CN203582534U - Mechanical compression type evaporation device - Google Patents
Mechanical compression type evaporation device Download PDFInfo
- Publication number
- CN203582534U CN203582534U CN201320773720.2U CN201320773720U CN203582534U CN 203582534 U CN203582534 U CN 203582534U CN 201320773720 U CN201320773720 U CN 201320773720U CN 203582534 U CN203582534 U CN 203582534U
- Authority
- CN
- China
- Prior art keywords
- interchanger
- evaporation cavity
- evaporation
- evaporation chamber
- heat exchanger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000008020 evaporation Effects 0.000 title claims abstract description 46
- 238000001704 evaporation Methods 0.000 title claims abstract description 46
- 230000006835 compression Effects 0.000 title claims abstract description 11
- 238000007906 compression Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000011552 falling film Substances 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims abstract description 7
- 239000003595 mist Substances 0.000 claims description 12
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 239000012267 brine Substances 0.000 description 9
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 9
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 239000012266 salt solution Substances 0.000 description 4
- 239000012153 distilled water Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to a wastewater treatment device in the technical field of environmental protection, particularly to a mechanical compression type evaporation device. The mechanical compression type evaporation device comprises a falling-film evaporator, wherein the falling-film evaporator comprises an upper heat exchanger and an evaporation chamber connected to the site below the heat exchanger; a feed pipe is arranged on the side wall of the evaporation chamber, and the bottom of the evaporation chamber is connected with a discharge pipe; the discharge pipe passes through a circulating pump and then enters the top of the heat exchanger from the lower part of the evaporation chamber, a seed crystal solution is added from the inlet of the circulating pump, the other effluent from the outlet of the circulating pump is separated in a cyclone separator, and the bottom liquid flows back to the inlet of the circulating pump. A distributor, a water distribution plate and a plurality of vertically arranged heat exchange tubes are arranged at the upper part of the inner cavity of the heat exchanger from top to bottom in sequence, and the steam in the evaporation chamber passes through a demister to remove the entrained liquid droplets, is extracted out from the upper part of the evaporation chamber by an external centrifugal compressor, and then returns to the heat exchanger. Compared with the prior art, the mechanical compression type evaporation device provided by the utility model can recover and recycle heat, reduce the use amount of recirculation pipes, reduce heat loss of the evaporator, and remove droplets entrained in the steam to ensure the normal operation of the compressor.
Description
Technical field
The utility model relates to the wastewater treatment equipment of environmental technology field, especially for the mechanical compression type evaporation unit of industrial brine waste.
Background technology
Evaporation unit of the prior art, vaporizer circulating line all adopts external reflux, has increased use and the thermosteresis of external pipe.Meanwhile, the falling film evaporator water distribution of prior art adopts top spray more, is easy to produce on water distribution inequality, tube wall form situations such as " doing " under operational conditions, causes the problems such as heat transfer efficiency is low, pipeline cleaning is more frequent.In addition, vaporizer steam directly enters compressor without mist eliminator, can make the droplet deposition of entrainment with steam on impeller, and the residual salt branch of drop causes vibration of compressor, causes compressor shutdown; And select high rotating speed compressor, to having relatively high expectations of steam, adapt to occasion less.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of mechanical compression type evaporation unit.It can carry out recycle and reuse by heat energy, reduces recirculation conduit consumption, reduces the thermal losses of vaporizer, and the drop of simultaneously removing entrainment with steam guarantees the normal operation of compressor.
In order to reach foregoing invention object, the utility model adopts following technical scheme:
Mechanical compression type evaporation unit, its constructional feature is, and it comprises falling film evaporator, and falling film evaporator comprises the interchanger on top and is connected to the evaporation cavity of interchanger below.Evaporation cavity sidewall is provided with feed-pipe, and evaporation cavity bottom connects discharge nozzle.Discharge nozzle enters the top of interchanger after recycle pump again from evaporation cavity bottom, the ingress of recycle pump adds crystal seed liquid, and another road of circulation pump outlet end liquid after cyclone separator separates is back to again pump entry.Heat exchanger cavity top is provided with divider, water distributing tray and vertically arranged many heat transfer tubes from top to bottom successively, and interchanger is extracted and returned to the steam in evaporation cavity by outside centrifugal compressor out from the top of evaporation cavity after mist eliminator is removed entrained drip.
The utility model, owing to having adopted said structure, does not need plus high-pressure thermal source, by centrifugal compressor recycle secondary steam, has reduced energy consumption.Meanwhile, the home loop of strong brine refluxes, and has reduced the use of thermosteresis and external pipe, has reduced cost.The appropriate design of mist eliminator and crystal seed circulation in the utility model, the work-ing life of having improved equipment.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Referring to Fig. 1, the utility model mechanical compression type evaporation unit comprises falling film evaporator, and falling film evaporator comprises the interchanger 6 on top and is connected to the evaporation cavity 2 of interchanger 6 belows.Evaporation cavity 2 sidewalls are provided with feed-pipe 1, and evaporation cavity 2 bottoms connect discharge nozzle 3, and discharge nozzle 3 enters the top of interchanger 6 after recycle pump 4 from evaporation cavity 2 bottoms.The ingress of recycle pump 4 also adds crystal seed liquid, and another road of the outlet of recycle pump 4 end liquid after cyclone separator 19 separates is back to again recycle pump 4 entrances.Interchanger 6 inner chamber tops are provided with divider 7, water distributing tray 8 and vertically arranged many heat transfer tubes 9 from top to bottom successively, and interchanger 6 is extracted and returned to the steam in evaporation cavity 2 by outside centrifugal compressor 13 out from the top of evaporation cavity 2 after mist eliminator 11 is removed entrained drip.
During the work of the utility model device, strong brine flows in falling film evaporator evaporation cavity 2 from feed-pipe 1, recycle pump 4 extracts strong brine from evaporation cavity 2 bottoms and is back to the divider 7 at falling film evaporator interchanger 6 tops, then fall into water distributing tray 8, strong brine is evenly distributed in each heat transfer tube 9, and strong brine flows into evaporation cavity 2 along heat transfer tube 9 tube walls.For making mist eliminator 11 silk screen layers keep moistening, regularly by pipeline, to it, spray distilled water.Steam is extracted out by centrifugal compressor 13 through mist eliminator 11, and the steam after compression enters in interchanger 6 by pipeline, transfers heat to the thin liquid film of heat transfer tube 9 inner sides.Water of condensation after heat exchange collects and self-condensation water pipe 15 flows out, and unnecessary steam is discharged by the steam-pipe 16 on interchanger 6 tops.Crystal seed liquid mixes with the strong brine in discharge nozzle 3, through recycle pump 4, extract rear portion out and return to interchanger 6 through evaporation cavity 2, another part enters cyclone separator 19 and separates, and the end liquid after separation is back to the entrance of recycle pump 4 through return line 20, and the supernatant liquor after separation enters subsequent disposal system.
In the utility model, falling-film evaporator carries out preheating by pump circulation, has reduced the use of thermosteresis and external pipe.Strong brine, from refluxing (external pipe is only for the connection of recycle pump 4) by home loop in evaporation cavity 2, has formed the preheating pipe at the center of restraining.Salt solution is transported to film supplying tube top through recycle pump 4, be radial flow and cross top divider 7, then fall into bottom water distributing tray 8, dense water is evenly distributed to each heat transfer tube 9 tops, can guarantee that under various operational conditionss pipe side is moistening, form moisture film and keep high heat transfer efficiency.The utility model water distribution system is transported to every heat transfer tube 9 inner sides by strong brine, transfers heat to the thin liquid film of tube side by the steam of heat transfer tube 9 shell side condensations, dense water is reached or approach boiling point, along the interior side inflow evaporation cavity of heat transfer tube 9.Can make saline solution be uniformly distributed in heat-exchanging tube bundle, can blockage phenomenon, clean and safeguard very convenient.
In the utility model, the heat that on interchanger 6 shell sides, vapor condensation discharges makes the salt solution gasification of part circulation, and the steam of generation and saline solution flow into evaporation cavity 2 in the same way, this two phase flow is conducive to keep the liquid film of heat transfer tube 9 internal surfaces, accelerating liquid flows, and turbulization is strengthened heat exchange.Steam enters into separate compressors 13 through mist eliminator 11, and mist eliminator 11 is removed the drop of carrying secretly, thereby preventing that salt solution drop is deposited on causes corrosion or shut down on impeller.Meanwhile, removal entrained drip is also most important for generating high-quality distilled water.For making mist eliminator 11 silk screen layers keep moistening, silk screen layer is spray distilled water regularly.In the utility model, falling-film evaporator is coaxially arranged, and mist eliminator 11 and interchanger 6 are the integrated design, and has reduced the occupation of land of evaporation cavity 2, reduces system installation costs.
In the utility model, centrifugal compressor 13 adopts slow speed of revolution centrifugal turbine blower fan, and with self-stip waterworks, its efficiency is high, low to steam requirement, adaptation occasion is many.Centrifugal compressor 13 is to compressing intensification by the steam of mist eliminator 11, and when the steam after intensification enters falling-film evaporator interchanger 6 shell side, in pipeline external surface condensation, water of condensation collects below condenser, as quality products water, discharges recycling.The compressed vapour amount of returning to evaporation cavity 2 exceeds the required amount of evaporation working order, and redundance is discharged recycling from interchanger 6.
The utility model, circulates to control calcium carbonate etc. at container and heat transfer tube 9 surface scales by crystal seed.The calcium sulfate of the tiny dispersion of sufficient amount keeps suspending in salt solution, and the calcium sulfate surface more much larger than evaporation equipment total surface area is provided, and makes allied substances at calcium sulfate suspended substance surface precipitation, therefore can fouling in other mechanical means.
Claims (1)
1. mechanical compression type evaporation unit, it is characterized in that, it comprises falling film evaporator, described falling film evaporator comprises the interchanger (6) on top and is connected to the evaporation cavity (2) of interchanger (6) below, evaporation cavity (2) sidewall is provided with feed-pipe (1), evaporation cavity (2) bottom connects discharge nozzle (3), discharge nozzle (3) enters the top of interchanger (6) after recycle pump (4) again from evaporation cavity (2) bottom, the ingress of recycle pump (4) adds crystal seed liquid, another road of outlet of recycle pump (4) end liquid after cyclone separator (19) separates is back to again recycle pump (4) entrance, interchanger (6) inner chamber top is provided with divider (7), water distributing tray (8) and vertically arranged many heat transfer tubes (9) from top to bottom successively, and interchanger (6) is extracted and returned to the steam in evaporation cavity (2) by outside centrifugal compressor (13) out from the top of evaporation cavity (2) after mist eliminator (11) is removed entrained drip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773720.2U CN203582534U (en) | 2013-12-02 | 2013-12-02 | Mechanical compression type evaporation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320773720.2U CN203582534U (en) | 2013-12-02 | 2013-12-02 | Mechanical compression type evaporation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203582534U true CN203582534U (en) | 2014-05-07 |
Family
ID=50580484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320773720.2U Expired - Lifetime CN203582534U (en) | 2013-12-02 | 2013-12-02 | Mechanical compression type evaporation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203582534U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671308A (en) * | 2013-12-02 | 2015-06-03 | 同方环境股份有限公司 | Mechanical compression evaporating device |
| CN105327518A (en) * | 2014-08-12 | 2016-02-17 | 上海凯赛生物技术研发中心有限公司 | Pentanediamine concentration system and method thereof |
-
2013
- 2013-12-02 CN CN201320773720.2U patent/CN203582534U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671308A (en) * | 2013-12-02 | 2015-06-03 | 同方环境股份有限公司 | Mechanical compression evaporating device |
| CN105327518A (en) * | 2014-08-12 | 2016-02-17 | 上海凯赛生物技术研发中心有限公司 | Pentanediamine concentration system and method thereof |
| CN105327518B (en) * | 2014-08-12 | 2018-01-23 | 上海凯赛生物技术研发中心有限公司 | The concentration systems and method of a kind of pentanediamine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |