CN103762005B - A kind of distillation device for nuclear industry concentrate decrement - Google Patents
A kind of distillation device for nuclear industry concentrate decrement Download PDFInfo
- Publication number
- CN103762005B CN103762005B CN201410030606.XA CN201410030606A CN103762005B CN 103762005 B CN103762005 B CN 103762005B CN 201410030606 A CN201410030606 A CN 201410030606A CN 103762005 B CN103762005 B CN 103762005B
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- Prior art keywords
- hydrophobic membrane
- chamber
- pipe fitting
- distillation device
- membrane unit
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- 238000004821 distillation Methods 0.000 title claims abstract description 31
- 239000012141 concentrate Substances 0.000 title claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 41
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 39
- 239000013505 freshwater Substances 0.000 claims abstract description 23
- 239000012530 fluid Substances 0.000 claims abstract description 18
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000004907 flux Effects 0.000 claims abstract description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000012546 transfer Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000002000 scavenging effect Effects 0.000 abstract description 4
- 238000009833 condensation Methods 0.000 abstract description 3
- 230000005494 condensation Effects 0.000 abstract description 3
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of distillation device for nuclear industry concentrate decrement, this device comprises radiation proof compression resistanted container, and radiation proof compression resistanted container two ends are respectively equipped with feed liquor chamber and fluid chamber, between feed liquor chamber and fluid chamber, is provided with fresh water chamber; In fresh water chamber, be provided with hydrophobic membrane unit pipe fitting, pipe fitting two ends, hydrophobic membrane unit are connected with fluid chamber with feed liquor chamber respectively, form concentrate circulation passage; Concentrate is by hydrophobic membrane unit pipe fitting, and latent heat is vaporized with steam and enters fresh water chamber. This device adopts the pattern of crossing feed liquid, pipe outside in the pipe of hydrophobic membrane unit pipe fitting and cross steam, not only easily carries out inspection, the maintenance of hydrophobic membrane unit pipe fitting, and can greatly improve exchange efficiency, promotes the generation of latent heat reaction, improves membrane flux; And condenser system, vacuum system or scavenge system are set on distillation device of the present invention, and steam is crossed the effect that can directly be subject to condensation, vacuum or scavenging after hydrophobic membrane, promotes mass transfer, and then promote film distillation efficiency.
Description
Technical field
The present invention relates to core technical field of three-waste treatment, particularly a kind of for nuclear industry concentrate decrementDistillation device.
Background technology
Nuclear industry " concentrate " refers to the steaming raffinate of nuclear power station radioactive liquid waste evaporation and concentration, and its salt content approximatelyFor 200g/kg. The radioactivity concentrate that nuclear power station is produced, adopt kept in or cement solidification method more at present. ButCement solidification increase-volume is higher, has both taken temporary library storage position, increases again final disposal expense. Therefore nuclear industry is denseContracting liquid carries out decrement, has both met nuclear industry refuse small quantization principle, can reduce again final disposal expense, becomesFor must not allowing slow thing.
In traditional distillation device, a large amount of nuclear industry concentrates are placed in to the intermediate cavity of radiation proof compression resistanted containerIn 1, in intermediate cavity 1, be provided with film unit pipe fitting 2, and feed liquid, die are crossed steaming excessively to adopt hollow tube outsideThe pattern of gas, carries out nuclear industry concentrate decrement. This distillation device, in actual motion, is not easy to sentenceThe whether damaged or no generation of disconnected film unit part transfers hydrophilic performance to by hydrophobicity and destroys. In addition tradition,Distillation device mate with condenser system, vacuum system or scavenge system again after need to will steam deriving, shadowRinging steam derives transformation efficiency, affects mass transfer, and then affects film distillation efficiency.
Summary of the invention
The problems referred to above that exist for prior art, the invention provides a kind of for nuclear industry concentrate decrementDistillation device.
To achieve these goals, a kind of distillation device for nuclear industry concentrate decrement of the present invention, shouldDevice comprises radiation proof compression resistanted container, and radiation proof compression resistanted container two ends are respectively equipped with feed liquor chamber and fluid chamber,Between feed liquor chamber and fluid chamber, be provided with fresh water chamber, on feed liquor chamber, be provided with inlet, fluid chamberOn be provided with liquid outlet, fresh water chamber is provided with outlet; In fresh water chamber, be provided with some hydrophobic membrane unit pipesPart, pipe fitting two ends, hydrophobic membrane unit are connected with fluid chamber with feed liquor chamber respectively, form concentrate circulation logicalRoad; Concentrate is by hydrophobic membrane unit pipe fitting, and latent heat is vaporized with steam and enters fresh water chamber.
Further, the tube wall of described hydrophobic membrane unit pipe fitting comprises support heat-conducting piece, hydrophobic from inside to outside successivelyFilm pipe fitting, support air-guide part.
Further, described support heat-conducting piece is heat conductive silica gel net, and thermal conductivity factor is2.0W/ (mK)～2.2W/ (mK). Further, described hydrophobic membrane pipe fitting adopts PTFE material, and steam is logicalAmount is 10～15L/ (m2H), tolerance pH value scope is 1～14.
Further, described support air-guide part is stainless (steel) wire.
Further, on described distillation device, be provided with in condenser system, vacuum system and scavenge system extremelyFew a kind of.
Further, described hydrophobic membrane unit pipes is uniformly distributed in described fresh water chamber.
The present invention adopts the pattern of crossing feed liquid, pipe outside in the pipe of hydrophobic membrane unit pipe fitting and cross steam, not only holdsEasily carry out inspection, the maintenance of hydrophobic membrane unit pipe fitting, and can greatly improve exchange efficiency, promote latent heatThe generation of reaction, improves membrane flux; And condenser system, vacuum system are set on distillation device of the present inventionOr scavenge system, steam is crossed the effect that can directly be subject to condensation, vacuum or scavenging after hydrophobic membrane, promotes mass transfer,And then promotion film distillation efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of existing traditional distillation device;
Fig. 2 is the structural representation of the distillation device for nuclear industry concentrate decrement of the present invention;
Fig. 3 is the partial enlarged drawing of the hydrophobic membrane unit pipe fitting in distillation device of the present invention;
Wherein, 1 is the intermediate cavity of radiation proof compression resistanted container, and 2 is film unit pipe fitting, and 3 is fluid chamber, 4For feed liquor chamber, 5 is hydrophobic membrane unit pipe fitting, and 6 is fresh water chamber, and 7 is liquid outlet, and 8 is inlet, 9For the outlet of fresh water chamber 6,10 for supporting air-guide part, and 11 is hydrophobic membrane pipe fitting, and 12 for supporting heat-conducting piece,13 is radiation proof compression resistanted container.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 2, concrete for a kind of distillation device for nuclear industry concentrate decrement of the present inventionEmbodiment, this distillation device comprises radiation proof compression resistanted container 13, radiation proof compression resistanted container 13 comprises admission chamberChamber 4, fluid chamber 3 and fresh water chamber 6, wherein feed liquor chamber 4 and fluid chamber 3 lay respectively at radiation proofThe two ends of compression resistanted container 13, and the middle part of radiation proof compression resistanted container 13, i.e. feed liquor chamber 4 and fluid chamber 3Between be fresh water chamber 6, on the chamber wall of feed liquor chamber 4, be provided with inlet 8, fluid chamber 3 arrivesOn chamber wall, be provided with liquid outlet 7, on the chamber wall of fresh water chamber 6, be provided with outlet 9.
In fresh water chamber 6, be evenly distributed with hydrophobic membrane unit pipe fitting 5, two of every bundle hydrophobic membrane unit pipe fitting 5End is connected with fluid chamber 3 respectively at feed liquor chamber 4, forms concentrate circulation passage. Every bundle hydrophobic membrane listThe tube wall of unit's pipe fitting 5 is followed successively by from inside to outside and supports heat-conducting piece 12, hydrophobic membrane pipe fitting 11, supports air-guide part 10.Wherein, supporting heat-conducting piece 12 is heat conductive silica gel net, external diameter 1.6mm, and thick 0.4mm, anchor ring aperture is 1mm,Thermal conductivity factor is 2.0W/ (mK)～2.2W/ (mK); Hydrophobic membrane pipe fitting 11 adopts PTFE material, external diameter2.5mm, thick 0.4mm, anchor ring aperture is 0.1-0.2 μ m, water vapor flux is 10～15L/ (m2H), tolerancePH value scope is 1～14; Supporting air-guide part 10 is stainless (steel) wire, external diameter 3mm, and anchor ring aperture is 2mm.The setting of medial support heat-conducting piece 12 and outside-supporting air-guide part 10, can promote hydrophobic membrane unit pipe fitting 5Heat conduction and air guide, and make the hydrophobic membrane pipe fitting 11 that core PTFE makes obtain the protection in structural strength,And can effectively prevent fouling, extend the service life of hydrophobic membrane pipe fitting 11.
In the pipe of the inlet 8 of the distillation device of the present embodiment, feed liquor chamber 4, hydrophobic membrane unit pipe fitting 5,Fluid chamber 3 and liquid outlet 7 have formed the concentrate circulation passage of nuclear industry. When the concentrate of nuclear industry addsHeat, after 55 DEG C, enters from inlet 8, by above-mentioned concentrate circulation passage, when concentrate arrives hydrophobicIn the pipe of film unit pipe fitting 5 time, concentrate produces latent heat gasification reaction, and the steam of generation is by hydrophobic membrane pipePart 11 is derived, and enters into fresh water chamber 5, finally derives from the outlet 9 of fresh water chamber 5, circulates above-mentionedProcess, thus the concentrate that nuclear industry is produced carries out decrement.
Import to fresh water chamber 9 when interior at steam, be arranged on the condenser system on distillation device, can be by steamingGas is cooled to water; Or be arranged on vacuum system or the scavenge system on distillation device, steam can be carried out verySky or scavenging, be expelled to outside fresh water chamber 9 fast, thereby promote mass transfer, improves film distillation efficiency.
Steam can directly be subject to condensation, vacuum or scavenging effect after crossing film, promotes mass transfer, and then promotes film distillationEfficiency.
Distillation device in embodiment adopts in the pipe of hydrophobic membrane unit pipe fitting 5 and crosses feed liquid, pipe outside is crossed and steamedThe pattern of gas, not only easily carries out inspection, the maintenance of hydrophobic membrane unit pipe fitting 5, and due to concentrateThe timely processing of circulation and derivation steam can improve exchange efficiency greatly, promotes the generation of latent heat reaction.
Through relatively, use the hydrophobic membrane pipe fitting 11 of identical PTFE material, adopt in traditional approach and the present inventionMode carry out the processing of concentrate of the same race, under the identical prerequisite of the operation controlled condition such as flow, temperature,After stable operation, the latter's membrane flux improves 30～50% than the former.
Above-mentioned example is just for illustrating the present invention, and embodiments of the present invention are not limited to these examples, thisWhat those skilled in the art made meets the various detailed description of the invention of inventive concept all in protection of the present inventionWithin scope.
Claims (6)
1. the distillation device for nuclear industry concentrate decrement, it is characterized in that, described distillation device comprises radiation proof compression resistanted container, radiation proof compression resistanted container two ends are respectively equipped with feed liquor chamber and fluid chamber, between feed liquor chamber and fluid chamber, be provided with fresh water chamber, on feed liquor chamber, be provided with inlet, on fluid chamber, be provided with liquid outlet, fresh water chamber is provided with outlet; In fresh water chamber, be provided with some hydrophobic membrane unit pipe fittings, pipe fitting two ends, hydrophobic membrane unit are connected with fluid chamber with feed liquor chamber respectively, form concentrate circulation passage; Concentrate is by hydrophobic membrane unit pipe fitting, and latent heat is vaporized with steam and enters fresh water chamber; The tube wall of described hydrophobic membrane unit pipe fitting comprises successively from inside to outside support heat-conducting piece, hydrophobic membrane pipe fitting, supports air-guide part.
2. distillation device as claimed in claim 1, is characterized in that, described support heat-conducting piece is heat conductive silica gel net, and thermal conductivity factor is 2.0W/ (mK) ~ 2.2W/ (mK).
3. distillation device as claimed in claim 1, is characterized in that, described hydrophobic membrane pipe fitting adopts PTFE material, and water vapor flux is 10L/ (m2h)~15L/(m2H), tolerance pH value scope is 1 ~ 14.
4. distillation device as claimed in claim 1, is characterized in that, described support air-guide part is stainless (steel) wire.
5. distillation device as claimed in claim 1, is characterized in that, is provided with at least one in condenser system, vacuum system and scavenge system on described distillation device.
6. distillation device as claimed in claim 1, is characterized in that, described hydrophobic membrane unit pipes is uniformly distributed in described fresh water chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030606.XA CN103762005B (en) | 2014-01-22 | 2014-01-22 | A kind of distillation device for nuclear industry concentrate decrement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410030606.XA CN103762005B (en) | 2014-01-22 | 2014-01-22 | A kind of distillation device for nuclear industry concentrate decrement |
Publications (2)
| Publication Number | Publication Date |
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| CN103762005A CN103762005A (en) | 2014-04-30 |
| CN103762005B true CN103762005B (en) | 2016-05-11 |
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| CN201410030606.XA Active CN103762005B (en) | 2014-01-22 | 2014-01-22 | A kind of distillation device for nuclear industry concentrate decrement |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147932A (en) * | 2014-08-18 | 2014-11-19 | 湖州森诺膜技术工程有限公司 | Normal-pressure pollution and plugging resistant energy-saving membrane distiller |
| CN106365228A (en) * | 2015-07-24 | 2017-02-01 | 北京中环膜材料科技有限公司 | Double-latent membrane distillation assembly |
| CN108597636A (en) * | 2018-03-19 | 2018-09-28 | 南华大学 | A kind of method and system of film distillation technology processing radioactive wastewater |
| CN115041022B (en) * | 2022-06-29 | 2023-07-28 | 武汉大学 | System and method for online monitoring membrane infiltration process in membrane distillation |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6110373A (en) * | 1998-03-25 | 2000-08-29 | Patterson; James A. | Method for separating heavy isotopes of hydrogen from water |
| EP1442100A4 (en) * | 2001-08-27 | 2005-07-27 | Porous Media Corp | Oil dehydrator |
| CN101862599B (en) * | 2010-06-25 | 2013-07-03 | 清华大学 | Method for washing hydrophobic membrane for treating industrial wastewater |
| CN202191847U (en) * | 2011-07-11 | 2012-04-18 | 东莞市威迪膜科技有限公司 | Long-flow tubular microfiltration membrane assembly |
| CN203183922U (en) * | 2013-04-18 | 2013-09-11 | 江苏夏航环境工程有限公司 | Membrane component and high-efficiency energy-saving sea water desalination device with same |
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| CN103762005A (en) | 2014-04-30 |
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