CN104857734B - A kind of microwave evaporation device, using and application process - Google Patents
A kind of microwave evaporation device, using and application process Download PDFInfo
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- CN104857734B CN104857734B CN201510211058.5A CN201510211058A CN104857734B CN 104857734 B CN104857734 B CN 104857734B CN 201510211058 A CN201510211058 A CN 201510211058A CN 104857734 B CN104857734 B CN 104857734B
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Abstract
The present invention relates to a kind of microwave evaporation device, using and application process, belong to microwave equipment technical field.The microwave evaporation device, including head tank, dropproducing devices, microwave evaporation device and evaporation apparatus for recovering.The mother liquor that the device can be used for obtaining after evaporation of seawater recycling and Bayer-process seed-separating mother liquor decomposition is evaporated concentration.This method is 0.01 ~ 0.03Mpa first by the Stress control of microwave evaporation device and evaporation apparatus for recovering, the drop that seawater or Bayer-process seed-separating mother liquor are added into 1 ~ 3mm of mother liquor formation particle diameter in head tank enters evaporator, then carry out through distilling water collecting tank recovery after the water vapor condensation that microwave evaporation is obtained, and obtain concentrated seawater or concentrating spent Bayer process seed precipitation solution.The present apparatus eliminates intercycle pump and steam heat-exchanging system, gives full play to the characteristics of microwave selective is dehydrated.
Description
Technical field
The present invention relates to a kind of microwave-vaporising device, using and application process, belong to microwave equipment technical field.
Background technology
Evaporation process is a high energy consumption process, is typically the mesh evaporated in production：（1）The solution for obtaining concentration is direct
It is used as chemical products or semi-finished product；（2）Nationality is evaporated with desolvation, and solution enrichment to saturation state is then cooled down,
Solid product is separated out, that is, uses evaporation, crystallize joint operation to obtain solid solute；（3）Imurity-removal, produces clean solvent.
The essence of traditional evaporation process is the transmission of heat, and the speed of solvent evaporation depends on rate of heat transfer, therefore, evaporation
Operation should belong to diabatic process.Conventional evaporation equipment has at present：Downward film evaporator, film-rising evaporator, forced circulation are steamed
Send out device, evaporator with external heating unit, evaporator with submerged combustion, calandria type evaporator etc..
But, traditional evaporation process supply the energy needed for evaporation due to that can only be exchanged heat using steam or other thermals source,
There is problems with：
（1）Evaporation efficiency is low, generally requires the complicated vapo(u)rization system using multistage or multiple-effect, and equipment investment is big；（2）It is dense molten
Liquid often separates out solute on heating surface in boiling vaporescence and forms dirty layer, reduces heat transfer coefficient, increases energy consumption；
（3）Solvent carburation by evaporation need to absorb a large amount of heat of gasification, therefore, and evaporation operation is highly energy-consuming process.4) traditional evaporation equipment needs
Followed by the steam heat-exchanging system that feed liquid is heated between complicated material liquid and each effect, and using high temperature resistant, corrosion resistant centre
Ring pump valve, need to frequently be changed, and investment and operating cost are high.
Microwave be it is a kind of can quickly, the electromagnetic wave of transmission energy in situ, be also a kind of green, it is quick, efficiently, be easy to from
The novel energy of control.Realize that the report of desalinization is less by the use of microwave as the energy, and Application way is mostly direct uses
Simple evaporator pattern, bulk solutions are directly heated using microwave.
Evaporation of seawater can be recycled and in aluminum oxide in aluminum oxide production process using microwave evaporation equipment, Bayer
The mother liquor that method seed precipitation solution is obtained after decomposing must be evaporated concentration, unnecessary moisture be discharged, to keep production procedure（Circulation
System）In water balance.
The water gross reserves in the whole world is 13.86 hundred million km3, wherein 96.5% is seawater, other are distributed in land, air and biology
In body, about 2.53%, wherein the underground being stored in more than glacier, snow lid and 750m depth, and river, the lake water that can be taken more
And phreatic water etc. only accounts for 0.2% or so, the bitter of a large portion is also included here.
The desalting process of multistage flash evaporation, in current various desalination technologies, multistage flash evaporation occupies leading position,
It makes 60 % that water scale accounts for always making water scale in the world, and Technical comparing is ripe, and is particularly suitable for the electric water of steam power plant's progress
Coproduction.But this method has equipment investment height, evaporation efficiency is low, energy consumption is big, cost high corrosion is fast, heat transfer efficiency is low and equipment
The shortcomings of operating flexibility is small, it is impossible to realize the desalinization processing of low-cost high-efficiency.Utility model patent CN202744353U
《A kind of microwave heating seawater desalination spray gas collecting apparatus》, it is to use microwave heating seawater first, then seawater passes through spray head
Enter vaporization chamber with drops, realize desalinization.The patent employs microwave heating seawater, saves the heating of seawater time,
And water vapour vaporization area is added using spray.But, the latent heat of vaporization of water is larger, is needed in drop evaporation process a large amount of
Heat there is provided evaporation institute calorific requirement, and do not have additional heat supply in evaporation process of the drop in vaporization chamber, this will system
The about evaporation effect of drop；In addition, to reach preferable evaporation effect, seawater requires heat to higher temperature.
The content of the invention
The present invention is for prior art the problem of exist and deficiency, the present invention provide a kind of microwave-vaporising device, using and
Application process.Microwave-vaporising device of the present invention is obtained after being decomposed to evaporation of seawater recycling and Bayer-process seed-separating mother liquor
Mother liquor be evaporated concentration, the present apparatus eliminates intercycle pump and steam heat-exchanging system, give full play to microwave selective take off
The characteristics of water, the present invention is achieved through the following technical solutions.
A kind of microwave-vaporising device, including head tank 1, dropproducing devices, microwave evaporation device and evaporation Water Sproading dress
Put, dropproducing devices include feed pump 2, control valve and high-pressure nozzle 12, microwave evaporation device includes magnetron 3, foam removal
Device 4, thermocouple 5, steam (vapor) outlet 6, evaporator 7, control valve 11, discharging pump 13, evaporation bed 14, material liquid outlet 15, rotating shaft 16,
Bearing 17 and sealing ring 18, evaporation apparatus for recovering include steam condenser 8, distillation water collecting tank 9 and vavuum pump 10, head tank
1 discharging opening is connected with feed pump 2, control valve and the pipeline of high-pressure nozzle 12 successively, and high-pressure nozzle 12 is by pipeline from evaporator 7
Side insertion is located at the inner upper end of evaporator 7, and the outside surrounding of evaporator 7 is uniformly arranged magnetron 3, and evaporator 7 is according to actual feelings
Condition is installed to be provided with immediately below some thermocouples 5,7 internal high pressure shower nozzle of evaporator 12 by rotating shaft 16, bearing 17 and sealing ring 18
Evaporate bed 14, evaporation bed 14 can by rotating shaft 16 in 0 ° ~ 90 ° it is adjustable, pass through the angle for adjusting evaporation bed 14, control liquid film is thick
Degree and feed liquid residence time in vaporization chamber, the bottom of evaporator 7 are provided with material liquid outlet 15, and material liquid outlet 15 and two pipelines connect
Connect, a pipeline is directly connected to control valve, another pipeline connects back to the pipeline of high-pressure nozzle 12, evaporator by control valve
7 inner uppers are provided with demister 4, and the top of evaporator 7 is provided with steam (vapor) outlet 6, steam (vapor) outlet 6 successively with steam condenser 8, distillation
Water collecting tank 9 and the connection of the pipeline of vavuum pump 10.
Heat-insulation layer is provided between the evaporator 7 and magnetron 3.
The high-pressure nozzle 12 is processed using the modified and reinforced Kings of PTFE, and it has fabulous temperature tolerance（- 200 to+
260℃）, corrosion resistance, ageing resistance, hydrophobic intolerant to viscosity and machinability；Meanwhile, it is micro- that it is that electromagnetic wave transparent material does not absorb substantially
Ripple, so as to ensure the uniform of vaporization chamber Space Microwave under multimode radiation.
The evaporation bed 14 inhales ripple using by carborundum, silicon nitride, aluminum oxide, boron sikicate aluminum, barium titanate, clay or carbon black
Ceramic material is made.
The mother liquor that the device is obtained after being decomposed to evaporation of seawater recycling and Bayer-process seed-separating mother liquor is evaporated concentration.
A kind of application process of above-mentioned microwave-vaporising device, it is comprised the following steps that：
Step 1, pressure regulation：First by vavuum pump 10 by microwave evaporation device and evaporation apparatus for recovering pressure control
It is made as 0.01 ~ 0.03Mpa；
Step 2, make drop：Seawater or Bayer-process seed-separating mother liquor are added in head tank 1, then seawater or bayer process seed
Mother liquor is steamed by entering, 1 ~ 3mm of seawater or Bayer-process seed-separating mother liquor formation particle diameter drop in feed pump 2 and high-pressure nozzle 12
Send out tank 7；
Step 3, film：The evaporation bed 14 fallen under the drop that step 2 is obtained in evaporator 7 forms liquid film；
Step 4, microwave evaporation：While step 2 and 3 are carried out, the magnetron 3 of evaporator 7 is opened, it is direct using microwave
Drop and liquid film in heating evaporation tank 7, while evaporating bed absorbs microwave energy, indirectly heat liquid film and whole evaporator 7 are obtained
Vapor；
Step 5, collection of products：The vapor obtained through step 4 is quick from evaporation by negative pressure mode after demister 4
Escape, condensed into steam condenser 8 in tank 7, condensed water obtains distilled water through distilling the recovery of water collecting tank 9, and is concentrated
Seawater or concentrating spent Bayer process seed precipitation solution.
The wherein application process of material liquid outlet 15：（1）Seawater or Bayer-process seed-separating mother liquor flush distillation reach standard：Open
Feed pump 2, closes discharging pump 13, while Open valve 11a, closes valve 11b and 11c, treat that feed liquid is all through micro- in head tank 1
After ripple is concentrated by evaporation, vacuum in closing microwave source 3, vavuum pump 10 and feed pump 2, and release system treats that whole system reaches
During normal pressure, discharging pump 13 is opened, feed liquid is reclaimed through outlet 15 after concentration；（2）Seawater or Bayer-process seed-separating mother liquor need multiple
Evaporation reaches standard：Feed pump 2 and discharging pump 13 are opened simultaneously, and opens valve 11a and 11b, valve 11c are closed, by steaming
Hair bed 14 falls within the concentrate of the bottom of evaporator 7 through material liquid outlet 15, after being mixed by the solvent or diluent liquid in pipeline and head tank, weight
It is new that evaporator 7 is entered by high-pressure nozzle 12, the evaporation demand that reaches so is repeated up to, after whole feed liquid evaporations to be done, is closed
Close vacuum in microwave source 3, vavuum pump 10 and feed pump 2, and release system, while Open valve 11c, close valve 11a and
11b, when whole system reaches normal pressure, opens discharging pump 13, feed liquid is reclaimed through outlet 15 after concentration.
The beneficial effects of the invention are as follows：
（1）The mother liquor obtained after being decomposed using the present apparatus to evaporation of seawater recycling and Bayer-process seed-separating mother liquor is carried out
It is concentrated by evaporation, the present apparatus eliminates intercycle pump and steam heat-exchanging system, gives full play to the characteristics of microwave selective is dehydrated；
（2）The present apparatus eliminates the heavy corrosion of circulating pump and steam heat-exchanging system under HTHP harsh conditions and asked
Topic, and it is of the invention because equipment cavity is big, thoroughly solve original heat exchange for having a strong impact on efficiency, the scale problems of evaporation.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is evaporator structural representation of the present invention；
Fig. 3 is present invention process flow chart.
In figure：1- head tanks, 2- feed pumps, 3- magnetrons, 4- demisters, 5- thermocouples, 6- steam (vapor) outlets, 7- evaporations
Tank, 8- steam condensers, 9- distillation water collecting tanks, 10- vavuum pumps, 11- control valves, 12- high-pressure nozzles, 13- discharging pumps,
14- evaporates bed, 15- material liquid outlets, 16- rotating shafts, 17- bearings, 18- sealing rings.
Embodiment
With reference to the accompanying drawings and detailed description, the invention will be further described.
Embodiment 1
As illustrated in fig. 1 and 2, the microwave-vaporising device, including head tank 1, dropproducing devices, microwave evaporation device and
Apparatus for recovering is evaporated, dropproducing devices include feed pump 2, control valve 11 and high-pressure nozzle 12, microwave evaporation device bag
Magnetron 3, demister 4, thermocouple 5, steam (vapor) outlet 6, evaporator 7, control valve, discharging pump 13, evaporation bed 14, feed liquid is included to go out
Mouth 15, rotating shaft 16, bearing 17 and sealing ring 18, evaporation apparatus for recovering include steam condenser 8, distill water collecting tank 9 and true
Empty pump 10, the discharging opening of head tank 1 is connected with feed pump 2, control valve and the pipeline of high-pressure nozzle 12 successively, and high-pressure nozzle 12 passes through
From the side of evaporator 7, insertion is located at the inner upper end of evaporator 7 to pipeline, and the outside surrounding of evaporator 7 is uniformly arranged magnetron 3, evaporates
Tank 7 is installed according to actual conditions passes through rotating shaft 16, the and of bearing 17 immediately below some thermocouples 5,7 internal high pressure shower nozzle of evaporator 12
Sealing ring 18 provided with evaporation bed 14, evaporation bed 14 can by rotating shaft 16 in 0 ° ~ 90 ° it is adjustable, the bottom of evaporator 7 goes out provided with feed liquid
Mouth 15, material liquid outlet 15 is connected with two pipelines, and a pipeline is directly connected to control valve, and another pipeline passes through control valve
The pipeline of high-pressure nozzle 12 is connected back to, the inner upper of evaporator 7 is provided with demister 4, and the top of evaporator 7 is provided with steam (vapor) outlet 6, steam
Outlet 6 is connected with steam condenser 8, distillation water collecting tank 9 and the pipeline of vavuum pump 10 successively.
Heat-insulation layer is provided with wherein between evaporator 7 and magnetron 3；The high-pressure nozzle 12 uses the modified and reinforced plastics of PTFE
King processes, and it has fabulous temperature tolerance（- 200 to+260 DEG C）, corrosion resistance, ageing resistance, hydrophobic intolerant to viscosity and machine
Processability；Meanwhile, it is that electromagnetic wave transparent material does not absorb microwave substantially, so as to ensure the equal of vaporization chamber Space Microwave under multimode radiation
It is even；Evaporation bed 14 is made of carborundum microwave-absorbing ceramic material.
As shown in figure 3, the device is recycled to evaporation of seawater is evaporated concentration, application process its specific steps are such as
Under：
Step 1, pressure regulation：First by vavuum pump 10 by microwave evaporation device and evaporation apparatus for recovering pressure control
It is made as 0.01Mpa；
Step 2, make drop：30L seawater is added in head tank 1, then seawater passes through feed pump 2 and high-pressure nozzle 12
In, seawater formation particle diameter 1mm drop is entered evaporator 7；
Step 3, film：The evaporation bed 14 fallen under the drop that step 2 is obtained in evaporator 7 forms liquid film, wherein steaming
It is 0 ° to send out the adjustment of bed 14 angle of inclination；
Step 4, microwave evaporation：While step 2 and 3 are carried out, the magnetron 3 of evaporator 7 is opened, it is direct using microwave
Drop and liquid film in heating evaporation tank 7, while evaporating bed absorbs microwave energy, indirectly heat liquid film and whole evaporator 7 are obtained
Vapor, wherein microwave power are that 800W, frequency are 2.45GHz；
Step 5, collection of products：The vapor obtained through step 4 is quick from evaporation by negative pressure mode after demister 4
Escape, condensed into steam condenser 8 in tank 7, condensed water obtains 20.1L distilled water through distilling the recovery of water collecting tank 9, and obtains
Concentrated seawater.
The wherein application process of material liquid outlet 15：Feed pump 2 is opened in evaporation process, discharging pump 13 is closed, opened simultaneously
Valve 11a, closes valve 11b and 11c, after feed liquid is all concentrated through microwave evaporation in head tank 1, closes microwave source 3, vacuum
Vacuum in pump 10 and feed pump 2, and release system, when whole system reaches normal pressure, opens discharging pump 13, feed liquid after concentration
Reclaimed through outlet 15.
Embodiment 2
As illustrated in fig. 1 and 2, the microwave-vaporising device, including head tank 1, dropproducing devices, microwave evaporation device and
Apparatus for recovering is evaporated, dropproducing devices include feed pump 2, control valve and high-pressure nozzle 12, and microwave evaporation device includes
Magnetron 3, demister 4, thermocouple 5, steam (vapor) outlet 6, evaporator 7, control valve 11, discharging pump 13, evaporation bed 14, feed liquid go out
Mouth 15, rotating shaft 16, bearing 17 and sealing ring 18, evaporation apparatus for recovering include steam condenser 8, distill water collecting tank 9 and true
Empty pump 10, the discharging opening of head tank 1 is connected with feed pump 2, control valve and the pipeline of high-pressure nozzle 12 successively, and high-pressure nozzle 12 passes through
From the side of evaporator 7, insertion is located at the inner upper end of evaporator 7 to pipeline, and the outside surrounding of evaporator 7 is uniformly arranged magnetron 3, evaporates
Tank 7 is installed according to actual conditions passes through rotating shaft 16, the and of bearing 17 immediately below some thermocouples 5,7 internal high pressure shower nozzle of evaporator 12
Sealing ring 18 provided with evaporation bed 14, evaporation bed 14 can by rotating shaft 16 in 0 ° ~ 90 ° it is adjustable, the bottom of evaporator 7 goes out provided with feed liquid
Mouth 15, material liquid outlet 15 is connected with two pipelines, and a pipeline is directly connected to control valve, and another pipeline passes through control valve
The pipeline of high-pressure nozzle 12 is connected back to, the inner upper of evaporator 7 is provided with demister 4, and the top of evaporator 7 is provided with steam (vapor) outlet 6, steam
Outlet 6 is connected with steam condenser 8, distillation water collecting tank 9 and the pipeline of vavuum pump 10 successively.
Heat-insulation layer is provided with wherein between evaporator 7 and magnetron 3；The high-pressure nozzle 12 uses the modified and reinforced plastics of PTFE
King processes, and it has fabulous temperature tolerance（- 200 to+260 DEG C）, corrosion resistance, ageing resistance, hydrophobic intolerant to viscosity and machine
Processability；Meanwhile, it is that electromagnetic wave transparent material does not absorb microwave substantially, so as to ensure the equal of vaporization chamber Space Microwave under multimode radiation
It is even；Evaporation bed 14 is made of silicon nitride microwave-absorbing ceramic material.
As shown in figure 3, the device is evaporated concentration to Bayer-process seed-separating mother liquor, application process its comprise the following steps that：
Step 1, pressure regulation：First by vavuum pump 10 by microwave evaporation device and evaporation apparatus for recovering pressure control
It is made as 0.03Mpa；
Step 2, make drop：30L Bayer-process seed-separating mother liquors are added in head tank 1, then Bayer-process seed-separating mother liquor passes through
In feed pump 2 and high-pressure nozzle 12, Bayer-process seed-separating mother liquor formation particle diameter 3mm drop is set to enter evaporator 7；
Step 3, film：The evaporation bed 14 fallen under the drop that step 2 is obtained in evaporator 7 forms liquid film, wherein steaming
It is 90 ° to send out the adjustment of bed 14 angle of inclination, and evaporation bed 14 is made of silicon nitride microwave-absorbing ceramic material；
Step 4, microwave evaporation：While step 2 and 3 are carried out, the magnetron 3 of evaporator 7 is opened, it is direct using microwave
Drop and liquid film in heating evaporation tank 7, while evaporating bed absorbs microwave energy, indirectly heat liquid film and whole evaporator 7 are obtained
Vapor, wherein microwave power are that 1200W, frequency are 2.45GHz；
Step 5, collection of products：The vapor obtained through step 4 is quick from evaporation by negative pressure mode after demister 4
Escape, condensed into steam condenser 8 in tank 7, condensed water obtains 18.8L distilled water through distilling the recovery of water collecting tank 9, and obtains
Concentrating spent Bayer process seed precipitation solution.
The wherein application process of material liquid outlet 15：Feed pump 2 is opened in evaporation process, discharging pump 13 is closed, opened simultaneously
Valve 11a, closes valve 11b and 11c, after feed liquid is all concentrated through microwave evaporation in head tank 1, closes microwave source 3, vacuum
Vacuum in pump 10 and feed pump 2, and release system, when whole system reaches normal pressure, opens discharging pump 13, feed liquid after concentration
Reclaimed through outlet 15.
Embodiment 3
As illustrated in fig. 1 and 2, the microwave-vaporising device, including head tank 1, dropproducing devices, microwave evaporation device and
Apparatus for recovering is evaporated, dropproducing devices include feed pump 2, control valve and high-pressure nozzle 12, and microwave evaporation device includes
Magnetron 3, demister 4, thermocouple 5, steam (vapor) outlet 6, evaporator 7, control valve 11, discharging pump 13, evaporation bed 14, feed liquid go out
Mouth 15, rotating shaft 16, bearing 17 and sealing ring 18, evaporation apparatus for recovering include steam condenser 8, distill water collecting tank 9 and true
Empty pump 10, the discharging opening of head tank 1 is connected with feed pump 2, control valve and the pipeline of high-pressure nozzle 12 successively, and high-pressure nozzle 12 passes through
From the side of evaporator 7, insertion is located at the inner upper end of evaporator 7 to pipeline, and the outside surrounding of evaporator 7 is uniformly arranged magnetron 3, evaporates
Tank 7 is installed according to actual conditions passes through rotating shaft 16, the and of bearing 17 immediately below some thermocouples 5,7 internal high pressure shower nozzle of evaporator 12
Sealing ring 18 provided with evaporation bed 14, evaporation bed 14 can by rotating shaft 16 in 0 ° ~ 90 ° it is adjustable, the bottom of evaporator 7 goes out provided with feed liquid
Mouth 15, material liquid outlet 15 is connected with two pipelines, and a pipeline is directly connected to control valve, and another pipeline passes through control valve
The pipeline of high-pressure nozzle 12 is connected back to, the inner upper of evaporator 7 is provided with demister 4, and the top of evaporator 7 is provided with steam (vapor) outlet 6, steam
Outlet 6 is connected with steam condenser 8, distillation water collecting tank 9 and the pipeline of vavuum pump 10 successively.
Heat-insulation layer is provided with wherein between evaporator 7 and magnetron 3；The high-pressure nozzle 12 uses the modified and reinforced plastics of PTFE
King processes, and it has fabulous temperature tolerance（- 200 to+260 DEG C）, corrosion resistance, ageing resistance, hydrophobic intolerant to viscosity and machine
Processability；Meanwhile, it is that electromagnetic wave transparent material does not absorb microwave substantially, so as to ensure the equal of vaporization chamber Space Microwave under multimode radiation
It is even；Evaporation bed 14 is made of aluminum oxide microwave-absorbing ceramic material.
As shown in figure 3, the device is evaporated concentration to seawater, application process its comprise the following steps that：
Step 1, pressure regulation：First by vavuum pump 10 by microwave evaporation device and evaporation apparatus for recovering pressure control
It is made as 0.02Mpa；
Step 2, make drop：30L seawater is added in head tank 1, then seawater passes through feed pump 2 and high-pressure nozzle 12
In, seawater formation particle diameter 2mm drop is entered evaporator 7；
Step 3, film：The evaporation bed 14 fallen under the drop that step 2 is obtained in evaporator 7 forms liquid film, wherein steaming
It is 10 ° to send out the adjustment of bed 14 angle of inclination, and evaporation bed 14 is made of aluminum oxide microwave-absorbing ceramic material；
Step 4, microwave evaporation：While step 2 and 3 are carried out, the magnetron 3 of evaporator 7 is opened, it is direct using microwave
Drop and liquid film in heating evaporation tank 7, while evaporating bed absorbs microwave energy, indirectly heat liquid film and whole evaporator 7 are obtained
Vapor, wherein microwave power are that 1200W, frequency are 2.45GHz；
Step 5, collection of products：The vapor obtained through step 4 is quick from evaporation by negative pressure mode after demister 4
Escape, condensed into steam condenser 8 in tank 7, condensed water obtains 26.7L distilled water through distilling the recovery of water collecting tank 9, and obtains
Concentrated seawater.
The wherein application process of material liquid outlet 15：Feed pump 2 and discharging pump 13 are opened in evaporation process simultaneously, and is opened
Valve 11a and 11b, close valve 11c, and the concentrate for falling within the bottom of evaporator 7 by evaporation bed 14 passes through pipe through material liquid outlet 15
After road is mixed with the solvent or diluent liquid in head tank, enter evaporator again through high-pressure nozzle 12, after whole feed liquid evaporations to be done,
Vacuum in closing microwave source 3, vavuum pump 10 and feed pump 2, and release system, while Open valve 11c, closes valve 11a
And 11b, when whole system reaches normal pressure, discharging pump 13 is opened, feed liquid is reclaimed through outlet 15 after concentration.
Above in association with accompanying drawing to the present invention embodiment be explained in detail, but the present invention be not limited to it is above-mentioned
Embodiment, can also be before present inventive concept not be departed from the knowledge that those of ordinary skill in the art possess
Put that various changes can be made.
Claims (5)
1. a kind of microwave-vaporising device, it is characterised in that：Including head tank（1）, dropproducing devices, microwave evaporation device and
Apparatus for recovering is evaporated, dropproducing devices include feed pump（2）, control valve（11）And high-pressure nozzle（12）, microwave evaporation
Device includes magnetron（3）, demister（4）, thermocouple（5）, steam (vapor) outlet（6）, evaporator（7）, control valve, discharging pump
（13）, evaporation bed（14）, material liquid outlet（15）, rotating shaft（16）, bearing（17）And sealing ring（18）, evaporating apparatus for recovering includes
Steam condenser（8）, distillation water collecting tank（9）And vavuum pump（10）, head tank（1）Discharging opening successively with feed pump（2）, control
Valve and high-pressure nozzle（12）Pipeline is connected, high-pressure nozzle（12）By pipeline from evaporator（7）Side insertion is located at evaporator
（7）Inner upper end, high-pressure nozzle（12）Make 1 ~ 3mm of seawater or Bayer-process seed-separating mother liquor formation particle diameter drop, evaporator（7）Outside
Portion's surrounding is uniformly arranged magnetron（3）, evaporator（7）Some thermocouples are installed according to actual conditions（5）, evaporator（7）It is internal
High-pressure nozzle（12）Underface passes through rotating shaft（16）, bearing（17）And sealing ring（18）Provided with evaporation bed（14）, evaporate bed（14）
It is made up of carborundum, silicon nitride, aluminum oxide, boron sikicate aluminum, barium titanate, clay or carbon black microwave-absorbing ceramic material, evaporates bed（14）
Rotating shaft can be passed through（16）Adjustable, the evaporator in 0 ° ~ 90 °（7）Bottom is provided with material liquid outlet（15）, material liquid outlet（15）With two
Pipeline is connected, and a pipeline is directly connected to control valve, and another pipeline connects back to high-pressure nozzle by control valve（12）Pipe
Road, evaporator（7）Inner upper is provided with demister（4）, evaporator（7）Top is provided with steam (vapor) outlet（6）, steam (vapor) outlet（6）According to
Secondary and steam condenser（8）, distillation water collecting tank（9）And vavuum pump（10）Pipeline is connected.
2. microwave-vaporising device according to claim 1, it is characterised in that：The evaporator（7）With magnetron（3）It
Between be provided with heat-insulation layer.
3. microwave-vaporising device according to claim 1, it is characterised in that：The high-pressure nozzle（12）Using PTFE plus
Work is formed.
4. the application of microwave-vaporising device described in a kind of claim 1,2 or 3, it is characterised in that：The device is used for evaporation of seawater
Recycle the mother liquor obtained after being decomposed with Bayer-process seed-separating mother liquor and be evaporated concentration.
5. apply according to claim 4, it is characterised in that comprise the following steps that：
Step 1, pressure regulation：Pass through vavuum pump first（10）By microwave evaporation device and the Stress control of evaporation apparatus for recovering
For 0.01 ~ 0.03Mpa；
Step 2, make drop：Seawater or Bayer-process seed-separating mother liquor are added to head tank（1）In, then seawater or Bayer-process seed-separating mother
Liquid passes through feed pump（2）And high-pressure nozzle（12）In, enter 1 ~ 3mm of seawater or Bayer-process seed-separating mother liquor formation particle diameter drop
Evaporator（7）；
Step 3, film：Evaporator is fallen under the drop that step 2 is obtained（7）Interior evaporation bed（14）Form liquid film；
Step 4, microwave evaporation：While step 2 and 3 are carried out, evaporator is opened（7）Magnetron（3）, it is direct using microwave
Heating evaporation tank（7）In drop and liquid film, while evaporating bed absorbs microwave energy, indirectly heat liquid film and whole evaporator（7）
Obtain vapor；
Step 5, collection of products：The vapor obtained through step 4 is through demister（4）Afterwards, it is quick from evaporator by negative pressure mode
（7）Middle effusion, into steam condenser（8）Condensation, condensed water is through distilling water collecting tank（9）Recovery obtains distilled water, and obtains
Concentrated seawater or concentrating spent Bayer process seed precipitation solution.
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| CN201510211058.5A CN104857734B (en) | 2015-04-29 | 2015-04-29 | A kind of microwave evaporation device, using and application process |
| US15/515,460 US10632396B2 (en) | 2015-04-29 | 2016-04-19 | Microwave flash evaporation process and apparatus and use thereof |
| PCT/CN2016/079611 WO2016173424A1 (en) | 2015-04-29 | 2016-04-19 | Microwave flash evaporation process, apparatus and application |
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| CN201510211058.5A CN104857734B (en) | 2015-04-29 | 2015-04-29 | A kind of microwave evaporation device, using and application process |
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| CN104857734B true CN104857734B (en) | 2017-08-25 |
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| WO2016173424A1 (en) * | 2015-04-29 | 2016-11-03 | 昆明理工大学 | Microwave flash evaporation process, apparatus and application |
| CN105251225B (en) * | 2015-10-31 | 2017-10-27 | 武汉纽威晨创科技发展股份有限公司 | A kind of multilayer disc-stack centrifuge and gravity film forming microwave evaporation device |
| CN105435485B (en) * | 2015-12-31 | 2017-05-10 | 宁夏东吴农化有限公司 | Radial type waste acid rectification device |
| CN109264687A (en) * | 2018-10-18 | 2019-01-25 | 昆明理工大学 | A kind of phosphoric acid microwave flash distillation prepares the method and apparatus of polyphosphoric acid |
| CN110064220A (en) * | 2019-05-27 | 2019-07-30 | 昆明理工大学 | A kind of microwave reinforced successive flash vaporization system that feed liquid is moved with thin layer and drop stream |
| CN110559671A (en) * | 2019-09-18 | 2019-12-13 | 昆明理工大学 | Microwave heating fluidization evaporation concentration device and using method thereof |
| CN110817994B (en) * | 2019-10-30 | 2021-03-02 | 西安交通大学 | Water distillation system and method |
| CN112744882A (en) * | 2021-01-22 | 2021-05-04 | 嘉兴港区工业污水处理有限公司 | Recycling system of toxic and harmful degradation-resistant wastewater |
| CN116271891B (en) * | 2023-05-24 | 2023-08-04 | 泸州聚购科技发展有限公司 | Atomizing device for barium titanate production |
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| CN101234257B (en) * | 2007-02-01 | 2011-07-27 | 发泰（天津）科技有限公司 | Microwave rotating thin film concentrator |
| JP5252261B2 (en) * | 2007-08-02 | 2013-07-31 | 兼松エンジニアリング株式会社 | Vacuum, drying / concentration system |
| CN204767453U (en) * | 2015-04-29 | 2015-11-18 | 昆明理工大学 | Microwave - evaporation plant |
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