CN104289004B - A kind of efficient bidirectional flow plate type rising falling film evaporator - Google Patents
A kind of efficient bidirectional flow plate type rising falling film evaporator Download PDFInfo
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- CN104289004B CN104289004B CN201410588609.5A CN201410588609A CN104289004B CN 104289004 B CN104289004 B CN 104289004B CN 201410588609 A CN201410588609 A CN 201410588609A CN 104289004 B CN104289004 B CN 104289004B
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Abstract
The invention discloses a kind of bidirectional flow plate type rising falling film evaporator, comprise the plate bundle for heat exchange, plate is intrafascicular comprises the plate groups stacking arrangement, each plate groups comprises the first plate, the second plate, the 3rd plate and the 4th plate that are arranged in order, and between each plate, gap-forming material rises film runner, steam flow channel and material falling liquid film runner successively; Left and right sides on each plate all offers the consistent opening in position, the passage that each opening form respectively saturated vapor passage, not concentrated material channel, concentrate and indirect steam passage, condensed water and on-condensible gas passage and passes through for the concentrate in process and indirect steam, and each passage being positioned at plate the same side defines a set of evaporative condenser system.The present invention adopts bidirectional flow to carry out evaporative condenser, can carry out the evaporation and concentration of different material simultaneously, add the material treating capacity of unit interval, adopts two elevating membrane evaporative condenser that evaporation efficiency is improved simultaneously, also saves the device space simultaneously.
Description
Technical field
The invention belongs to heat exchanger technology field, be specifically related to a kind of efficient bidirectional flow plate type rising falling film evaporator.
Background technology
Plate-type evaporator, as the evaporation concentration equipment of a kind of advanced person, is mainly used in the moisture in rare material, by the transmission of steam high temperature enthalpy, moisture is evaporated, thus obtains concentrated material, and be widely used in chemistry and pharmaceuticals industry, such as organic acid, the purification of amine and alcohol etc.Be applied in Food & Drink industry, concentrating of such as dairy products, fruit juice, sugar etc.Also natural organic products industry is applied to, such as fermentation industry, the evaporation of glue, thickness water etc.Also be applied to the Heisui River evaporation in paper-making industry and concentrate.Along with modernization of industry technology development, plate-type evaporator application will be more and more extensive.
Along with the development of the industries such as China's chemical industry, pharmacy, light industry, food, the demand of industry-by-industry to plate type rising falling film evaporator is increasing, and treating capacity requires also increasing.Along with making rapid progress of technology, plate-type evaporator can carry out also constantly requiring under the feature of high throughput operation that heat transfer efficiency is high, and for reducing power consumption, require that plate-type evaporator resistance drop is little, from common rare feed liquid to the liquid of high thickness, all can process from the solid particle containing minor diameter to the suspension containing fiber.Therefore the plate-type evaporator that unit interval feed throughput is large, high temperature resistant, high pressure resistant, heat transfer efficiency is high, resistance drop is little, power consumption is low, can carry out clearing up fast is provided to seem very important.
Existing plate type rising falling film evaporator, plate designs structures shape saturated vapor, condensed water, by the flow direction of the fluid mechanics that is concentrated and indirect steam after evaporative fluid material and evaporation, each plate all only have the outlet of a saturated vapor entrance, a material concentrate and indirect steam, a untreated material inlet and a condensation-water drain, and lift-film evaporator can only carry out a kind of process of material, and treating capacity in the unit interval is little, steam utilization is low and evaporation efficiency is low.Also there is the low problem of bearing capacity in lift-film evaporator simultaneously.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, a kind of efficient bidirectional flow plate type rising falling film evaporator is provided, the present invention adopts bidirectional flow to carry out evaporative condenser, the evaporation and concentration of different material can be carried out simultaneously, add the material treating capacity of unit interval, adopt two elevating membrane evaporative condenser that evaporation efficiency is improved simultaneously, also save the device space simultaneously.
For solving the problems of the technologies described above, the technical solution used in the present invention is, a kind of bidirectional flow plate type rising falling film evaporator, comprise the plate bundle for heat exchange, plate is intrafascicular comprises multiple plate groups stacking arrangement, and forming steam flow channel between adjacent plate group, each plate groups comprises the first plate, the second plate, the 3rd plate and the 4th plate that are arranged in order, left and right sides on each plate all offers a saturated vapor inlet port, not concentrated material inlet port, a concentrate and indirect steam outlet and a condensed water and on-condensible gas outlet, the top left and right sides of the second plate and the 3rd plate all offers an opening passed through for the concentrate in process and indirect steam, opening on each plate to offer position corresponding consistent, and offer the corresponding consistent opening in position and form respectively saturated vapor passage, not concentrated material channel, concentrate and indirect steam passage, condensed water and on-condensible gas passage and the passage passed through for the concentrate in process and indirect steam, and each passage being positioned at plate the same side defines a set of evaporative condenser system, the evaporative condenser system of plate both sides is symmetrical about the vertical axis of plate,
This first plate is provided with first passage spacer assembly, first passage spacer assembly makes to form steam flow channel between two adjacent plates, and make concentrate and indirect steam passage and not concentrated material channel independent separately, and above-mentioned each passage is all separated with steam flow channel, also make saturated vapor passage, steam flow channel and condensed water and on-condensible gas passage be connected successively; Second plate is provided with second channel spacer assembly, second channel spacer assembly makes to form material between two adjacent plates and rises film runner, and make saturated vapor passage, concentrate and indirect steam passage and condensed water and on-condensible gas passage independent separately, and make above-mentioned each passage all rise film runner with material to separate, also make not concentrate material channel, material rises film runner and be connected successively for the passage that the concentrate in process and indirect steam pass through; 3rd plate is provided with third channel spacer assembly, third channel spacer assembly makes to form steam flow channel between two plates, and make concentrate and indirect steam passage and not concentrated material channel independent separately, and above-mentioned each passage is all separated with steam flow channel, also make saturated vapor passage, steam flow channel and condensed water and on-condensible gas passage be connected successively; 4th plate is provided with four-way spacer assembly, four-way spacer assembly makes to form material falling liquid film runner between two plates, and make saturated vapor passage, condensed water and on-condensible gas passage and concentrated material channel separately independently, and above-mentioned each passage is all separated with material falling liquid film runner, be also used in passage, material falling liquid film runner and concentrate that concentrate in process and indirect steam pass through and indirect steam passage is connected successively;
The entrance end of this saturated vapor passage, condensed water and on-condensible gas passage, concentrated material channel and concentrate and indirect steam passage is all connected with exterior line by flange; Saturated vapor channel setting is in plate bundle top, not concentrated material channel setting is in plate bundle bottom, concentrate and indirect steam channel setting are in plate bundle bottom, condensed water and on-condensible gas channel setting are in plate bundle base angle place, and the channel setting passed through for the concentrate in process and indirect steam is in the top of the second plate and the 3rd plate.
Further, the middle part that this steam flow channel, material rise film runner and material falling liquid film runner is provided with for separating of the spacer assembly with its space, both sides, left and right.
Further, the both sides of the edge place of this each plate all offers stress hole, and stress hole is positioned on the horizontal axis of each plate.
Further, the side of this each plate vertically offers the outlet of the first saturated vapor import and the first concentrate and indirect steam, the opposite side of each plate vertically offers the outlet of the second saturated vapor import and the second concentrate and indirect steam, first saturated vapor import, the outlet of the first concentrate and indirect steam, the outlet of the second saturated vapor import and the second concentrate and indirect steam is all arranged at sheet edges place, the lower end edge horizontal direction of each plate is provided with the not concentrated material inlet of the first not concentrated material inlet and second, the base angle place, left and right, lower end of each plate offers the first condensed water and on-condensible gas outlet and the second condensed water and on-condensible gas and exports, the top of the second plate and the 3rd plate is provided with the first import passed through for concentrate in process and indirect steam and the second import passed through for concentrate in process and indirect steam in the horizontal direction.
Further, this first passage spacer assembly comprises the first draw-in groove of the first plate of setting, is provided with the first sealing gasket in the first draw-in groove; Second channel spacer assembly comprises the second draw-in groove be arranged on the second plate, the second sealing gasket is provided with in second draw-in groove, third channel spacer assembly comprises the 3rd draw-in groove be arranged on the 3rd plate, the 3rd sealing gasket is provided with in 3rd draw-in groove, four-way spacer assembly comprises the 4th draw-in groove be arranged on the 4th plate, is provided with the 4th sealing gasket in the 4th draw-in groove; Each draw-in groove is all arranged on the surrounding of heat exchange zone and each opening on each plate, and the concaveconvex structure that each draw-in groove is suppressed by its both sides surrounds.
Further, this spacer assembly comprises the groove offered along direction, plate vertical axis, and groove is used for plate to be divided into the first heat exchange zone and the second heat exchange zone, is provided with the 5th sealing gasket matched with it in groove.
Further, the structure of this first heat exchange zone and the second heat exchange zone is buckplate structure or corrugated board structures.
Further, this stress hole comprises the first stress hole and the second stress hole that are arranged on each plate left and right sides, and the stress hole of each is all arranged on sheet edges place, and each stress hole is uncovered shape outside plate.
Further, this each plate is rectangle, and the opening shape of each condensed water and on-condensible gas outlet be square, and this foursquare angle is fillet, and the shape of other each opening is rectangle.
Further, this plate bundle is arranged between fixing strong plate and the strong plate of activity, plate bundle also comprises the end plate adjacent with fixing strong plate, the blind plate adjacent successively with the strong plate of activity and card, fix and connected by fishbolt between strong plate and the strong plate of activity, the upper end of movable strong plate is connected with tourelle, and the intrafascicular plate upper end of plate to be hung with the top guide bar of framework by suppending hole and is connected; The intrafascicular plate lower end of plate is connected with the lower guide rod of framework by locating hole.
A kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention, tool has the following advantages: 1. adopt bidirectional flow to carry out the evaporation and concentration of material, both a kind of evaporation and concentration of material can have been carried out, the evaporation and concentration of two kinds of different materials can be carried out again simultaneously, the work originally needing two equipment just can complete is merged into a platen type lift-film evaporator and has come.Improve the treating capacity of material in the unit interval, improve evaporation efficiency.And save the energy.Also can save the one-time investment expense of equipment simultaneously, save occupation of land space, saved construction investment.From structural principle, steam is progressively condensation from top to bottom, and condensed water is discharged smooth and easy, does not produce water hammer, thus shockproof.Also achieve steam simultaneously and in evaporimeter, realized by evaporation material the process that both direction carries out heat exchange simultaneously.2. rise membrane portions from bottom to top to flow, falling film part from top to bottom flows, and forms liquid film on runner both sides plate heat exchange zone I and II, and implements two elevating membrane evaporation.Adopt elevating membrane Steaming structure, beneficial effect does not concentrate fluid mechanics parallel connection when entering runner, and fluid mechanics can be made to be uniformly distributed, the thickness of liquid film formed is even, be of value to material evaporation and should not fouling and make sealing factor little in plate heat exchange zone, condensation rate is fast, and evaporation efficiency is high.3. each opening is opened in sheet edges place, and namely in the surrounding of effective heat-transfer area, this construction might be advantageous is entering in plate runner can not produce dead angle in fluid mechanics, heat exchange area can be made to maximize simultaneously.4. in the middle part of each plate, both sides all arrange stress hole, stress hole is nearest from two ends plate packing standing groove, after compressing plate bundle, can more effectively seal exchange media and can not reveal by fishbolt, pressure of equipment ability is improved, improves the security that equipment runs.5. the plate in heat exchange zone is suppressed with concavo-convex hemisphere, after adjacent two plates assembling, the hemispherical element of its bossing is contacted with each other and forms supporting, negative area half billiard table shaped element part also contacts with each other and forms supporting, concavo-convex half billiard table element on plate forms a large amount of supporting-points, plate rigidity is increased substantially, very high interior pressure can be born; The webbed runner of shape between plate, not easily blocks when being applicable to process the process of the process of fibre-bearing material and high-viscosity material.6. on plate, except condensed water and on-condensible gas outlet, each opening is set to rectangle, the maximized area utilizing plate of energy, ensure that the area of heat exchange zone maximizes, increases the inlet of saturated vapor and the treating capacity of material simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of efficient bidirectional flow plate type rising falling film evaporator plate bundle of the present invention.
Fig. 2 is the structural representation of a kind of bidirectional flow plate type rising of the present invention falling film evaporator first plate.
Fig. 3 is the structural representation of a kind of efficient bidirectional flow plate type rising falling film evaporator second plate of the present invention.
Fig. 4 is the structural representation of a kind of efficient bidirectional flow plate type rising falling film evaporator the 3rd plate of the present invention.
Fig. 5 is the structural representation of a kind of efficient bidirectional flow plate type rising falling film evaporator the 4th plate of the present invention.
Fig. 6 is the structural representation of a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention.
Fig. 7 is the front view of a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention.
Fig. 8 is the profile of the plate groups of a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention.
Fig. 9 a is a part for the flow chart of a kind of material of evaporation and concentration of a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention.
Fig. 9 b is another part of the flow chart of a kind of material of evaporation and concentration of a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention.
Figure 10 a is a part for the flow chart of a kind of efficient bidirectional flow plate type rising falling film evaporator evaporation and concentration of the present invention two kinds of different materials.
Figure 10 b is another part of the flow chart of a kind of efficient bidirectional flow plate type rising falling film evaporator evaporation and concentration of the present invention two kinds of different materials.
Detailed description of the invention
Embodiment 1
As shown in Figure 1, a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention steams, comprise the plate bundle 1 for heat exchange, described plate bundle 1 comprises multiple plate groups stacking arrangement, and forming steam flow channel between adjacent plate group, plate groups described in each comprises the first plate A, the second plate B, the 3rd plate C and the 4th plate D that are arranged in order, left and right sides on plate described in each all offers a saturated vapor inlet port, not concentrated material inlet port, a concentrate and indirect steam outlet and a condensed water and on-condensible gas outlet, the top left and right sides of described second plate B and the 3rd plate C all offers an opening passed through for the concentrate in process and indirect steam, opening on plate described in each to offer position corresponding consistent, and offer the corresponding consistent opening in position and form respectively saturated vapor passage a, not concentrated material channel d, concentrate and indirect steam passage b, condensed water and on-condensible gas passage c and the passage passed through for the concentrate in process and indirect steam, and each passage being positioned at plate the same side defines a set of evaporative condenser system, the evaporative condenser system of described plate both sides is symmetrical about the vertical axis of plate.First plate A is provided with first passage spacer assembly, described first passage spacer assembly makes to form steam flow channel between two adjacent plates, and make concentrate and indirect steam passage b and not concentrated material channel d independent separately, and above-mentioned each passage is all separated with steam flow channel, also make saturated vapor passage a, steam flow channel and condensed water and on-condensible gas passage c be connected successively; Described second plate B is provided with second channel spacer assembly, described second channel spacer assembly makes to form material between two adjacent plates and rises film runner, and make saturated vapor passage a, concentrate and indirect steam passage b and condensed water and on-condensible gas passage c independent separately, and make above-mentioned each passage all rise film runner with material to separate, also make not concentrate material channel d, material rises film runner and be connected successively for the passage that the concentrate in process and indirect steam pass through; Described 3rd plate C is provided with third channel spacer assembly, described third channel spacer assembly makes to form steam flow channel between two plates, and make concentrate and indirect steam passage b and not concentrated material channel d independent separately, and above-mentioned each passage is all separated with steam flow channel, also make saturated vapor passage a, steam flow channel and condensed water and on-condensible gas passage c be connected successively; Described 4th plate D is provided with four-way spacer assembly, described four-way spacer assembly makes to form material falling liquid film runner between two plates, and make saturated vapor passage a, condensed water and on-condensible gas passage c and concentrated material channel d separately independently, and above-mentioned each passage is all separated with material falling liquid film runner, be also used in passage, material falling liquid film runner and concentrate that concentrate in process and indirect steam pass through and indirect steam passage b is connected successively; The entrance end of described saturated vapor passage a, condensed water and on-condensible gas passage c, concentrated material channel d and concentrate and indirect steam passage b is all connected with exterior line by flange; Described saturated vapor passage a is arranged at plate bundle top, described not concentrated material channel d is arranged at plate bundle bottom, described concentrate and indirect steam passage b are arranged at plate bundle bottom, described condensed water and on-condensible gas passage c are arranged at plate bundle base angle place, and the described channel setting passed through for the concentrate in process and indirect steam is in the top of the second plate B and the 3rd plate C.
As shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention steams.First passage spacer assembly comprises the first draw-in groove 1-14A of the first plate A of setting, is provided with the first sealing gasket 1-14A-1 in described first draw-in groove 1-14A; Described second channel spacer assembly comprises the second draw-in groove 1-14B be arranged on the second plate B, the second sealing gasket 1-14B-1 is provided with in described second draw-in groove 1-14B, described third channel spacer assembly comprises the 3rd draw-in groove 1-14C be arranged on the 3rd plate C, the 3rd sealing gasket 1-14C-1 is provided with in described 3rd draw-in groove 1-14C, described four-way spacer assembly comprises the 4th draw-in groove 1-14D be arranged on the 4th plate D, is provided with the 4th sealing gasket 1-14D-1 in described 4th draw-in groove 1-14D; Draw-in groove described in each is all arranged on the surrounding of heat exchange zone and each opening on each plate, and the concaveconvex structure that draw-in groove described in each is suppressed by its both sides surrounds.The middle part that steam flow channel, material rise film runner and material falling liquid film runner is provided with for separating of the spacer assembly with its space, both sides, left and right.Described spacer assembly comprises the groove 1-13 offered along direction, plate vertical axis, and described groove 1-13 is used for plate to be divided into the first heat exchange zone I and the second heat exchange zone II, is provided with the 5th sealing gasket 1-13-1 matched with it in described groove 1-13.The structure of described first heat exchange zone I and the second heat exchange zone II is buckplate structure or corrugated board structures.
A kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention steams, the side of plate described in each vertically offers the outlet 1-3 of the first saturated vapor import 1-1 and the first concentrate and indirect steam, the opposite side of plate described in each vertically offers the outlet 1-4 of the second saturated vapor import 1-2 and the second concentrate and indirect steam, first saturated vapor import 1-1, the outlet 1-3 of the first concentrate and indirect steam, the outlet 1-4 of the second saturated vapor import 1-2 and the second concentrate and indirect steam is all arranged at sheet edges place, the lower end edge horizontal direction of plate described in each is provided with the not concentrated material inlet 1-8 of the first not concentrated material inlet 1-7 and second, the base angle place, left and right, lower end of plate described in each offers the first condensed water and on-condensible gas outlet 1-5 and the second condensed water and on-condensible gas outlet 1-6, the top of described second plate B and the 3rd plate C is provided with the import 1-10 that the first import 1-9 and second passed through for concentrate in process and indirect steam passes through for concentrate in process and indirect steam in the horizontal direction.The both sides of the edge place of plate described in each all offers stress hole, and described stress hole is positioned on the horizontal axis of each plate.Described stress hole comprises the first stress hole 1-11 and the second stress hole 1-12 that are arranged on each plate left and right sides, and the stress hole described in each is all arranged on sheet edges place, and stress hole described in each is uncovered shape outside plate.
As shown in Figure 6 and Figure 7, a kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention steams, plate described in each is rectangle, the opening shape of condensed water described in each and on-condensible gas outlet is square, and this foursquare angle is fillet, the shape of the opening described in other each is rectangle.Described plate bundle 1 is arranged between fixing strong plate 2 and the strong plate 3 of activity, described plate bundle 1 also comprises the end plate 8 adjacent with fixing strong plate 2, the blind plate 10 adjacent successively with the strong plate of activity 3 and card 9, described fixing is connected by fishbolt 6 between strong plate 2 and the strong plate 3 of activity, the upper end of the strong plate 3 of described activity is connected with tourelle 5, and the plate upper end in described plate bundle 1 is hung with the top guide bar 4 of framework by suppending hole 1-15 and is connected; Plate lower end in described plate bundle 1 is connected with the lower guide rod 7 of framework by locating hole 1-16.On each plate, stress hole is respectively the first stress hole 1-11 and the second stress hole 1-12.
A kind of bidirectional flow plate type rising of the present invention falling film evaporator steams, as shown in Figure 8, for a-a and b-b profile between plate groups, not concentrated material 3., saturated vapor 1. and concentrated material and indirect steam 4. flow in runner between adjacent panels, in all multiple flow passages that the first plate A and the second plate B combines, 3. the runner that first plate A and the second plate B combines enters not concentrated material, 1. the runner so combined between the second plate B and the 3rd plate C must walk saturated vapor, concentrate and indirect steam is walked 4. between 3rd plate C and the 4th plate D, 1. the runner that so the 4th plate D and the first plate A combines must walk saturated vapor.Can make saturated vapor 1., 4. 3. non-fluid mechanics carry out heat exchange with concentrate and indirect steam, thus reach the object of fluid mechanics evaporation in staggered runner.
A kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention, as shown in figures 9 a and 9b, for a kind of material and steam carry out the process of heat exchange.Concrete heat exchanging process is that 1. fresh saturated vapor divides two to flowing to into saturated vapor passage a, and be dispensed to saturated vapor runner at interval of a material flow path, until blind plate 10 (this plate is that the plate that all runner holes are not washed open is called blind plate), the saturated vapor meanwhile in saturated vapor passage a then flows through plate heat-transfer area along the saturated vapor runner of several parallel connections.After saturated vapor mutual entry both sides steam flow channel first heat exchange zone I and the second heat exchange zone II, the saturated vapor 1. from top to bottom progressively condensation along plate face, condensed water and on-condensible gas is formed 2. along some steam flow channels in runner, collect and enter condensed water and on-condensible gas passage c, and be incorporated to total condensate pipe by condensed water and on-condensible gas passage c and outside output equipment.3. the not concentrated material carrying out heat exchange with steam divides two too to flowing to into not concentrated material channel d, and be dispensed in material flow path at interval of a steam side runner, until card 9 (this plate be bottom holes do not wash open be called card), and meanwhile, not concentrated material in not concentrated material channel d, then along the fluid mechanics side runner of several parallel connections, flows through plate heat-transfer area.After heat first heat exchange zone I in concentrated material mutual entry material flow path and the second heat exchange zone II, 3. not concentrated material from bottom to top constantly evaporates along plate face, the concentrated material of formation and indirect steam are 4., complete the evaporation and concentration rising membrane portions, then rise the concentrated material of membrane portions and indirect steam 4. through the second plate B and the 3rd plate C of top perforate, enter the falling liquid film runner between the 3rd plate C and the 4th plate D, continue from top to bottom constantly to evaporate along plate face, concentrate in formation falling liquid film runner and indirect steam are 4., and by the falling liquid film runner in the elevating membrane runner of some groups of parallel connections, collect and enter lateral condensation material and indirect steam passage b, and flowed out by lateral condensation material and indirect steam passage b, be incorporated to house steward and outside output equipment.
Embodiment 2
The structure of a kind of efficient bidirectional flow plate type rising falling film evaporator in the present embodiment is identical with the structure in embodiment 1, difference to be the present embodiment be two kinds of fluid mechanics of different nature and two kinds of steam of different nature carry out the process of heat exchange, as shown in figures 10 a and 10b, concrete heat exchanging process is that 1. fresh saturated vapor enters saturated vapor entrance on the left of fixing strong plate 2, film runner or material falling liquid film runner is risen at interval of a material along saturated vapor passage a1, and be dispensed to several steam flow channels, until blind plate 10, 1. saturated vapor meanwhile in saturated vapor passage a1 then flows through plate heat-transfer area along the saturated vapor runner of several parallel connections, after saturated vapor enters the first heat exchange zone I, the saturated vapor 1. from top to bottom progressively condensation along plate face, steam condensate (SC) and on-condensible gas is formed 2. in runner, collect along some saturated vapor runners and enter condensed water and on-condensible gas passage c1, and by outside fixing strong plate 2 left lower steam condensate (SC) adapter device for transferring.With the not concentrated material of saturated vapor heat exchange 3., in like manner enter the not concentrated material inlet of left lower in fixing strong plate 2, also being dispensed to material at interval of a steam flow channel successively along concentrated material channel d1 rises in film runner, one, interval steam flow channel and flow in material falling liquid film runner again, and many groups are in parallel until card 9, not concentrated material meanwhile in concentrated material channel d1 3. then rises film runner along the material of several parallel connections and material falling liquid film runner flows through plate heat-transfer area, after not concentrated material enters and rises film runner first heat exchange zone I, 3. not concentrated fluid mechanics from bottom to top constantly evaporates along plate face, the concentrated material of formation and indirect steam are 4., complete the evaporation and concentration rising membrane portions, then rise the concentrated material of membrane portions and indirect steam 4. through the first import 1-9 passed through for concentrate in process and indirect steam on the second plate B and the 3rd plate C top, enter material falling liquid film runner.Continue from top to bottom constantly to evaporate along plate face, form concentrate and indirect steam 4. and by the falling liquid film runner in the elevating membrane runner of the some groups of parallel connections in left side, convergence enters left side concentrate and indirect steam passage b1, and by left channel, discharge blending agent through the concentrate of fixing strong plate 2 lower left quarter and indirect steam outlet, then concentrate and indirect steam are entered separator be separated.Indirect steam after separation is compressed can be used as new thermal source, concentrate after separation need be carried out secondary more further and concentrate.So the indirect steam after being separated is concentrated with being separated rear concentrate and again entering in each runner in right side of board-like lifting mould evaporimeter to evaporate again again.Concrete steps be by be separated after indirect steam be 5. re-used as new thermal source, again enter the saturated vapor entrance on the right side of fixing strong plate 2, along saturated vapor passage a2, rise film runner or material falling liquid film runner at interval of a material and be dispensed to some steam flow channels, until blind plate 10, and indirect steam meanwhile in saturated vapor passage a2 5., steam flow channel then along several parallel connections flows through plate heat-transfer area, after indirect steam enters right side steam flow channel second heat exchange zone II, the indirect steam 5. from top to bottom progressively condensation along plate face, indirect steam condensed water and on-condensible gas is formed 2. in runner, and collect along some steam flow channel bottoms and enter condensed water and on-condensible gas passage c2, and by outside fixing strong plate lower right side condensed water adapter device for transferring.6. the secondary carrying out heat exchange with indirect steam more concentrated material in like manner enters the concentrated material inlet of fixing strong plate 2 lower right side.Secondary more concentrated material, 6. along concentrated material channel d2, and is dispensed at interval of a steam flow channel that material rises in film runner, one, interval steam flow channel and flow in material falling liquid film runner, until card 9 more successively.And the secondary concentrated material more meanwhile do not concentrated in material channel d2, then rise film runner along several materials and flow through heat transfer plate face, secondary more concentrated material enters after material rises the second heat exchange zone II of film runner, 6. secondary more concentrated fluid mechanics from bottom to top constantly evaporates along plate face, 7. formation more concentrated material and rear indirect steam complete the evaporation and concentration rising membrane portions, then rise the concentrated again material of membrane portions and rear indirect steam 7. through the second import 1-10 passed through for concentrate in process and indirect steam on the second plate B and the 3rd plate C top, then material falling liquid film runner is entered, continue from top to bottom constantly to evaporate along plate face, the final concentrated material of formation and rear indirect steam are 7., and by the falling liquid film runner in the elevating membrane runner of the some groups of parallel connections in right side, collect and enter right side concentrate and indirect steam passage, and discharge final concentrated material and rear indirect steam by concentrate and indirect steam passage b2, so far the process that two kinds of heterogeneity fluid mechanics and two kinds of steam of different nature carry out heat exchange is completed.
A kind of bidirectional flow plate type rising of the present invention falling film evaporator, same plate bundle adopts two cover evaporative condenser systems, namely bidirectional flow is adopted to carry out evaporative condenser, in the middle of plate, a groove 1-13 is set, this groove 1-13 is connected with periphery draw-in groove, form an entirety, in groove 1-13, be furnished with sealing gasket, heat exchange plate is divided into two independently the first heat exchange zone I second heat exchange zones II.Groove 1-13 can one be connected with the sealing gasket in draw-in groove, also can be separately independently, but in use, the end of each sealing gasket is closely adjacent.Be divided into by heat exchange plate the benefit of two independently the first heat exchange zone I second heat exchange zones II to be, a kind of fluid mechanics of evaporation can be processed simultaneously, also can evaporation process two kinds of fluid mechanics of different nature simultaneously.When evaporation and concentration two kinds of fluid mechanics of different nature, the indirect steam be separated is re-used as thermal source, saves the energy.Originally the work needing two equipment just can complete is merged into a platen type evaporimeter to have come.Improve evaporation efficiency, improve the treating capacity of material in the unit interval, the one-time investment expense of equipment can have been saved simultaneously, saved occupation of land space, saved construction investment.Steam is progressively condensation from top to down, and condensate water is discharged happy, does not produce water hammer, thus shockproof.Rubber gasket is used as sealing on the one hand, prevents material medium from revealing.On the other hand make it between two plates, form certain interval, as steam and fluid mechanics passage and form heat exchange.The shape of the rubber gasket in groove 1-13 and each draw-in groove always determines according to steam medium, fluid mechanics, steam condensate, concentrate and walking of indirect steam material.
A kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention, also be with the difference of prior art, for position that each opening forming passage is offered on plate, each opening of composition passage is all opened in the edge of plate, and be all arranged in around the heat exchange zone for evaporative condenser, this heat exchange zone is referred to as effective heat transfer area district, the benefit of such plate designs is: fluid mechanics can not produce dead angle in runner entering between plate, heat exchange area can be made to maximize simultaneously.
A kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention, in plate bundle 1, each plate adopts the metal sheet of 0.7mm-1.5mm to make, in heat exchange zone, concavo-convex alternate hemisphere is suppressed by casted die mould, hemispheroidal diameter is 14mm ~ 36mm, these concavo-convex hemisphere structures, with equilateral triangle arrangement, between hemisphere structural detail, centre distance diameter is 22mm ~ 46mm, be greater than the diameter of spheroid, concavo-convex hemisphere structural detail along the vertical center line of plate, symmetrically arranged.When such layout is to assemble, after adjacent two plate overlap assemblies, the hemispherical dome structure element of its bossing being contacted with each other and forms supporting.Negative area half billiard table shape structural detail also contacts with each other and forms supporting.By forming the runner of 3.6mm ~ 16mm between this plate supported each other, steam and fluid mechanics can be made to pass through.Material is netted flowing along plate face, velocity magnitude and direction constantly change, thus the strong turbulence of material is evoked, heat transfer efficiency is improved, hemispherical supporting between plate in heat transfer zone is counted, and equals the concavo-convex half billiard table shaped element number of packages on plate, owing to forming these a large amount of supporting-points, plate rigidity is increased substantially, very high interior pressure can be born.This sheet structure, the runner of formation, can be applicable to well, the process of the process of fibre-bearing material and high-viscosity material and not easily blocking, the vapour phase flow resistance of corresponding steam side runner and the liquid phase flow resistance of fluid mechanics side runner also less.
A kind of efficient bidirectional flow plate type rising falling film evaporator of the present invention, during actual use, by carrying out thermodynamic metering to by the operating mode of evaporation material, determines that heat transfer area determined plate quantity afterwards.The plate often do not waited to number amount up to a hundred by tens form plate bundle 1, and plate can make plate be suspended on top guide bar 4 by the suppending hole 1-15 of upper end to move freely, and is convenient to check, change plate, also conveniently cleans heat transferring plate.Plate lower end in plate bundle 1 is connected with the lower guide rod 7 of framework by locating hole 1-16.The plate type rising falling film evaporator of this structure is conducive to quick assembling and dismounting, is conducive to equipment and carries out cleaning and overhauling.In the sheet of each limit, the shape of the not concentrated material inlet 1-6 of the first not concentrated material inlet 1-5 and second is rectangle, specification is mm75-380mm (length) × 30mm-180mm (wide), to increase the treating capacity of material, first saturated vapor import 1-1 and the second saturated vapor import 1-2 is rectangle, specification is 200mm-850mm (length) × 85mm-350mm (wide), in order to increase quantity of steam, improve the thermal efficiency, shorten evaporation time (to sensible medium), the outlet 1-3 of the first concentrate and indirect steam and the outlet 1-4 of the second concentrate and indirect steam is rectangle, its specification is 220mm-920mm (length) × 85mm-350mm (wide), to meet when being produced indirect steam by evaporation and concentration material, gas volume undergoes rapid expansion can have enough large corner apertures space to discharge indirect steam, it is square that first condensed water and on-condensible gas export 1-7 and the second condensed water and on-condensible gas outlet 1-8, and one of them angle is fillet, so that more steam condensate (SC) and on-condensible gas are discharged, water hammer can not be produced in discharge process.
Claims (10)
1. an efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, comprise the plate bundle (1) for heat exchange, described plate bundle (1) comprises multiple plate groups stacking arrangement, and forming steam flow channel between adjacent plate group, plate groups described in each comprises the first plate (A), the second plate (B), the 3rd plate (C) and the 4th plate (D) that are arranged in order, left and right sides on plate described in each all offers a saturated vapor inlet port, not concentrated material inlet port, a concentrate and indirect steam outlet and a condensed water and on-condensible gas outlet, the top left and right sides of described second plate (B) and the 3rd plate (C) all offers an opening passed through for the concentrate in process and indirect steam, opening on plate described in each to offer position corresponding consistent, and offer the corresponding consistent opening in position and form respectively saturated vapor passage (a), not concentrated material channel (d), concentrate and indirect steam passage (b), condensed water and on-condensible gas passage (c) and the passage passed through for the concentrate in process and indirect steam, and each passage being positioned at plate the same side defines a set of evaporative condenser system, the evaporative condenser system of described plate both sides is symmetrical about the vertical axis of plate,
Described first plate (A) is provided with first passage spacer assembly, described first passage spacer assembly makes to form steam flow channel between two adjacent plates, and make concentrate and indirect steam passage (b) and not concentrated material channel (d) independent separately, and above-mentioned each passage is all separated with steam flow channel, also make saturated vapor passage (a), steam flow channel and condensed water and on-condensible gas passage (c) be connected successively;
Described second plate (B) is provided with second channel spacer assembly, described second channel spacer assembly makes to form material between two adjacent plates and rises film runner, and make saturated vapor passage (a), concentrate and indirect steam passage (b) and condensed water and on-condensible gas passage (c) independent separately, and make above-mentioned each passage all rise film runner with material to separate, also make not concentrate material channel (d), material rises film runner and be connected successively for the passage that the concentrate in process and indirect steam pass through;
Described 3rd plate (C) is provided with third channel spacer assembly, described third channel spacer assembly makes to form steam flow channel between two plates, and make concentrate and indirect steam passage (b) and not concentrated material channel (d) independent separately, and above-mentioned each passage is all separated with steam flow channel, also make saturated vapor passage (a), steam flow channel and condensed water and on-condensible gas passage (c) be connected successively;
Described 4th plate (D) is provided with four-way spacer assembly, described four-way spacer assembly makes to form material falling liquid film runner between two plates, and make saturated vapor passage (a), condensed water and on-condensible gas passage (c) and concentrated material channel (d) separately independently, and above-mentioned each passage is all separated with material falling liquid film runner, be also used in passage, material falling liquid film runner and concentrate that concentrate in process and indirect steam pass through and indirect steam passage (b) is connected successively;
The entrance end of described saturated vapor passage (a), condensed water and on-condensible gas passage (c), concentrated material channel (d) and concentrate and indirect steam passage (b) is all connected with exterior line by flange;
Described saturated vapor passage (a) is arranged at plate bundle top, described not concentrated material channel (d) is arranged at plate bundle bottom, described concentrate and indirect steam passage (b) are arranged at plate bundle bottom, described condensed water and on-condensible gas passage (c) are arranged at plate bundle base angle place, and the described channel setting passed through for the concentrate in process and indirect steam is in the top of the second plate (B) and the 3rd plate (C).
2. according to one according to claim 1 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, the middle part that described steam flow channel, material rise film runner and material falling liquid film runner is provided with for separating of the spacer assembly with its space, both sides, left and right.
3. according to one according to claim 2 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, the both sides of the edge place of plate described in each all offers stress hole, and described stress hole is positioned on the horizontal axis of each plate.
4. according to the one efficient bidirectional flow plate type rising falling film evaporator described in claim 1 or 2 or 3, it is characterized in that, the side of plate described in each vertically offers the outlet (1-3) of the first saturated vapor import (1-1) and the first concentrate and indirect steam, the opposite side of plate described in each vertically offers the outlet (1-4) of the second saturated vapor import (1-2) and the second concentrate and indirect steam, first saturated vapor import (1-1), the outlet (1-3) of the first concentrate and indirect steam, the outlet (1-4) of the second saturated vapor import (1-2) and the second concentrate and indirect steam is all arranged at sheet edges place, the lower end edge horizontal direction of plate described in each is provided with the not concentrated material inlet (1-8) of the first not concentrated material inlet (1-7) and second, the base angle place, left and right, lower end of plate described in each offers the first condensed water and on-condensible gas outlet (1-5) and the second condensed water and on-condensible gas and exports (1-6), the top of described second plate (B) and the 3rd plate (C) is provided with the first import passed through for concentrate in process and indirect steam (1-9) and the second import passed through for concentrate in process and indirect steam (1-10) in the horizontal direction.
5. according to one according to claim 4 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, described first passage spacer assembly comprises first draw-in groove (1-14A) of first plate (A) of setting, is provided with the first sealing gasket (1-14A-1) in described first draw-in groove (1-14A), described second channel spacer assembly comprises the second draw-in groove (1-14B) be arranged on the second plate (B), the second sealing gasket (1-14B-1) is provided with in described second draw-in groove (1-14B), described third channel spacer assembly comprises the 3rd draw-in groove (1-14C) be arranged on the 3rd plate (C), the 3rd sealing gasket (1-14C-1) is provided with in described 3rd draw-in groove (1-14C), described four-way spacer assembly comprises the 4th draw-in groove (1-14D) be arranged on the 4th plate (D), the 4th sealing gasket (1-14D-1) is provided with in described 4th draw-in groove (1-14D),
Draw-in groove described in each is all arranged on the surrounding of heat exchange zone and each opening on each plate, and the concaveconvex structure that draw-in groove described in each is suppressed by its both sides surrounds.
6. according to one according to claim 5 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, described spacer assembly comprises the groove (1-13) offered along direction, plate vertical axis, described groove (1-13), for plate being divided into the first heat exchange zone (I) and the second heat exchange zone (II), is provided with the 5th sealing gasket (1-13-1) matched with it in described groove (1-13).
7. according to one according to claim 6 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, the structure of described first heat exchange zone (I) and the second heat exchange zone (II) is buckplate structure or corrugated board structures.
8. according to one according to claim 3 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, described stress hole comprises the first stress hole (1-11) and the second stress hole (1-12) that are arranged on each plate left and right sides, stress hole described in each is all arranged on sheet edges place, and stress hole described in each is uncovered shape outside plate.
9. according to one according to claim 7 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, plate described in each is rectangle, the opening shape of condensed water described in each and on-condensible gas outlet is square, and this foursquare angle is fillet, the shape of the opening described in other each is rectangle.
10. according to one according to claim 9 efficient bidirectional flow plate type rising falling film evaporator, it is characterized in that, described plate bundle (1) is arranged between fixing strong plate (2) and the strong plate of activity (3), described plate bundle (1) also comprises the end plate (8) adjacent with fixing strong plate (2), the blind plate (10) adjacent successively with the strong plate of activity (3) and card (9), the described fixing fishbolt (6) that passes through between strong plate (2) and the strong plate of activity (3) connects, the upper end of the strong plate of described activity (3) is connected with tourelle (5), plate upper end in described plate bundle (1) is hung with the top guide bar (4) of framework by suppending hole (1-15) and is connected, plate lower end in described plate bundle (1) is connected with the lower guide rod (7) of framework by locating hole (1-16).
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| CN106938178A (en) * | 2017-03-20 | 2017-07-11 | 国家海洋局天津海水淡化与综合利用研究所 | Multi-effect plate type film distilling seawater desalination system based on both vapor compression |
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| CN202942654U (en) * | 2012-07-22 | 2013-05-22 | 甘肃蓝科石化高新装备股份有限公司 | Large detachable lifting film plate-type evaporator |
| CN204219806U (en) * | 2014-10-28 | 2015-03-25 | 赵弘毅 | A kind of efficient bidirectional flow plate type rising falling film evaporator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202942654U (en) * | 2012-07-22 | 2013-05-22 | 甘肃蓝科石化高新装备股份有限公司 | Large detachable lifting film plate-type evaporator |
| CN204219806U (en) * | 2014-10-28 | 2015-03-25 | 赵弘毅 | A kind of efficient bidirectional flow plate type rising falling film evaporator |
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Effective date of registration: 20190529 Address after: 710522 Food Industrial Park No. 6, Xiehu Town (Xuehe Village), Lantian County, Xi'an City, Shaanxi Province Patentee after: Xi'an red light energy technology Engineering Co Ltd Address before: Room 801, No. 14, 2885 Lane, Jinxiu Road, Pudong New Area, Shanghai, 200127 Patentee before: Zhao Hongyi |
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