A kind of function adsorbed film high for removing VOCs waste gas
Technical field
The invention belongs to protective articles field, more particularly to a kind of function adsorbed film high for removing VOCs waste gas.
Background technology
In recent years, because bad caused by suction VOCs (volatile organic compounds, volatile organic matter)
Many symptoms for causing nervous system allergy such as house syndrome are being continuously increased, and this is mainly by all kinds of coating, solvent, tree
Fat, sticker, diluent etc. distribute substantial amounts of VOCs and cause environment pollution induced, especially in the environment that the air-tightness for energy-conservation is high
In (such as dope room, top-grade furniture house), this influence is even more serious.
To solve the above problems, those skilled in the art have been developed that many waste gas adsorbed films for having and adsorbing function, such as
Chemical bond type film, physical absorption mechanism film, catalyst decompose mechanism's film etc..Included activated carbon etc. in physical absorption mechanism film
Porous plastid surface physics adsorbing mechanism film is more excellent because of its adsorption effect, adsorption rate, can corresponding VOCs compositions it is most wide and obtain
To extensive use.The method for adhering to adsorber particles such as activated carbon particles on this filter material is typically to be pressed from both sides between non-woven fabrics film
Adsorber particles are held, is then fixed on film with thermoplasticity bonding agent.
However, using the wire than larger area, strip or block brushing side more than during with thermoplasticity bonding agent immobilization
Formula.On filter material during the particle such as attachment activity charcoal, because of amount of thermoplasticity bonding agent and particle size, species for using etc. no
Together, bonding agent is often coated on activated carbon particles surface and causes that absorption property is low to be subtracted.This is primarily due to the portion of bonding agent brushing
Position covering filter material adsorbent surface and prevent its from produce removal exhaust gas constituents reaction.Particularly bonding agent is exposed to for a long time
Can gradually be dissolved when in the acidic materials in waste gas, the bonding agent of dissolving spreads and then expands to non-brushing bonding agent position and covers
Lid sorbent surface area, this causes the absorption property of the honeycomb sorbent film formed body being made to reduce waste gas windage significantly
Lower.
Therefore, the prior art is defective, need to improve.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of function adsorbed film high for removing VOCs waste gas.
The present invention is achieved in that a kind of function adsorbed film high for removing VOCs waste gas, the function absorption high
Film include active carbon fibre d type non-woven membrane and adsorber particles, the adsorber particles be held on the active carbon fibre d type without
Between spinning cloth film, and it is fixed on the active carbon fibre d type non-woven membrane by bonding agent particle;The adsorber particles
Particle diameter is 200-500 μm, and the particle diameter of the bonding agent is the 1/4-1/3 of the particle diameter of the adsorber particles.
Further, the composition of the bonding agent includes methacryl resin and PIC, the metering system tree
The mol ratio of fat and PIC is 1:0.6-0.8.
Further, the adsorber particles are zeolite.
Further, the fiber footpath of the active carbon fibre d type non-woven membrane is 8-20 μm.
Further, the fiber finer pore specific surface area of the active carbon fibre d type non-woven membrane is more than 1000m2/g。
Further, the adsorber particles are fixed on the NACF by bonding agent using the interval method of lighting
On type non-woven membrane.
Further, the shape that the adsorber particles in the function adsorbed film high are constituted with active carbon fibre d type non-woven membrane
Shape is half cellular.
The embodiment of the present invention additionally provides a kind of preparation method of function adsorbed film high described above, including following step
Suddenly:
Adsorber particles of the method by bonding agent particle by particle diameter for 200-500 μm are lighted using interval be fixed on activity
Plate and two kinds of membrane products of ripple type are made on Carbon fiber d type non-woven membrane;Wherein, the particle diameter of the bonding agent is the suction
The attached dose of 1/4-1/3 of the particle diameter of particle;
Described plate and two kinds of membrane products of ripple type are made half cellular membrane product, then by described half cellular film
Product is laminated, and obtains the function adsorbed film high.
Further, the interval method of lighting is:
Instrument is lighted using special comb light bonding agent by 5-8mm intervals on an active carbon fibre d type non-woven fabrics;
After 4-6 minutes, adsorber particles are scattered on the binding agent, stand 8-12 minutes;
Another block of active carbon fibre d type non-woven fabrics is covered, firmly rolling makes two blocks of active carbon fibre d type non-woven fabrics combine closely
Together, clamping adsorber particles in active carbon fibre d type non-woven fabrics are formed.
Further, it is described described plate and two kinds of membrane products of ripple type are made half cellular process to include:
Instrument is lighted using special comb light bonding by 4-6cm intervals on along the convex vein at the top of ripple type non-woven fabrics
Agent;
After 4-6 minutes, plate non-woven fabrics is added a cover on the real ripple type non-woven fabrics, stand 8-12 minutes, rolled i.e.
Obtain 1 piece of half cellular membrane product.
Compared with prior art, beneficial effect is the present invention:It is provided in an embodiment of the present invention for removing VOCs waste gas
Function adsorbed film high in, base material filter membrane select activated carbon fiber type non-woven membrane, NACF has more compared with activated carbon
Big adsorption capacity and the adsorption/desorption speed of Geng Gao, and the property with acid-fast alkali-proof.The adsorption capacity one of NACF
As be 1-10 times of granular activated carbon, the pore structure of NACF is present in NACF surface with cellular form, and this makes
Obtaining VOCs gas molecules can directly by micro-porous adsorption, therefore NACF has more preferable adsorption dynamics adsorption kinetics performance.Additionally,
NACF hole wall surface contains various polarity functional group, micropore is cooperatively formed powerful molecular field with hole wall, drives
Power is big, and VOCs can be attracted in hole rapidly.NACF air resistance is small, is the 1/3 of granular active carbon.Absorption
The air resistance of matter is index important during VOCs is removed, and air resistance is small to mean that the pressure loss is small, pushing away required for equipment
Power is small, and energy consumption is low.Less air resistance reduces the physical damage to adsorbate, can extend the use longevity of adsorbate
Life.The adsorption layer of NACF is thinner, and volume density is small and thermal conductivity factor is big, and avoids device accumulation of heat phenomenon, shows
Security higher.Thermoplasticity bonding agent particle diameter is reduced to the 1/4-1/3 of adsorber particles particle diameter, thermoplasticity can be avoided
Bonding agent particle coats and blocks the micropore of NACF and adsorber particles, the suction of active carbon fibre peacekeeping adsorber particles
Attached performance will not also be reduced.
Brief description of the drawings
Fig. 1 is provided in an embodiment of the present invention to be made half cellular membrane product by plate and two kinds of membrane products of ripple type
Structural representation;
Fig. 2 is the structural representation of function adsorbed film high provided in an embodiment of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The embodiment of the invention provides a kind of function adsorbed film high for removing VOCs waste gas, the function adsorbed film high
Including active carbon fibre d type non-woven membrane and adsorber particles, the adsorber particles are held on the active carbon fibre d type nonwoven
Between cloth film, and it is fixed on the active carbon fibre d type non-woven membrane by bonding agent particle;The grain of the adsorber particles
Footpath is 200-500 μm, and the particle diameter of the bonding agent is the 1/4-1/3 of the particle diameter of the adsorber particles.
The function adsorbed film high for removing VOCs waste gas that the embodiment of the invention provides, by first by adsorber particles
It is fixed on an activated carbon fiber type non-woven fabrics, then covers another activated carbon fiber type non-woven fabrics, obtaining has in work
Property carbon fiber type non-woven membrane between clamp the construction of adsorber particles, and adsorber particles thermoplasticity bonding agents is fixed
Construction.The sorbent particles select the particle size range because particle diameter is less than 200 μm then with 200-500 μm of particle size range
The problem that retentivity during clamping adsorber particles can be produced poor, non-woven membrane thickness can be then increased more than 500 μm and ventilation hinders
Power.Preferably, the particle diameter of the adsorber particles is 300-400 μm.
Thermoplasticity bonding agent particle diameter is reduced to the 1/4-1/3 of adsorber particles particle diameter, and using in above-mentioned ripple type
The interval method of lighting at the top of film can avoid thermoplasticity bonding agent particle from coating and block NACF and adsorbent grain
The micropore of son, the absorption property of active carbon fibre peacekeeping adsorber particles will not also be reduced.
In function adsorbed film high for removing VOCs waste gas provided in an embodiment of the present invention, base material filter membrane selects activated carbon
Fibrous type non-woven membrane, NACF has the adsorption/desorption speed of bigger adsorption capacity and Geng Gao compared with activated carbon, and
Property with acid-fast alkali-proof.The adsorption capacity of NACF is usually 1-10 times of granular activated carbon, NACF
Pore structure is present in NACF surface with cellular form, and this enables VOCs gas molecules directly by micro-porous adsorption, because
This NACF has more preferable adsorption dynamics adsorption kinetics performance.Additionally, NACF hole wall surface contains various polarity function
Group, makes micropore cooperatively form powerful molecular field with hole wall, and driving force is big, and VOCs can be attracted in hole rapidly.It is living
Property Carbon fibe air resistance is small, is the 1/3 of granular active carbon.The air resistance of adsorbate is finger important during VOCs is removed
Mark, air resistance is small to mean that the pressure loss is small, and the motive force required for equipment is small, and energy consumption is low.Less air resistance is reduced
To the physical damage of adsorbate, the service life of adsorbate can be extended.The adsorption layer of NACF is thinner, and volume density is small
And thermal conductivity factor is big, and device accumulation of heat phenomenon is avoided, show security higher.
Adsorbance based on NACF is big, adsorption rate fast, regeneration is easy, and desorption rate is fast, heat-resist, resistance to
It is sour, alkaline-resisting, with good electric conductivity and chemical stability, ash content be few, good moldability, easy processing is into felt, silk, cloth, paper etc.
The features such as form, and be easy to be made composite active carbon fibre, these advantages are suitable in organic waste gas treatment equipment.
For VOCs waste gas pollution control and treatments, activated carbon fiber type non-woven membrane have in itself it is above-mentioned it is excellent remove defunctionalization, it is then attached
Adsorber particles by its absorption and catalysis to VOCs, function efficacy of adsorption high just can be more realized.The present invention is implemented
Example is made every effort to NACF and is played in terms of VOVs waste gas pollution control and treatments solely by the use of NACF film as the carrier of absorption VOCs
The effect arrived.
Specifically, the composition of the bonding agent includes methacryl resin and PIC, the methacryl resin
It is 1 with the mol ratio of PIC:0.6-0.8, preferably 1:0.8.The bonding agent be with it is above-mentioned with-OH containing methyl-prop
The two-package curing type solid that the waterborne suspension and aliphatic polymeric isocyanate of olefine resin are constituted.
Specifically, the adsorber particles are zeolite, and the zeolite is hydrophobic zeolite, particle shape, the hole of the zeolite
Footpath is 0.2-1nm, Si/Al mol ratios > 20.Adhere to zeolite particles on activated carbon fiber type non-woven membrane and more optimize absorption
The absorption property of film, zeolite with Porous crystallinity aluminosilicate be essential structure unit, the micropore with homogeneous size, and
Fine pore size distribution is in very narrow regular distribution, along with there is zeolite ion-exchange performance and catalyst in addition to absorption to make
With, it is possible to achieve VOCs is separated with high accuracy Adsorption.
Specifically, the fiber footpath of the active carbon fibre d type non-woven membrane is 8-20 μm.The active carbon fibre d type nonwoven
The fiber finer pore specific surface area of cloth film is more than 1000m2/g.The average a length of 1- of the chopped fiber of the active carbon fibre d type non-woven membrane
20mm。
Specifically, the adsorber particles are fixed on the active carbon fibre d type by bonding agent using the interval method of lighting
On non-woven membrane.Adsorber particles in the function adsorbed film high are shaped as partly with what active carbon fibre d type non-woven membrane was constituted
It is cellular.
Referring to Fig. 1 and Fig. 2, the embodiment of the present invention additionally provides a kind of preparation side of function adsorbed film 5 high described above
Method, comprises the following steps:
Adsorber particles of the method by bonding agent particle 4 by particle diameter for 200-500 μm are lighted using interval (not showing in figure
Go out) it is fixed on active carbon fibre d type non-woven membrane and is made plate 2 and 1 two kinds of membrane products of ripple type;Wherein, the bonding agent
Particle diameter be the adsorber particles particle diameter 1/4-1/3;
Described plate 2 and 1 two kinds of membrane products of ripple type are made half cellular membrane product 3, then by half honeycomb
Shape membrane product is laminated, and obtains the function adsorbed film 5 high.
To realize the object of the invention, studied repeatedly through inventor and drawn, will adhere to zeolite particles activated carbon fiber type without
Spin cloth film and be made plate and ripple type, be made of methacryl resin and PIC at the top of above-mentioned ripple type film
Two-package curing type bonding agent has to be spaced the half cellular membrane product 3 that the form of lighting is combined and be made with above-mentioned plate film
Energy long-time holding structure stability during treatment VOCs waste gas, so that the function adsorbed film 5 high of the embodiment of the present invention.
In the preparation method of function adsorbed film high described above provided in an embodiment of the present invention, method is lighted using interval
Adsorber particles are fixed on active carbon fibre d type non-woven membrane, bonding agent usage amount can so be greatly decreased, and passed through
The particle size of adsorber particles and bonding agent is improved, even if bonding agent usage amount is reduced will not also cause adsorbent absorption property
Reduce, the embodiment of the present invention can efficiently play the performance of the function adsorbed film high by reducing bonding agent usage amount.
Additionally, the function adsorbed film high is made into the half cellular of stratiform, this with it is complete it is cellular compared with its pass through often
The air-flow of individual passage halves, and correspondence air-flow stress is also reduced, in the case where bonding agent intensity is the same, at the top of ripple type film
Using thermoplasticity bonding agent interval light method combined with plate film be made half cellular bonding agent usage amount can be significantly
Degree is less.Using half formed honeycomb structure, the shunt volume that waste gas passes through is increased, disperse and reduce air-flow stress so that half
Formed honeycomb structure more can for a long time maintain shape than integral honeycomb shape formed body, be stable into body integrated model uniformity, real
Existing sustainable removal VOCs effects.
It is described interval the method for lighting be:
Instrument is lighted using special comb light bonding agent by 5-8mm intervals on an active carbon fibre d type non-woven fabrics;
After 4-6 minutes, adsorber particles are scattered on the binding agent, stand 8-12 minutes;
Another block of active carbon fibre d type non-woven fabrics is covered, firmly rolling makes two blocks of active carbon fibre d type non-woven fabrics combine closely
Together, clamping adsorber particles in active carbon fibre d type non-woven fabrics are formed.
The interval method of lighting is specially:
By 1:0.8 mole of ratio mixing mediation methacryl resin and PIC is made two-package curing type bonding
Agent, at the uniform velocity slowly stirs 20 minutes;
Instrument is lighted on the clean active carbon fibre d type non-woven fabrics of removing surface using special comb to determine by required interval
Amount is implemented bonding agent and is lighted;
Bonding agent lighted and uniformly scattered on the active carbon fibre d type non-woven fabrics that bonding agent is lighted is implemented after finishing 4-6 minutes
Adsorber particles, stand 8-12 minutes;
Lift the active carbon fibre d type non-woven fabrics for scattering adsorber particles, it is not had the adsorbent grain of glued dose of bonding
Son falls naturally;
Another block of active carbon fibre d type non-woven fabrics is covered afterwards, and slightly firmly rolling makes 2 pieces of active carbon fibre d type non-woven fabrics tight
It is close to be combined together, complete clamping adsorber particles in active carbon fibre d type non-woven fabrics.
It is described described plate and two kinds of membrane products of ripple type are made half cellular process to include:
Instrument is lighted using special comb light bonding by 4-6cm intervals on along the convex vein at the top of ripple type non-woven fabrics
Agent;
After 4-6 minutes, plate non-woven fabrics is added a cover on the real ripple type non-woven fabrics, stand 8-12 minutes, rolled i.e.
Obtain 1 piece of half cellular membrane product.
Specifically, it is described described plate and two kinds of membrane products of ripple type are made half cellular process to specifically include:
By 1:0.8 mole of ratio mixing mediation methacryl resin and PIC is made two-package curing type bonding
Agent, at the uniform velocity slowly stirs 20 minutes;
Instrument is lighted using special comb implement viscous by required interval is quantitative on along the convex vein at the top of ripple type non-woven fabrics
Agent is connect to light;
Bonding agent to be lighted and add a cover plate nonwoven on the ripple type non-woven fabrics that bonding agent is lighted is implemented after finishing 4-6 minutes
Cloth, stands 8-12 minutes, slightly rolls and is made 1 piece of half cellular membrane product;
Many pieces of half cellular membrane products are stacked together, are bonded without bonding agent therebetween, and framework is inserted as an entirety
It is interior to be made overall half cellular film formed body.
The technical scheme invented is described in detail below in conjunction with specific embodiment and comparative example.Embodiment 1 and contrast
The adsorber particles used in example 1,2 are zeolite particles, and thermoplasticity bonding agent uses methacryl resin and PIC
The two-package curing type bonding agent being made, converts the particle diameter ratio of the two and makes the function adsorbed film high, its specification such as institute of table 1
Show, adsorbed film specification:210 × 210 × 25mmt, convex mound number 30, filtration area 0.315m2, amount of zeolite 250g/m2。
Table 1
Size |
210×210×25mmt |
|
0.315 |
|
250 |
To the function adsorbed film high for making, the initial stage that determines is 300ppm by concentration, and toluene when wind speed is 1.5m/s goes
Except performance and toluene saturated extent of adsorption.
Embodiment 1
Adsorbent uses 350 μm of zeolite particles, and thermoplasticity bonding agent uses 100 μm of methacryl resins and polyisocyanate
The two-package curing type bonding agent that ester is made, the particle diameter ratio of the two is that two liquid that methacryl resin and PIC are made are hard
Change type bonding agent/zeolite=28.6%, makes the adsorbed film of waste gas containing VOCs (i.e. described function adsorbed film high).
To the VOCs waste gas adsorbed films for making, the initial stage is determined by concentration 300ppm, the toluene removal of wind speed 1.5m/s
Can be with toluene saturated extent of adsorption.Result such as table 2, initial stage toluene removal performance is 88%, and the saturated extent of adsorption of toluene is 36g, filter
Material is in good condition.I.e. the absorption property at initial stage, saturated extent of adsorption, adhesion strength are all excellent.And for following comparative examples 1,2, at the beginning of it
Absorption property, saturated extent of adsorption, the adhesion strength of phase are also all excellent.
Comparative example 1
In comparative example 1, thermoplasticity bonding agent is using particle diameter less than above-mentioned particle size range lower limit (the 1/4 of adsorbent)
The two-package curing type bonding agent that methacryl resin and PIC are made makes the adsorbed film of waste gas containing VOCs.Specific adsorbent
Using 350 μm of zeolite particles, thermoplasticity solid is made using the methacryl resin and PIC of 20 μm of particle diameter
Two-package curing type bonding agent, the particle diameter ratio of the two is the two-package curing type bonding that methacryl resin and PIC are made
Agent/zeolite=5.7%.
To the VOCs waste gas adsorbed films for making, the initial stage is determined by concentration 300ppm, the toluene removal of wind speed 1.5m/s
Energy, saturated extent of adsorption, as a result such as table 2, initial stage toluene removal performance is 50%, and the saturated extent of adsorption of toluene is 10g, the i.e. contrast
The absorption property of the adsorbed film of waste gas containing VOCs of example 1 is very low.
Comparative example 2
Metering system tree of the thermoplasticity bonding agent using particle diameter more than above-mentioned particle size range higher limit (the 1/3 of adsorbent)
The two-package curing type bonding agent that fat and PIC are made makes the adsorbed film of waste gas containing VOCs of comparative example 2.
Specific adsorbent uses 350 μm of zeolite particles, and thermoplasticity bonding agent uses the methacryl resin of 350 μm of particle diameter
The two-package curing type bonding agent being made with PIC, the particle diameter ratio of the two is methacryl resin and PIC system
Into two-package curing type bonding agent/activated carbon=100%, make VOCs waste gas adsorbed films.
The Bonding strength of the filter material of the comparative example 2 is weak, causes to peel off, it is impossible to be made adsorbed film (referring to table 2).Conclude above-mentioned
Embodiment 1, comparative example 1,2 the results are shown in Table 2.
Adsorbent uses 350 μm of zeolite particles, and during zeolite sized particles, particle diameter is in regular distribution, sets the average grain
When the desired value in footpath is 350 μm, the main distribution of its particle diameter is in 200-500 μm.
Table 2
Project |
Embodiment 1 |
Comparative example 1 |
Comparative example 2 |
Average particle size of zeolite μm |
350 |
350 |
350 |
Bonding agent average grain diameter μm |
100 |
20 |
350 |
Particle diameter ratio bonding agent/zeolite |
28.6% |
5.7% |
100% |
Initial stage toluene removal performance % |
88% |
50% |
-- |
Saturated extent of adsorption g |
36 |
10 |
-- |
Filter material state |
○ |
○ |
× |
In function adsorbed film high provided in an embodiment of the present invention, absorption is clamped between active carbon fibre d type non-woven membrane
Agent particle, this adsorbed film of waste gas containing VOCs on film, the particle diameter of its adsorber particles are fixed on thermoplasticity bonding agent
200-500 μm, because the thermoplasticity bonding agent particle diameter to be reduced to the 1/4-1/3 of above-mentioned adsorber particles particle diameter, it is to avoid heat
Plasticity bonding agent particle is coated on zeolite particles surface, and the absorption property of zeolite particles will not be reduced.
Additionally, the bonding agent interval is lighted is made the unit that half cellular VOCs adsorbs film formed body, even so
Bonding agent usage amount is few, permanently effective can also play effect of sustainable high function adsorbed film of the removal containing VOCs waste gas.Because subtracting
The effective availability that bonding agent usage amount also improves the sustainable high function adsorbed film of the removal containing VOCs waste gas is lacked.Because of suppression
Make in off-gas flows stress, so prevent waste gas containing VOCs to adsorb film formed body deforming, can play long-term sustainable
The function effect high of removal containing VOCs waste gas.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.