CN106345303A - Energy-saving low-temperature micro-negative pressure decompressing membrane evaporation and concentration system - Google Patents
Energy-saving low-temperature micro-negative pressure decompressing membrane evaporation and concentration system Download PDFInfo
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- CN106345303A CN106345303A CN201610980397.4A CN201610980397A CN106345303A CN 106345303 A CN106345303 A CN 106345303A CN 201610980397 A CN201610980397 A CN 201610980397A CN 106345303 A CN106345303 A CN 106345303A
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/364—Membrane distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/366—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/368—Accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/08—Flat membrane modules
- B01D63/082—Flat membrane modules comprising a stack of flat membranes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/447—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by membrane distillation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/063—Underpressure, vacuum
Abstract
The invention discloses an energy-saving low-temperature micro-negative pressure decompressing membrane evaporation and concentration system which comprises a feed liquid circulating unit, an evaporation membrane set, a condensation unit, a condensate circulating tank and a heat energy recycling-feeding unit, wherein the feed liquid circulating unit comprises a feed liquid circulating tank; the evaporation membrane set is used for evaporating volatile components in the feed liquid inputted from the feed liquid circulating tank into steam and conveying to the condensation unit and then returning the concentrated feed liquid to the feed liquid circulating tank; the condensation unit comprises a condensation device and a distillate tank; the condensation device is used for condensing steam inputted to the condensation unit into distillate and conveying to the distillate tank; the distillate tank is used for accommodating the distillate; the condensate circulating tank is used for supplying relatively cold condensate to the condensation unit and collecting the relatively hot distillate outputted by the condensation unit; the heat energy recycling-feeding unit is used for recycling heat energy from a functional unit of the concentration system and supplying heat energy to the functional unit of the concentration system. The system provided by the invention has the advantages of simple structure, capability of effectively realizing energy and resource reutilization, simplicity in operation, stability in performance, long service life and energy-saving and environment-friendly property.
Description
Technical field
The present invention relates to a kind of feed liquid evaporative distillation recovery system and in particular to a kind of energy-saving low-temperature decompression film evaporative distillation
Concentration systems, belong to feed liquid concentration and recovery and process, wastewater treatment and waste water are directly changed high-quality drinking water, and seawater desalination is light
Change, medication chemistry, technical field is changed in raw materials recovery utilization etc..
Background technology
Evaporation and concentration is chemical pharmaceutical, food, substantially single in electroplating wastewater zero surface treated product production process
Atom operation equipment.To thermal sensitivity feed liquid, for preventing the loss of nutritional labeling or active component etc., also in need recycling purifies
The feed liquid purifying, generally requires evaporation and concentration at low temperature.Traditional low-temperature evaporation method for concentration typically adopts and is evaporated in vacuo, that is,
The principle being reduced using feed liquid boiling point under vacuum, makes feed liquid seethe with excitement under suitable vacuum, at a temperature of less than 100 DEG C,
The concentration of feed liquid is improved, and then obtains the concentration feed liquid meeting technological requirement.But vacuum evaporation method need to be equipped with evacuation and set
Standby, evaporation concentration system itself also will have preferable pressure-bearing property and sealing, therefore, the design of system, manufacture, installation and operation
Require all higher, the energy consumption of evacuation is also very big, the initial cost of system and operating cost are also higher.
In addition, in various industrial processes, often producing the higher waste water of a certain amount of pollution concentration, waste liquid,
Common handling process, currently mainly adopts two ways to remove: a kind of is will to give up by the method for physical chemistry, biological treatment
Pollutant removal in water, waste liquid.This respect is mainly conceived to and for the pollutant in high-concentration waste to carry out degraded point
Change post processing, so that waste water can reach discharge standard.Using this processing mode, not only because each in high-concentration waste
Plant pollutant amount higher, and make processing cost high, and treatment effect is also unstable；Meanwhile, there are pollutant
Or some have the material of high value, and they can not be recycled by this method, and simply removes, just
Waste material valuable in a large number in vain.Another: it is heating evaporation mode, that is, adopt the technology similar to multiple-effect evaporation
With mvr evaporation technique, but multiple-effect evaporation and mvr evaporation technique are, in the state of low pressure, waste water is heated to 70 DEG C～90
DEG C, pure water is distilled, this process often system complex, the short difficulty of maintenance cycle is big, evacuation energy consumption
Larger, heating simultaneously leads to Pollutants in Wastewater property to change, and loses recovery value.
For above-mentioned technological deficiency, also have developed a series of waste liquid evaporating and concentrating process on the market at present, but, but
Such technique has that equipment is complicated mostly again, and service life is short, inefficiency, cycle are long, valuable constituent recovery utilization rate
The defects such as difference.
Therefore, the pure water extracting in high-concentration waste of how low energy consumption, and realize high value pollutant
Retain and recycle, this has become as the long-term problem demanding prompt solution of industry.
Content of the invention
Present invention is primarily targeted at providing a kind of energy-saving low-temperature tiny structure decompression film evaporation concentration system, thus overcoming
The deficiencies in the prior art.
For realizing aforementioned invention purpose, the technical solution used in the present invention includes:
Embodiments provide a kind of energy-saving low-temperature tiny structure decompression film evaporative distillation system, comprising:
Feed liquid cycling element, comprising: feed liquid circulating slot, at least in order to house feed liquid；
Evaporating film group, at least in order to evaporate the part or all of volatile component from the feed liquid that feed liquid circulating slot inputs
Form steam and be delivered to condensing unit, and the feed liquid of concentration is returned and transports in feed liquid circulating slot；
Condensing unit, comprising:
Condensing units, at least in order to form distillate and to transport to distillation liquid bath the steam condensation of input condensing unit,
Distillation liquid bath, at least in order to accommodating described distillate,
Condensate circulation groove, at least in order to the condensed fluid relatively cold to the supply of described condensing units and the described condensation of collection
The relatively hot condensed fluid of device output；
And, heat energy supply-recovery unit, at least in order to from described energy-saving low-temperature tiny structure decompression film evaporation concentration system
The functional unit comprising heat energy more than needed in reclaim heat energy, and reduce pressure film evaporation concentration system to described energy-saving low-temperature tiny structure
Require supplementation with heat energy be provided in the functional unit of heat energy.
In some embodiments, described evaporating film group includes housing and plural groups evaporation diaphragm, this plural groups evaporating film
Piece is respectively arranged on a plurality of within the chambers in described housing, adjacent chamber isolation sealed against one another, and each chamber is included by described steaming
Send out feed liquid vaporization chamber and the vaporization vacuum chamber that diaphragm separates；The feed liquid port of described feed liquid vaporization chamber and material liquid outlet are all and feed liquid
Circulating slot connects, and the steam (vapor) outlet of described vaporization vacuum chamber is connected with the steam inlet of condensing units.
In some embodiments, it is provided with vacuum dividing plate between adjacent chamber.
In some embodiments, this plural groups evaporation diaphragm is arranged parallel, and the liquor inlet of all feed liquid vaporization chambers
It is arranged in parallel, material liquid outlet is also arranged in parallel, the steam (vapor) outlet of all vaporization vacuum chambers is also arranged in parallel simultaneously.
In some embodiments, described evaporation diaphragm is included nanometer evaporating film and is fixedly connected with described nanometer evaporating film
Evaporating film strengthen fixing net, machine is fixed through the first evaporating film fixed mechanism and the second evaporating film respectively in described evaporation diaphragm two ends
Structure is fixedly connected with described housing, be distributed with described first evaporating film fixed mechanism described feed liquid vaporization chamber feed liquid port and
The steam (vapor) outlet of described vaporization vacuum chamber, the feed liquid that described second evaporating film fixed mechanism is distributed described feed liquid vaporization chamber goes out
Mouthful.
In some embodiments, described first evaporating film fixed mechanism or the second evaporating film fixed mechanism both sides set respectively
There are the first seal combination bayonet socket and the second seal combination bayonet socket, one of them first evaporating film fixed mechanism or the second evaporating film are solid
The the first seal combination bayonet socket determining mechanism can be fixed with another adjacent the first evaporating film fixed mechanism or the second evaporating film
Second seal combination bayonet socket sealing of mechanism combines.
In some embodiments, described energy-saving low-temperature tiny structure decompression film evaporation concentration system also include heat pump machine and
The feed liquid bucket being connected with heat pump machine, described feed liquid bucket is connected with feed liquid circulating slot, and described heat pump machine and condensed fluid follow
Annular groove connects, and at least in order to recovery heat energy from the condensed fluid in described condensate circulation groove and into feed liquid bucket
Feed liquid provides heat energy.
In some embodiments, described energy-saving low-temperature tiny structure decompression film evaporation concentration system also includes heat pump machine,
Described heat pump machine is connected with condensate circulation groove and feed liquid circulating slot, and at least in order to the condensation in described condensate circulation groove
Reclaim heat energy in liquid and provide heat energy to the feed liquid in feed liquid circulating slot.
In some embodiments, described energy-saving low-temperature tiny structure decompression film evaporation concentration system also includes feed liquid storage
Bucket, described feed liquid bucket is connected with feed liquid circulating slot, and described feed liquid bucket is also followed with condensing units and/or condensed fluid simultaneously
Annular groove connect, and be at least used as condensed fluid reclaims in condensing units entrance condensing units feed liquid in heat energy and/or from institute
State recovery heat energy in the condensed fluid in condensate circulation groove.
Further, in described energy-saving low-temperature tiny structure decompression film evaporation concentration system, each assembly can be integrally disposed, and
Preferably employ between each assembly being interconnected sealing means connect, and, each assembly and consisting of whole system can quilt
It is wrapped in insulation construction, preserved and recovery with reaching the maximum of energy.
Further, described heat energy supply-recovery unit includes heat pump compressor, heat pump condenser, expansion valve and heat pump
The gas phase heat pump fluid outlet of vaporizer, the working medium entrances of described compressor and described vaporizer, the work of described compressor
Matter outlet is connected with the working medium entrances of condenser, and the expanded valve of sender property outlet of described condenser and the working medium of described vaporizer enter
Mouth connection, and between described expansion valve and evaporator with heat pump, it is also formed with being available for the closed access that heat pump fluid circulates, institute
The material inlet stating evaporator with heat pump is connected with the material outlet of the described functional unit comprising heat energy more than needed, and described heat pump steams
Send out device and also there is material outlet, described heat pump condenser be placed in described in require supplementation with the functional unit of heat energy with described need
The functional unit heat transfer of heat energy to be supplemented connects.
Compared with prior art, the energy-saving low-temperature tiny structure decompression film evaporation concentration system structure that the present invention provides is simple,
Recycling of the energy can efficiently be realized, and can high efficiency, be realized with a low cost water, volatile component in the feed liquids such as chemical engineering sewage
With the recycling of nonvolatile element, intellectuality simple to operate, long-term operation performance is stable, long service life, energy-conserving and environment-protective.
Brief description
Fig. 1 is the structural representation of energy-saving low-temperature tiny structure decompression film evaporation concentration system in one embodiment of the invention；
Fig. 2 is a kind of structural representation of evaporation diaphragm in one embodiment of the invention；
Fig. 3 is a kind of structural representation of evaporation module in one embodiment of the invention；
Fig. 4 is the structural representation of energy-saving low-temperature tiny structure decompression film evaporation concentration system in another embodiment of the present invention；
Fig. 5 is the structural representation of energy-saving low-temperature tiny structure decompression film evaporation concentration system in further embodiment of this invention；
Fig. 6 is the structural representation of energy-saving low-temperature tiny structure decompression film evaporation concentration system in yet another embodiment of the invention；
Description of reference numerals: 1- feed liquid cycling element, 2- evaporating film group, 201- feed liquid port, the outlet of 202- distillate are (even
Connect condenser and vacuum pump), 202- feed liquid vaporization chamber, 203- vaporization vacuum chamber, 204- vacuum dividing plate, 205- feed liquid circulation concentrate
Reflux pipe, 206- film group fixing shell, 3- condensing unit, 4- distillation liquid bath, 5- condensate circulation groove, 6- heat energy supply-return
Receive unit, 7- material liquid bucket, 8- pumping, 9- vacuum pump, 10- automatic switchover electromagnetic valve, 11- heat pump machine, 12- evaporating film
Piece, 121- liquor inlet, 122- vapor outlet port (evacuation interface), 123- the first seal combination bayonet socket, 124- evaporating film are strengthened
Fixing net, 125- nanometer low-temperature evaporation film, 126- material liquid outlet/passage, 127- the second evaporating film fixed mechanism, 128- first steam
Send out film fixed mechanism, 129- the second seal combination bayonet socket, h- initial start-up inject the relatively hot feed liquid of heat energy, a-, b- relatively
Colder feed liquid, c- vapor, d- distilled water, e- condensed water, f- heat pump water outlet.
Specific embodiment
In view of deficiency of the prior art, inventor, through studying for a long period of time and putting into practice in a large number, is proposed the present invention's
Technical scheme.In order that the objects, technical solutions and advantages of the present invention become more apparent, as follows will be in conjunction with drawings and Examples
This technical scheme, its implementation process and principle etc. are further explained.
Refer to shown in Fig. 1, in one embodiment of this invention, a kind of energy-saving low-temperature tiny structure decompression film evaporation and concentration system
System includes:
Feed liquid cycling element 1, comprising: feed liquid circulating slot, at least in order to house feed liquid；
Evaporating film group 2, at least in order to steam the part or all of volatile component from the feed liquid that feed liquid circulating slot inputs
Send out and form steam and be delivered to condensing unit, and the feed liquid of concentration is returned and transports in feed liquid circulating slot；
Condensing unit 3, comprising:
Condensing units, at least in order to the steam condensation of input condensing unit 3 is formed distillate and transports to distillation liquid bath 4,
Distillation liquid bath 4, at least in order to accommodating described distillate,
Condensate circulation groove 5, at least described cold in order to the condensed fluid b relatively cold to the supply of described condensing units and collection
The relatively hot condensed fluid of solidifying device output；
And, heat energy supply-recovery unit 6, at least in order to from described energy-saving low-temperature tiny structure decompression film evaporation and concentration system
Reclaim heat energy in the functional unit (such as condensing unit) comprising heat energy more than needed of system, and subtract to described energy-saving low-temperature tiny structure
Functional unit (such as feed liquid cycling element) the middle offer heat energy requiring supplementation with heat energy of press mold evaporation concentration system.
Further, aforementioned feed liquid can be petrochemical industry, coalification, medication chemistry, galvanic anode, dyeing textile, fine chemistry industry
Etc. industry produce wastewater from chemical industry or machinery, electronics processing industry produce containing acid, alkali, the waste water of salt etc.,
And not limited to this.
Further, aforementioned feed liquid circulating slot 5 can be connected with the feed liquid port of evaporating film group 2 by pumping 8, using this pump
Feed liquid in feed liquid circulating slot 5 can be pumped into evaporating film group 2 by Pu 8.
Further, the steam (vapor) outlet of aforementioned evaporation film group 2 is connected with the steam inlet of condensing units, and condensing units
Distillate outlet can be connected with vacuum pump 9 grade, produce negative pressure using vacuum pump 9, evaporating film group 2 can be made defeated in condensing units
The steam going out continuously enters condensing units, and makes distillate continuously transport to distillation liquid bath 4.
Further, the condensate outlet of aforementioned condensing units can be entered by the condensed fluid of pumping 8 and condensate circulation groove 5
Mouth connection.Certainly, the condensate inlet of aforementioned condensing units also can be connected with condensate circulation groove 5, i.e. condensing units with cold
Form condensate circulation loop between lime set circulating slot 5.
Aforementioned condensing units can be selected for suitable condensing plant known to industry, such as cooling coil, sealed thermal insulating circulation spray
Drench heat-absorbing body, plate type heat exchanger, tubular heat exchanger etc..Plate-type condenser for example can be preferably employed in the present embodiment.
Further, aforementioned heat energy supply-recovery unit 6 includes for thermal modules (source pump) and energy recovery module,
Wherein supply thermal modules system to be used for outwardly heat supply, and energy recovery module system is in order to collect heat energy, described heat supply from extraneous
Module and energy recovery module is interconnective so that heat energy can conduct between the rwo, particularly heat energy can be by warm
Can recycling module conduct to for thermal modules.
Further, the condensate outlet of aforementioned condensate circulation groove 5 also can be single with heat energy supply-recovery by pumping 8
The liquid inlet connection of unit 6, and the liquid outlet of aforementioned heat energy supply-recovery unit 6 also can be with heat energy supply-recovery unit 6
Connection, forms the closed circuit of condensed fluid between aforementioned condensate circulation groove 5 and heat energy supply-recovery unit 6, thereby may be used
Being supplied by heat energy-recovery unit 6 is by the energy recovery in condensed fluid.
Further, aforementioned heat energy supply-recovery unit 6 is connected with material fluid bath, particularly aforementioned heat energy supply-reclaim list
The confession thermal modules of unit 6 connects with material fluid bath, nationality with the offer heat energy into material fluid bath so as in feed liquid heated.
In some embodiments it is also possible to supply-return a material liquid outlet 126 of aforementioned material fluid bath and aforementioned heat energy
Receive unit 6 energy recovery module connect, nationality with the case that heat energy contained by the feed liquid in material fluid bath is too high, using aforementioned heat
The energy recovery module of energy supply-recovery unit 6 realizes the recovery of heat energy in feed liquid.
In the present invention, aforementioned evaporation film group 2 can be one or more groups of, if multigroup, it can be tied by building block system
Structure combines.
Refer to shown in Fig. 2-Fig. 3, in some embodiments, aforementioned evaporation film group 2 preferably employs low temperature plate evaporation
Film group.Further, the board-like evaporating film group 2 of described low temperature can include film group fixing shell 206 (can also be support or housing
With combining of support) and plural groups evaporation diaphragm 12, this plural groups evaporation diaphragm 12 be respectively arranged on described film group fixing shell 206
Interior a plurality of within the chambers, adjacent chamber isolation sealed against one another, each chamber includes the feed liquid being separated by described evaporation diaphragm 12
Vaporization chamber 202 and vaporization vacuum chamber 203；The feed liquid port 201 of described feed liquid vaporization chamber 202 and material liquid outlet 126 are all and feed liquid
Circulating slot 5 connects, and the steam (vapor) outlet 122 of described vaporization vacuum chamber 203 is connected with the steam inlet of condensing units.
In some embodiments, it is provided with vacuum dividing plate 204 between adjacent chamber.
In some embodiments, this plural groups evaporation diaphragm 12 is arranged parallel, and the feed liquid of all feed liquid vaporization chambers 202
Import 121 is arranged in parallel, and material liquid outlet 126 is also arranged in parallel, and simultaneously all steam (vapor) outlets 122 vaporizing vacuum chambers 203 are also simultaneously
Connection setting.
In some embodiments, described evaporation diaphragm 12 include nanometer evaporating film 125 and with described nanometer evaporating film 125
The evaporating film being fixedly connected strengthens fixing net 124, and described evaporation diaphragm 12 two ends are respectively through the first evaporating film fixed mechanism 128 He
Second evaporating film fixed mechanism 127 is fixedly connected with described housing, is distributed with described on described first evaporating film fixed mechanism 128
The feed liquid port 201 of feed liquid vaporization chamber 202 and the steam (vapor) outlet 122 of described vaporization vacuum chamber 203, described second evaporating film is fixed
The material liquid outlet 126 of described feed liquid vaporization chamber 202 is distributed on mechanism 127.
Aforesaid nanometer evaporating film preferably employs hydrophobic porous nanometer evaporating film, operationally can be with evaporating film both sides
Steam pressure difference is motive force, and in cold side condensation enrichment (obtaining pure component) after making hot side steam molecule pass through fenestra, it has
Small volume, action required temperature and pressure is low, the features such as to the theoretical rejection of fixedness component up to 100%, can process
Separate heat-sensitive substance and high-concentration waste water etc..
Further, aforesaid nanometer evaporating film preferably employs known ptfe/pvdf low temperature flat board nanometer evaporating film, its
Average pore size about 0.2～0.324nm nanometer, thickness about 2.2～5.5mm.Its working condition may include that hot side temperature 45～75
DEG C, operating pressure 0.3-0.5mpa, 10～25 DEG C of cold-side temperature, operate micro-vacuum negative pressure pressure 0.2～0.42mpa.
In some embodiments, described first evaporating film fixed mechanism 128 or the second evaporating film fixed mechanism 127 both sides
It is respectively equipped with the first seal combination bayonet socket 123 and the second seal combination bayonet socket 129, one of them first evaporating film fixed mechanism
128 or second first seal combination bayonet socket 123 of evaporating film fixed mechanism 127 can be solid with another adjacent first evaporating film
Determine mechanism 128 or the second seal combination bayonet socket 129 sealing of the second evaporating film fixed mechanism 127 combines.
Aforementioned energy recovery-feed unit is at least in order to by from relatively hot cold described in input condensate circulation groove
Reclaim heat energy during solidifying, shift energy to the feed liquid heat supply in feed liquid circulating slot, by Carnot cycle and inverse card simultaneously
Promise circulating heat pump unit or heat transmission equipment reclaim heat energy.
Further, described heat energy supply-recovery unit (i.e. heat pump) operationally, by compressor operation, is driven
Dynamic heat pump runs, and by heat-exchanger rig (evaporator with heat pump), the cooling medium (condensed fluid) in condensing units is lowered the temperature, is
The cooling of condensing units provides low-temperature receiver, transfers to the heat absorbing in condensing units in feed liquid circulating slot simultaneously, thus real
The recovery of existing energy and utilization.
Further, described heat pump can be mainly by compressor, condenser, expansion valve and the big part structure of vaporizer 4
Become.The transmission of heat is completed by certain working medium that (the heat pump fluid side in pipe, heat pump fluid (following abbreviation working medium) is according to feed liquid
Physicochemical characteristic can select r22, r134, r134a, r142b, r152a), in vaporizer, working medium is evaporated at a lower temperature,
Absorb heat, itself is changed into gaseous state from liquid, and cooled temperature of charge reduces, then gas-phase working medium enters compressor, pressure
It is reduced to elevated pressures, after compression, the temperature of working medium raises, then enters condenser, working medium releases heat within the condenser, itself becomes
Become liquid；Expanded the cutting down of liquid refrigerant expand into temperature reduction after low pressure, is again introduced into vaporizer, this completes a heat
Power circulates.It should be noted that the condenser in heat pump cycle is all for relative working medium with vaporizer.Working medium is in condenser
Middle condensation, then releases heat, thus for material condenser actual be comparable to heater act in vaporizer evaporation,
Itself absorbs heat, therefore the actual effect being comparable to cooler of vaporizer for material.
Described expansion valve and evaporator with heat pump (heat pump fluid side) composition closed access, wherein fill with heat pump fluid circulation
Flowing.The material medium of the heat pump fluid in heat pump and feed liquid evaporation and concentration presses different flow process co-ordinations respectively.Heat pump work
Matter enters heat pump condenser (heat pump condenser is located in the feed liquid container in evaporation and concentration room) through compressor boosting after heating up,
In heat pump condenser pipe, exothermic condensation enters expansion valve for liquid, is changed into the heat pump fluid liquid (companion of low-pressure low-temperature after throttling
With there being a small amount of flash gas), and enter evaporator with heat pump or enter heat exchanger and carry out cold and hot energy exchange recovery.This kind of heat pump
Unit carries out energy recycling through multi-group heat exchanger, and the vaporizer of condensation side absorbs thermal energy storage in water or conduction oil
Then vaporize heat release by working medium to transfer heat energy in heated side solution, carry out heating ceaselessly recycling to material solution
Heat energy.Water source cold-heat is stable with heat pump set system, and Energy Efficiency Ratio, up to cop=5～9, in system operation, is no fired
Burn, no any solid-state, liquid or gaseous contaminant discharge.
Further, described compressor can be selected from screw, vortex, piston type, rotator type or centrifugal compressor
Deng, but not limited to this.
Further, described heat-exchanger rig is selected from shell-tube type, bushing type or plate-sheet-type heat-exchanger rig etc., but is not limited to
This.
Referring to shown in Fig. 1, the energy-saving low-temperature tiny structure of the present embodiment reduces pressure film evaporation concentration system operationally,
Heat energy can be injected into material fluid bath with the source pump of heat energy supply-recovery unit 6 and (refering to direction shown in arrow h, inject heat energy
Mode can be various, for example thermal modules input temp can also be supplied to the heating coil pipe etc. of material fluid bath by source pump
Hot water f for 85～90 DEG C etc., but not limited to this), make the feed liquid in material fluid bath be heated to design temperature, afterwards with pumping 8
After will be heated, relatively hot feed liquid a (such as temperature can be 65 DEG C) transports to evaporating film group 2, feed liquid in evaporating film group 2
In all or part of volatile component (such as water) be evaporated into steam (such as vapor c) output, and by the feed liquid of concentration then
Transported to material fluid bath by returning.In the presence of the vacuum pump 9 being connected with condensing units, dedicated steam continue into condensing units and with
Condensed fluid carries out heat exchange, thus be condensed into distillate (such as distilled water d) and transport to distillation liquid bath 4.And after heat exchange shape
The relatively hot condensed fluid becoming (as condensed water e) is transported to condensation liquid bath, and then also can be transported to heat energy confession by pumping 8
To-recovery unit 6 so as in heat energy by the energy recovery module collection of heat energy supply-recovery unit 6, and be consequently formed
Relatively cold condensed fluid is returned transports to condensation liquid bath, also can be recycled from condensation liquid bath input condensing units more afterwards.
In some cases it is also possible to feed liquid higher for temperature in material fluid bath is transported to by heat energy supply-recovery unit 6 by pumping, profit
Realize the recovery of heat energy in feed liquid with energy recovery module therein.
The energy-saving low-temperature tiny structure decompression film evaporation concentration system of the present invention designs by aforementioned structure, it is possible to achieve Kano
Circulation and inverse Carnot cycle, and then realize recycling completely of heat and cold energy, that is, achieve the utilization of energy maximization
Reclaim.
And, the energy-saving low-temperature tiny structure of present invention decompression film evaporation concentration system mainly utilize in low-temperature heat source and liquid-
Liquid heat exchange, system security row is high, life-span length, and wherein working life under steam condition for the corrosivity heat exchanger components is than existing
Technology can lift 2～5 times, and under middle cryogenic conditions, lifetime stability greatly improves.The energy-saving low-temperature tiny structure of the present invention simultaneously
Decompression film evaporation concentration system can be designed with standard and modular and produce, thus giving more to the reliability of system, stability
Sound assurance.
The energy-saving low-temperature tiny structure decompression film evaporation concentration system of the present invention can be real under rough vacuum and low evaporating temperature
The low-temperature evaporation concentration systems of existing feed liquid, and there is high efficiency of energy utilization, energy consumption is low, and lifetime of system and stability are existing
5-20 times of system.
Postscript, the energy-saving low-temperature tiny structure decompression film evaporation concentration system of the present invention has no for the type of feed liquid, composition
Limit, belong to intelligent simplification and be disposably processed into the technology of high standard water quality (water electric conductivity after the system is processed is low
In 5 μm), disposably can directly drink the effect reaching distilled water ultra-pure water, for example molten in process highly corrosive and high salinity
Liquid, is also applicable during various organic wastewater ammonia nitrogen waste water.For the feed liquid containing a large amount of float, also only need to lead to
Cross simple pretreatment (as sedimentation, filtration etc.), and the operations such as adjustment ph value need not be aided with.
Additionally, it is to be particularly noted that the energy-saving low-temperature tiny structure decompression film evaporation concentration system of the present invention is with micro- negative
Pressure vacuum type distillation membrane technology, is adopted as negative pressure technique using vacuum pump auxiliary and film both sides adopts heat pump to control the temperature difference of temperature
Power technology, need not be as ordinary hollow film distillation technology, and hot junction will continue heat supply, and cold side needs persistently to freeze, and only needs
By Carnot cycle-inverse Carnot cycle combination, fire end efficiency improves 3-5 times, and the heat energy transfer of refrigeration end is folded to fire end again
Plus 2 times, so that energy consumption is greatly reduced than prior art.One ton of water of evaporation calculated power consumption about 600kw with pure electricity in the past, using this
Invention energy consumption only needs 600kw/5 ≈ 120kw, if such system 24h runs peak electricity average 0.8 yuan/degree=120*0.8 of adding valley electricity
One ton of water of=96 yuan/evaporation, and can directly be processed into drinking water standard or greater degree distilled water.Highly difficult with respect to existing
Wastewater processing technology technique needs 300-400 unit/t, can substantially reduce processing cost.And by using nanoscale ptfe/
Can pass through after pvdf low-temperature evaporation film, only small molecule (as water, ethanol etc.) gasification, produce after processing for various sewage and waste waters
Raw high-purity distilled water can directly be drunk, and recycling is reclaimed.
Postscript, the energy-saving low-temperature tiny structure decompression film evaporation concentration system of the present invention can also have other structure shapes
Formula.
For example, refer to shown in Fig. 4, in another embodiment of the invention, the decompression film evaporation of this energy-saving low-temperature tiny structure
Concentration systems may also include feed liquid bucket 7, and described feed liquid bucket 7 is connected with feed liquid circulating slot, and in described material liquid
It is additionally provided with automatic switchover electromagnetic valve 10, at least in order to open or close described path between bucket 7 and feed liquid circulating slot；With
Shi Suoshu feed liquid bucket 7 is also connected with condensing units and/or condensate circulation groove 5, and is at least used as condensed fluid in condensation dress
Put the heat energy reclaiming in the feed liquid entering condensing units and/or reclaim heat from the condensed fluid in described condensate circulation groove 5
Energy.
For example, refer to shown in Fig. 5, in another embodiment of the present invention, the decompression film evaporation of this energy-saving low-temperature tiny structure
Concentration systems also include heat pump machine 11, and described heat pump machine 11 is connected with condensate circulation groove 5 and feed liquid circulating slot, and at least in order to
Reclaim heat energy and provide heat energy to the feed liquid in feed liquid circulating slot from the condensed fluid in described condensate circulation groove 5.
For example, refer to shown in Fig. 6, in one more embodiment of the present invention, the decompression film evaporation of this energy-saving low-temperature tiny structure
Concentration systems also include heat pump machine 11 and the feed liquid bucket 7 being connected with heat pump machine 11, described feed liquid bucket 7 and feed liquid circulation
Groove connects, and described heat pump machine 11 is connected with condensate circulation groove 5, and at least in order to the condensation in described condensate circulation groove 5
Reclaim heat energy in liquid and provide heat energy to the feed liquid in feed liquid bucket 7.
It should be appreciated that above-described embodiment technology design only to illustrate the invention and feature, its object is to allow and be familiar with this
The personage of item technology will appreciate that present disclosure and implements according to this, can not be limited the scope of the invention with this.All
The equivalence changes made according to spirit of the invention or modification, all should be included within the scope of the present invention.
Claims (10)
1. a kind of energy-saving low-temperature tiny structure decompression film evaporation concentration system is it is characterised in that include:
Feed liquid cycling element, comprising: feed liquid circulating slot, at least in order to house feed liquid；
Evaporating film group, at least in order to form the part or all of volatile component evaporation from the feed liquid that feed liquid circulating slot inputs
Steam is simultaneously delivered to condensing unit, and the feed liquid of concentration is returned and transports in feed liquid circulating slot；
Condensing unit, comprising:
Condensing units, at least in order to form distillate and to transport to distillation liquid bath the steam condensation of input condensing unit,
Distillation liquid bath, at least in order to house described distillate,
Condensate circulation groove, at least in order to the condensed fluid relatively cold to the supply of described condensing units and the described condensing units of collection
The relatively hot condensed fluid of output；
And, heat energy supply-recovery unit, at least in order to the bag of the film evaporation concentration system that reduces pressure from described energy-saving low-temperature tiny structure
Heat energy is reclaimed in functional unit containing supply absorption cycle heat energy, and to described energy-saving low-temperature tiny structure decompression film evaporation and concentration
Requiring supplementation with of system provides heat energy in the functional unit of heat energy.
2. energy-saving low-temperature tiny structure according to claim 1 decompression film evaporation concentration system it is characterised in that: described evaporation
Film group includes housing and plural groups evaporation diaphragm, and this plural groups evaporation diaphragm is respectively arranged on a plurality of chambers in described housing
Interior, adjacent chamber isolation sealed against one another, each chamber includes feed liquid vaporization chamber and the vaporization vacuum being separated by described evaporation diaphragm
Room；The feed liquid port of described feed liquid vaporization chamber is all connected with feed liquid circulating slot with material liquid outlet, the steam of described vaporization vacuum chamber
Outlet is connected with the steam inlet of condensing units.
3. energy-saving low-temperature tiny structure according to claim 2 decompression film evaporation concentration system it is characterised in that: adjacent chamber
Between be provided with vacuum dividing plate.
4. energy-saving low-temperature tiny structure according to claim 2 decompression film evaporation concentration system it is characterised in that: this plural groups
Evaporation diaphragm is arranged parallel, and the liquor inlet of all feed liquid vaporization chambers is arranged in parallel, and material liquid outlet is also arranged in parallel, simultaneously institute
The steam (vapor) outlet having vaporization vacuum chamber is also arranged in parallel.
5. energy-saving low-temperature tiny structure according to claim 2 decompression film evaporation concentration system it is characterised in that: described evaporation
Diaphragm includes nanometer evaporating film and the fixing net of evaporating film reinforcement being fixedly connected with described nanometer evaporating film, described evaporation diaphragm two
End is fixedly connected with described housing through the first evaporating film fixed mechanism and the second evaporating film fixed mechanism respectively, described first evaporation
The feed liquid port of described feed liquid vaporization chamber and the steam (vapor) outlet of described vaporization vacuum chamber be distributed with film fixed mechanism, described second
The material liquid outlet of described feed liquid vaporization chamber is distributed on evaporating film fixed mechanism.
6. energy-saving low-temperature tiny structure according to claim 5 decompression film evaporation concentration system it is characterised in that: described first
Evaporating film fixed mechanism or the second evaporating film fixed mechanism are respectively provided on two sides with the first seal combination bayonet socket and the second seal combination
Bayonet socket, the first seal combination bayonet socket of one of them first evaporating film fixed mechanism or the second evaporating film fixed mechanism can be with phase
Second seal combination bayonet socket sealing of another adjacent the first evaporating film fixed mechanism or the second evaporating film fixed mechanism combines.
7. energy-saving low-temperature tiny structure decompression film evaporation concentration system according to claim 1 is it is characterised in that also include heat
Pump machine and the feed liquid bucket being connected with heat pump machine, described feed liquid bucket is connected with feed liquid circulating slot, described heat pump machine with cold
Lime set circulating slot connects, and at least deposits in order to recovery heat energy from the condensation process in described condensate circulation groove and to feed liquid
Feed liquid in storage tank provides heat energy.
8. energy-saving low-temperature tiny structure decompression film evaporation concentration system according to claim 1 is it is characterised in that also include heat
Pump machine, described heat pump machine is connected with condensate circulation groove and feed liquid circulating slot, and at least in order in described condensate circulation groove
Condensed fluid in reclaim heat energy and in feed liquid circulating slot feed liquid provide heat energy.
9. energy-saving low-temperature tiny structure decompression film evaporation concentration system according to claim 1 is it is characterised in that also include expecting
Liquid bucket, described feed liquid bucket is connected with feed liquid circulating slot, simultaneously described feed liquid bucket also with condensing units and/or cold
Lime set circulating slot connect, and be at least used as condensed fluid reclaims in condensing units enter condensing units feed liquid in heat energy with/
Or reclaim heat energy from the condensed fluid in described condensate circulation groove.
10. energy-saving low-temperature tiny structure according to claim 1 decompression film evaporation concentration system it is characterised in that: described heat
Heat pump compressor, heat pump condenser, expansion valve and evaporator with heat pump, the working medium of described compressor can be included by supply-recovery unit
Entrance and the gas phase heat pump fluid outlet of described vaporizer, the sender property outlet of described compressor and the working medium entrances of condenser
Connection, the expanded valve of sender property outlet of described condenser is connected with the working medium entrances of described vaporizer, and described expansion valve and heat
Be also formed with being available for the closed access that heat pump fluid circulates between pump vaporizer, the material inlet of described evaporator with heat pump with
The material outlet connection of the described functional unit comprising heat energy more than needed, and described evaporator with heat pump also has material outlet, described
Heat pump condenser requires supplementation with the functional unit of heat energy and passes with the described functional unit requiring supplementation with heat energy described in being placed in
Thermally coupled.
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| CN201610980397.4A CN106345303A (en) | 2016-11-08 | 2016-11-08 | Energy-saving low-temperature micro-negative pressure decompressing membrane evaporation and concentration system |
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| CN201610980397.4A CN106345303A (en) | 2016-11-08 | 2016-11-08 | Energy-saving low-temperature micro-negative pressure decompressing membrane evaporation and concentration system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109269151A (en) * | 2018-09-07 | 2019-01-25 | 湖南创化低碳环保科技有限公司 | The enrichment facility of air energy heat pump solution |
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Effective date of registration: 20170810 Address after: Suzhou City, Jiangsu province 215300, Kunshan Development Zone Six Road No. 16 room 4 Applicant after: KUNSHAN SHANGDAOYUAN ENVIRONMENTAL TECHNOLOGY CO.,LTD. Address before: Liu Ping Dian Xiang Qiao Cun, Shangshui County of Zhoukou City, Henan province 466100 three Group No. 101 Applicant before: Lu Zhengchun |
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