CN220242081U - Polycarbonate powder drying system - Google Patents
Polycarbonate powder drying system Download PDFInfo
- Publication number
- CN220242081U CN220242081U CN202321982055.8U CN202321982055U CN220242081U CN 220242081 U CN220242081 U CN 220242081U CN 202321982055 U CN202321982055 U CN 202321982055U CN 220242081 U CN220242081 U CN 220242081U
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- China
- Prior art keywords
- drying equipment
- washing tower
- secondary drying
- air
- polycarbonate
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- 238000001035 drying Methods 0.000 title claims abstract description 103
- 229920000515 polycarbonate Polymers 0.000 title claims abstract description 42
- 239000004417 polycarbonate Substances 0.000 title claims abstract description 42
- 239000000843 powder Substances 0.000 title claims abstract description 28
- 238000005406 washing Methods 0.000 claims abstract description 38
- 238000011282 treatment Methods 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000000926 separation method Methods 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 12
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 239000012159 carrier gas Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000011221 initial treatment Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000643 oven drying Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to the technical field of drying equipment, in particular to a polycarbonate powder drying system which comprises primary drying equipment, secondary drying equipment, a washing tower and a heater; the feeding port of the primary drying equipment is used for adding the polycarbonate slurry with the drying treatment, and the discharging port of the primary drying equipment is connected with the feeding port of the secondary drying equipment; the exhaust ports of the primary drying equipment and the secondary drying equipment are connected with the air inlet of the washing tower; the discharge port of the secondary drying equipment is used for discharging the dried polycarbonate powder; the exhaust port of the washing tower inputs hot steam into the condenser through a first fan for tail gas treatment; and an air inlet of the heater is inflated with air or instrument wind, and an air outlet of the heater sends the heated air or instrument wind into the primary drying equipment and the secondary drying equipment to be used as a heating source. The system has the advantages of faster drying speed, lower energy consumption, better environmental protection and higher safety.
Description
Technical Field
The utility model relates to the technical field of drying equipment, in particular to a polycarbonate powder drying system.
Background
Polycarbonate (PC) is an important high polymer material, has the characteristics of high strength, high rigidity, high temperature resistance and the like, and is widely applied to the fields of electronics, automobiles, machinery and the like. In the production process of polycarbonate, the polycarbonate is required to be dried to remove water and organic solvents in the polycarbonate so as to ensure the quality and performance of the product. The conventional drying methods comprise nitrogen drying, vacuum drying, oven drying and the like, but the methods have the problems of low drying speed, high energy consumption, complex operation and the like.
Through searching, chinese patent with publication number of CN107685404B discloses a two-stage indirect drying system for carbonate high polymer, which comprises a blade dryer, a steam pipe dryer and an alkaline washing tower. The paddle dryer is provided with a feed inlet, a tail gas discharge port, a secondary drying tail gas input pipe, saturated steam input pipes I and II, steam condensate discharge pipes I and II and a drying material discharge port.
The above patent suffers from the following disadvantages: in the drying process of polycarbonate, problems of low drying speed, high energy consumption and complex operation exist, and in the traditional drying method, problems of environmental pollution, potential safety hazard and the like exist, so that a more efficient, environment-friendly and safe drying technology is needed to solve the problems. In view of this, we propose a polycarbonate powder drying system.
Disclosure of Invention
The present utility model is directed to a polycarbonate powder drying system for solving the above-mentioned problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a polycarbonate powder drying system comprises a primary drying device, a secondary drying device, a washing tower and a heater; the feeding port of the primary drying equipment is used for adding the polycarbonate slurry with the drying treatment, and the discharging port of the primary drying equipment is connected with the feeding port of the secondary drying equipment; the exhaust ports of the primary drying equipment and the secondary drying equipment are connected with the air inlet of the washing tower; the discharge port of the secondary drying equipment is used for discharging the dried polycarbonate powder; a water outlet of the washing tower discharges one part of the wastewater through a filter arranged on the water outlet of the washing tower to recycle water, and the other part of the wastewater flows back to the top of the washing tower to be used as spray water; the exhaust port of the washing tower inputs hot steam into the condenser through a first fan for tail gas treatment; and an air inlet of the heater is inflated with air or instrument wind, and an air outlet of the heater sends the heated air or instrument wind into the primary drying equipment and the secondary drying equipment to be used as a heating source.
Preferably, a separation mechanism for separating the waste gas from the polycarbonate particles is further arranged on a pipeline connected with the exhaust port of the secondary drying device and the air inlet of the washing tower; the separation mechanism includes: the cyclone separator is connected with an air outlet of the secondary drying equipment, the air outlet of the cyclone separator is connected with an air inlet of the fan II through the filter separator, and a particulate matter outlet at the bottom of the cyclone separator is connected with a feed inlet of the secondary drying equipment; and an exhaust port of the second fan is connected with an air inlet of the washing tower.
Preferably, the top of the washing tower is also connected with an external water pipe for water inflow as condensed water.
Preferably, the heater is used to heat air or meter wind to 110-140 ℃.
Preferably, the primary drying equipment is a paddle dryer; the secondary drying equipment is a paddle dryer or a rotary drum dryer.
Compared with the prior art, the utility model has the beneficial effects that:
1. the drying speed is higher, and the technical scheme adopts a mode of combining primary and secondary drying equipment, so that water and organic solvents in the polycarbonate powder can be removed more thoroughly, and the drying speed and the drying efficiency are improved;
2. the energy consumption is lower, and the utilization rate of the hot carrier gas is higher by adopting a mode of combining a paddle dryer with a rotary drum dryer, so that the energy consumption can be reduced;
3. the environmental protection is better, the solid powder and the organic solvent in the gas can be effectively separated and removed, and the pollution to the environment is reduced.
Thus, the polycarbonate powder drying system of the present utility model has a faster drying speed, lower energy consumption, better environmental protection and higher safety than the prior art.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
In the figure: 1. primary drying equipment; 2. a secondary drying device; 3. a washing tower; 4. a separation mechanism; 5. a cyclone separator; 6. a filtering separator; 7. a second fan; 8. a bottom pump; 9. a filter; 10. a first fan; 11. a condenser; 12. a heater.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.
As shown in fig. 1, the present utility model provides a polycarbonate powder drying system comprising a primary drying apparatus 1, a secondary drying apparatus 2, a washing tower 3, and a heater 12; specifically, the feed inlet of the primary drying equipment 1 is used for adding polycarbonate slurry with drying treatment, and the discharge outlet of the primary drying equipment 1 is connected with the feed inlet of the secondary drying equipment 2; the exhaust ports of the primary drying equipment 1 and the secondary drying equipment 2 are connected with the air inlet of the washing tower 3; the discharge port of the secondary drying equipment 2 is used for discharging the dried polycarbonate powder; a water outlet of the washing tower 3 discharges one part of the wastewater through a filter 9 arranged on the bottom of the tower through a pump 8, and the other part of the wastewater flows back to the top of the washing tower 3 to be used as spray water; the exhaust port of the washing tower 3 inputs hot steam into a condenser 11 through a first fan 10 for tail gas treatment; the air inlet of the heater 12 blows air or instrument wind, and the air outlet of the heater 12 sends the heated air or instrument wind into the primary drying device 1 and the secondary drying device 2 as a heating source.
Further, a separation mechanism 4 for separating the waste gas from the polycarbonate particles is further arranged on a pipeline of the secondary drying device 2, wherein the pipeline is connected with the air inlet of the washing tower 3; the separation mechanism 4 includes: the cyclone separator 5, the filter separator 6 and the fan II 7, wherein an air inlet of the cyclone separator 5 is connected with an air outlet of the secondary drying equipment 2, an air outlet of the cyclone separator 5 is connected with an air inlet of the fan II 7 through the filter separator 6, and a particulate matter outlet at the bottom of the cyclone separator 5 is connected with a feed inlet of the secondary drying equipment 2; the exhaust port of the second fan 7 is connected with the air inlet of the washing tower 3
It is worth to say that the top of the washing tower 3 is also connected with an external water pipe for water inflow as condensed water.
In addition, the heater 12 is used to heat air or meter wind to 110-140 ℃.
Specifically, the primary drying device 1 is a paddle dryer; the secondary drying device 2 is a paddle dryer or a drum dryer.
In the polycarbonate powder drying system, a paddle dryer is adopted as primary drying equipment 1, free water and methylene dichloride in the polycarbonate slurry are heated and volatilized in an accelerated manner through hot carrier gas (air or instrument wind), most of the water and methylene dichloride in the slurry are removed, so that the liquid content of the polycarbonate slurry after centrifugal separation is less than 10%, and the primary treatment of the polycarbonate slurry is completed to obtain polycarbonate powder; simultaneously, a paddle dryer or a drum dryer is adopted as secondary drying equipment 2, saturated water in the polycarbonate powder obtained after primary treatment is heated and volatilized in an accelerated manner through hot carrier gas (air or instrument wind), the polycarbonate powder is further dried, secondary treatment of polycarbonate slurry is realized, meanwhile, flash evaporation gas and water are sent into a washing tower 3 together through a flash evaporation dryer and a venturi ejector (not shown in the figure), the washing tower 3 is provided with a filler, solid powder in the washed gas is separated and deposited, the gas is introduced into a condenser 11 for cooling through a fan I10, and methylene dichloride is condensed and then sent into a subsequent tail gas treatment device for tail gas treatment; in addition, a separation mechanism 4 is arranged between the secondary drying equipment 2 and the washing tower 3, a cyclone separator 5 and a filter separator 6 are adopted to further remove larger particle powder carried in the gas, and the final gas enters the washing tower 3 for washing; one part of the washing water of the washing tower 3 flows back to the top of the washing tower 3 to be used as spray water, and the other part is filtered out of polycarbonate powder by a filter 9 and then enters a subsequent water treatment device for recycling; and the primary drying equipment 1 and the secondary drying equipment 2 heat air or instrument wind to 110-140 ℃ through the heater 12, and the air or instrument wind is taken as hot carrier gas to enter the dryer, so that the drying rate can be improved, the drying efficiency of drying the polycarbonate slurry into polycarbonate powder can be improved through the two-stage drying, and the pollution to the environment and the potential safety hazard are reduced.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. A polycarbonate powder drying system, which is characterized by comprising a primary drying device (1), a secondary drying device (2), a washing tower (3) and a heater (12);
the feeding port of the primary drying equipment (1) is used for adding the polycarbonate slurry with the drying treatment, and the discharging port of the primary drying equipment (1) is connected with the feeding port of the secondary drying equipment (2);
the exhaust ports of the primary drying equipment (1) and the secondary drying equipment (2) are connected with the air inlet of the washing tower (3); the discharge port of the secondary drying equipment (2) is used for discharging the dried polycarbonate powder;
a water outlet of the washing tower (3) discharges a part of the wastewater through a filter (9) arranged on the water outlet through a tower bottom pump (8), and the other part of the wastewater flows back to the top of the washing tower (3) to be used as spray water;
the exhaust port of the washing tower (3) inputs hot steam into a condenser (11) through a first fan (10) for tail gas treatment;
the air inlet of the heater (12) blows air or instrument wind, and the air outlet of the heater (12) sends the heated air or instrument wind into the primary drying equipment (1) and the secondary drying equipment (2) to be used as heating sources.
2. The polycarbonate powder drying system according to claim 1, wherein a separation mechanism (4) for separating the polycarbonate particles from the exhaust gas is further provided on a pipe connecting the exhaust port of the secondary drying apparatus (2) with the air inlet of the washing tower (3); the separation mechanism (4) comprises: the cyclone separator (5), the filtering separator (6) and the fan II (7), wherein an air inlet of the cyclone separator (5) is connected with an air outlet of the secondary drying equipment (2), the air outlet of the cyclone separator (5) is connected with an air inlet of the fan II (7) through the filtering separator (6), and a particulate matter outlet at the bottom of the cyclone separator (5) is connected with a feed inlet of the secondary drying equipment (2); and an exhaust port of the second fan (7) is connected with an air inlet of the washing tower (3).
3. The polycarbonate powder drying system according to claim 1, wherein the top of the washing tower (3) is further connected with an external water pipe for water inflow as condensed water.
4. The polycarbonate powder drying system according to claim 1, wherein the heater (12) is for heating air or instrument wind to 110-140 ℃.
5. The polycarbonate powder drying system according to any one of claims 1 to 4, wherein the primary drying apparatus (1) is a paddle dryer;
the secondary drying equipment (2) is a blade dryer or a rotary drum dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321982055.8U CN220242081U (en) | 2023-07-26 | 2023-07-26 | Polycarbonate powder drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321982055.8U CN220242081U (en) | 2023-07-26 | 2023-07-26 | Polycarbonate powder drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220242081U true CN220242081U (en) | 2023-12-26 |
Family
ID=89233981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321982055.8U Active CN220242081U (en) | 2023-07-26 | 2023-07-26 | Polycarbonate powder drying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220242081U (en) |
-
2023
- 2023-07-26 CN CN202321982055.8U patent/CN220242081U/en active Active
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