CN203768272U - Recovery cracker for production of chinlon 6 slice - Google Patents
Recovery cracker for production of chinlon 6 slice Download PDFInfo
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- CN203768272U CN203768272U CN201420104927.5U CN201420104927U CN203768272U CN 203768272 U CN203768272 U CN 203768272U CN 201420104927 U CN201420104927 U CN 201420104927U CN 203768272 U CN203768272 U CN 203768272U
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- cracker
- pipe
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- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The utility model discloses a recovery cracker for production of a chinlon 6 slice. The cracker comprises a cracker body which is provided with a feeding pipe. The cracker is characterized by further comprising a caprolactam storage tank which is connected with the feeding pipe through a liquid supplementing pipe provided with a liquid supplementing valve and a liquid supplementing pump, and the feeding pipe is provided with a flowmeter. The recovery cracker disclosed by the utility model has the beneficial effects that the flow of the concentrated solution conveyed from the filter to the feeding pipe declines when the liquid level at the output opening of a three-effect evaporator is not stable or a concentrated solution tank filter is blocked due to other reasons; the flowmeter can reflect the problem, the liquid supplementing valve and the liquid supplementing pump can be manually or automatically opened and caprolactam stored in the caprolactam storage tank can be supplemented to the feeding pipe to ensure the stable flow so as to effectively ensure stable liquid level in the cracker. Therefore, the cracker can normally work and the quality stability of the product is ensured after the cracked concentrated solution enters into a polymerization pipe to react.
Description
Technical field
The utility model relates to a kind of cracker, especially a kind of recovery cracker of chinlon 6 section production use.
Background technology
Polyamide 6 section, is commonly called as chinlon 6 section, nylon 6 slice, is the important raw and processed materials of producing polyamide fibre 6.In the production process of chinlon 6 section, there is the process of a underwater cutpellet, in pelletizing process, in extraction water, water content has the hexanolactam of 15% left and right, can purify to 78%-85% through concentrating unit, so the hexanolactam in extraction water can be used as the raw materials for production use of chinlon 6 section again.
Existing extraction water hexanolactam recovery system comprises carries out concentrated triple-effect evaporator to extraction water, the concentrated flow container and the cracker that are connected with the outlet of triple-effect evaporator, described concentrated flow container peripheral hardware has heating jacket and self-circulation pipeline, and the outlet of this concentrated flow container is connected with two strainers by switching valve, described strainer connects the import of described cracker by transport pipe, in process of production, thereby the phenomenon that strainer easily occurs to stop up affects output flow, the time that switching need to be longer between two strainers in addition, such as: when in triple-effect evaporator, certain valve or pump produce fault, the output concentration of triple-effect evaporator is just unstable, in concentrated flow container, when being less than 120 ℃, feed temperature will produce crystalline polamer, and will produce polymerism during higher than 125 ℃, these all easily cause the obstruction of strainer, and the output concentration shakiness of triple-effect evaporator produces larger fluctuation by the water content that causes feed liquid in concentrated flow container, in self-circulation heat-processed, also can produce temperature fluctuation, thereby produce crystallization or polymerism.When strainer fault or while switching, the liquid level of cracker ingress will produce even cutout of fluctuation, cause after cracking concentrated solution to enter product quality shakiness after polymerizing pipe reaction, and the while also affects the work-ing life of cracker.
Owing to there being such problem, so be necessary the cracker of existing chinlon 6 section production use to improve.
Summary of the invention
The purpose of this utility model is a kind of recovery cracker that can guarantee the chinlon 6 section production use of the normal work of cracker when strainer fault designing in order to solve the deficiency of above-mentioned technology.
The recovery cracker of the chinlon 6 section production use that the utility model is designed, comprise cracker body, this cracker body has a feed-pipe, it is characterized in that also comprising a hexanolactam storage tank, described hexanolactam storage tank is connected with described feed-pipe by liquid supplementation pipe, in described liquid supplementation pipe, be provided with make-up valve and fluid infusion pump, on described feed-pipe, be provided with under meter.
Preferred scheme is also to comprise a thermostatic tank, thermostatic tank is provided with constant temperature jacket, thermostatic tank is connected with an outer filtration unit by filtration cycle pipeline, the liquid-inlet pipe of thermostatic tank is connected with described feed-pipe, on liquid-inlet pipe, be provided with liquid feed valve, the drain pipe of thermostatic tank is also connected with described feed-pipe, is provided with liquid-outlet valve and Pump for giving-out on drain pipe, on described thermostatic tank, be also provided with vapor pipe, vapor pipe is provided with vent valve; Described hexanolactam storage tank is also connected with thermostatic tank by a transfer lime, is provided with transfer valve and transferpump on described transfer lime.In the situation of the normal work of such scheme Qian road triple-effect evaporator and concentrated flow container, when from strainer to feed-pipe, the concentrated solution discharge of conveying is normal, opening liquid feed valve can pre-deposit hexanolactam extraction water concentrated solution in thermostatic tank, thermostatic tank is constant makes feed liquid produce less polymerization and crystallization at specified temp, and feed liquid by filtration cycle pipeline outside filtration unit effectively filtered, like this when triple-effect evaporator delivery port liquid level is unstable or other reason causes that stopping up appears in strainer, the input flow rate of feed-pipe declines, under meter can react the appearance of this problem, now open liquid-outlet valve and Pump for giving-out, can by thermostatic tank through the feed liquid of filtration fill into in feed-pipe to guarantee the stable of its flow, switching that on the one hand can Wei Qian road strainer gains time, the cracker that can effectively guarantee on the other hand is normally worked, wherein, the fluid infusion of thermostatic tank operation can, prior to hexanolactam storage tank, because the liquid level in thermostatic tank can be supplemented in process of production online, be used more convenient, hexanolactam storage tank can also be the fluid infusion of thermostatic tank on the other hand.It should be noted that: thermostatic tank belongs to routine techniques, its structure is more, and as PT hot resistance is set in thermostatic tank, constant temperature jacket adopts electrically heated chuck, the signal of PT100 hot resistance inputs to a PID digital display meter, and PID digital display meter is controlled the work of electrically heated chuck and realized constant temperature; Or constant temperature jacket adopts steam jacket, the steam regulating valve work that PID digital display meter is controlled steam jacket ingress realizes constant temperature.
Further scheme is that the signal of described under meter inputs to a controller, and described liquid-outlet valve and Pump for giving-out are controlled in described controller output.Can when feed-pipe flow is low, realize automatic makeup like this and enter feed liquid.
The recovery cracker of the chinlon 6 section production use that the utility model is designed, its beneficial effect is: when triple-effect evaporator delivery port liquid level is unstable or other reason causes that stopping up appears in concentrated flow container strainer, the concentrated solution discharge of carrying from strainer to feed-pipe declines, now under meter can react the appearance of this problem, can be manually or automatically open make-up valve and fluid infusion pump, the hexanolactam having in hexanolactam storage tank can fill into in feed-pipe to guarantee the stable of its flow, effectively guarantee the stable of the interior liquid level of cracker, cracker can normally be worked, after guaranteeing cracking, concentrated solution enters the stay in grade that polymerizing pipe reacts rear product.
Accompanying drawing explanation
Fig. 1 is the structural representation of the recovery cracker of embodiment 1 chinlon 6 section production use;
Fig. 2 is the structural representation of extraction water hexanolactam recovery system;
Fig. 3 is the structural representation of the recovery cracker of embodiment 2 chinlon 6 section production use;
Fig. 4 is the structural representation of the recovery cracker of embodiment 3 chinlon 6 section production use;
In figure: cracker body 1, feed-pipe 2, hexanolactam storage tank 3, liquid supplementation pipe 4, make-up valve 5, under meter 6, thermostatic tank 7, constant temperature jacket 8, filtration cycle pipeline 9, outer filtration unit 10, liquid-inlet pipe 11, liquid feed valve 12, drain pipe 13, fluid infusion pump 14, liquid-outlet valve 15, Pump for giving-out 16, vapor pipe 17, vent valve 18, transfer lime 19, transfer valve 20, transferpump 21, controller 22, triple-effect evaporator 23, concentrated flow container 24, strainer 25.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
Embodiment 1:
As shown in Figure 1, 2, the recovery cracker of the described chinlon 6 section production of the present embodiment use, comprise cracker body 1, this cracker body 1 has a feed-pipe 2, it is characterized in that also comprising a hexanolactam storage tank 3, described hexanolactam storage tank 3 is connected with described feed-pipe 2 by liquid supplementation pipe 4, is provided with make-up valve 5 and fluid infusion pump 14 in described liquid supplementation pipe 4, on described feed-pipe 2, is provided with under meter 6.
The recovery cracker of the described chinlon 6 section production of the present embodiment use, its beneficial effect is: when triple-effect evaporator delivery port liquid level is unstable or other reason causes that stopping up appears in concentrated flow container strainer, the concentrated solution discharge of carrying to feed-pipe 2 from strainer declines, now under meter can react the appearance of this problem, can be manually or automatically open make-up valve 5 and fluid infusion pump 14, the hexanolactam having in hexanolactam storage tank 3 can fill into in feed-pipe 2 to guarantee the stable of its flow, effectively guarantee the stable of the interior liquid level of cracker, cracker can normally be worked, after guaranteeing cracking, concentrated solution enters the stay in grade that polymerizing pipe reacts rear product.
Embodiment 2:
As shown in Figure 3, the recovery cracker of the described chinlon 6 section production of the present embodiment use, as different from Example 1: also comprise a thermostatic tank 7, thermostatic tank 7 is provided with constant temperature jacket 8, thermostatic tank 7 is connected with an outer filtration unit 10 by filtration cycle pipeline 9, the liquid-inlet pipe 11 of thermostatic tank 7 is connected with described feed-pipe 2, on liquid-inlet pipe 11, be provided with liquid feed valve 12, the drain pipe 13 of thermostatic tank 7 is also connected with described feed-pipe 2, on drain pipe 13, be provided with liquid-outlet valve 15 and Pump for giving-out 16, on described thermostatic tank 7, be also provided with vapor pipe 17, vapor pipe 17 is provided with vent valve 18, described hexanolactam storage tank 3 is also connected with thermostatic tank 7 by a transfer lime 19, is provided with transfer valve 20 and transferpump 21 on described transfer lime 19.
Embodiment 3:
As shown in Figure 4, the recovery cracker of the described chinlon 6 section production of the present embodiment use, as different from Example 2: the signal of described under meter 6 inputs to a controller 22, described liquid-outlet valve 15 and Pump for giving-out 16 are controlled in described controller 22 outputs.
Specific embodiment described herein is only to design of the present utility model explanation for example.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (3)
1. the recovery cracker of a chinlon 6 section production use, comprise cracker body (1), this cracker body (1) has a feed-pipe (2), it is characterized in that also comprising a hexanolactam storage tank (3), described hexanolactam storage tank (3) is connected with described feed-pipe (2) by liquid supplementation pipe (4), in described liquid supplementation pipe (4), be provided with make-up valve (5) and fluid infusion pump (14), on described feed-pipe (2), be provided with under meter (6).
2. the recovery cracker of chinlon 6 section production use according to claim 1, it is characterized in that also comprising a thermostatic tank (7), thermostatic tank (7) is provided with constant temperature jacket (8), thermostatic tank (7) is connected with an outer filtration unit (10) by filtration cycle pipeline (9), the liquid-inlet pipe (11) of thermostatic tank (7) is connected with described feed-pipe (2), on liquid-inlet pipe (11), be provided with liquid feed valve (12), the drain pipe (13) of thermostatic tank (7) is also connected with described feed-pipe (2), on drain pipe (13), be provided with liquid-outlet valve (15) and Pump for giving-out (16), on described thermostatic tank (7), be also provided with vapor pipe (17), vapor pipe (17) is provided with vent valve (18), described hexanolactam storage tank (3) is also connected with thermostatic tank (7) by a transfer lime (19), is provided with transfer valve (20) and transferpump (21) on described transfer lime (19).
3. the recovery cracker of chinlon 6 section production use according to claim 2, is characterized in that the signal of described under meter (6) inputs to a controller (22), and described liquid-outlet valve (15) and Pump for giving-out (16) are controlled in described controller (22) output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420104927.5U CN203768272U (en) | 2014-03-10 | 2014-03-10 | Recovery cracker for production of chinlon 6 slice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420104927.5U CN203768272U (en) | 2014-03-10 | 2014-03-10 | Recovery cracker for production of chinlon 6 slice |
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| Publication Number | Publication Date |
|---|---|
| CN203768272U true CN203768272U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420104927.5U Expired - Fee Related CN203768272U (en) | 2014-03-10 | 2014-03-10 | Recovery cracker for production of chinlon 6 slice |
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| CN (1) | CN203768272U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110624494A (en) * | 2019-10-31 | 2019-12-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Gas-liquid reactor for improving titanium white waste acid concentration |
-
2014
- 2014-03-10 CN CN201420104927.5U patent/CN203768272U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110624494A (en) * | 2019-10-31 | 2019-12-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Gas-liquid reactor for improving titanium white waste acid concentration |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20180310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |