CN201620117U - Devolatilization device of soluble high molecular polymer - Google Patents
Devolatilization device of soluble high molecular polymer Download PDFInfo
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- CN201620117U CN201620117U CN2009202237548U CN200920223754U CN201620117U CN 201620117 U CN201620117 U CN 201620117U CN 2009202237548 U CN2009202237548 U CN 2009202237548U CN 200920223754 U CN200920223754 U CN 200920223754U CN 201620117 U CN201620117 U CN 201620117U
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Abstract
The utility model discloses a devolatilization device of a soluble high molecular polymer, which comprises a thermal insulation container, a metering pressure pump, a vacuum devolatilization machine and a receiver, wherein the metering pressure pump is connected with the thermal insulation container and the vacuum devolatilization machine; a heating zone and a cooling zone are arranged in the vacuum devolatilization machine; and the receiver is connected with the cooling zone of the vacuum devolatilization machine. In the technical scheme of the utility model, devolatilization can be carried out at a relatively lower temperature so as to lower the polymerization degree degradation of high temperature on the polymer; for the aqueous solution of the soluble polymer, the polymer can be rapidly dried from the lowest temperature (25 DEG C) to the highest temperature (not exceeding 80 DEG C), and the degradation on the polymerization degree of materials is lowered to the maximum degree.
Description
Technical field
The utility model relates to a kind of devolatilization device, especially a kind of devolatilization device that is used for soluble high molecular polymers.
Background technology
The devolatilization technology of soluble high molecular polymers has a variety of modes up to now, if the soluble high molecular polymers of molecular weight between 8000～300,000 generally speaking, using the spraying drying way is a way the most general.U.S. Pat 4,794,167 and US4,892,932 have announced the related approaches of using the spraying drying way to come dry polymer.In addition, U.S. Pat 5252704 announced a kind of with Polyvinylpyrolidone (PVP) as dispersing auxiliary to the spraying drying way of second-order transition temperature less than 50 ℃ redispersible dissolve polymer.
But spraying drying has more restriction for the composition of product, second-order transition temperature etc.Greater than the high molecular polymer more than 300,000, there is the atomizing difficulty in spraying drying for molecular weight, and too weak point can not be with the droplet drying duration of contact for droplet and warm air, and tough material adheres to problems such as accumulation in a large number at the drying tower inwall.Therefore in fact exist a lot of soluble polymers not carry out the exsiccant problem with the spraying drying way, simultaneous spray drying exists also that energy consumption is big, warm air consumes greatly, and organic solvent reclaims difficulty, and there are problems such as air and sound pollution in the energy consumption height.
U.S. Pat 5,394,622 have announced a kind of technology of coming the thicker polymers soln of dry different temperature controlled region with subregion temperature key-course (band), be characterized in that warm air with differing temps comes drying to be layered on coming dry polymer and preventing to contain solvent polymeric thing blistered problem in drying process of thicker polymer film on chassis or the transport tape, thus obtain a kind of uniformly, the bright and clean dry film of polymkeric substance of appearance.This technology can realize working continuously, but can not carry out under vacuum condition, therefore can not utilize the low-temperature evaporation under the condition of negative pressure, can not accomplish very desirable to the anti-pollution measure of material.
Drying for high molecular, full-bodied water-soluble polymers polyvinylpyrrolidonesolution solution, Chinese patent CN1821690, Japanese Patent spy open 2002-146033 and disclose on a kind of appearance heat-transfer surface that uses the extrusion roller aqueous solutions of polymers to be coated on rotary dryer and carry out drying, then the dry way of dried polymeric film being peeled off with scraper plate.The distinct disadvantage of this way is that drying is carried out in open operating space, the humidity of environment is very big for the exsiccant influence, need very high temperature the moisture in the superpolymer could be got rid of, but higher temperature tends to cause molecular rupture for polymkeric substance, degradation problem under the polymerization degree, so the K value of polyvinylpyrrolidone has bigger decline before dry and after the drying; The moisture (steam) that ejects in the polymkeric substance has entered operating environment simultaneously, and can only solve removing of steam by operating environment; Open operation has also brought the mutual cross-contamination issue of material, operator, operating environment; and such problem can not be solved fully by individual's protection of the cleanliness factor that improves environment, improvement operator; collapse from its surface sometimes after drying such as the polymkeric substance that sticks to the drying machine surface; splash in ground or the air, can bring a lot of operations and managerial inconvenience thus.Simultaneously, for the soluble polymer that comprises other solvents beyond the water, because of this method can not reclaim solvent and the solvent contamination problem under open environment can't solve.Equally, this method also exists with the spray-drying process similar problem---heat energy efficiency is lower; Also have a significant disadvantages to be, if the thermo-sensitivity of polymkeric substance is higher, in non-pressurized open space, the time that certainly will require the medium temperature of drying or devolatilization higher, heat is longer, like this for some thermosensitive polymer, will certainly cause the reduction of the polymerization degree and the generation of oxidizing reaction, and produce the problems such as variation on color, the smell.
Common intermittent type Vacuumdrier can only pass in and out material under normal pressure; each input and output material must frequently be done negative pressure and non-pressurized conversion; very loaded down with trivial details and most dependence manual operations; working efficiency is low; for most of plant-scale soluble polymer products, can only be used to test or the production of pilot scale, can not be used for the production purpose of mass-producing.The possibility that also has the mutual crossed contamination between material, environment and operator simultaneously.
Therefore, be necessary the devolatilization device of a kind of improved soluble polymer product of utility model, it can be in airtight space, under the condition of vacuum or high vacuum, with lower medium temperature, and the way of soluble polymer being carried out devolatilization in the mode of successive charging and discharging reclaims drying or devolatilization under material in solvent (or water), the devolatilization process and environment, the complete isolation of operator simultaneously to greatest extent.
Summary of the invention
Technical problem to be solved in the utility model provides and a kind ofly can be implemented in that successive carries out devolatilization or exsiccant vacuum devolatilization device to soluble polymer under airtight vacuum or the high vacuum state, reach simultaneously with relatively low temperature and carry out devolatilization to reduce the polymerization degree degraded of high temperature to polymkeric substance, at utmost reclaim material and environment in solvent (or water) the realization devolatilization process, devolatilization or drying under the complete isolation of operator, thereby reduce the devolatilization time, increase efficient, cut down the consumption of energy, and make process of producing product meet the code requirement of GMP better.As solvent is under the situation of water, can obtain moisture less than 5% dry polymer powder, as the polymers soln of solution common organic solvents, then can obtain polymer powder or partical below 3%.
In order to solve the problems of the technologies described above, the utility model provides a kind of devolatilization device that is used for soluble high molecular polymers, this devolatilization device is made up of insulating container, metering-type pressure pump, vacuum devolatilization machine and material receiver, the metering-type pressure pump connects insulating container and vacuum devolatilization machine, part has heating zone and cooling zone in this vacuum devolatilization machine, and described material receiver is connected with the cooling zone of vacuum devolatilization machine.
As a kind of preferred version, inner heating zone of described vacuum devolatilization machine and cooling zone are distributed on the crawler belt, be connected with heating agent up and down between the aspect at the anterior crawler belt of this vacuum devolatilization machine and form the heating zone, be connected with refrigerant up and down between the aspect at this vacuum devolatilization machine rear portion crawler belt and form the cooling zone.
Further, there is a distributor the anterior crawler belt of described vacuum devolatilization machine top.
Further, described insulating container is a stirring-type strap clamp cover insulating container.
As a kind of preferred version, condenser is introduced by outlet pipe in described vacuum devolatilization machine top, and the other end top of described condenser is communicated with the vacuum unit.
As a kind of preferred version, described material receiver stirs cage by the recovering hopper of blank chopper, bottom and spiral discharging and forms, the material that downcuts is by stirring the pulverizer that cage is transported to vacuum devolatilization machine outside, material through pulverizing enters pipeline by a bottom screen cloth, and this pipeline links to each other with splice jug by a valve of opening.
The beneficial effects of the utility model are:
1, technical solutions of the utility model can enough relatively low temperature be carried out devolatilization to reduce the polymerization degree degraded of high temperature to polymkeric substance, the aqueous solution for water-soluble polymers, can be from minimum 25 ℃, dry polymer fast under the highest temperature that is no more than 80C, and farthest reduce degraded to the material polymerization degree.
2, technical solutions of the utility model can at utmost reclaim solvent (or water).
3, devolatilization or the drying under material in the technical solutions of the utility model realization devolatilization process and environment, the complete isolation of operator, thereby reduce the devolatilization time, increase efficient, cut down the consumption of energy, make process of producing product meet the code requirement of GMP better.
4, the characteristics of technical solutions of the utility model are, if solvent is under the situation of water, moisture be can obtain less than 5% dry polymer powder,, polymer powder or partical below 3% then can be obtained if solvent is the polymers soln of common organic solvents.
5, the characteristics of technical solutions of the utility model are, the medium of its heating (heating agent) can be hot water, steam, thermal oil, because of most of soluble polymers can be in the characteristics of low temperature devolatilization under the high vacuum condition, can utilize the band waste heat of recovery steam condenses, utilize heat energy media such as boiler afterheat regenerated hot water, thereby the reduction carbon emission reaches the purpose of energy-conserving and environment-protective.
Description of drawings
Below in conjunction with the drawings and specific embodiments technical solutions of the utility model are described in further detail.
Fig. 1 is the structural representation of the utility model devolatilization device.
Embodiment
As shown in Figure 1, the utility model devolatilization device is made up of stirring-type strap clamp cover insulating container A, metering-type pressure pump B, vacuum devolatilization machine C and material receiver D, metering-type pressure pump B connects insulating container A and vacuum devolatilization machine C, part has heating zone and cooling zone in this vacuum devolatilization machine C, and described material receiver D is connected with the cooling zone of vacuum devolatilization machine.Inner heating zone of described vacuum devolatilization machine C and cooling zone are distributed on the crawler belt C2, be connected with hot water at the coil pipe C3 between the aspect about the anterior crawler belt C2 of this vacuum devolatilization machine and form the heating zone, the coil pipe about this vacuum devolatilization machine rear portion crawler belt C2 between the aspect is connected with cold water and forms cooling zone C4.The anterior crawler belt C2 of vacuum devolatilization machine C top has a distributor C1 evenly material to be distributed on the crawler belt C2.Described vacuum devolatilization machine C introduces condenser E by outlet pipe in the top, and the other end top of described condenser E is communicated with the vacuum unit.Described material receiver D stirs cage by the recovering hopper of blank chopper, bottom and spiral discharging and forms, the material that downcuts is by stirring the pulverizer that cage is transported to vacuum devolatilization machine outside, material through pulverizing enters pipeline by a bottom screen cloth, and this pipeline links to each other with splice jug by a valve of opening.
With the polyvinylpyrrolidone is principle of work and the process that example is described the utility model vacuum devolatilization device, raw material: polyvinylpyrrolidone (PVP) K120 11% solution (Boai Xinkaiyuan Pharmacy stock Co., Ltd's production), viscosity: 7176mPa.s (@25 ℃ of Brookfield RVT Nian Duji, the 64# rotor, rotating speed 12rpm), K value: 122.Employed devolatilization method is as described below:
The first, PVP solution is pumped in the container A of the strap clamp cover insulation that can stir with closed conduit.
The second, PVP solution is pressed in the continuous vacuum devolatilization machine C with the speed of pressure pump according to 250kg/hr, solution is distributed on the crawler belt C2 of rotation uniformly by distributor C1.By the heating coil C3 in hot water heating crawler belt middle layer, the temperature of the temperature sensor of control crawler belt top is at 55 ℃～80 ℃, crawler belt gait of march 400cm/hr; Described devolatilization machine devolatilization aspect length overall is 7500mm, and last 1500mm is cooling section C4, and logical 0～5 ℃ cold water makes the dry good PVP of devolatilization lower the temperature in the coil pipe.The water vapor that is evaporated in the devolatilization machine is pulled out outdoor by the vacuum machine, be introduced into condenser E, and refrigerant temperature is that the distilled water that condensation is got off is collected in the special-purpose storage tank at 3 ℃～5 ℃.
When three, dry good PVP foamed thin sheet arrives the other end of devolatilization machine, be received the blank chopper (3 times/m) cutting-out of frequency of system, enter the receiving vat of bottom, by the spiral cage that stirs in the groove, be transplanted on the pulverizer of vacuum devolatilization machine outside, material is sent powder into splice jug by the material after pulverizing with end sieve (80 order).
When observing powder material in the splice jug and reach capacity state by the viewing window of splice jug, close the valve that connects pulverizer and splice jug, after the isolated vacuum system, splice jug is unloaded from body, and with the batch can of sky by after last, open vacuum valve, continue to receive powder material from pulverizer.
The above-mentioned Polyvinylpyrolidone (PVP) K120 powder that has obtained having better flowability, its fugitive constituent (moisture content) is less than 3%, the K value of powder is 120.4, variation is less than 2, after powder-product reverts to the liquid of 11% solid content, its viscosity is 7102mPa.s (@25 ℃ of Brookfield RVT Nian Duji, 64# rotor, rotating speed 12rpm).Therefore, obtained the ideal powder-product after the polymkeric substance devolatilization (drying).
The devolatilization device product processed that technical solutions of the utility model provide meets the GMP production standard of pharmaceutical raw material, foodstuff additive, cosmetic field fully, can be used for the production of the raw material or the product of these industries.
The utility model is not limited to the described scope of the foregoing description, and every technology distortion of doing according to the utility model all falls within the protection domain of the present utility model.
Claims (6)
1. devolatilization device that is used for soluble high molecular polymers, it is characterized in that: this devolatilization device is made up of stirring-type insulating container, metering-type pressure pump, vacuum devolatilization machine and material receiver, the metering-type pressure pump connects insulating container and vacuum devolatilization machine, part has heating zone and cooling zone in this vacuum devolatilization machine, and described material receiver is connected with the cooling zone of vacuum devolatilization machine.
2. the devolatilization device that is used for soluble high molecular polymers according to claim 1, it is characterized in that: inner heating zone of described vacuum devolatilization machine and cooling zone are distributed on the crawler belt, be connected with heating agent up and down between the aspect at the anterior crawler belt of this vacuum devolatilization machine and form the heating zone, be connected with refrigerant up and down between the aspect at this vacuum devolatilization machine rear portion crawler belt and form the cooling zone.
3. the devolatilization device that is used for soluble high molecular polymers according to claim 2 is characterized in that: there is a distributor the anterior crawler belt of described vacuum devolatilization machine top.
4. the devolatilization device that is used for soluble high molecular polymers according to claim 1 is characterized in that: described insulating container is a stirring-type strap clamp cover insulating container.
5. be used for the devolatilization device of soluble high molecular polymers according to described each of claim 1 to 4, it is characterized in that: condenser is introduced by outlet pipe in described vacuum devolatilization machine top, and the other end top of described condenser is communicated with the vacuum unit.
6. be used for the devolatilization device of soluble high molecular polymers according to described each of claim 1 to 4, it is characterized in that: described material receiver stirs cage by the recovering hopper of blank chopper, bottom and spiral discharging and forms, the material that downcuts is by stirring the pulverizer that cage is transported to vacuum devolatilization machine outside, material through pulverizing enters pipeline by a bottom screen cloth, and this pipeline links to each other with splice jug by a valve of opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202237548U CN201620117U (en) | 2009-09-25 | 2009-09-25 | Devolatilization device of soluble high molecular polymer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202237548U CN201620117U (en) | 2009-09-25 | 2009-09-25 | Devolatilization device of soluble high molecular polymer |
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| CN201620117U true CN201620117U (en) | 2010-11-03 |
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| CN2009202237548U Expired - Lifetime CN201620117U (en) | 2009-09-25 | 2009-09-25 | Devolatilization device of soluble high molecular polymer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693767B (en) * | 2009-09-25 | 2012-09-05 | 博爱新开源制药股份有限公司 | Devolatilization method of soluble high molecular polymers and device thereof |
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2009
- 2009-09-25 CN CN2009202237548U patent/CN201620117U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693767B (en) * | 2009-09-25 | 2012-09-05 | 博爱新开源制药股份有限公司 | Devolatilization method of soluble high molecular polymers and device thereof |
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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: 20101103 Effective date of abandoning: 20090925 |