CN102949936A - Efficient coupling membrane distillation assembly device and method thereof - Google Patents
Efficient coupling membrane distillation assembly device and method thereof Download PDFInfo
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- CN102949936A CN102949936A CN2011102422964A CN201110242296A CN102949936A CN 102949936 A CN102949936 A CN 102949936A CN 2011102422964 A CN2011102422964 A CN 2011102422964A CN 201110242296 A CN201110242296 A CN 201110242296A CN 102949936 A CN102949936 A CN 102949936A
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Abstract
The invention relates to an efficient coupling membrane distillation assembly device and a method thereof. The core part of the membrane distillation assembly device is composed above-two parallel-placed assembly unit groups, each of the assembly unit groups is composed of above-two parallel-placed assembly units, and each of the assembly units is formed by a membrane evaporation unit composed of above-two parallel-placed hydrophobic hollow fiber micro-porous membranes, and a heat recovery unit composed of two parallel-placed flat type heat exchange layers. The assembly device has the advantages of high evaporation efficiency, high heat recovery rate, energy saving, high equipment integration degree, low operation cost and the like.
Description
Technical field
The present invention relates to a kind of separator, be specifically related to film distillation assembly apparatus and method.
Background technology
Film distillation (Membrane Distillation is hereinafter to be referred as MD) technology has had the advantage of the way of distillation and embrane method concurrently, is a kind of technology that has wide application prospect in fields such as desalination, concentrated, crystallization, separation, water treatments.
Owing to the reason MD of phase transformation is considered to the higher technology of a kind of hear rate, under the condition that possesses used heat or cheap thermal source, has cost advantage.For improving MD efficiency of utilization and production efficiency, the present invention has developed a kind of film distillation assembly apparatus and method that has efficient heat recovery function concurrently, can significantly reduce hear rate and operating cost in the MD water treatment procedure.
Summary of the invention
The purpose of this invention is to provide a kind of film distillation assembly apparatus and method that can significantly improve efficiency of utilization and membrane efficiency.
Technical scheme of the present invention comprises film evaporation and two parts of heat recovery.
As shown in Figure 1, the core of film distillation assembly apparatus is comprised of the assembly unit group of discharging side by side more than and, it is characterized in that the assembly unit group by more than one and one side by side the assembly unit of discharging form, the film evaporation element that assembly unit is comprised of the hydrophobic hollow fiber microporous film layers that is arranged in parallel more than and consists of jointly with the heat recovery units that the flat heat exchange layer by two parallel dischargings forms.
Described hydrophobic hollow fiber microporous film layers is arranged in parallel by a plurality of hydrophobic hollow fiber microporous barriers and forms.
In the described assembly unit between the flat heat exchange layer lining with between mesh-supported layer, the hollow fiber microporous membrane layer, also can serve as a contrast with the mesh-supported layer between flat heat exchange layer and the hollow fiber microporous membrane layer; Described mesh-supported layer contains flow channel for liquids, and has good temperature tolerance and decay resistance.
At the two ends of assembly unit, between the hollow fiber microporous membrane and and flat heat exchange layer between seal; The both sides of adjacent flat heat exchange layer seal in the assembly unit, form airtight fluid passage.
Described film distillation assembly apparatus, its architectural feature can be expressed as: the feed liquid general import is established in the homonymy port of the film evaporation element that discharges side by side in all component unit in first order assembly unit group, wherein the material liquid outlet of the film evaporation element other end of each assembly unit is connected with the heat recovery units of its homonymy, and total material liquid outlet of heat recovery units is connected with the liquor inlet of the film evaporation element of its homonymy second level assembly unit group, and the material liquid outlet of the film evaporation element of assembly unit is connected with the heat recovery units of its homonymy under this assembly unit group; By that analogy, the material liquid outlet of next-higher assembly unit group heat recovery units is connected with the liquor inlet of its next stage assembly unit group inner membrance evaporation element, and the material liquid outlet of the film evaporation element of each group inner assembly unit, level assembly unit all is connected with the heat recovery units of its homonymy; One-level assembly unit group to the last, the material liquid outlet of its heat recovery units is as the final material liquid outlet of assembly apparatus.
Described assembly apparatus also comprises the condensate discharge mouth that is arranged on the assembly cell body and is positioned at the heat recovery units downside; Different condensate discharge mouths is connected with a condensate discharge pipeline.
Described assembly apparatus not only can the Design and manufacture rectangularity, square kit form, and can the circular assembly of Design and manufacture and the kit form of other shape.
A kind of membrane distillation method that utilizes the said modules device is characterized in that comprising following process:
Be heated to by heater through pretreated feed liquid that the liquor inlet by assembly apparatus is input in the assembly apparatus after 50-100 ℃, feed liquid is evaporated in the process that flows through hydrophobic hollow fiber microporous barrier surface and is produced steam, steam arrives adjacent flat heat exchange layer by fenestra, the feed liquid of the lower temperature that flows in this and heat recovery units is carried out heat exchange, feed liquid is heated to higher temperature, steam is condensed into liquid simultaneously, and condensate liquid is discharged from the condensate discharge mouth of downside.
Feed liquid in the process on hydrophobic hollow fiber microporous barrier surface of flowing through because the evaporation of liquid, its temperature is on a declining curve, simultaneously also on a declining curve along the temperature of feed liquid flow direction steam, all reached minimum at material liquid outlet place feed temperature and the steam temperature of film evaporation element; The low temperature feed liquid enters adjacent heat recovery units from the material liquid outlet of film evaporation element, form adverse current with the feed liquid in the film evaporation element, feed liquid is constantly heated by the steam that disengages in hollow fiber microporous membrane and is promoted to higher temperature in heat recovery units, the feed liquid with higher temperature that flows out in the heat recovery units enters next stage assembly unit group, the process of carrying out same evaporation, condensation, heating again.
The feed liquid with higher concentration of discharging in the afterbody assembly unit group, can again be heated as required rear circulation enter assembly apparatus further evaporate, concentrated.
Condensate liquid and a small amount of low-temperature steam of discharging from assembly apparatus downside condensate discharge mouth can carry out heat exchange to reclaim more heat and to obtain more condensate liquid by heat-exchanger rig and additional feed liquid, cooling fluid.
In the assembly apparatus running, vacuum plant can be connected with the heat-exchanger rig at assembly apparatus condensate discharge mouth place, makes to produce certain negative pressure in the assembly apparatus to improve the film distillation efficiency.
According to the scale requirement, quantity that can be by increasing assembly apparatus inner assembly unit group and assembly unit and the area of assembly unit Intimal area and heat recovery units improve the feed liquid treating capacity of unit assembly apparatus, realize that by many grip assemblies of parallel connection device fairly large feed liquid processes.
Hence one can see that is carrying out the process of film distillation and heat recovery simultaneously in assembly apparatus of the present invention, the advantage such as have that evaporation efficiency and heat recovery rate are high, energy-conservation, integration of equipments degree height, running cost are low.
Description of drawings
Fig. 1 is the assembly apparatus structural representation: 1, assembly unit (group), 2, package shell, 3, assembly end envelope, 4, the mesh-supported layer, 5, hollow fiber microporous membrane, 6, flat heat exchange layer, 7, the condensate discharge mouth, 8, liquor inlet, 9, material liquid outlet, 10, the condensate discharge pipeline.
The specific embodiment
As shown in Figure 1, be input in the first order assembly unit group (1) of assembly apparatus system by liquor inlet (8) through preliminary treatment and the material liquid that is heated to preset temperature, feed liquid evaporation in the process that flows through hydrophobic hollow fiber microporous barrier (5) surface produces steam, steam arrives adjacent flat heat exchange layer (6) by fenestra, the feed liquid heat exchange of the lower temperature that in this and heat recovery units, flows, feed liquid is heated to higher temperature, steam is condensed into liquid simultaneously, and condensate liquid is discharged from the condensate discharge mouth (7) of downside.
Owing to the evaporation of liquid, its temperature is on a declining curve in the process on hydrophobic hollow fiber microporous barrier (5) surface of flowing through for feed liquid, and is simultaneously also on a declining curve along the temperature of feed liquid flow direction steam; The low temperature feed liquid enters adjacent heat recovery units from the film evaporation element, form adverse current with the feed liquid in the film evaporation element, feed liquid is constantly heated by the steam that disengages in hydrophobic hollow fiber microporous barrier (5) and is promoted to higher temperature in heat recovery units, the feed liquid with higher temperature that flows out in the heat recovery units enters in the next stage assembly unit group (1) process of carrying out same evaporation, condensation, heating again.
The concentrated feed liquid that flows out in the afterbody assembly unit group (1) is discharged the assembly apparatus system from material liquid outlet (9), as required also can with concentrate feed liquid again heat rear circulation enter assembly apparatus further evaporate, concentrated.
Condensate liquid and a small amount of low-temperature steam of discharging from assembly apparatus downside condensate discharge mouth (7) can carry out heat exchange to reclaim more heat and to obtain more condensate liquid by heat-exchanger rig and additional feed liquid, cooling fluid.
In the assembly apparatus running, vacuum plant can be connected with the heat-exchanger rig at assembly apparatus condensate discharge mouth place, makes to produce certain negative pressure in the assembly apparatus to improve the film distillation efficiency.
According to the scale requirement, quantity that can be by increasing assembly apparatus inner assembly unit group and assembly unit (1) and the area of assembly unit inner membrance (5) area peace plate-type heat-exchange layer (6) improve the feed liquid treating capacity of unit assembly apparatus, realize that by many grip assemblies of parallel connection device fairly large feed liquid processes.
Embodiment 1
Material liquid: seawater; Preliminary treatment: precipitation, husky filter, micro-filtration
Assembly unit group quantity: 8
Material liquid inlet temperature: 92 ℃
The result: product is distilled water, 16% saliferous concentrated seawater, recuperation of heat utilization rate 94%.
Embodiment 2
Material liquid: sulfur acid industrial wastewater; Preliminary treatment: precipitation, filtration
Assembly unit group quantity: 5
Material liquid inlet temperature: 85 ℃
The result: product is distilled water, 32% concentrated sulfuric acid aqueous solution, recuperation of heat utilization rate 88%.
Embodiment 3
Material liquid: the industrial wastewater of contains sodium sulfate; Preliminary treatment: precipitation, filtration
Assembly unit total quantity: 6
Material liquid inlet temperature: 85 ℃
The result: product is distilled water, 20% aqueous sodium persulfate solution, recuperation of heat utilization rate 94%.
Material liquid: organic synthesis waste water (containing inorganic salts, acylate and other a small amount of organic compound of part); Preliminary treatment: precipitation, filtration, resin adsorption
Assembly unit group quantity: 3
Material liquid inlet temperature: 95 ℃
The result: product is distilled water (COD＜30mg/L), solid salt, concentrate, recuperation of heat utilization rate 94%.
Claims (8)
1. a film distills assembly apparatus, formed by the assembly unit group of discharging side by side more than and, it is characterized in that the assembly unit group by more than one and one side by side the assembly unit of discharging form, the film evaporation element that assembly unit is comprised of the hydrophobic hollow fiber microporous film layers that is arranged in parallel more than and consists of jointly with the heat recovery units that the flat heat exchange layer by two parallel dischargings forms.
2. according to the film of claim 1 distillation assembly apparatus, it is characterized in that described hydrophobic hollow fiber microporous film layers is arranged in parallel by a plurality of hydrophobic hollow fiber microporous barriers to form.
3. the film according to claim 1 distills assembly apparatus, it is characterized in that in the described assembly unit between the flat heat exchange layer lining with the mesh-supported layer, between the hollow fiber microporous membrane layer, also can serve as a contrast with the mesh-supported layer between flat heat exchange layer and the hollow fiber microporous membrane layer; Described mesh-supported layer contains flow channel for liquids, and has good temperature tolerance and decay resistance.
4. according to the film of claim 1 distillation assembly apparatus, it is characterized in that between the hollow fiber microporous membrane at described assembly unit two ends and and flat heat exchange layer between seal; The both sides of adjacent flat heat exchange layer seal in the assembly unit, form airtight fluid passage.
5. the film according to claim 1 distills assembly apparatus, it is characterized in that: the homonymy port of the film evaporation element that discharges side by side in all component unit in assembly apparatus first order assembly unit group is provided with the feed liquid general import, wherein the material liquid outlet of the film evaporation element other end of each assembly unit is connected with the heat recovery units of its homonymy, and total material liquid outlet of heat recovery units is connected with the liquor inlet of the film evaporation element of its homonymy second level assembly unit group, and the material liquid outlet of the film evaporation element of assembly unit is connected with the heat recovery units of its homonymy under this assembly unit group; By that analogy, the material liquid outlet of next-higher assembly unit group heat recovery units is connected with the liquor inlet of its next stage assembly unit group inner membrance evaporation element, and the material liquid outlet of the film evaporation element of each group inner assembly unit, level assembly unit all is connected with the heat recovery units of its homonymy; One-level assembly unit group to the last, the material liquid outlet of its heat recovery units is as the final material liquid outlet of assembly apparatus.
6. according to the film of claim 1 distillation assembly apparatus, it is characterized in that described film distillation assembly apparatus also comprises to be arranged on the assembly cell body and to be positioned at the condensate discharge mouth of heat recovery units downside and the condensate discharge pipeline that is connected with the condensate discharge mouth.
7. according to the film of claim 1 distillation assembly apparatus, it is characterized in that described film distillation assembly apparatus not only can the Design and manufacture rectangularity, square kit form, and can the circular assembly of Design and manufacture and the kit form of other shape.
8. one kind is utilized the as claimed in claim 1 method of film distillation assembly apparatus, it is characterized in that comprising following process:
Be heated to by heater through pretreated feed liquid that the liquor inlet by assembly apparatus is input in the assembly apparatus after 50-100 ℃, feed liquid is evaporated in the process that flows through hydrophobic hollow fiber microporous barrier surface and is produced steam, steam arrives adjacent flat heat exchange layer by fenestra, the feed liquid of the lower temperature that flows in this and heat recovery units is carried out heat exchange, feed liquid is heated to higher temperature, steam is condensed into liquid simultaneously, and condensate liquid is discharged from the condensate discharge mouth of downside;
Feed liquid in the process on hydrophobic hollow fiber microporous barrier surface of flowing through because the evaporation of liquid, its temperature is on a declining curve, simultaneously also on a declining curve along the temperature of feed liquid flow direction steam, all reached minimum at material liquid outlet place feed temperature and the steam temperature of film evaporation element; The low temperature feed liquid enters adjacent heat recovery units from the material liquid outlet of film evaporation element, form adverse current with the feed liquid in the film evaporation element, feed liquid is constantly heated by the steam that disengages in hollow fiber microporous membrane and is promoted to higher temperature in heat recovery units, the feed liquid with higher temperature that flows out in the heat recovery units enters next stage assembly unit group, the process of carrying out same evaporation, condensation, heating again;
The feed liquid with higher concentration of discharging in the afterbody assembly unit group, can again be heated as required rear circulation enter assembly apparatus further evaporate, concentrated;
Condensate liquid and a small amount of low-temperature steam of discharging from assembly apparatus downside condensate discharge mouth can carry out heat exchange to reclaim more heat and to obtain more condensate liquid by heat-exchanger rig and additional feed liquid, cooling fluid;
In the assembly apparatus running, vacuum plant can be connected with the heat-exchanger rig at assembly apparatus condensate discharge mouth place, makes to produce certain negative pressure in the assembly apparatus to improve the film distillation efficiency;
According to the scale requirement, quantity that can be by increasing assembly apparatus inner assembly unit group and assembly unit and the area of assembly unit Intimal area and heat recovery units improve the feed liquid treating capacity of unit assembly apparatus, realize that by many grip assemblies of parallel connection device fairly large feed liquid processes.
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| CN2011102422964A CN102949936A (en) | 2011-08-23 | 2011-08-23 | Efficient coupling membrane distillation assembly device and method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334456A (en) * | 2016-10-21 | 2017-01-18 | 中国科学院大连化学物理研究所 | Hollow fiber separating membrane module |
| CN106345303A (en) * | 2016-11-08 | 2017-01-25 | 卢征春 | Energy-saving low-temperature micro-negative pressure decompressing membrane evaporation and concentration system |
| CN106693425A (en) * | 2016-12-13 | 2017-05-24 | 安徽科茂能源科技有限公司 | High-efficiency energy-saving plate type heat exchange distillation device |
| CN108067103A (en) * | 2017-12-29 | 2018-05-25 | 北京中科瑞升资源环境技术有限公司 | Doughnut tablet coupled film distillation equipment and use its membrane distillation system |
| CN109876478A (en) * | 2019-03-21 | 2019-06-14 | 上海景峰制药有限公司 | Solvent evaporation device in a kind of barrel type water |
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| CN101147845A (en) * | 2006-09-20 | 2008-03-26 | 天津海之凰科技有限公司 | Hollow fiber pressure reducing film distillation film component device and method |
| CN101600492A (en) * | 2006-10-31 | 2009-12-09 | 荷兰应用自然科学研究组织 | The membrane distillation method that is used for decontaminating liquid |
| CN101632901A (en) * | 2008-07-21 | 2010-01-27 | 天津海之凰科技有限公司 | Heat-recovery vacuum membrane distillation component device and vacuum membrane distillation method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101147845A (en) * | 2006-09-20 | 2008-03-26 | 天津海之凰科技有限公司 | Hollow fiber pressure reducing film distillation film component device and method |
| CN101600492A (en) * | 2006-10-31 | 2009-12-09 | 荷兰应用自然科学研究组织 | The membrane distillation method that is used for decontaminating liquid |
| CN101632901A (en) * | 2008-07-21 | 2010-01-27 | 天津海之凰科技有限公司 | Heat-recovery vacuum membrane distillation component device and vacuum membrane distillation method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334456A (en) * | 2016-10-21 | 2017-01-18 | 中国科学院大连化学物理研究所 | Hollow fiber separating membrane module |
| CN106345303A (en) * | 2016-11-08 | 2017-01-25 | 卢征春 | Energy-saving low-temperature micro-negative pressure decompressing membrane evaporation and concentration system |
| CN106693425A (en) * | 2016-12-13 | 2017-05-24 | 安徽科茂能源科技有限公司 | High-efficiency energy-saving plate type heat exchange distillation device |
| CN106693425B (en) * | 2016-12-13 | 2023-04-07 | 浙江科茂能源科技有限公司 | Efficient energy-saving plate type heat exchange distillation device |
| CN108067103A (en) * | 2017-12-29 | 2018-05-25 | 北京中科瑞升资源环境技术有限公司 | Doughnut tablet coupled film distillation equipment and use its membrane distillation system |
| CN109876478A (en) * | 2019-03-21 | 2019-06-14 | 上海景峰制药有限公司 | Solvent evaporation device in a kind of barrel type water |
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Application publication date: 20130306 |