CN104645926A - Air filtering material containing porous particles and producing method thereof - Google Patents
Air filtering material containing porous particles and producing method thereof Download PDFInfo
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- CN104645926A CN104645926A CN201310582324.6A CN201310582324A CN104645926A CN 104645926 A CN104645926 A CN 104645926A CN 201310582324 A CN201310582324 A CN 201310582324A CN 104645926 A CN104645926 A CN 104645926A
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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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3204—Inorganic carriers, supports or substrates
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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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3214—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating
- B01J20/3225—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the method for obtaining this coating or impregnating involving a post-treatment of the coated or impregnated product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/25—Coated, impregnated or composite adsorbents
-
- 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
- B01D2257/702—Hydrocarbons
- B01D2257/7022—Aliphatic hydrocarbons
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses an air filtering material containing porous particles and a producing method thereof. The air filtering material is at least composed of an upper nonwoven cloth layer and a lower nonwoven cloth layer and a porous particle layer clamped therebetween, wherein the porous particle layer at least contains porous particles containing more than 5% by weight of -NHHN- groups. The air filtering material containing the porous particles has an excellent removing performance to aldehyde gas and meanwhile can maintain an excellent removing efficiency to organic gases. The air filtering material can be applied in the field of filtration in automobiles, home-use purifiers and clean rooms and the like.
Description
Technical field
The present invention relates to a kind of air filting material containing porous granule and production method thereof.
Background technology
Along with the densification of building, the sharp increase of automobile quantity, the increase etc. of industrial discharge, the discharge rate of compound volatile harmful gas in air is caused to increase.And the general filtering material produced is clamping active carbon at present, thus reach the pernicious gas in absorbed air.But gas contained in air is generally compound gas, especially in domestic environment, in environment inside car, require that the demand of removing gaseous aldehyde is day by day obvious, and the filter material of current used conventional activated carbon clamping significantly effectively cannot remove the mist of aldehyde-containing type gas.
As Chinese patent CN101332385 discloses the filtering material clamping activated carbon granule between a kind of two-layer nonwoven, although this filtering material can keep the interception to solid particulate matters such as dust, utilize charcoal absorption function can also deodorizing, but filtering material can only remove the general gas flow in air, as gaseous aldehyde etc., removal effect is not obvious.
Summary of the invention
The object of the present invention is to provide one efficiently can remove formaldehyde, and still can keep the air filting material containing active carbon and the production method thereof of good removal efficiency to organic gas simultaneously.
Technical solution of the present invention is as follows: the present invention is at least be made up of upper and lower two-layer nonwoven layer and middle clamping porous granule layer thereof containing the air filting material of porous granule, the porous granule containing-NHHN-group at least containing more than 5 % by weight in described porous granule layer.In above-mentioned active carbon layer containing more than 5 % by weight comprise the following two kinds situation containing the porous granule of-NHHN-group: in porous granule layer all porous granules be all through cross containing the chemicals treatment of-NHHN-group and in this particle layer by common porous particle with more than 5 % by weight the mixture of porous granule crossed of the chemicals treatment through containing-NHHN-group form.Above-mentioned common porous particle refers to crosses porous granule without any Chemical treatment, can remove the organic gas such as toluene like this; Also can be through the porous granule crossed by other chemicals treatment such as acid or alkali, alkaline gas or sour gas can be removed like this; Or one or more mixing porous granules above-mentioned.
Due to add the orifice surface of porous granule inside after containing the medicament of-NHHN-group cover by-NHHN-material, the adsorption capacity to gas beyond aldehydes will be reduced like this, therefore the comprehensive deodorization of filtering material is considered, the porous granule containing-NHHN-group preferably containing 5 ~ 85 % by weight in above-mentioned porous granule layer.Above-mentioned upper and lower two-layer nonwoven can adopt the methods such as melt-blown, spunbond, chemical adhesion to be formed.
Air filting material containing porous granule of the present invention, the grammes per square metre of above-mentioned porous granule layer is 10 ~ 500g/m
2.If the grammes per square metre of porous granule layer is lower than 10g/m
2, then not strong to the removal ability of foul smell, can not effectively remove foul smell and gaseous aldehyde; If the grammes per square metre of porous granule layer is higher than 500g/m
2, the resistance of filtering material will be increased, in process, easily cause bonding insufficient with upper and lower two-layer nonwoven layer simultaneously, thus the phenomenon of delamination occurs.Consider the adequacy of deodorization to gas and bonding, the grammes per square metre preferably 20 ~ 200g/m of porous granule layer
2.
Air filting material containing porous granule of the present invention, the particle diameter of above-mentioned porous granule is 100 ~ 500 μm.If when the particle diameter of porous granule is less than 100 μm, although speed the infiltration rate of foul smell, the porous granule crossing small particle diameter easily comes off from the space of non-woven fabrics, the more difficult control of process engineering, easily cause the problems such as equipment pollution, and even in use easily form airborne dust, contaminated air; If the particle diameter of porous granule is greater than 500 μm, upper and lower two-layer nonwoven easily by bursting, thus will reduce the intercepting efficiency to dust.Consider processability, the particle diameter of porous granule preferably 150 ~ 300 μm.
Air filting material containing porous granule of the present invention, above-mentioned porous granule is one or more in activated carbon granule, silicon dioxide granule, molecular sieve, quartz sand, porous ceramics.
Air filting material containing porous granule of the present invention is 5 ~ 100% to the removal efficiency of gaseous aldehyde.Filtering material not only has close relationship with the addition containing-NHHN-group compounds to the removal efficiency of gaseous aldehyde, and the addition containing-NHHN-group compounds is higher, higher to the removal efficiency of gas.But also all have close associating with the size of filter material and the concentration of upper reaches foul smell with wind speed.If on filter material of the same area, upper reaches odor concentration remains unchanged, and wind speed increases, then the removal efficiency of foul smell can reduce; Otherwise wind speed reduces, then the removal efficiency of foul smell can increase.If on filter material of the same area, upper reaches wind speed remains unchanged, and odor concentration increases, then the removal efficiency of foul smell can reduce; Otherwise odor concentration reduces, then the removal efficiency of foul smell can increase.If upper reaches odor concentration remains unchanged, wind speed remains unchanged, and reduces over the area of filtering material, then the removal efficiency of foul smell can reduce; Otherwise increase the area of filtering material, then the removal efficiency of foul smell can increase.
The production method of the air filting material containing porous granule of the present invention, comprises the steps:
(1) mode of the solution containing-NHHN-group compounds by spray is sprayed on porous granule, or porous granule is immersed in the solution containing-NHHN-group compounds, at temperature is 50 ~ 150 DEG C, then carries out drying process;
(2) be by weight that 5 ~ 95:95 ~ 5 mix containing the porous granule of-NHHN-group with crude porous granule by what obtain through step (1) process;
(3) by the porous granule containing-NHHN-group obtained through step (1) process or the porous granule that obtains after step (2) mixing is clamped in the middle of two-layer nonwoven, finally obtained finished product.
Be sprinkling upon in layer of non-woven fabric after the porous granule that step (1) or step (2) obtain is mixed with hot-melt adhesive powder or according to sequencing, above-mentioned two kinds of materials be sprinkling upon in layer of non-woven fabric, then Compound Machining is carried out by heat-treating methods and another layer of non-woven fabric, or heat-treat again after laminating, finally form the filtering material of clamping porous particle.Above-mentioned heat treated temperature is 80 ~ 150 DEG C, the time is 20 ~ 400s.As required, also the levels of the filtering material of obtained clamping porous particle can be sprinkled porous particle again, and then difference compound last layer non-woven fabrics, finally form the filtering material of multi-layer porous stratum granulosum.
Above-mentioned is one or more in adipic dihydrazide, glutamic acid two hydrazides, amber acid dihydrazide containing-NHHN-group compounds.
Air filting material containing porous granule of the present invention not only has the feature high to the removal efficiency of gaseous aldehyde, still can keep the feature of good removal efficiency by other foul smell simultaneously, thus air is effectively purified.
Detailed description of the invention
In further detail the present invention is described by following examples and comparative example, but protection scope of the present invention is not limited to embodiment, each physical property in embodiment is measured by following methods.
[grammes per square metre of porous granule layer]
First measure the weight M1(g of lower nonwoven cloth), then porous granule is sprinkling upon on lower nonwoven cloth, then the weight M2(g of non-woven fabrics and porous granule is measured), the grammes per square metre M(g of porous granule layer is drawn according to computational methods below), its computing formula is as follows: M=M2-M1.
[foul smell removal efficiency]
The flow velocity of 0.1m/s will be pressed by size 0.1m containing odorous air-flow
2sample, measure the content W1(ppm by foul smell before sample), test out the content W2(ppm of the foul smell after by sample when ventilating 5min), draw the removal efficiency of foul smell according to computational methods below, its computing formula is as follows:
This method of testing is applicable to PARA FORMALDEHYDE PRILLS(91,95), toluene, the gases such as ammonia.
Embodiment 1
(1) adipic dihydrazide is sprayed on activated carbon granule by the mode of spray, then at temperature is 80 ~ 90 DEG C, carry out drying process, the activated carbon granule of obtained adipic dihydrazide process, the average grain diameter of this activated carbon granule is 150 μm, specific area is 1000 ~ 2000m
2/ g;
(2) be sprinkling upon in layer of non-woven fabric after the activated carbon granule of adipic dihydrazide process directly being mixed with hot-melt adhesive powder, then by temperature be 130 DEG C, the time is that the heat treatment of 2min and another layer of non-woven fabric carry out Compound Machining, finally being formed containing grammes per square metre is 50g/m
2the air filting material of active carbon, the removal efficiency recording this air filting material PARA FORMALDEHYDE PRILLS(91,95) is 80%, the removal efficiency of toluene is 75%.
Embodiment 2
(1) silica dioxide granule is immersed in adipic dihydrazide, then at temperature is 80 ~ 90 DEG C, carry out drying process, the obtained silica dioxide granule through adipic dihydrazide process, the average grain diameter of this silica dioxide granule is 200 μm, specific area is 1000 ~ 2000m
2/ g;
(2) will be after 70:30 mixes with the silica dioxide granule without adipic dihydrazide process process with weight ratio through the silica dioxide granule of adipic dihydrazide process;
(3) be sprinkling upon in layer of non-woven fabric after above-mentioned mixed silica dioxide granule being mixed with hot-melt adhesive powder again, then by temperature be 120 DEG C, the time is that the heat treatment of 3min and another layer of non-woven fabric carry out Compound Machining, finally being formed containing grammes per square metre is 50g/m
2the air filting material of porous granule layer, the removal efficiency recording this air filting material PARA FORMALDEHYDE PRILLS(91,95) is 60%, and the removal efficiency of toluene is 78%.
Embodiment 3
(1) adipic dihydrazide is sprayed on silica dioxide granule by the mode of spray, then at temperature is 80 ~ 100 DEG C, carry out drying process, the obtained silica dioxide granule through adipic dihydrazide process, the average grain diameter of this silica dioxide granule is 200 μm, specific area is 1500 ~ 2500m
2/ g;
(2) by the silica dioxide granule through adipic dihydrazide process, be after 70:30 mixes with the silica dioxide granule without adipic dihydrazide process process with weight ratio;
(3) be sprinkling upon in layer of non-woven fabric after above-mentioned mixed silica dioxide granule being mixed with hot-melt adhesive powder again, then by temperature be 130 DEG C, the time is that the heat treatment of 2min and another layer of non-woven fabric carry out Compound Machining, finally being formed containing grammes per square metre is 150g/m
2the air filting material of porous granule layer, the removal efficiency recording this air filting material PARA FORMALDEHYDE PRILLS(91,95) is 95%, and the removal efficiency of toluene is 90%.
Embodiment 4
(1) sieve particle is immersed in glutamic acid two hydrazides, then at temperature is 80 ~ 100 DEG C, carry out drying process, the obtained sieve particle through the process of glutamic acid two hydrazides, the average grain diameter of this sieve particle is 200 μm, specific area is 1500 ~ 2500m
2/ g;
(2) be sprinkling upon in layer of non-woven fabric after directly mixing with hot-melt adhesive powder through the sieve particle of glutamic acid two hydrazides process, then by temperature be 130 DEG C, the time is that the heat treatment of 2min and another layer of non-woven fabric carry out Compound Machining, finally being formed containing grammes per square metre is 60g/m
2the air filting material of sieve particle, recording this air filting material to the removal efficiency of ammonia is 60%, and the removal efficiency of toluene is 20%.
Embodiment 5
(1) activated carbon granule is immersed in glutamic acid two hydrazides, then at temperature is 80 ~ 90 DEG C, carry out drying process, the obtained activated carbon granule through the process of glutamic acid two hydrazides, the average grain diameter of this activated carbon granule is 300 μm, specific area is 2300 ~ 3500m
2/ g;
(2) will be after 40:60 mixes with the activated carbon granule without the process of glutamic acid two hydrazides with weight ratio through the activated carbon granule of glutamic acid two hydrazides process,
(3) be sprinkling upon in layer of non-woven fabric after above-mentioned mixed activated carbon granule being mixed with hot-melt adhesive powder again, then by temperature be 130 DEG C, the time is that the heat treatment of 2min and another layer of non-woven fabric carry out Compound Machining, finally being formed containing grammes per square metre is 80g/m
2the air filting material of active carbon, the removal efficiency recording this air filting material PARA FORMALDEHYDE PRILLS(91,95) is 65%, and the removal efficiency of toluene is 90%.
Embodiment 6
(1) silica dioxide granule is immersed in amber acid dihydrazide, then at temperature is 80 ~ 100 DEG C, carry out drying process, the obtained silica dioxide granule through the process of amber acid dihydrazide, the average grain diameter of this silica dioxide granule is 200 μm, specific area is 1500 ~ 2500m
2/ g;
(2) be 20:80 mix after with crude silica dioxide granule with weight ratio by the silica dioxide granule of amber acid dihydrazide process;
(3) be sprinkling upon in layer of non-woven fabric after above-mentioned mixed silica dioxide granule being mixed with hot-melt adhesive powder again, then by temperature be 130 DEG C, the time is that the heat treatment of 2.5min and another layer of non-woven fabric carry out Compound Machining, finally being formed containing grammes per square metre is 180g/m
2the air filting material of porous granule layer, the removal efficiency recording this air filting material PARA FORMALDEHYDE PRILLS(91,95) is the removal efficiency of 70% toluene is 95%.
Embodiment 7
(1) silica dioxide granule is immersed in amber acid dihydrazide, then at temperature is 80 ~ 100 DEG C, carry out drying process, the obtained silica dioxide granule through the process of amber acid dihydrazide, the average grain diameter of this silica dioxide granule is 200 μm, specific area is 1500 ~ 2500m
2/ g;
(2) be sprinkling upon in layer of non-woven fabric after the silica dioxide granule of amber acid dihydrazide process directly being mixed with hot-melt adhesive powder, then by temperature be 130 DEG C, the time is that the heat treatment of 2.5min and another layer of non-woven fabric carry out Compound Machining, finally being formed containing grammes per square metre is 200g/m
2the air filting material of silica, the removal efficiency recording this air filting material PARA FORMALDEHYDE PRILLS(91,95) is 95%, and the removal efficiency of toluene is 80%.
Comparative example 1
Be 200 μm by the average grain diameter alkali-treated without acid, specific area is 1500 ~ 2500m
2be sprinkling upon in layer of non-woven fabric after the activated carbon granule of/g mixes with hot-melt adhesive powder, then carry out Compound Machining by temperature is 120 DEG C, the time is 130 DEG C, the time is 2min heat treatment and another layer of non-woven fabric, finally being formed containing grammes per square metre is 100g/m
2the air filting material of active carbon, the removal efficiency recording this air filting material PARA FORMALDEHYDE PRILLS(91,95) is 5%, and the removal efficiency of toluene is 98%.
Table 1
Claims (8)
1. the air filting material containing porous granule, it is characterized in that: this filtering material is at least be made up of upper and lower two-layer nonwoven layer and middle clamping porous granule layer thereof, the porous granule containing-NHHN-group at least containing more than 5 % by weight in described porous granule layer.
2. the air filting material containing porous granule according to claim 1, is characterized in that: containing the porous granule containing-NHHN-group of 5 ~ 85 % by weight in described porous granule layer.
3. the air filting material containing porous granule according to claim 1 and 2, is characterized in that: the grammes per square metre of described porous granule layer is 10 ~ 500g/m
2.
4. the air filting material containing porous granule according to claim 1 and 2, is characterized in that: the particle diameter of described porous granule is 100 ~ 500 μm.
5. the air filting material containing porous granule according to claim 1 and 2, is characterized in that: described porous granule is one or more in activated carbon granule, silicon dioxide granule, molecular sieve, quartz sand, porous ceramics.
6. the air filting material containing porous granule according to claim 1 and 2, is characterized in that: this filtering material is 5 ~ 100% to the removal efficiency of gaseous aldehyde.
7. a production method for the air filting material containing porous granule according to claim 1, is characterized in that: comprise the steps:
(1) mode of the solution containing-NHHN-group compounds by spray is sprayed on porous granule, or porous granule is immersed in the solution containing-NHHN-group compounds, at temperature is 50 ~ 150 DEG C, then carries out drying process;
(2) be by weight that 5 ~ 95:95 ~ 5 mix containing the porous granule of-NHHN-group with crude porous granule by what obtain through step (1) process;
(3) by the porous granule containing-NHHN-group obtained through step (1) process or the porous granule that obtains after step (2) mixing is clamped in the middle of two-layer nonwoven, finally obtained finished product.
8. the production method of the air filting material containing porous granule according to claim 7, is characterized in that: described is one or more in adipic dihydrazide, glutamic acid two hydrazides, amber acid dihydrazide containing-NHHN-group compounds.
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| CN201310582324.6A CN104645926A (en) | 2013-11-20 | 2013-11-20 | Air filtering material containing porous particles and producing method thereof |
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|---|---|---|---|
| CN201310582324.6A CN104645926A (en) | 2013-11-20 | 2013-11-20 | Air filtering material containing porous particles and producing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823765A (en) * | 2015-12-03 | 2017-06-13 | 东丽纤维研究所（中国）有限公司 | A kind of air filting material containing porous granule |
| CN113463379A (en) * | 2020-03-30 | 2021-10-01 | 中国科学院大连化学物理研究所 | Melt-blown fabric for adsorbing inactivated viruses and application |
-
2013
- 2013-11-20 CN CN201310582324.6A patent/CN104645926A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106823765A (en) * | 2015-12-03 | 2017-06-13 | 东丽纤维研究所（中国）有限公司 | A kind of air filting material containing porous granule |
| CN113463379A (en) * | 2020-03-30 | 2021-10-01 | 中国科学院大连化学物理研究所 | Melt-blown fabric for adsorbing inactivated viruses and application |
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Application publication date: 20150527 |