CN108671567A - A kind of evaporating, concentrating and crystallizing system and its heat-exchange method - Google Patents
A kind of evaporating, concentrating and crystallizing system and its heat-exchange method Download PDFInfo
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- CN108671567A CN108671567A CN201810862581.8A CN201810862581A CN108671567A CN 108671567 A CN108671567 A CN 108671567A CN 201810862581 A CN201810862581 A CN 201810862581A CN 108671567 A CN108671567 A CN 108671567A
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- heat
- evaporating
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- 238000001704 evaporation Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 claims abstract description 93
- 238000010438 heat treatment Methods 0.000 claims description 159
- 238000009834 vaporization Methods 0.000 claims description 61
- 230000008016 vaporization Effects 0.000 claims description 61
- 239000007921 spray Substances 0.000 claims description 58
- 230000008020 evaporation Effects 0.000 claims description 30
- 238000009413 insulation Methods 0.000 claims description 23
- 238000004321 preservation Methods 0.000 claims description 20
- 125000004122 cyclic group Chemical group 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 8
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 5
- 239000010425 asbestos Substances 0.000 claims description 5
- 239000003365 glass fiber Substances 0.000 claims description 5
- 239000011496 polyurethane foam Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 229910052895 riebeckite Inorganic materials 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 26
- 238000002425 crystallisation Methods 0.000 description 16
- 230000008025 crystallization Effects 0.000 description 16
- 239000006260 foam Substances 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 phenolic aldehyde Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0011—Heating features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0094—Evaporating with forced circulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
- B01D1/305—Demister (vapour-liquid separation)
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The present invention relates to a kind of evaporating, concentrating and crystallizing systems, feeding-passage is connected in turn by feedstock direction, level-one preheater, two level preheater and heat-exchange system, heat-exchange system includes evaporator, primary heater, secondary heater and forced circulation pump, primary heater, forced circulation pump and secondary heater are followed in series to form loop, the discharge port of two level preheater and the first feeding mouth of primary heater connect, second feeding mouth of primary heater is connect with evaporator, the discharge port of secondary heater is connect with evaporator, the discharge port of secondary heater and the interconnecting piece of evaporator are arranged higher than the feeding mouth of primary heater and the interconnecting piece of evaporator, the caliber of primary heater and the caliber of secondary heater are adapted with the entrance of forced circulation pump respectively；That the present invention provides a kind of material-heat-exchanging effects is good, Flow of Goods and Materials performance is preferable and energy-efficient evaporating, concentrating and crystallizing system.
Description
Technical field
The present invention relates to a kind of evaporating, concentrating and crystallizing system and its heat-exchange methods.
Background technology
Evaporating, concentrating and crystallizing system is widely used in the water of the industries such as medicine, food, chemical industry and light industry or organic molten
The evaporation concentrated solution and liquid waste processing of matchmaker's solution.And existing evaporating, concentrating and crystallizing system is in heat transfer process, by caliber ratio
Larger single heater exchanges heat, to need the forced circulation pump for being equipped with corresponding bore to match, even if being equipped with
Large-scale forced circulation pump, the bore of forced circulation pump also can not be compared with the bores of heater, and due to the caliber of heater
It is far longer than the caliber of forced circulation pump, it is larger by resistance so as to cause the flowing of material, reduce the mobility of material
Can, to make easily fouling in forced circulation pump, and the large-scale forced circulation pump being equipped with improves energy consumption.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide, a kind of material-heat-exchanging effect is good, material stream
Dynamic better performances and energy-efficient evaporating, concentrating and crystallizing system and its heat-exchange method.
One aspect of the present invention provides a kind of evaporating, concentrating and crystallizing system, by feedstock direction be connected in turn feeding-passage,
Level-one preheater, two level preheater and heat-exchange system, it is characterised in that：The heat-exchange system includes evaporator, level-one heating
Device, secondary heater and forced circulation pump, the primary heater, forced circulation pump and secondary heater are followed in series to form
First feeding mouth of loop, the discharge port of two level preheater and primary heater connects, the second feeding mouth of primary heater with
Evaporator connects, and the discharge port of secondary heater is connect with evaporator, the discharge port of secondary heater and the interconnecting piece of evaporator
It is arranged higher than the feeding mouth of primary heater and the interconnecting piece of evaporator, the caliber of primary heater and the caliber of secondary heater
It is adapted respectively with the entrance of forced circulation pump.
By using above-mentioned technical proposal, original caliber ratio is replaced by primary heater and secondary heater combination
Larger single heater can realize cycle to material, due to level-one to also need to only be equipped with small-sized forced circulation pump
The caliber of heater and the caliber of secondary heater are adapted with the entrance of forced circulation pump respectively, to make the flowing of material hinder
Power is smaller, improves the mobile performance of material, makes less scaling in forced circulation pump, and small-sized forced circulation pump reduces energy
Consumption, has the advantages that energy saving.
The present invention is further arranged to：The evaporator includes shell and setting heating room inside housings and evaporation
Second feeding mouth of room, the primary heater is connect with heating room, and the discharge port of the secondary heater is connect with vaporization chamber,
The vaporization chamber setting is provided with demister, is arranged on the indoor side wall of the heating above heating room at the top of the vaporization chamber
There are two pieces of bafflers relatively disposed in parallel up and down, is formed with heating chamber between two pieces of bafflers, is arranged in the heating chamber
There are several vertical arrangement both ends to extend through the heating tube bundles of two pieces of bafflers, several heating tube bundles are spaced in parallel to each other sets for this
It sets, a central circulating tube up and down, heating room is provided in the middle part of the heating room and among two pieces of bafflers
It is provided with the heating steam inlet tube for being passed through in heating steam to heating chamber on lateral wall, is arranged on the outdoor side wall of the heating
There is a condensed water outlet pipe being connect with heating chamber bottom, is provided in hemispherical above the central circulating tube and in vaporization chamber
Evaporation deflector, the spray group for side wall in spraying and sprinkling evaporation room is provided in the vaporization chamber and below demister
Part.
By using above-mentioned technical proposal, under the circulation continuous heating of primary heater and secondary heater, heating is completed
Material afterwards is evaporated from the vaporization chamber that the discharge port of secondary heater enters evaporator, in order to further coordinate material
Evaporative crystallization, be provided with two pieces of bafflers relatively disposed in parallel up and down on the indoor side wall of heating, two pieces of bafflers it
Between be formed with heating chamber, the material of a part of carburation by evaporation rises, and the material that another part temperature is not enough to carburation by evaporation declines
To being heated in heating room, the insufficient material of the temperature that heating chamber is recycled enters from below to be arranged in heating chamber
In several vertical arrangements and both ends extend through in the heating tube bundles of two pieces of bafflers, heating tube bundle is located in heating chamber,
The heating steam inlet tube for being passed through in heating steam to heating chamber is provided on the outdoor side wall of heating, heating steam passes through heating
Steam inlet tube, which enters in heating chamber, to be not enough to temperature in heating tube bundle the material of carburation by evaporation and heats, by several heating
Tube bank is set as setting spaced in parallel to each other, so that it is uniformly heated, improves the contact area of heating, to rapidly be added
Hot vapour ascension, is upwardly into vaporization chamber, meanwhile, in order to coordinate the carburation by evaporation of material, in the middle part of heating room and it is located at
It is provided with a central circulating tube up and down among two pieces of bafflers, the insufficient material of temperature in vaporization chamber is made to lead to from top to bottom
Cross central circulating tube, while under the effect of the continuous heating of heating chamber, temperature increase and be carried out at the same time the material of heating from it is lower toward
On re-entered into vaporization chamber after heating tube bundle, to accomplish the duration circulating-heating to material, ensure heating effect
The utilization rate and evaporative crystallization speed that material is also improved while fruit, improve production efficiency, are condensed out on heating tube bundle
Condensed water by the way that condensed water outlet pipe export connect with heating chamber bottom on the outdoor side wall of heating is arranged, prevent internal cooling
The accumulation of water absorbs heat, causes the consumption of the energy, is provided in hemispherical above central circulating tube and in vaporization chamber
Evaporation deflector, in the setting of hemispherical evaporation deflector on the one hand for avoiding the material after evaporation from entering directly into and removes
It in foam device, causes foam removal in the demister short time to be not thorough, influences the effect of foam removal, and play the work of lasting accumulation heat
With increasing the heat in vaporization chamber to facilitate the evaporative crystallization of material, the material guiding after on the other hand evaporating ascension
To on the madial wall of vaporization chamber, it is equipped with and is used for side wall in spraying and sprinkling evaporation room in vaporization chamber and below demister
Spray assemblies reduce the appearance of material incrustation phenomenon on vaporization chamber madial wall after evaporation, avoid the occurrence of heat transfer deterioration, follow
Ring compression rises, unit vacuum degree reduces, influences the phenomenon that unit operation efficiency, causes the appearance of larger economic loss.
The present invention is further arranged to：The spray assemblies include the cyclic annular spray tube being arranged in vaporization chamber, the ring
Circumferentially equally spaced from each other from several spray nozzles are provided on shape spray tube outer tube wall, the output end direction of the spray nozzle is steamed
The indoor side wall of hair is arranged, and the conduit for being continually fed into heated material is connected on the ring-type spray tube.
By using above-mentioned technical proposal, after the heating vaporization of material in vaporization chamber rises, a part of material can be
Structure on vaporization chamber madial wall, the material after heating is imported into from conduit in the cyclic annular spray tube being arranged in vaporization chamber, through setting
It sets on several spray nozzles spray to vaporization chamber madial wall on cyclic annular spray tube outer tube wall, is sprayed using the material after heating
On the other hand effect reduces the influence to the evaporation efficiency of evaporator, no on the one hand for coordinating the phenomenon that preventing fouling
The ejecta of special disposal spray nozzle is needed, spraying effect is good and need not clear up, and prevents the appearance of scale formation, knot
Structure is simple and reliable.
The present invention is further arranged to：The hull outside is provided with Matter Transfer pump, the output of the Matter Transfer pump
End is connect by conduit with cyclic annular spray tube, and the input terminal of the Matter Transfer pump is connected with feed pipe, and the feed pipe is separate
One end of Matter Transfer pump is through shell and extends in heating room.
By using above-mentioned technical proposal, in order to further decrease energy consumption, the material for recycling heating is sprayed,
Hull outside is provided with Matter Transfer pump, and the output end of Matter Transfer pump is connect by conduit with cyclic annular spray tube, and input terminal is logical
It crosses feed pipe and is connected to the material heated in room, under the action of Matter Transfer pumps, be extracted in heating room by feed pipe
Material entered in cyclic annular spray tube through conduit, to carry out lasting spray to the madial wall of vaporization chamber, while after spraying
Material fall back in heating room and heated again, while temperature can also be extracted meet the material of evaporating temperature and be directly entered
To being evaporated in vaporization chamber, the efficiency of evaporation is improved, accelerates whole speed of production.
The present invention is further arranged to：The output end of the spray nozzle tilts down setting, and with the central axes of shell
In 45 degree of angles.
By using above-mentioned technical proposal, in order to further increase the effect of spray, avoids the occurrence of vaporization chamber madial wall and go out
The phenomenon that existing fouling, influences normal crystallization, the output end of spray nozzle is tilted down setting, and be in four with the central axes of shell
15 degree of angles, the structure ensure that the effect of spray maximizes, and the angle of generation carries out reinforcement spray to the madial wall of vaporization chamber
Leaching is rinsed, and the effect of rinse spray is improved.
The present invention is further arranged to：Heater box is connected on the conduit, the heater box is internally provided with coil-like
Electric heating tube.
By using above-mentioned technical proposal, in order to accelerate the efficiency of evaporative crystallization, keep a part straight by the material of spray
Connect evaporative crystallization, be also associated with heater box on conduit, material enter in heater box after by coil-like electric heating tube
It after heating, enters back into vaporization chamber, which can be used for heated material, improve the efficiency of evaporative crystallization.
The present invention is further arranged to：Connected by Heat preservation circulation pipe between the primary heater and secondary heater
Logical, the Heat preservation circulation pipe includes outer tube and inner tube, and the outer tube includes the first insulating layer set gradually from outside to inside
And second thermal insulation layer, it is provided with vacuum heat-insulating layer between the second thermal insulation layer and inner tube.
By using above-mentioned technical proposal, in order to avoid occurring the loss of thermal energy during cycle, followed to reduce
The efficiency of heating surface of ring is connected between primary heater and secondary heater by Heat preservation circulation pipe, to add in cycle
In the process of heat, when the material of heating is by Heat preservation circulation pipe, internal heat will not quickly become separated in flight, and reduce heat when transmitting
Loss sets Heat preservation circulation pipe to include outer tube and inner tube, and outer tube includes that first set gradually from outside to inside protects again
Warm layer and second thermal insulation layer, the heated material conveyed in inner tube is by the heat-blocking action of second thermal insulation layer and then by being arranged
The first insulating layer on the outside of second thermal insulation layer is kept the temperature, and further improves the effect of insulation, while also second
It is provided with vacuum heat-insulating layer between thermal insulation layer and inner tube, the loss of thermal energy is made to be preferably minimized, does not influence the effect of circulating-heating material
Rate and effect.
The present invention is further arranged to：Spiral add is distributed in axial direction in said inner tube along Heat preservation circulation pipe
Heat pipe, the input terminal of the heating tube are connected with steam lead, the output end of the heating tube after sequentially passing through inner and outer tubes
It is connected with out steam pipe after sequentially passing through inner and outer tubes.
Preferably：First insulating layer is polyurethane foam or phenol formaldehyde foam, and the second thermal insulation layer is glass fibre
Or asbestos.
By using above-mentioned technical proposal, spiral add is distributed in the axial direction along Heat preservation circulation pipe in inner tube
Heat pipe, the heating tube setting for heat by Heat preservation circulation pipe convey hydronic material, heating tube it is defeated
Enter end and sequentially pass through to be connected with steam lead after inner and outer tubes, the output end of heating tube connects after sequentially passing through inner and outer tubes
There are steam pipe, hot steam to be entered in inner tube from steam lead, exchanges heat with the heated material of conveying, after the completion of exchanging heat
On the one hand steam improves the efficiency of heating surface of material multi heating, makes entire heating process by going out steam pipe export, the structure
More quickly, on the other hand prevent temperature during transmission from declining the loss brought and reducing the reaction entirely heated, shadow
Ring the speed of evaporative crystallization；In order to ensure the effect of insulation, sets the first insulating layer to polyurethane foam or phenolic aldehyde steeps
Foam sets second thermal insulation layer to glass fibre or asbestos, the effective transmission for separating heat.
Another aspect of the present invention provides a kind of material-heat-exchanging method of evaporating, concentrating and crystallizing system, it is characterised in that：
(1) the pre-heat treatment：Material passes sequentially through level-one preheater and two level preheater carries out preliminary the pre-heat treatment successively；
(2) heat：Added by the first feeding mouth injection of primary heater by (1) step treated material
After heat, evaporator is entered after being heated using secondary heater；
(3) it is heated at reflux processing：Residual logistics of the material after evaporator evaporating, concentrating and crystallizing after heating is again through one
Second feeding mouth of grade heater is back to primary heater and is heated, and repeats the process of (2) step.
The heat transfer effect of material is effectively raised by the Multi-stage heating to material by using above-mentioned technical proposal.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
With obtain other attached drawings according to these attached drawings.
Fig. 1 is specific embodiment of the invention structural schematic diagram.
Fig. 2 is evaporation structure schematic diagram in the specific embodiment of the invention.
Fig. 3 is Heat preservation circulation pipe structural schematic diagram in the specific embodiment of the invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1-Figure 3, the invention discloses a kind of evaporating, concentrating and crystallizing system, by feedstock direction be connected in turn into
Expect channel, level-one preheater 5, two level preheater 6 and heat-exchange system, in the specific embodiment of the invention, the heat-exchange system
Including evaporator 1, primary heater 2, secondary heater 3 and forced circulation pump 4, the primary heater 2, forced circulation pump
4 and secondary heater 3 be followed in series to form loop, the discharge port of two level preheater 6 connects with the first feeding mouth of primary heater 2
It connects, the second feeding mouth of primary heater 2 is connect with evaporator 1, and the discharge port of secondary heater 3 is connect with evaporator 1, two level
The discharge port of heater 3 is arranged with the interconnecting piece of evaporator 1 higher than the feeding mouth of primary heater 2 and the interconnecting piece of evaporator 1,
The caliber of primary heater 2 and the caliber of secondary heater 3 are adapted with the entrance of forced circulation pump 4 respectively.
By using above-mentioned technical proposal, original caliber is replaced by primary heater 2 and the combination of secondary heater 3
Bigger single heater can realize cycle to material, due to one to also need to only be equipped with small-sized forced circulation pump 4
The caliber of grade heater 2 and the caliber of secondary heater 3 are adapted with the entrance of forced circulation pump 4 respectively, to make material
Flow resistance is smaller, improves the mobile performance of material, makes less scaling in forced circulation pump 4, and small-sized forced circulation pump 4
Energy consumption is reduced, is had the advantages that energy saving.
In the specific embodiment of the invention, the evaporator 1 includes shell 11 and the heating being arranged inside shell 11
Second feeding mouth of room 12 and vaporization chamber 13, the primary heater 2 is connect with heating room 12, and the secondary heater 3 goes out
Material mouth is connect with vaporization chamber 13, and for the setting of the vaporization chamber 13 above heating room 12,13 top of the vaporization chamber is provided with foam removal
Device 14 is provided with two pieces of bafflers 18 relatively disposed in parallel up and down, two pieces of bafflers 18 on 12 madial wall of heating room
Between be formed with heating chamber 19, be provided in the heating chamber 19 several vertical arrangement both ends extend through two pieces of bafflers plus
Heat pipe bundle 15,15 setting spaced in parallel to each other of several heating tube bundles and are located at two pieces of bafflers 18 at the middle part of the heating room 12
Centre is provided with a central circulating tube 16 up and down, is provided on 12 lateral wall of heating room for being passed through heating steam
To the heating steam inlet tube 8 in heating chamber 19, be provided on 12 lateral wall of the heating room connect with 19 bottom of heating chamber it is cold
Condensate outlet pipe 9, the top of the central circulating tube 16 and is provided in vaporization chamber 13 in hemispherical evaporation deflector 17, institute
It states in vaporization chamber 13 and is provided with the spray assemblies for 13 madial wall of spraying and sprinkling evaporation room positioned at 14 lower section of demister.
By using above-mentioned technical proposal, under the circulation continuous heating of primary heater 2 and secondary heater 3, heat
Material after is evaporated from the vaporization chamber 13 that the discharge port of secondary heater 3 enters evaporator 1, in order to further match
The evaporative crystallization for closing material is provided with two pieces of bafflers 18 relatively disposed in parallel up and down on heating 12 madial wall of room, this two
Heating chamber 19 is formed between block baffler 18, the material of a part of carburation by evaporation rises, and another part temperature is not enough to evaporate
The material of vaporization, which drops in heating room 12, to be heated, and heats the insufficient material of temperature recycled inside room 12 from below
It enters several vertical arrangements being arranged in heating chamber 19 and both ends extends through in the heating tube bundles 15 of two pieces of bafflers, add
Heat pipe bundle 15 is located in heating chamber 19, is provided on heating 12 lateral wall of room for being passed through in heating steam to heating chamber 19
Steam inlet tube 8 is heated, heating steam enters in heating chamber 19 by heating steam inlet tube 8 to temperature deficiency in heating tube bundle 15
Heated with the material of carburation by evaporation, set several heating tube bundles 15 to setting spaced in parallel to each other, make its uniformly by
Heat improves the contact area of heating, to rapidly carry out heating vaporization ascension, is upwardly into vaporization chamber 13, meanwhile, it is
The carburation by evaporation of cooperation material, at 12 middle part of heating room and among two pieces of bafflers 18 being provided with one up and down
Circulation pipe 16 is entreated, makes in vaporization chamber 13 the insufficient material of temperature from top to bottom by central circulating tube 16, while in heating chamber 19
Continuous heating effect under, temperature increases and is carried out at the same time the material of heating and reentered after heating tube bundle 15 from lower to upper
Into vaporization chamber 13, to accomplish the duration circulating-heating to material, ensure to also improve material while heating effect
Utilization rate and evaporative crystallization speed, improve production efficiency, and the condensed water being condensed out on heating tube bundle 15 is being added by setting
The condensed water outlet pipe 9 being connect with 19 bottom of heating chamber on 12 lateral wall of hot cell exports, and prevents the accumulation of internal cooling water from absorbing heat
Amount, causes the consumption of the energy, is provided in hemispherical evaporation water conservancy diversion above central circulating tube 16 and in vaporization chamber 13
Plate 17, in the setting of hemispherical evaporation deflector 17 on the one hand for avoiding the material after evaporation from entering directly into demister 14
In, it causes foam removal in the demister short time to be not thorough, influences the effect of foam removal, and play the role of lasting accumulation heat, rise
To facilitate the evaporative crystallization of material, the material after on the other hand evaporating ascension is guided to steaming heat in high vaporization chamber 13
On the madial wall for sending out room 13, it is equipped with and is used for 13 inside of spraying and sprinkling evaporation room in vaporization chamber 13 and below demister 14
The spray assemblies of wall reduce the appearance of material incrustation phenomenon on 13 madial wall of vaporization chamber after evaporation, avoid the occurrence of heat transfer
Deteriorate, circulating pressure rising, the reduction of unit vacuum degree, influence the phenomenon that unit operation efficiency, causes going out for larger economic loss
It is existing.
In the specific embodiment of the invention, the spray assemblies include the cyclic annular spray tube 21 being arranged in vaporization chamber 13,
It is circumferentially equally spaced from each other from being provided with several spray nozzles 22 on ring-type spray tube 21 outer tube wall, the spray nozzle 22
Output end is arranged towards 13 madial wall of vaporization chamber, is connected on the ring-type spray tube 21 for being continually fed into leading for heated material
Pipe 23.
By using above-mentioned technical proposal, after the material heating vaporization in vaporization chamber 13 rises, a part of material meeting
The structure on 13 madial wall of vaporization chamber, the material after heating imported into the cyclic annular spray tube being arranged in vaporization chamber 13 from conduit 23
In 21, it is set on the spray to 13 madial wall of vaporization chamber of several spray nozzles 22 on 21 outer tube wall of cyclic annular spray tube, uses
On the other hand material jet-action after heating is reduced to evaporator 1 on the one hand for coordinating the phenomenon that preventing fouling
The influence of evaporation efficiency does not need the ejecta of special disposal spray nozzle 22, and spraying effect is good and need not clear up, and prevents
The appearance of scale formation, it is simple and reliable for structure.
In the specific embodiment of the invention, 11 outside of the shell is provided with Matter Transfer pump 24, the Matter Transfer pump
24 output end is connect by conduit 23 with cyclic annular spray tube 21, and the input terminal of the Matter Transfer pump 24 is connected with feed pipe
25, the one end of the feed pipe 25 far from Matter Transfer pump 24 is through shell 11 and extends in heating room 12.
By using above-mentioned technical proposal, in order to further decrease energy consumption, the material for recycling heating is sprayed,
11 outside of shell is provided with Matter Transfer pump 24, and the output end of Matter Transfer pump 24 is connected by conduit 23 and cyclic annular spray tube 21
Connect, input terminal by feed pipe 25 with heating room 12 in material be connected to, to Matter Transfer pump 24 under the action of, by into
The material that expects pipe 25 extracts in heating room 12 is entered through conduit 23 in cyclic annular spray tube 21, to the madial wall to vaporization chamber 13
Lasting spray is carried out, while the material after spray falls back in heating room 12 and heated again, while temperature can also be extracted
The material that degree meets evaporating temperature is entered directly into and is evaporated in vaporization chamber 13, is improved the efficiency of evaporation, is accelerated whole production
Speed.
In the specific embodiment of the invention, the output end of the spray nozzle 22 tilts down setting, and with shell 11
Central axes are in 45 degree of angles.
By using above-mentioned technical proposal, in order to further increase the effect of spray, 13 madial wall of vaporization chamber is avoided the occurrence of
The phenomenon that fouling occur influences normal crystallization, and the output end of spray nozzle 22 is tilted down setting, and with the axis of shell 11
Line is in 45 degree angles, which ensure that the effect maximization of spray, the angle of generation to the madial wall of vaporization chamber 13 into
Row is reinforced being sprayed, and improves the effect of rinse spray.
In the specific embodiment of the invention, heater box 26,26 inside setting of the heater box are connected on the conduit 23
There is coil-like electric heating tube 27.
By using above-mentioned technical proposal, in order to accelerate the efficiency of evaporative crystallization, keep a part straight by the material of spray
Evaporative crystallization is connect, heater box 26 is also associated on conduit 23, material adds after entering in heater box 26 by coil-like electricity
It after the heating of heat pipe 27, enters back into vaporization chamber 13, which can be used for heated material, improve the efficiency of evaporative crystallization.
In the specific embodiment of the invention, recycled by Heat preservation between the primary heater 2 and secondary heater 3
Pipe is connected to, and the Heat preservation circulation pipe includes outer tube 31 and inner tube 32, and the outer tube 31 includes setting gradually from outside to inside
First insulating layer 301 and second thermal insulation layer 302, are provided with vacuum heat-insulating layer 33 between the second thermal insulation layer 302 and inner tube 32.
By using above-mentioned technical proposal, in order to avoid occurring the loss of thermal energy during cycle, followed to reduce
The efficiency of heating surface of ring is connected between primary heater 2 and secondary heater 3 by Heat preservation circulation pipe, to recycle
During heating, when the material of heating is by Heat preservation circulation pipe, internal heat will not quickly become separated in flight, and reduce when transmitting
Thermal losses sets Heat preservation circulation pipe to include outer tube 31 and inner tube 32, and outer tube 31 again including setting gradually from outside to inside
The first insulating layer 301 and second thermal insulation layer 302, the heated material conveyed in inner tube 32 pass through the heat-insulated of second thermal insulation layer 302
It acts on and then is kept the temperature by the first insulating layer 301 on the outside of second thermal insulation layer 302 is arranged, further improve guarantor
The heat-insulated effect of temperature, while vacuum heat-insulating layer 33 is also provided between second thermal insulation layer 302 and inner tube 32, make the loss of thermal energy
It is preferably minimized, does not influence the efficiency and effect of circulating-heating material.
In the specific embodiment of the invention, the axial direction in said inner tube 32 along Heat preservation circulation pipe is distributed in the shape of a spiral
Heating tube 34, the input terminal of the heating tube 34 is connected with steam lead 35 after sequentially passing through inner tube 32 and outer tube 31, described
The output end of heating tube 34 is connected with out steam pipe 36 after sequentially passing through inner tube 32 and outer tube 31.
In the specific embodiment of the invention, first insulating layer 301 be polyurethane foam or phenol formaldehyde foam, described second
Thermal insulation layer 302 is glass fibre or asbestos.
By using above-mentioned technical proposal, the axial direction along Heat preservation circulation pipe in inner tube 32 is distributed with spiral
Heating tube 34, the setting of the heating tube 34 is for heating the hydronic material by the conveying of Heat preservation circulation pipe, heating
The input terminal of pipe 34 is connected with steam lead 35 after sequentially passing through inner tube 32 and outer tube 31, and the output end of heating tube 34 sequentially passes through
Steam pipe 36 is connected with out after inner tube 32 and outer tube 31, hot steam is entered from steam lead 35 in inner tube 32, with adding for conveying
Thermal material exchanges heat, and the steam after the completion of exchanging heat is exported by going out steam pipe 36, on the one hand which improves material multi
The efficiency of heating surface of heating, keeps entire heating process quicker, on the other hand prevents temperature decline during transmission from bringing
Loss and reduce the reaction entirely heated, influence the speed of evaporative crystallization；In order to ensure the effect of insulation, first is protected
Warm layer 301 is set as polyurethane foam or phenol formaldehyde foam, sets second thermal insulation layer 302 to glass fibre or asbestos, effectively
Separate the transmission of heat.
Another aspect of the present invention provides a kind of material-heat-exchanging method of evaporating, concentrating and crystallizing system, it is characterised in that：
(1) the pre-heat treatment：Material passes sequentially through level-one preheater and two level preheater carries out preliminary the pre-heat treatment successively；
(2) heat：Added by the first feeding mouth injection of primary heater by (1) step treated material
After heat, evaporator is entered after being heated using secondary heater；
(3) it is heated at reflux processing：Residual logistics of the material after evaporator evaporating, concentrating and crystallizing after heating is again through one
Second feeding mouth of grade heater is back to primary heater and is heated, and repeats the process of (2) step.
The heat transfer effect of material is effectively raised by the Multi-stage heating to material by using above-mentioned technical proposal.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of evaporating, concentrating and crystallizing system is connected with feeding-passage, level-one preheater, two level preheater in turn by feedstock direction
And heat-exchange system, it is characterised in that：The heat-exchange system includes evaporator, primary heater, secondary heater and forces to follow
Ring pumps, and the primary heater, forced circulation pump and secondary heater are followed in series to form loop, the discharging of two level preheater
Mouth is connect with the first feeding mouth of primary heater, and the second feeding mouth of primary heater is connect with evaporator, secondary heater
Discharge port connect with evaporator, the discharge port of secondary heater and the interconnecting piece of evaporator are higher than the feeding mouth of primary heater
Be arranged with the interconnecting piece of evaporator, the caliber of primary heater and the caliber of secondary heater respectively with the entrance of forced circulation pump
It is adapted.
2. a kind of evaporating, concentrating and crystallizing system according to claim 1, it is characterised in that：The evaporator include shell with
And heating room inside housings and vaporization chamber are set, the second feeding mouth of the primary heater is connect with heating room, described
The discharge port of secondary heater is connect with vaporization chamber, and the vaporization chamber setting is above heating room, setting at the top of the vaporization chamber
Have a demister, be provided with two pieces of bafflers relatively disposed in parallel up and down on the indoor side wall of the heating, two pieces of bafflers it
Between be formed with heating chamber, several vertical arrangement both ends are provided in the heating chamber and extend through the heating tubes of two pieces of bafflers
Beam, several heating tube bundle settings spaced in parallel to each other are provided with one in the middle part of the heating room and among two pieces of bafflers
Central circulating tube up and down, it is described to heat the heating being provided on outdoor side wall for being passed through in heating steam to heating chamber
Steam inlet tube is provided with the condensed water outlet pipe being connect with heating chamber bottom, the central circulating tube on the outdoor side wall of the heating
It top and is provided in the vaporization chamber in hemispherical evaporation deflector, in the vaporization chamber and the setting below demister
It is useful for the spray assemblies of side wall in spraying and sprinkling evaporation room.
3. a kind of evaporating, concentrating and crystallizing system according to claim 2, it is characterised in that：The spray assemblies include setting
Cyclic annular spray tube in vaporization chamber, it is circumferentially equally spaced from each other on the ring-type spray tube outer tube wall to spray from being provided with several sprays
The output end of head, the spray nozzle is arranged towards vaporization chamber madial wall, is connected on the ring-type spray tube for persistently leading to
Enter the conduit of heated material.
4. a kind of evaporating, concentrating and crystallizing system according to claim 3, it is characterised in that：The hull outside is provided with object
Expect that circulating pump, the output end of the Matter Transfer pump are connect by conduit with cyclic annular spray tube, the input of the Matter Transfer pump
End is connected with feed pipe, and the feed pipe runs through shell far from one end that Matter Transfer pumps and extends in heating room.
5. a kind of evaporating, concentrating and crystallizing system according to claim 3 or 4, it is characterised in that：The spray nozzle it is defeated
Outlet tilts down setting, and is in 45 degree of angles with the central axes of shell.
6. a kind of evaporating, concentrating and crystallizing system according to claim 4, it is characterised in that：Heating is connected on the conduit
Case, the heater box are internally provided with coil-like electric heating tube.
7. a kind of evaporating, concentrating and crystallizing system according to claim 1, it is characterised in that：The primary heater and two level
It is connected to by Heat preservation circulation pipe between heater, the Heat preservation circulation pipe includes outer tube and inner tube, the outer tube packet
The first insulating layer set gradually from outside to inside and second thermal insulation layer are included, vacuum is provided between the second thermal insulation layer and inner tube
Thermal insulation layer.
8. a kind of evaporating, concentrating and crystallizing system according to claim 7, it is characterised in that：Along Heat preservation in said inner tube
The axial direction of circulation pipe is distributed with spiral heating tube, and the input terminal of the heating tube connects after sequentially passing through inner and outer tubes
There is a steam lead, the output end of the heating tube is connected with out steam pipe after sequentially passing through inner and outer tubes.
9. a kind of evaporating, concentrating and crystallizing system according to claim 7 or 8, it is characterised in that：First insulating layer is
Polyurethane foam or phenol formaldehyde foam, the second thermal insulation layer are glass fibre or asbestos.
10. a kind of material-heat-exchanging method of evaporating, concentrating and crystallizing system as described in claim 1, it is characterised in that：
(1) the pre-heat treatment：Material passes sequentially through level-one preheater and two level preheater carries out preliminary the pre-heat treatment successively；
(2) heat：It is heated by the first feeding mouth injection of primary heater by (1) step treated material
Afterwards, evaporator is entered after being heated using secondary heater；
(3) it is heated at reflux processing：Residual logistics of the material after evaporator evaporating, concentrating and crystallizing after heating adds through level-one again
Second feeding mouth of hot device is back to primary heater and is heated, and repeats the process of (2) step.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810862581.8A CN108671567A (en) | 2018-08-01 | 2018-08-01 | A kind of evaporating, concentrating and crystallizing system and its heat-exchange method |
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| CN201810862581.8A CN108671567A (en) | 2018-08-01 | 2018-08-01 | A kind of evaporating, concentrating and crystallizing system and its heat-exchange method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113877221A (en) * | 2021-11-04 | 2022-01-04 | 洛阳君江建材科技有限公司 | Red mud alkali lye evaporation concentration system |
| CN117654065A (en) * | 2024-02-02 | 2024-03-08 | 浙江赛勒新能源材料有限公司 | Silicon tetrachloride vaporization system and vaporization process for polysilicon cold hydrogenation device |
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Application publication date: 20181019 |