CN103762005A - Membrane distillation device for decrement of concentrated solution in nuclear industry - Google Patents
Membrane distillation device for decrement of concentrated solution in nuclear industry Download PDFInfo
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- CN103762005A CN103762005A CN201410030606.XA CN201410030606A CN103762005A CN 103762005 A CN103762005 A CN 103762005A CN 201410030606 A CN201410030606 A CN 201410030606A CN 103762005 A CN103762005 A CN 103762005A
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- distillation device
- hydrophobic membrane
- chamber
- fresh water
- pipe fitting
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Abstract
The invention discloses a membrane distillation device for decrement of a concentrated solution in the nuclear industry. The membrane distillation device for decrement of the concentrated solution in the nuclear industry comprises a radiation-resistant and compression-resistant container, wherein a liquid inlet chamber and a liquid outlet chamber are arranged at the two ends of the radiation-resistant and compression-resistant container respectively, and a fresh water chamber is arranged between the liquid inlet chamber and the liquid outlet chamber; hydrophobic membrane element pipe fittings are arranged in the fresh water chamber, and the two ends of each hydrophobic membrane element pipe fitting are connected with the liquid inlet chamber and the liquid outlet chamber respectively, so that a concentrated solution circulating channel is formed; the latent heat of the concentrated solution is evaporated through the hydrophobic membrane element pipe fittings to generate steam, and then the steam enters the fresh water chamber. According to the membrane distillation device for decrement of the concentrated solution in the nuclear industry, the mode that the feed liquid flows through the interiors of the hydrophobic membrane element pipe fittings and the steam flows through the exteriors of the hydrophobic membrane element pipe fittings is adopted, inspection and maintenance of the hydrophobic membrane element pipe fittings can be conducted conveniently, exchanging efficiency can be greatly improved, the latent heat reaction is promoted, and the membrane flux is improved; a condensation system and a vacuum system or a scavenging system are arranged on the membrane distillation device, condensation and vacuum treatment or scavenging can be directly conducted on the steam after the steam passes through a hydrophobic membrane, mass transfer is promoted, and membrane distillation efficiency is promoted.
Description
Technical field
The present invention relates to core technical field of three-waste treatment, particularly a kind of distillation device for nuclear industry concentrate decrement.
Background technology
Nuclear industry " concentrate " refers to the steaming raffinate of nuclear power station radioactive liquid waste evaporation and concentration, and its salt content is about 200g/kg.The radioactivity concentrate that nuclear power station is produced, adopt kept in or cement solidification method more at present.But cement solidification increase-volume is higher, both taken temporary library storage position, increase again final disposal expense.Therefore nuclear industry concentrate is carried out to decrement, both met nuclear industry refuse small quantization principle, can reduce final disposal expense again, become and must not allow slow thing.
In traditional distillation device, a large amount of concentrates of nuclear industry are placed in to the intermediate cavity 1 of radiation proof compression resistanted container, in intermediate cavity 1, be provided with film unit pipe fitting 2, and adopt hollow tube outside mistake feed liquid, die to cross the pattern of steam, carry out nuclear industry concentrate decrement.This distillation device in actual motion, be not easy to judge film unit part whether damaged or no generation by hydrophobicity, transfer hydrophilic performance to and destroy.In addition, traditional distillation device mates with condenser system, vacuum system or scavenge system after steam need to being derived again, and affecting 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 distillation device for nuclear industry concentrate decrement.
To achieve these goals, a kind of distillation device for nuclear industry concentrate decrement of the present invention, this 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.
Further, 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.
Further, described support heat-conducting piece is heat conductive silica gel net, and coefficient of heat conductivity is 2.0W/ (mK)～2.2W/ (mK).Further, described hydrophobic membrane pipe fitting adopts PTFE material, and water vapor flux is 10～15L/ (m
2h), 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 at least one in condenser system, vacuum system and scavenge system.
Further, described hydrophobic membrane unit pipes is uniformly distributed in described fresh water chamber.
The present invention adopts and in the pipe of hydrophobic membrane unit pipe fitting, crosses the pattern that feed liquid, pipe outside are crossed 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.
Accompanying drawing explanation
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, 3 is fluid chamber, and 4 is feed liquor chamber, and 5 is hydrophobic membrane unit pipe fitting, 6 is fresh water chamber, 7 is liquid outlet, and 8 is inlet, and 9 is the outlet of fresh water chamber 6,10 for supporting air-guide part, 11 is hydrophobic membrane pipe fitting, and 12 for supporting heat-conducting piece, and 13 is radiation proof compression resistanted container.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 2, specific embodiment for a kind of distillation device for nuclear industry concentrate decrement of the present invention, this distillation device comprises radiation proof compression resistanted container 13, radiation proof compression resistanted container 13 comprises feed liquor chamber 4, fluid chamber 3 and fresh water chamber 6, wherein feed liquor chamber 4 and fluid chamber 3 lay respectively at the two ends of radiation proof compression resistanted container 13, and the middle part of radiation proof compression resistanted container 13, be between feed liquor chamber 4 and fluid chamber 3, to be fresh water chamber 6, on the chamber wall of feed liquor chamber 4, be provided with inlet 8, fluid chamber 3 to chamber wall on 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, the two ends of every bundle hydrophobic membrane unit pipe fitting 5 are connected with fluid chamber 3 respectively at feed liquor chamber 4, form concentrate circulation passage.The tube wall of every bundle hydrophobic membrane unit 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, coefficient of heat conductivity is 2.0W/ (mK)～2.2W/ (mK); Hydrophobic membrane pipe fitting 11 adopts PTFE material, external diameter 2.5mm, and thick 0.4mm, anchor ring aperture is 0.1-0.2 μ m, water vapor flux is 10～15L/ (m
2h), tolerance pH 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 heat conduction and the air guide of hydrophobic membrane unit pipe fitting 5; 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 serviceable 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 formed the concentrate circulation passage of nuclear industry.When the concentrate of nuclear industry is heated to after 55 ℃, from inlet 8, enter, by above-mentioned concentrate circulation passage, in the time of in the pipe of concentrate arrival hydrophobic membrane unit pipe fitting 5, concentrate produces latent heat gasification reaction, and the steam of generation is derived by hydrophobic membrane pipe fitting 11, enter into fresh water chamber 5, finally from the outlet 9 of fresh water chamber 5, derive, circulation said process, thus the concentrate that nuclear industry is produced carries out decrement.
At steam, import to fresh water chamber 9 when interior, be arranged on the condenser system on distillation device, steam can be cooled to water; Or be arranged on vacuum system or the scavenge system on distillation device, and steam can be carried out to vacuum or scavenging, be expelled to fast outside fresh water chamber 9, thereby promote mass transfer, improve film distillation efficiency.
Steam can directly be subject to condensation, vacuum or scavenging effect after crossing film, promotes mass transfer, and then promotes film distillation efficiency.
Distillation device in embodiment adopts and in the pipe of hydrophobic membrane unit pipe fitting 5, crosses the pattern that feed liquid, pipe outside are crossed steam, not only easily carry out inspection, the maintenance of hydrophobic membrane unit pipe fitting 5, and because the circulation of concentrate and the timely processing of deriving steam can improve exchange efficiency greatly, promote the generation of latent heat reaction.
Through comparing, use the hydrophobic membrane pipe fitting 11 of identical PTFE material, adopt the mode in traditional approach and the present invention to carry out the processing of concentrate of the same race, under the identical prerequisite of the operation controlled conditions 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, and the various embodiments that meet inventive concept that those skilled in the art make are all within protection scope of the present invention.
Claims (7)
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.
2. distillation device as claimed in claim 1, is characterized in that, 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.
3. distillation device as claimed in claim 2, is characterized in that, described support heat-conducting piece is heat conductive silica gel net, and coefficient of heat conductivity is 2.0W/ (mK) ~ 2.2W/ (mK).
4. distillation device as claimed in claim 2, is characterized in that, described hydrophobic membrane pipe fitting adopts PTFE material, and water vapor flux is 10 L/ (m
2h) ~ 15L/ (m
2h), tolerance pH value scope is 1 ~ 14.
5. distillation device as claimed in claim 2, is characterized in that, described support air-guide part is stainless (steel) wire.
6. 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.
7. 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 |
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| 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 |
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| CN103762005A true CN103762005A (en) | 2014-04-30 |
| CN103762005B CN103762005B (en) | 2016-05-11 |
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Cited By (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 |
| CN115041022A (en) * | 2022-06-29 | 2022-09-13 | 武汉大学 | System and method for monitoring membrane infiltration process in membrane distillation on line |
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| US6110373A (en) * | 1998-03-25 | 2000-08-29 | Patterson; James A. | Method for separating heavy isotopes of hydrogen from water |
| CN1558941A (en) * | 2001-08-27 | 2004-12-29 | 多孔媒介公司 | Oil dehydrator |
| CN101862599A (en) * | 2010-06-25 | 2010-10-20 | 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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2014
- 2014-01-22 CN CN201410030606.XA patent/CN103762005B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6110373A (en) * | 1998-03-25 | 2000-08-29 | Patterson; James A. | Method for separating heavy isotopes of hydrogen from water |
| CN1558941A (en) * | 2001-08-27 | 2004-12-29 | 多孔媒介公司 | Oil dehydrator |
| CN101862599A (en) * | 2010-06-25 | 2010-10-20 | 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 |
Cited By (5)
| 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 |
| CN115041022A (en) * | 2022-06-29 | 2022-09-13 | 武汉大学 | System and method for monitoring membrane infiltration process in membrane distillation on line |
| CN115041022B (en) * | 2022-06-29 | 2023-07-28 | 武汉大学 | System and method for online monitoring membrane infiltration process in membrane distillation |
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| Publication number | Publication date |
|---|---|
| CN103762005B (en) | 2016-05-11 |
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