CN107555698B - Rapid evaporation system and method for high-concentration concentrated solution - Google Patents
Rapid evaporation system and method for high-concentration concentrated solution Download PDFInfo
- Publication number
- CN107555698B CN107555698B CN201711010994.5A CN201711010994A CN107555698B CN 107555698 B CN107555698 B CN 107555698B CN 201711010994 A CN201711010994 A CN 201711010994A CN 107555698 B CN107555698 B CN 107555698B
- Authority
- CN
- China
- Prior art keywords
- ultrasonic
- water
- evaporation chamber
- hot air
- guide plate
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a rapid evaporation system for high-concentration concentrated solution, which comprises an electromagnetic processor, an ultrasonic atomizer, an ultrasonic short-range evaporation chamber, a primary steam-water and material separator, a secondary steam-water separator, a hot air conveyor, a condensate water waste heat recoverer, an ultrasonic spiral guide plate and a slag extractor, wherein the ultrasonic short-range evaporation chamber is arranged in the ultrasonic spiral guide plate; the ultrasonic spiral guide plate comprises a spiral guide plate and a first ultrasonic transducer, the spiral guide plate is arranged in the middle of the ultrasonic short-distance evaporation chamber, and the first ultrasonic transducer is arranged on the outer wall of the ultrasonic short-distance evaporation chamber and connected with the spiral guide plate; the electromagnetic processor is arranged above the spiral guide plate. Correspondingly, the invention also provides a rapid evaporation method for the high-concentration concentrated solution. The invention can overcome the problems of poor fluidity and easy scaling of the high-concentration concentrated solution, continuously and efficiently dry the high-concentration concentrated solution to the water content suitable for combustion treatment at one time, and thoroughly eliminate the harm of the high-concentration concentrated solution.
Description
Technical Field
The invention belongs to the field of waste water evaporation and concentration, and relates to a rapid evaporation system and a rapid evaporation method for high-concentration concentrated solution.
Background
The evaporated product of the high-salinity wastewater, the byproduct of electrodialysis, the garbage leachate and the like can generate high-concentration concentrated solution. The high-concentration concentrated solution contains high-concentration ammonia nitrogen, salts and refractory organic matters, has high viscosity, extremely poor fluidity, extremely easy scaling and extremely high treatment difficulty, and can not be treated by a mature wastewater treatment method or a conventional evaporation method and other treatment technologies; originally, these concentrates were returned to landfills, but after long term returns, pressure on subsequent treatment is increasing and costs are increasing. Most importantly, the treatment method does not fundamentally remove pollutants such as COD (chemical oxygen demand) and the like, but only concentrates and transfers the pollutants. If the concentrated solution is not treated, the pollutants are not eliminated, and huge irreparable pollution is caused to the environment. The incineration is the only method for successfully eliminating the continuous pollution of the high-concentration concentrated solution at present, the operation stability of the garbage incinerator is seriously influenced due to the relatively high water content of the concentrated solution, and more fuel is consumed and energy is seriously wasted.
The high-concentration concentrated solution is a salt content of more than 5 percent, CODcr is 4-6 ten thousand mg/L, the highest is 90000mg/L, BOD5 is 38000mg/L, iron 2050mg/L, lead 12.3mg/L, zinc 370mg/L, potassium and sodium 2500mg/L, and calcium is even 4300mg/L. Suspended matter SS is about 1300mg/L, ammonia nitrogen is 2000 to 3000mg/L, and TDS of total dissolved solids is more than 10000 to 25000mg/L.
Therefore, it is very important to invent a device system capable of effectively and efficiently solving the problem of the rapid dehydration and drying of the high-concentration concentrated solution.
Disclosure of Invention
The invention aims to provide a rapid evaporation system for high-concentration concentrated solution aiming at the defects in the prior art, so as to overcome the problems of poor flowability and easy scaling of the high-concentration concentrated solution, continuously and efficiently dry the high-concentration concentrated solution to the water content suitable for combustion treatment at one time, and ensure that the heat emitted during combustion is greater than the absorbed heat, thereby thoroughly eliminating the harm of the high-concentration concentrated solution; correspondingly, the invention also provides a rapid evaporation method for the high-concentration concentrated solution.
In order to solve the technical problems, the invention adopts the following technical scheme:
a rapid evaporation system for high-concentration concentrated solution comprises an electromagnetic processor, an ultrasonic atomizer, an ultrasonic short-range evaporation chamber, a primary steam-water and material separator, a secondary steam-water separator, a hot air conveyor, a condensate water waste heat recoverer, an ultrasonic spiral guide plate and a slag extractor; the ultrasonic spiral guide plate comprises a spiral guide plate and a first ultrasonic transducer, the spiral guide plate is arranged in the middle of the ultrasonic short-distance evaporation chamber, and the first ultrasonic transducer is arranged on the outer wall of the ultrasonic short-distance evaporation chamber and connected with the spiral guide plate; the electromagnetic processor is arranged above the spiral guide plate and comprises a titanium alloy pipeline which is longitudinally arranged, and a high-frequency electromagnetic coil is wound outside the titanium alloy pipeline; the ultrasonic processor comprises a titanium alloy pipeline and a second ultrasonic transducer connected with the titanium alloy pipeline, and the second ultrasonic transducer is positioned on the lower side of the high-frequency electromagnetic coil; the ultrasonic atomizer consists of a titanium alloy pipeline and a spiral nozzle arranged at the outlet end of the titanium alloy pipeline; the primary steam-water and material separator is arranged at the top of the ultrasonic short-distance evaporation chamber and comprises a high-speed motor, a pin wheel and a jacket diversion trench, wherein a filter screen is arranged in the jacket diversion trench; the jacket diversion trench is provided with a liquid outlet and a solid outlet, the liquid outlet is connected with the condensate water waste heat recoverer, and the solid outlet is connected with the inlet of the electromagnetic processor; the secondary steam-water separator is provided with an input end, a gas outlet and a condensed water outlet, the input end of the secondary steam-water separator is connected with the outlet of the primary steam-water and material separator, the gas outlet is connected with the input end of the hot air conveyor, and the condensed water outlet is connected with the inlet of the condensed water waste heat recoverer; the air outlet of the condensed water waste heat recoverer is connected with the input end of the hot air conveyor; the lower side wall of the ultrasonic short-distance evaporation chamber is provided with a hot air tangential rotational flow inlet, the output end of the hot air conveyor is divided into two paths, one path is connected with the inlet of the ultrasonic atomizer, and the other path is connected with the hot air tangential rotational flow inlet of the ultrasonic short-distance evaporation chamber; the slag extractor is arranged at the bottom of the ultrasonic short-range evaporation chamber; and the outer wall of the ultrasonic short-distance evaporation chamber is also provided with a third ultrasonic transducer connected with the primary steam-water and material separator.
Furthermore, the distance between the spiral guide plates ranges from 5mm to 50mm, and a corrosion-resistant titanium alloy material is selected.
Further, the electric power of the electromagnetic processor is determined according to the amount of the normal-pressure high-concentration concentrated liquid planned to be processed and the water content of the final solid residue.
Further, the hot air conveyer consists of a fan and an air heater.
Furthermore, the condensate water waste heat recoverer adopts a high-efficiency heat exchanger (such as a shell-and-tube heat exchanger with fins), the condensate water passes through a tube pass, and the air passes through a shell pass.
Furthermore, the outer wall of the ultrasonic short-path evaporation chamber is at least provided with two first ultrasonic transducers connected with the spiral guide plate.
Furthermore, the first ultrasonic transducer, the second ultrasonic transducer and the third ultrasonic transducer are all made of magnetostrictive materials, and the ultrasonic frequency is set between 12 kHz and 60 kHz.
Furthermore, the slag extractor comprises a tube plate and an auger connected with the tube plate.
A rapid evaporation method for high-concentration concentrated solution, which comprises the step of performing rapid evaporation on the high-concentration concentrated solution by using the rapid evaporation system.
Specifically, the high-concentration concentrated solution entering the rapid evaporation system is firstly treated by an electromagnetic processor and an ultrasonic processor to ensure that the concentrated solution is heated, subjected to viscosity reduction and subjected to primary polymerization and crystallization, then changed into micro water mist and particles by an ultrasonic atomizer and sprayed above an ultrasonic short-distance evaporation chamber; hot air output by the hot air conveyor enters the ultrasonic short-range evaporation chamber in a rotational flow mode, micro water mist and particles are subjected to high-efficiency heat transfer and mass transfer separation in the ultrasonic short-range evaporation chamber, separated solid particles rotate and fall into a slag extractor at the bottom of the evaporation chamber, separated water vapor and particles are discharged to the upper part of the evaporation chamber and are firstly separated by a primary vapor-water and material separator, separated condensate water enters a condensate water recoverer, and separated particle impurities enter an inlet of an electromagnetic processor for retreatment; the water vapor treated by the primary steam-water separator and the material separator is treated by a secondary steam-water separator, so that the dry gas with extremely low water content is obtained, and the dry gas enters the inlet of the hot air conveyor to be reheated and recycled; the condensed water discharged into the condensed water waste heat recoverer exchanges heat with the supplementary air of the hot air conveyor and then is discharged into a condensed water recycling system; the solid residue falling into the slag extractor after being dried is periodically discharged.
The rapid evaporation system for the high-concentration concentrated solution provided by the invention can overcome the problems of poor fluidity and high possibility of scaling of the high-concentration concentrated solution, continuously and efficiently dry the high-concentration concentrated solution to the water content suitable for combustion treatment at one time, and ensure that the heat emitted during combustion is greater than the absorbed heat, thereby thoroughly eliminating the harm of the high-concentration concentrated solution. Specifically, the method comprises the following steps:
(1) The applicable material range is wide, and various viscous liquids, slurries, emulsions, pastes or melts, even filter cakes and the like can be processed.
(2) The ultrasonic spraying and ultrasonic short-distance evaporation technology can realize higher evaporation efficiency.
(3) The rapid evaporation system provided by the invention only has heat loss after heat exchange of condensed water and heat loss of partial solid residues, and other heat can be completely recycled.
(4) The method has wide applicable temperature, has no influence caused by scaling, and can adopt high-temperature evaporation; because the invention adopts the ultrasonic spray evaporation technology, low-temperature evaporation can be used; in addition, because the invention adopts the supergravity dehumidification technology, the normal temperature evaporation can also be adopted.
(5) The invention has great operation flexibility, and the same rapid evaporation system has large variation range of evaporation drying capacity according to different input conditions.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a flow chart of the operation of the present invention.
In the figure: the system comprises a 1-electromagnetic processor, a 2-ultrasonic processor, a 3-ultrasonic atomizer, a 4-ultrasonic short-distance evaporation chamber, a 5-first-stage steam-water and material separator, a 6-second-stage steam-water separator, a 7-hot air conveyor, an 8-condensate water waste heat recoverer, a 9-slag extractor, a 10-ultrasonic spiral guide plate, an 11-jacket guide groove and a 12-third ultrasonic transducer.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the invention discloses a rapid evaporation system for high-concentration concentrated solution, which comprises an electromagnetic processor 1, an ultrasonic processor 2, an ultrasonic atomizer 3, an ultrasonic short-range evaporation chamber 4, a primary steam-water and material separator 5, a secondary steam-water separator 6, a hot air conveyor 7, a condensed water waste heat recoverer 8, an ultrasonic spiral guide plate 10 and a slag extractor 9; the ultrasonic spiral guide plate 10 comprises a spiral guide plate and a first ultrasonic transducer, the spiral guide plate is arranged in the middle of the ultrasonic short-distance evaporation chamber, and the first ultrasonic transducer is arranged on the outer wall of the ultrasonic short-distance evaporation chamber 4 and connected with the spiral guide plate; the magnetic processor 1 is arranged above the spiral guide plate, the magnetic processor 1 comprises a titanium alloy pipeline which is longitudinally arranged, and a high-frequency electromagnetic coil is wound outside the titanium alloy pipeline; the ultrasonic processor 2 comprises a titanium alloy pipeline and a second ultrasonic transducer connected with the titanium alloy pipeline, and the second ultrasonic transducer is positioned on the lower side of the high-frequency electromagnetic coil; the ultrasonic atomizer 3 consists of a titanium alloy pipeline and a spiral nozzle arranged at the outlet end of the titanium alloy pipeline; the primary steam-water and material separator 5 is arranged at the top of the ultrasonic short-distance evaporation chamber 4, and the primary steam-water and material separator 5 comprises a high-speed motor, a pin wheel and a jacket guide groove 11 with a filter screen arranged inside, which are sequentially connected; the jacket diversion trench 11 is provided with a liquid outlet and a solid outlet, the liquid outlet is connected with the condensed water waste heat recoverer 8, and the solid outlet is connected with the inlet of the electromagnetic processor 1; the secondary steam-water separator 6 is provided with an input end, a gas outlet and a condensed water outlet, the input end of the secondary steam-water separator is connected with the outlet of the primary steam-water and material separator 5, the gas outlet is connected with the input end of the hot air conveyor, and the condensed water outlet is connected with the inlet of the condensed water waste heat recoverer; the air outlet of the condensed water waste heat recoverer 8 is connected with the input end of the hot air conveyor 7; the lower side wall of the ultrasonic short-range evaporation chamber 4 is provided with a hot air tangential rotational flow inlet, the output end of the hot air conveyor 7 is divided into two paths, one path is connected with the inlet of the ultrasonic atomizer 3, and the other path is connected with the hot air tangential rotational flow inlet of the ultrasonic short-range evaporation chamber 4; the slag extractor 9 is arranged at the bottom of the ultrasonic short-distance evaporation chamber 4; and the outer wall of the ultrasonic short-range evaporation chamber 4 is also provided with a third ultrasonic transducer connected with the primary steam-water and material separator 5.
Preferably, the distance between the spiral guide plates is 5mm to 50mm, and a corrosion-resistant titanium alloy material is selected.
Preferably, the electric power of the electromagnetic processor 1 is determined according to the amount of the normal pressure high concentration concentrated solution to be processed and the water content of the final solid residue.
Preferably, the hot air conveyor 7 is composed of a fan and an air heater.
As a preferred scheme, the condensate water waste heat recoverer 8 adopts a shell-and-tube heat exchanger with fins, the condensate water passes through a tube pass, and the air passes through a shell pass.
Preferably, at least two first ultrasonic transducers connected with the spiral guide plate are arranged on the outer wall of the ultrasonic short-distance evaporation chamber 4.
As a preferred scheme, the first ultrasonic transducer, the second ultrasonic transducer and the third ultrasonic transducer are all made of magnetostrictive materials, the ultrasonic frequency is set between 12 kHz and 60kHz, and the ultrasonic transducer has the advantages of wide frequency band, strong load capacity, high temperature resistance, no fatigue period problem after long-term work and capability of being directly welded with an ultrasonic reactor and facilitating the effective transmission of ultrasonic energy.
Preferably, the slag extractor comprises a tube plate and an auger connected with the tube plate.
The technical characteristics and the working principle of each component of the invention are respectively introduced:
1. an electromagnetic processor: the part has two functions, namely, the part can quickly and efficiently heat the incoming high-concentration concentrated solution, and the part can perform electromagnetic treatment on the high-concentration concentrated solution.
The electromagnetic processor adopts a titanium alloy material pipeline, a high-frequency electromagnetic coil is wound outside the pipeline, high-concentration concentrated solution passes through the pipeline, because the high-concentration concentrated solution in the pipeline contains very high salt, namely, the charged particles and ions are very much, the charged particles and ions move with the magnetism, induced current is generated and converted into heat, the high-concentration concentrated solution is rapidly heated, and meanwhile, water molecules with weak polarity and charged ions of other impurities do reverse motion under the action of Lorentz force. In the process, positive and negative ions and particles mutually collide to form a certain number of ion associations, the associations have enough stability, a large number of crystal cores are formed in water, and preparation is provided for subsequent evaporative crystallization.
In addition, under the action of high-frequency electromagnetic energy, water molecules in the high-concentration concentrated solution are used as coupling poles to generate directional polarization, and are continuously and repeatedly polarized to generate distortion, deformation, inversion and vibration, so that the bending and local breakage of hydrogen bonds are caused, the resonance with an external electromagnetic field is realized, the molecular motion is strengthened, the binding state between the water molecules or the associated water molecules is weakened, and various comprehensive chain-shaped and group-shaped macromolecules (H) formed by the original association are further enabled to be in a binding state 2 O) n is dissociated into single water molecules to finally form relatively stable double water (H) 2 O） 2 The quantity of single water molecules is increased, the surface tension of water is reduced, the overall performance of water is changed, the activity of water is increased, the combination state of the water molecules and other ions is changed, and preparation is provided for subsequent overflow and evaporation of water vapor.
The magnitude of the electrical power to the electromagnetic processor is determined by the amount of concentrate planned to be processed, and the moisture content of the final solid residue.
2. An ultrasonic processor: the part is a supplement of the electromagnetic processor only having effective action on charged particles and ions, the electromagnetic processor uses the same titanium alloy pipeline, an ultrasonic transducer is arranged beside an electromagnetic coil of the pipeline to form a pipeline focusing type ultrasonic reactor, ultrasonic waves enable concentrated liquid to generate ultrasonic cavitation, so that violent turbulence between the insides of the liquid is caused, the surface tension of the concentrated liquid is reduced, the internal energy exchange is promoted, both charged particles or ions and uncharged organic matters have good action, the ultrasonic cavitation effect breaks the original viscous state of the concentrated liquid, ultrasonic polymerization is facilitated, the growth of concentrated liquid crystal nuclei is facilitated, and the subsequent evaporative crystallization agglomeration is facilitated. The ultrasonic processor also has the function of ensuring that a titanium alloy pipeline for circulating the high-concentration concentrated solution can not be scaled forever and is kept smooth all the time, and the condition of scaling and blocking quickly when the concentrated solution circulates in a common pipeline is avoided.
3. An ultrasonic atomizer: in recent years, the spray evaporation technology is used for the advanced treatment of the strong brine, the principle is that the strong brine is atomized and quickly evaporated in hot air, a brine separation process is realized in a phase change process, and the generated water vapor can be condensed and recovered. The common spraying methods include direct pressure spraying, gas-liquid two-phase, rotary, opposed impact, vibration, and classical atomization. Due to the special nature of the concentrated solutions, none of these spray methods can ensure a stable spray effect over time or cannot be used. The ultrasonic atomizer is designed by adding ultrasonic energy on the basis of a spiral nozzle, under the ultrasonic action, the concentrated solution generates ultrasonic cavitation, the pressure difference between the liquid and the surrounding gas is increased, and the liquid is repeatedly compressed and expanded for more than ten thousand times per second, so that a remarkable evaporation effect can be caused.
The spiral nozzle used in the ultrasonic atomizer is a very common one used at present, when the spiral nozzle sprays with low-viscosity liquid such as water and the like, the spiral nozzle has the advantages of large flow, good atomization effect and low possibility of blockage, but concentrated liquid with high concentration needs to be treated, because the components are complex, the concentrated liquid is in a viscous state, the flowability is extremely poor, scaling is easy to occur, although electromagnetic treatment and ultrasonic treatment are carried out in the front-stage process, the common spiral nozzle cannot ensure effective atomization of the concentrated liquid, and meanwhile, long-term stable operation cannot be ensured, because the spiral nozzle used in the dust removal field and the desulfurization field in the past often has the problem of blockage. Therefore, the invention designs the ultrasonic atomizer which is formed by superposing power ultrasonic energy on the basis of the spiral nozzle. The inlet end of the spiral nozzle is tightly arranged at the outlet end of the titanium alloy pipeline of the ultrasonic processor, the outlet end of the spiral nozzle is a spiral gradually-changed free resonance end, the effective transmission and amplification of ultrasonic energy are facilitated, the ultrasonic energy comes from a power ultrasonic system of the ultrasonic processor, an ultrasonic device is not designed independently, and ultrasonic equipment is not added on the premise of ensuring the evaporation function. The ultrasonic atomizer has the advantages of wide pulse frequency band, suitability for spraying of various concentrated solutions, never scaling and blocking, large atomization amount, small atomized particles and the like.
The spiral nozzle needs certain flow and pressure of fluid to spray effectively, and the flow and pressure of the concentrated solution in the invention mainly come from hot air from a concentrated solution power pump and a hot air conveyor, and pressure generated by the hot air and heat of an electromagnetic processor.
Researches show that the higher the ultrasonic frequency, the finer the atomized particles, the larger the contact area with hot air, the faster the evaporation speed, but the concentrated solution with high concentration is not easy to generate cavitation, which in turn affects the fineness of the atomized particles, the ultrasonic power needs to be increased, and the ultrasonic frequency for ultrasonic evaporation can be selected between 12 kHz and 60kHz in order to obtain smaller atomized particles and smaller ultrasonic power consumption.
4. Ultrasonic short-distance evaporation chamber: the ultrasonic short-distance evaporation chamber is a unique design of the invention, and the design mode is not found in all data and practices at home and abroad. The electromagnetic processor, the ultrasonic processor and the ultrasonic atomizer are all arranged on the upper part of the evaporation chamber, the middle part of the evaporation chamber is provided with an ultrasonic spiral guide plate, the lower middle part of the evaporation chamber is provided with a hot air tangential rotational flow inlet, and the lowest part of the evaporation chamber is provided with a slag extractor.
The hot air delivered by the hot air conveyor enters the lower middle part of the ultrasonic short-distance evaporation chamber in a rotational flow mode to flow upwards in a rotational flow mode, an ultrasonic spiral guide plate arranged in the ultrasonic short-distance evaporation chamber generates high-frequency micro vibration, so that the rotating hot air is driven to generate ultrasonic hot air compression waves (hereinafter referred to as hot air waves), the hot air waves are simultaneously transmitted to the upper direction and the lower direction of the ultrasonic spiral guide plate, the space of the evaporation chamber is filled with the rotating hot air waves, the hot air waves have compression vibration of 1.2-6 thousands of times per second, and the ultrasonic short-distance evaporation chamber has good functions of heat transfer, mass transfer and agglomeration.
The water mist and particles sprayed by the ultrasonic atomizer fall freely and contact with rotational flow hot air waves at the upper part of the ultrasonic spiral guide plate, mist drops and particles of 100 microns or less can be evaporated and dried quickly, evaporated steam is separated by a subsequent steam-water separator, the dried particles are centrifuged to the outermost edge of an evaporation chamber under the action of rotational flow, and then the particles are dried continuously while falling spirally until the particles fall into a slag extractor. In addition, a part of concentrated solution fog drops and particles which are not dried immediately enter the ultrasonic spiral guide plate, the distance between the spiral guide plates is preferably set to be about 20mm, the flow velocity of hot air between the spiral guide plates is high, and the falling fog drops and particles have a certain suspension effect, so that the staying and drying time of the fog drops and particles in the falling fog drops and particles is prolonged; in addition, the ultrasonic energy between the ultrasonic spiral guide plates is stronger, the mass transfer and heat transfer effects are better, the particles which are rapidly dried can spirally move downwards along the outer spiral guide plates, the water vapor on the inner layer moves upwards, and the solid-liquid separation effect is very good due to the fact that the distance between the two sides is only about 20mm and the strong disturbance effect of hot wind waves. The rotating direction of the hot air entering the ultrasonic short-distance evaporation chamber is consistent with the outward rotating direction of the spiral guide plate. The particles fall into the spiral guide plate and then are continuously dried by the new hot air at the lower part of the evaporation chamber until the particles fall into the slag extractor, and the moisture content of the solid residues falling into the slag extractor is very low.
The spiral guide plate of the ultrasonic short-distance evaporation chamber is made of corrosion-resistant titanium alloy material, and the ultrasonic equipment is an ultrasonic transducer made of magnetostrictive material.
This supersound short distance evaporating chamber has evaporation drying efficiency height, does not have the problem of scale deposit moreover, can continuously keep efficient evaporation drying function, is fit for the unable evaporation drying's of all ordinary evaporation equipment of rapid draing thick high concentration's concentrate.
5. First-stage steam-water and material separator: the part is arranged at the upper part of the evaporation chamber, and the steam and the material are separated by adopting the supergravity principle. Specifically, a high-speed needle wheel hypergravity technology is adopted, namely, under the driving of a high-speed motor, the high-speed rotation of the needle wheel generates a hypergravity effect, airflow containing fog and particles tangentially enters the needle wheel to rotate at a high speed, and some coarse fog particles or crystal particles reach the side wall under the influence of inertia and dragging rotation, so that the separation is quickly realized. The fine fog grains or crystal grains are driven by the high-speed rotation of the pinwheel, and the fog grains or crystal grains reach the jacket diversion trench under the huge centrifugal action; in addition, the periphery of the rotating airflow is compressed under the high-speed supergravity centrifugal action, the gas partial pressure is obviously increased, some unsaturated gases gradually reach saturation and supersaturation, liquid particles are separated out and enter the jacket diversion trench, and the dehumidifying effect is good. Clean air flow passes through the secondary steam-water separator. The jacket diversion trench is internally provided with a filter screen for separating the separated solid and liquid, the separated water enters the condensed water waste heat recoverer, and the separated solid enters the inlet of the electromagnetic processor again for drying treatment again.
The ultrasonic transducer is arranged on the outer wall of the separator, so that the supergravity separator is positioned in a space of ultrasonic compression waves, the separation effect can be further enhanced, the problem of pipeline blockage caused by scaling of separated concentrated liquid can be effectively avoided, and the long-term stable operation of the device is ensured.
The primary steam-water separator has the advantages of high separation efficiency, fine separation particles (having the effect of separating particles with the particle size of less than 1 mu m), no influence of load fluctuation, good water mist removing effect, short separation path and the like.
6. A secondary steam-water separator: the part is arranged at the outlet of the first-stage steam-water and material separator, adopts a membrane air filter and a cross-flow filtration form, and reduces the possibility of blockage of a filtration membrane. The gas outlet of the secondary steam-water separator is connected with the inlet of the hot air conveyor, and the condensed water outlet of the secondary steam-water separator is connected with the inlet of the condensed water waste heat recoverer.
7. A hot air conveyor: the part consists of a fan and an air heater. The hot air is conveyed in two paths, one path is conveyed into an inlet of the ultrasonic atomizer, and the other path is conveyed into an inlet of the ultrasonic short-distance evaporation chamber to provide a heat source for evaporation.
The form of the fan is not limited, and the fan only needs to ensure a certain air inlet amount and air inlet pressure.
The air heater is not limited, because the invention has no scaling problem, a high-temperature heater can be selected, so that the evaporation capacity is larger; in addition, the invention adopts the ultrasonic spraying technology, the specific surface area is large during spraying and evaporation, and the evaporation rate is high, so that the invention is also suitable for using low-level heat energy as a heat source. The heat source in the invention can be selected from various types of heat sources such as electric heating, heat pump, mvr, solar energy, factory waste heat and the like, and the key is to improve the efficiency and save the energy consumption on the premise of adjusting the local conditions.
Furthermore, if there is enough space on site and there is no requirement for the volume of the evaporation chamber, the present invention can also quickly evaporate and dry the concentrated solution by using the circulating dry air without any heat source.
8. And (3) recovering waste heat of condensed water: the part is arranged at the front end of the hot air conveyor and is used for heating the supplementary air for the hot air conveyor by utilizing the waste heat of the condensed water. The condensate water waste heat recoverer preferably uses a thin copper tube shell-and-tube heat exchanger (or other high-efficiency heat exchangers) with fins, the condensate water passes through a tube pass, and the air passes through a shell pass.
9. A slag extractor: the part is arranged at the lowest end of the ultrasonic short-distance evaporation chamber, is provided with a tube plate and a packing auger and plays roles in storing solid residues, discharging slag and preserving heat. After falling into the slag extractor, the dried solid residue is not immediately discharged, but is discharged through the tube plate and the auger after reaching a certain amount, so that the temperature of the residue can be effectively utilized, and the heat loss is effectively reduced.
The invention is suitable for drying media with different temperatures to efficiently evaporate and dry the high-concentration concentrated solution; but also to dry slurries, emulsions, pastes or melts, even filter cakes and the like.
A rapid evaporation method for a high concentration concentrated solution, comprising the step of performing rapid evaporation of the high concentration concentrated solution using the rapid evaporation system as described above.
Specifically, a high-concentration concentrated solution entering the rapid evaporation system through a high-concentration concentrated solution power pump is firstly treated by an electromagnetic processor 1 and an ultrasonic processor 2 to ensure that the concentrated solution is heated, subjected to viscosity reduction and subjected to primary polymerization and crystallization, then changed into micro water mist and particles through an ultrasonic atomizer 3 and sprayed above an ultrasonic short-distance evaporation chamber 4; hot air output by a hot air conveyor 7 enters an ultrasonic short-distance evaporation chamber 4 in a cyclone mode, micro water mist and particles are subjected to high-efficiency heat transfer and mass transfer separation in the ultrasonic short-distance evaporation chamber 4, separated solid particles rotate and fall into a slag extractor 9 at the bottom of the evaporation chamber, separated water vapor and particles are discharged to the upper part of the evaporation chamber 4 and are firstly separated by a first-stage steam-water and material separator 5, separated condensate water enters a condensate water recoverer 8, and separated particle impurities enter an inlet of an electromagnetic processor 1 and are reprocessed; the water vapor treated by the primary steam-water and material separator 5 is treated by a secondary steam-water separator 6, so that the drying gas with extremely low water content is obtained, and the drying gas enters an inlet of a hot air conveyor 7 to be reheated and recycled; the condensed water discharged into the condensed water waste heat recoverer 8 exchanges heat with the supplementary air of the hot air conveyor 7 and then is discharged into a condensed water recycling system; the solid residue falling into the slag extractor 9 after being dried is periodically discharged; the degree of drying of the solid residue is controlled by the ratio of the heating temperature and the feed amount of the concentrate.
The above description and application of the present invention are illustrative, and are not intended to limit the scope of the invention to the above embodiments. Other variations and modifications of the embodiments disclosed herein may be made without departing from the scope and spirit of the invention.
Claims (7)
1. A rapid evaporation system for high concentration concentrate, comprising: the device comprises an electromagnetic processor, an ultrasonic atomizer, an ultrasonic short-range evaporation chamber, a primary steam-water and material separator, a secondary steam-water separator, a hot air conveyor, a condensate water waste heat recoverer, an ultrasonic spiral guide plate and a slag extractor; the ultrasonic spiral guide plate comprises a spiral guide plate and a first ultrasonic transducer, the spiral guide plate is arranged in the middle of the ultrasonic short-distance evaporation chamber, and the first ultrasonic transducer is arranged on the outer wall of the ultrasonic short-distance evaporation chamber and connected with the spiral guide plate; the electromagnetic processor is arranged above the spiral guide plate and comprises a titanium alloy pipeline which is longitudinally arranged, and a high-frequency electromagnetic coil is wound outside the titanium alloy pipeline; the ultrasonic processor comprises a titanium alloy pipeline and a second ultrasonic transducer connected with the titanium alloy pipeline, and the second ultrasonic transducer is positioned on the lower side of the high-frequency electromagnetic coil; the ultrasonic atomizer consists of a titanium alloy pipeline and a spiral nozzle arranged at the outlet end of the titanium alloy pipeline; the primary steam-water and material separator is arranged at the top of the ultrasonic short-distance evaporation chamber and comprises a high-speed motor, a pin wheel and a jacket diversion trench, wherein a filter screen is arranged in the jacket diversion trench; the jacket diversion trench is provided with a liquid outlet and a solid outlet, the liquid outlet is connected with the condensate water waste heat recoverer, and the solid outlet is connected with the inlet of the electromagnetic processor; the secondary steam-water separator is provided with an input end, a gas outlet and a condensed water outlet, the input end of the secondary steam-water separator is connected with the outlet of the primary steam-water and material separator, the gas outlet is connected with the input end of the hot air conveyor, and the condensed water outlet is connected with the inlet of the condensed water waste heat recoverer; the air outlet of the condensed water waste heat recoverer is connected with the input end of the hot air conveyor; the lower side wall of the ultrasonic short-distance evaporation chamber is provided with a hot air tangential rotational flow inlet, the output end of the hot air conveyor is divided into two paths, one path is connected with the inlet of the ultrasonic atomizer, and the other path is connected with the hot air tangential rotational flow inlet of the ultrasonic short-distance evaporation chamber; the slag extractor is arranged at the bottom of the ultrasonic short-range evaporation chamber; the outer wall of the ultrasonic short-distance evaporation chamber is also provided with a third ultrasonic transducer connected with the primary steam-water and material separator;
the distance between the spiral guide plates is 5mm to 50mm, and a corrosion-resistant titanium alloy material is selected;
the electric power of the electromagnetic processor is determined according to the amount of the normal-pressure high-concentration concentrated liquid planned to be processed and the water content of the final solid residue;
the hot air conveyor consists of a fan and an air heater.
2. The rapid evaporation system of claim 1, wherein: the condensate water waste heat recoverer adopts a high-efficiency heat exchanger, the condensate water passes through a tube pass, and the air passes through a shell pass.
3. The rapid evaporation system of claim 1, wherein: the outer wall of the ultrasonic short-distance evaporation chamber is at least provided with two first ultrasonic transducers connected with the spiral guide plate.
4. The rapid evaporation system of claim 1, wherein: the first ultrasonic transducer, the second ultrasonic transducer and the third ultrasonic transducer are all made of magnetostrictive materials, and the ultrasonic frequency is set between 12 kHz and 60 kHz.
5. The rapid evaporation system of claim 1, wherein: the slag extractor comprises a tube plate and a packing auger connected with the tube plate.
6. A rapid evaporation method for high-concentration concentrated solution is characterized in that: comprising the step of flash evaporation of a concentrated solution of high concentration using a flash evaporation system according to claim 1 or 2 or 3 or 4 or 5.
7. The rapid evaporation method according to claim 6, wherein: the high-concentration concentrated solution entering the rapid evaporation system is firstly treated by an electromagnetic processor and an ultrasonic processor to ensure that the concentrated solution is heated, subjected to viscosity reduction and primary polymerization and crystallization, then changed into micro water mist and particles by an ultrasonic atomizer and sprayed above an ultrasonic short-distance evaporation chamber; hot air output by the hot air conveyor enters the ultrasonic short-range evaporation chamber in a rotational flow mode, micro water mist and particles are subjected to high-efficiency heat transfer and mass transfer separation in the ultrasonic short-range evaporation chamber, separated solid particles rotate and fall into a slag extractor at the bottom of the evaporation chamber, separated water vapor and particles are discharged to the upper part of the evaporation chamber and are firstly separated by a primary vapor-water and material separator, separated condensate water enters a condensate water recoverer, and separated particle impurities enter an inlet of an electromagnetic processor for retreatment; the water vapor treated by the primary steam-water separator and the material separator is treated by a secondary steam-water separator, so that the dry gas with extremely low water content is obtained, and the dry gas enters the inlet of the hot air conveyor to be reheated and recycled; the condensed water discharged into the condensed water waste heat recoverer exchanges heat with the supplementary air of the hot air conveyor and then is discharged into a condensed water recycling system; the solid residue falling into the slag extractor after being dried is periodically discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010994.5A CN107555698B (en) | 2017-10-26 | 2017-10-26 | Rapid evaporation system and method for high-concentration concentrated solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010994.5A CN107555698B (en) | 2017-10-26 | 2017-10-26 | Rapid evaporation system and method for high-concentration concentrated solution |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107555698A CN107555698A (en) | 2018-01-09 |
| CN107555698B true CN107555698B (en) | 2023-04-07 |
Family
ID=60987318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711010994.5A Active CN107555698B (en) | 2017-10-26 | 2017-10-26 | Rapid evaporation system and method for high-concentration concentrated solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107555698B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108862807B (en) * | 2018-05-31 | 2021-06-18 | 西北矿冶研究院 | Device and method for removing fluorine and chlorine by evaporation and concentration of strengthened copper smelting waste acid |
| CN109987771B (en) * | 2019-05-10 | 2021-09-10 | 成都三顶环保科技有限公司 | Desulfurization wastewater treatment method and equipment |
| CN110171900B (en) * | 2019-06-11 | 2021-10-29 | 南京大学 | High-temperature salt-containing wastewater concentration and crystallization device and application |
| CN110240346B (en) * | 2019-06-25 | 2021-10-29 | 济宁学院 | Multi-field coupling drying system and drying wastewater treatment process |
| CN113559531B (en) * | 2020-04-28 | 2023-09-29 | 惠生工程（中国）有限公司 | Vaporization device and method suitable for high boiling point substance in low superheat degree environment |
| CN113230679B (en) * | 2021-04-27 | 2022-02-01 | 湖南省美程陶瓷科技有限公司 | Centrifugal electronic ceramic spray granulating and drying device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007139524A1 (en) * | 2006-05-30 | 2007-12-06 | Mustafa Faleh | Vibrating & electromagnetic evaporation |
| WO2010020723A2 (en) * | 2008-08-20 | 2010-02-25 | Nicolas Ugolin | Method for the desalination or purification of water by distillation of a spray (spray pump) |
| CN101838079A (en) * | 2010-04-21 | 2010-09-22 | 王剑波 | Ultrasonic atomization and vaporization seawater desalination desalting device and method |
| CN103754969A (en) * | 2014-01-24 | 2014-04-30 | 吴佳明 | Atomized distilled water production system |
| CN103864143A (en) * | 2014-01-25 | 2014-06-18 | 东莞市地大纳米材料有限公司 | Method for preparing nanometer zirconium oxide granulated powder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HUP1400180A2 (en) * | 2014-03-31 | 2015-10-28 | Cominnex Zrt | Pulsating audio frequency mesofluidic reactor |
-
2017
- 2017-10-26 CN CN201711010994.5A patent/CN107555698B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007139524A1 (en) * | 2006-05-30 | 2007-12-06 | Mustafa Faleh | Vibrating & electromagnetic evaporation |
| WO2010020723A2 (en) * | 2008-08-20 | 2010-02-25 | Nicolas Ugolin | Method for the desalination or purification of water by distillation of a spray (spray pump) |
| CN101838079A (en) * | 2010-04-21 | 2010-09-22 | 王剑波 | Ultrasonic atomization and vaporization seawater desalination desalting device and method |
| CN103754969A (en) * | 2014-01-24 | 2014-04-30 | 吴佳明 | Atomized distilled water production system |
| CN103864143A (en) * | 2014-01-25 | 2014-06-18 | 东莞市地大纳米材料有限公司 | Method for preparing nanometer zirconium oxide granulated powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107555698A (en) | 2018-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107555698B (en) | Rapid evaporation system and method for high-concentration concentrated solution | |
| CN107555699B (en) | Rapid evaporation system and method for high-salinity wastewater | |
| CN103982903B (en) | System and method for treating tail end waste water by using smoke waste heat | |
| CN108285188A (en) | A kind of UTILIZATION OF VESIDUAL HEAT IN coordinated desulfurization wastewater zero discharge and the device and method for removing plume | |
| CN203878017U (en) | Desulfurization wastewater reuse device for power plant | |
| CN107162084A (en) | A kind of salt water treating system and its method with preposition heat exchanger and rear end deduster | |
| CN206955682U (en) | A kind of salt water treating system with preposition heat exchanger and rear end deduster | |
| CN111892112A (en) | Treatment system for zero discharge of desulfurization wastewater of coal-fired power plant | |
| CN104926011B (en) | The evaporative crystallization zero-discharge treatment system and processing method of a kind of high-COD waste water | |
| CN107857321B (en) | Process for zero discharge treatment of wastewater of thermal power plant | |
| CN108558110A (en) | A kind of ultra supercritical CFB boiler desulfurization wastewater zero-discharge treatment system and method | |
| CN107324430A (en) | A kind of method and apparatus that wastewater zero discharge is realized based on multiple-effect sound wave effect | |
| CN206799197U (en) | A kind of undersaturation flue gas condensing crystallizing desulfurization wastewater zero-discharge treatment system | |
| CN106517628A (en) | Desulfurization-wastewater zero discharging device for coal-fired power plant | |
| CN109879343A (en) | A kind of processing system and processing method of catalytic cracking and desulfurizing waste water | |
| CN108275823A (en) | A kind of compound Zero discharging system of dense salt waste water and technique | |
| CN213942667U (en) | Flue gas and waste water's cooperative processing system | |
| CN111792775A (en) | Zero-emission method for multi-heat-source evaporation desulfurization wastewater | |
| CN112759017A (en) | Efficient anti-scaling and heat exchange plate-enhanced falling film evaporation system and application method thereof | |
| CN207451847U (en) | A kind of flash evaporator system for high concentration concentrate | |
| CN212476173U (en) | Treatment system for zero discharge of desulfurization wastewater of coal-fired power plant | |
| CN101920123A (en) | Internal circulation evaporator with settling chamber | |
| CN213294703U (en) | Fly ash desalination system containing potassium chloride salt | |
| CN207451846U (en) | A kind of flash evaporator system for high-salt wastewater | |
| CN111592163B (en) | Desulfurization wastewater zero-discharge treatment system and treatment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |