CN108654298A - A kind of preparation method of indoor formaldehyde high-efficiency adsorbent - Google Patents
A kind of preparation method of indoor formaldehyde high-efficiency adsorbent Download PDFInfo
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- CN108654298A CN108654298A CN201810219063.4A CN201810219063A CN108654298A CN 108654298 A CN108654298 A CN 108654298A CN 201810219063 A CN201810219063 A CN 201810219063A CN 108654298 A CN108654298 A CN 108654298A
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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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- 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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Abstract
The invention discloses a kind of preparation methods of indoor formaldehyde high-efficiency adsorbent comprising following steps：1) tealeaves, rice husk, buckwheat shell and the pinecone are crushed respectively；2) impurity is removed, is placed in oven and dried；3) pinecone of carbonization-activation will be obtained through the dried pinecone carbonization-activation of step 2)；4) it will be impregnated 2~5 hours through the dried rice husk of step 2) and buckwheat shell saturated sodium carbonate solution, and be air-dried after filtering, then carbonization-activation, obtain the rice husk and buckwheat shell of carbonization-activation；5) buckwheat shell through the dried tealeaves of step 2), the pinecone of carbonization-activation, the rice husk of carbonization-activation and carbonization-activation is uniformly mixed, obtains adsorbent.Adsorbent strong adsorption force, large amount of adsorption, the rate of the present invention is fast, at low cost, and raw material is the agriculture and forestry wastes such as discarded tealeaves, rice husk, buckwheat shell, the pinecone, and the absorption property of material and medical value are fully combined, and realizes recycling, turns waste into wealth.
Description
Technical field
The present invention relates to a kind of preparation methods of indoor formaldehyde high-efficiency adsorbent.
Background technology
With the forward step of modernization, people increasingly focus on the beautification and improvement of the environment such as room, office space, so
And the room air pollution that ornament materials etc. is brought often is ignored by people.It is investigated according to relevant environment mechanism of the U.S., it is most of
There are about 60%~90% times daily to spend indoors by people, and therefore, the good and bad of indoor air quality has very health
It is big to influence.Formaldehyde (HCHO) occupies China's toxic chemical priority acccess control list second as one of indoor major pollutants,
Seriously threaten the health of human body.Meanwhile Formaldehyde Pollution of Indoor Air has the characteristics that deenergized period is long, source is wide, endangers big, absorption method
Due to having many advantages, such as that low energy consumption, enrichment is stronger, easy to use, preferable to light concentration gas treatment effect, have become
The more commonly used means to purify the air of a room.
Determine that the key of absorption method effect quality is the performance quality of sorbent material.Common adsorbent manufacturing cost phase
To higher, adsorbance is smaller, and stability is not high, and in large-scale application, there are certain defects.In particular for indoor environment
When, higher is required to its adsorption efficiency, stability etc..In recent years, in the case of environmental problem and energy crisis getting worse,
Gradually goal in research is transferred to both at home and abroad and develops relatively inexpensive, effective new material, such as different kind organism material.Biology
Material not only has preferably absorption property, and materials are easy, source is wide, and agriculture and forestry waste material is just important one of biological raw material,
There is good developing foreground in terms of adsorption applications.
China is as agriculture and forestry big country, most agriculture and forestry waste material, a large amount of rice husks generated such as agricultural production, buckwheat shell
The forest trimmings such as a large amount of pinecones to wither and fall with the agricultural residues such as low-grade tea, tea dust and forestry applications, are by direct mostly
Burning or the approach processing arbitrarily abandoned, level of application is very low, and utility value is not yet fully developed, and not only causes resource unrestrained
Take, also polluted environment.
In recent years, it inquires into and finds in conjunction with domestic and international research and many experiments, part agriculture forestry waste such as tealeaves, rice husk, buckwheat
The rough surface such as shell, the pinecone, the substance containing cellular structures such as a large amount of celluloses, lignin and can provide oxygen-containing group
The substances such as terpene have certain absorption property.Meanwhile the agriculture forestry waste in this product contains all kinds of natural goods beneficial to human body
Matter has pharmacology value.Using such natural or processing agriculture and forestry waste material as indoor formaldehyde sorbing material, not only may be used
To realize recycling, turn waste into wealth, it can also environmental protection.
Invention content
The purpose of the present invention is to provide a kind of preparation methods of indoor formaldehyde high-efficiency adsorbent.
The technical solution used in the present invention is：
A kind of preparation method of indoor formaldehyde high-efficiency adsorbent, includes the following steps：
1) tealeaves, rice husk, buckwheat shell and the pinecone are crushed respectively；
2) impurity is removed, is respectively put into baking oven fully dry；
3) retort will be added through the dried pinecone of step 2), carbonization-activation obtains the pinecone of carbonization-activation；
4) it will be added in saturated sodium carbonate solution, impregnate 2~5 hours through the dried rice husk of step 2) and buckwheat shell,
It is air-dried after filtering, adds retort, carbonization-activation obtains the rice husk and buckwheat shell of carbonization-activation；
5) by the buckwheat through the dried tealeaves of step 2), the pinecone of carbonization-activation, the rice husk of carbonization-activation and carbonization-activation
Wheat husk is uniformly mixed, and obtains adsorbent.
Grain size through the broken tealeaves of step 1) and the pinecone is 3~10mm, the grain size of broken rice husk and buckwheat shell
For 2~5mm.
Step 1) the tealeaves is green tea, black tea, black tea, green tea (4~10) in mass ratio：(2~8)：(2~8)：(1~
6) mixture formed.
Step 1) the buckwheat shell is sweet cherry roots shell and duck wheat shell (2~4) in mass ratio：(1~3) mixing formed
Object.
Step 1) the pinecone is the wet-land pine tree pinecone, the masson pine pinecone, the Chinese pine pinecone (1~5) in mass ratio：(1~3)：
(1~3) mixture formed.
Drying temperature in step 2) is 100~120 DEG C, and drying time is 4~10 hours.
Carbonization-activation temperature in step 3) and step 4) is 300~600 DEG C, and the carbonization-activation time is 1~3 hour.
The pine of dried tealeaves, the rice husk of carbonization-activation, the buckwheat shell of carbonization-activation, carbonization-activation described in step 5)
The mass ratio of tower is (4~8)：(3~6)：(3~6)：(1~5).
The beneficial effects of the invention are as follows：
(1) formaldehyde adsorbent adsorption capacity of the invention is excellent, the rate of adsorption is fast, efficient, large amount of adsorption, a variety of materials
Synergistic effect it is efficiently apparent；
(2) formaldehyde adsorbent raw material of the invention is the agriculture and forestry wastes such as discarded tealeaves, rice husk, buckwheat shell, the pinecone, is filled
Divide and utilize its natural absorption property, realizes recycling, turn waste into wealth；
(3) heat treatment material quality accounting used by formaldehyde adsorbent of the invention is low, at a large amount of heat
Material is managed, cost is effectively reduced；
(4) material such as tealeaves, rice husk, buckwheat shell, the pinecone that the present invention chooses belong to natural prodcuts, contain catechu in tealeaves
The ingredients such as element, folic acid, tea polyphenols, buckwheat shell are rich in the trace elements such as vitamin and calcium, selenium, zinc, and the pinecone contains tannin and Huang
The polyphenols such as ketone, the tealeaves without charing process remain the beneficiating ingredient of tealeaves itself, rice husk, buckwheat through charing process
Wheat husk and the pinecone can fully improve its absorption property, and the absorption property of material and medical value are fully combined.
Specific implementation mode
A kind of preparation method of indoor formaldehyde high-efficiency adsorbent, includes the following steps：
1) tealeaves, rice husk, buckwheat shell and the pinecone are crushed respectively；
2) impurity is removed, is respectively put into baking oven fully dry；
3) retort will be added through the dried pinecone of step 2), carbonization-activation obtains the pinecone of carbonization-activation；
4) it will be added in saturated sodium carbonate solution, impregnate 2~5 hours through the dried rice husk of step 2) and buckwheat shell,
It is air-dried after filtering, adds retort, carbonization-activation obtains the rice husk and buckwheat shell of carbonization-activation；
5) by the buckwheat through the dried tealeaves of step 2), the pinecone of carbonization-activation, the rice husk of carbonization-activation and carbonization-activation
Wheat husk is uniformly mixed, and obtains adsorbent.
Preferably, the grain size through the broken tealeaves of step 1) and the pinecone is 3~10mm, broken rice husk and buckwheat shell
Grain size be 2~5mm.
Preferably, the step 1) tealeaves is green tea, black tea, black tea, green tea (4~10) in mass ratio：(2~8)：(2~
8)：(1~6) mixture formed.
Preferably, the step 1) buckwheat shell is sweet cherry roots shell and duck wheat shell (2~4) in mass ratio：(1~3) it forms
Mixture.
Preferably, the step 1) pinecone is the wet-land pine tree pinecone, the masson pine pinecone, the Chinese pine pinecone (1~5) in mass ratio：
(1~3)：(1~3) mixture formed.
Preferably, the drying temperature in step 2) is 100~120 DEG C, and drying time is 4~10 hours.
Preferably, the carbonization-activation temperature in step 3) and step 4) is 300~600 DEG C, and the carbonization-activation time is 1~3
Hour.
Preferably, tealeaves dried described in step 5), the rice husk of carbonization-activation, the buckwheat shell of carbonization-activation, charing
The mass ratio of the pinecone of activation is (4~8)：(3~6)：(3~6)：(1~5).
The present invention is made further explanation and description with reference to specific embodiment.
Embodiment 1：
1) it is 3~10mm tealeaves, the pinecone to be crushed to grain size respectively, and it is 2~5mm that rice husk, buckwheat shell, which are crushed to grain size,；
2) sand grains, the impurity such as stone are removed, 110 DEG C of drying 6 hours, taking-up cooled to room temperature are put into drying box；
3) retort, 450 DEG C of furnace temperature carbonization-activation 1.5 hours, natural cooling will be added through the dried pinecone of step 2)
To room temperature, the pinecone of carbonization-activation is obtained；
4) it will be added in saturated sodium carbonate solution and impregnate 2 hours through the dried rice husk of step 2) and buckwheat shell, and filter wind
It is dry, retort, 450 DEG C of furnace temperature carbonization-activation 1.5 hours are placed into, cooled to room temperature obtains the rice husk and buckwheat of carbonization-activation
Wheat husk；
5) pinecone through the dried tealeaves of step 2), the rice husk of carbonization-activation, the buckwheat shell of carbonization-activation, carbonization-activation
In mass ratio 4:3:3:1 is uniformly mixed, and obtains adsorbent.
Wherein, selected tealeaves includes green tea, black tea, black tea and green tea, mass ratio 4:2:2:1, the buckwheat of selection
Shell includes sweet cherry roots shell and duck wheat shell, mass ratio 2:1, the pinecone of selection includes the wet-land pine tree pinecone, the masson pine pinecone, Chinese pine
The pinecone, mass ratio 1:1:1.
Properties of product are tested：The material of test chamber is built and is run according in relevant national standard (GB50325-2010)
Condition requirement carries out adsorption test using the environment testing case of 96L (40cm × 40cm × 60cm), and temperature is 20.5 ± 0.4 DEG C,
Humidity is 50.1 ± 7.5%, adsorption production taken amount 16g.
After measured：When concentration of formaldehyde is 0.688 ± 0.060mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.65 ± 0.31 μ g/g from 0.688 ± 0.060mg/m3 of initial concentration in minute
Family standard (GBT18883-2002) 0.1mg/m3, about 130 minutes used times；
When concentration of formaldehyde is 0.338 ± 0.038mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.73 ± 0.41 μ g/g, by formaldehyde from 0.338 ± 0.038mg/m3 of initial concentration
0.1mg/m3, about 40 minutes used times.
Embodiment 2：
With the operating method of embodiment 1, the carbonization-activation condition of step 3) and step 4) is changed to：300 DEG C of carbonization-activations 3
Hour.
After measured：When concentration of formaldehyde is 0.720 ± 0.040mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.90 ± 0.41 μ g/g from 0.720 ± 0.040mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 140 minutes used times；
When concentration of formaldehyde is 0.298 ± 0.045mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.55 ± 0.34 μ g/g, by formaldehyde from 0.298 ± 0.045mg/m3 of initial concentration
0.1mg/m3, about 45 minutes used times.
Embodiment 3：
With the operating method of embodiment 1, the carbonization-activation condition of step 3) and step 4) is changed to：600 DEG C of carbonization-activations 1
Hour.
After measured：When concentration of formaldehyde is 0.680 ± 0.036mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.54 ± 0.52 μ g/g from 0.680 ± 0.036mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 145 minutes used times；
When concentration of formaldehyde is 0.322 ± 0.050mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.61 ± 0.25 μ g/g, by formaldehyde from 0.322 ± 0.050mg/m3 of initial concentration
0.1mg/m3, about 50 minutes used times.
Embodiment 4：
With the operating method of embodiment 1, the mass ratio of green tea, black tea, black tea, green tea is changed to 5:4:4:3, by step 2)
In drying condition be changed to：100 DEG C of dryings 10 hours.
After measured：When concentration of formaldehyde is 0.720 ± 0.070mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.78 ± 0.56 μ g/g from 0.720 ± 0.070mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 125 minutes used times；
When concentration of formaldehyde is 0.350 ± 0.060mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.84 ± 0.33 μ g/g, by formaldehyde from 0.350 ± 0.060mg/m3 of initial concentration
0.1mg/m3, about 43 minutes used times.
Embodiment 5：
With the operating method of embodiment 1, the mass ratio of green tea, black tea, black tea, green tea is changed to 7:5:5:3.
After measured：When concentration of formaldehyde is 0.660 ± 0.035mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.60 ± 0.65 μ g/g from 0.660 ± 0.035mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 125 minutes used times；
When concentration of formaldehyde is 0.330 ± 0.040mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.62 ± 0.32 μ g/g, by formaldehyde from 0.330 ± 0.040mg/m3 of initial concentration
0.1mg/m3, about 40 minutes used times.
Embodiment 6：
With the operating method of embodiment 1, the mass ratio of the wet-land pine tree pinecone, the masson pine pinecone, the Chinese pine pinecone is changed to 5:3:
3。
After measured：When concentration of formaldehyde is 0.750 ± 0.060mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 4.02 ± 0.58 μ g/g from 0.750 ± 0.060mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 120 minutes used times；
When concentration of formaldehyde is 0.370 ± 0.080mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.82 ± 0.30 μ g/g, by formaldehyde from 0.370 ± 0.080mg/m3 of initial concentration
0.1mg/m3, about 39 minutes used times.
Embodiment 7：
With the operating method of embodiment 1, the mass ratio of the wet-land pine tree pinecone, the masson pine pinecone, the Chinese pine pinecone is changed to 3:2:
2。
After measured：When concentration of formaldehyde is 0.756 ± 0.050mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 4.00 ± 0.60 μ g/g from 0.756 ± 0.050mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 130 minutes used times；
When concentration of formaldehyde is 0.354 ± 0.040mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.84 ± 0.49 μ g/g, by formaldehyde from 0.354 ± 0.040mg/m3 of initial concentration
0.1mg/m3, about 43 minutes used times.
Embodiment 8：
With the operating method of embodiment 1, the mass ratio of sweet cherry roots shell and duck wheat shell is changed to 4:3, it will be in step 2)
Drying condition is changed to：120 DEG C of dryings 4 hours.
After measured：When concentration of formaldehyde is 0.660 ± 0.035mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.46 ± 0.39 μ g/g from 0.660 ± 0.035mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 115 minutes used times；
When concentration of formaldehyde is 0.350 ± 0.040mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.81 ± 0.37 μ g/g, by formaldehyde from 0.350 ± 0.040mg/m3 of initial concentration
0.1mg/m3, about 50 minutes used times.
Embodiment 9：
With the operating method of embodiment 1, the mass ratio of sweet cherry roots shell and duck wheat shell is changed to 3:2.
After measured：When concentration of formaldehyde is 0.668 ± 0.030mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.49 ± 0.59 μ g/g from 0.668 ± 0.030mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 126 minutes used times；
When concentration of formaldehyde is 0.355 ± 0.040mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.88 ± 0.31 μ g/g, by formaldehyde from 0.355 ± 0.040mg/m3 of initial concentration
0.1mg/m3, about 46 minutes used times.
Embodiment 10：
With the operating method of embodiment 1, by the tealeaves of drying, the rice husk of carbonization-activation, the buckwheat shell of carbonization-activation, charing
The mass ratio of the pinecone of activation is changed to 8:6:6:5.
After measured：When concentration of formaldehyde is 0.685 ± 0.069mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.61 ± 0.36 μ g/g from 0.685 ± 0.069mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 126 minutes used times；
When concentration of formaldehyde is 0.326 ± 0.050mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.68 ± 0.23 μ g/g, by formaldehyde from 0.326 ± 0.050mg/m3 of initial concentration
0.1mg/m3, about 38 minutes used times.
Embodiment 11：
With the operating method of embodiment 1, by the tealeaves of drying, the rice husk of carbonization-activation, the buckwheat shell of carbonization-activation, charing
The mass ratio of the pinecone of activation is changed to 6:5:5:3.
After measured：When concentration of formaldehyde is 0.669 ± 0.032mg/m3, the efficient formaldehyde adsorbent of unit mass is 150
Formaldehyde is reduced to state by formaldehyde absorbing amount up to 3.49 ± 0.35 μ g/g from 0.669 ± 0.032mg/m3 of initial concentration in minute
Family standard 0.1mg/m3, about 120 minutes used times；
When concentration of formaldehyde is 0.330 ± 0.050mg/m3, the efficient formaldehyde adsorbent of the unit mass first in 120 minutes
Aldehyde adsorbance is reduced to national standard up to 1.69 ± 0.20 μ g/g, by formaldehyde from 0.330 ± 0.050mg/m3 of initial concentration
0.1mg/m3, about 35 minutes used times.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (6)
1. a kind of preparation method of indoor formaldehyde high-efficiency adsorbent, includes the following steps：
1) tealeaves, rice husk, buckwheat shell and the pinecone are crushed respectively；
2) impurity is removed, is respectively put into baking oven fully dry；
3) retort will be added through the dried pinecone of step 2), carbonization-activation obtains the pinecone of carbonization-activation；
4) it will be added in saturated sodium carbonate solution, impregnate 2~5 hours through the dried rice husk of step 2) and buckwheat shell, filtering
After air-dry, add retort, carbonization-activation obtains the rice husk and buckwheat shell of carbonization-activation；
5) by the buckwheat shell through the dried tealeaves of step 2), the pinecone of carbonization-activation, the rice husk of carbonization-activation and carbonization-activation
It is uniformly mixed, obtains adsorbent；
Step 1) the tealeaves is green tea, black tea, black tea, green tea (4~10) in mass ratio：(2~8)：(2~8)：(1~6) group
At mixture；Dried tealeaves described in step 5), the rice husk of carbonization-activation, the buckwheat shell of carbonization-activation, carbonization-activation
The pinecone mass ratio be (4~8)：(3~6)：(3~6)：(1~5).
2. preparation method according to claim 1, it is characterised in that：Grain size through step 1) broken tealeaves and the pinecone
For 3~10mm, the grain size of broken rice husk and buckwheat shell is 2~5mm.
3. preparation method according to claim 1, it is characterised in that：Step 1) the buckwheat shell is sweet cherry roots shell and bitter buckwheat
Wheat husk (2~4) in mass ratio：(1~3) mixture formed.
4. preparation method according to claim 1, it is characterised in that：Step 1) the pinecone is the wet-land pine tree pinecone, horse hair
Loosely tower, the Chinese pine pinecone (1~5) in mass ratio：(1~3)：(1~3) mixture formed.
5. preparation method according to claim 1, it is characterised in that：Drying temperature in step 2) is 100~120 DEG C,
Drying time is 4~10 hours.
6. preparation method according to claim 1, it is characterised in that：Carbonization-activation temperature in step 3) and step 4) is
300~600 DEG C, the carbonization-activation time is 1~3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810219063.4A CN108654298A (en) | 2018-03-16 | 2018-03-16 | A kind of preparation method of indoor formaldehyde high-efficiency adsorbent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810219063.4A CN108654298A (en) | 2018-03-16 | 2018-03-16 | A kind of preparation method of indoor formaldehyde high-efficiency adsorbent |
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| CN108654298A true CN108654298A (en) | 2018-10-16 |
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ID=63785233
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| CN201810219063.4A Pending CN108654298A (en) | 2018-03-16 | 2018-03-16 | A kind of preparation method of indoor formaldehyde high-efficiency adsorbent |
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2018
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