CN109173645A - A kind of purifying formaldehyde material modification processes, purifying formaldehyde material and device - Google Patents
A kind of purifying formaldehyde material modification processes, purifying formaldehyde material and device Download PDFInfo
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- CN109173645A CN109173645A CN201811222362.XA CN201811222362A CN109173645A CN 109173645 A CN109173645 A CN 109173645A CN 201811222362 A CN201811222362 A CN 201811222362A CN 109173645 A CN109173645 A CN 109173645A
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- purifying formaldehyde
- formaldehyde material
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- sulfate solution
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
Abstract
The invention discloses a kind of purifying formaldehyde material modification processes, comprising the following steps: (1), liquor potassic permanganate and manganese sulfate solution is respectively configured；(2), conventional filter materials are put into manganese sulfate solution, manganese sulfate solution is made to be totally submerged conventional filter materials；(3), liquor potassic permanganate is added in the manganese sulfate solution of step (2), is stirred to react；(4), modified conventional filter materials after reaction, are taken out, it is dry, purifying formaldehyde material is obtained, purifying formaldehyde material is attached with manganese dioxide.The invention also discloses a kind of purifying formaldehyde material and a kind of methanal decontamination plants.Present invention efficiently solves the functions that conventional filter materials itself lack purifying formaldehyde, which has good clean-up effect with oxidizing process purifying formaldehyde, and can be purified at room temperature, and large-scale promotion is conducive to.
Description
Technical field
The present invention relates to technical field of air purification more particularly to a kind of purifying formaldehyde material modification processes, purifying formaldehyde
Material and device.
Background technique
Formaldehyde is a kind of colourless gas for having specific stimulation, research shows that formaldehyde is a kind of higher substance of toxicity,
Short term contact formaldehyde can stimulate eyes, nasal cavity and respiratory tract and cause allergic reaction, and Long Term Contact formaldehyde will increase carcinogenic and cause
Abnormal risk, formaldehyde has become one of serious atmosphere pollution at present.But glued board and people currently used as interior decoration
It makes containing very more formaldehyde in the binder and coating in plate, formaldehyde therein can be at room temperature gradually to surrounding
Environment release is to form the main body of formaldehyde in indoor air, and the release process of formaldehyde is generally up to 2 years or more, Suo You
PARA FORMALDEHYDE PRILLS(91,95) progress purified treatment has great importance under room temperature.
Purifying formaldehyde method has bioanalysis, physisorphtion, Ozonation, catalytic oxidation etc., at present using more
Be absorption method and photocatalytic method, physical absorption is absorption on porous media, and there are desorption phenomenons, and effect is poor, light
Catalyst depends on ultraviolet light, it is difficult to large-scale promotion.Meanwhile currently used gas filtering material itself lacks purifying formaldehyde
Function, cross air filtering while do not have remove formaldehyde performance.
Summary of the invention
It is an object of the invention to propose a kind of purifying formaldehyde material modification processes, there is simple process, obtain and can purify
The characteristics of filtering material of formaldehyde；
Another object of the present invention is to propose a kind of purifying formaldehyde material, there is purifying formaldehyde, purifying formaldehyde at room temperature
The high feature of rate；
Another object of the present invention is to propose that a kind of methanal decontamination plant has purifying formaldehyde, purifying formaldehyde rate at room temperature
High feature.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of purifying formaldehyde material modification processes, comprising the following steps:
(1), liquor potassic permanganate and manganese sulfate solution is respectively configured；
(2), conventional filter materials are put into manganese sulfate solution, manganese sulfate solution is made to be totally submerged conventional filter materials；
(3), liquor potassic permanganate is added in the manganese sulfate solution of step (2), is stirred to react；
(4), modified conventional filter materials after reaction, are taken out, it is dry, obtain purifying formaldehyde material, purifying formaldehyde material
Material is attached with manganese dioxide.
Further, in step (1), liquor potassic permanganate is aqueous solution, and the concentration of liquor potassic permanganate is 5 × 10- 3-1.9×10- 2g/ml；
Manganese sulfate solution adds water to configure by Manganous sulfate monohydrate, and the concentration of Manganous sulfate monohydrate is in manganese sulfate solution
3.75×10- 3-1.7×10- 2g/ml。
Further, in step (2) and step (3), conventional filter materials are stirred after being put into manganese sulfate solution,
Liquor potassic permanganate is added in the manganese sulfate solution stirred.
Further, when conventional filter materials are flaky material and length and width dimensions are 7~10cm, in step (2)
Mixing speed is 100~200rpm, and the mixing speed in step (3) is 400~600rpm.
Further, in step (3), the reaction temperature being stirred to react is 20~45 DEG C, and the reaction time is 5~7h.
Further, in step (4), dry temperature is 60~80 DEG C, and drying time is 12~16h.
Further, conventional filter materials are three vinylon and cotton blends or non-woven fabrics, in step (4), the fiber of purifying formaldehyde material
Surface is attached to be stamped manganese dioxide.
Further, in step (4), the load capacity of the manganese dioxide on purifying formaldehyde material is 6.0-23.0wt.%.
A kind of purifying formaldehyde material, purifying formaldehyde material use the purifying formaldehyde material modification of any one of claim 1-8
Technique is made.
A kind of methanal decontamination plant, the purifying formaldehyde material including support frame and claim 9, the installation of purifying formaldehyde material
In support frame.
The invention has the benefit that
The present invention is modified conventional filter materials by using liquor potassic permanganate and manganese sulfate solution, makes its load
Manganese dioxide, modified material have the function of stronger purifying formaldehyde, specifically, modified three vinylon and cotton blend is at room temperature
The purifying formaldehyde rate of product is up to 77% or more, the purifying formaldehyde rate of modified PET non-woven fabrics product at room temperature
Up to 48% or more.Present invention efficiently solves the function that conventional filter materials itself lack purifying formaldehyde, the modification materials
Material has good clean-up effect, and can be purified at room temperature, is conducive to large-scale promotion with oxidizing process purifying formaldehyde.This
The modified technique of invention is there are also simple process, the advantages that raw material is inexpensive, and preparation condition is mild, is easy to industrialization and the marketization.
Detailed description of the invention
Fig. 1 is the pictorial diagram of three vinylon and cotton blends of comparative example 1 of the present invention before modified, wherein (a) is the side of three vinylon and cotton blends, is (b)
The median fiber of three vinylon and cotton blends；
Fig. 2 is the pictorial diagram of modified three vinylon and cotton blend of the embodiment of the present invention 1；
Fig. 3 is the pictorial diagram of the PET non-woven fabrics of comparative example 2 of the present invention before modified；
Fig. 4 is the pictorial diagram of the modified PET non-woven fabrics of the embodiment of the present invention 3；
Fig. 5 is that the EDS of three vinylon and cotton blends of comparative example 1 of the present invention before modified schemes；
Fig. 6 is that the EDS of modified three vinylon and cotton blend of the embodiment of the present invention 1 schemes；
Fig. 7 is that the EDS of the PET non-woven fabrics of comparative example 2 of the present invention before modified schemes；
Fig. 8 is that the EDS of the modified PET non-woven fabrics of the embodiment of the present invention 3 schemes；
Fig. 9 is that the SEM of three vinylon and cotton blends (comparative example 1) of the embodiment of the present invention 1 before modified schemes；
Figure 10 is that the SEM of modified three vinylon and cotton blend of the embodiment of the present invention 1 schemes；
Figure 11 is the structural schematic diagram of methanal decontamination plant of the present invention.
Specific embodiment
Technical solution of the present invention is further illustrated With reference to embodiment.
Three vinylon and cotton blends are one kind of filter cotton, are widely used in a kind of conventional filter materials of air filtration, are mainly used for
The dust particle in air filtering is crossed, such as: PM2.5, and the three-dimensional structure of three vinylon and cotton blends has it than general two-dimentional filter cotton
Preferably elasticity and intensity.But the adsorption strength and adsorption capacity of three vinylon and cotton blends PARA FORMALDEHYDE PRILLS(91,95) itself are all very low, in the process of application
In the not no ability of purifying formaldehyde substantially.Therefore, being modified to three vinylon and cotton blends makes its newly-increased purifying formaldehyde function have great meaning
Justice.
PET non-woven fabrics is as a kind of environmentally protective conventional filtration material being prepared by orientation or random fiber
Material has cheap, ventilative, easy the features such as decomposing, is harmless, can be recycled, and is widely applied in air purification field.PET without
Woven fabric itself also has suction-operated without PARA FORMALDEHYDE PRILLS(91,95) substantially, the also not no ability of purifying formaldehyde during application.Therefore, right
PET non-woven fabrics, which is modified, makes its newly-increased purifying formaldehyde function also have very big realistic meaning.
Manganese dioxide has many advantages, such as that cost-effective, large specific surface area, absorption property are good and is easy to load and prepare, and
And manganese dioxide also has stronger oxidisability, redox reaction can occur with formaldehyde, by Formaldehyde decomposition at carbon dioxide and
Water is modified conventional filtration cotton so manganese dioxide can be used to be supported on conventional filtration cotton as active component, makes its tool
There is the ability of purifying formaldehyde at room temperature.
The present invention provides a kind of purifying formaldehyde material modification processes, comprising the following steps:
(1), liquor potassic permanganate and manganese sulfate solution is respectively configured；
(2), conventional filter materials are put into manganese sulfate solution, manganese sulfate solution is made to be totally submerged conventional filter materials；
(3), liquor potassic permanganate is added in the manganese sulfate solution of step (2), is stirred to react；
(4), modified conventional filter materials after reaction, are taken out, it is dry, obtain purifying formaldehyde material, purifying formaldehyde material
Material is attached with manganese dioxide.
Above-mentioned modified technique is to be completely immersed in conventional filter materials in manganese sulfate solution, and Gao Meng is added while agitating
Sour potassium solution can be such that the manganese dioxide generated is evenly affixed on conventional filter materials, and the purifying formaldehyde material of acquisition is attached with
This active material of manganese dioxide, makes it have the function of purifying formaldehyde.
Further, in step (1), liquor potassic permanganate is aqueous solution, and the concentration of liquor potassic permanganate is 5 × 10- 3-1.9×10- 2g/ml；
Manganese sulfate solution adds water to configure by Manganous sulfate monohydrate, and the concentration of Manganous sulfate monohydrate is in manganese sulfate solution
3.75×10- 3-1.7×10- 2g/ml。
In step (2) and (3), the potassium permanganate of addition and the molar ratio of Manganous sulfate monohydrate are 4:3.
By limiting the concentration of liquor potassic permanganate and manganese sulfate solution, and the proportion of two kinds of reactants of restriction, control
Reaction speed and manganese dioxide production quantity guarantee that the manganese dioxide generated can be attached to conventional filter materials, and realize uniformly, entirely
The attachment in orientation.
Further, in step (2) and step (3), conventional filter materials are stirred after being put into manganese sulfate solution,
Liquor potassic permanganate is added in the manganese sulfate solution stirred.It is reacted under stiring, can effectively prevent the two of generation
Manganese oxide is reunited, and stirring makes reaction solution and conventional filter materials while moving, and the manganese dioxide for being conducive to generate uniformly adheres to
In on conventional filter materials, and can be covered in the comprehensive of conventional filter materials.Association reaction liquid while being stirred to react
Concentration and reactant proportion, the manganese dioxide that can not only control generation is uniformly comprehensively attached to conventional filter materials,
The attachment consistency and adhesion amount of manganese dioxide can also be controlled, so that the purifying formaldehyde material obtained has preferable clean-up effect
And longer purification cycle.
Further, when conventional filter materials are flaky material and length and width dimensions are 7~10cm, in step (2)
Mixing speed is 100~200rpm, and the mixing speed in step (3) is 400~600rpm.
The shape and size for the conventional filter materials being modified are related with mixing speed when reacting, and make conventional filtration material
Material can be with the abundant making contact of reaction solution, and what the manganese dioxide of generation can be strong is attached to conventional filter materials, suitable to stir
Speed can guarantee that manganese dioxide is attached to conventional filter materials without being broken up by reaction solution with preferable consistency.
In actual production, the conventional filter materials of sheet are that material can have bigger length and width dimensions, for example, length and width reach
To 50-100cm, at this point, conventional filter materials are fixed in reactor tank, limit mixing speed in step (2) as 400~
500rpm, the mixing speed in step (3) is 600~800rpm, still can achieve above-mentioned effect.Work as conventional filter materials
The mixing speed of reaction solution is correspondinglyd increase when having biggish size.
Further, in step (3), the reaction temperature being stirred to react is 20~45 DEG C, and the reaction time is 5~7h.It is logical
The rate of manganese dioxide generation and the consistency of attachment can further be controlled by crossing the temperature that control is stirred to react, and control stirring is anti-
The time answered can further control the adhesion amount of manganese dioxide and the adequacy of reaction.
Further, in step (4), dry temperature is 60~80 DEG C, and drying time is 12~16h.Pass through setting
It is attached with drying temperature and the drying time of the conventional filter materials of manganese dioxide after reaction, it can be ensured that the dioxy of attachment
Change manganese in the drying process without denaturation phenomenon, and realizes sufficiently dry.
Also the conventional filter materials for being attached with manganese dioxide are filtered between drying steps, that is, are rinsed.
Further, conventional filter materials are three vinylon and cotton blends or non-woven fabrics, in step (4), the fiber of purifying formaldehyde material
Surface is attached to be stamped manganese dioxide.
Conventional filter materials of the invention use fiber-like filtering material, as glass fabric, three vinylon and cotton blends, non-woven fabrics, with
And using filtering material made of multiple fiber.It is thin that the fiber surface of the purifying formaldehyde material of acquisition is completely covered with manganese dioxide
Layer has very big contact area with gas when filtering, largely improves the purification speed and purifying rate of formaldehyde.
Further, in step (4), the load capacity of the manganese dioxide on purifying formaldehyde material is 6.0-23.0wt.%.
Reach 48% or more in the purifying formaldehyde rate of the purifying formaldehyde material of the manganese dioxide load amount, it might even be possible to reach 77%, it should
Purifying rate is higher than existing purifying formaldehyde material.
A kind of purifying formaldehyde material, purifying formaldehyde material are made using above-mentioned purifying formaldehyde material modification processes.The first
The manganese dioxide load amount of aldehyde scavenging material is 6.0-23.0wt.%, and the fiber surface of the purifying formaldehyde material is completely covered with
Manganese dioxide thin layer, purifying formaldehyde rate 48-77%.
A kind of methanal decontamination plant, including support frame and above-mentioned purifying formaldehyde material, purifying formaldehyde material is installed on branch
Support.The methanal decontamination plant can be portable, is used for small space purifying formaldehyde, can also be made large-scale, be used for
The large spaces purifying formaldehyde such as interior.
The present invention is further explained below by way of embodiments and drawings
Embodiment 1
A kind of purifying formaldehyde material modification processes of the present embodiment, comprising the following steps:
(1), add 80mL distilled water and 1.262g potassium permanganate into the beaker of a 100mL, in the burning of another 100mL
Add 80mL distilled water and 1.014g Manganous sulfate monohydrate in cup, is completely dissolved；
(2), manganese sulfate solution is poured into the beaker of 1000mL, is put into three vinylon and cotton blends (length and width and the thickness that total amount is 1.4834g
Degree: 7 × 7 × 0.5cm) and open stirring, revolving speed 100rpm；
(3), then liquor potassic permanganate is added rapidly in the manganese sulfate solution stirred again, is quickly stirred at 25 DEG C
Mix 6h, revolving speed 400rpm；
(4), three vinylon and cotton blends are taken out, filtering, dry 12h, obtains purifying formaldehyde material (Fig. 2) at 60 DEG C.
Fig. 2 show the pictorial diagram for the purifying formaldehyde material that the present embodiment obtains, due to being attached with manganese dioxide, so that three
The color of vinylon and cotton blend changes.In the purifying formaldehyde material that the present embodiment obtains, fiber surface is attached to be stamped manganese dioxide layer, and two
The load capacity of manganese oxide is 16.0wt.%.
The methanal decontamination plant of the present embodiment, including support frame and above-mentioned purifying formaldehyde material, purifying formaldehyde material peace
Loaded on support frame.
Embodiment 2
(1), add 80mL distilled water and 0.439g potassium permanganate into the beaker of a 100mL, in the burning of another 100mL
Add 80mL distilled water and 0.352g Manganous sulfate monohydrate in cup, is completely dissolved；
(2), manganese sulfate solution is poured into the beaker of 1000mL, is put into three vinylon and cotton blends (length and width and the thickness that total amount is 1.4794g
Degree: 7 × 7 × 0.5cm) and open stirring, revolving speed 100rpm；
(3), then liquor potassic permanganate is added rapidly in the manganese sulfate solution stirred again, is quickly stirred at 25 DEG C
6h, revolving speed 400rpm are mixed,
(4), three vinylon and cotton blends are taken out, dry 12h, obtains purifying formaldehyde material at 60 DEG C.
In the aldehyde scavenging material that the present embodiment obtains, fiber surface is attached to be stamped manganese dioxide layer, the load of manganese dioxide
Amount is 6.2wt.%.
The methanal decontamination plant of the present embodiment, including support frame and above-mentioned purifying formaldehyde material, purifying formaldehyde material peace
Loaded on support frame.
Embodiment 3
(1), add 80mL distilled water and 0.7059g potassium permanganate into the beaker of a 100mL, another 100mL's
Add 80mL distilled water and 0.5672g Manganous sulfate monohydrate in beaker, is completely dissolved；
(2), manganese sulfate solution is poured into the beaker of 1000mL, be put into total amount be 0.7124gPET non-woven fabrics (length and width and
Thickness: 7 × 7 × 0.1cm) and open stirring, revolving speed 100rpm；
(3), then liquor potassic permanganate is added rapidly in the manganese sulfate solution stirred again, is quickly stirred at 30 DEG C
Mix 6h, revolving speed 500rpm；
(4), PET non-woven fabrics is taken out, filtering, dry 12h, obtains purifying formaldehyde material at 70 DEG C.
Fig. 3 show the pictorial diagram for the purifying formaldehyde material that the present embodiment obtains, due to being attached with manganese dioxide, so that
The color of PET non-woven fabrics changes.In the purifying formaldehyde material that the present embodiment obtains, fiber surface is attached to be stamped manganese dioxide
Layer, the load capacity of manganese dioxide are 18.1wt.%.
The methanal decontamination plant of the present embodiment, including support frame and above-mentioned purifying formaldehyde material, purifying formaldehyde material peace
Loaded on support frame.
Embodiment 4
(1), add 80mL distilled water and 0.8126g potassium permanganate into the beaker of a 100mL, another 100mL's
Add 80mL distilled water and 0.6529g Manganous sulfate monohydrate in beaker, is completely dissolved；
(2), manganese sulfate solution is poured into the beaker of 1000mL, being put into total amount is 0.8299PET non-woven fabrics (length and width and thickness
Degree: 7 × 7 × 0.1cm) and open stirring, revolving speed 100rpm；
(3), then liquor potassic permanganate is added rapidly in the manganese sulfate solution stirred again, is quickly stirred at 30 DEG C
Mix 6h, revolving speed 500rpm；
(4), PET non-woven fabrics is taken out, filtering, dry 12h, obtains purifying formaldehyde material at 70 DEG C.
In the purifying formaldehyde material that the present embodiment obtains, fiber surface is attached to be stamped manganese dioxide layer, manganese dioxide
Load capacity is 23.0wt.%.
The methanal decontamination plant of the present embodiment, including support frame and above-mentioned purifying formaldehyde material, purifying formaldehyde material peace
Loaded on support frame.
Comparative example 1
Comparative example of the three non-modified vinylon and cotton blends as Examples 1 and 2 is taken, purifying formaldehyde aptitude tests are used for.Such as Fig. 1 institute
Show, Fig. 1 a is the macropore side of three non-modified vinylon and cotton blends, and Fig. 1 b is the median fiber of three non-modified vinylon and cotton blends.Three vinylon and cotton blends are by having
Machine fiber is made, and white is presented when being not added with pigment.
Comparative example 2
Comparative example of the non-modified PET non-woven fabrics as embodiment 3 and 4 is taken, purifying formaldehyde aptitude tests are used for.Such as figure
Shown in 3, white is presented when being not added with pigment in PET non-woven fabrics before modified.
The load capacity of above-described embodiment 1~4 is obtained according to the mass change of filtering material load front and back, load factor=
Filtering material quality × 100% after (filtering material quality before filtering material quality-load after load)/load.
The material for choosing embodiment 1, embodiment 3, comparative example 1 and comparative example 2 carries out EDS analysis (EDS:Energy respectively
The abbreviation of Dispersive Spectroscopy, i.e. energy dispersive spectrum, the analysis for the chemical component to sample), as a result see
Fig. 5~8.
By the EDS result of embodiment 1 and comparative example 1 it is found that more manganese elements in modified three vinylon and cotton blend, thus prove to change
Property after three vinylon and cotton blends on load have the active component of manganese dioxide.In conjunction with scanning electron microscope (SEM) analysis (see Fig. 9~
10) it can obtain, be completely covered substantially by manganese dioxide thin layer on the fiber on three vinylon and cotton blend surfaces after load.And embodiment 2 and implement
Example 1 is similar.
By the EDS result of embodiment 3 and comparative example 2 it is found that having known in modified PET non-woven fabrics manganese element more, by
This proves to load the active component for having manganese dioxide on modified PET non-woven fabrics.And embodiment 4 is similar to Example 3.
By the detection comparison and the comparison of embodiment 3 and comparative example 2 of embodiment 1 and comparative example 1, it is known that, using this hair
Bright method of modifying can make on manganese dioxide load to filtering material.
By the test of the progress purifying formaldehyde ability of the product of Examples 1 to 4 and comparative example 1~2 at room temperature, first
Each product is cut into suitably sized, be placed in portable formaldehyde purifier, is tested, ground in formaldehyde simulation fully sheathed case
Study carefully and air in closed box is sampled using intelligent air sampler, is detected in air using national standard phenol reagent process
Concentration of formaldehyde.As shown in figure 11, methanal decontamination plant is portable formaldehyde purifier 01, including support frame 02 and purifying formaldehyde
Material 03, purifying formaldehyde material 03 are installed on support frame 02.
Test result is shown in Table 1.
The purifying formaldehyde performance of 1 product of table at room temperature compares
Seen from table 1, at room temperature, two kinds of non-modified conventional filter materials do not have purifying formaldehyde function substantially, change
After property, the purifying formaldehyde rate of embodiment 1 is up to 77%, and the purifying formaldehyde rate of embodiment 2 is also up to 51%, and purifying formaldehyde performance ratio is not
Comparative example 1 through any processing is greatly improved；And the purifying formaldehyde rate of embodiment 3, up to 48%, the formaldehyde of embodiment 4 is net
Up to 34%, purifying formaldehyde performance improves rate than the comparative example 2 without any processing；As known from Table 1, with modification
Preceding conventional filter materials are compared, and the purifying formaldehyde function of modified conventional filter materials has biggish promotion, wherein from
From the point of view of the purifying rate of formaldehyde, the purifying formaldehyde effect ratio PET non-woven fabrics after the load of three vinylon and cotton blends is outstanding, this may be to load
The quality of the mass ratio PET non-woven fabrics of three vinylon and cotton blends used in process is high, and manganese dioxide is negative on three vinylon and cotton blends when correspondingly making to test
It is higher on the total mass ratio PET non-woven fabrics of load, so that the purifying formaldehyde rate of three vinylon and cotton blends is more preferable during the test.
The technical principle of the invention is described above in combination with a specific embodiment.These descriptions are intended merely to explain of the invention
Principle, and shall not be construed in any way as a limitation of the scope of protection of the invention.Based on the explanation herein, the technology of this field
Personnel can associate with other specific embodiments of the invention without creative labor, these modes are fallen within
Within protection scope of the present invention.
Claims (10)
1. a kind of purifying formaldehyde material modification processes, which comprises the following steps:
(1), liquor potassic permanganate and manganese sulfate solution is respectively configured；
(2), conventional filter materials are put into manganese sulfate solution, manganese sulfate solution is made to be totally submerged conventional filter materials；
(3), liquor potassic permanganate is added in the manganese sulfate solution of step (2), is stirred to react；
(4), modified conventional filter materials after reaction, are taken out, it is dry, obtain purifying formaldehyde material, the purifying formaldehyde material
Material is attached with manganese dioxide.
2. purifying formaldehyde material modification processes according to claim 1, which is characterized in that described in the step (1)
Liquor potassic permanganate is aqueous solution, and the concentration of the liquor potassic permanganate is 5 × 10- 3-1.9×10- 2g/ml；
The manganese sulfate solution adds water to configure by Manganous sulfate monohydrate, and Manganous sulfate monohydrate is dense in the manganese sulfate solution
Degree is 3.75 × 10- 3-1.7×10- 2g/ml。
3. purifying formaldehyde material modification processes according to claim 1, which is characterized in that in the step (2) and step
(3) in, conventional filter materials are stirred after being put into manganese sulfate solution, and liquor potassic permanganate is added to the sulfuric acid stirred
In manganese solution.
4. purifying formaldehyde material modification processes according to claim 3, which is characterized in that when conventional filter materials are sheet
When material and length and width dimensions are 7~10cm, the mixing speed in the step (2) is 100~200rpm, in the step
(3) mixing speed in is 400~600rpm.
5. purifying formaldehyde material modification processes according to claim 1, which is characterized in that in the step (3), stirring
The reaction temperature of reaction is 20~45 DEG C, and the reaction time is 5~7h.
6. purifying formaldehyde material modification processes according to claim 1, which is characterized in that dry in the step (4)
Temperature be 60~80 DEG C, drying time be 12~16h.
7. purifying formaldehyde material modification processes according to claim 1, which is characterized in that the conventional filter materials are three
Vinylon and cotton blend or non-woven fabrics, in the step (4), the fiber surface of purifying formaldehyde material is attached to be stamped manganese dioxide.
8. purifying formaldehyde material modification processes according to claim 1, which is characterized in that in the step (4), formaldehyde
The load capacity of manganese dioxide on scavenging material is 6.0-23.0wt.%.
9. a kind of purifying formaldehyde material, which is characterized in that the purifying formaldehyde material is described in any item using claim 1-8
Purifying formaldehyde material modification processes are made.
10. a kind of methanal decontamination plant, which is characterized in that including support frame and purifying formaldehyde material as claimed in claim 9, institute
It states purifying formaldehyde material and is installed on support frame.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109837737A (en) * | 2019-03-18 | 2019-06-04 | 温州优巴信息技术有限公司 | A kind of solid carbon dioxide base containing manganese dioxide nano-plates removes the preparation method of formaldehyde non-woven fabrics |
| CN112516787A (en) * | 2020-10-20 | 2021-03-19 | 俞春亚 | Indoor formaldehyde purification material and preparation method thereof |
| CN113578276A (en) * | 2021-07-26 | 2021-11-02 | 安徽科浦环保科技有限公司 | Preparation method of wide-temperature selective adsorption replacement desulfurization material |
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| CN112516787A (en) * | 2020-10-20 | 2021-03-19 | 俞春亚 | Indoor formaldehyde purification material and preparation method thereof |
| CN112516787B (en) * | 2020-10-20 | 2022-08-02 | 杭州博华科技创新有限公司 | Indoor formaldehyde purification material and preparation method thereof |
| CN113578276A (en) * | 2021-07-26 | 2021-11-02 | 安徽科浦环保科技有限公司 | Preparation method of wide-temperature selective adsorption replacement desulfurization material |
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