CN203852996U - Device for recycling organic solvent during preparation of polyimide film - Google Patents
Device for recycling organic solvent during preparation of polyimide film Download PDFInfo
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- CN203852996U CN203852996U CN201420166030.5U CN201420166030U CN203852996U CN 203852996 U CN203852996 U CN 203852996U CN 201420166030 U CN201420166030 U CN 201420166030U CN 203852996 U CN203852996 U CN 203852996U
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Abstract
The utility model relates to a device for recycling an organic solvent during preparation of a polyimide film. The device for recycling the organic solvent comprises a rotating wheel and a motor for driving the rotating wheel to rotate, wherein the rotating wheel comprises a treating area, a regenerating area and a cooling area; a circulating pipeline of the treating area is sequentially connected with a waste gas inlet, an air cooler, the treating area of the rotating wheel, a treating blower and a clean gas outlet; a circulating pipeline of the cooling area and the regenerating area is sequentially connected with an air outlet of the air cooler, the cooling area of the rotating wheel, a cooling blower, a cold air inlet-outlet hole of a heat exchanger, an auxiliary heater for regenerated air, the regenerating area of the rotating wheel, a cooler and a regenerating blower, and then is communicated with an air inlet of the air cooler to form a loop; a branch is sequentially connected with an imidization discharged organic waste gas inlet, a hot air inlet-outlet hole of the heat exchanger, a sprayer, and the air inlet of the air cooler. The device for recycling the organic solvent is long in service life, high in energy utilization efficiency and low in energy consumption for running, and the content of water in the recycled organic solvent is low.
Description
Technical field
The utility model relates to the retracting device of organic solvent in poly-acid imide thin film fabrication process.
Background technology
Kapton is the best organic film of current heat resistance, can keep in a short time its physical property at 555 DEG C, and long-term serviceability temperature is up to more than 300 DEG C.Moreover, the electric property of Kapton, radiation resistance and fire resistance are also very outstanding.Along with the development of the development of new and high technology, particularly aerospace industry, electric industry and information industry, the use amount of Kapton will be increasing.
The most general production method of Kapton be utilize by diamines with and acid anhydride polymerization in aprotic solvent obtains polyamic acid (PAA), then utilize aluminium foil proofing method or casting method or salivation pulling method polyamic acid (PPA) to be manufactured to film and hot-imide obtains polyimides (PI) film.
In Kapton production process, need to use a large amount of organic solvents, one ton of imines film of every production, all has the organic solvent of four tons of left and right to discharge, and if do not processed recovery, certainly will cause severe contamination to environment, and cause huge economic loss.
At present domestic condensation method or the condensation-spray process of generally using reclaims the organic solvent producing in Kapton production process, but these recovery methods all exist certain defect.
The method that condensation method reclaims organic solvent is exactly that the waste gas containing organic solvent is cooling through aerial cooler, makes part organic solvent condensate in waste gas, and the method rate of recovery only has 30-60% conventionally, and the rate of recovery changes greatly with atmospheric temperature.
Condensation-spray process reclaims organic solvent in waste gas and in waste gas, sprays water after supercooling at waste gas exactly again, utilizes water absorption of residual to stay the organic solvent in waste gas.While processing Kapton production process waste gas according to scientific and technical literature report condensation-spray process, organic solvent content in waste gas can reach the relative condensation method comparison of 120mg/m3., condensation-spray process rate of recovery increases substantially, but, along with the raising of environmental requirement, condensation-spray process organic exhaust gas after treatment cannot meet national requirements for environmental protection, and the concentration of the organic solvent reclaiming while being more importantly condensation-spray process recovery organic solvent is low.
Hot-imide method is normally carried out heat drying with heating mode continuously or progressively to polyamic acid casting films, then under higher temperature, heat-treats.For example, first dry 2h at 80 DEG C-130 DEG C, when the solid content that is dried to its film is 60wt%-70wt%, then is heated to gradually 300-400 DEG C by this film and makes polyamic acid casting films cyclodehydration, is converted into Kapton.
Kapton production process can produce the waste gas containing organic solvent of two kinds of different solvents content and different temperatures, a kind of waste gas produces from polyamic acid dry run, another waste gas produces from polyamic acid cyclodehydration process, in imidizate process, produces.
The waste gas producing in polyamic acid dry run is free from foreign meter, and still, in the waste gas producing in imidizate process, containing the impurity of some, after waste gas is cooling, these impurity can solidify in solid-state mode.
Summary of the invention
The utility model will solve above-mentioned technical problem, the retracting device of organic solvent in a kind of novel poly-acid imide thin film fabrication process is provided, organic solvent content in waste gas can be below 50mg/m3, and the operation energy resource consumption of equipment is simultaneously low, and the moisture content of the organic solvent of recovery is low.
Above-mentioned purpose of the present utility model is to be achieved by the following technical programs:
In Kapton production process, majority of organic solvent is discharged to atmosphere in polyimides dry run, and organic solvent in a small amount produces in polyimides process; The temperature of the organic exhaust gas that polyimides dry run produces is conventionally 130 DEG C of left and right, and the organic exhaust gas temperature that polyimides process produces is conventionally more than 200 DEG C.
The retracting device of organic solvent in poly-acid imide thin film fabrication process, comprise thering is treatment region, the runner of renewing zone and cooling zone, drive the motor of runner rotation, on treatment region circulation pipeline, sequentially connect exhaust gas entrance, aerial cooler, runner treatment region, process blower fan, clean gas outlet; After sequentially connecting the renewing zone, cooler, regeneration blower fan of cooling zone, cooling blower, import and export of heat exchanger cold air, regeneration air auxiliary heater, the runner of aerial cooler gas outlet, runner on cooling zone and renewing zone circulation pipeline, connect aerial cooler air inlet formation loop; One branch road sequentially connects organic exhaust gas import, the import and export of heat exchanger hot gas, spray thrower, the aerial cooler air inlet that imidizate is discharged.
The function of runner is to make to be separated into clean air and the air containing high levels of organic solvents containing the waste gas of organic solvent.It is formed by the material manufacture that can adsorb organic solvent.Runner is molecular sieve concentration runner, disc-shaped structure, and it is divided into three regions, treatment region, renewing zone, cooling zone by the plate that cuts of special manufacture.Runner rotation under electric rotating machine drives, the sorbing material on runner alternately rests on treatment region, rotary wheel regeneration district and runner cooling zone all the time.Runner direction of rotation is: forward rotary wheel regeneration district to from runner treatment region, then forward runner treatment region to from rotary wheel regeneration district, and so move in circles.
In the time flowing through from runner treatment region containing the air of organic solvent, airborne organic solvent is adsorbed by the sorbing material on runner, and air becomes pure air directly discharged to atmosphere.
When temperature is in the time that the hot-air of 180 DEG C of left and right flows through rotary wheel regeneration district, the organic solvent being adsorbed on runner can desorb from runner, and takes away with hot-air.The regeneration air of discharging from rotary wheel regeneration district is after subcooler is cooling, and airborne organic solvent meeting condensation, thus, realizes solvent and reclaim from waste gas.
Regeneration blower fan, its function is to make regeneration air flow through the regeneration zone of runner.Regeneration air auxiliary heater, its function is the temperature of fine adjustment regeneration air, normally electrical heating.
Cooling blower, its function is to make to flow through runner cooling zone through the cooled air of aerial cooler, air runner when the runner cooling zone is cooled and air is heated.Carry out, exchange heat, flowing through from rotary wheel regeneration district as regeneration air again with from amination stove hot-air out from runner cooling zone air out, make rotary wheel regeneration.
The utility model is by above-mentioned mechanism design, utilize the work of condensation-runner method for concentration, its maximum is characterised in that rotary wheel regeneration energy sources is in the waste gas of imidizate process discharge, the waste gas of imidizate process discharge simultaneously is also carried out purified treatment after heat exchange and carrying out washing treatment, the advantage of the utility model maximum is: the waste gas that amination stove produces is delivered to emission-control equipment after washing again, the possibility of the exhaust emission that emission-control equipment is produced by amination stove significantly declines, and retracting device increases substantially service life; Air through runner cooling zone is hot-air, and the waste gas that utilizes this part air and amination fire grate to go out can obtain the air of high temperature while carrying out exchange heat, and thus, retracting device efficiency of energy utilization is more increased.
Below in conjunction with accompanying drawing, the utility model is further described.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Detailed description of the invention
The utility model is the retracting device of organic solvent in poly-acid imide thin film fabrication process, comprise there is treatment region 10, the runner 2 of renewing zone 12 and cooling zone 11, the motor 13 that drives runner 2 to rotate, on treatment region circulation pipeline, sequentially connect exhaust gas entrance, aerial cooler 3, runner 2 treatment region 10, process blower fan 1, clean gas outlet; Rear connection aerial cooler 3 air inlets of cooling zone 11, cooling blower 14, heat exchanger 15 cold air import and export, regeneration air auxiliary heater 6, the renewing zone 12 of runner 2, cooler 5, regeneration blower fan 4 that sequentially connect aerial cooler 3 gas outlets, runner 2 on cooling zone and renewing zone circulation pipeline form loop; One branch road sequentially connects organic exhaust gas import, heat exchanger 15 hot gas import and export, spray thrower 16, aerial cooler 3 air inlets that imidizate is discharged.
In the time that retracting device is normally worked, enter retracting device containing the waste gas of organic solvent from a point.Fraction contains the waste gas of organic solvent after aerial cooler 3 is cooling, as regeneration air; Most of waste gas containing organic solvent after aerial cooler 3 is cooling, after runner treatment region, become pure air from b point discharged to atmosphere.D point is the import from the organic exhaust gas of imidizate discharge, this part waste gas is first after UTILIZATION OF VESIDUAL HEAT IN heat exchanger 15, through spray thrower, impurity in waste gas is removed in 16 washings again, finally mixes and jointly enters air organic solvent recovery device with the organic exhaust gas of polyimides dry run generation.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (1)
1. the retracting device of organic solvent in poly-acid imide thin film fabrication process, comprise there is treatment region (10), renewing zone (12) and cooling zone (11) runner (2), drive the motor (13) of runner (2) rotation, it is characterized in that: on treatment region circulation pipeline, sequentially connect exhaust gas entrance, aerial cooler (3), runner (2) treatment region (10), process blower fan (1), clean gas outlet; Rear aerial cooler (3) air inlet of connecting of cooling zone (11), cooling blower (14), the import and export of heat exchanger (15) cold air, regeneration air auxiliary heater (6), the renewing zone (12) of runner (2), cooler (5), regeneration blower fan (4) that sequentially connects aerial cooler (3) gas outlet, runner (2) on cooling zone and renewing zone circulation pipeline forms loop; One branch road sequentially connects organic exhaust gas import, the import and export of heat exchanger (15) hot gas, spray thrower (16), aerial cooler (3) air inlet that imidizate is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166030.5U CN203852996U (en) | 2014-04-08 | 2014-04-08 | Device for recycling organic solvent during preparation of polyimide film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420166030.5U CN203852996U (en) | 2014-04-08 | 2014-04-08 | Device for recycling organic solvent during preparation of polyimide film |
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| Publication Number | Publication Date |
|---|---|
| CN203852996U true CN203852996U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420166030.5U Expired - Fee Related CN203852996U (en) | 2014-04-08 | 2014-04-08 | Device for recycling organic solvent during preparation of polyimide film |
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| CN (1) | CN203852996U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104342785A (en) * | 2014-11-17 | 2015-02-11 | 马军 | Dry spinning organic solvent recovery and air circulating use method |
| CN104474843A (en) * | 2014-12-01 | 2015-04-01 | 马军 | Device for treating organic waste gas during production of printing plate material of computer-to-plate |
| TWI574726B (en) * | 2015-06-30 | 2017-03-21 | 吉能科技股份有限公司 | Solvent recycling device |
| CN108327377A (en) * | 2018-03-13 | 2018-07-27 | 广西师范大学 | A kind of preparation facilities of polyimide film or polyimide copper clad lamination |
| CN111569610A (en) * | 2020-04-26 | 2020-08-25 | 浙江中科玖源新材料有限公司 | Polyimide film production waste gas treatment process without discharging waste water and waste liquid |
-
2014
- 2014-04-08 CN CN201420166030.5U patent/CN203852996U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104342785A (en) * | 2014-11-17 | 2015-02-11 | 马军 | Dry spinning organic solvent recovery and air circulating use method |
| CN104474843A (en) * | 2014-12-01 | 2015-04-01 | 马军 | Device for treating organic waste gas during production of printing plate material of computer-to-plate |
| TWI574726B (en) * | 2015-06-30 | 2017-03-21 | 吉能科技股份有限公司 | Solvent recycling device |
| CN108327377A (en) * | 2018-03-13 | 2018-07-27 | 广西师范大学 | A kind of preparation facilities of polyimide film or polyimide copper clad lamination |
| CN108327377B (en) * | 2018-03-13 | 2023-05-23 | 广西师范大学 | Polyimide film or polyimide copper-clad plate's preparation facilities |
| CN111569610A (en) * | 2020-04-26 | 2020-08-25 | 浙江中科玖源新材料有限公司 | Polyimide film production waste gas treatment process without discharging waste water and waste liquid |
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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 |
Granted publication date: 20141001 |
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| CF01 | Termination of patent right due to non-payment of annual fee |