a dispersing sand mill, then driving the caprolactam liquid in a raw material storage tank 1, the purified terephthalic acid solution in a purified terephthalic acid preparation tank 2, the modifier in a modifier preparation tank 3, the black pigment and the pigment dispersant in the black pigment and pigment dispersant preparation tank 4 and the pigment dispersant into a static mixer 5 for primary mixing, and finally driving into a dynamic mixer 6 to obtain a mixed solution;

2) carrying out in-situ polymerization on the mixed solution, firstly carrying out hydrolytic ring opening and preliminary polyaddition reaction by a front pressure polymerizer 7, stirring the mixed solution by a stirrer at the top of the front pressure polymerizer 7 to prevent black pigment from generating agglomeration reaction, and conveying the generated initial polymer into a rear polymerizer 8 to carry out polyaddition and chain balance reaction to generate a polyamide-6 polymer melt;

3) casting the polyamide-6 polymer melt by a casting belt head 9, granulating by an underwater granulator 10, and sieving by a vibrating screen 11 to obtain initial polyamide-6 slices;

4) putting the initial chinlon 6 slices into a pre-extraction water tank 12, performing pre-extraction treatment by using water, putting the treated initial chinlon 6 slices and pre-extraction water into an extraction tower 13 for extraction, and extracting the initial chinlon 6 slices containing monomers and oligomers in the extraction tower 13 by using extraction water in countercurrent contact with the initial chinlon 6 slices to obtain extracted chinlon 6 slices;

5) the extracted chinlon 6 slices are put into a dehydrator for dehydration treatment, then are circularly dried in a drying tower 14 by using nitrogen to obtain black chinlon 6 dry slices, and are stored in a finished product bin 16 after being cooled in a cold-cutting sheet bin 15.

Wherein, in the mixed solution, the weight ratio of caprolactam: 100 parts of (A); water: 3-10 parts; purified terephthalic acid: 0.05-0.5 part; modifying agent: 0.1-0.2 parts; black pigment: 1-30 parts; pigment dispersing agent: 0.2-6 parts.

Wherein the molecular weight of the initial polymer is 8800-10000, and the molecular weight of the polyamide-6 polymer melt is 9800-15100.

Wherein the granularity of the black pigment is 100-300 nanometers, and the viscosity of the dry slice of the black chinlon 6 is 2.0-2.8.