CN202762322U - Dimethylacetamide (DMAC) recycling device - Google Patents
Dimethylacetamide (DMAC) recycling device Download PDFInfo
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- CN202762322U CN202762322U CN 201220391995 CN201220391995U CN202762322U CN 202762322 U CN202762322 U CN 202762322U CN 201220391995 CN201220391995 CN 201220391995 CN 201220391995 U CN201220391995 U CN 201220391995U CN 202762322 U CN202762322 U CN 202762322U
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Abstract
The utility model relates to a DMAC recycling device. The DMAC recycling device comprises a plurality of gel grooves, wherein the plurality of gel grooves are arranged sequentially, every two adjacent gel grooves are connected through a pipeline, the left side of the gel groove on the left-most side is connected with a DMAC recovering tank through a pump, a spinneret plate is arranged at the top of the gel groove on the left-most side, the top of the spinneret plate is connected with a material liquid tank through a pipeline, the right side of the gel groove on the right-most side is connected with a pure water pipeline through a pump, a wire winding wheel is arranged at the top of the gel groove on the right-most side, film filaments sprayed by the spinneret plate enter all gel grooves sequentially, and right-most ends of film filaments are recovered through the wire winding wheel in a winding mode. According to the DMAC recycling device, a concentration step type is adopted, water is supplemented forward step by step, the cost is saved, the pollution is reduced, the speed for gelling of film filaments is accelerated during spinning, the occupied space of the device is saved by the aid of the reasonable groove design, simultaneously, the DMAC recycling method is simple in step, and the device is suitable for large-scale popularization and application.
Description
Technical field
The utility model relates to a kind of DMAC recycling device that is applied in the liquid phase separation film silk production process.
Background technology
DMAC:DMAC is dimethylacetylamide, can dissolve multiple compounds, can dissolve each other fully with water, ether, ketone, ester etc., has the characteristics such as heat endurance is high, facile hydrolysis, corrosivity be not low, and is of many uses.Dimethylacetylamide is to various kinds of resin, and especially polyurethane resin, polyimide resin have good solvability, mainly is used as the solvent of heat-resisting synthetic fibers, plastic sheeting, coating, medicine, acrylonitrile spinning.External multiplex in producing Kapton, soluble polyimide, polyimides-perfluoroethylene-propylene laminated film, polyimides (aluminium) film, soluble polyimide molding powder etc. at present; The domestic good polar solvent that is mainly used in Polymer Synthesizing fibre spinning and other organic syntheses.
Liquid phase separation film silk is produced: super, micro-filtration hollow-fibre membrane is produced most of this technique that adopts at present.And adopt DMAC to make solvent.The spinning technique mechanism of membrane material has three kinds.The first melt spinning method; The second thermally induced phase separation; The third solution causes phase separation method, and super, microfiltration membranes spinning belongs to the third.It specifically is put into stirring and dissolving in the stirred tank to PVDF, DMAC, additive according to a certain percentage, then with after the deaeration of feed liquid process, through beginning wire vent behind filter, the spinneret, the film silk is through tentatively typing behind the coagulation bath, after further the DMAC in core liquid and the feed liquid is separated out in the aqueous solution (principle of gel is exactly the displacement of liquid liquid, and DMAC is diffused in the water in the feed liquid, and water diffuses in the fenestra) through the gel groove, finally by crossing wrapping wire, post-treating and other steps, finally form the finished film silk.
DMAC concentration in liquid phase separation film silk production process in each cell body can only be controlled separately, because groove quantity is many, concentration needs regularly to detect, and needs simultaneously regularly moisturizing to regulate, and can only collect separately or emit when reaching finite concentration, this is so that labor strength is very large.Each groove is all collected, and collection liquid concentration is inconsistent, brings difficulty for the DMAC regeneration.In addition, on the number one groove air exhausting device is arranged, safe level is high; And because technological requirement and working environment requirement, concentration can not be too high after No. second groove, and the DMAC concentration of discharging does not reach the standard of recovery, and this not only causes the waste of raw material, and environment is also caused very large pollution.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of DMAC recycling device, and the DMAC recycling device adopts the design of staged cell body, and efficient is high, and DMAC solution adopts the rectifying column distillation to reach recycling purpose after collecting, and greatly reduces cost of material.
DMAC recycling device of the present utility model, comprise a plurality of gel grooves that are arranged in order, connect by pipeline between adjacent two gel grooves, the pump that passes on left that is positioned at leftmost side gel groove connects the DMAC collection box, the top that is positioned at leftmost side gel groove is provided with spinneret, spinneret connects respectively feed liquid pipeline and core liquid pipeline, the right side that is positioned at rightmost side gel groove connects the pure water pipeline by pump, the top that is positioned at rightmost side gel groove is provided with wire wrapping wheel, the film silk of spinneret ejection enters each gel groove successively, and the low order end of film silk twines by wire wrapping wheel and reclaims.
DMAC recycling device of the present utility model arranges respectively pump and valve on the connecting line between described adjacent two gel grooves.
A kind of DMAC circulation utilization method may further comprise the steps:
1) in spinning process, the film silk of spinneret ejection passes through each gel groove successively, and the DMAC in the film silk precipitate in each gel groove, when the DMAC concentration in the gel groove of the leftmost side is higher than technological standards, open the pump in gel groove left side, the leftmost side, DMAC is recovered in the DMAC collection box;
2) open successively pump and valve between each gel groove, simultaneously to the inner pure water that replenishes of the gel groove of the rightmost side, and then reaching the DMAC concentration that reduces successively each gel groove inside, the DMAC of each gel groove inside finally enters the gel groove inside of the leftmost side and is recovered in the DMAC collection box;
3) after the DMAC in the DMAC collection box filters by 30 μ m precision, enter in the rectifying column, through heating evaporation, condensation, backflow, obtain the DMAC solution of available high concentration.
Compared with prior art the beneficial effects of the utility model are: the DMAC recycling device adopts the concentration staged, step by step moisturizing forward, not only provide cost savings, reduced pollution, when spinning, also accelerated the speed of film silk gel, the occupation of land space that equipment has been saved in rational cell body design, DMAC circulation utilization method step is simple simultaneously, suits to apply on a large scale.
Description of drawings
Fig. 1 is the structural representation of the described a kind of DMAC recycling device of the utility model embodiment.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 1, a kind of DMAC recycling device, comprise a plurality of gel grooves 1 that are arranged in order, connect by pipeline between adjacent two gel grooves 1, the pump that passes on left that is positioned at leftmost side gel groove 1 connects the DMAC collection box, the top that is positioned at leftmost side gel groove is provided with spinneret 2, spinneret 2 connects respectively feed liquid pipeline 3 and core liquid pipeline 4, the right side that is positioned at rightmost side gel groove 1 connects pure water pipeline 5 by pump, the top that is positioned at rightmost side gel groove 1 is provided with wire wrapping wheel 6, the film silk 7 of spinneret 2 ejections enters each gel groove 1 successively, and the low order end of film silk 7 twines by wire wrapping wheel 6 and reclaims.
DMAC recycling device of the present utility model arranges respectively pump and valve on the connecting line between described adjacent two gel grooves 1.
A kind of DMAC circulation utilization method may further comprise the steps:
1) in spinning process, the film silk 7 of spinneret 2 ejections passes through each gel groove 1 successively, DMAC in the film silk 7 precipitate in each gel groove 1, when the DMAC concentration in the leftmost side gel groove 1 is higher than technological standards, open the pump in gel groove 1 left side, the leftmost side, DMAC is recovered in the DMAC collection box;
2) open successively pump and valve between each gel groove 1, gel groove 1 inside to the rightmost side replenishes pure water simultaneously, and then reaching the DMAC concentration that reduces successively each gel groove 1 inside, the DMAC of each gel groove 1 inside finally enters gel groove 1 inside of the leftmost side and is recovered in the DMAC collection box;
3) after the DMAC in the DMAC collection box filters by 30 μ m precision, enter in the rectifying column, through heating evaporation, condensation, backflow, obtain the DMAC solution of available high concentration.
The utility model is by after the reasonable computation concentration growth rate, the gel groove is divided into some sections as required, it is staged, according to the spinning technique flow process, each gel groove concentration is arranged from high to low, when spinning, DMAC in the feed liquid can be diffused in each gel groove, when leftmost side gel groove concentration is higher than technological standards, reclaim, then the liquid in the next cell body (second the gel groove in left side) is circulated to and reduces its concentration in the gel groove of the leftmost side, the like, be staged, when actual production, the concentration in each gel groove can reach a balance, the 1st groove concentration is the highest, n groove concentration is minimum, when liquid is circulated in the n-1 groove in the n groove, only needs to add pure water and get final product in the n groove.The characteristics that staged gel groove is arranged are to add pure water in the gel groove of the rightmost side, collect at leftmost side gel groove, middle each gel groove is by the step by step forward fluid infusion of reasonable setting of pump and valve, need not reclaim separately, the advantage that reclaims at leftmost side gel groove is that DMAC concentration is higher, later stage reuse cost.
The above only is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (2)
1. DMAC recycling device, comprise a plurality of gel grooves that are arranged in order, it is characterized in that: connect by pipeline between said adjacent two gel grooves, the pump that passes on left that is positioned at leftmost side gel groove connects the DMAC collection box, the top that is positioned at leftmost side gel groove is provided with spinneret, spinneret connects respectively feed liquid pipeline and core liquid pipeline, the right side that is positioned at rightmost side gel groove connects the pure water pipeline by pump, the top that is positioned at rightmost side gel groove is provided with wire wrapping wheel, the film silk of spinneret ejection enters each gel groove successively, and the low order end of film silk twines by wire wrapping wheel and reclaims.
2. said DMAC recycling device according to claim 1 is characterized in that: on the connecting line between described adjacent two gel grooves pump and valve are set respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391995 CN202762322U (en) | 2012-08-08 | 2012-08-08 | Dimethylacetamide (DMAC) recycling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391995 CN202762322U (en) | 2012-08-08 | 2012-08-08 | Dimethylacetamide (DMAC) recycling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202762322U true CN202762322U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220391995 Withdrawn - After Issue CN202762322U (en) | 2012-08-08 | 2012-08-08 | Dimethylacetamide (DMAC) recycling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202762322U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787395A (en) * | 2012-08-08 | 2012-11-21 | 北京碧水源膜科技有限公司 | Dimethylacetamide (DMAC) recycling device and method |
-
2012
- 2012-08-08 CN CN 201220391995 patent/CN202762322U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102787395A (en) * | 2012-08-08 | 2012-11-21 | 北京碧水源膜科技有限公司 | Dimethylacetamide (DMAC) recycling device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130306 Effective date of abandoning: 20140507 |
|
| RGAV | Abandon patent right to avoid regrant |