CN203291535U - Ultrasonic evaporator - Google Patents
Ultrasonic evaporator Download PDFInfo
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- CN203291535U CN203291535U CN2013203515212U CN201320351521U CN203291535U CN 203291535 U CN203291535 U CN 203291535U CN 2013203515212 U CN2013203515212 U CN 2013203515212U CN 201320351521 U CN201320351521 U CN 201320351521U CN 203291535 U CN203291535 U CN 203291535U
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Abstract
The utility model relates to an ultrasonic evaporator comprising a housing composed of a lower tube box, an evaporation chamber, a tube shell and an upper tube box. An upper tube board and a lower tube board are welded in the tube shell. A heat exchange tube group passes between the upper tube board and the lower tube board in a fixedly connected manner. A central circulating tube is fixed in the middle of the heat exchange tubes. The tube shell is provided with a heating medium inlet and a heating medium outlet as well as a liquid inlet in the upper portion of the central circulating tube. The top of the upper tube box is provided with a gas outlet. The bottom of the lower tube box is provided with a discharge hole. The ultrasonic evaporator is characterized in that a support is fixed in the lower tube box and an ultrasonic transducer is fixedly installed on the support. The ultrasonic evaporator is scientific and reasonable in structural design and effective in preventing and removing accumulated scale and avoiding short circuit, thus production capacity and evaporation intensity are increased; the ultrasonic evaporator is highly innovative.
Description
Technical field
The utility model belongs to the evaporimeter field, particularly a kind of ultrasonic vaporising device.
Background technology
Calandria type evaporator has the advantages such as compact conformation, easily manufactured, operation is reliable, and is very extensive in industrial application, and the title of " standard pan " is arranged.The heating clamber of calandria type evaporator is comprised of one group of upright tube bank, and a thicker central circulating tube is installed by central authorities in tube bank.During operation, in tube bank, the heating surface area of unit volume solution is greater than the heating surface area in central circulating tube, be that the former is heated, the solution vaporization is many, therefore the solution air content in tube bank is many, cause the solution in the density ratio central circulating tube little, this density contrast impels solution to do along mesotube decline and along restraining the shuttling movement that rises.
Due to structural restriction, the circulation rate of calandria type evaporator is lower, generally below 0.4m/s-0.5m/s but in fact; And, because solution constantly circulates, make the solution composition in tube bank approach all the time the composition of completing liquid, thereby the viscosity of solution is large, boiling point is high, effective temperature difference reduces, easily produce fouling.In addition, the cleaning of equipment and maintenance are also convenient not.Therefore, it is not serious that existing calandria type evaporator is applicable to Steaming structure, and the less solution of a small amount of crystallization and corrosivity is arranged, and the scope of application is less.
And in existing calandria type evaporator, central circulating tube flushes with upper face plate.In operating process,, because the operation liquid level is too high, cause the overheated evaporated liquor of part also not arrive the complete flash distillation of liquid level, namely with the stream of the decline liquid in central circulating tube together, participated in circulation next time.This just makes heating tube import department liquid level raise, thereby has reduced the heat transfer effective temperature difference.And cause " short circuit phenomenon ".The appearance of " short circuit phenomenon ", make temperature difference loss serious, even can consume the very considerable driving force of heat transfer of ratio.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of incrustation that prevents and remove is provided, and avoids short circuit phenomenon, thereby improves the ultrasonic vaporising device of production capacity and evaporation intensity.
The utility model solves its technical problem and is achieved through the following technical solutions:
a kind of ultrasonic vaporising device, comprise by lower tube box, shell, the shell that upper tube box forms, weld upper perforated plate in shell, lower perforated plate, install and be fixedly connected with one group of heat exchanger tube between upper perforated plate and lower perforated plate, medium position at this group of heat exchanger tube is fixedly mounted with central circulating tube, heat medium import and heat medium outlet are set on shell, the inlet that is positioned at central circulating tube top is set on shell, the top of upper tube box is shaped with exhaust outlet, the bottom of lower tube box is shaped with discharging opening, it is characterized in that: be fixedly mounted with a support in lower tube box, be installed with ultrasonic transducer on this support.
And described central circulating tube top is than the high 2-20cm in the top of heat exchanger tube.
And described ultrasonic transducer consists of one group of compound bar PZT (piezoelectric transducer).
Advantage of the present utility model and beneficial effect are:
1. ultrasonic vaporising device of the present utility model, the ultrasonic wave of its ultrasonic transducer generating constantly contacts with the evaporated liquor of Natural Circulation, thereby make evaporated liquor under hyperacoustic effect, produce ultrasonic cavitation in heating tube, liquid surface produces ultrasonic atomizatio in vaporization chamber.Greatly improved disengagement area, turbulivity, Pressure Drop and steam rate of volatilization.Can make evaporated liquor at a lower temperature, complete fast evaporation within a short period of time.Reduce simultaneously the surface tension of evaporated liquor, reduced nucleation barrier, promoted the energy exchange of solution inside, increased the vaporization nucleation probability, improved heat exchange efficiency.
2. ultrasonic vaporising device of the present utility model, its ultrasonic wave for fouling in heating clamber prevent and removal has a significant effect, thereby further increase heat transfer coefficient, the liquid evaporation process is strengthened.Can obtain higher cocnentration factor at single-effect evaporation system, for thermal sensitivity weak solution material concentrated provides a comparatively suitable approach.
3. scientific structure design of the present utility model is reasonable, can effectively prevent and remove incrustation, avoids short circuit phenomenon, thereby improves production capacity and evaporation intensity, is a kind of ultrasonic vaporising device with higher innovation.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Description of drawings:
1-lower tube box, 2-support, 3-ultrasonic transducer, the outlet of 4-heat medium, 5-lower perforated plate, 6-shell, the import of 7-heat medium, 8-central circulating tube, 9-vaporization chamber, 10-demister, 11-exhaust outlet, 12-upper tube box, 13-inlet, 14-upper perforated plate, 15-heat exchanger tube, 16-discharging opening.
The specific embodiment
The utility model is described in further detail below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of ultrasonic vaporising device, comprise the vertical cylindrical shell that is welded to form by lower tube box 1, shell 6, upper tube box 12.Install and be fixedly connected with one group of heat exchanger tube 15 between top in shell and bottom welding upper perforated plate 14 and lower perforated plate 5, upper perforated plate and lower perforated plate, at the middle part of heat exchanger tube, be fixedly mounted with central circulating tube 8.Heat exchanger tube and upper perforated plate, lower perforated plate adopt welding or expanded joint to be sealed and matched, and heat exchanger tube is parallel to each other and along the short transverse of evaporimeter, arranges, the upper and lower port of every heat exchanger tube respectively with the internal run-through of vaporization chamber 9, lower tube box.Heat-exchanging tube bundle outer with upper perforated plate, lower perforated plate, shell between form the shell side space of heat medium walking, the heat medium import 7 and the heat medium that communicate with the shell side space are set on shell export 4.The inlet 13 that is positioned at central circulating tube top is set on shell, the top of upper tube box is shaped with exhaust outlet 11, and the bottom of lower tube box is shaped with discharging opening 16.Be provided with demister 10 in upper tube box.
The innovation of this ultrasonic vaporising device is: be fixedly mounted with a support 2 in lower tube box, fixed installation ultrasonic transducer 3 on this support.Transducer, by a plurality of compound bar PZT (piezoelectric transducer)s, is formed in parallel through the bonding support of bonding agent.The central circulating tube top is than the high 2-20cm in the top of heat exchanger tube.
The operation principle of this ultrasonic vaporising device is:
Need concentrated liquid constantly from inlet, directly to enter central circulating tube, with the ultrasonic transducer of below, contact, then evaporated liquor enters heat exchanger tube and mobile to the vaporization chamber direction on top from lower tube box.And heat medium enters from the heat medium import of shell, liquid in the exchange heat pipe heats, in this process, partially liq changes into steam, steam drives liquid by density contrast and upwards flows, after entering vaporization chamber inside, through demister, steam is discharged from the outlet at upper tube box top, in heat exchanger tube in the liquid of bubbles and central circulating tube not the liquid of bubbles owing to there being density contrast, it, automatically from the dirty lower tube box that enters in central circulating tube,, then along the heat exchanger tube upper reaches, forms continuous natural circulation under the effect of gravity.
Because the ultrasonic wave of ultrasonic transducer generating constantly contacts with the evaporated liquor of Natural Circulation, thereby make evaporated liquor under hyperacoustic effect, produce ultrasonic cavitation in heating tube, in vaporization chamber, liquid surface produces ultrasonic atomizatio.Compared with prior art, greatly improved disengagement area, turbulivity, Pressure Drop and steam rate of volatilization.Can make evaporated liquor at a lower temperature, complete fast evaporation within a short period of time.Reduce simultaneously the surface tension of evaporated liquor, reduced nucleation barrier, promoted the energy exchange of solution inside, increased the vaporization nucleation probability, improved heat exchange efficiency.
In evaporimeter,, because of the hydrostatic pressure of fluid column, make the forehead elevation of boiling point of liquid below.Solution after heating tube is heated for the solution boiling point at vaporization chamber liquid level place, is to be superheat state.This crosses in the hot solution uphill process, and because the feed liquid static pressure constantly reduces and progressively flash distillation, its temperature constantly descends.Feed liquid must reach liquid level, and the ability flash distillation is complete, and temperature just can drop to the evaporated liquor boiling point suitable with vaporization chamber pressure.In traditional standard evaporator,, because central circulating tube flushes with upper perforated plate,, if the operation liquid level is too high, will there is the overheated feed liquid of part also not reach the complete flash distillation of liquid level, namely with the stream of the decline liquid in central circulating tube together, participated in circulation next time.This just makes heating tube import department feed temperature rise, thereby has reduced the heat transfer effective temperature difference." short-circuit cycle " phenomenon in Here it is evaporimeter.For standard pan, reducing the way of short circuit phenomenon will stretch on central circulating tube exactly, simultaneously under the ultrasonic wave of ultrasonic transducer generating, evaporated liquor produces cavitation phenomenon, make evaporated liquor accelerate turbulence, and can effectively prevent the generation of spiral free vortex, thereby make overheated feed liquid more effectively reach liquid level, complete flash distillation, avoid the generation of " short-circuit cycle " phenomenon.
Ultrasonic wave for fouling in heating clamber prevent and removal has a significant effect, thereby increase heat transfer coefficient, the liquid evaporation process is strengthened.Can obtain higher cocnentration factor at single-effect evaporation system, for thermal sensitivity weak solution material concentrated provides a comparatively suitable approach.
Although disclose for the purpose of illustration embodiment of the present utility model and accompanying drawing, but it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from the utility model and claims, various replacements, variation and modification are all possible, therefore, scope of the present utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (3)
1. ultrasonic vaporising device, comprise by lower tube box, shell, the shell that upper tube box forms, weld upper perforated plate in shell, lower perforated plate, install and be fixedly connected with one group of heat exchanger tube between upper perforated plate and lower perforated plate, medium position at this group of heat exchanger tube is fixedly mounted with central circulating tube, heat medium import and heat medium outlet are set on shell, the inlet that is positioned at central circulating tube top is set on shell, the top of upper tube box is shaped with exhaust outlet, the bottom of lower tube box is shaped with discharging opening, it is characterized in that: be fixedly mounted with a support in lower tube box, be installed with ultrasonic transducer on this support.
2. ultrasonic vaporising device according to claim 1, it is characterized in that: described central circulating tube top is than the high 2-20cm in the top of heat exchanger tube.
3. ultrasonic vaporising device according to claim 1, it is characterized in that: described ultrasonic transducer consists of one group of compound bar PZT (piezoelectric transducer).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203515212U CN203291535U (en) | 2013-06-18 | 2013-06-18 | Ultrasonic evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203515212U CN203291535U (en) | 2013-06-18 | 2013-06-18 | Ultrasonic evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203291535U true CN203291535U (en) | 2013-11-20 |
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ID=49567576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203515212U Withdrawn - After Issue CN203291535U (en) | 2013-06-18 | 2013-06-18 | Ultrasonic evaporator |
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| Country | Link |
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| CN (1) | CN203291535U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331025A (en) * | 2013-06-18 | 2013-10-02 | 天津科技大学 | Ultrasonic evaporator |
| CN107398089A (en) * | 2016-09-18 | 2017-11-28 | 宁波工程学院 | The styrene-acrylic emulsion defoamed based on static mixer and ultrasonic wave takes off single device and technique |
| CN112870743A (en) * | 2021-02-03 | 2021-06-01 | 陈敏 | Central circulation tubular evaporator for chemical industry production |
-
2013
- 2013-06-18 CN CN2013203515212U patent/CN203291535U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103331025A (en) * | 2013-06-18 | 2013-10-02 | 天津科技大学 | Ultrasonic evaporator |
| CN107398089A (en) * | 2016-09-18 | 2017-11-28 | 宁波工程学院 | The styrene-acrylic emulsion defoamed based on static mixer and ultrasonic wave takes off single device and technique |
| CN107398089B (en) * | 2016-09-18 | 2023-01-10 | 宁波工程学院 | Styrene-acrylic emulsion demonomerization device and process based on static mixer and ultrasonic defoaming |
| CN112870743A (en) * | 2021-02-03 | 2021-06-01 | 陈敏 | Central circulation tubular evaporator for chemical industry production |
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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: 20131120 Effective date of abandoning: 20190308 |
|
| AV01 | Patent right actively abandoned |