CN114307541A - Acid-resistant composite rotating wheel and preparation method and application thereof - Google Patents
Acid-resistant composite rotating wheel and preparation method and application thereof Download PDFInfo
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- CN114307541A CN114307541A CN202111658392.7A CN202111658392A CN114307541A CN 114307541 A CN114307541 A CN 114307541A CN 202111658392 A CN202111658392 A CN 202111658392A CN 114307541 A CN114307541 A CN 114307541A
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- 239000002253 acid Substances 0.000 title claims abstract description 93
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000012855 volatile organic compound Substances 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 22
- 239000003463 adsorbent Substances 0.000 claims description 34
- 238000001035 drying Methods 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000011230 binding agent Substances 0.000 claims description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 17
- 239000002808 molecular sieve Substances 0.000 claims description 16
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 16
- 238000001179 sorption measurement Methods 0.000 claims description 15
- 238000011068 loading method Methods 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 12
- 239000002657 fibrous material Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 150000007522 mineralic acids Chemical class 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 8
- 230000032683 aging Effects 0.000 claims description 7
- 239000003365 glass fiber Substances 0.000 claims description 7
- 239000003607 modifier Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000000741 silica gel Substances 0.000 claims description 6
- 229910002027 silica gel Inorganic materials 0.000 claims description 6
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
- 229910017604 nitric acid Inorganic materials 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 3
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 235000019353 potassium silicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 229910052723 transition metal Inorganic materials 0.000 claims description 2
- 150000003624 transition metals Chemical class 0.000 claims description 2
- 239000002274 desiccant Substances 0.000 claims 2
- 239000002594 sorbent Substances 0.000 claims 1
- 238000007791 dehumidification Methods 0.000 abstract description 9
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract description 7
- 229910000040 hydrogen fluoride Inorganic materials 0.000 abstract description 7
- 239000003792 electrolyte Substances 0.000 abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 description 9
- 238000011069 regeneration method Methods 0.000 description 9
- 239000000969 carrier Substances 0.000 description 5
- 238000003795 desorption Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 4
- YIXJRHPUWRPCBB-UHFFFAOYSA-N magnesium nitrate Chemical compound [Mg+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O YIXJRHPUWRPCBB-UHFFFAOYSA-N 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QDZRBIRIPNZRSG-UHFFFAOYSA-N titanium nitrate Chemical compound [O-][N+](=O)O[Ti](O[N+]([O-])=O)(O[N+]([O-])=O)O[N+]([O-])=O QDZRBIRIPNZRSG-UHFFFAOYSA-N 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 229910001963 alkali metal nitrate Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 230000002349 favourable effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000004323 potassium nitrate Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910002001 transition metal nitrate Inorganic materials 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to the technical field of dehumidification rotating wheels, in particular to an acid-resistant composite rotating wheel and a preparation method and application thereof. The acid-resistant composite rotating wheel comprises a shell, and an acid removal wheel and a multifunctional wheel which are arranged in the shell in series front and back, wherein the acid removal wheel can adsorb hydrogen fluoride gas generated by the decomposition of electrolyte in a lithium battery injection workshop, so that the acid corrosion of the dehumidification rotating wheel is avoided; the acid resistant composite wheel may also be used to treat acid containing VOCs.
Description
Technical Field
The invention relates to the technical field of dehumidification rotating wheels, in particular to an acid-resistant composite rotating wheel and a preparation method and application thereof.
Background
The temperature of a drying room of a lithium battery electrolyte injection workshop is usually kept at 20-25 ℃, and dewThe reason why the electrolyte contains LiPF is that the electrolyte is kept in an environment of absolutely dry when the temperature is below 40 ℃ below zero6When water is encountered, hydrogen fluoride gas is generated, so that the problems of shell bulging, thickness influence, incomplete SEI film formation and the like are caused, and the hydrogen fluoride serving as a strong corrosive gas can cause damage to the health of a person. Consequently need adopt low dew point runner dehumidification system to maintain the low dew point drying atmosphere who annotates the liquid workshop, in order to guarantee dehumidification efficiency, adopt the workshop return air when guaranteeing the new trend and supply, return air gas uses the dehumidification runner to carry out the drying repeatedly.
But hydrogen fluoride gas has strong corrosivity to the dehumidification runner, reduces adsorption efficiency when reducing runner intensity, and for no hydrogen fluoride workshop at present, the dehumidification runner life in notes liquid workshop falls to about 2 years from 5 years, needs often to change the runner or chooses for use thicker runner, leads to equipment input and running cost to increase.
Disclosure of Invention
The invention aims to provide an acid-resistant composite rotating wheel which can adsorb hydrogen fluoride gas generated by decomposition of electrolyte in a lithium battery electrolyte injection workshop and avoid the dehumidification rotating wheel from being corroded by acid; and can also be used to treat acid-containing VOCs.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
an acid-resistant composite rotating wheel comprises a shell, and an acid removing wheel and a multifunctional wheel which are arranged in the shell in series.
The acid removal wheel comprises a carrier and an acid adsorbent, wherein the acid adsorbent comprises modified alumina.
The multifunctional wheel comprises a carrier and an adsorbent, the adsorbent comprises a dehumidifying material and/or a VOCs adsorbent, the dehumidifying material comprises a hydrophilic molecular sieve or silica gel, and the VOCs adsorbent comprises a VOCs adsorption molecular sieve.
The carrier comprises a fibrous material, the carrier having a corrugated structure;
preferably, the fiber material comprises glass fibers, ceramic fibers or activated carbon fibers.
The acid-containing gas sequentially passes through the acid removing wheel and the multifunctional wheel, the acid removing wheel and the multifunctional wheel rotate at the same rotating speed, the acid removing wheel adsorbs acid in the gas, and acid corrosion of the subsequent multifunctional wheel is reduced. High-temperature desorption regeneration gas containing water vapor sequentially passes through the multifunctional wheel and the deacidification wheel in the regeneration area, the multifunctional wheel adsorbs the water vapor in the regeneration gas, and relatively dry gas enters the deacidification wheel to regenerate the multifunctional wheel and the deacidification wheel. According to actual needs, the thickness proportion of the acid removing wheel and the multifunctional wheel can be adjusted.
The invention also provides a preparation method of the acid-resistant composite rotating wheel, which comprises the following steps:
s1: preparing a fiber material into a corrugated shape, impregnating an inorganic binder, drying and roasting to obtain a carrier;
further, the fiber material comprises glass fiber, ceramic fiber or activated carbon fiber;
the inorganic binder I comprises silica sol, aluminum sol or water glass
S2: mixing 0.1-30 parts by mass of an inorganic binder II, 10-100 parts by mass of a deacidification adsorbent, 0.1-10 parts by mass of an inorganic acid and 50-200 parts by mass of water, stirring and aging to obtain a deacidification mixed solution, loading the deacidification mixed solution on the carrier obtained in the step S1, drying and roasting, soaking the roasted carrier loaded with the deacidification mixed solution into a solution containing 0.1-10 parts by mass of a modifier, and drying and roasting to obtain a deacidification wheel;
preferably, the second inorganic binder is 10-20 parts by mass, the adsorbent is 40-60 parts by mass, the inorganic acid is 1-5 parts by mass, and the water is 100-150 parts by mass;
the inorganic binder II comprises pseudo-boehmite;
the adsorbent comprises activated alumina;
the inorganic acid comprises nitric acid or hydrochloric acid;
the modifier solution comprises a nitrate solution of an alkali metal, an alkaline earth metal or a transition metal;
preferably, the modifier comprises one or more of sodium nitrate, potassium nitrate, calcium nitrate, zinc nitrate, magnesium nitrate, ferric nitrate and titanium nitrate.
The adsorbent in the deacidification wheel adopts pseudo-boehmite as a precursor of alumina, is cheap and easy to obtain, does not need to additionally increase a binder, and improves the load of effective components; the adsorbent in the deacidification wheel is modified by alkali metal or transition metal nitrate, so that the specific surface area is increased, the acid gas adsorption sites are increased, the rotating wheel has both physical adsorption and chemical adsorption, and the single adsorption capacity can be effectively improved after modification.
S3: uniformly mixing 0.1-100 parts by mass of an adsorbent, 0.5-20 parts by mass of an inorganic binder III and 50-200 parts by mass of water, loading the mixture on the carrier obtained in the step S1, and drying and roasting the mixture to obtain a multifunctional wheel;
preferably, the adsorbent is 20-50 parts by mass, the inorganic binder is 1-10 parts by mass, and the water is 100-150 parts by mass;
the adsorbent comprises a dehumidifying material and/or a VOCs adsorbent, the dehumidifying material comprises a hydrophilic molecular sieve or silica gel, and the VOCs adsorbent comprises a VOCs adsorption molecular sieve;
the inorganic binder III comprises silica sol or aluminum sol.
S4: and aligning and splicing corrugated orifices of the acid removing wheel and the multifunctional wheel, coating a shell, and finishing end face curing by paint dipping or end face paint spraying to obtain the acid-resistant composite runner.
The invention also provides the application of the acid-proof composite rotating wheel in drying acid-containing gas and the application in treating acid-containing VOCs, and the multifunctional wheel uses a mixture of a dehumidifying material and a VOCs adsorbent as an adsorbent, so that the multifunctional wheel has the functions of adsorbing water vapor and adsorbing and concentrating VOCs; the acid removing wheel is connected in series, corrosion of acid type substances to the multifunctional wheel can be avoided, the pretreatment process of water washing or alkali washing used for conventional treatment of acid-containing VOCs can be replaced, generation of acid-containing wastewater is reduced, and reduction of adsorption performance of the rotating wheel to the VOCs due to increase of waste gas humidity caused by water washing or alkali washing is avoided.
Compared with the prior art, the invention has the following advantages:
(1) the inorganic acid has low boiling point and small kinetic diameter, and is difficult to filter and remove by a front-end filter screen, the adsorbent structure of the conventional dehumidifying rotating wheel can be damaged by the inorganic acid, so that the adsorption capacity is reduced, and the performance of the rotating wheel is attenuated.
(2) The acid removing wheel provided by the invention uses a solid adsorbent, belongs to dry adsorption, does not introduce water vapor, avoids performance fluctuation of a subsequent multifunctional wheel during drying or treating VOCs, desorption hot air sequentially passes through the multifunctional wheel and the acid removing wheel, the two rotating wheels can be regenerated, desorption gas entering the multifunctional wheel is hot air containing water vapor, and the increase of humidity is favorable for improving HF regeneration efficiency of the acid removing wheel.
(3) When the acid-resistant composite rotating wheel provided by the invention is used in a lithium battery liquid injection workshop, hydrogen fluoride gas can be effectively adsorbed, the service life of the rotating wheel is prolonged, and the fluctuation of workshop dew point caused by water vapor introduced by wet-method deacidification is avoided.
Drawings
FIG. 1 is a schematic structural view of an acid-resistant composite runner according to the present invention;
FIG. 2 is a cross-sectional view of the acid resistant composite runner of the present invention;
FIG. 3 is a diagram of the process of the present invention.
Wherein: 1-deacidification wheel, 2-multifunctional wheel, 3-acid-containing gas to be dehumidified, 4-high temperature desorption regeneration gas and 5-heater.
Detailed Description
The terms as used herein:
"prepared from … …" is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when the range "1 ~ 5" is disclosed, the ranges described should be construed to include the ranges "1 ~ 4", "1 ~ 3", "1 ~ 2 and 4 ~ 5", "1 ~ 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
"and/or" is used to indicate that one or both of the illustrated conditions may occur, e.g., a and/or B includes (a and B) and (a or B).
The technical solutions of the present invention will be described in detail with reference to specific examples, but those skilled in the art will understand that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention.
Example 1
Referring to fig. 1 and 2, the acid-proof composite rotating wheel comprises a shell and an acid removing wheel and a multifunctional wheel which are arranged in the shell in series.
The acid removing wheel comprises a glass fiber carrier with a corrugated structure and modified alumina.
The multifunctional wheel comprises a glass fiber carrier with a corrugated structure and a molecular sieve.
The preparation method of the acid-resistant composite rotating wheel comprises the following steps:
s1: preparing a glass fiber material into a corrugated shape, soaking silica sol, drying and roasting to obtain a carrier;
s2: stirring and aging 1 part by mass of pseudo-boehmite, 30 parts by mass of activated alumina, 5 parts by mass of nitric acid and 100 parts by mass of water, loading the mixture on the carrier obtained in the step S1, drying and roasting the carrier, soaking the carrier into a solution containing 5 parts by mass of magnesium nitrate, and drying and roasting the carrier to obtain an acid removing wheel;
s3: uniformly mixing 50 parts by mass of a molecular sieve, 1 part by mass of silica sol and 50 parts by mass of water, loading the mixture onto the carrier obtained in the step S1, and drying and roasting to obtain a multifunctional wheel;
s4: and aligning and splicing corrugated openings of the carriers except the acid wheel and the multifunctional wheel, covering a shell, and solidifying and completing the splicing of end faces to obtain the acid-resistant composite runner.
Referring to fig. 3, the working process of this embodiment is as follows, according to the humidity and acid concentration of the dehumidified gas, the thickness ratio and total thickness of the acid-removing wheel and the multifunctional wheel are designed and adjusted, and according to the working condition and the operation condition, the parameters of the rotating speed and the regeneration temperature are adjusted at the right moment. The acid-containing gas 3 to be dehumidified sequentially passes through the acid-removing wheel 1 and the multifunctional wheel 2, the acid-removing wheel 1 and the multifunctional wheel 2 rotate at the same rotating speed, the acid-removing wheel 1 adsorbs acid in the acid-containing gas 3 to be dehumidified, and acid corrosion of the subsequent multifunctional wheel 2 is reduced. The temperature of the air is raised to 100-200 ℃ after passing through the heater 5, and the high-temperature desorption regeneration gas 4 sequentially passes through the multifunctional wheel 2 and the deacidification wheel 1 in the regeneration area to regenerate the regeneration area.
Example 2
An acid-resistant composite rotating wheel comprises a shell, and an acid removing wheel and a multifunctional wheel which are arranged in the shell in series.
The acid removing wheel comprises a ceramic fiber carrier with a corrugated structure and modified alumina.
The multifunctional wheel comprises a ceramic fiber carrier with a corrugated structure and a VOCs adsorption molecular sieve.
The preparation method of the acid-resistant composite rotating wheel comprises the following steps:
s1: preparing a ceramic fiber material into a corrugated shape, impregnating alumina sol, drying and roasting to obtain a carrier;
s2: stirring and aging 10 parts by mass of pseudo-boehmite, 50 parts by mass of activated alumina, 10 parts by mass of hydrochloric acid and 200 parts by mass of water, loading the mixture on the carrier obtained in the step S1, drying and roasting the carrier, soaking the carrier into a solution containing 1 part by mass of zinc nitrate, and drying and roasting the carrier to obtain an acid removing wheel;
s3: uniformly mixing 100 parts by mass of hydrophobic VOCs adsorption molecular sieve, 10 parts by mass of silica sol and 200 parts by mass of water, loading the mixture onto the carrier obtained in the step S1, and drying and roasting to obtain a multifunctional wheel;
s4: and aligning and splicing corrugated openings of the carriers except the acid wheel and the multifunctional wheel, covering a shell, and solidifying and completing the splicing of end faces to obtain the acid-resistant composite runner.
Example 3
An acid-resistant composite rotating wheel comprises a shell, and an acid removing wheel and a multifunctional wheel which are arranged in the shell in series.
The acid removing wheel comprises a ceramic fiber carrier with a corrugated structure and modified alumina.
The multifunctional wheel comprises a ceramic fiber carrier with a corrugated structure and silica gel.
The preparation method of the acid-resistant composite rotating wheel comprises the following steps:
s1: preparing a ceramic fiber material into a corrugated shape, impregnating an inorganic binder, drying and roasting to obtain a carrier;
s2: stirring and aging 30 parts by mass of pseudo-boehmite, 100 parts by mass of activated alumina, 1 part by mass of nitric acid and 50 parts by mass of water, loading the mixture on the carrier obtained in the step S1, drying and roasting the carrier, soaking the carrier into a solution containing 10 parts by mass of aluminum nitrate, and drying and roasting the carrier to obtain an acid removing wheel;
s3: uniformly mixing 10 parts by mass of silica gel, 20 parts by mass of silica sol and 100 parts by mass of water, loading the mixture on the carrier obtained in the step S1, and drying and roasting the mixture to obtain the multifunctional wheel;
s4: and aligning and splicing corrugated openings of the carriers except the acid wheel and the multifunctional wheel, covering a shell, and solidifying and completing the splicing of end faces to obtain the acid-resistant composite runner.
Example 4
An acid-resistant composite rotating wheel comprises a shell, and an acid removing wheel and a multifunctional wheel which are arranged in the shell in series.
The acid removing wheel comprises an activated carbon fiber carrier with a corrugated structure and modified alumina.
The multifunctional wheel comprises an activated carbon fiber carrier with a corrugated structure and a molecular sieve.
The preparation method of the acid-resistant composite rotating wheel comprises the following steps:
s1: preparing a ceramic fiber material into a corrugated shape, impregnating an inorganic binder, drying and roasting to obtain a carrier;
s2: stirring and aging 5 parts by mass of pseudo-boehmite, 10 parts by mass of activated alumina, 3 parts by mass of hydrochloric acid and 150 parts by mass of water, loading the mixture on the carrier obtained in the step S1, drying and roasting the carrier, soaking the carrier into a solution containing 0.1 part by mass of ferric nitrate, and drying and roasting the carrier to obtain an acid removing wheel;
s3: uniformly mixing 30 parts by mass of VOCs adsorption molecular sieve, 5 parts by mass of alumina sol and 150 parts by mass of water, loading the mixture onto the carrier obtained in the step S1, and drying and roasting to obtain a multifunctional wheel;
s4: and aligning and splicing corrugated openings of the carriers except the acid wheel and the multifunctional wheel, covering a shell, and solidifying and completing the splicing of end faces to obtain the acid-resistant composite runner.
Example 5
An acid-resistant composite rotating wheel comprises a shell, and an acid removing wheel and a multifunctional wheel which are arranged in the shell in series.
The acid removing wheel comprises an activated carbon fiber carrier with a corrugated structure and modified alumina.
The multifunctional wheel comprises an activated carbon fiber carrier with a corrugated structure and a molecular sieve.
The preparation method of the acid-resistant composite rotating wheel comprises the following steps:
s1: preparing a ceramic fiber material into a corrugated shape, impregnating an inorganic binder, drying and roasting to obtain a carrier;
s2: stirring and aging 15 parts by mass of pseudo-boehmite, 60 parts by mass of activated alumina, 0.1 part by mass of nitric acid and 120 parts by mass of water, loading the mixture on the carrier obtained in the step S1, drying and roasting the carrier, soaking the carrier into a solution containing 3 parts by mass of sodium nitrate, and drying and roasting the carrier to obtain an acid removing wheel;
s3: uniformly mixing 80 parts by mass of a hydrophilic molecular sieve, 15 parts by mass of alumina sol and 80 parts by mass of water, loading the mixture onto the carrier obtained in the step S1, and drying and roasting to obtain a multifunctional wheel;
s4: and aligning and splicing corrugated openings of the carriers except the acid wheel and the multifunctional wheel, covering a shell, and solidifying and completing the splicing of end faces to obtain the acid-resistant composite runner.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (10)
1. The acid-resistant composite rotating wheel comprises a shell and is characterized by further comprising an acid removing wheel and a multifunctional wheel which are arranged in the shell in series front and back.
2. The wheel of claim 1 wherein the acid removal wheel comprises a support and an acid sorbent comprising a modified alumina.
3. The rotor of claim 1, wherein the multi-function wheel includes a carrier and an adsorbent, the adsorbent including desiccant material and/or VOCs adsorbent;
preferably, the dehumidifying material comprises a hydrophilic molecular sieve or silica gel, and the VOCs adsorbent comprises a VOCs adsorption molecular sieve.
4. The runner of claim 2 or 3, wherein the carrier has a corrugated structure, the carrier comprising a fibrous material;
preferably, the fiber material comprises glass fibers, ceramic fibers or activated carbon fibers.
5. The preparation method of the acid-resistant composite rotating wheel is characterized by comprising the following steps of:
s1: preparing a fiber material into a corrugated shape, impregnating an inorganic binder, drying, and roasting to obtain a carrier;
s2: mixing and stirring the inorganic binder II, the deacidification adsorbent, the inorganic acid and water, aging to obtain a deacidification mixed solution, loading the deacidification mixed solution on the carrier obtained in the step S1, drying and roasting; then soaking the carrier loaded with the deacidification mixed solution into a modifier solution, drying and roasting to prepare a deacidification wheel;
s3: uniformly mixing the adsorbent, the inorganic binder III and water, loading the mixture on the carrier obtained in the step S1, and drying and roasting to obtain the multifunctional wheel;
s4: and aligning and splicing corrugated orifices of the acid removing wheel and the multifunctional wheel, coating a shell, and finishing end face curing by paint dipping or end face paint spraying to obtain the acid-resistant composite runner.
6. The method according to claim 5, wherein step S1 satisfies one or more of the following conditions:
a. the fiber material comprises glass fiber, ceramic fiber or activated carbon fiber;
b. the inorganic binder I comprises silica sol, aluminum sol or water glass.
7. The method according to claim 5, wherein step S2 satisfies one or more of the following conditions:
c. the inorganic binder II comprises pseudo-boehmite;
d. the acid removal adsorbent comprises activated alumina;
e. the inorganic acid comprises nitric acid or hydrochloric acid;
f. 0.1-30 parts by mass of an inorganic binder II, 10-100 parts by mass of an adsorbent, 0.1-10 parts by mass of an inorganic acid and 50-200 parts by mass of water;
preferably, the second inorganic binder is 10-20 parts by mass, the adsorbent is 40-60 parts by mass, the inorganic acid is 1-5 parts by mass, and the water is 100-150 parts by mass;
g. the modifier solution comprises a nitrate solution of an alkali metal, an alkaline earth metal or a transition metal;
h. 0.1-10 parts by mass of a modifier;
preferably, the modifier is 1-5 parts by mass.
8. The method according to claim 5, wherein step S3 satisfies one or more of the following conditions:
i. the adsorbent comprises a desiccant material and/or a VOCs adsorbent,
preferably, the dehumidifying material comprises hydrophilic molecular sieve or silica gel; the VOCs adsorbent comprises a VOCs adsorption molecular sieve;
j. the inorganic binder III comprises silica sol or aluminum sol;
k. 0.1-100 parts by mass of an adsorbent, 0.5-20 parts by mass of a third inorganic binder and 50-200 parts by mass of water;
preferably, the adsorbent is 20-50 parts by mass, the inorganic binder is 1-10 parts by mass, and the water is 100-150 parts by mass.
9. Use of the acid-resistant composite wheel of any one of claims 1 to 4 for drying acid-containing gases.
10. Use of the acid-resistant composite wheel of any one of claims 1 to 4 for treating acid-containing VOCs.
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