CN214765225U - Blending tank of polyamide polymer pilot plant - Google Patents
Blending tank of polyamide polymer pilot plant Download PDFInfo
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- CN214765225U CN214765225U CN202120109130.4U CN202120109130U CN214765225U CN 214765225 U CN214765225 U CN 214765225U CN 202120109130 U CN202120109130 U CN 202120109130U CN 214765225 U CN214765225 U CN 214765225U
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- pipe
- blending tank
- valve
- tank
- blending
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- 238000002156 mixing Methods 0.000 title claims abstract description 71
- 229920000642 polymer Polymers 0.000 title claims abstract description 18
- 239000004952 Polyamide Substances 0.000 title claims abstract description 17
- 229920002647 polyamide Polymers 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 45
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 48
- 238000007664 blowing Methods 0.000 claims description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 239000003607 modifier Substances 0.000 abstract description 20
- 238000011020 pilot scale process Methods 0.000 abstract description 11
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 abstract 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 39
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 16
- 229910001873 dinitrogen Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 239000000654 additive Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000000996 additive effect Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000011021 bench scale process Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The utility model discloses a blending tank of a polyamide polymer pilot plant in the technical field of pilot plant blending tanks, which comprises a blending tank, wherein the blending tank is a sealed tank body, a tank body flange is fixedly arranged at the top seal of the blending tank, and a discharging pipe is connected at the bottom of the blending tank; the inlet pipe, one end and external former feed pipe sealing connection, the other end and jar body flange seal butt joint, be equipped with feed valve and restricted valve on it in proper order, the restricted valve is close to external former feed pipe setting, can effectually blow away phthalic acid and the modifier of adhesion on the pipe wall of inlet pipe, so just can increase the material ratio precision in the allotment jar, thereby improve the precision of pilot scale, this device has still increased transparent inlet pipe simultaneously, whether can understand see that whether there is the material by the adhesion on the pipe wall, carry out the pertinence and blow the material, can ensure that the addition material all adds in the allotment jar, it is surveyable to the entering condition of raw materials.
Description
Technical Field
The utility model relates to a pilot scale device allotment jar technical field especially relates to a allotment jar of polyamide fibre polymer pilot scale device.
Background
The pilot device is used for researching and developing the operation of the process or carrying out basic research to show the feasibility of the process and determine the safety amplification factor and the basic normality of the process or process design, thereby reducing and avoiding the risk of developing the process. The pilot plant scale can range from laboratory benches to plants approaching industrial production scale; the bench scale is at the laboratory level, the pilot scale is at the experimental level where commissioning can take place, and if necessary, normal production processes can be entered directly.
The polyamide polymer is prepared by pilot plant test, and can be produced in a pilot plant test mode and finally produced in a quantitative mode. The blending of the prior polyamide polymer raw material needs to add liquid caprolactam, pure water, terephthalic acid (PTA) and a modifier, and the blending sequence cannot be wrong, because the terephthalic acid and the modifier are powdery substances insoluble in water, the liquid caprolactam and the pure water need to be blended firstly, and then the terephthalic acid (PTA) and the modifier are added, so that the polymer can be generated by stirring and dissolving.
However, in the blending process, the existing blending tank has a micro-positive pressure pipeline for exhausting air to avoid the contact oxidation of raw materials and air, the raw materials are pushed and conveyed only by the mutual extrusion of a feeding pipe and materials, the water temperature of the blending tank is high, partial gas-phase water vapor is generated and condensed into water when meeting cold in the feeding pipe and attached to the pipe wall, so that some Particles of Terephthalic Acid (PTA) and a modifier are easily adhered, the problems in the original production are not great, the raw material consumption is very large because of the original production, the adhered few particles can be ignored, in a pilot plant, the raw materials for the production test are less, the consumption of the catalyst and the modifier is less, and the experimental results are completely different as long as some terephthalic acid (PTA) and the modifier are adhered to the pipe wall, relatively small amounts of terephthalic acid (PTA) and modifier added can result in large experimental variation, the final assay data can cause large process errors, and the addition of terephthalic acid to the tube wall can result in tube plugging if the feed rate is too high.
Based on this, the utility model designs a polyamide fibre polymer pilot scale device's allotment jar to solve above-mentioned problem.
Disclosure of Invention
An object of the utility model is to provide a polyamide fibre polymer pilot scale device's allotment jar, can effectually blow away phthalic acid and the modifier of adhesion on the pipe wall of inlet pipe, so just can increase the material ratio precision in the allotment jar, thereby improve the precision of pilot scale, this device has still increased transparent inlet pipe simultaneously, whether can understand see that whether there is the material by the adhesion on the pipe wall, carry out the pertinence and blow the material, can ensure that the addition material all adds the allotment jar in, the condition of getting into to the raw materials is surveyable.
The utility model discloses a realize like this: a dispensing tank for a polyamide polymer pilot plant, comprising:
the blending tank is a sealed tank body, the top of the blending tank is fixedly provided with a tank body flange in a sealing way, and the bottom of the blending tank is connected with a discharge pipe;
one end of the feeding pipe is hermetically connected with the external raw material pipe, the other end of the feeding pipe is hermetically butted with the flange of the tank body, a feeding valve and a limiting valve are sequentially arranged on the feeding pipe, and the limiting valve is arranged close to the external raw material pipe;
a material blowing pipe is connected between the feed valve and the limiting valve through a material blowing valve, the material blowing pipe is connected with an external pressurized nitrogen pipeline, and the pressure of the nitrogen externally connected with the material blowing pipe is greater than the internal pressure of the blending tank;
the pressure pipe is connected between the micro-pressure nitrogen pipeline and the blending tank, a pressure valve is arranged on the pressure pipe, and the pressure pipe is communicated with the blowing pipe through a pressure valve.
Furthermore, the pressure pipe is internally connected with a nitrogen external pipeline with the pressure of 0.5 MPA.
Further, the external nitrogen pressure of blowing pipe is 3 MPA.
Furthermore, the blending tank is also connected with a liquid seal tank.
Further, the feed pipe is transparent silicone tube.
Furthermore, the shell pass isolated outside the blending tank is communicated with a water vapor pipeline at 85 ℃.
The utility model has the advantages that: 1. the utility model changes the transparent silica gel pipeline as the feeding pipe, can conveniently observe the condition of material entering in the feeding pipe, can accurately see whether the terephthalic acid and the modifier enter the blending tank, and can more accurately judge the accuracy of blending;
2. a blowing pipe and a limiting valve are added, so that the residual terephthalic acid and the modifier attached to the wall of the feeding pipe can be blown by nitrogen with higher pressure, the powdery additive can be ensured to completely enter a blending tank, and the accuracy of a pilot test is ensured;
3. this device still will blow the material pipe and pass through the pressure material valve with the pressurization pipe and be connected, can directly blow in the allotment jar through the pressurization pipe through the nitrogen gas of great pressure, can with the powder material that drifts in the allotment jar impress in the caprolactam of liquid and the solution of water to the pilot scale precision of further increase allotment.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-feeding pipe, 11-feeding valve, 12-limiting valve, 2-blowing pipe, 21-blowing valve, 3-blending tank, 31-tank body flange, 32-discharging pipe, 4-external raw material pipe, 5-pressurizing pipe, 51-pressurizing valve and 52-pressurizing valve.
Detailed Description
Referring to fig. 1, the present invention provides a technical solution: a dispensing tank for a polyamide polymer pilot plant, comprising:
the blending tank 3 is a sealed tank body, the top of the blending tank is fixedly provided with a tank body flange 31 in a sealing way, and the bottom of the blending tank is connected with a discharge pipe 32;
one end of the feeding pipe 1 is hermetically connected with the external raw material pipe 4, the other end of the feeding pipe is hermetically butted with the tank body flange 31, a feeding valve 11 and a limiting valve 12 are sequentially arranged on the feeding pipe, and the limiting valve 12 is arranged close to the external raw material pipe 4;
a blowing pipe 2 is connected between the feed valve 11 and the limiting valve 12 through a blowing valve 21, the blowing pipe 2 is connected with an external pressurized nitrogen pipeline, and the pressure of the nitrogen externally connected with the blowing pipe 2 is greater than the internal pressure of the blending tank 3;
the forcing pipe 5 is connected between minute-pressure nitrogen gas pipeline and allotment jar 3, is equipped with the pressure valve 51 on it, the forcing pipe 5 with blow through pressure material valve 52 intercommunication between the material pipe 2, can effectually blow away phthalic acid and the modifier of adhesion on the pipe wall of inlet pipe 1, so just can increase the material ratio precision in the allotment jar 3, thereby improve the precision of pilot scale, transparent inlet pipe 1 has still been increased to this device simultaneously, whether can clearly see that whether there is the material by the adhesion on the pipe wall, carry out the pertinence and blow the material, can ensure that the addition material all adds in the allotment jar 3, it is surveyable to the entering condition of raw materials.
Wherein, the pressure pipe 5 is internally connected with a nitrogen external pipeline with the pressure of 0.5MPA and is used for pressurizing the blending tank 3 for a long time, so as to prevent external air from entering the blending tank 3 and prevent blended materials from being oxidized;
the external nitrogen pressure of the blowing pipe 2 is 3MPA, and the nitrogen with larger pressure thoroughly blows the adhered materials in the feeding pipe 1 into the blending tank 3;
the blending tank 3 is also connected with a liquid seal tank, so that the pressure in the blending tank 3 can be prevented from being overlarge, external air can not enter the blending tank 3, and the experimental accuracy is prevented from being influenced;
the feeding pipe 1 is a transparent silicone tube, so that the condition of raw materials adhered in the feeding pipe 1 can be conveniently observed, and whether blowing operation is needed or not can be accurately judged;
the shell pass isolated outside the blending tank 3 is communicated with a water vapor pipeline at 85 ℃, so that the solution in the blending tank 3 is ensured not to be cooled and condensed, and is convenient for stirring and blending.
In a specific embodiment of the present invention:
the embodiment of the utility model provides a through providing allotment jar of polyamide fibre polymer pilot scale device, the utility model provides a technical problem be: 1. in the pilot plant, because the corona and the additive are less, if the batching is reduced by a little bit, the raw material proportion error is larger, so if some PTA and modifier are adhered to the pipe wall of the feeding pipe 1, the experimental error precision is not high, and the existing blending tank can not know the accurate internal information at all for whether the raw material is adhered to the feeding pipe 1 or not at present; 2. the added terephthalic acid can also adhere to the pipe wall, and if the feeding speed is too high, the terephthalic acid can be blocked in the feeding pipe 1, so that the pipe can be blocked; 3. the PTA and the modifier are fine powder or flake and are easy to float at the top pore of the blending tank 3, especially the evaporation of water vapor can cause the situation to happen, so that the mixing is not uniform and the dosage deviation of the material addition occurs;
the realized technical effects are as follows: 1. the utility model changes the transparent silica gel pipeline as the feeding pipe, can conveniently observe the condition of material entering in the feeding pipe, can accurately see whether the terephthalic acid and the modifier enter the blending tank, and can more accurately judge the accuracy of blending;
2. a blowing pipe and a limiting valve are added, so that the residual terephthalic acid and the modifier attached to the wall of the feeding pipe can be blown by nitrogen with higher pressure, the powdery additive can be ensured to completely enter a blending tank, and the accuracy of a pilot test is ensured;
3. this device still will blow the material pipe and pass through the pressure material valve with the pressurization pipe and be connected, can directly blow in the allotment jar through the pressurization pipe through the nitrogen gas of great pressure, can with the powder material that drifts in the allotment jar impress in the caprolactam of liquid and the solution of water to the pilot scale precision of further increase allotment.
The embodiment of the utility model provides an in technical scheme for solving above-mentioned problem, the general thinking is as follows:
for better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
The utility model discloses when the preparation installation, at first change inlet pipe 1 into transparent silicone tube or transparent PVC pipe in the body flange 31 department at the top of original allotment jar 3 for the material adhesion condition in inlet pipe 1, can follow the clear observation of outside, then increase a restriction valve 12 at the feed inlet of inlet pipe 1 top, the bottom export increases a feed valve 11, and the pipeline part between feed valve 11 and restriction valve 12 on inlet pipe 1 connects one and blows material pipe 2, blow material pipe 2 still with external pressurization nitrogen pipeline connection, pressure is 3MPA nitrogen gas, and the best temperature is 85 ℃ nitrogen gas, blow material pipe 2 and have still set up blow material valve 21, blow material valve 21 is connected and is being close to inlet pipe 1;
the preparation tank 3 is connected with a pressure pipe 5, the pressure pipe 5 is connected with micro-pressure nitrogen through a pressure valve 51, the pressure is 0.5MPA, the temperature is 85 ℃, and the pressure pipe is used for increasing positive pressure for the preparation tank 3 for a long time to ensure that external air cannot enter the preparation tank 3; the pressurizing pipe 5 is communicated with the blowing pipe 2 through the pressurizing valve 52, and the pressurizing valve 52 and the blowing valve 21 are in a normally closed state, while the pressurizing valve 51 is in a normally open state.
The nitrogen gas with the temperature of 85 ℃ is used for avoiding precooling and coagulation of caprolactam and ensuring that the prepared raw materials are in a liquid state.
The utility model discloses when using, when needing to add the blending material, open the ooff valve 51 earlier, press the ooff valve 52 and blow the material valve 21 and be in normally closed state, ensure to be in 0.5 MPA's malleation in the blending jar 3, and the inside is full of 85 ℃ nitrogen gas, and the outside of blending jar 3 is heated to 85 ℃ through vapor, then open feed valve 11 and restricted movement valve 12, pour into the blending jar 3 with accurate liquid caprolactam of measurement and ratio and pure water, then stir, ensure caprolactam and pure water misce bene, then add terephthalic acid PTA and modifier again, close feed valve 11 and restricted movement valve 12 after the reinforced completion;
the PTA and the modifier are in powder or flake shapes and are easy to adhere to the pipe wall of the feeding pipe 1, the consumption of liquid caprolactam and pure water is large, if the consumption of the PTA and the modifier is small, if the PTA and the modifier are slightly adhered, pilot test experimental data are wrong, and blending results are invalid, at the moment, the device can check whether more ingredients are adhered to the pipe wall through the transparent feeding pipe 1, if the ingredients are adhered to the pipe wall, when the additives of the feeding pipe 1 need to be blown into the blending tank 3, the limiting valve 12 is closed, the feeding valve 11 is opened, the pressurizing valve 51 is opened, the pressure valve 52 is closed, the blowing valve 21 is opened, nitrogen with higher pressure 3MPA flows into the feeding pipe 1 through the blowing pipe 2, then enters the blending tank 3 through the feeding valve 11, blowing is finished, and due to the high pressure, the adhered materials have lighter mass and can be easily blown into the blending tank 3 completely, then closing the feeding valve 11 and the blowing valve 21;
when blowing, the powder additive is blown into the blending tank 3 from the top of the blending tank 3, a recoil force exists, the powder can be suspended in the blending tank 3, at the moment, the feeding valve 11, the limiting valve 12, the pressurizing valve 51 and the blowing valve 21 are closed, the material pressing valve 52 is opened, the 3MPA nitrogen gas with higher pressure enters the blending tank 3 through the pressurizing pipe 5 and is blown in from the side, and the pressurization is continued, the air flow is quickly lost due to pressure change, only the top can be continuously pressurized, the pressure is increased, the powdery substance can be pressed to the mixed solution in the blending tank 3, the blending tank 3 can be continuously stirred, the loss of the additive is reduced, the blending precision of a pilot test is improved, and the accuracy of experimental data is improved.
Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.
Claims (6)
1. A blending tank of a polyamide polymer pilot plant is characterized by comprising:
the blending tank (3) is a sealed tank body, the top of the blending tank is fixedly provided with a tank body flange (31) in a sealing way, and the bottom of the blending tank is connected with a discharge pipe (32);
one end of the feeding pipe (1) is hermetically connected with the external raw material pipe (4), the other end of the feeding pipe is hermetically butted with the tank body flange (31), a feeding valve (11) and a limiting valve (12) are sequentially arranged on the feeding pipe, and the limiting valve (12) is arranged close to the external raw material pipe (4);
the feeding valve (11) and the limiting valve (12) are also connected with a material blowing pipe (2) through a material blowing valve (21), the material blowing pipe (2) is connected with an external pressurized nitrogen pipeline, and the pressure of the external nitrogen of the material blowing pipe (2) is greater than the internal pressure of the blending tank (3);
the pressurization pipe (5) is connected between the micro-pressure nitrogen pipeline and the blending tank (3), a pressurization valve (51) is arranged on the pressurization pipe, and the pressurization pipe (5) is communicated with the blowing pipe (2) through a material pressing valve (52).
2. The blending tank of polyamide polymer pilot plant of claim 1, characterized in that: and a nitrogen external pipeline with the pressure of 0.5MPA is connected in the pressurizing pipe (5).
3. The blending tank of polyamide polymer pilot plant of claim 2, characterized in that: the external nitrogen pressure of the blowing pipe (2) is 3 MPA.
4. The blending tank of polyamide polymer pilot plant of claim 1, characterized in that: the blending tank (3) is also connected with the liquid seal tank.
5. The blending tank of polyamide polymer pilot plant of claim 1, characterized in that: the feeding pipe (1) is a transparent silicone tube.
6. The blending tank of polyamide polymer pilot plant of claim 1, characterized in that: the shell pass isolated outside the blending tank (3) is communicated with a water vapor pipeline at 85 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120109130.4U CN214765225U (en) | 2021-01-15 | 2021-01-15 | Blending tank of polyamide polymer pilot plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120109130.4U CN214765225U (en) | 2021-01-15 | 2021-01-15 | Blending tank of polyamide polymer pilot plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214765225U true CN214765225U (en) | 2021-11-19 |
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ID=78747416
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120109130.4U Active CN214765225U (en) | 2021-01-15 | 2021-01-15 | Blending tank of polyamide polymer pilot plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214765225U (en) |
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2021
- 2021-01-15 CN CN202120109130.4U patent/CN214765225U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 301 Houcuo, Zhangliu Village, Jiangtian, Changle District, Fuzhou, 350200, Fujian Province Patentee after: Fujian Liheng Nylon Industry Co.,Ltd. Country or region after: China Address before: 350218 Binhai Industrial Zone, Changle City, Fuzhou City, Fujian Province Patentee before: CHANGLE LIHENG POLYAMIDE TECHNOLOGY Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |