CN207760093U - A kind of device recycling organic solvent from low-concentration organic waste water - Google Patents
A kind of device recycling organic solvent from low-concentration organic waste water Download PDFInfo
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- CN207760093U CN207760093U CN201721834240.7U CN201721834240U CN207760093U CN 207760093 U CN207760093 U CN 207760093U CN 201721834240 U CN201721834240 U CN 201721834240U CN 207760093 U CN207760093 U CN 207760093U
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Abstract
The utility model discloses a kind of device recycling organic solvent from low-concentration organic waste water, including raw material liquid storage tank, the preferential separation of organic matter film thoroughly unit, condenser and phase separator, the penetrating fluid outlet of the preferential separation unit of organic matter film thoroughly connects the condenser inlet, the condensator outlet connects the phase separator, and the water layer taphole of the phase separator connects the raw material liquid storage tank.The utility model has device advantages of simple, and easy to operate and safe, energy consumption is small, and operating cost is low, the advantages that easily implementation, can be widely applied in processing of the low concentration containing organic wastewater.
Description
Technical field
The utility model is related to the recycling of organic solvent, and in particular to one kind recycles organic molten from low-concentration organic waste water
The device of agent.
Background technology
Organic solvent is frequently used for extracting or is stripped in chemical industry and medicine production, this kind of organic solvent usually slightly soluble
Yu Shui is finally present in low concentration in waste water, since COD value of waste water is higher, is first recycled from these production waste water organic molten
After matchmaker, then wastewater treatment is carried out, can not only reduce the COD value of waste water, reduces the processing pressure of waste water, while can also will return
The organic solvent of receipts is continuing with, and reduces production cost.In addition, under normal circumstances, be slightly soluble in water organic solvent and water it is mutual
Solubility is little, but under the conditions of having existing for other substances, mutual solubility can be caused to significantly increase, if not recycled, after giving
Continuous technique impacts, to increase production cost.
Existing recovery technology is mainly using change temperature, pressure or using the side such as selective absorbent and permoselective membrane
Method carrys out concentration and separation organic matter, includes mainly the way of distillation, resin adsorption method, membrane-base absorption technology etc., this kind of more or less presence
Some shortcomings, way of distillation high energy consumption, cost recovery is high, and high temperature distillation forms the processing that macromolecule polyalcohol increases follow-up waste water
Difficulty.Resin adsorption method pretreatment difficulty is big, and macroreticular resin toxic degradation object and pore-foaming agent have pollution, operation to extract component
Expense is also higher.Membrane separation process is the separation process based on material, is regulated and controled to the physico-chemical property and micro-structure of material, is realized
Organic matter preferentially penetrates film and permeates the purpose of lateral enrichment and recycling in film, energy-efficient, environmental-friendly, is a kind of great application
The novel recovery method of foreground.
Utility model content
The purpose of this utility model is that proposing a kind of device recycling organic solvent from low-concentration organic waste water, the dress
On the one hand high-purity organic solvent can be obtained from low concentration wastewater by setting, on the other hand greatly mitigate follow-up treatment of Organic Wastewater
Difficulty has device advantages of simple, and easy to operate and safe, energy consumption is small, and operating cost is low, can extensive use the advantages that easily implementation
In processing of the low concentration containing organic wastewater, especially handle water in solubility less and the having there are certain density contrast with water
The waste water of machine object opens a kind of new approaches for organic solvent waste water reclaiming recycling in chemical and medicine industry production.
To achieve the above object, technical solution used by the utility model is：
A kind of device recycling organic solvent from low-concentration organic waste water, which is characterized in that including raw material liquid storage tank, excellent
First organic matter film detaches unit, condenser and phase separator thoroughly,
The penetrating fluid outlet of the preferential separation unit of organic matter film thoroughly connects the condenser inlet, and the condenser goes out
Mouth connects the phase separator,
The water layer taphole of the phase separator connects the raw material liquid storage tank.
Further, described device further includes seepage remaining liquid storage tank, heat exchanger, preheater and vacuum pump set, the vacuum machine
Group connects the penetrating fluid that the preferential organic matter film thoroughly detaches unit by the condenser and exports, for the preferential saturating organic matter
UF membrane unit provides power, and the seepage remaining liquid outlet of the preferential separation unit of organic matter film thoroughly connects institute by the heat exchanger
Seepage remaining liquid storage tank is stated, the raw material liquid storage tank passes sequentially through the heat exchanger and connects the preferential saturating organic matter with the preheater
The entrance of UF membrane unit, the raw material liquid storage tank are provided with delivery pump between detaching unit with the preferential saturating organic matter film.
Material liquid is delivered to the seepage remaining liquid that heat exchanger first detaches unit with preferential organic matter film thoroughly from raw material liquid storage tank and exchanges heat, then
Concurrent heating is carried out to material liquid into preheater, the preferential separation unit of organic matter film thoroughly is subsequently entered and is detached.
Further, crude product storage tank is provided between the condenser and the phase separator.
Further, the preferential separation unit of organic matter film thoroughly includes N number of preferential organic matter film component thoroughly, N be more than
Integer equal to 1, N number of preferential organic matter film separating film module series, parallel or the series and parallel Hybrid connections thoroughly.Pass through film
The increase and decrease of component and the production capacity and separating effect of the adjustable film separation system of series-parallel series.As N=1, only one is excellent
First organic matter film component is connected in pipeline thoroughly, and as N=2, N number of preferential organic matter film separating film module thoroughly connects in series or in parallel
In pipeline, as N >=3, N number of preferential organic matter film separating film module series, parallel or series and parallel Hybrid connections thoroughly are in pipe
Lu Zhong.
Further, the preferential organic matter film component thoroughly is tubular type, rolling or hollow fiber membrane format.
Further, the film in the preferential organic matter film component thoroughly is the composite membrane of at least two membranes, described compound
Film includes active layer and supporting layer.
Further, the active layer is preferential through ester, the fine and close functional membrane of alkane, ether or ketone.
Further, the material of the active layer is poly- caprylil methicone（POMS）, dimethyl silicone polymer
（PDMS）Or previous materials is one or more of polymer-modified.
Further, the active layer thickness is 1 ~ 10 μm.
Further, the supporting layer is inorganic porous membrane, and membrane aperture is 30 ~ 800 nm.
Further, during the film in the preferential organic matter film component thoroughly further includes between the active layer and supporting layer
Between transition zone.
Further, the intermediate layer material is Styrene-Butadiene-Styrene Block Copolymer（SBS）, polyethers
Acid imide（PEI）, Kynoar（PVDF）, soluble intrinsic microporous polymer（PIM-1）Or the modified poly of previous materials
At least one of object.
Further, it is 5 ~ 80 nm that, which there are hole, average pore size in the surface of the intermediate layer,.
When recycling from low-concentration organic waste water organic solvent using above-mentioned apparatus, using following steps：
（1）Low-concentration organic waste water is conveyed into preferential organic matter film thoroughly with the liquid form of certain temperature and detaches unit
In；
（2）After the preferential separation of organic matter film thoroughly unit infiltration evaporation processing, organic matter in material liquid through film and with
For gaseous form in the infiltration lateral enrichment of film, the retentate side of film obtains seepage remaining liquid；
（3）The enriched gas that per-meate side obtains enters the organic solution of formation higher concentration after condenser condensation, with laggard
Enter phase separator；
（4）After phase separator detaches, the organic matter solvent product of water layer solution and high-purity, wherein water layer solution are obtained
It returns to the raw material liquid storage tank and enters multi-cycle separation next time.
Step（1）The concentration of organic matter is dense less than the organic matter saturated aqueous solution in the low-concentration organic waste water
Degree；Step（3）The concentration of organic matter is higher than the concentration of the organic matter saturated aqueous solution in the organic solution of the higher concentration.
Preferably, preferably using Roots-liquid ring vacuum pump assembly, the vacuum degree of vacuum pump set is the vacuum pump set
100Pa~9000Pa。
Preferably, first turn on liquid rotary pump when starting vacuum pump set, etc. vacuum starting Roots when being down to a certain degree
Pump, you can to ensure vacuum requirement while also solving phenomena such as dry pump easy tos produce electrostatic, spark causes system to be endangered
The security risk of dangerous situation condition overcomes the disadvantage for only using that vacuum degree is difficult to realize under liquid rotary pump situation and operating cost is high.
The utility model has the advantages that：
（1）The device can recycle the organic solvent of content >=95% from the organic wastewater of low concentration, and quality meets
The quality standard of existing raw material can be back to production, substantially reduce organic solvent consumption, reduce production cost, have
Significant economic benefit.
（2）Content of organics significantly lowers in being discharged after wastewater treatment, reduces organic wastewater and directly carries out biochemical treatment
Difficulty and cost.
（3）The device may replace Conventional espresso, resin adsorption etc., and simple for process rationally processing capacity is big, and the rate of recovery is high,
Easy to operate and safe, energy consumption is small, and operating cost is low.
Description of the drawings
Fig. 1 is the schematic device described in the utility model that organic solvent is recycled from low-concentration organic waste water.
Wherein, 1 is raw material liquid storage tank, and 2 be delivery pump, and 3 be heat exchanger, and 4 be preheater, and 5 be preferential organic matter film point thoroughly
Disembark group, 6 be condenser, and 7 be crude product storage tank, and 8 be vacuum pump set, and 9 be phase separator, and 10 be seepage remaining liquid storage tank, A be ooze it is remaining
Liquid, B are the organic matter solvent products of high-purity.
Specific implementation mode
It is further discussed below the utility model with reference to embodiment：
A kind of device recycling organic solvent from low-concentration organic waste water, as shown in Figure 1, including raw material liquid storage tank 1, excellent
First organic matter film detaches unit 5, condenser 6 and phase separator 9, the penetrating fluid of the preferential separation unit 5 of organic matter film thoroughly thoroughly
Outlet connects the entrance of the condenser 6, and the outlet of the condenser 6 connects the phase separator 9, the phase separator 9
Water layer taphole connects the raw material liquid storage tank 1.
Described device further includes seepage remaining liquid storage tank 10, heat exchanger 3, preheater 4 and vacuum pump set 8, and the vacuum pump set 8 connects
The infiltration outlet that the preferential organic matter film thoroughly detaches unit 5 is connect, is provided for the preferential separation unit 5 of organic matter film thoroughly dynamic
Power, the seepage remaining liquid of the preferential separation unit 5 of organic matter film thoroughly is exported connects the seepage remaining liquid storage tank by the heat exchanger 3
10, the raw material liquid storage tank 1 passes sequentially through the heat exchanger 3 and the preheater 4 connects the preferential organic matter film separation thoroughly
The entrance of unit 5, the raw material liquid storage tank are provided with delivery pump 2 between detaching unit with the preferential saturating organic matter film.
Crude product storage tank 7 is provided between the condenser 6 and the phase separator 9.
The preferential separation unit of organic matter film thoroughly includes N number of preferential organic matter film component thoroughly, and N is whole more than or equal to 1
Number, N number of preferential organic matter film separating film module series, parallel or the series and parallel Hybrid connections thoroughly.Pass through the increasing of membrane module
Subtract the production capacity and separating effect with the adjustable film separation system of series-parallel series.
The preferential organic matter film component thoroughly is tubular type, rolling or hollow fiber membrane format.
Film in the preferential organic matter film component thoroughly is the composite membrane of at least two membranes, and the composite membrane includes activity
Layer and supporting layer.
The active layer is preferential through ester, the fine and close functional membrane of alkane, ether or ketone.
The material of the active layer is poly- caprylil methicone（POMS）, dimethyl silicone polymer（PDMS）Or aforementioned material
Material it is one or more of polymer-modified.
The active layer thickness is 1 ~ 10 μm.
The supporting layer is inorganic porous membrane, and membrane aperture is 30 ~ 800 nm.
Film in the preferential organic matter film component thoroughly further includes the intermediate layer between the active layer and supporting layer.
The intermediate layer material is Styrene-Butadiene-Styrene Block Copolymer（SBS）, polyetherimide
（PEI）, Kynoar（PVDF）, soluble intrinsic microporous polymer（PIM-1）Or previous materials it is polymer-modified in extremely
Few one kind.
It is 5 ~ 80 nm that, which there are hole, average pore size in the surface of the intermediate layer,.
To reach energy-saving effect, the present apparatus by delivery pump 2 by material liquid from raw material liquid storage tank 1 be delivered to heat exchanger 3 with
The seepage remaining liquid of the preferential separation unit 5 of organic matter film thoroughly exchanges heat, and carries out concurrent heating to material liquid subsequently into preheater 4, then
Into film separation system.
Concrete operation step is as follows：
（1）By low-concentration organic waste water, preheater 3 is entered by delivery pump 2, is reached after predetermined temperature in liquid form
Into in the preferential separation unit 5 of organic matter film thoroughly；
（2）After the preferential separation of organic matter film thoroughly unit infiltration evaporation processing, the organic matter in material liquid preferentially penetrates film
And in the form of a vapor in the infiltration lateral enrichment of film, while the seepage remaining liquid A that the retentate side of film is trapped；
（3）The enriched gas that per-meate side obtains enters condenser 6 under the suction of vacuum pump set 8, is formed after condensation higher
The organic solution of concentration subsequently enters phase separator 9；
（4）After the separation of phase separator 9, water layer solution and the organic matter solvent product B of high-purity are obtained, wherein water layer is molten
Liquid returns to raw material liquid storage tank 1 and enters multi-cycle separation next time.
The concentration of organic matter is less than the concentration of its saturated aqueous solution in the low-concentration organic waste water, passes through the increasing of film unit
Subtract the production capacity and separating effect that film separation system is allocated with the series-parallel series of membrane module so that is formed after condensation is higher
The concentration of organic matter is saturated the concentration of organic aqueous solution higher than it in the organic solution of concentration.In this way, organic matter could be with water
Layering forms two-phase, and then is separated the two by phase separator.
Embodiment 1
During producing the antibiotic such as penicillin, common butyl acetate is extracted or is stripped certain Medicine Factory, due to second
Acid butyl ester is slightly soluble in the characteristic of water, and waste water has dissolved a certain amount of butyl acetate.Using above-mentioned apparatus, wherein described preferentially have thoroughly
Machine object membrane module is tubular type, and wherein film is containing the double-layered compound film for including active layer and supporting layer, and wherein active layer material is
Poly- caprylil methicone（POMS）, active layer thickness is 1 μm, and supporting layer membrane aperture is 800 nm, and supporting layer material is oxidation
Aluminium-zirconium oxide inoranic membrane, material liquid are to contain 0.5% from waste water workshop（w%）Butyl acetate aqueous solution is stored up into material liquid
Tank enters preheater by the delivery pump that gauge pressure is 0.05 Mpa, is preheating to after 35 DEG C in liquid form into preferential thoroughly organic
The upstream side of film in object UF membrane unit.The downstream side of film forms component by the way of vacuumizing plus condensing in the upstream and downstream of film
Vapor partial pressure it is poor, the butyl acetate in raw material is crossed after film to film downstream side, and is vaporized into steam under vacuum conditions, cross film steam
Vapour enters condenser, vacuum degree 100Pa under vacuum pump set suction, and condensation temperature is -20 DEG C, and higher concentration is formed after condensation
Butyl acetate aqueous solution（Product）Into crude product storage tank.Be trapped in film upstream side do not had the liquid of film by heat exchanger with
It is discharged after raw material heat exchange cooling.After film process, cross in film liquid, a concentration of the 20% of butyl acetate, compared with the concentration of material liquid 0.5%
Improve 40 times；The content of butyl acetate is less than 0.05% and can be expelled directly out in trapped fluid.Film liquid is crossed further by phase separator point
Layer, upper layer is gas producing formation, and the butyl acetate product of concentration >=98% can be obtained, and lower layer is waste water layer, is 0.7%（w%）Acetic acid fourth
Aqueous solution of ester, waste water solution return to raw material liquid storage tank and enter multi-cycle separation next time.
Embodiment 2
Using above-mentioned apparatus, wherein the preferential organic matter film component thoroughly is rolling, wherein film be containing including active layer,
The sandwich diaphragm of intermediate layer and supporting layer, wherein active layer material are dimethyl silicone polymer（PDMS）With poly- octyl first
Radical siloxane（POMS）Composite, active layer thickness are 5 μm, and intermediate layer material is polyetherimide（PEI）It is inclined with gathering
Vinyl fluoride（PVDF）Composite, supporting layer membrane aperture are 600 nm, and material liquid is to contain 0.3% from waste water workshop（w%）Second
Acid butyl ester aqueous solution enters preheater, after being preheating to 50 DEG C into raw material liquid storage tank by the delivery pump that gauge pressure is 0.25 Mpa
Enter the upstream side of film in the preferential separation unit of organic matter film thoroughly in liquid form.The downstream side of film, which uses to vacuumize, adds condensation
The vapor partial pressure that mode forms component in the upstream and downstream of film is poor, and the butyl acetate in raw material is crossed after film to film downstream side, and true
It is vaporized into steam under Altitude, crosses film steam and enters condenser, vacuum degree 500Pa, condensation temperature under vacuum pump set suction
It is 0 DEG C, forms the butyl acetate aqueous solution of higher concentration after condensation（Product）Into crude product storage tank.Film upstream side is trapped in not have
There is the liquid of film by being discharged after heat exchanger and raw material heat exchange cooling.After film process, cross in film liquid, the concentration of butyl acetate
It is 18%；The content of butyl acetate is less than 0.03% and can be expelled directly out in trapped fluid.Film liquid is crossed further to be layered by phase separator,
Upper layer is gas producing formation, and the butyl acetate product of concentration >=98.5% can be obtained, and lower layer is waste water layer, is 0.7%（w%）Acetic acid fourth
Aqueous solution of ester, waste water solution return to raw material liquid storage tank and enter multi-cycle separation next time.
Embodiment 3
In certain epoxy resin chemical plant production process, a large amount of epoxychloropropane waste water are generated, epoxychloropropane is slightly soluble in water,
Solubility is about 6g/100mL in water at normal temperature.Because epichlorohydrin content is low (about 2~5%) in the waste water, can not directly make
For production raw material；Again because the chemical oxygen consumption (COC) (COD) of the waste water is up to 50000 mg/L, biochemical treatment can not be directly carried out,
If direct emission is bound to cause serious pollution and wastage of material.Using above-mentioned apparatus, wherein the preferential organic matter film component thoroughly
For hollow fiber film type, wherein film is containing the double-layered compound film for including active layer and supporting layer, and wherein active layer material is poly-
Caprylil methicone（POMS）It is polymer-modified, active layer thickness be 10 μm, supporting layer membrane aperture be 400 nm, material liquid
Material liquid is containing 3% in storage tank（w%）Epoxychloropropane aqueous solution enters preheater by the delivery pump that gauge pressure is 0.15 Mpa,
It is preheating to the upstream side for entering film in the preferential separation unit of organic matter film thoroughly after 60 DEG C in liquid form.The downstream side of film is using pumping
The vapor partial pressure that vacuum adds the mode of condensation to form component in the upstream and downstream of film is poor, and the epoxychloropropane in raw material is crossed after film to film
Downstream side, and it is vaporized into steam under vacuum conditions, it crosses film steam and enters condenser under vacuum pumping, vacuum degree is
2000Pa, condensation temperature are -20 DEG C, and the epoxychloropropane aqueous solution of higher concentration is formed after condensation（Product）It is stored up into crude product
Tank.Being trapped in film upstream side did not had the liquid of film by entering seepage remaining liquid storage tank after heat exchanger and raw material heat exchange cooling.Through film
After processing, a concentration of the 35% of epoxychloropropane in crude product tank；The content of epoxychloropropane is less than 0.05% and enters in seepage remaining liquid
Waste water post-processes.It crosses film liquid to be further layered by phase separator, lower layer is gas producing formation, and the epoxy of concentration >=96.5% can be obtained
Chloropropane product can be waste water layer directly as production raw material, upper strata aqueous phase, be 6 %（w%）Saturation epoxychloropropane water
Solution, waste water solution return to raw material liquid storage tank and enter multi-cycle separation next time.
Embodiment 4
Using above-mentioned apparatus, wherein the preferential organic matter film component thoroughly is tubular type, wherein film be containing including active layer,
The sandwich diaphragm of intermediate layer and supporting layer, wherein active layer material are poly- caprylil methicone（POMS）, active layer
Thickness is 3 μm, and intermediate layer material is Styrene-Butadiene-Styrene Block Copolymer（SBS）, supporting layer membrane aperture is
200 nm, raw material liquid storage tank Central Plains feed liquid are containing 3.7%（w%）Epoxychloropropane aqueous solution passes through the conveying that gauge pressure is 0.1 Mpa
Pump enters preheater, is preheating to the upstream side for entering film in the preferential separation unit of organic matter film thoroughly after 40 DEG C in liquid form.Film
Downstream side using vacuumize plus condensation by the way of film upstream and downstream formed component vapor partial pressure it is poor, the epoxy chlorine in raw material
Propane is crossed after film to film downstream side, and is vaporized into steam under vacuum conditions, is crossed film steam and is entered condensation under vacuum pumping
Device, vacuum degree 5000Pa, condensation temperature are -40 DEG C, and the epoxychloropropane aqueous solution that higher concentration is formed after condensation enters slightly
Product storage tank.Being trapped in film upstream side did not had the liquid of film to be stored up by entering seepage remaining liquid after heat exchanger and raw material heat exchange cooling
Tank.After film process, a concentration of the 39.8% of epoxychloropropane in crude product tank；The content of epoxychloropropane is in seepage remaining liquid
0.1%, which enters waste water, post-processes.Film liquid is crossed further to be layered by phase separator, lower layer is gas producing formation, can be obtained at concentrations up to
96.5% epoxychloropropane product can be waste water layer directly as production raw material, upper strata aqueous phase, be 6 %（w%）Saturated rings
Oxygen chloropropane aqueous solution, waste water solution return to raw material liquid storage tank and enter multi-cycle separation next time.
Embodiment 5
Using above-mentioned apparatus, wherein the preferential organic matter film component thoroughly is tubular type, wherein film be containing including active layer,
The sandwich diaphragm of intermediate layer and supporting layer, wherein active layer material are poly- caprylil methicone（POMS）, active layer
Thickness is 7 μm, and intermediate layer material is soluble intrinsic microporous polymer（PIM-1）, supporting layer membrane aperture is 80 nm, former
Material liquid is containing 4.48% in feed liquid storage tank（w%）Epoxychloropropane aqueous solution is entered pre- by the delivery pump that gauge pressure is 0.2 Mpa
Hot device is preheating to the upstream side for entering film in the preferential separation unit of organic matter film thoroughly after 25 DEG C in liquid form.The downstream side of film
The vapor partial pressure for forming component in the upstream and downstream of film by the way of vacuumizing plus condensing is poor, and the epoxychloropropane in raw material crosses film
Afterwards to film downstream side, and it is vaporized into steam under vacuum conditions, crosses film steam and enter condenser, vacuum degree under vacuum pumping
For 9000Pa, condensation temperature is -50 DEG C, and the epoxychloropropane aqueous solution that higher concentration is formed after condensation enters crude product storage tank.
Being trapped in film upstream side did not had the liquid of film by entering seepage remaining liquid storage tank after heat exchanger and raw material heat exchange cooling.Through film process
Afterwards, in crude product tank epoxychloropropane a concentration of 61%（w%）；The content of epoxychloropropane enters waste water for 0.2% in seepage remaining liquid
Post-processing.It crosses film liquid to be further layered by phase separator, lower layer is gas producing formation, and the epoxy chlorine at concentrations up to 96.5% can be obtained
Bromopropane product can be waste water layer directly as production raw material, upper strata aqueous phase, be 6 %（w%）Saturation epoxychloropropane it is water-soluble
Liquid, waste water solution return to raw material liquid storage tank and enter multi-cycle separation next time.
Embodiment 6
Using above-mentioned apparatus, wherein the preferential organic matter film component thoroughly is tubular type, wherein film be containing including active layer,
The sandwich diaphragm of intermediate layer and supporting layer, wherein active layer material are poly- caprylil methicone（POMS）, active layer
Thickness is 2 μm, and intermediate layer material is Styrene-Butadiene-Styrene Block Copolymer（SBS）It is polymer-modified, branch
It is 30 nm to support tunic aperture, and raw material liquid storage tank Central Plains feed liquid is containing 0.3%（w%）Methyl-n-amyl ketone aqueous solution, passes through gauge pressure
Enter preheater for 0.15 Mpa delivery pumps, is preheating to after 25 DEG C and enters in liquid form in the preferential separation unit of organic matter film thoroughly
The upstream side of film.The vapor partial pressure that the downstream side of film forms component by the way of vacuumizing plus condensing in the upstream and downstream of film is poor,
Methyl-n-amyl ketone in raw material is crossed after film to film downstream side, and is vaporized into steam under vacuum conditions, crosses film steam true
Enter condenser, vacuum degree 1000Pa under empty pumping, condensation temperature is -50 DEG C, and the methyl of higher concentration is formed after condensation
N-pentyl ketone aqueous solution enters crude product storage tank.Being trapped in film upstream side did not had the liquid of film to be changed by heat exchanger and raw material
Enter seepage remaining liquid storage tank after heat drop temperature.After film process, a concentration of the 1% ~ 30% of methyl-n-amyl ketone in crude product tank（w%）；
The content of methyl-n-amyl ketone enters waste water less than 0.05% and post-processes in seepage remaining liquid.It crosses film liquid and further passes through phase separator
Layering, upper layer is gas producing formation, and the methyl-n-amyl ketone product at concentrations up to 98.7% can be obtained, can be directly as production original
Material, lower layer's water phase are waste water layer, are 0.5 %（w%）Saturation methyl-n-amyl ketone aqueous solution, waste water solution return material liquid
Storage tank enters multi-cycle separation next time.
Claims (10)
1. a kind of device recycling organic solvent from low-concentration organic waste water, which is characterized in that including raw material liquid storage tank, preferentially
Saturating organic matter film separation unit, condenser and phase separator,
The penetrating fluid outlet of the preferential separation unit of organic matter film thoroughly connects the condenser inlet, and the condensator outlet connects
The phase separator is connect,
The water layer taphole of the phase separator connects the raw material liquid storage tank.
2. the apparatus according to claim 1, which is characterized in that described device further includes seepage remaining liquid storage tank, heat exchanger, preheating
Device and vacuum pump set, the vacuum pump set connect the penetrating fluid that the preferential organic matter film thoroughly detaches unit by the condenser
The seepage remaining liquid outlet of outlet, the preferential separation unit of organic matter film thoroughly connects the seepage remaining liquid storage tank by the heat exchanger,
The raw material liquid storage tank passes sequentially through the heat exchanger and connects the preferential separation unit of organic matter film thoroughly with the preheater
Entrance, the raw material liquid storage tank are provided with delivery pump between detaching unit with the preferential saturating organic matter film.
3. the apparatus according to claim 1, which is characterized in that be provided between the condenser and the phase separator thick
Product storage tank.
4. according to any device of claim 1 ~ 3, which is characterized in that the preferential organic matter film thoroughly detaches unit and includes
N number of preferential organic matter film component thoroughly, N is the integer more than or equal to 1, N number of preferential series connection of organic matter film separating film module thoroughly,
Hybrid connections in parallel in parallel or series.
5. device according to claim 4, which is characterized in that the preferential organic matter film component thoroughly be tubular type, rolling or
Hollow fiber membrane format.
6. according to any device of claim 1 ~ 3, which is characterized in that the film in the preferential organic matter film component thoroughly is
At least composite membrane of two membranes, the composite membrane include active layer and supporting layer.
7. device according to claim 6, which is characterized in that the active layer is preferential through ester, alkane, ether or ketone
Fine and close functional membrane.
8. device according to claim 7, which is characterized in that the material of the active layer be poly- caprylil methicone,
Dimethyl silicone polymer or previous materials it is one or more of polymer-modified.
9. device according to claim 6, which is characterized in that the active layer thickness is 1 ~ 10 μm；The supporting layer is
Inorganic porous membrane, membrane aperture are 30 ~ 800 nm.
10. device according to claim 6, which is characterized in that the film in the preferential organic matter film component thoroughly further includes
Intermediate layer between the active layer and supporting layer；Preferred intermediate layer material is s-B-S
Block copolymer, polyetherimide, Kynoar, soluble intrinsic microporous polymer or previous materials it is polymer-modified in
One or more.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857340A (en) * | 2017-12-25 | 2018-03-30 | 南京九思高科技有限公司 | A kind of apparatus and method that organic solvent is reclaimed from low-concentration organic waste water |
| CN112076627A (en) * | 2020-09-15 | 2020-12-15 | 江苏扬农化工集团有限公司 | Method for applying reverse osmosis membrane and permeable membrane to separation of epoxy chloropropane |
-
2017
- 2017-12-25 CN CN201721834240.7U patent/CN207760093U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107857340A (en) * | 2017-12-25 | 2018-03-30 | 南京九思高科技有限公司 | A kind of apparatus and method that organic solvent is reclaimed from low-concentration organic waste water |
| CN112076627A (en) * | 2020-09-15 | 2020-12-15 | 江苏扬农化工集团有限公司 | Method for applying reverse osmosis membrane and permeable membrane to separation of epoxy chloropropane |
| CN112076627B (en) * | 2020-09-15 | 2022-08-19 | 江苏扬农化工集团有限公司 | Method for applying reverse osmosis membrane and permeable membrane to separation of epoxy chloropropane |
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