CN203768166U - Concentrating device of caprolactam in extracted water for production of chinlon 6 slice - Google Patents
Concentrating device of caprolactam in extracted water for production of chinlon 6 slice Download PDFInfo
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- CN203768166U CN203768166U CN201420104994.7U CN201420104994U CN203768166U CN 203768166 U CN203768166 U CN 203768166U CN 201420104994 U CN201420104994 U CN 201420104994U CN 203768166 U CN203768166 U CN 203768166U
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- hexanolactam
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Abstract
The utility model discloses a concentrating device of caprolactam in extracted water for production of a chinlon 6 slice. The device comprises two three-effect evaporators and a concentrated solution tank, wherein the outlet of the concentrated solution tank is connected with two filters through a switching valve, the filters are connected with an output pipe which is provided with a transfer pump and a flowmeter, and the concentrated solution outlets of the two three-effect evaporators are connected with the inlet of the concentrated solution tank; the concentrating device of caprolactam in extracted water further comprises a caprolactam storage tank which is connected with the output pipe through a liquid supplementing pipe which is provided with a liquid supplementing pump and a liquid supplementing valve. Two three-effect evaporators are arranged in the concentrating device, and thus the fluctuating range of concentration of the output concentrated solution can be reduced and the influence is reduced. When the filters fail, the caprolactam solution stored in the caprolactam storage tank can be manually or automatically supplemented to the output pipe, thereby ensuring the outputting stability of the concentrated solution.
Description
Technical field
The utility model relates to a kind of concentrating unit, especially a kind of extraction water hexanolactam concentrating unit of chinlon 6 section production use.
Background technology
Polyamide fibre, claims again " nylon ", because demand becomes greatly the main flow kind of domestication fibre manufacturing enterprise.Polyamide fibre can be synthetic with a kind of monomer, as lactan or amino acid.Now the Arabic numerals after polyamide fibre title show lactan used or amino acid whose carbon atom number, as polyamide fibre 6, polyamide fibre 66 etc.Polyamide fibre 6 is polycaprolactam fiber, and 412 pages of the < < man-made fiber dictionary > > of the first version second impression in 95 years disclose this concept: polycaprolactam fiber is called for short polyamide fibre 6 in China.Chinlon 6 section is the main raw material of producing polyamide fibre 6.
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.
The extraction water hexanolactam concentrating unit of chinlon 6 section production use comprises a triple-effect evaporator and concentrated flow container, described concentrated flow container peripheral hardware has the chuck of adding and circulating line, and the outlet of this concentrated flow container is connected with two strainers by switching valve, described strainer is connected with output tube, on output tube, be provided with transferpump and under meter, in process of production, thereby the phenomenon that strainer 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 switching, the output flow of whole concentrating unit will produce fluctuation, even there is the existing picture of cutout, the normal work of its follow-up cracker will be affected thus, the liquid level of cracker ingress will produce even cutout of fluctuation, after causing cracking, concentrated solution enters the rear product quality shakiness of polymerizing pipe reaction, also affects the work-ing life of cracker simultaneously.
Owing to there being such problem, so be necessary the extraction water hexanolactam concentrating unit of existing chinlon 6 section production use to improve.
Summary of the invention
The purpose of this utility model is a kind of extraction water hexanolactam concentrating unit 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 extraction water hexanolactam concentrating unit of the polyamide fibre section production use that the utility model is designed, comprise triple-effect evaporator and concentrated flow container, described concentrated flow container peripheral hardware has the chuck of adding and circulating line, and the outlet of this concentrated flow container is connected with two strainers by switching valve, described strainer is connected with output tube, on output tube, be provided with transferpump and under meter, totally two of described triple-effect evaporators, the concentrated solution outlet of two triple-effect evaporators is all connected with the import of described concentrated flow container; This extraction water hexanolactam concentrating unit also comprises a hexanolactam storage tank, and described hexanolactam storage tank connects described output tube by liquid supplementation pipe, is provided with fluid infusion pump and make-up valve in liquid supplementation pipe.
As preferably: the signal of described under meter inputs to a controller, described fluid infusion pump and make-up valve are controlled in described controller output; Such scheme can be on output tube when flow rate fluctuation or cutout, and hexanolactam concentrating unit is from the fluid infusion of trend output tube.
Preferred scheme is also to comprise a steam supply device, this steam supply device comprises steam manifold, steam-supply pipe, return pipe, vapor can and vapor jet pump, its steam inlet connection steam manifold of described vapor jet pump, its bleeding point connect described vapor can, its steam drain connects described steam-supply pipe, described return pipe is connected with vapor can, one effect tank steam inlet of two triple-effect evaporators is all connected with described steam-supply pipe, and an effect tank vapour outlet of two triple-effect evaporators is all connected with described return pipe, such scheme, steam-supply pipe can be the steam jacket steam supply outside an effect tank, return pipe can reclaim the steam that the steam jacket from an effect tank is discharged, this part reclaims steam and is comprised of steam and water of condensation, the final steam that reclaims is stored in vapor can, when producing, when passing through vapor jet pump, steam manifold live steam out can produce negative pressure, negative pressure can be by the recovered steam in vapor can also suction to vapor jet pump, both are the steam jacket steam supply outside an effect tank jointly after mixing also supercharging, form thus effectively circulation, steam has just obtained good recycling like this, the residue heat energy reclaiming in steam can be fully used, thereby reach energy-conservation object.
Further scheme is that described return pipe is connected with vapor can by a taper bucket; When such scheme recovered steam passes through taper bucket, recovered steam makes progress away, and water of condensation is to dirty, and taper bucket can be separated recovered steam and water of condensation better, is more conducive to the recycling of recovered steam.
Further scheme is that nichrome wire is posted in the bottom of described taper bucket, on taper bucket bottom surface, is interval with the bar that dams; Owing to entering taper bucket time space from return pipe, sharply increase, the fluctuation of pressure makes water of condensation more easily be converted into steam, employing is partly implemented heat protocol at taper bucket can obtain more steam, the arranging of bar of damming can, for the dirty obstruction that arranges of water of condensation, can better be heated water of condensation; The electrical heating wire heats being attached on taper bucket bottom surface is more even.
Further scheme is that described vapor can below is provided with water pot, between described vapor can and water pot, is provided with support bar; Described vapor can communicates by a strainer tube and a upflow tube with water pot, is provided with filtration weighting material in strainer tube; Described water pot middle part is provided with filtering membrane, in water pot bottom, is provided with water tap; Such scheme has water of condensation purification function, for there is the water of steam, need to pass through the steps such as deoxygenation, deionization, therefore the water of condensation forming in steam-pipe in fact can be thought the deionized water with impurity, and after removal impurity, this partial condensation water can be used as the finish diluent (certainly also can be used on elsewhere) in production process.In process of production; water of condensation can down ooze bit by bit by the filtration weighting material in strainer tube on the one hand; thereby effectively remove impurity; when water of condensation is too much; the water of condensation that surpasses upflow tube can directly enter in water pot by upflow tube again; can prevent from like this because liquid level is too high, return pipe being blocked; guarantee not affect the normal recovery of water of condensation; water of condensation in water pot can further be removed impurity by filtering membrane; what therefore from water tap, emit is pure deionized water, can be in industrial use.
The extraction water hexanolactam concentrating unit of the polyamide fibre section production use that the utility model is designed, its beneficial effect is: first, totally two of triple-effect evaporators, when one of them triple-effect evaporator generation fault causes output concentrated solution fluctuation of concentration, another triple-effect evaporator still can normally be worked, the degree of convergence that can reduce like this output concentrated solution fluctuation of concentration, reduces impact; Second, when strainer breaks down, when the flow rate fluctuation on output tube or cutout, under meter can detect the generation of this problem, then can adopt artificial or automatic mode to open make-up valve and fluid infusion pump, the caprolactam solution of hexanolactam storage tank stores can fill into output tube, thereby guarantees the stability of concentrated solution output, thereby level stability in assurance cracker, reaches the effect of polymerization product stay in grade.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3 steam supply devices and triple-effect evaporator;
Fig. 4 is the structural representation of embodiment 4 steam supply devices;
Fig. 5 is the structural representation of embodiment 5 steam supply device taper buckets;
Fig. 6 is the structural representation of embodiment 6 steam supply device vapor cans and water pot;
In figure: triple-effect evaporator 1, concentrated flow container 2, add chuck 3, circulating line 4, switching valve 5, strainer 6, output tube 7, transferpump 8, under meter 9, concentrated solution outlet 10, hexanolactam storage tank 11, liquid supplementation pipe 12, fluid infusion pump 13, make-up valve 14, controller 15, steam supply device 16, steam manifold 17, steam-supply pipe 18, return pipe 19, vapor can 20, vapor jet pump 21, one effect tank steam inlet 22, one effect tank vapour outlet 23, taper bucket 24, nichrome wire 25, bar 26 dams, water pot 27, support bar 28, strainer tube 29, upflow tube 30, filter weighting material 31, filtering membrane 32, water tap 33, extraction water import 34.
Embodiment
Below by embodiment, the utility model will be further described by reference to the accompanying drawings.
Embodiment 1:
As shown in Figure 1, the extraction water hexanolactam concentrating unit of the described chinlon 6 section production of the present embodiment use, comprise triple-effect evaporator 1 and concentrated flow container 2, outer being provided with of described concentrated flow container 2 adds chuck 3 and circulating line 4, and the outlet of this concentrated flow container 2 is connected with two strainers 6 by switching valve 5, described strainer 6 is connected with output tube 7, on output tube 7, be provided with transferpump 8 and under meter 9, totally two of described triple-effect evaporators 1, the concentrated solution outlet 10 of two triple-effect evaporators 1 is all connected with the import of described concentrated flow container 2; This extraction water hexanolactam concentrating unit also comprises a hexanolactam storage tank 11, and described hexanolactam storage tank 11 connects described output tube 7 by liquid supplementation pipe 12, is provided with fluid infusion pump 13 and make-up valve 14 in liquid supplementation pipe 12.
Embodiment 2:
As shown in Figure 2, the extraction water hexanolactam concentrating unit of the described chinlon 6 section production of the present embodiment use, as different from Example 1: the signal of described under meter 9 inputs to a controller 15, described fluid infusion pump 13 and make-up valve 14 are controlled in described controller 15 outputs.
Embodiment 3:
As shown in Figure 3, the extraction water hexanolactam concentrating unit of the described chinlon 6 section production of the present embodiment use, as different from Example 1: also comprise a steam supply device 16, this steam supply device 16 comprises steam manifold 17, steam-supply pipe 18, return pipe 19, vapor can 20 and vapor jet pump 21, described vapor jet pump 21 its steam inlets connect steam manifold 17, its bleeding point connects described vapor can 20, its steam drain connects described steam-supply pipe 18, described return pipe 19 is connected with vapor can 20, one effect tank steam inlet 22 of two triple-effect evaporators 1 is all connected with described steam-supply pipe 18, one effect tank vapour outlet 23 of two triple-effect evaporators 1 is all connected with described return pipe 19.
Embodiment 4:
As shown in Figure 3, the extraction water hexanolactam concentrating unit of the described chinlon 6 section production of the present embodiment use, as different from Example 1: described return pipe 19 is connected with vapor can 20 by a taper bucket 24.
Embodiment 5:
As shown in Figure 4, the extraction water hexanolactam concentrating unit of the described chinlon 6 section production of the present embodiment use as different from Example 1: nichrome wire 25 is posted in the bottom of described taper bucket 24, is interval with the bar 26 that dams on taper bucket 24 bottom surfaces.
Embodiment 6:
As shown in Figure 6, the extraction water hexanolactam concentrating unit of the described chinlon 6 section production of the present embodiment use, as different from Example 1: described vapor can 20 belows are provided with water pot 27, between described vapor can 20 and water pot 27, are provided with support bar 28; Described vapor can 20 communicates by a strainer tube 29 and a upflow tube 30 with water pot 27, is provided with and filters weighting material 31 in strainer tube 29; Described water pot 27 middle parts are provided with filtering membrane 32, in water pot 27 bottoms, are provided with water tap 33.
It should be noted that, can also on the basis of embodiment 4 and 5, be similar to the change of the present embodiment.
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 (8)
1. the extraction water hexanolactam concentrating unit of a chinlon 6 section production use, comprise triple-effect evaporator (1) and concentrated flow container (2), outer being provided with of described concentrated flow container (2) adds chuck (3) and circulating line (4), and the outlet of this concentrated flow container (2) is connected with two strainers (6) by switching valve (5), described strainer (6) is connected with output tube (7), on output tube (7), be provided with transferpump (8) and under meter (9), it is characterized in that totally two of described triple-effect evaporators (1), the concentrated solution outlet (10) of two triple-effect evaporators (1) is all connected with the import of described concentrated flow container (2), this extraction water hexanolactam concentrating unit also comprises a hexanolactam storage tank (11), and described hexanolactam storage tank (11) connects described output tube (7) by liquid supplementation pipe (12), is provided with fluid infusion pump (13) and make-up valve (14) in liquid supplementation pipe (12).
2. the extraction water hexanolactam concentrating unit of chinlon 6 section production use according to claim 1, the signal that it is characterized in that described under meter (9) inputs to a controller (15), and described fluid infusion pump (13) and make-up valve (14) are controlled in described controller (15) output.
3. the extraction water hexanolactam concentrating unit of chinlon 6 section production use according to claim 1 and 2, it is characterized in that also comprising a steam supply device (16), this steam supply device (16) comprises steam manifold (17), steam-supply pipe (18), return pipe (19), vapor can (20) and vapor jet pump (21), its steam inlet of described vapor jet pump (21) connects steam manifold (17), its bleeding point connects described vapor can (20), its steam drain connects described steam-supply pipe (18), described return pipe (19) is connected with vapor can (20), one effect tank steam inlet (22) of two triple-effect evaporators (1) is all connected with described steam-supply pipe (18), one effect tank vapour outlet (23) of two triple-effect evaporators (1) is all connected with described return pipe (19).
4. the extraction water hexanolactam concentrating unit of chinlon 6 section production use according to claim 3, is characterized in that described return pipe (19) is connected with vapor can (20) by a taper bucket (24).
5. the extraction water hexanolactam concentrating unit of chinlon 6 section production use according to claim 4, is characterized in that nichrome wire (25) is posted in the bottom of described taper bucket (24), on taper bucket (24) bottom surface, is interval with the bar that dams (26).
6. the extraction water hexanolactam concentrating unit of chinlon 6 section production use according to claim 3, is characterized in that described vapor can (20) below is provided with water pot (27), is provided with support bar (28) between described vapor can (20) and water pot (27); Described vapor can (20) communicates by a strainer tube (29) and a upflow tube (30) with water pot (27), is provided with and filters weighting material (31) in strainer tube (29); Described water pot (27) middle part is provided with filtering membrane (32), in water pot (27) bottom, is provided with water tap (33).
7. the extraction water hexanolactam concentrating unit of chinlon 6 section production use according to claim 4, is characterized in that described vapor can (20) below is provided with water pot (27), is provided with support bar (28) between described vapor can (20) and water pot (27); Described vapor can (20) communicates by a strainer tube (29) and a upflow tube (30) with water pot (27), is provided with and filters weighting material (31) in strainer tube (29); Described water pot (27) middle part is provided with filtering membrane (32), in water pot (27) bottom, is provided with water tap (33).
8. the extraction water hexanolactam concentrating unit of chinlon 6 section production use according to claim 5, is characterized in that described vapor can (20) below is provided with water pot (27), is provided with support bar (28) between described vapor can (20) and water pot (27); Described vapor can (20) communicates by a strainer tube (29) and a upflow tube (30) with water pot (27), is provided with and filters weighting material (31) in strainer tube (29); Described water pot (27) middle part is provided with filtering membrane (32), in water pot (27) bottom, is provided with water tap (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420104994.7U CN203768166U (en) | 2014-03-10 | 2014-03-10 | Concentrating device of caprolactam in extracted water for production of chinlon 6 slice |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420104994.7U CN203768166U (en) | 2014-03-10 | 2014-03-10 | Concentrating device of caprolactam in extracted water for production of chinlon 6 slice |
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| CN203768166U true CN203768166U (en) | 2014-08-13 |
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| CN201420104994.7U Expired - Fee Related CN203768166U (en) | 2014-03-10 | 2014-03-10 | Concentrating device of caprolactam in extracted water for production of chinlon 6 slice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142669A (en) * | 2020-07-14 | 2020-12-29 | 中国石油化工股份有限公司 | High-efficiency dehydration method of caprolactam |
-
2014
- 2014-03-10 CN CN201420104994.7U patent/CN203768166U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112142669A (en) * | 2020-07-14 | 2020-12-29 | 中国石油化工股份有限公司 | High-efficiency dehydration method of caprolactam |
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| C14 | Grant of patent or utility model | ||
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| 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: 20140813 Termination date: 20180310 |