CN101632901A - Heat-recovery vacuum membrane distillation component device and vacuum membrane distillation method - Google Patents
Heat-recovery vacuum membrane distillation component device and vacuum membrane distillation method Download PDFInfo
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- CN101632901A CN101632901A CN200810053905A CN200810053905A CN101632901A CN 101632901 A CN101632901 A CN 101632901A CN 200810053905 A CN200810053905 A CN 200810053905A CN 200810053905 A CN200810053905 A CN 200810053905A CN 101632901 A CN101632901 A CN 101632901A
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Abstract
The invention discloses a heat-recovery vacuum membrane distillation component device and a vacuum membrane distillation method. The component device consists of a signal or a plurality of membrane distillation component units. Each membrane distillation component unit consists of a single or a plurality of sets of frame membrane components and a signal or a plurality of sets of frame heat exchange components, wherein the frame membrane components and the frame membrane components are arranged at intervals or mutually and serially connected. The invention heat-recovery vacuum membrane distillation component device and the vacuum membrane distillation method have the advantages of high heat recovery rate, high equipment integration, small floor occupation, low operation cost and the like.
Description
Technical field
The present invention relates to a kind of separator, specifically relate to energy-saving pressure-reduction film distillation (VMD) 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, be a kind of in desalination, concentrate, technology that fields such as crystallization, separation, water treatment have wide application prospect.
Owing to the reason MD of phase transformation is considered to the higher technology of a kind of hear rate, only under the condition that possesses used heat or cheap thermal source, has cost advantage.The present invention has developed VMD assembly apparatus and the method that can carry out efficient heat recovery simultaneously, and the heat utilization efficiency that can significantly improve at low cost in the VMD process significantly reduces operating cost.
Summary of the invention
The purpose of this invention is to provide a kind of efficient pressure reducing film distillation (VMD) assembly apparatus and method that can significantly improve heat utilization efficiency.
The present invention is realized by following technical proposals, a kind of heat reclamation type pressure reducing film distillation assembly apparatus, this assembly apparatus is by single group or organize film distillation assembly unit more and forms, and the many groups film distillation assembly unit in the assembly apparatus is with in parallel, series connection or the arrangement of series-parallel form.
As shown in Figure 1, film distillation assembly unit is made up of frame hollow fiber film assembly and frame heat-exchanging component, and film distills the interior frame hollow fiber film assembly of assembly unit and the frame heat-exchanging component is spaced, series connection mutually.Frame hollow fiber film assembly and frame heat-exchanging component can be single group series connection in film distillation assembly unit, also can be many group series connection.
The end cap that an end cap of the first order membrane module of the interior arranged in series of described film distillation assembly unit is adjacent first order heat-exchanging component homonymy is connected, the end cap of the first order heat-exchanging component other end is connected with the end cap that is adjacent second level membrane module homonymy, the end cap of the second level membrane module other end is connected with the end cap that is adjacent second level heat-exchanging component homonymy, and so the end of membrane module and heat-exchanging component is interconnected to form and is connected in series.
Described film distillation assembly unit also comprises a heat-exchanging component that is connected with spaced final stage heat-exchanging component.
Respectively there is a capping at the two ends of described film distillation assembly unit, wherein with in the capping that last heat-exchanging component links to each other a fluid inlet and outlet are arranged.
The downside of described film distillation assembly unit is provided with one or more discharging tubes.
Described film distillation assembly unit can be horizontal, vertical or inclined in use.
Described frame hollow fiber film assembly (as shown in Figure 2) comprises frame assembly cell body (shell) and evenly distributed hydrophobic porous hollow-fibre membrane in cell body, the two ends of hollow-fibre membrane are fixed respectively and are sealed in the two ends of cell body, and the two ends of assembly cell body have the end cap of fluid inlet and outlet to be connected with one respectively.
Described frame heat-exchanging component (as shown in Figure 3) comprises frame assembly cell body (shell) and evenly distributed heat exchanger tube in cell body, the two ends of heat exchanger tube are fixed respectively and are sealed in the two ends of cell body, and the two ends of assembly cell body have the end cap of liquid entrance to be connected with one respectively; Described heat exchanger tube comprises the heat exchanger tube of metal heat exchanger tube, plastic heat exchanger tube and other material and the doughnut heat exchanger tube that various material has the little external diameter of thin-walled; Described frame heat-exchanging component also comprises improved plate type heat exchanger; Described frame heat-exchanging component has the inside length and width size identical or close with the frame hollow fiber film assembly.
The inner width of described frame hollow fiber film assembly and frame heat-exchanging component is 0.02～4 meter, and length is 0.02～5 meter, and the degree of depth is 0.01～4 meter.
The structure of described film distillation assembly unit can be integral structure, the film distillation unit of forming with hydrophobic porous hollow-fibre membrane is seated in the same cell body according to series system shown in Figure 1 is parallel respectively with the heat exchange unit of forming with heat exchanger tube, the two ends of hollow-fibre membrane and heat exchanger tube are fixed respectively and are sealed in the two ends of cell body, and the two ends of each film distillation unit and heat exchange unit all have the end cap of liquid entrance to be connected with one respectively; The end cap that an end cap of first order film distillation unit is adjacent first order heat exchange unit homonymy is connected, the end cap of the first order heat exchange unit other end is connected with the end cap that is adjacent film distillation unit, second level homonymy, the end cap of the second level film distillation unit other end is connected with the end cap that is adjacent second level heat exchange unit homonymy, so the end of film distillation unit and the heat exchange unit formation cascaded structure that is interconnected; Described integral type film distillation assembly unit also comprises a heat exchange unit or a heat-exchanging component that is connected with spaced final stage heat exchange unit; Respectively there is a capping at the two ends of described integral type film distillation assembly unit, wherein with in the capping that last heat exchange unit links to each other a fluid inlet and outlet are arranged; The downside of described integral type film distillation assembly unit is provided with one or more discharging tubes.
A kind of efficient pressure reducing film distillation method that can significantly improve heat utilization efficiency is characterized in that comprising following process:
The preliminary treatment of A material liquid
Material liquid must be removed the composition that wherein solid particle, suspension, gel etc. may pollute hollow-fibre membrane through appropriate preliminary treatment.
The pressure reducing film distillation and the heat recovery of B thermal material liquid
When using film distillation assembly unit of the present invention to carry out pressure reducing film distillation, feed liquid is by the inner chamber of hollow-fibre membrane and heat exchanger tube, and negative pressure of vacuum imposes on the outside of hollow-fibre membrane and heat exchanger tube.
Flow to the other end along the hollow-fibre membrane inner chamber from the one end after entering first order membrane module or film distillation unit through preliminary treatment and the material liquid that is heated to preset temperature (40 to 100 ℃), volatilizable component evaporates on the interface of material liquid-film, and steam arrives the outside of hollow-fibre membrane by the fenestra diffusion.
Heat exchange is carried out with the low temperature feed liquid of the heat exchanger tube inner chamber of flowing through from membrane module or film distillation unit in the outside that first order membrane module or film distillation steam that the unit produced flows into adjacent with it first order heat-exchanging component or heat exchange unit heat exchanger tube under the effect of negative pressure of vacuum, feed temperature is promoted, and the part steam is condensed into liquid.
Flow into the inner chamber continuation evaporation of second level membrane module or film distillation unit hollow-fibre membrane through the feed liquid of first order heat-exchanging component or heat exchange unit heating, the steam that produces enters second level heat-exchanging component under the effect of negative pressure of vacuum or heat exchange unit carries out heat exchange from the low temperature feed liquid of second level membrane module or film distillation unit outflow together, steam is condensed, and the low temperature feed liquid is further heated.The steam that different with first order membrane module or film distillation unit and heat-exchanging component or heat exchange unit is is not condensed in first order heat-exchanging component or heat exchange unit enters second level membrane module or film distillation unit and heat-exchanging component or heat exchange unit simultaneously and is able to further condensation and discharges evaporation latent heat give feed liquid.
Based on same principle, through after the multistage evaporation and heat recovering process process, separated to a great extent the going out of volatilizable component in the feed liquid, feed liquid is concentrated into finite concentration simultaneously; If feed liquid need further be distilled, then the low temperature feed liquid that flows out in spaced final stage heat-exchanging component or the heat exchange unit further is heated to by additional heat and reenters film distillation assembly apparatus behind the preset temperature and carry out circulating and evaporating until producing a desired effect.
Extract out in spaced final stage heat-exchanging component or the heat exchange unit by the steam of total condensation can by the other heat exchanger that is attached thereto or heat exchange unit replenishes feed liquid with low temperature or other cooling mediums not carry out heat exchange, finally make whole or most of steams be condensed into liquid; Condensate liquid is discharged film distillation component system by the discharging tube that is arranged at film distillation assembly unit bottom;
According to the scale requirement, the feed liquid treating capacity and the scale of the quantity that can distill unit and heat-exchanging component or heat exchange unit by the membrane module or the film of the interior arranged in series of increase film distillation assembly unit, the quantity raising equipment of film distillation assembly unit.
Advantages such as heat reclamation type pressure reducing film distillation assembly apparatus of the present invention and method have heat recovery rate height, the integrated degree height of equipment, floor space is little, running cost is low.
Description of drawings
Fig. 1 is a film distillation assembly unit device schematic diagram: 1, assembly MM1, MM2, MM3, MMe represents the first order respectively, the second level, the third level is to the final stage hollow fiber film assembly, 2, heat-exchanging component HE1, HE2, HE3, HEe represents the first order respectively, the second level, the third level is to the final stage heat-exchanging component, heat-exchanging component HEf is the heat-exchanging component that links to each other with the final stage heat-exchanging component, 3, membrane module side seal lid, 4, heat-exchanging component side seal lid, 5, membrane module and heat-exchanging component end cap that liquid entrance is arranged, 6, liquid line, 7, the import of material liquid, 8, the outlet of material liquid, 9, cooling fluid or gas import, 10, cooling fluid or gas outlet, 11, vacuum interface, 12, the condensate discharge mouth.
Fig. 2 is the frame hollow fiber film assembly: 13, membrane module cell body, 14, hollow-fibre membrane, 15, the liquid entrance on the membrane component end cover (5).
Fig. 3 is the frame heat-exchanging component: 16, heat-exchanging component cell body, 17, heat exchanger tube, 18, the liquid entrance on the heat-exchanging component end cap (5).
The specific embodiment
When the film distillation assembly unit that uses structure as shown in Figure 1 carried out pressure reducing film distillation, feed liquid was by the inner chamber of hollow-fibre membrane and heat exchanger tube, and negative pressure of vacuum imposes on the outside of hollow-fibre membrane and heat exchanger tube.
As shown in Figure 1, enter first order membrane module (MM1) flows to hollow-fibre membrane along hollow-fibre membrane (14) inner chamber the other end through preliminary treatment and material liquid with higher temperature (40 to 100 ℃) by liquor inlet (7); Negative pressure of vacuum imposes on the outside of hollow-fibre membrane (14) and heat exchanger tube (17) by vacuum interface (11), and the volatilization component evaporates on the interface of material liquid-film, and steam arrives the outside of hollow-fibre membrane (14) by fenestra.
The steam that first order membrane module (MM1) is produced under the effect of negative pressure of vacuum flows in the adjacent with it first order heat-exchanging component (HE1), in heat-exchanging component (HE1), carry out heat exchange with the low temperature feed liquid that in membrane module (MM1), flows out, feed temperature is promoted, and the part steam is condensed into liquid.
Feed liquid through first order heat-exchanging component (HE1) heating enters second level membrane module (MM2) continuation evaporation by liquid line (6), the steam that produces enters second level heat-exchanging component (HE2) and carries out heat exchange with the low temperature feed liquid that flows out from second level membrane module (MM2) under the effect of negative pressure of vacuum, steam is condensed, and the low temperature feed liquid is further heated.Based on same principle, through after the multistage evaporation and heat recovering process process, separated to a great extent the going out of volatilizable component in the feed liquid, feed liquid is concentrated into to a certain degree simultaneously.If feed liquid need further be distilled, then the low temperature feed liquid that flows out from final stage heat-exchanging component (HEe) material liquid outlet (8) further is heated to by additional heat and reenters the film Distallation systm behind the preset temperature and carry out circulating and evaporating until producing a desired effect.
With the continuous heat exchanger (HEf) of final stage heat-exchanging component (HEe) with low temperature replenish steam that feed liquid or other cooling medium be not condensed final stage heat-exchanging component (HEe) fully or major part be condensed into liquid.
The discharging tube (12) of the bottom of condensate liquid by being arranged at membrane module or heat-exchanging component is discharged film distillation component system.
According to the scale requirement, the feed liquid treating capacity and the scale of the quantity that can distill unit and heat-exchanging component or heat exchange unit by the membrane module or the film of the interior arranged in series of increase film distillation assembly unit and the quantity raising equipment of film distillation assembly unit.
Material liquid: seawater
Preliminary treatment: precipitation, husky filter, micro-filtration
In the elementary membrane distillation assembly unit:
Membrane module and quantity: 3 of frame polypropylene hollow fiber membrane assemblies
Heat-exchanging component and quantity: 4 on frame doughnut heat exchanger
Film distillation assembly unit quantity: 1
The membrane module inlet temperature of material liquid: 90 ℃
The result: product is distilled water, 10% saliferous concentrated seawater, heat recovery and utilization rate 86%.
Material liquid: sulfur acid industrial wastewater
Preliminary treatment: precipitation, filtration
In the elementary membrane distillation assembly unit:
Membrane module and quantity: 3 of frame polytetrafluoroethylene (PTFE) hollow fiber film assemblies
Heat-exchanging component and quantity: 4 on frame plastic hollow fiber heat exchanger
Film distillation assembly unit quantity: 1
The membrane module inlet temperature of material liquid: 80 ℃
The result: product is distilled water, high concentrated sulfuric acid aqueous solution, heat recovery and utilization rate 82%.
Material liquid: sulfur acid industrial wastewater
Preliminary treatment: precipitation, filtration
Integral type film distillation assembly unit: 4
The membrane module inlet temperature of material liquid: 85 ℃
The result: product is distilled water, high concentrated sulfuric acid aqueous solution, heat recovery and utilization rate 91%.
Material liquid: the 8% ethylate aqueous solution
Preliminary treatment: filter
Integral type film distillation assembly unit: 5
The membrane module inlet temperature of material liquid: 65 ℃
The result: product is 95% ethanolic solution, heat recovery and utilization rate 68%.
Material liquid: high salinity organic synthesis waste water (NaCl 6-8% is more than the COD 20000mg/l)
Preliminary treatment: precipitation, filtration, resin adsorption
In the elementary membrane distillation assembly unit:
Membrane module and quantity: frame perfluor dimethyl dioxole-tetrafluoroethene
5 of hollow fiber film assemblies
Heat-exchanging component and quantity: 6 on improved metal plate type heat exchanger
Film distillation assembly unit quantity: 5
The membrane module inlet temperature of material liquid: 90 ℃
The result: product is distilled water, 25% concentrated salt solution, heat recovery and utilization rate 90%.
Material liquid: 5% sodium citrate aqueous solution
Preliminary treatment: ultrafiltration
In the elementary membrane distillation assembly unit:
Membrane module and quantity: 3 of frame Kynoar hollow fiber film assemblies
Heat-exchanging component and quantity: 4 on frame doughnut heat exchanger
Film distillation assembly unit quantity: 6
The membrane module inlet temperature of material liquid: 88 ℃
The result: product is distilled water, natrium citricum saturated solution and natrium citricum solid crystal, heat recovery and utilization rate 85%.
Claims (10)
1, a kind of heat reclamation type pressure reducing film distillation assembly apparatus, this assembly apparatus is organized or is organized more film distillation assembly unit and forms by list, it is characterized in that described film distillation assembly unit by single group or many groups be spaced, the frame membrane module of series connection mutually and frame heat-exchanging component form, the many groups film distillation assembly unit in the heat reclamation type pressure reducing film distillation assembly apparatus is with in parallel, series connection or the arrangement of series-parallel form.
2, according to the heat reclamation type pressure reducing film distillation assembly apparatus of claim 1, it is characterized in that: the frame membrane module in the film distillation assembly unit comprises frame assembly cell body and evenly distributed hydrophobic porous hollow-fibre membrane in cell body, the two ends of hollow-fibre membrane are fixed respectively and are sealed in the two ends of cell body, and the two ends of assembly cell body have the end cap of fluid inlet and outlet to be connected with one respectively.
3, according to the heat reclamation type pressure reducing film distillation assembly apparatus of claim 1, it is characterized in that: the frame heat-exchanging component in the film distillation assembly unit comprises frame assembly cell body and evenly distributed heat exchanger tube in cell body, the two ends of heat exchanger tube are fixed respectively and are sealed in the two ends of cell body, and the two ends of assembly cell body have the end cap of liquid entrance to be connected with one respectively; Described heat exchanger tube comprises the heat exchanger tube of metal heat exchanger tube, plastic heat exchanger tube and other material and the doughnut heat exchanger tube that various material has the little external diameter of thin-walled; Described frame heat-exchanging component also comprises improved plate type heat exchanger; Described frame heat-exchanging component has the inside length and width size identical or close with the frame membrane module.
4, according to the heat reclamation type pressure reducing film distillation assembly apparatus of claim 1, the end cap that an end cap that it is characterized in that being spaced in the described film distillation assembly unit first order membrane module of mutual series connection is adjacent first order heat-exchanging component homonymy is connected, the end cap of the first order heat-exchanging component other end is connected with the end cap that is adjacent second level membrane module homonymy, the end cap of the second level membrane module other end is connected with the end cap that is adjacent second level heat-exchanging component homonymy, and the end of spaced membrane module like this and heat-exchanging component is interconnected.
5, according to the heat reclamation type pressure reducing film distillation assembly apparatus of claim 1, it is characterized in that described film distills the interior frame membrane module of assembly unit and the inner width of frame heat-exchanging component is 0.02～4 meter, length is 0.02～5 meter, the degree of depth is 0.01～4 meter.
6,, it is characterized in that described film distillation assembly unit also comprises the heat-exchanging component that another one links to each other with spaced final stage frame heat-exchanging component according to the heat reclamation type pressure reducing film distillation assembly apparatus of claim 1.
7, according to the heat reclamation type pressure reducing film distillation assembly apparatus of claim 1, it is characterized in that respectively there is a capping at the two ends of described film distillation assembly unit, wherein with in the capping that last heat-exchanging component links to each other a fluid inlet and outlet is arranged.
8,, it is characterized in that the downside of described film distillation assembly unit is provided with one or more discharging tubes according to the heat reclamation type pressure reducing film distillation assembly apparatus of claim 1.
9, heat reclamation type pressure reducing film distillation assembly apparatus according to claim 1, the structure that it is characterized in that described film distillation assembly unit can be integral structure, with hydrophobic porous hollow-fibre membrane film distillation unit of forming and the heat exchange unit of forming with heat exchanger tube parallel respectively being seated in the same assembly cell body of arrangement mode according to frame membrane module and frame heat-exchanging component in the described film distillation of claim 1 assembly unit, the two ends of hollow-fibre membrane and heat exchanger tube are fixed respectively and are sealed in the two ends of cell body, and the two ends of each film distillation unit and heat exchange unit all have the end cap of liquid entrance to be connected with one respectively; The end cap that an end cap of first order film distillation unit is adjacent first order heat exchange unit homonymy is connected, the end cap of the first order heat exchange unit other end is connected with the end cap that is adjacent film distillation unit, second level homonymy, the end cap of the second level film distillation unit other end is connected with the end cap that is adjacent second level heat exchange unit homonymy, the end of spaced film distillation unit like this and the heat exchange unit formation cascaded structure that is interconnected; Described integral type film distillation assembly unit also comprises heat exchange unit or the heat-exchanging component that another one links to each other with spaced final stage heat exchange unit; Respectively there is a capping at the two ends of described integral type film distillation assembly unit, wherein with in the capping that last heat exchange unit or heat-exchanging component link to each other a fluid inlet and outlet are arranged; The downside of described integral type film distillation assembly unit is provided with one or more discharging tubes.
10, a kind of method of using heat reclamation type pressure reducing film distillation assembly apparatus as claimed in claim 1 is characterized in that comprising the steps:
In the pressure reducing film distillation operating process, feed liquid is by the inner chamber of hollow-fibre membrane and heat exchanger tube, and negative pressure of vacuum puts on the outside of hollow-fibre membrane and heat exchanger tube;
Flow to the other end along the hollow-fibre membrane inner chamber from the one end after entering first order membrane module or film distillation unit through preliminary treatment and the material liquid that is heated to preset temperature, volatilizable component evaporates on the interface of material liquid-film, and steam arrives the outside of hollow-fibre membrane by the fenestra diffusion;
The outside that first order membrane module or film distillation steam that the unit produced flows into adjacent with it first order heat-exchanging component or heat exchange unit heat exchanger tube under the effect of negative pressure of vacuum is carried out portion of hot with the low temperature feed liquid of the heat exchanger tube inner chamber of flowing through from membrane module or film distillation unit and is exchanged, feed temperature is promoted, and the part steam is condensed into liquid;
Flow into the inner chamber continuation evaporation of second level membrane module or film distillation unit hollow-fibre membrane through the feed liquid of first order heat-exchanging component or heat exchange unit heating, the steam that produces enters second level heat-exchanging component under the effect of negative pressure of vacuum or heat exchange unit carries out heat exchange from the low temperature feed liquid of second level membrane module or film distillation unit outflow together, steam is condensed, and the low temperature feed liquid is further heated; The steam that different with first order membrane module or film distillation unit and heat-exchanging component or heat exchange unit is is not condensed in first order heat-exchanging component or heat exchange unit enters second level membrane module or film distillation unit and heat-exchanging component or heat exchange unit simultaneously and is able to further condensation and discharges evaporation latent heat give feed liquid;
Based on same principle, through after the multistage evaporation and heat recovering process process, separated to a great extent the going out of volatilizable component in the feed liquid, feed liquid is concentrated into finite concentration simultaneously; If feed liquid need further be distilled, then the low temperature feed liquid that flows out in spaced final stage heat-exchanging component or the heat exchange unit further is heated to by additional heat and reenters film distillation assembly apparatus behind the preset temperature and carry out circulating and evaporating until producing a desired effect;
Extract out in spaced final stage heat-exchanging component or the heat exchange unit by the steam of total condensation by the other heat exchanger that is attached thereto or heat exchange unit replenishes feed liquid with low temperature or other cooling mediums do not carry out heat exchange, finally make whole or most of steams be condensed into liquid; Condensate liquid is discharged film distillation component system by the discharging tube that is arranged at film distillation assembly unit bottom;
According to the scale requirement, the quantity of the membrane module of arranged in series or film distillation unit and heat-exchanging component or heat exchange unit is to improve the feed liquid treating capacity and the scale of equipment in quantity that can be by increasing film distillation assembly unit, the film distillation assembly unit.
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| CN102861512A (en) * | 2011-07-07 | 2013-01-09 | 天津海之凰科技有限公司 | Coupling type membrane distillation assembly device and method |
| CN102949936A (en) * | 2011-08-23 | 2013-03-06 | 天津海之凰科技有限公司 | Efficient coupling membrane distillation assembly device and method thereof |
| CN104190259A (en) * | 2014-09-19 | 2014-12-10 | 天津工业大学 | Multi-effect decompression membrane distillation method and device thereof |
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| CN104884150A (en) * | 2012-11-26 | 2015-09-02 | 维多利亚大学 | Membrane distillation arrangement |
| CN106422784A (en) * | 2016-09-12 | 2017-02-22 | 天津沃驰科技有限公司 | High-efficiency membrane distillation assembly and distillation method |
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| CN102861512A (en) * | 2011-07-07 | 2013-01-09 | 天津海之凰科技有限公司 | Coupling type membrane distillation assembly device and method |
| CN102949936A (en) * | 2011-08-23 | 2013-03-06 | 天津海之凰科技有限公司 | Efficient coupling membrane distillation assembly device and method thereof |
| CN104884150A (en) * | 2012-11-26 | 2015-09-02 | 维多利亚大学 | Membrane distillation arrangement |
| CN104884150B (en) * | 2012-11-26 | 2018-01-12 | 维多利亚大学 | Membrane distillation is arranged |
| CN104289108A (en) * | 2013-07-19 | 2015-01-21 | 中国石油天然气集团公司 | High frequency pulse method for vacuum membrane distillation regeneration |
| CN104289108B (en) * | 2013-07-19 | 2016-08-10 | 中国石油天然气集团公司 | A kind of high-frequency impulse is for vacuum membrane distillation renovation process |
| CN104190259A (en) * | 2014-09-19 | 2014-12-10 | 天津工业大学 | Multi-effect decompression membrane distillation method and device thereof |
| CN107198967A (en) * | 2016-03-18 | 2017-09-26 | 中国石油化工股份有限公司 | Multiple-effect membrane regeneration plant and method for gas purification solvent reclamation |
| CN106422784A (en) * | 2016-09-12 | 2017-02-22 | 天津沃驰科技有限公司 | High-efficiency membrane distillation assembly and distillation method |
| CN108619913A (en) * | 2017-03-15 | 2018-10-09 | 中国石油化工股份有限公司 | A kind of novel air gap multiple-effect distillation device |
| CN108619913B (en) * | 2017-03-15 | 2020-09-15 | 中国石油化工股份有限公司 | Air gap membrane distillation plant |
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