CN204219811U - Falling film evaporation device - Google Patents
Falling film evaporation device Download PDFInfo
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- CN204219811U CN204219811U CN201420664086.3U CN201420664086U CN204219811U CN 204219811 U CN204219811 U CN 204219811U CN 201420664086 U CN201420664086 U CN 201420664086U CN 204219811 U CN204219811 U CN 204219811U
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Abstract
The utility model relates to feed liquid evaporation and concentration field, and object is to provide a kind of falling film evaporation device.A kind of falling film evaporation device, comprises falling film evaporator and vapour condenser; Falling film evaporator comprises the housing being provided with lower clapboard, vaporization chamber, several heat exchanger tubes, the distributor be connected with housing upper; Housing is separated into epicoele, lumen and cavity of resorption by distributor and lower clapboard; The lower end of heat exchanger tube is plugged in lower clapboard and is communicated with cavity of resorption; Distributor is provided with the number dispensing orifice identical with heat exchanger tube number; Dispensing orifice comprises two principal pieces, and diameter becomes the segmental arc being beneficial to greatly film forming gradually to two ends from middle part; The upper end of each heat exchanger tube is communicated with a principal piece; Housing is provided with the liquor inlet hole be communicated with epicoele, the heat medium import be communicated with lumen and solidifying water out, and the gas-liquid mixed be communicated with cavity of resorption exports; Vaporization chamber is provided with gas-liquid mixed inlet hole, vapor outlet port hole and liquid-phase outlet hole.This falling film evaporation device can be taken into account film-formation result and uniformity and feed liquid film-like and to flow inside heat exchanger tube decrease speed.
Description
Technical field
The utility model relates to feed liquid evaporation and concentration field, especially a kind of falling film evaporation device.
Background technology
Falling film evaporation device comprises falling film evaporator and vapour condenser, Chinese Patent Application No.: the utility model of 201410015375.5 discloses a kind of downward film evaporator, comprise shell body and be vertically arranged at the upper spacer of shell body inside, lower clapboard and heat exchanger tube, shell body lumen segmentation is become the first cavity with lower clapboard by upper spacer, second cavity and the 3rd cavity, first cavity and the second cavity are positioned at the both sides of upper spacer, second cavity and the 3rd cavity are positioned at lower clapboard both sides, heat exchanger tube one end is plugged in upper spacer and is communicated with the first cavity, the heat exchanger tube other end is plugged in lower clapboard and is communicated with the 3rd cavity, first cavity is provided with charging aperture, 3rd cavity is provided with discharge nozzle, downward film evaporator also comprises vaporization chamber, the outlet of discharge nozzle is located in vaporization chamber, vaporization chamber top is provided with jet pump, vaporization chamber bottom is provided with discharging opening.Falling film evaporator is a kind of dividing wall type heat-exchange apparatus for feed liquid evaporation and concentration; Feed liquid flows into heat exchanger tube from charging aperture through the first chamber, feed liquid film-like flows decline inside heat exchanger tube under gravity, enter the second chamber heat medium exchange heat pipe outside heat, in heat exchanger tube, the moisture of feed liquid is heat vaporized, the steam produced and liquid phase jointly enter vaporization chamber and carry out vapor-liquid separation, liquid phase is discharged by discharging opening, and steam enters vapour condenser condensation; When heat exchanger tube is thicker, the feed liquid film-like decrease speed that flows inside heat exchanger tube is very fast, but film-formation result and uniformity poor; When heat exchanger tube is thinner, better, but feed liquid film-like flows inside heat exchanger tube, decrease speed is slower for film-formation result and uniformity; There is film-formation result and uniformity and feed liquid film-like to flow inside heat exchanger tube the deficiency that decrease speed can not take into account to overcome traditional falling film evaporation device; Therefore, design a kind of film-formation result and uniformity and feed liquid film-like and to flow inside heat exchanger tube the falling film evaporation device that decrease speed can take into account, become problem demanding prompt solution.
Utility model content
The purpose of this utility model there is film-formation result and uniformity and feed liquid film-like to flow inside heat exchanger tube the deficiency that decrease speed can not take into account to overcome current falling film evaporation device, provide a kind of film-formation result and uniformity and feed liquid film-like to flow inside heat exchanger tube falling film evaporation device that decrease speed can take into account.
Concrete technical scheme of the present utility model is:
A kind of falling film evaporation device, comprises falling film evaporator and vapour condenser; Falling film evaporator comprises the housing being provided with lower clapboard, vaporization chamber, several heat exchanger tubes, the distributor be connected with housing upper; Housing is separated into epicoele, lumen and cavity of resorption by distributor and lower clapboard; The lower end of heat exchanger tube is plugged in lower clapboard and is communicated with cavity of resorption; Distributor is provided with the number dispensing orifice identical with heat exchanger tube number; Dispensing orifice comprises two diameters principal piece identical with heat exchanger tube internal diameter, the segmental arc that two ends are respectively connected with a principal piece; The diameter of segmental arc becomes large gradually to two ends from middle part; The upper end of heat exchanger tube is connected with distributor and the upper end of each heat exchanger tube is communicated with a principal piece; Housing is provided with the liquor inlet hole be communicated with epicoele, the heat medium import be communicated with lumen and solidifying water out, and the gas-liquid mixed be communicated with cavity of resorption exports; Vaporization chamber is provided with the gas-liquid mixed inlet hole with gas-liquid mixed outlet, is positioned at the vapor outlet port hole at top and is positioned at the liquid-phase outlet hole of bottom.When this falling film evaporation device uses, steam enters outside lumen exchange heat pipe from heat medium import and heats; Feed liquid enters epicoele from liquor inlet hole, distribute through dispensing orifice and enter heat exchanger tube heating and film-like flows decline inside heat exchanger tube under gravity, in heat exchanger tube, the moisture of feed liquid is heat vaporized, the steam produced and liquid phase export through gas-liquid mixed and jointly enter vaporization chamber and carry out vapor-liquid separation, liquid phase is discharged by liquid-phase outlet hole, and steam enters vapour condenser from the discharge of vapor outlet port hole and carries out condensation; The dispensing orifice of the distributor of the falling film evaporator of this falling film evaporation device has diameter and becomes the segmental arc being beneficial to greatly film forming from middle part to two ends gradually, principal piece is identical with heat exchanger tube internal diameter, can take into account film-formation result and uniformity and feed liquid film-like and to flow inside heat exchanger tube decrease speed.
As preferably, described vapour condenser comprises condensation chamber, is positioned at the cyclic water tank below condensation chamber, jet pump, centrifugal multistage pump multiple centrifugal pump; Condensation chamber comprise be provided with condensation import and shape be cydariform side enclosure wall be provided with water cavity and the water inlet plate be connected with side enclosure wall upper end; The upper surface of water inlet plate is provided with the inlet opening be communicated with water cavity; The lower surface of water inlet plate is provided with the apopore group be communicated with water cavity; Centrifugal multistage pump multiple centrifugal pump is connected with inlet opening and cyclic water tank respectively; Jet pump is connected with vapor outlet port hole and condensation import respectively.From vapor outlet port hole discharge steam under jet pump effect in condensation import approaching side leg; Under multistage centrifugal pumping action, the cooling water in cyclic water tank through inlet opening, water cavity carries out condensation to steam from apopore group approaching side leg; Vapour condenser structure is simple, good cooling results and recycle cooling water using water wisely.
As preferably, between described epicoele and vapor outlet port hole, be provided with balanced valve.The relative equilibrium of the pressure of epicoele and vaporization chamber can be regulated by balanced valve, be beneficial to feed liquid under gravity film-like to flow inside heat exchanger tube decline.
As preferably, described falling film evaporation device also comprises feed pump, stop valve, discharging pump; Feed pump is connected with liquor inlet hole by stop valve; Discharging pump is connected with liquid-phase outlet hole.Feed pump is beneficial to feed liquid and enters epicoele, and stop valve enters the flow of epicoele for controlling feed liquid; Discharging pump is beneficial to liquid phase and is discharged by liquid-phase outlet hole.
Compared with prior art, the beneficial effects of the utility model are: the dispensing orifice of the distributor of the falling film evaporator of this falling film evaporation device has diameter and becomes the segmental arc being beneficial to greatly film forming from middle part to two ends gradually, principal piece is identical with heat exchanger tube internal diameter, can take into account film-formation result and uniformity and feed liquid film-like and to flow inside heat exchanger tube decrease speed.Vapour condenser structure is simple, good cooling results and recycle cooling water using water wisely.The relative equilibrium of the pressure of epicoele and vaporization chamber can be regulated by balanced valve, be beneficial to feed liquid under gravity film-like to flow inside heat exchanger tube decline.Steam is discharged from vapor outlet port hole and enter lumen UTILIZATION OF VESIDUAL HEAT IN under compressor effect.Feed pump is beneficial to feed liquid and enters epicoele, and stop valve enters the flow of epicoele for controlling feed liquid; Discharging pump is beneficial to liquid phase and is discharged by liquid-phase outlet hole.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is the enlarged drawing of distributor in Fig. 1.
In figure: lower clapboard-1, housing-2, liquor inlet hole-21, heat medium import-22, solidifying water out-23, gas-liquid mixed outlet-24, vaporization chamber-3, gas-liquid mixed inlet hole-31, vapor outlet port hole-32, liquid-phase outlet hole-33, heat exchanger tube-4, distributor-5, dispensing orifice-51, principal piece-52, segmental arc-53, feed pump-6, stop valve-7, discharging pump-8, epicoele-9, lumen-10, cavity of resorption-11, balanced valve-12, condensation chamber-13, condensation import-131, side enclosure wall-132, water cavity-133, water inlet plate-134, inlet opening-135, apopore group-136, cyclic water tank-14, jet pump-15, centrifugal multistage pump multiple centrifugal pump-16.
Detailed description of the invention
Below in conjunction with shown in accompanying drawing, the utility model is described further.
As shown in accompanying drawing 1, accompanying drawing 2: a kind of falling film evaporation device, comprise falling film evaporator and vapour condenser; Falling film evaporator comprises the housing 2 being provided with lower clapboard 1, vaporization chamber 3, ten heat exchanger tubes 4, the distributor 5 be connected with housing 2 top, feed pump 6, stop valve 7, discharging pump 8; Ten heat exchanger tubes 4 are uniformly distributed along the circumference; Housing 2 is separated into epicoele 9, lumen 10 and cavity of resorption 11 by distributor 5 and lower clapboard 1; The lower end of heat exchanger tube 4 is plugged in lower clapboard 1 and is communicated with cavity of resorption 11; Distributor 5 is provided with number ten dispensing orifices 51 identical with heat exchanger tube 4 number; Dispensing orifice 51 comprises two diameters principal piece 52 identical with heat exchanger tube 4 internal diameter, the segmental arc 53 that two ends are respectively connected with a principal piece 52; The diameter of segmental arc 53 becomes large gradually to two ends from middle part; The upper end of heat exchanger tube 4 is welded with distributor 5 lower surface and the upper end of each heat exchanger tube 4 is communicated with a principal piece 52; Housing 2 is provided with the liquor inlet hole 21 be communicated with epicoele 9, the heat medium import 22 be communicated with lumen 10 and solidifying water out 23, and the gas-liquid mixed be communicated with cavity of resorption 11 exports 24; Vaporization chamber 3 is provided with and exports the 24 gas-liquid mixed inlet holes 31 be communicated with gas-liquid mixed, is positioned at the vapor outlet port hole 32 at top and is positioned at the liquid-phase outlet hole 33 of bottom; Vapor outlet port hole 32 is connected with vapour condenser.
In the present embodiment, described vapour condenser comprises condensation chamber 13, is positioned at the cyclic water tank 14 below condensation chamber 13, jet pump 15, centrifugal multistage pump multiple centrifugal pump 16; Condensation chamber 13 comprises and is provided with condensation import 131 and shape is the side enclosure wall 132 of cydariform and is provided with water cavity 133 and the water inlet plate 134 welded with side enclosure wall 132 upper end; The upper surface of water inlet plate 134 is provided with the inlet opening 135 be communicated with water cavity 133; The lower surface of water inlet plate 134 is provided with the apopore group 136 be communicated with water cavity 133; Centrifugal multistage pump multiple centrifugal pump 16 is connected with inlet opening 135 and cyclic water tank 14 respectively; Jet pump 15 is connected with vapor outlet port hole 32 and condensation import 131 respectively.
Feed pump 6 is connected with liquor inlet hole 21 by stop valve 7.Discharging pump 8 is connected with liquid-phase outlet hole 33; Balanced valve 12 is provided with between described epicoele 9 and vapor outlet port hole 32.
When this falling film evaporation device uses, steam enters lumen 10 from heat medium import 22 and exchanges heating outside heat pipe 4; Feed liquid enters epicoele 9 from liquor inlet hole 21, distribute through dispensing orifice 51 and enter heat exchanger tube 4 and to heat and film-like flows decline inside heat exchanger tube 4 under gravity, in heat exchanger tube 4, the moisture of feed liquid is heat vaporized, the steam produced and liquid phase export 24 through gas-liquid mixed and jointly enter vaporization chamber 3 and carry out vapor-liquid separation, liquid phase is discharged by liquid-phase outlet hole 33, and steam is discharged through condensation import 131 approaching side leg 132 from vapor outlet port hole 32 under jet pump 15 acts on; Under centrifugal multistage pump multiple centrifugal pump 16 acts on, the cooling water in cyclic water tank 14 through inlet opening 135, water cavity 133 carries out condensation to steam from apopore group 136 approaching side leg 132.
The beneficial effect of this utility model is: the dispensing orifice of the distributor of the falling film evaporator of this falling film evaporation device has diameter and becomes the segmental arc being beneficial to greatly film forming from middle part to two ends gradually, principal piece is identical with heat exchanger tube internal diameter, can take into account film-formation result and uniformity and feed liquid film-like and to flow inside heat exchanger tube decrease speed.Vapour condenser structure is simple, good cooling results and recycle cooling water using water wisely.The relative equilibrium of the pressure of epicoele and vaporization chamber can be regulated by balanced valve, be beneficial to feed liquid under gravity film-like to flow inside heat exchanger tube decline.Steam is discharged from vapor outlet port hole and enter lumen UTILIZATION OF VESIDUAL HEAT IN under compressor effect.Feed pump is beneficial to feed liquid and enters epicoele, and stop valve enters the flow of epicoele for controlling feed liquid; Discharging pump is beneficial to liquid phase and is discharged by liquid-phase outlet hole.
It is apparent to one skilled in the art that the utility model can change into various ways, such change do not think depart from scope of the present utility model.All like this to the apparent amendment of the technical staff in described field, by be included in this claim scope within.
Claims (4)
1. a falling film evaporation device, comprises falling film evaporator and vapour condenser; It is characterized in that: described falling film evaporator comprises the housing being provided with lower clapboard, vaporization chamber, several heat exchanger tubes, the distributor be connected with housing upper; Housing is separated into epicoele, lumen and cavity of resorption by distributor and lower clapboard; The lower end of heat exchanger tube is plugged in lower clapboard and is communicated with cavity of resorption; Distributor is provided with the number dispensing orifice identical with heat exchanger tube number; Dispensing orifice comprises two diameters principal piece identical with heat exchanger tube internal diameter, the segmental arc that two ends are respectively connected with a principal piece; The diameter of segmental arc becomes large gradually to two ends from middle part; The upper end of heat exchanger tube is connected with distributor and the upper end of each heat exchanger tube is communicated with a principal piece; Housing is provided with the liquor inlet hole be communicated with epicoele, the heat medium import be communicated with lumen and solidifying water out, and the gas-liquid mixed be communicated with cavity of resorption exports; Vaporization chamber is provided with the gas-liquid mixed inlet hole with gas-liquid mixed outlet, is positioned at the vapor outlet port hole at top and is positioned at the liquid-phase outlet hole of bottom.
2. falling film evaporation device according to claim 1, is characterized in that: described vapour condenser comprises condensation chamber, is positioned at the cyclic water tank below condensation chamber, jet pump, centrifugal multistage pump multiple centrifugal pump; Condensation chamber comprise be provided with condensation import and shape be cydariform side enclosure wall be provided with water cavity and the water inlet plate be connected with side enclosure wall upper end; The upper surface of water inlet plate is provided with the inlet opening be communicated with water cavity; The lower surface of water inlet plate is provided with the apopore group be communicated with water cavity; Centrifugal multistage pump multiple centrifugal pump is connected with inlet opening and cyclic water tank respectively; Jet pump is connected with vapor outlet port hole and condensation import respectively.
3. falling film evaporation device according to claim 1, is characterized in that: be provided with balanced valve between described epicoele and vapor outlet port hole.
4. the falling film evaporation device according to claim 1 or 2 or 3, is characterized in that: also comprise feed pump, stop valve, discharging pump; Feed pump is connected with liquor inlet hole by stop valve; Discharging pump is connected with liquid-phase outlet hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664086.3U CN204219811U (en) | 2014-11-07 | 2014-11-07 | Falling film evaporation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420664086.3U CN204219811U (en) | 2014-11-07 | 2014-11-07 | Falling film evaporation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204219811U true CN204219811U (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420664086.3U Active CN204219811U (en) | 2014-11-07 | 2014-11-07 | Falling film evaporation device |
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| Country | Link |
|---|---|
| CN (1) | CN204219811U (en) |
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2014
- 2014-11-07 CN CN201420664086.3U patent/CN204219811U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Address after: 312369 Hangzhou Bay Shangyu economic and Technological Development Zone, Shaoxing, Zhejiang, Shangyu Patentee after: Chemical Limited by Share Ltd Address before: 312369 Hangzhou Bay Fine Chemical Industry Park, Shaoxing, Zhejiang Province, No. eleven, No. 2, Shangyu Patentee before: BSM Chemical Co., Ltd. |