CN202876388U - Spiral falling film evaporator for polymer polyol - Google Patents
Spiral falling film evaporator for polymer polyol Download PDFInfo
- Publication number
- CN202876388U CN202876388U CN 201220574200 CN201220574200U CN202876388U CN 202876388 U CN202876388 U CN 202876388U CN 201220574200 CN201220574200 CN 201220574200 CN 201220574200 U CN201220574200 U CN 201220574200U CN 202876388 U CN202876388 U CN 202876388U
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- CN
- China
- Prior art keywords
- tube
- mozzle
- heat exchanger
- polymer polyatomic
- polyatomic alcohol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a spiral falling film evaporator for polymer polyol, which comprises a heat exchange tube, a diversion tube, a vacuum pump and an upper tube header. A tube wall of the heat exchange tube is provided with a heating element, a discharge hole is arranged at the bottom of the heat exchange tube, and the diversion tube is located in the heat exchange tube; the space between the diversion tube and the heat exchange tube serves a gas-liquid separation chamber, the vacuum pump is communicated with the gas-liquid separation chamber through a pipeline, and the upper tube header is adjacent to a feeding port of the heat exchange tube; and the upper end of the diversion tube is connected with the bottom of the upper tube header, and the diversion tube is in a spiral type. The spiral falling film evaporator for polymer polyol can reduce the flow velocity of the polymer polyol flowing along the tube wall of the diversion tube, so that the polymer polyol has good concentration and viscosity after being treated by the falling film evaporator provided by the utility model.
Description
Technical field
The utility model relates to a kind of falling film evaporator, particularly a kind of helical falling-film evaporimeter for polymer polyatomic alcohol.
Background technology
Feed liquid is added from falling film evaporator heating clamber upper tube box, through liquid distribution and film formation device, is evenly distributed in each heat exchanger tube, gravity induce and airflow function under, become evenly membranaceous and flow from top to bottom.In the flow process, vaporized by the heat that the heat exchanger tube heat medium produces, the separation chamber that the steam that produces and liquid phase enter evaporimeter jointly, vapour-liquid is through fully separating, steam enters condenser condenses (single-action operation) or enters lower 1st effective evaporator as heat medium, thereby realize the multiple-effect operation, liquid phase is then discharged by the separation chamber.
Polymer polyatomic alcohol is for the preparation of high-mechanic or high-modulus is soft and the semi-hard polyurethane foam plastic goods.Polymer polyatomic alcohol, need to be processed it in order to obtain preferably concentration and viscosity as making the polyurethane foam plastics raw material through falling film evaporator, as much as possible bubble contained in the polymer polyatomic alcohol is taken off to the greatest extent.When existing straight pipe type falling film evaporator is processed polymer polyatomic alcohol, because existing straight pipe type falls, so polymer polyatomic alcohol is when flowing along mozzle, the speed that it flows, cause its interior contained bubble can't fully be taken off to the greatest extent, affect its concentration and viscosity.
Summary of the invention
For above-mentioned technical problem, the purpose of this utility model provides a kind of helical falling-film evaporimeter for polymer polyatomic alcohol, this practicality can reduce polymer polyatomic alcohol along the flowing velocity of mozzle tube wall, after polymer polyatomic alcohol is processed through falling film evaporator of the present utility model, have preferably concentration and viscosity.
The technical scheme that realizes the utility model purpose is as follows:
The helical falling-film evaporimeter that is used for polymer polyatomic alcohol, comprise heat exchanger tube, mozzle, vavuum pump and upper tube box, the tube wall of heat exchanger tube is provided with calandria, the bottom of heat exchanger tube is provided with discharging opening, and mozzle is arranged in heat exchanger tube, and the interval between mozzle and the heat exchanger tube becomes gas-liquid separation chamber, vavuum pump is communicated with gas-liquid separation chamber by pipeline, upper tube box is positioned near the charging port of heat exchanger tube, and the upper end of mozzle is connected with the bottom of upper tube box, and described mozzle is spiral mozzle.
Further, be provided with heat medium or heater in the mozzle.
Further, described heater is helical spring, and this helical spring is arranged on the internal face of mozzle in the shape of a spiral.
Further, described heat medium is steam.
Adopted such scheme, the utility model has adopted spiral helicine mozzle, polymer polyatomic alcohol is in the process that flows along mozzle, not only prolonged its path of flowing, and because the helical form effect of mozzle, so that the resistance on the drag size straight pipe type mozzle tube wall face that polymer polyatomic alcohol is subject in flow process, therefore, the flowing velocity of polymer polyatomic alcohol is minimized, swabbing action through abundant heating and vavuum pump, the gas that polymer polyatomic alcohol is come out is discharged to the outside of falling film evaporator, is beneficial to improve concentration and viscosity.
In addition, the utility model is by arranging heat medium or heater in mozzle, when polymer polyatomic alcohol is mobile along the tube wall of mozzle, heat on the tube wall is delivered to polymer polyatomic alcohol, because the heat that the calandria on the heat exchanger tube sends also can be delivered to polymer polyatomic alcohol, these polymer polyatomic alcohol two sides are heated, therefore, the utility model can carry out homogeneous heating to polymer polyatomic alcohol, thereby makes polymer polyatomic alcohol have preferably concentration and viscosity.
Description of drawings
Fig. 1 is the structural representation of the helical falling-film evaporimeter for polymer polyatomic alcohol of the present utility model;
In the accompanying drawing, 1 is heat exchanger tube, and 2 is mozzle, and 3 is vavuum pump, and 4 is upper tube box, and 5 is calandria, and 6 is discharging opening, and 7 is gas-liquid separation chamber, and 8 is helical spring.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
With reference to Fig. 1, the helical falling-film evaporimeter for polymer polyatomic alcohol of the present utility model comprises heat exchanger tube 1, mozzle 2, vavuum pump 3 and upper tube box 4.The tube wall of heat exchanger tube 1 is provided with calandria 5, and the heat that this calandria 5 sends distributes by the tube wall of heat exchanger tube 1, makes atmosphere with heat of heat exchanger tube 1 inner formation.The bottom of heat exchanger tube 1 is provided with discharging opening 6, and this discharging opening is used for will be through the polymer polyatomic alcohol output of heating.Mozzle 2 is arranged in heat exchanger tube 1, and mozzle 2 is fixed in the heat exchanger tube 1 by support, and is positioned at the middle part of heat exchanger tube.Interval between mozzle 2 and the heat exchanger tube 1 becomes gas-liquid separation chamber 7, and polymer polyatomic alcohol is in heating process, and its inner contained bubble or water is evaporated, and forms gas dispense in this gas-liquid separation chamber 7.Vavuum pump 3 is communicated with gas-liquid separation chamber by pipeline, and the gas that will be dispersed in the gas-liquid separation chamber 7 by vavuum pump 3 aspirates, so that critical in vacuum state in the gas-liquid separation chamber 7.Mozzle 2 is spiral mozzle.Polymer polyatomic alcohol is in the process that flows along mozzle, not only prolonged its path of flowing, and because the helical form effect of mozzle, so that the resistance on the drag size straight pipe type mozzle tube wall face that polymer polyatomic alcohol is subject in flow process, therefore, the flowing velocity of polymer polyatomic alcohol is minimized, through the swabbing action of abundant heating and vavuum pump, the gas that polymer polyatomic alcohol is come out is discharged to the outside of falling film evaporator, is beneficial to improve concentration and viscosity.Be provided with heat medium or heater in the mozzle 2.Heat medium is steam.Heater is helical spring, and this helical spring is arranged on the internal face of mozzle in the shape of a spiral, is preferably helical spring 8 in the present embodiment.Upper tube box 4 is positioned near the charging port of heat exchanger tube 1 and is positioned at the top of mozzle, upper tube box 4 is the casing that the end sealing other end has opening, after being input to continuously polymer polyatomic alcohol in the upper tube box 4, these polymer polyatomic alcohols overflow from the port of upper tube box 4 along with the increase of volume, under action of gravitation, tube wall surface current along upper tube box 4 is moving, then flows on the tube wall of moving mozzle.
Claims (4)
1. the helical falling-film evaporimeter that is used for polymer polyatomic alcohol, comprise heat exchanger tube, mozzle, vavuum pump and upper tube box, the tube wall of heat exchanger tube is provided with calandria, the bottom of heat exchanger tube is provided with discharging opening, mozzle is arranged in heat exchanger tube, interval between mozzle and the heat exchanger tube becomes gas-liquid separation chamber, vavuum pump is communicated with gas-liquid separation chamber by pipeline, upper tube box is positioned near the charging port of heat exchanger tube, the upper end of mozzle is connected with the bottom of upper tube box, it is characterized in that described mozzle is spiral mozzle.
2. the helical falling-film evaporimeter for polymer polyatomic alcohol according to claim 1 is characterized in that, is provided with heat medium or heater in the mozzle.
3. the helical falling-film evaporimeter for polymer polyatomic alcohol according to claim 2 is characterized in that, described heater is helical spring, and this helical spring is arranged on the internal face of mozzle in the shape of a spiral.
4. the helical falling-film evaporimeter for polymer polyatomic alcohol according to claim 2 is characterized in that, described heat medium is steam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574200 CN202876388U (en) | 2012-11-02 | 2012-11-02 | Spiral falling film evaporator for polymer polyol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220574200 CN202876388U (en) | 2012-11-02 | 2012-11-02 | Spiral falling film evaporator for polymer polyol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202876388U true CN202876388U (en) | 2013-04-17 |
Family
ID=48067855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220574200 Expired - Fee Related CN202876388U (en) | 2012-11-02 | 2012-11-02 | Spiral falling film evaporator for polymer polyol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202876388U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111825143A (en) * | 2020-06-01 | 2020-10-27 | 河北江水制药设备有限公司 | Energy-saving high-efficiency multi-effect water distiller |
-
2012
- 2012-11-02 CN CN 201220574200 patent/CN202876388U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111825143A (en) * | 2020-06-01 | 2020-10-27 | 河北江水制药设备有限公司 | Energy-saving high-efficiency multi-effect water distiller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151102 |
|
| EXPY | Termination of patent right or utility model |