CN108176188A - Application method and molecular sieve combination body of the molecular sieve combination body in exhaust gas is purified - Google Patents
Application method and molecular sieve combination body of the molecular sieve combination body in exhaust gas is purified Download PDFInfo
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- CN108176188A CN108176188A CN201810018835.8A CN201810018835A CN108176188A CN 108176188 A CN108176188 A CN 108176188A CN 201810018835 A CN201810018835 A CN 201810018835A CN 108176188 A CN108176188 A CN 108176188A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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Abstract
The invention discloses application method and molecular sieve combination body of a kind of molecular sieve combination body in exhaust gas is purified, if molecular sieve combination body includes multi-pore structure carrier and dried layer molecular screen material layer, the interstitial space that molecular sieve combination body has makes it have the first specific surface area, and application method includes：When if the dried layer molecular screen material layer being attached on multi-pore structure carrier, which reaches adsorption saturation, spends, by coating one layer of new molecular screen material layer on the surface of molecular sieve combination body, measure the second specific surface area that the interstitial space that molecular sieve combination body has at this time makes it have, continue the purification absorption of exhaust gas, repeat absorption, coating step, when the ratio of the second specific surface area and the first specific surface area reaches preset value, it is not coated with new molecular screen material layer, and carries out the desorption processing of molecular sieve；The molecular sieve combination body used in the above method；The present invention can greatly simplify operation in the case where having substantially no effect on adsorption capacity and save the energy.
Description
Technical field
The invention belongs to VOCs treatment fields, and in particular to a kind of use of molecular sieve combination body in exhaust gas is purified
Method and molecular sieve combination body.
Background technology
The involved industry of industrial source volatile organic matter (VOCs) discharge is numerous, and the influence to air quality is notable, with
China's expanding economy, the pollution of VOCs has become current key cities of China group and key area air combined pollution
One of important precursor, at present VOCs purify common adsorbent mainly active charcoal, activated carbon fibre, molecular sieve and silica gel
Deng.Wherein, molecular sieve is handed over it with regular aperture structure, big specific surface area, excellent stability, high activity and ion
The features such as transsexual, has obtained more and more applications in VOCs purifications.
Molecular sieve is mostly powder or graininess, needs that molecular sieve is attached on carrier by adhesive etc., to be formed
Higher specific surface area, enables molecular sieve to have the contact area larger with absorbate, and molecular sieve of the prior art is attached
After on carrier, desorption is just only had to pass through after adsorption saturation and is recycled, desorption process is more troublesome again, economy effect
Benefit is not high, while is desorbed the high temperature of needs so that the energy consumption being desorbed every time can be very high, and carrier uses ceramics more in the prior art
The honeycomb of material, higher price, processing carry etc. be required to a large amount of manpower and materials, when coating molecular screen material also compared with
It is bothersome.
Invention content
The technical problems to be solved by the invention are to overcome the deficiencies of the prior art and provide a kind of improved molecular sieve combination
Application method of the body in exhaust gas is purified becomes more simple, again by the purification adsorption process of this application method exhaust gas
The number of desorption is significantly reduced, and then has saved cost.
The present invention additionally provides a kind of molecular sieve combination body simultaneously.
For solution more than technical problem, a kind of technical solution that the present invention takes is as follows：
A kind of application method of molecular sieve combination body in exhaust gas is purified, the molecular sieve combination body include multi-pore structure
If carrier and the dried layer molecular screen material layer being attached on the multi-pore structure carrier, the hole that the molecular sieve combination body has
Gap space makes it have the first specific surface area, and the application method includes：When the institute being attached on the multi-pore structure carrier
It is if new by coating one layer on the surface of the molecular sieve combination body when stating dried layer molecular screen material layer and reaching adsorption saturation and spend
Molecular screen material layer measures the second specific surface area that the interstitial space that the molecular sieve combination body has at this time makes it have, so
Continue the purification absorption of exhaust gas afterwards, repeat absorption, coating step several times, until second specific surface area and described the
During numerical value of the ratio of one specific surface area between 0.3-0.8, it is not coated with new molecular screen material layer, and carries out molecular sieve
Desorption processing, realizes the recycling of molecular screen material.
Preferably, numerical value of the ratio between 0.4-0.6.
Some preferred aspects according to the present invention, the multi-pore structure carrier for fiber bundle structure, honeycomb structure or
Reticular structure.
More according to the present invention specific and preferred aspect, the material of the multi-pore structure carrier is fibrous paper, nothing
Woven fabric, chemical fibre or can high temperature degradation material；
The fiber bundle structure is made of chemical fibre, and the honeycomb structure carrier is by fibrous paper, non-woven fabrics or can high temperature drop
Solution material is made, and the reticular structure is made of non-woven fabrics.
In certain specific embodiments of the invention, it is described can high temperature degradation material moulded for thermoplastic resin or starch base
Material, the thermoplastic resin be selected from polyethylene, polyvinyl chloride, polystyrene, polyamide, polyformaldehyde, makrolon, polyphenylene oxide,
One or more combinations in polysulfones or rubber, the starch plastics are prepared by passing through chemical modification thermoplastic starch
Powder.Specifically, starch plastics are to carry out chemical modification to starch using chemical reaction, reduce the hydroxyl of starch, change its original
Ative starch so as to change the corresponding performance of starch, is become thermoplastic starch by some structures.Thermoplastic starch is specifically as follows sweet
Oily plasticized starch, formamide plasticized starch etc.).
One according to the present invention specific and preferred aspect, when the material of the multi-pore structure carrier is fibrous paper,
When non-woven fabrics or chemical fibre, the method for the desorption processing is：The molecular sieve combination body for carrying out desorption processing is crushed,
So that the molecular screen material being attached on the multi-pore structure carrier becomes particle or powder, detach the multi-pore structure and carry
The molecular screen material of the fragmentation is carried out desorption manipulation, you can the molecular sieve material that must be desorbed by body and the molecular screen material of fragmentation
Material.
Another specific and preferred aspect according to the present invention, when the material of the multi-pore structure carrier is fiber
When paper, non-woven fabrics or chemical fibre, the method for the desorption processing is：Scraping carries out the molecular sieve combination body of desorption processing
The molecular screen material layer on surface, and unified collection, then carry out desorption manipulation, you can must be desorbed to the molecular screen material of collection
Molecular screen material.
According to the present invention, the desorption manipulation is more than or equal to the boiling point of adsorbable object adsorbed by molecular screen material in temperature
Under conditions of carry out.
Another specific and preferred aspect according to the present invention, when the material of the multi-pore structure carrier is can high temperature
During degradable material, the method for the desorption processing is：The molecular sieve combination body for carrying out desorption processing is subjected to high temperature
Desorption, the desorption temperature of the elevated temperature desorption higher than it is described can high temperature degradation material degradation temperature and more than or equal to by molecular sieve
The boiling point of the adsorbable object of material absorption, you can the molecular screen material that must be desorbed.
Another technical solution provided by the invention：A kind of molecular sieve combination body described above, which is characterized in that described point
Sub- screen banks zoarium is by by the multi-pore structure carrier, attachment molecules have sieved the multi-pore structure carrier or of material
It carried out the purification absorption of exhaust gas and attachment molecules sieves the multi-pore structure carrier impregnation of material in molecular sieve slurry
Middle gained.
Preferably, the raw material of the molecular sieve slurry includes molecular sieve, binding agent, surfactant and water, the molecule
Screening the pulp material by the way that the raw material is obtained by mixing, the molecular sieve, the binding agent, the surfactant the mass ratio that feeds intake
For 10-30 ︰ 60-240 ︰ 1.
In accordance with the present invention it is preferred that the specific preparation method of the molecular sieve slurry is：The binding agent is dispersed in water
In sol solutions are made, the pH value of the sol solutions is controlled successively to be scattered in the surfactant, the molecular sieve for 2-4
Dispersion liquid is made in water, the pH value for controlling the dispersion liquid is neutrality, is then mixed the dispersion liquid with the sol solutions, i.e.,
Obtain the molecular sieve slurry；Wherein, the sol solutions are Ludox and/or Aluminum sol, and the Ludox can be by by dioxy
SiClx is dispersed in water obtained, and the Aluminum sol can be obtained by the way that boehmite is dispersed in water.
Due to the use of above technical scheme, the present invention has the following advantages that compared with prior art：
The present invention is adsorbed by the basis of original molecular sieve combination body, constantly repeating, coats new molecular screen material
The step of layer, the specific surface area made it have with reference to the interstitial space that has of control molecular sieve combination body so that in not shadow substantially
The number of desorption is greatly reduced in the case of ringing the adsorption capacity to VOCs in exhaust gas, since energy consumption is very high needed for desorption, because
This can be greatly cost-effective, and the manual operation purified when adsorbing becomes simpler, reduces physical labor intensity.
Specific embodiment
In order to overcome the defects of the prior art, provide a kind of molecular sieve combination body makes the present invention in exhaust gas is purified
With method, if the molecular sieve combination body includes multi-pore structure carrier and the dried layer being attached on the multi-pore structure carrier
Molecular screen material layer, the interstitial space that the molecular sieve combination body has make it have the first specific surface area, the application method
Including：If the dried layer molecular screen material layer described in be attached on the multi-pore structure carrier reaches adsorption saturation when spending, lead to
It crosses and coats one layer of new molecular screen material layer on the surface of the molecular sieve combination body, measure the molecular sieve combination body tool at this time
The second specific surface area that some interstitial spaces make it have then proceeds by the purification absorption of exhaust gas, repeats absorption, coating step
Suddenly several times, until during numerical value of the ratio of second specific surface area and first specific surface area between 0.3-0.8, no
New molecular screen material layer is coated with, and carries out the desorption processing of molecular sieve, you can realizes the recycling of molecular screen material.
In the present invention, material layer composition molecular sieve combination body is sieved by adhering to multilayer molecular on multi-pore structure carrier,
The primary molecular sieve combination body can be re-used after adhering to new one layer every time, is just further added by when absorption reaches saturation newly
One layer, after accumulating thickness and reaching a certain level, molecular sieve combination body interstitial space will be gradually reduced, certain when narrowing down to
After degree, the specific surface area that interstitial space that molecular sieve combination body has makes it have will reduce, and can adhere to new molecule
The area of sieve material also reduces to a certain extent, and the adsorption capacity of molecular sieve combination body at this time, which can be also reduced to, to be insufficient for
Requirement.Due to above-mentioned way, molecular sieve combination body can pass through without desorption will be recycled by being adsorbed onto saturation every time
It constantly coating new molecular screen material layer and realizes adsorption function, i.e., the technical program can be realized to be used for multiple times unifies desorption again,
Desorption number substantially reduces, and energy consumption is greatly reduced.
In the present invention, by reform multi-pore structure carrier medium, it is preferable to use can high temperature degradation material or fibrous paper
Or non-woven fabrics etc., these materials have many advantages, such as light, cheap, easily molded, facilitate carrying compared with existing ceramics wait,
Molding can be fiber bundle structure, can be the reticular structure that legacy cellular structure or non-woven fabrics form multilayer fibre web
Etc..
In the present invention, when multi-pore structure carrier medium for can high temperature degradation material be thermoplastic resin or starch base modeling
During material, multi-pore structure carrier and molecular screen material in desorption process, can be together put into de- by the degradation property that has
In applying equipment, the high temperature generated by being desorbed equipment makes absorbate gasify or liquefy together with multi-pore structure carrier, finally
Molecular screen material free from foreign meter is isolated, so as to its recycling.
In the present invention, when multi-pore structure carrier medium for fibrous paper or non-woven fabrics or chemical fibre when materials when, concrete dynamic modulus knot
Structure carrier just has in itself relative to the higher fracture toughness of molecular screen material layer and intensity, and the works such as percussion are rolled by physics
With molecular screen material being made to be broken into particle or powder, the higher toughness and intensity that multi-pore structure carrier has due to it at this time
Will not fragmentation, by screening can easily detach molecular screen material and multi-pore structure carrier, then molecular screen material is put
Enter to be desorbed in equipment and be desorbed.Desorption process is due to being directed to the molecular screen material not comprising multi-pore structure carrier, similarly
Desorption equipment can carry out desorption work with lower energy consumption, more molecular screen materials, can preferably realize desorption and saving
Energy consumption.
Said program is described further below in conjunction with specific embodiment；It should be understood that these embodiments are for illustrating
The basic principles, principal features and advantages of the present invention, and the present invention is not by the scope limitation of following embodiment；It is used in embodiment
Implementation condition further adjustment can be done according to specific requirement, the implementation condition being not specified is usually the item in routine experiment
Part.In following, unless otherwise specified, all raw materials both from commercially available or conventional method by this field prepare and
Into.
Embodiment 1
A kind of application method of molecular sieve combination body in exhaust gas is purified, the molecular sieve combination body include multi-pore structure
Carrier and 5 layers of molecular screen material layer being attached on the multi-pore structure carrier, the hole that the molecular sieve combination body has
Space makes it have the first specific surface area, wherein, the multi-pore structure carrier be the honeycomb structure made of polyethylene, institute
The raw material for stating molecular sieve slurry includes molecular sieve, binding agent, surfactant and water, and the molecular sieve slurry is by by the original
Material is obtained by mixing, the molecular sieve, the binding agent, the surfactant the mass ratio that feeds intake for 20 ︰, 160 ︰ 1；
The application method includes：When the 5 layers of molecular screen material layer being attached on the multi-pore structure carrier reaches
When being spent to adsorption saturation, by coating one layer of new molecular screen material layer on the surface of the molecular sieve combination body, measure at this time
The second specific surface area that the interstitial space that the molecular sieve combination body has makes it have, the purification for then proceeding by exhaust gas are inhaled
It is attached, absorption, coating step are repeated, until when the ratio of second specific surface area and first specific surface area is 0.4, no longer
New molecular screen material layer is coated, and carries out the desorption processing of molecular sieve, realizes the recycling of molecular screen material.
Wherein, the processing method for being desorbed processing is：The above-mentioned molecular sieve combination body for carrying out desorption processing is carried out high
Temperature desorption, the desorption temperature of the elevated temperature desorption are higher than the degradation temperature of polyethylene and are more than or equal to what is adsorbed by molecular screen material
The boiling point of adsorbable object, you can the molecular screen material that must be desorbed.
Embodiment 2
A kind of application method of molecular sieve combination body in exhaust gas is purified, the molecular sieve combination body include multi-pore structure
Carrier and 5 layers of molecular screen material layer being attached on the multi-pore structure carrier, the hole that the molecular sieve combination body has
Space makes it have the first specific surface area, wherein, the multi-pore structure carrier is the cellular knot made of thermoplastic starch
Structure, the raw material of the molecular sieve slurry include molecular sieve, binding agent, surfactant and water, the molecular sieve slurry pass through by
The raw material is obtained by mixing, the molecular sieve, the binding agent, the surfactant the mass ratio that feeds intake for 20 ︰, 160 ︰ 1；
The application method includes：When the 5 layers of molecular screen material layer being attached on the honeycomb structure carrier reaches
When being spent to adsorption saturation, by coating one layer of new molecular screen material layer on the surface of the molecular sieve combination body, measure at this time
The second specific surface area that the interstitial space that the molecular sieve combination body has makes it have, the purification for then proceeding by exhaust gas are inhaled
It is attached, absorption, coating step are repeated, until when the ratio of second specific surface area and first specific surface area is 0.4, no longer
New molecular screen material layer is coated, and carries out the desorption processing of molecular sieve, realizes the recycling of molecular screen material.
Wherein, the processing method for being desorbed processing is：The above-mentioned molecular sieve combination body for carrying out desorption processing is carried out high
Temperature desorption, the desorption temperature of the elevated temperature desorption is higher than the degradation temperature of thermoplastic starch and is more than or equal to be inhaled by molecular screen material
The boiling point of attached adsorbable object, you can the molecular screen material that must be desorbed.
Embodiment 3
A kind of application method of molecular sieve combination body in exhaust gas is purified, the molecular sieve combination body include multi-pore structure
Carrier and 5 layers of molecular screen material layer being attached on the multi-pore structure carrier, the hole that the molecular sieve combination body has
Space makes it have the first specific surface area, wherein, the multi-pore structure carrier is the fiber bundle structure being made of chemical fibre, described
The raw material of molecular sieve slurry includes molecular sieve, binding agent, surfactant and water, and the molecular sieve slurry is by by the raw material
Be obtained by mixing, the molecular sieve, the binding agent, the surfactant the mass ratio that feeds intake for 20 ︰, 160 ︰ 1；
The application method includes：When the 5 layers of molecular screen material layer being attached on the fiber bundle structure carrier reaches
When being spent to adsorption saturation, by coating one layer of new molecular screen material layer on the surface of the molecular sieve combination body, measure at this time
The second specific surface area that the interstitial space that the molecular sieve combination body has makes it have, the purification for then proceeding by exhaust gas are inhaled
It is attached, absorption, coating step are repeated, until when the ratio of second specific surface area and first specific surface area is 0.5, no longer
New molecular screen material layer is coated, and carries out the desorption processing of molecular sieve, realizes the recycling of molecular screen material.
It is described desorption processing method be：Scraping carries out the molecule in the above-mentioned molecular sieve combination body surface face of desorption processing
Material layer, and unified collection are sieved, desorption manipulation then is carried out to the molecular screen material of collection, you can the molecular sieve material that must be desorbed
Material, wherein, the desorption manipulation under conditions of temperature is more than or equal to the boiling point of adsorbable object that is adsorbed by molecular screen material into
Row.
Embodiment 4
A kind of application method of molecular sieve combination body in exhaust gas is purified, the molecular sieve combination body include multi-pore structure
Carrier and 5 layers of molecular screen material layer being attached on the multi-pore structure carrier, the hole that the molecular sieve combination body has
Space makes it have the first specific surface area, wherein, the multi-pore structure carrier is to form the netted of multilayer fibre web by non-woven fabrics
Structure, the raw material of the molecular sieve slurry include molecular sieve, binding agent, surfactant and water, and the molecular sieve slurry passes through
The raw material is obtained by mixing, the molecular sieve, the binding agent, the surfactant the mass ratio that feeds intake for 30 ︰, 240 ︰
1；
The application method includes：When the 5 layers of molecular screen material layer being attached on the reticular structure carrier reaches
When adsorption saturation is spent, by coating one layer of new molecular screen material layer on the surface of the molecular sieve combination body, institute at this time is measured
The second specific surface area that the interstitial space that stating molecular sieve combination body has makes it have, the purification for then proceeding by exhaust gas are inhaled
It is attached, absorption, coating step are repeated, until when the ratio of second specific surface area and first specific surface area is 0.6, no longer
New molecular screen material layer is coated, and carries out the desorption processing of molecular sieve, realizes the recycling of molecular screen material.
It is described desorption processing method be：The above-mentioned molecular sieve combination body for carrying out desorption processing is crushed so that attached
The molecular screen material on the reticular structure carrier becomes particle or powder, detaches the reticular structure carrier and fragmentation
The molecular screen material of the fragmentation is carried out desorption manipulation by molecular screen material, you can the molecular screen material that must be desorbed, wherein, institute
Desorption manipulation is stated to carry out under conditions of temperature is more than or equal to the boiling point of adsorbable object adsorbed by molecular screen material.
Experimental example
Application method of the molecular sieve combination body of above-described embodiment 1-4 in exhaust gas is purified is respectively used to same Industry Waste
The adsorption treatment of exhaust gas is carried out at gas discharge, and the adsorption treatment time is identical, measures the degree of absorption α 1- to VOCs in exhaust gas
4。
Simultaneously according to conventional method of the prior art, i.e., after molecular sieve of the prior art is attached on carrier, only
It is just recycled, is measured in same time to the degree of absorption α 5 of VOCs in exhaust gas by desorption after adsorption saturation.
Degree of absorption table specific as follows：
| α1 | α2 | α3 | α4 | α5 |
| 95.6% | 96.3% | 92.9% | 95% | 90.2% |
In conclusion the present invention can greatly simplify operation in the case where having substantially no effect on adsorption capacity, reduce
Physical labor intensity and the energy is saved.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention, all according to the present invention
The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of application method of molecular sieve combination body in exhaust gas is purified, the molecular sieve combination body is carried including multi-pore structure
If body and the dried layer molecular screen material layer being attached on the multi-pore structure carrier, the hole that the molecular sieve combination body has
Space makes it have the first specific surface area, which is characterized in that the application method includes：It is carried when being attached to the multi-pore structure
If the dried layer molecular screen material layer on body reaches adsorption saturation when spending, by being coated on the surface of the molecular sieve combination body
One layer of new molecular screen material layer, measure that the interstitial space that the molecular sieve combination body has at this time makes it have second compare table
Area then proceeds by the purification absorption of exhaust gas, absorption, coating step is repeated several times, until second specific surface area
During with numerical value between 0.3-0.8 of the ratio of first specific surface area, it is not coated with new molecular screen material layer, and carries out
The desorption processing of molecular sieve, realizes the recycling of molecular screen material.
2. application method of the molecular sieve combination body according to claim 1 in exhaust gas is purified, which is characterized in that the ratio
The numerical value being worth between 0.4-0.6.
3. application method of the molecular sieve combination body according to claim 1 in exhaust gas is purified, which is characterized in that described more
Pore structure carrier is fiber bundle structure, honeycomb structure or reticular structure.
4. application method of the molecular sieve combination body according to claim 3 in exhaust gas is purified, which is characterized in that described more
The material of pore structure carrier is fibrous paper, non-woven fabrics, chemical fibre or can high temperature degradation material；
The fiber bundle structure is made of chemical fibre, and the honeycomb structure carrier is by fibrous paper, non-woven fabrics or can high temperature degradation material
Material is made, and the reticular structure is made of non-woven fabrics.
5. application method of the molecular sieve combination body according to claim 4 in exhaust gas is purified, which is characterized in that it is described can
High temperature degradation material is thermoplastic resin or starch plastics, and the thermoplastic resin is selected from polyethylene, polyvinyl chloride, polyphenyl second
One or more combinations in alkene, polyamide, polyformaldehyde, makrolon, polyphenylene oxide, polysulfones or rubber, the starch base modeling
Prepared by expecting to pass through chemical modification thermoplastic starch.
6. application method of the molecular sieve combination body according to claim 4 in exhaust gas is purified, which is characterized in that when described
When the material of multi-pore structure carrier is fibrous paper, non-woven fabrics or chemical fibre, the method for the desorption processing is：It will take off
The molecular sieve combination body of attached processing crushes so that the molecular screen material being attached on the multi-pore structure carrier becomes
Grain or powder, detach the multi-pore structure carrier and the molecular screen material of fragmentation, and the molecular screen material of the fragmentation is carried out
Desorption manipulation, you can the molecular screen material that must be desorbed, wherein, the desorption manipulation is more than or equal in temperature to be inhaled by molecular screen material
It is carried out under conditions of the boiling point of attached adsorbable object.
7. application method of the molecular sieve combination body according to claim 4 in exhaust gas is purified, which is characterized in that when described
When the material of multi-pore structure carrier is fibrous paper, non-woven fabrics or chemical fibre, the method for the desorption processing is：Scraping needs to carry out
The molecular screen material layer in the molecular sieve combination body surface face of processing, and unified collection are desorbed, then to the molecular sieve material of collection
Material carries out desorption manipulation, you can the molecular screen material that must be desorbed, wherein, the desorption manipulation is more than or equal in temperature by molecular sieve
It is carried out under conditions of the boiling point of the adsorbable object of material absorption.
8. application method of the molecular sieve combination body according to claim 4 in exhaust gas is purified, which is characterized in that when described
The material of multi-pore structure carrier for can high temperature degradation material when, it is described desorption processing method be：It will need to carry out at desorption
The molecular sieve combination body of reason carries out elevated temperature desorption, and the desorption temperature of the elevated temperature desorption can high temperature degradation material higher than described in
Degradation temperature and more than or equal to the boiling point of adsorbable object that is adsorbed by molecular screen material, you can the molecular screen material that must be desorbed.
9. the molecular sieve combination body described in a kind of any one of claim 1-8 claims, which is characterized in that the molecular sieve
Assembly by by the multi-pore structure carrier, attachment molecules sieve material the multi-pore structure carrier or carried out
Cross the purification absorption of exhaust gas and the multi-pore structure carrier impregnation of attachment molecules sieve material institute in molecular sieve slurry
.
10. molecular sieve combination body according to claim 9, which is characterized in that the raw material of the molecular sieve slurry includes dividing
Sub- sieve, binding agent, surfactant and water, the molecular sieve slurry is by the way that the raw material is obtained by mixing, the molecular sieve, institute
The mass ratio that feeds intake of binding agent, the surfactant is stated as 10-30 ︰ 60-240 ︰ 1.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111085239A (en) * | 2019-12-17 | 2020-05-01 | 江苏苏净集团有限公司 | Preparation method of honeycomb carrier catalytic material based on molecular sieve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111085239A (en) * | 2019-12-17 | 2020-05-01 | 江苏苏净集团有限公司 | Preparation method of honeycomb carrier catalytic material based on molecular sieve |
| CN111085239B (en) * | 2019-12-17 | 2023-03-14 | 江苏苏净集团有限公司 | Preparation method of honeycomb carrier catalytic material based on molecular sieve |
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