CN107020064A - A kind of new packing reclaimed for water-soluble solvent - Google Patents
A kind of new packing reclaimed for water-soluble solvent Download PDFInfo
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- CN107020064A CN107020064A CN201710376143.6A CN201710376143A CN107020064A CN 107020064 A CN107020064 A CN 107020064A CN 201710376143 A CN201710376143 A CN 201710376143A CN 107020064 A CN107020064 A CN 107020064A
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- Prior art keywords
- water
- reclaimed
- new packing
- soluble solvent
- filler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/304—Composition or microstructure of the elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/304—Composition or microstructure of the elements
- B01J2219/30408—Metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/30—Details relating to random packing elements
- B01J2219/304—Composition or microstructure of the elements
- B01J2219/30416—Ceramic
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present invention relates to discarded recycling field, disclose a kind of new packing reclaimed for water-soluble solvent, the present invention relates to a kind of new packing, the filler has functional hydrophilic surface, gas-liquid runner can built simultaneously, realize abundant wetting and liquid fully the sprawling on filler surface on filler surface.This has the filler on functional hydrophilic surface, with packing pressure drop is small, efficiency high the characteristics of, water-soluble solvent removal process can be used for as core component, the tower that lithium ion battery production exhaust-gas treatment and NMP are reclaimed is particularly suitable for use in.
Description
Technical field
The present invention relates to discarded recycling field, more particularly to a kind of new packing reclaimed for water-soluble solvent.
Background technology
1-METHYLPYRROLIDONE (NMP) can dissolve each other with water, alcohol, ether, ester, ketone, halogenated hydrocarbons, aromatic hydrocarbons, with boiling point height, dissolving
Power is strong, it is nonflammable the features such as, be a kind of polar solvent with good selectivity and superior stability.In lithium ion battery production
In, NMP is used as the solvent of anode sizing agent (nickle cobalt lithium manganate, conductive black, solvent NMP, binding agent PVDF mixture).
Positive pole is coated on after substrate surface, it is necessary to by the removing NMP organic solvents such as drying and baking, can now produce substantial amounts of NMP
Waste gas.In recent years, with the fast development of removable equipment, supporting lithium battery industry is greatly developed, the row of NMP waste gas
High-volume also greatly increase.
With the enhancing of the severe situation and social environment consciousness of domestic atmosphere pollution, relevant industries and place are to big
VOC pollutant concentration in gas, which is proposed, to be distinctly claimed.Wherein exist《(the examination of battery industry cleaner production apprasement index system
OK)》In, exhaust emission index NMP a reference value is 1.5mg/m3；《Battery industry pollutant emission standard》Then define
NMP waste gas in a organized way concentration of emission limit value be 50mg/m3.In the case, the tail gas recycle of battery industry is looked forward to as battery
Industry realizes the key point of greenization production.
Domestic NMP waste gas recovery technologies mainly have two kinds, respectively sieve method and zeolite concentration rotating wheel method at present.Its
The NMP waste gas that drying equipment comes directly is cooled to less than 10 DEG C by middle sieve method, and recovery section NMP lime sets, tail gas passes through again
Molecular sieve absorbs.The advantage is that disposable apparatus investment cost is low, but there is also energy consumption is big, in tail gas NMP contents it is high (>
50ppm), the shortcomings of noise is big, maintenance cost is high.Zeolite concentration rotating wheel rule, as adsorbent, is passed through using hydrophobic zeolite
The methods such as temp.-changing adsorption-desorption, are condensed into the waste gas containing NMP of large-wind-volume low-concentration the gas of small air quantity high concentration.It has
Energy consumption is low (coating machine heating energy consumption declines about 40% or so), and the NMP rate of recovery in waste gas is high (95% or so), after processing
NMP contents can be controlled the features such as below 50PPM in gas.But also have that equipment one-time investment is big, running device is multiple simultaneously
The distinct disadvantage such as miscellaneous, maintenance of equipment expense height and operating power consumption height.
NMP waste gas, but high tower pressure drop and uneven wetting contact surface can effectively be handled using tower, limited
Nearly atmospheric industrial exhaust-gas treatment.
The content of the invention
The present invention provides a kind of new packing reclaimed for water-soluble solvent, solve high tower pressure drop in the prior art and
Uneven wetting contact surface, limits the technical problem of nearly atmospheric industrial exhaust-gas treatment
The purpose of the present invention is achieved through the following technical solutions：
A kind of new packing reclaimed for water-soluble solvent, with hydrophilic surface, the composition of the hydrophilic surface
Composition is the hydrophilic radical with anion surfactant, the hydrophilic radical of cationic surfactant, by oxy radical group
Into nonionic surfactant hydrophilic radical in one or more groups compound.
Beneficial effect：
The invention discloses a kind of new packing reclaimed for water-soluble solvent, by with functional hydrophilic surface
New packing, it is possible to use hydrophilic surface is realized liquid phase in the abundant infiltration on filler surface and sprawled, in identical liquid measure situation
Under, it is possible to achieve liquid phase is uniformly distributed filler surface, effectively the thickness of reduction filler surface liquid phase layer, so as to realize
Following beneficial effect：
(1) liquid is avoided in the localized clusters of packing layer, it is to avoid the problems such as bias current and channel；
(2) circulation passage of gas phase is increased, packing pressure drop is reduced；
(3) reduce and avoid filler and do superficial phenomenon, increase gas-liquid and be in contact the effective surface area on middle liquid phase surface,
So as to improve the efficiency of filler.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, with reference to embodiment
The present invention is further detailed explanation.
Embodiment 1
The embodiments of the invention provide a kind of new packing reclaimed for water-soluble solvent, with hydrophilic surface, institute
State the constituent of hydrophilic surface for the hydrophilic radical with anion surfactant, cationic surfactant it is hydrophilic
The compound of one or more groups in group, the hydrophilic radical for the nonionic surfactant being made up of oxy radical.
Wherein, water-wetted surface can be obtained by the adjustment of constituent, can also be by the tune of surface microscopic topographic
It is whole to obtain, it can also be obtained by the common adjustment of surface constituent and surface microscopic topographic.
The hydrophilic radical of anion surfactant includes carboxylic acid group, sulfonic group, sulfate and phosphate, the cation
The hydrophilic radical of surfactant includes amino, quaternary ammonium group, the nonionic surfactant of oxy radical composition it is hydrophilic
Group ether, hydroxyl, aldehyde radical, carbonyl, block polyether.
The microscopic appearance of the new packing can be the build-up of particles pattern with microchannel, also can be also to have not advise
Then the gully formula pattern of projection, can also be the poroid pattern of capillary with tubular structure.
The basal body structure form of the new packing can be the random packings such as Raschig ring, Pall ring, θ rings, or
The structured packing of packing or structured packing.
The local appearance shape of the new packing can be smooth flat or curved surface, it is possible to have by irregular surface
The labyrinth face shaping of composition.
The material of the new packing can be pure metal and alloy, metal oxide, silicate, ceramics, You Jigao
Molecular material, or the mixture or compound of above-mentioned material.
The constituent of the water-wetted surface, can be single pure compound or with multi-component mixing
Thing
When the water-wetted surface is different from filler matrix constituent, the water-wetted surface material can directly and matrix
Surface is combined, and can also be handled by the surface to filler, can also mutually be tied with matrix surface via intermediate layer
Close.
The invention discloses a kind of new packing reclaimed for water-soluble solvent, by with functional hydrophilic surface
New packing, it is possible to use hydrophilic surface is realized liquid phase in the abundant infiltration on filler surface and sprawled, in identical liquid measure situation
Under, it is possible to achieve liquid phase is uniformly distributed filler surface, effectively the thickness of reduction filler surface liquid phase layer, so as to realize
Following beneficial effect：
(1) liquid is avoided in the localized clusters of packing layer, it is to avoid the problems such as bias current and channel；
(2) circulation passage of gas phase is increased, packing pressure drop is reduced；
(3) reduce and avoid filler and do superficial phenomenon, increase gas-liquid and be in contact the effective surface area on middle liquid phase surface,
So as to improve the efficiency of filler.
Embodiment 2
Using 304 stainless steel plate θ ring fillers as matrix, using dip coating and high-temperature sintering process, prepared on filler surface
One layer of aluminium oxide surface layer, detailed process is as follows：304 stainless steel plate θ ring fillers are impregnated in into alumina slurry, and (5 μm average
Particle diameter, 10% mass concentration) in, take out and dry after hanging, then in 800 DEG C~1300 DEG C sintering sizings, obtaining surface has
The filler of build-up of particles pattern hydrophilic layer.
The filler is used as NMP waste gas absorption fillers, and in the case of identical gas velocity and flow quantity, pressure drop is essentially identical, but fills out
The efficiency of material improves more than 10%.
Embodiment 3
Using ceramic honey comb structured packing as matrix, using sulfonation method, hydrophilically modified, detailed process is carried out to filler surface
It is as follows：Ceramic honey comb structured packing is impregnated in 30% sulfuric acid solution, boiling is warming up to, 3h is kept, is then naturally cooling to
Room temperature, takes out filler and is eluted with pure water to neutrality, dry, obtain the ceramic honey comb with sulfonic acid hydrophilic radical modified surface layer
Structured packing.
The filler is used as NMP waste gas absorption fillers, in the case of identical gas velocity and flow quantity, and pressure drop declines more than 5%, fills out
The efficiency of material improves more than 15%.
Embodiment 4
Using 316 stainless steel cloth fillers as matrix, using etch method, processing, detailed process are eroded to filler surface
It is as follows：316 stainless steel cloth fillers are impregnated in 5% oxalic acid solution, 65 DEG C~80 DEG C are warming up to, 0.2~0.5h is kept, treats
After the smooth stainless steel surfaces of filler disappear, take out filler and eluted with pure water to neutrality, drying, obtained with cellular pitting
The stainless steel cloth filler of water-wetted surface.
The filler is used as NMP waste gas absorption fillers, in the case of identical gas velocity and flow quantity, and pressure drop declines more than 20%,
The efficiency of filler improves more than 20%.
The present invention is described in detail above, principle and embodiment party of the specific case used herein to the present invention
Formula is set forth, and the explanation of above example is only intended to the method and its core concept for helping to understand the present invention；Meanwhile, it is right
In those of ordinary skill in the art, according to the thought of the present invention, change is had in specific embodiments and applications
Part, in summary, this specification content should not be construed as limiting the invention.
Claims (8)
1. a kind of new packing reclaimed for water-soluble solvent, it is characterised in that with hydrophilic surface, the hydrophily table
The constituent in face be the hydrophilic radical with anion surfactant, the hydrophilic radical of cationic surfactant, by containing
The compound of one or more groups in the hydrophilic radical of the nonionic surfactant of oxygen groups composition.
2. the new packing according to claim 1 reclaimed for water-soluble solvent, it is characterised in that anionic surface is lived
Property agent hydrophilic radical include carboxylic acid group, sulfonic group, sulfate and phosphate, the hydrophilic radical of the cationic surfactant
Including amino, quaternary ammonium group, hydrophilic radical ether, hydroxyl, the aldehyde radical of the nonionic surfactant of the oxy radical composition, carbonyl
Base, block polyether.
3. the new packing according to claim 1 reclaimed for water-soluble solvent, it is characterised in that the new packing
Microscopic appearance can be the build-up of particles pattern with microchannel, also can be also the gully formula pattern with irregular projection,
It can also be the poroid pattern of capillary with tubular structure.
4. the new packing according to claim 1 reclaimed for water-soluble solvent, it is characterised in that the new packing
Basal body structure form can be the random packing such as Raschig ring, Pall ring, θ rings, or the structured packing of packing is regular
Filler.
5. the new packing according to claim 1 reclaimed for water-soluble solvent, it is characterised in that the new packing
Local appearance shape can be smooth flat or curved surface, it is possible to have the labyrinth outward appearance shape being made up of irregular surface
Shape.
6. the new packing according to claim 1 reclaimed for water-soluble solvent, it is characterised in that the new packing
Material can be pure metal and alloy, metal oxide, silicate, ceramics, high-molecular organic material, or it is above-mentioned
The mixture or compound of material.
7. the new packing according to claim 1 reclaimed for water-soluble solvent, it is characterised in that the water-wetted surface
Constituent, can be single pure compound or with multi-component mixture.
8. the new packing according to claim 1 reclaimed for water-soluble solvent, it is characterised in that when the hydrophilic table
When face is different from filler matrix constituent, the water-wetted surface material directly can be combined with matrix surface, can also be led to
Cross and the surface of filler is handled, can also be combined via intermediate layer with matrix surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710376143.6A CN107020064A (en) | 2017-05-25 | 2017-05-25 | A kind of new packing reclaimed for water-soluble solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710376143.6A CN107020064A (en) | 2017-05-25 | 2017-05-25 | A kind of new packing reclaimed for water-soluble solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107020064A true CN107020064A (en) | 2017-08-08 |
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ID=59529412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710376143.6A Pending CN107020064A (en) | 2017-05-25 | 2017-05-25 | A kind of new packing reclaimed for water-soluble solvent |
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| Country | Link |
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| CN (1) | CN107020064A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426257A (en) * | 2021-06-08 | 2021-09-24 | 威海金宏科技有限公司 | Wastewater recovery process and system based on low-grade heat source |
| CN113440985A (en) * | 2021-06-08 | 2021-09-28 | 威海金宏科技有限公司 | Multi-effect heat exchange wastewater recovery process and system for humidification-dehumidification tower |
| CN113975843A (en) * | 2021-08-17 | 2022-01-28 | 中国科学院过程工程研究所 | Combined regular packing with hydrophilicity |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62286502A (en) * | 1986-06-04 | 1987-12-12 | Mitsubishi Plastics Ind Ltd | Plastic packing plate |
| US20050164009A1 (en) * | 2004-01-22 | 2005-07-28 | Rieke Peter C. | Polymer surface with increased hydrophilicity and method of making |
| CN103723818A (en) * | 2013-12-10 | 2014-04-16 | 郑州正佳能源环保科技有限公司 | Method for coating surface of water treatment material with polyacrylamide gel film |
-
2017
- 2017-05-25 CN CN201710376143.6A patent/CN107020064A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62286502A (en) * | 1986-06-04 | 1987-12-12 | Mitsubishi Plastics Ind Ltd | Plastic packing plate |
| US20050164009A1 (en) * | 2004-01-22 | 2005-07-28 | Rieke Peter C. | Polymer surface with increased hydrophilicity and method of making |
| CN103723818A (en) * | 2013-12-10 | 2014-04-16 | 郑州正佳能源环保科技有限公司 | Method for coating surface of water treatment material with polyacrylamide gel film |
Non-Patent Citations (1)
| Title |
|---|
| 中国化学装备总公司，上海工程技术大学: "《塔填料产品及技术手册》", 31 May 1995 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426257A (en) * | 2021-06-08 | 2021-09-24 | 威海金宏科技有限公司 | Wastewater recovery process and system based on low-grade heat source |
| CN113440985A (en) * | 2021-06-08 | 2021-09-28 | 威海金宏科技有限公司 | Multi-effect heat exchange wastewater recovery process and system for humidification-dehumidification tower |
| CN113975843A (en) * | 2021-08-17 | 2022-01-28 | 中国科学院过程工程研究所 | Combined regular packing with hydrophilicity |
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Application publication date: 20170808 |