CN202006030U - Vacuum spray decompression evaporator - Google Patents
Vacuum spray decompression evaporator Download PDFInfo
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- CN202006030U CN202006030U CN2010206590758U CN201020659075U CN202006030U CN 202006030 U CN202006030 U CN 202006030U CN 2010206590758 U CN2010206590758 U CN 2010206590758U CN 201020659075 U CN201020659075 U CN 201020659075U CN 202006030 U CN202006030 U CN 202006030U
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Abstract
The utility model discloses a vacuum spray decompression evaporator, which comprises an evaporator cylinder, an evaporation chamber arranged at the upper part of the evaporator cylinder, and a heating chamber arranged at the lower part of the evaporator cylinder. The vacuum spray decompression evaporator is characterized in that the heating chamber consists of vertical tube bundles of heat exchange tubes with small calibers and good heat conductivity; a central circulating tube with a large diameter is arranged in the middle of the vertical tube bundles; the heating chamber comprises a material liquid feeding and discharging port and an air tube entry which are arranged at the bottom of the heating chamber; an air tube penetrates through a stuffing layer along the axial line of the central circulating tube of the heating chamber and leads to the evaporation chamber; and an air tube exit is provided with an air jet-flow spray head. Through the large atmospheric difference between the inside and the outside of the vacuum evaporator, by adopting the principle of an air ejector, high-speed air currents are used to extract and spray evaporated solutions, the sprayed solutions are spread onto stuffing through a reflecting plate, so as to increase the area of an evaporated liquid film and the evaporation efficiency. The central circulating tube is made of material with the coefficient of heat conductivity much smaller than that of the heat exchange tubes, and the self-circulation of the material liquid in the heating chamber is realized through the density difference between the materials in the central circulating tube and the heat exchange tubes, so that the heat exchange efficiency is improved.
Description
Technical field
The invention provides a kind of bigger draught head inside and outside the cold boiler that utilizes, realization evaporating liquid spray, the decompression evaporator of solution self-loopa in the evaporimeter, this do not have outer loop mechanism and realize that the spray of solution and the decompression evaporator of self-loopa are particularly suitable for utilizing low-grade heat source to come evaporation and concentration chemical industry weak solution.
Background technology
Traditional evaporimeter improves evaporation efficiency for increasing the liquid film area that is evaporated the liquid material, rises various ways such as membrane type, falling film type, stirring diaphragm type and centrifugal thin-film formula.These evaporimeters in many styles respectively have shortcoming, or are not suitable for utilizing low-grade heat source to come evaporation and concentration chemical industry weak solution, or equipment complexity and cost are higher.
The heating clamber of film-rising evaporator is made up of one or several vertical long tube.Enter in the heater tube by base of evaporator after being evaporated the preheating of material liquid, heating steam the pipe outside with the material in the heat transferred pipe.Boiling vaporization after material liquid is heated generates indirect steam and rises at a high speed in pipe, drives feed liquid and upwards flows along pipe, become membranaceous at inwall, and carburation by evaporation constantly, quicken to flow, gas-liquid mixture separates after entering separator, and the liquid of finishing after concentrating is emitted by the separator bottom.This evaporimeter is not suitable for adopting low-temperature heat source.Scraper-type and agitating film evaporator all are to utilize rotation at a high speed that liquid distribution is become homogeneous film and a kind of evaporation equipment of evaporating or distilling.Though the heater of this evaporimeter can adopt low-temperature heat source its vaporization chamber need to seal, the anticorrosion and mechanical device of rotation at a high speed, manufacturing technology is complicated, manufacturing cost and equipment maintenance cost are higher.
Existing standard evaporator is called evaporator with central downcomer again, its heating clamber is less by caliber, the vertical tube bundle that is called heat exchanger tube is formed, there is a central circulating tube that diameter is very big the centre, because central circulating tube is bigger, the heat-transfer area that its unit volume solution occupies, than unit solution in the boiling tube occupied little, so the density of the liquid-vapor mixture in the heat exchanger tube is littler than the density of solution in the central circulating tube, the swabbing action that makes progress of rising steam in the heat exchanger tube can make the solution formation in the evaporimeter be descended by central circulating tube in addition, by circulating that boiling tube rises.This ringing helps the raising of the heat-transfer effect in the evaporimeter.But because central circulating tube and heat exchanger tube are made by coefficient of heat conduction identical materials, the temperature difference of two kinds of interior solution of pipe is limited, and this is the common drawback of traditional self-circulation type evaporimeter.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of very big draught head inside and outside the cold boiler that utilizes, adopt the ejector principle, be evaporated material liquid on filler with what high velocity air suction and spray seethed with excitement, increase the liquid film area of evaporation, improve the method for evaporation efficiency.
The utility model evaporimeter is in order to improve the thermal efficiency of tubular heat exchanger, strengthen the self-loopa effect of central circulating tube, central circulating tube adopts the coefficient of heat conduction material littler tens times than heat exchanger tube to make, make feed liquid density contrast increase in two kinds, help the raising of heat-transfer effect in the heating clamber.
The technical scheme that the utility model adopts in order to solve the problems of the technologies described above provides a kind of vacuum spraying evaporator, comprise an evaporimeter cylinder, be located at the vaporization chamber on top, the heating clamber of bottom, wherein, be provided with the air-spray device in the vaporization chamber, filler and reflecting plate, described heating clamber is less by caliber, the vertical tube bundle of the heat exchanger tube that heat conductivility is good is formed, there is a central circulating tube that diameter is very big the centre, heating clamber comprises the material liquid feed inlet and outlet and the air hose import of bottom, air hose passes the packing layer of vaporization chamber along the axis of heating clamber central circulating tube, the outlet of air hose top is connected with the air-spray device, air-spray device top is provided with reflecting plate, and the sidewall of heating clamber cylindrical shell is provided with heat medium import and outlet.
Described vacuum spray decompression evaporator, wherein, described evaporator tube, filler, reflecting plate, air hose, air-spray device, central circulating tube and heat exchanger tube select for use resistant material to make.
Described vacuum spray decompression evaporator, wherein, described evaporator tube, filler, reflecting plate, air-spray device and central circulating tube select for use the polypropylene plastics material to make, and air hose and heat exchanger tube adopt graphite modified polypropylene plastics to make.
Described vacuum spray decompression evaporator, wherein, the air intlet of the material liquid import of heating clamber, the outlet of material liquid and air hose is located at the heating clamber bottom.The mouth spray of described air-spray device is positioned on the filler, under the reflecting plate, its liquid sucting port is positioned under the filler.
Described vacuum spray decompression evaporator, wherein, vaporization chamber is two cylindrical shells that diameter is identical with heating clamber, the vaporization chamber of being located at top is connected up and down by flange with the heating clamber of being located at the bottom.
In the evaporation process,, replenish weak solution to heating clamber,, be immersed under the material liquid liquid level with the liquid sucting port that keeps the air-spray device to keep material liquid surface in fixing liquid level scope by fluid level controller along with material solution is concentrated because of evaporating constantly.When material solution reached the concentration requirement that needs in evaporimeter, with the whole emptying of material, the material liquid that reinjects rare restarted the evaporation and concentration flow process of next round.
The advantage that the utility model vacuum spray decompression evaporator is compared traditional decompression evaporator is:
1. the heat transfer coefficient of central circulating tube material is more much smaller than the heat exchanger tube, so material liquid density bigger than in the heat exchanger tube in the central circulating tube helps self-loopa effect and the heat-transfer effect of material liquid in heating clamber.
2. utilize the inside and outside draught head of cold boiler to realize being evaporated the spray of solution, form bigger liquid film area, can carry out the low-temperature evaporation of solution effectively.
3. vacuum spray decompression evaporator is simple in structure, cheap, does not need complicated supporting machinery equipment, helps reducing plant maintenance and operating cost.
Description of drawings
Below in conjunction with the drawings and specific embodiments explanation the features and advantages of the present invention, wherein:
Fig. 1 is a vacuum spray decompression evaporator structural representation of the present invention.
Fig. 2 is the structural representation of vacuum spray decompression evaporator vacuum jet device of the present invention.
Fig. 3 is the structural representation that an example of vacuum spray decompression evaporator of the present invention is used.
The specific embodiment
Fig. 1 is a vacuum spray decompression evaporator schematic diagram of the present invention.See also shown in Figure 1ly, vacuum of the present invention spray decompression evaporator 100 comprises a columniform vaporization chamber cylindrical shell 1 and the heating clamber 2 that is connected its underpart.Wherein, there is a conical top vaporization chamber top, links to each other with vertical chimney breast.The unsettled reflecting plate 3 that is provided with of central authorities in the vaporization chamber, there are air ejector 4 and filler 10 in the reflecting plate below.In the present embodiment, vaporization chamber cylindrical shell 1, heating clamber 2, conical top and chimney breast, reflecting plate 3, filler 10 and air-spray device select for use polypropylene plastics preferable, it both be applicable to various severe corrosive solution evaporation and concentration, can tolerate higher temperature, have again the insulation energy efficient effect.Certainly also has similar effects such as materials such as stainless steel, polyvinyl chloride.
Fig. 2 is the structural representation of air-spray device 4.Air-spray device 4 is made up of outer tube 6 and air hose 5, leaves the gap between the tube wall that is nested, and the lower end circular opening in gap is a liquid sucting port, and the upper end circular opening is a mouth spray.The bottom tail end of air hose 5 is connected with the air intlet of heating clamber bottom, and communicates with atmosphere by control valve 12, and air hose 5 adopts the good stone mill modified polypropylene plastic of heat conductivility preferable, and it can play the pre-warmed effect of air.During vacuum evaporation, if control valve 12 is opened, then the inside and outside huge air pressure official post outdoor air of vaporization chamber passes through the mouth spray of air hose 5 fast flow speed and direction room air ejectors 4, under the air-flow effect, material liquid is sucked from suction inlet, and reflecting plate direction upward ejects, and the effect by reflecting plate dispenses the solution that sprays on the filler of below.
The cylindrical shell of heating clamber 2 up and down two ends respectively be provided with a circle send out plate 13a and 13b blue, be used to install heat conductivility good heat exchanger tube 11 and central circulating tube 8, in this case enforcement case, these two the last lower houses of sending out plate blue and be the vaporization chamber 1 that is used to be connected and fixed the top, be again the support of fixed installation heat exchanger tube 11 and central circulating tube 8, these two flange plates can will add hot water and the mutual closed container of isolating of material liquid phase with heat exchanger tube 11, heating clamber cylindrical shell 2 and central circulating tube 8 formations simultaneously; Owing to the thermal convection current effect of fluid, material liquid can rise from base of evaporator by inlet 9 and heat exchanger tube 11 enter vaporization chamber 1 during heating, returns downwards from central circulating tube 8 then and flows to base of evaporator formation thermal cycle backflow.Adding hot water can enter heating clamber 2 by water inlet 7a, and flows out from delivery port 7b.The heat that adds hot water is transmitted to material liquid by heat exchanger tube 8.Heat exchanger tube 11 adopts graphite modified polypropylene plastics, and it plays and isolates heating working medium and material liquid, and the double action of between conduction heat.
Evaporimeter of the present invention is for realizing the Natural Circulation effect, improve the heat-transfer effect in the evaporimeter, heating clamber 2 is made up of the vertical tube bundle of the strong stone mill modified polypropene pipe 11 of the capacity of heat transmission, there is a central circulating tube 8 that diameter is very big the centre, is called heat exchanger tube around the less stone mill modified polypropene pipe of many calibers around it.Because the bore of central circulating tube 8 is bigger, and adopt the virgin pp material of poor thermal conductivity to make, the heat transfer effect of its unit volume solution, much smaller than unit solution in the heat exchanger tube 11, be that central circulating tube 8 is different with solution heating degree in the heat exchanger tube 11, thereby the density of the liquid-vapor mixture in the heat exchanger tube is littler than the density of solution in the central circulating tube, the swabbing action that makes progress of solution rising steam in the heat exchanger tube can make the solution in the evaporimeter form by central circulating tube decline, by circulating that heat exchanger tube rises in addition.This circulation mainly is that the density contrast by solution causes, so be called Natural Circulation.This effect helps the raising of the heat-transfer effect in the evaporimeter.
In the case of the present invention, heating clamber 2, send out plate 13a blue and 13b all adopts polypropylene plastics to make.
Fig. 3 is the structural representation that an example of the utility model vacuum spray decompression evaporator is used.The chimney 23 of evaporimeter 100 links to each other with condenser 200 by flange among Fig. 2, the heat medium import 7a of evaporimeter 100 links to each other with heating source 500 with heat medium outlet 7b, in evaporimeter, get under the condition for negative pressure, discharging valve 21 is closed, when charging valve 22 is opened, evaporimeter 100 is by feed inlet and outlet 9 charging valves 22, by negative pressure the material solution in the reservoir is sucked in the evaporimeter, concentrate when reaching the requiring of expection when being evaporated solution concentration, recover in the evaporimeter internal pressure also can pass through feed inlet and outlet 9 under the situation of normal pressure, close charging valve 22, the solution of opening after vent valves 21 will concentrate is discharged into stock chest 400.
Should use in the example, air valve 12 adopts controls magnetic valve automatically, and during work, magnetic valve interruption periodicity opens and closes and realizes solution impulse jet in the evaporimeter, the moistening degree of being of filler maintenance that sprayed with quilt the cycle time of injection.
Claims (6)
1. vacuum sprays decompression evaporator, comprise an evaporator tube, be located at the vaporization chamber on top, the heating clamber of bottom, wherein, be provided with the air-spray device in the vaporization chamber, filler and reflecting plate, described heating clamber is less by caliber, the vertical tube bundle of the heat exchanger tube that heat conductivility is good is formed, there is a central circulating tube that diameter is bigger the centre, heating clamber comprises the material liquid feed inlet and outlet and the air hose import of bottom, air hose passes the packing layer of vaporization chamber along the axis of heating clamber central circulating tube, the outlet of air hose top is connected with the air-spray device, and the mouth spray top of air-spray device is provided with reflecting plate, and the sidewall of heating clamber cylindrical shell is provided with heat medium import and outlet.
2. vacuum as claimed in claim 1 spray decompression evaporator is characterized in that described evaporator tube, filler, air hose, air-spray device, reflecting plate, heat exchanger tube, central circulating tube all made by resistant material.
3. vacuum as claimed in claim 1 or 2 spray decompression evaporator is characterized in that described evaporator tube, filler, air-spray device, reflecting plate, central circulating tube made by polypropylene plastics.
4. vacuum as claimed in claim 1 or 2 spray decompression evaporator is characterized in that described air hose, heat exchanger tube made by graphite modified polypropylene plastics.
5. vacuum spray decompression evaporator as claimed in claim 1 is characterized in that described central circulating tube adopts the capacity of heat transmission material littler than heat exchanger tube to make.
6. vacuum spray decompression evaporator as claimed in claim 1 is characterized in that described air-spray device is positioned under the reflecting plate, and its mouth spray is positioned on the filler, its liquid sucting port is positioned under the filler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206590758U CN202006030U (en) | 2010-12-13 | 2010-12-13 | Vacuum spray decompression evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206590758U CN202006030U (en) | 2010-12-13 | 2010-12-13 | Vacuum spray decompression evaporator |
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| CN202006030U true CN202006030U (en) | 2011-10-12 |
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| CN2010206590758U Expired - Fee Related CN202006030U (en) | 2010-12-13 | 2010-12-13 | Vacuum spray decompression evaporator |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861446A (en) * | 2012-09-18 | 2013-01-09 | 浙江温兄机械阀业有限公司 | Internal-circulation heating device |
| CN103331025A (en) * | 2013-06-18 | 2013-10-02 | 天津科技大学 | Ultrasonic evaporator |
| CN104043257A (en) * | 2014-06-23 | 2014-09-17 | 安徽四汇机械集团有限公司 | Novel waste heat/live steam composite evaporator |
| CN104843921A (en) * | 2015-04-30 | 2015-08-19 | 北京朗新明环保科技有限公司南京分公司 | Low temperature evaporation type high-salinity wastewater treatment device |
| CN105858764A (en) * | 2016-05-26 | 2016-08-17 | 北京科清环保科技有限公司 | Evaporating treatment system and treatment method for high-salinity waste water |
| CN108662802A (en) * | 2017-03-27 | 2018-10-16 | 吴巧魁 | Green heat pump refrigerating heating system, refrigerating and heating method and air-conditioning |
| CN113144644A (en) * | 2021-04-02 | 2021-07-23 | 广西顺风钛业有限公司 | Titanium dioxide concentration process |
-
2010
- 2010-12-13 CN CN2010206590758U patent/CN202006030U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102861446A (en) * | 2012-09-18 | 2013-01-09 | 浙江温兄机械阀业有限公司 | Internal-circulation heating device |
| CN103331025A (en) * | 2013-06-18 | 2013-10-02 | 天津科技大学 | Ultrasonic evaporator |
| CN104043257A (en) * | 2014-06-23 | 2014-09-17 | 安徽四汇机械集团有限公司 | Novel waste heat/live steam composite evaporator |
| CN104843921A (en) * | 2015-04-30 | 2015-08-19 | 北京朗新明环保科技有限公司南京分公司 | Low temperature evaporation type high-salinity wastewater treatment device |
| CN105858764A (en) * | 2016-05-26 | 2016-08-17 | 北京科清环保科技有限公司 | Evaporating treatment system and treatment method for high-salinity waste water |
| CN108662802A (en) * | 2017-03-27 | 2018-10-16 | 吴巧魁 | Green heat pump refrigerating heating system, refrigerating and heating method and air-conditioning |
| CN113144644A (en) * | 2021-04-02 | 2021-07-23 | 广西顺风钛业有限公司 | Titanium dioxide concentration process |
| CN113144644B (en) * | 2021-04-02 | 2022-08-02 | 广西顺风钛业有限公司 | Titanium dioxide concentration process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20121213 |