CN203862140U - Recovery and pre-treatment device for DMAC waste liquid - Google Patents
Recovery and pre-treatment device for DMAC waste liquid Download PDFInfo
- Publication number
- CN203862140U CN203862140U CN201420205082.9U CN201420205082U CN203862140U CN 203862140 U CN203862140 U CN 203862140U CN 201420205082 U CN201420205082 U CN 201420205082U CN 203862140 U CN203862140 U CN 203862140U
- Authority
- CN
- China
- Prior art keywords
- dmac
- waste liquid
- recovery
- water
- pretreatment unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 27
- 239000002699 waste material Substances 0.000 title claims abstract description 18
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 title claims abstract 9
- 238000011084 recovery Methods 0.000 title abstract description 14
- 238000002203 pretreatment Methods 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000012510 hollow fiber Substances 0.000 claims abstract description 3
- 239000012528 membrane Substances 0.000 claims description 9
- 241001474374 Blennius Species 0.000 claims description 5
- 238000001471 micro-filtration Methods 0.000 claims description 5
- 102000010637 Aquaporins Human genes 0.000 claims description 2
- 108010063290 Aquaporins Proteins 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 6
- 238000004821 distillation Methods 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000005276 aerator Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000001914 filtration Methods 0.000 description 9
- 230000004907 flux Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000005273 aeration Methods 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 235000012489 doughnuts Nutrition 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000007701 flash-distillation Methods 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical compound CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a recovery and pre-treatment device for DMAC waste liquid. The recovery and pre-treatment device comprises a water trough, wherein a plurality of fixed discs are mounted at the bottom of the water trough in parallel; film bundles are movably connected with the fixed discs; the other ends of the film bundles are sealed and are in a free state; alga-type film bundles are formed; the fixed discs are connected through water collecting pipes, and then connected with a transit trough outside the water trough through a water generating pipeline; a suction pump is arranged on the water generating pipeline; an aerator pipeline is arranged below fixed discs, and is connected with a blower arranged outside the water trough. DMAC recycle liquid is subjected to pre-treatment by the recovery and pre-treatment device, and is subjected to precise distillation; the distillate is recycled by DMAC; the residue is recycled by high-viscosity solid (heavy components) added with additives and resin; the proportion of the heavy components can be reduced, and the stability of the heavy components of the performance of hollow fiber film during recycling and secondary utilization process is ensured.
Description
Technical field
The utility model relates to a kind of DMAC waste liquid recovery apparatus, especially for the pretreatment unit reclaiming for DMAC waste liquid.
Background technology
Dimethylacetylamide (DMAC); molecular formula CH3CON (CH3) 2; for higher boiling (boiling point is 165.5 DEG C) polar solvent; be commonly used for solvent and catalyst; in hollow-fibre membrane production process, produce a large amount of waste water containing DMAC; enter in water body and can cause very large impact to water quality environment; harm people's health, thus carry out the recovery of DMAC waste liquid in hollow-fibre membrane production and process research for the aspect such as production cost of carrying out environmental protection and lowering enterprise all tool have very important significance.
For DMAC waste liquid, generally adopt conventional secondary rectificating method, because the boiling point of DMAC is higher than water, in the time adopting distillating method to reclaim, need to evaporate a large amount of water, because the thermal capacitance of water is large, therefore there is with the way of distillation processing problem that energy consumption is large.Take in addition the method for solvent extraction+flash distillation, can selectively from waste water, extract DMAC with solvent extraction, then make extractant recycling use by the method for flash distillation, this not only processes waste water, and has reclaimed DMAC, and energy consumption is not high yet.Condition restriction, when current DMAC liquid waste concentration 10-30%, producer is the processes that adopt secondary rectifying still more.
Under the definite prerequisite of recovery process, DMAC waste liquid is carried out to rational pretreatment, be conducive to alleviate follow-up distillation burden, and the classified use of each component.Owing to reclaiming, liquid DMAC concentration is higher, and additive and resin also have to a certain degree stripping, causes recovery liquid to have certain turbidity, and the filter core of the certain precision of the more employing of pretreatment, has problems more at present, and on the one hand, filtering accuracy reaches after requirement.But the recovery liquid blocking filter of certain turbidity, need frequently change, and on the other hand, filtering accuracy is inadequate, only can reach removal large particulate matter.Use at present membrane filtration pretreatment DMAC waste liquid technique little.
The defect existing for prior art, proposes the utility model.
Utility model content
In order to overcome, prior art doughnut film production line DMAC recovery liquid turbidity is higher, the cotton filter core dirt of pretreatment PP is blocked up problem and the membrane filtration DMAC recovery liquid that problem is frequently changed, other filter precision is less and polluted too fast problem, the problem of more difficult cleaning after also having in addition film to pollute, the utility model provides a kind of and reclaims liquid Distillation recovery pretreatment unit before treatment for DMAC.
The technical scheme that the utility model provides is: a kind of DMAC waste liquid reclaims pretreatment unit, include tank, bottom of gullet is provided with some fixed disks side by side, and on fixed disk, loose joint has film bundle, the other end of film bundle seals and in free state, is configured as seaweed type film bundle; After each fixed disk connects by collector pipe, by the transfer tank outside water producing pipe road connection water channel, water producing pipe is provided with suction pump on road; The below of fixed disk is provided with aerated conduit, and aerated conduit is connected with the air blast being arranged on outside tank.
Described film bundle is hollow fiber microfiltration membrane bundle or milipore filter bundle.
Described sink top adds lid.
Described tank is arranged on a movable trolley.
Described transfer tank is arranged on a movable trolley.
The beneficial effects of the utility model are:
DMAC reclaims liquid after pretreatment of the present utility model, again by after rectifying, cut reclaims with DMAC, residue reclaims with additive and resin high viscosity solid (heavy constituent), can reduce heavy constituent proportion, ensure heavy constituent reclaim secondary utilize process in doughnut film properties stable.
(1) device is simple, safeguards easily, adopts cart type respectively to reclaim tank with production line and moves and determine operation, is convenient to streamline management.
(2) hollow-fibre membrane can be gathered materials on the spot, and hollow-fibre membrane production process produces DMAC waste liquid, still uses film pretreatment.
(3) filtering accuracy of film is high, the usable floor area of the visual Location of requirement film of the water yield.
(4) cleaning reagent is special, the flux of quick-recovery film soon, and effective more a lot of than other reagent (hydrogen peroxide, NaOH, oxalic acid), the mechanical water backwash water yield is large again.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model, with reference to accompanying drawing 1, pretreatment filtering device of the present utility model can be made cart type, moves with the each tank of production line, filter pretreatment, after filtering, solution transfer tank 6 is directly delivered to distillation and rectifying exhausting line after collecting.
Device of the present utility model adopts similar immersion ultrafiltration apparatus, add a cover on tank 5 tops, while avoiding filtering, aeration causes the volatilization of DMAC, suction pump 3 is fixed on tank 5 one sides, tank 5 bottoms are provided with aerated conduit and are connected with external blower 4, and there is a film bundle fixed disk, film Shu Yiduan sealing, other end water outlet is fixed on fixed disk by loose joint, forms seaweed type film bundle, can dismantle at any time, each fixed disk is by the pipeline connection that catchments, and by the external suction pump 3 in water producing pipe road, by the suction of suction pump 3, after film bundle 2 filters, solution is collected in transfer tank 6.
Adopt doughnut micro-filtration or milipore filter, effluent flux is set in 10-15LMH, moves and within 4-8 minute, stops 1 minute, and filter process concentrates speed, carries out continuous aeration, and aeration intensity is not less than 30m3/m2.h, depending on filtration yield and efficiency, increases membrane area.
Seaweed type film bundle, is convenient to dismounting and cleans, and required cleaning solution amount is few, can operate according to film ruuning situation.After film operation certain hour, pollute and increase the weight of gradually, pressure rising (flux reduction), do not reach while filtering water yield requirement, disassembling direct use 2500-6000ppm clorox+0.1-0.5% softex kw (CTAB) compositional liquor by film bundle soaks, soak time is not less than 0.5h, and flux can recover substantially completely.
Cleaning reagent uses certain hour, supplements new liquid depending on film recovery situation and change in concentration.
Case study on implementation:
Micro-filtration membrane (PVDF) production line, 1 production line reclaims DMAC waste liquid 0.4t, darg 8h for 1 day.
Adopt external diameter 1.6mm micro-filtration membrane, the long 1.2m of seaweed type film Shu Youxiao, 225 of single bundles, amount to 12 and restraint, and operating flux 12LMH can meet the pre-filtering demand of 4 production line DMAC waste liquids simultaneously.
After operation 6h, clean contrast continuously, before and after cleaning, under 5kPa negative pressure, measure respectively flux with clear water:
The explanation of above example is just for helping to understand core concept of the present utility model; , for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model meanwhile.
Claims (5)
1. DMAC waste liquid reclaims a pretreatment unit, it is characterized in that, include tank, bottom of gullet is provided with some fixed disks side by side, and on fixed disk, loose joint has film bundle, and the other end of film bundle seals and in free state, is configured as seaweed type film bundle; After each fixed disk connects by collector pipe, by the transfer tank outside water producing pipe road connection water channel, water producing pipe is provided with suction pump on road; The below of fixed disk is provided with aerated conduit, and aerated conduit is connected with the air blast being arranged on outside tank.
2. a kind of DMAC waste liquid according to claim 1 reclaims pretreatment unit, it is characterized in that, described film bundle is hollow fiber microfiltration membrane bundle or milipore filter bundle.
3. a kind of DMAC waste liquid according to claim 1 reclaims pretreatment unit, it is characterized in that, described sink top adds lid.
4. a kind of DMAC waste liquid according to claim 1 reclaims pretreatment unit, it is characterized in that, described tank is arranged on a movable trolley.
5. a kind of DMAC waste liquid according to claim 1 reclaims pretreatment unit, it is characterized in that, described transfer tank is arranged on a movable trolley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205082.9U CN203862140U (en) | 2014-04-24 | 2014-04-24 | Recovery and pre-treatment device for DMAC waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205082.9U CN203862140U (en) | 2014-04-24 | 2014-04-24 | Recovery and pre-treatment device for DMAC waste liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203862140U true CN203862140U (en) | 2014-10-08 |
Family
ID=51643131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205082.9U Expired - Lifetime CN203862140U (en) | 2014-04-24 | 2014-04-24 | Recovery and pre-treatment device for DMAC waste liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203862140U (en) |
-
2014
- 2014-04-24 CN CN201420205082.9U patent/CN203862140U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160627 Address after: 300180 Tianjin city Baodi Plastic Industrial Zone No. 10 Fulilu Patentee after: TIANJIN BISHUIYUAN MEMBRANE MATERIAL Co.,Ltd. Address before: 101407 Beijing city Huairou District Yanqi Economic Development Zone Park south two Street No. 4 Patentee before: BEIJING ORIGIN WATER FILM TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 300180 No. 10, Fuli Road, Baodi plastic products industrial zone, Tianjin Patentee after: Oseco membrane technology (Tianjin) Co.,Ltd. Address before: 300180 No. 10, Fuli Road, Baodi plastic products industrial zone, Tianjin Patentee before: TIANJIN BISHUIYUAN MEMBRANE MATERIAL Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |