CN112371084A - Preparation method and application of sterilized activated carbon - Google Patents
Preparation method and application of sterilized activated carbon Download PDFInfo
- Publication number
- CN112371084A CN112371084A CN202011122371.9A CN202011122371A CN112371084A CN 112371084 A CN112371084 A CN 112371084A CN 202011122371 A CN202011122371 A CN 202011122371A CN 112371084 A CN112371084 A CN 112371084A
- Authority
- CN
- China
- Prior art keywords
- metal oxide
- base carbon
- carbon
- nano metal
- activated carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 371
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 205
- 239000007788 liquid Substances 0.000 claims abstract description 118
- 239000006185 dispersion Substances 0.000 claims abstract description 85
- 238000002791 soaking Methods 0.000 claims abstract description 80
- 238000001035 drying Methods 0.000 claims abstract description 78
- 238000002156 mixing Methods 0.000 claims abstract description 73
- 238000003756 stirring Methods 0.000 claims abstract description 69
- 230000018044 dehydration Effects 0.000 claims abstract description 53
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 53
- 238000005470 impregnation Methods 0.000 claims abstract description 41
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims abstract description 23
- 238000005469 granulation Methods 0.000 claims abstract description 22
- 230000003179 granulation Effects 0.000 claims abstract description 22
- 230000001954 sterilising effect Effects 0.000 claims abstract description 17
- 230000032683 aging Effects 0.000 claims abstract description 14
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 13
- 238000005303 weighing Methods 0.000 claims abstract description 13
- 230000003213 activating effect Effects 0.000 claims abstract description 11
- 229910044991 metal oxide Inorganic materials 0.000 claims description 145
- 150000004706 metal oxides Chemical class 0.000 claims description 142
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 103
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 101
- 239000000243 solution Substances 0.000 claims description 72
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 54
- 239000002245 particle Substances 0.000 claims description 46
- 239000012266 salt solution Substances 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 32
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 28
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 27
- 239000000853 adhesive Substances 0.000 claims description 23
- 230000001070 adhesive effect Effects 0.000 claims description 23
- 239000004094 surface-active agent Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 16
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical group [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 15
- 229940116318 copper carbonate Drugs 0.000 claims description 14
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 claims description 14
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 13
- 239000001099 ammonium carbonate Substances 0.000 claims description 13
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 13
- 229910021641 deionized water Inorganic materials 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 13
- 238000009423 ventilation Methods 0.000 claims description 13
- -1 ventilation systems Substances 0.000 claims description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 10
- JBIROUFYLSSYDX-UHFFFAOYSA-M benzododecinium chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 JBIROUFYLSSYDX-UHFFFAOYSA-M 0.000 claims description 10
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 claims description 10
- NGDQQLAVJWUYSF-UHFFFAOYSA-N 4-methyl-2-phenyl-1,3-thiazole-5-sulfonyl chloride Chemical compound S1C(S(Cl)(=O)=O)=C(C)N=C1C1=CC=CC=C1 NGDQQLAVJWUYSF-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- NFSAPTWLWWYADB-UHFFFAOYSA-N n,n-dimethyl-1-phenylethane-1,2-diamine Chemical compound CN(C)C(CN)C1=CC=CC=C1 NFSAPTWLWWYADB-UHFFFAOYSA-N 0.000 claims description 9
- 150000003746 yttrium Chemical class 0.000 claims description 9
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 5
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 3
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 3
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 229940116411 terpineol Drugs 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- YFDKVXNMRLLVSL-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid;sodium Chemical compound [Na].CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O YFDKVXNMRLLVSL-UHFFFAOYSA-N 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 abstract description 36
- 241000894006 Bacteria Species 0.000 abstract description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 14
- 239000001301 oxygen Substances 0.000 abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 abstract description 14
- 238000005286 illumination Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 29
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 27
- 230000000694 effects Effects 0.000 description 25
- 239000000126 substance Substances 0.000 description 20
- 230000004913 activation Effects 0.000 description 19
- 239000011148 porous material Substances 0.000 description 10
- 230000007123 defense Effects 0.000 description 8
- 241000700605 Viruses Species 0.000 description 6
- 238000009835 boiling Methods 0.000 description 6
- HRYZWHHZPQKTII-UHFFFAOYSA-N chloroethane Chemical compound CCCl HRYZWHHZPQKTII-UHFFFAOYSA-N 0.000 description 6
- QPJDMGCKMHUXFD-UHFFFAOYSA-N cyanogen chloride Chemical compound ClC#N QPJDMGCKMHUXFD-UHFFFAOYSA-N 0.000 description 6
- 229960003750 ethyl chloride Drugs 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000004887 air purification Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 231100000331 toxic Toxicity 0.000 description 5
- 230000002588 toxic effect Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 4
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- 239000002341 toxic gas Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910052727 yttrium Inorganic materials 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 3
- 206010052428 Wound Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 244000052616 bacterial pathogen Species 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000011246 composite particle Substances 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011941 photocatalyst Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 239000003440 toxic substance Substances 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- AIQRTHPXPDTMBQ-UHFFFAOYSA-K yttrium(3+);triacetate;tetrahydrate Chemical group O.O.O.O.[Y+3].CC([O-])=O.CC([O-])=O.CC([O-])=O AIQRTHPXPDTMBQ-UHFFFAOYSA-K 0.000 description 2
- 244000060011 Cocos nucifera Species 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 244000018633 Prunus armeniaca Species 0.000 description 1
- 235000009827 Prunus armeniaca Nutrition 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 206010048038 Wound infection Diseases 0.000 description 1
- 240000008866 Ziziphus nummularia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- PRKQVKDSMLBJBJ-UHFFFAOYSA-N ammonium carbonate Chemical group N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000009298 carbon filtering Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 229910001430 chromium ion Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- YRIUSKIDOIARQF-UHFFFAOYSA-N dodecyl benzenesulfonate Chemical compound CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 YRIUSKIDOIARQF-UHFFFAOYSA-N 0.000 description 1
- 229940071161 dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000001782 photodegradation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- QBAZWXKSCUESGU-UHFFFAOYSA-N yttrium(3+);trinitrate;hexahydrate Chemical group O.O.O.O.O.O.[Y+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O QBAZWXKSCUESGU-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
- B01J20/205—Carbon nanostructures, e.g. nanotubes, nanohorns, nanocones, nanoballs
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0233—Compounds of Cu, Ag, Au
- B01J20/0237—Compounds of Cu
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- B01J35/39—
Abstract
The invention discloses a preparation method of sterilized activated carbon, which comprises the steps of weighing the base carbon according to the mass, placing the base carbon in a dispersion liquid, dispersing by ultrasonic or stirring, standing and soaking for 0.5-1h, adding a pre-configured impregnation liquid, uniformly mixing, soaking for 10-20 h, carrying out vacuum centrifugal drying and dehydration and cooling at 100-120 ℃, then carrying out granulation molding, finally drying and activating an active base carbon mixture subjected to granulation molding in high-temperature hot air at 110-140 ℃ for 2-5 h, cooling to 30-40 ℃, and then aging for more than 8h at 50-60 ℃ to obtain a sterilized activated carbon finished product. The sterilized activated carbon prepared by the invention has high-capacity adsorption capacity, sterilization performance and protection performance, and good stability, and can activate oxygen in the air to change the oxygen into active oxygen to kill bacteria and eliminate peculiar smell under illumination or ultraviolet irradiation.
Description
Technical Field
The invention belongs to the technical field of civil air defense air purification and adsorption materials, and particularly relates to a preparation method and application of sterilization activated carbon.
Background
Along with the rapid development of national economy and the change of international situation, the national defense construction is continuously strengthened, and the quality of ventilation air in underground parking lots, civil air defense projects, underground passages, densely populated public places and buildings and cabins of various transportation and transportation tools is closely related to the health, life safety and physical exertion of human bodies, and the performances of weaponry, instruments and meters; especially in the civil air defense engineering facilities, these civil air defense facilities are public safety buildings constructed for dealing with special environments such as wartime, disaster time, etc., the system is complex, the structure is tight, the special environments of wartime, disaster time need to be fully considered when designing and constructing, a special ventilation system is required, the air filtering equipment is an essential component in the civil air defense ventilation system, harmful gas in the civil air defense ventilation system can be accompanied with various hazards such as bacteria, toxicity, irritation, corrosive substances, etc., therefore, the ventilation system is required to be capable of effectively filtering harmful substances such as bacteria, toxic smoke, radioactive dust, etc. in the polluted air, and clean air after filtering is provided for personnel in the civil air defense engineering; therefore, in the war time, the air is diffused with smoke and the harmful substances in the air must be removed to ensure the life safety of the personnel, so the air filtering equipment is particularly important, thereby protecting the personnel from harm and the equipment from pollution. The air filtering method which is researched more at present is active carbon filtering, the active carbon is black powder or blocky, granular and honeycomb amorphous carbon, is a carbide with a porous diameter, has an extremely abundant pore structure and good adsorption characteristics, the adsorption effect of the active carbon is formed by physical and chemical adsorption, the structure of the active carbon is similar to a hexagon, the characteristics of the polyhedron and the high surface area of the active carbon are determined due to the irregular hexagon structure, the specific surface of each gram of the active carbon is equivalent to 1000 square meters, therefore, according to the adsorption characteristics of the active carbon, the active carbon is mainly used for removing pollutants in water, decoloring, filtering and purifying liquid and adsorbing harmful substances such as bacteria, toxic smoke, radioactive dust and the like in gas, but the adsorption performance of the active carbon material used at present is limited, particularly for viruses and bacteria in air, the activated carbon adsorption can easily reach saturation, but can not reach high adsorption efficiency. Therefore, there is a need to develop an activated carbon material with high efficiency for absorbing toxic gases, viruses and bacteria to meet the requirements of social production applications.
Disclosure of Invention
The invention aims to provide a preparation method of sterilized activated carbon, the sterilized activated carbon prepared by the invention has high-capacity adsorption capacity, good stability, strong adsorption performance, sterilization performance and protection performance, and can activate oxygen in the air to change the oxygen into active oxygen to kill bacteria and eliminate peculiar smell under illumination or ultraviolet irradiation. In order to achieve the purpose, the invention adopts the following technical scheme:
according to one aspect of the invention, the preparation method of the sterilized activated carbon is provided, the base carbon is weighed according to the mass and is placed in dispersion liquid, then the dispersion treatment is carried out through ultrasound or stirring, then the standing and soaking are carried out for 0.5-1h, the pre-configured impregnation liquid is added to be uniformly mixed, the mixture is soaked for 10-20 h, then the vacuum centrifugal drying dehydration and cooling are carried out on the mixture at the temperature of 100-120 ℃, then the granulation forming is carried out, finally the active base carbon mixture after the granulation forming is dried and activated in hot air at the high temperature of 110-140 ℃ for 2-5 h, after the mixture is cooled to 30-40 ℃, the drying and activation are carried out for more than 8h at the temperature of 50-60 ℃, and the sterilized activated carbon finished product is obtained.
In a further preferable mode of the above aspect, the mass ratio of the dispersion to the base carbon is 3:1 to 10: 1.
Preferably, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the metal oxide is placed into the ammonia water with the temperature of 25-35 ℃ in the mixing process, the nano metal oxide is completely dispersed into the ammonia water through ultrasonic treatment or stirring treatment, so that nano metal oxide dispersion liquid is formed, then the base carbon is placed into the nano metal oxide dispersion liquid, is uniformly stirred, and is statically placed in a vacuum environment for soaking for 0.5-1h, so that the nano metal oxide is adsorbed into the base carbon.
In a further preferable mode of the scheme, the concentration of the ammonia water is 15% -24%, the mass ratio of the base carbon to the nano metal oxide is 400: 1-1000: 1, the particle size of the base carbon is 100-500 μm, the moisture content is not more than 5%, and the strength is not less than 85%; the nano metal oxide is nano titanium dioxide powder, nano zinc oxide powder, nano aluminum oxide powder, nano cerium oxide powder or nano manganese dioxide, and the particle size of the powder is 50-500 nm.
In a further preferred embodiment of the above method, when the nano metal oxide is completely dispersed in the ammonia water by ultrasonic wave or stirring, a first surfactant is further added, wherein the first surfactant is one or more selected from isopropanol, isobutanol, cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, dodecyldimethylbenzylammonium chloride, dodecylbenzenesulfonate and dodecyldimethylbenzylammonium chloride. The surface of the base carbon and the pore diameter are coated with the surfactant, so that the nano metal oxide can be better dispersed in the impregnation liquid, and the risk of agglomeration and sedimentation of the nano metal oxide is reduced; meanwhile, the surface of the nano metal oxide is coated by the surfactant, so that the interfacial property of the nano metal oxide composite particles and the base carbon is improved, and the adsorption and sterilization performance of the nano metal oxide composite particles is improved.
Preferably, the method comprises the steps of adding a pre-configured impregnation solution, uniformly mixing and soaking, adding a salt solution, uniformly stirring and mixing, adding a second surfactant, uniformly stirring and soaking for 2-5 hours, wherein the salt solution is an yttrium salt solution or a silver salt solution, the yttrium salt solution is yttrium nitrate or yttrium acetate with the concentration of 1% -6%, and the yttrium nitrate is yttrium nitrate hexahydrate; the yttrium acetate is tetrahydrate yttrium acetate (also called tetrahydrate yttrium acetate, the purity is 99.99%), the silver salt solution adopts silver nitrate solution with nitrate of 15% -24%, and the second surfactant is methanol or terpineol. The loading capacity of the metal particles and the nano metal oxide particles in the loaded active carbon can be obviously increased by using a small amount of the second surfactant, so that the physical adsorption performance and the chemical catalysis performance of the active carbon are enhanced;
in a further preferred embodiment of the above-mentioned method, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.05 to 1.13 percent of silver nitrate, 28 to 62 percent of ammonia water, 0.05 to 1.13 percent of ammonium carbonate, 3.6 to 5.8 percent of basic copper carbonate, 0.6 to 3.3 percent of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 20 to 24 percent; the ammonia water and ammonium carbonate form an alkaline buffer solution, and the alkaline solution can dissolve basic copper carbonate and chromic anhydride; plays the roles of stable copper ions, silver ions and stable 6-valent chromium ions, and can sterilize, prevent and degrade toxic and harmful substances, thereby changing the harmful substances in the air into harmless substances.
Preferably, the vacuum centrifugal drying dehydration is carried out at the temperature of 100-120 ℃ until the content of the active carbon reaches 35-50%, then the active carbon is cooled to 35-45 ℃, then a certain amount of adhesive is added, the vacuum centrifugal drying dehydration is continuously carried out at the temperature of 60-70 ℃, the vacuum centrifugal drying dehydration is carried out until the content of the active carbon reaches 20-30%, then the base carbon is sent to a granulator to be pressed, extruded and granulated, so that the strength of the granulated active base carbon is more than 87%, and the particle size is 0.7-1.25 mm.
In a further preferable mode of the scheme, the mass ratio of the adhesive to the base carbon is 1: 7-1: 12; the vacuum degree of the vacuum centrifugal drying dehydration is 0.04MPa-0.08 MPa.
The finished product of the sterilized activated carbon prepared by the invention has wide application in the fields of medicine, ventilation systems, water purification treatment and decorative materials.
In summary, due to the adoption of the technical scheme, the invention has the following technical effects:
(1) the base carbon is one or a combination of more of coal-based activated carbon, wood activated carbon, hard shell activated carbon and straw activated carbon in any proportion. The hard shell is prepared from at least one of coconut shell, palm shell, apricot shell and jujube shell activated carbon, and the hard shell activated carbon is promoted to have a developed pore structure after being activated at high temperature. The active carbon obtained by modifying the base carbon has larger adsorption capacity and good stability, improves the protective performance of the active carbon, and can sterilize, prevent and degrade toxic and harmful substances, thereby changing the harmful substances in the air into harmless substances.
(2) The active carbon with high adsorption performance has large surface area and developed pore structure; in addition, the nano metal oxide can block ultraviolet rays, absorb and attenuate the ultraviolet rays, and can activate oxygen in the air to change the oxygen into active oxygen to kill bacteria and eliminate peculiar smell under illumination or ultraviolet irradiation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Embodiment 1, the preparation method of a sterilized activated carbon provided in this embodiment includes the following steps:
step S1: weighing the base carbon according to the mass, placing the base carbon in dispersion liquid, and performing dispersion treatment by ultrasonic or stirring, preferably by ultrasonic, wherein the ultrasonic intensity is 1500--2The frequency is 20kHz-25kHz, the action time is 10-15min, the mass ratio of the dispersion liquid to the base carbon is 5:1, and the particle size of the base carbon is 300 μm-400 μm; standing and soaking for 0.5h, adding a pre-configured impregnation solution, uniformly mixing, and soaking for 12h-5 h; in this embodiment, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.9% of silver nitrate, 52% of ammonia water, 1% of ammonium carbonate, 4.8% of basic copper carbonate, 2.8% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 22%; the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the concentration of the ammonia water is 18% -20%, the mass ratio of the base carbon to the nano metal oxide is 500: 1-600: 1, and the metal oxide is placed into the ammonia water with the temperature of 30-32 ℃ in the mixing processDispersing the nano metal oxide in ammonia water by ultrasonic to form nano metal oxide dispersion liquid, then putting the base carbon into the nano metal oxide dispersion liquid, stirring uniformly, standing, and soaking in a vacuum environment for 0.5-1h to enable the nano metal oxide to be adsorbed in the base carbon;
step S2: carrying out vacuum centrifugal drying dehydration on the soak solution obtained in the step S1 at the temperature of 100-120 ℃ to 42%, cooling to 40 ℃, and then carrying out granulation molding, so that the strength of the granulated active base carbon is more than 91%, and the particle size is 0.9-1.2 mm;
step S3: and finally, drying and activating the granulated and molded active carbon mixture in hot air at 115-120 ℃ for 3h, cooling to 30 ℃, aging at 60 ℃ for more than 8h, and drying until the moisture content is not more than 5% to obtain the finished product of the sterilized active carbon.
The finished product of the sterilized activated carbon prepared by the embodiment of the invention is applied to a filter screen in a ventilation pipeline, benzene vapor is introduced into the ventilation pipeline, the time for adsorbing and protecting the benzene vapor is longer than 45 minutes, the finished product has a good adsorption effect on toxic substances in the air, can effectively remove harmful gases in the air, and has good isolation and adsorption effects on the harmful substances in the air.
Embodiment 2, the preparation method of the sterilized activated carbon provided in this embodiment includes the following steps:
step S1: weighing base carbon according to the mass, placing the base carbon in dispersion liquid, and performing dispersion treatment by ultrasonic, wherein the mass ratio of the dispersion liquid to the base carbon is 3: 1; the base carbon is hard shell base carbon, then standing and soaking for 0.5h, adding pre-configured impregnation liquid, uniformly mixing and soaking for 10h to obtain an impregnation liquid A,
step S2: adding a salt solution into the soak solution A, stirring and mixing, wherein the salt solution is prepared by stirring and mixing yttrium nitrate or yttrium acetate solution with the concentration of 1%, then adding a first surfactant, uniformly mixing and stirring, and soaking for 2h to obtain a soak solution B;
step S3: then the soak solution B is subjected to vacuum centrifugal drying dehydration at 120 ℃ for 50 percent, is cooled to 35 ℃, is added with a certain amount of adhesive, is continuously subjected to vacuum centrifugal drying dehydration at 60 ℃ for 20 percent, and then is sent to a granulator for pressing, extruding and granulating, so that the strength of the granulated active base carbon is more than 87 percent, and the particle size is 0.7mm-0.9mm,
step S4: finally, performing high-temperature drying and activation on the base carbon mixture subjected to granulation molding in high-temperature hot air at 110 ℃ for 5h, wherein drying and activation equipment mainly adopts a high-efficiency boiling dryer for drying and activation, and high-temperature hot air is introduced into the boiling dryer for drying and activation, so that micropores of the impregnated and dried activated carbon can be effectively prevented from being blocked, the physical adsorption performance and the chemical catalytic performance of the carbon are prevented from being greatly reduced, the activation effect of the pore structure of the base carbon is increased, the pore size distribution is more reasonable, after the base carbon mixture is cooled to 30 ℃, and then is aged at 60 ℃ for 8h, the base carbon mixture is naturally cooled and discharged to below 30 ℃, and a sterilized activated carbon finished product is obtained; after drying and activation and high-temperature aging by high-temperature air, the impregnation liquid in the activated carbon is completely dried and evaporated, and ionic components and nano metal oxide ions (ions formed by dissolving in the impregnation liquid and nano particles which are not dissolved in the impregnation liquid) in the impregnation liquid are loaded in micropores in the activated carbon carrier. In the embodiment, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to put the metal oxide into ammonia water with the temperature of 25 ℃, the concentration of the ammonia water is 16%, and the nano metal oxide is completely dispersed in the ammonia water through ultrasonic or stirring, so that nano metal oxide dispersion liquid is formed, then base carbon is put into the nano metal oxide dispersion liquid, is uniformly stirred, and is statically placed in a vacuum environment for soaking for 0.5h, so that the nano metal oxide is absorbed in the base carbon; the mass ratio of the base carbon to the nano metal oxide is 400:1, the particle size of the base carbon is 500 mu m, the moisture content is not more than 5 percent, and the strength is not less than 90 percent; the nano metal oxide is nano titanium dioxide powder with the particle size of 50 nm; the nano titanium dioxide added in the invention is used as an antibacterial agent, has broad antibacterial spectrum, long effect, safety and stability, is harmless to human bodies, can be recycled, has good adsorption property, is a good photocatalyst, can automatically decompose free moving negative electrons under illumination or ultraviolet irradiation, leaves positive holes, activates oxygen in the air to become active oxygen, and performs chemical reaction with various organic matters to kill germs and viruses.
In the embodiment of the invention, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.05% of silver nitrate, 62% of ammonia water, 1.13% of ammonium carbonate, 3.6% of basic copper carbonate, 3.3% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 24%.
Example 3, the preparation method of the sterilized activated carbon provided in this example includes the following steps
Step S1: weighing the base carbon according to the mass, placing the base carbon in a dispersion liquid, performing dispersion treatment by ultrasonic or stirring, standing and soaking for 1h, wherein the mass ratio of the dispersion liquid to the base carbon is 10:1, adding a pre-configured impregnation liquid, uniformly mixing, and soaking for 20h to obtain a soaking liquid A, in the embodiment, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to place the metal oxide in ammonia water at 25 ℃, completely disperse the nano metal oxide in the ammonia water by ultrasonic or stirring to form nano metal oxide dispersion liquid, then placing the base carbon in the nano metal oxide dispersion liquid, uniformly stirring, standing and soaking in a vacuum environment for 0.5h to enable the nano metal oxide to be adsorbed in the base carbon; the concentration of the ammonia water is 15%, the mass ratio of the base carbon to the nano metal oxide is 1000:1, the particle size of the base carbon is 100 micrometers, the moisture content is not more than 5%, and the strength is not less than 85%; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 50 nm-100 nm;
step S2: adding a salt solution into the soak solution A, stirring and mixing, wherein the salt solution is an yttrium salt solution, the yttrium salt solution is a 6% yttrium nitrate or yttrium acetate solution, stirring and mixing, and then adding a second surfactant, mixing, stirring uniformly, soaking and soaking for 5 hours to obtain a soak solution B; thereby effectively adjusting the pH value of the soaking solution A, and adding yttrium salt solution to ensure that the pH value in the soaking solution A is less than 7; the acidity of the yttrium nitrate or yttrium acetate is weak, the residual waste acid in the solution neutralizes the redundant ammonia water in the soak solution, so that the pH value of the soak solution is adjusted, redundant yttrium ions are remained in the soak solution, and redundant metal yttrium ions can be used for sterilization, so that a good sterilization effect can be achieved;
step S3: carrying out vacuum centrifugal drying dehydration on the soak solution B prepared in the step S2 at the temperature of 100 ℃ for 35%, cooling to 45 ℃, adding a certain amount of adhesive, continuing to carry out vacuum centrifugal drying dehydration at the temperature of 70 ℃ to 30%, feeding the base carbon into a granulator, pressing, extruding and granulating to enable the strength of the granulated active base carbon to be more than 89%, wherein the particle size is 1mm-1.2mm, and the mass ratio of the adhesive to the base carbon is 1: 7; the vacuum degree of the vacuum centrifugal drying dehydration is 0.04 MPa;
step S4: finally, drying and activating the base carbon mixture subjected to granulation molding at high temperature in 140 ℃ high-temperature air for 2h, cooling to 40 ℃, aging at 50 ℃ for 18h, naturally cooling and discharging to below 30 ℃ to obtain a finished product of the sterilized activated carbon;
in this embodiment, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 1.13% of silver nitrate, 28% of ammonia water, 0.05% of ammonium carbonate, 5.8% of basic copper carbonate, 0.6% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 20%;
example 4 this example provides a method for preparing sterilized activated carbon comprising the following steps
Step S1: weighing the base carbon according to the mass, placing the base carbon in a dispersion liquid, performing dispersion treatment by ultrasonic or stirring, standing and soaking for 0.8h, wherein the mass ratio of the dispersion liquid to the base carbon is 4:1, adding a pre-configured impregnation liquid, uniformly mixing, and soaking for 13h to obtain a soaking liquid A, in the embodiment, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to place the metal oxide in the ammonia water at 32 ℃, completely disperse the nano metal oxide in the ammonia water by ultrasonic or stirring to form nano metal oxide dispersion liquid, then placing the base carbon in the nano metal oxide dispersion liquid, uniformly stirring, standing and soaking in a vacuum environment for 0.8h to enable the nano metal oxide to be adsorbed in the base carbon; the concentration of the ammonia water is 24%, the mass ratio of the base carbon to the nano metal oxide is 600:1, the particle size of the base carbon is 300 mu m, the moisture content is not more than 5%, and the strength is 90%; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 200 nm-300 nm;
step S2: adding a salt solution into the soak solution A, stirring and mixing the salt solution by adopting a yttrium nitrate or yttrium acetate solution with the concentration of 3.5%, then adding a first surfactant, mixing, stirring uniformly, soaking and soaking for 3 hours to obtain a soak solution B;
step S3: carrying out vacuum centrifugal drying dehydration on the soak solution B prepared in the step S2 at 120 ℃ for 50%, cooling to 45 ℃, adding a certain amount of adhesive, continuing to carry out vacuum centrifugal drying dehydration at 65 ℃ to 24%, feeding the base carbon into a granulator, pressing, extruding and granulating to enable the strength of the granulated active base carbon to be more than 92%, wherein the particle size is 0.7mm-0.8mm, and the mass ratio of the adhesive to the base carbon is 1: 12; the vacuum degree of the vacuum centrifugal drying dehydration is 0.08 MPa;
step S4: and finally, drying and activating the dried and dehydrated base carbon mixture at high temperature in hot air at 120 ℃ for 3.5h, cooling to 35 ℃, aging at 55 ℃ for 12h, and drying until the moisture content is not more than 5% to obtain the finished product of the sterilized activated carbon.
In the embodiment of the invention, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.08 percent of silver nitrate, 40 percent of ammonia water, 0.08 percent of ammonium carbonate, 5 percent of basic copper carbonate, 2.4 percent of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 22 percent.
Example 5
The preparation method of the sterilized activated carbon provided by the embodiment comprises the following steps:
step S1: weighing base carbon according to mass, placing the base carbon in dispersion liquid, analyzing and dispersing the base carbon by ultrasonic or stirring, standing and soaking for 0.6h, wherein the mass ratio of the dispersion liquid to the base carbon is 8:1, adding pre-configured impregnation liquid, uniformly mixing and soaking for 15h to obtain soaking liquid A, wherein the dispersion liquid is formed by mixing ammonia water and nano metal oxide, and the mixing process is to place the metal oxide in 28 ℃ ammonia water and completely disperse the nano metal oxide in the ammonia water by ultrasonic or stirring to form nano metal oxide dispersion liquid; then putting the base carbon into the nano metal oxide dispersion liquid, uniformly stirring, standing, and soaking for 1h in a vacuum environment to enable the nano metal oxide to be adsorbed in the base carbon; the concentration of the ammonia water is 20%, the mass ratio of the base carbon to the nano metal oxide is 800:1, the particle size of the base carbon is 400 micrometers, the moisture content is not more than 5%, and the strength is not less than 90%; the nano metal oxide is nano titanium dioxide powder with the particle size of 400 nm; in this embodiment, when the nano metal oxide is completely dispersed in the ammonia water by ultrasonic or stirring, the first surfactant is further added, so that the nano metal oxide is better dispersed in the ammonia water, the nano metal oxide is prevented from agglomerating in the ammonia water, and the adsorption and catalysis composite performances between the nano metal oxide and the active carbon are improved, wherein the first surfactant is one or more of isopropanol, isobutanol, cetyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, sodium dodecyl benzene sulfonate and dodecyl dimethyl benzyl ammonium chloride;
step S2: adding a salt solution into the soak solution A, stirring and mixing, wherein the salt solution is an yttrium salt solution, the yttrium salt solution is a 4% yttrium nitrate or yttrium acetate solution, stirring and mixing, and then adding a second surfactant, mixing, stirring uniformly, soaking and soaking for 3 hours to obtain a soak solution B; the second surfactant is methanol or terpineol, the waste acid existing in yttrium nitrate or yttrium acetate is very weak in acidity, the residual waste acid in the solution neutralizes redundant liquid ammonia water in the soak solution, so that the pH value in the soak solution is adjusted, and redundant yttrium ions are remained in the soak solution, so that the prepared activated carbon has a large specific surface area and stable performance, the redundant metal yttrium ions can be used for sterilization and play a good catalytic role, the photodegradation treatment efficiency is high, and harmful gases in the air can be decomposed under the irradiation of ultraviolet light;
step S3: carrying out vacuum centrifugal drying dehydration on the soak solution B prepared in the step S2 at the temperature of 115 ℃ to 40%, cooling to 35 ℃, adding a certain amount of adhesive, continuing carrying out vacuum centrifugal drying dehydration at the temperature of 68 ℃ to 25%, feeding the base carbon into a granulator, pressing, extruding and granulating to enable the strength of the granulated active base carbon to be more than 87%, wherein the particle size is 1.25 mm; the mass ratio of the adhesive to the base carbon is 1: 7; the vacuum degree of the vacuum centrifugal drying dehydration is 0.07 MPa;
step S4: and finally, drying and activating the dried and dehydrated base carbon mixture at high temperature for 4h in high-temperature hot air at 120 ℃, cooling to 40 ℃, and then aging at 52 ℃ for more than 12h to obtain a finished product of the sterilized activated carbon.
In the embodiment of the invention, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.09% of silver nitrate, 40% of ammonia water, 1.01% of ammonium carbonate, 5.2% of basic copper carbonate, 1.6% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 21%.
Example 6
The embodiment provides a preparation method of sterilized activated carbon, which comprises the following steps:
weighing base carbon according to the mass, placing the base carbon in dispersion liquid, and performing ultrasonic or stirring dispersion treatment, wherein the mass ratio of the dispersion liquid to the base carbon is 6: 1; the method comprises the following steps of (1) standing and soaking hard shell-based carbon for 0.7h, adding a pre-configured soaking solution, uniformly mixing, soaking for 12h to obtain a soaking solution A, adding a salt solution into the soaking solution A, stirring and mixing, wherein the salt solution is prepared by stirring and mixing a silver nitrate solution with the concentration of 18%, and soaking for 2h to obtain a soaking solution B; then the soak solution B is processed with vacuum centrifugal drying dehydration and cooling under the condition of 110 ℃ and then is processed with granulation molding, the base carbon is sent into a granulator to be pressed and extruded for granulation after the vacuum centrifugal drying dehydration reaches 22 percent, the intensity of the active base carbon after granulation is more than 87 percent, the grain diameter is 1mm, finally the base carbon mixture after granulation molding is processed with high-temperature drying and activation for 3 hours in high-temperature hot air of 120 ℃, the drying and activation equipment mainly adopts a high-efficiency boiling dryer to carry out drying and activation, the high-temperature hot air is led into the high-efficiency boiling dryer to carry out drying and activation, the micropores of the active carbon after dipping and drying can be effectively prevented from being seriously blocked, so as to avoid the physical adsorption performance and chemical catalytic performance of the carbon from being greatly reduced, thereby the activation effect of the pore structure of the base carbon is increased, the pore size distribution is more reasonable, after the mixture is cooled to 32 ℃, and then the mixture is aged, naturally cooling and discharging to below 30 ℃ to obtain a sterilized activated carbon finished product; after drying activation and high-temperature aging by high-temperature steam, the impregnation liquid in the activated carbon is completely dried and evaporated, and ionic components and nano metal oxide ions (ions formed by dissolving in the impregnation liquid and nano particles which are not dissolved in the impregnation liquid) in the impregnation liquid are loaded in micropores in the activated carbon carrier. In the embodiment, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to put metal oxide into ammonia water with the temperature of 28 ℃, and completely disperse the nano metal oxide in the ammonia water through ultrasonic or stirring, so as to form nano metal oxide dispersion liquid, then put base carbon into the nano metal oxide dispersion liquid, stir uniformly, stand in a vacuum environment, and soak for 0.8h, so that the nano metal oxide is absorbed in the base carbon; the concentration of the ammonia water is 20%, the mass ratio of the base carbon to the nano metal oxide is 600:1, the particle size of the base carbon is 150 micrometers, the moisture content is not more than 5%, and the strength is not less than 90%; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 250 nm; the nano titanium dioxide added in the invention is used as an antibacterial agent, has broad antibacterial spectrum, long effect, safety and stability, is harmless to human bodies, can be recycled, has good adsorption property, is a good photocatalyst, can automatically decompose free moving negative electrons under illumination or ultraviolet irradiation, leaves positive holes, activates oxygen in the air to become active oxygen, and performs chemical reaction with various organic matters to kill germs and viruses. The finished product of the sterilized activated carbon prepared by the invention is applied to a filter screen in a ventilation pipeline, and chloroethane steam is introduced into the ventilation pipeline, so that the time for adsorbing and protecting benzene steam is longer than 27 minutes, the finished product has a good adsorption effect on toxic substances in the air, can effectively remove harmful gas in the air, and has good isolation and adsorption effects on the harmful substances in the air.
In the embodiment of the invention, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.08 percent of silver nitrate, 40 percent of ammonia water, 0.08 percent of ammonium carbonate, 5 percent of basic copper carbonate, 2.4 percent of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 20 to 24 percent.
Example 7
The preparation method of the sterilized activated carbon provided by the embodiment comprises the following steps
Step S1: weighing the base carbon according to the mass, placing the base carbon in a dispersion liquid, dispersing the base carbon by ultrasound or stirring, standing and soaking for 0.5h, wherein the mass ratio of the dispersion liquid to the base carbon is 3:1, adding a pre-configured impregnation liquid, uniformly mixing and soaking for 10h to obtain a soaking liquid A, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to place the metal oxide in ammonia water at 25 ℃, completely disperse the nano metal oxide in the ammonia water by ultrasound or stirring to form nano metal oxide dispersion liquid, then placing the base carbon in the nano metal oxide dispersion liquid, uniformly stirring, standing and soaking for 0.5h in a vacuum environment, so that the nano metal oxide is adsorbed in the base carbon; the concentration of the ammonia water is 15%, the mass ratio of the base carbon to the nano metal oxide is 400:1, the particle size of the base carbon is 100 micrometers, the moisture content is not more than 5%, and the strength is not less than 85%; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 150 nm;
step S2: adding a salt solution into the soaking solution A, stirring and mixing, wherein the salt solution is a 15% silver nitrate solution, and adding the 15% silver nitrate solution, stirring and mixing, and soaking for 2 hours to obtain a soaking solution B; thereby effectively adjusting the pH value of the soaking solution A, and adding a silver nitrate solution to ensure that the pH value in the soaking solution A is less than 7; the acidity of the silver nitrate is very weak, the residual waste acid in the solution neutralizes the redundant liquid ammonia water in the soak solution, so that the pH value of the soak solution is adjusted, the redundant silver ions are remained in the soak solution, and the redundant metal silver ions can be used for sterilization, so that a good sterilization effect is achieved;
step S3: carrying out vacuum centrifugal drying dehydration and cooling on the soak solution B prepared in the step S2 at the temperature of 100 ℃, adding a certain amount of adhesive when the vacuum centrifugal drying dehydration is carried out to 35% and the soak solution B is cooled to 35 ℃, continuously carrying out vacuum centrifugal drying dehydration at the temperature of 60 ℃, carrying out granulation molding after the dehydration is finished, sending the base carbon into a granulator for compression, extrusion and granulation after the vacuum centrifugal drying dehydration is carried out to 20%, and enabling the active base carbon degree after the granulation to be more than 87% and the particle size to be 1.5 mm; the mass ratio of the adhesive to the base carbon is 1: 7; the vacuum degree of the vacuum centrifugal drying dehydration is 0.04 MPa;
step S4: and finally, drying and activating the dried and dehydrated base carbon mixture at high temperature for 5h in high-temperature hot air at 100 ℃, aging at 50 ℃ for 10h after cooling to 30 ℃, naturally cooling and discharging to below 30 ℃ to obtain a finished product of the sterilized activated carbon.
The pre-configured impregnation liquid is prepared from the following raw materials in percentage by mass: 1.13% of silver nitrate, 28% of ammonia water, 0.05% of ammonium carbonate, 3.6% of basic copper carbonate, 0.6% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 20%;
example 8
The preparation method of the sterilized activated carbon provided by the embodiment comprises the following steps
Step S1: weighing base carbon according to mass, placing the base carbon in dispersion liquid, performing dispersion treatment by ultrasonic or stirring, standing and soaking for 1h, wherein the mass ratio of the dispersion liquid to the base carbon is 10:1, adding pre-configured impregnation liquid, uniformly mixing and soaking for 20h to obtain soaking liquid A, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to place the metal oxide in 30 ℃ ammonia water, completely disperse the nano metal oxide in the ammonia water by ultrasonic or stirring to form nano metal oxide dispersion liquid, then placing the base carbon in the nano metal oxide dispersion liquid, uniformly stirring, standing and soaking for 1h in a vacuum environment, so that the nano metal oxide is adsorbed in the base carbon; the concentration of the ammonia water is 24%, the mass ratio of the base carbon to the nano metal oxide is 1000:1, the particle size of the base carbon is 500 mu m, the moisture content is not more than 5%, and the strength is not less than 85%; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 200 nm-300 nm;
step S2: adding a salt solution into the soaking solution A, stirring and mixing, wherein the salt solution is a 24% silver nitrate solution, and adding the 24% silver nitrate solution, stirring and mixing, and soaking for 5h to obtain a soaking solution B;
step S3: carrying out vacuum centrifugal drying dehydration and cooling on the soak solution B prepared in the step S2 at 120 ℃, wherein the vacuum centrifugal drying dehydration is carried out to 50%, the vacuum centrifugal drying dehydration is carried out to 45 ℃, then a certain amount of adhesive is added, the vacuum centrifugal drying dehydration is continuously carried out at 70 ℃, granulation molding is carried out after the dehydration is finished, the base carbon is sent into a granulator to be pressed and extruded for granulation after the vacuum centrifugal drying dehydration is carried out to 30%, so that the strength of the granulated active base carbon is more than 87%, and the particle size is 1 mm; the mass ratio of the adhesive to the base carbon is 1: 12; the vacuum degree of vacuum centrifugal drying dehydration is 0.08 MPa;
step S4: and finally, drying and activating the dried and dehydrated base carbon mixture in high-temperature steam at 140 ℃ for 2h, cooling to 40 ℃, and then aging at 60 ℃ for 12h to obtain a finished product of the sterilized activated carbon.
In the embodiment of the invention, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.05% of silver nitrate, 62% of ammonia water, 1.13% of ammonium carbonate, 5.8% of basic copper carbonate, 3.3% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 24%.
Example 9
The preparation method of the sterilized activated carbon provided by the embodiment comprises the following steps
Step S1: weighing base carbon according to mass, placing the base carbon in a dispersion liquid, performing dispersion treatment by ultrasonic or stirring, standing and soaking for 0.8h, wherein the mass ratio of the dispersion liquid to the base carbon is 6: 1-7: 1, adding a pre-configured impregnation liquid, uniformly mixing, soaking for 15h to obtain a soaking liquid A, wherein the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to place the metal oxide in 28 ℃ ammonia water, completely disperse the nano metal oxide in the ammonia water by ultrasonic or stirring to form nano metal oxide dispersion liquid, then placing the base carbon in the nano metal oxide dispersion liquid, uniformly stirring, standing and soaking for 0.8h in a vacuum environment, and enabling the nano metal oxide to be adsorbed in the base carbon; the ammonia water concentration is 22%, the mass ratio of the base carbon to the nano metal oxide is 600: 1-700: 1, the particle size of the base carbon is 200-300 mu m, the water content is not more than 5%, and the strength is not less than 85%; the nano metal oxide is nano titanium dioxide powder with the particle size of 500 nm;
step S2: adding salt solution into soaking solution A, stirring and mixing, wherein the salt solution is 24% silver nitrate solution, adding 24% silver nitrate solution, stirring and mixing, soaking for 5 hr to obtain soaking solution B,
step S3: vacuum centrifugal drying dehydration and cooling are carried out on the soak solution B prepared in the step S2 at the temperature of 110 ℃, wherein the vacuum centrifugal drying dehydration is carried out to 42-45%, the soak solution B is cooled to 40 ℃, then a certain amount of adhesive is added, the vacuum centrifugal drying dehydration is carried out continuously at the temperature of 66 ℃ after a certain amount of adhesive is added, and granulation molding is carried out after the dehydration is finished, wherein the base carbon is sent to a granulator for compression and extrusion granulation after the vacuum centrifugal drying dehydration is carried out to 26%, so that the strength of the granulated active base carbon is more than 87%, and the particle size is 0.9 mm; the mass ratio of the adhesive to the base carbon is 1: 8-1: 9; the vacuum degree of the vacuum centrifugal drying dehydration is 0.07 MPa;
step S4: and finally, drying and activating the dried and dehydrated base carbon mixture in high-temperature steam at 130 ℃ for 3h, cooling to 36 ℃, and aging at 56 ℃ for more than 10h to obtain a finished product of the sterilized activated carbon.
The pre-configured impregnation liquid is prepared from the following raw materials in percentage by mass: 1% of silver nitrate, 52% of ammonia water, 0.09% of ammonium carbonate, 4.6% of basic copper carbonate, 2.5% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 22%;
example 10
The preparation method of the sterilized activated carbon provided by the embodiment comprises the following steps
Step S1: weighing the base carbon according to the mass, placing the base carbon into a dispersion liquid, dispersing the base carbon by ultrasonic or stirring, standing and soaking for 1h, wherein the mass ratio of the dispersion liquid to the base carbon is 8:1, adding a pre-configured impregnation liquid, uniformly mixing and soaking for 18h to obtain a soaking liquid A, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to place the metal oxide into ammonia water at 28 ℃, and completely disperse the nano metal oxide into the ammonia water by ultrasonic or stirring to form nano metal oxide dispersion liquid, in the embodiment, a first surfactant is also added when the nano metal oxide is completely dispersed into the ammonia water by ultrasonic or stirring, so that the nano metal oxide is better dispersed into the ammonia water, the nano metal oxide is prevented from being agglomerated in the ammonia water, and the composite performances of adsorption, catalysis and the like between the nano metal oxide and the active base carbon are improved, the first surfactant is one or more of isopropanol, isobutanol, cetyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, sodium dodecyl benzene sulfonate and dodecyl dimethyl benzyl ammonium chloride; then putting the base carbon into the nano metal oxide dispersion liquid, uniformly stirring, standing, and soaking for 1h in a vacuum environment to enable the nano metal oxide to be adsorbed in the base carbon; the concentration of the ammonia water is 20%, the mass ratio of the base carbon to the nano metal oxide is 800:1, the particle size of the base carbon is 400 micrometers, the moisture content is not more than 5%, and the strength is not less than 90%; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 350 nm;
step S2: adding salt solution into the soaking solution A, stirring and mixing, wherein the salt solution is 20% silver nitrate solution, adding 20% silver nitrate solution, stirring and mixing, soaking for 4 hr to obtain soaking solution B,
step S3: carrying out vacuum centrifugal drying dehydration and cooling on the soak solution B prepared in the step S2 at 115 ℃, wherein the vacuum centrifugal drying dehydration is carried out to 40%, the vacuum centrifugal drying dehydration is carried out to 35 ℃, then a certain amount of adhesive is added, the vacuum centrifugal drying dehydration is carried out continuously at 68 ℃ after a certain amount of adhesive is added, and granulation molding is carried out after the dehydration is finished, wherein the base carbon is sent into a granulator to be pressed and extruded for granulation after the vacuum centrifugal drying dehydration is carried out to 25%, so that the strength of the granulated active base carbon is more than 87%, and the particle size is 1.2 mm; the mass ratio of the adhesive to the base carbon is 1: 7; the vacuum degree of the vacuum centrifugal drying dehydration is 0.07 MPa;
step S4: and finally, drying and activating the dried and dehydrated base carbon mixture in high-temperature steam at 120 ℃ for 4h, cooling to 40 ℃, and then aging at 52 ℃ for more than 12h to obtain a finished product of the sterilized activated carbon.
In the embodiment of the invention, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.09% of silver nitrate, 40% of ammonia water, 1.01% of ammonium carbonate, 5.2% of basic copper carbonate, 1.6% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 21%;
example 11
The embodiment provides a preparation method of sterilized activated carbon, which comprises the following steps:
step S1: weighing base carbon according to the mass, placing the base carbon in dispersion liquid, and performing dispersion treatment by ultrasonic, wherein the mass ratio of the dispersion liquid to the base carbon is 7: 1; the base carbon is hard shell base carbon, standing and soaking for 0.8h, adding a pre-configured steeping fluid, uniformly mixing, and soaking for 12h to obtain a steeping fluid A; the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to put the metal oxide into the ammonia water with the temperature of 32 ℃, and the nano metal oxide is completely dispersed in the ammonia water by ultrasonic or stirring, thereby forming nano metal oxide dispersion liquid, in the embodiment, the first surfactant is also added when the nano metal oxide is completely dispersed in the ammonia water through ultrasonic or stirring, so that the nano metal oxide is better dispersed in the ammonia water, the nano metal oxide is prevented from agglomerating in the ammonia water, the composite performances of adsorption, catalysis and the like between the nano metal oxide and the active carbon are improved, the first surfactant is one or more of isopropanol, isobutanol, cetyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, sodium dodecyl benzene sulfonate and dodecyl dimethyl benzyl ammonium chloride; then putting the base carbon into the nano metal oxide dispersion liquid, uniformly stirring, standing, and soaking for 1h in a vacuum environment to enable the nano metal oxide to be adsorbed in the base carbon; the concentration of the ammonia water is 18%, the mass ratio of the base carbon to the nano metal oxide is 700:1, the particle size of the base carbon is 350 micrometers, the moisture content is not more than 5%, and the strength is not less than 89%; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 250-300 nm; in the embodiment, the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the mixing process is to put the metal oxide into 30 ℃ ammonia water, the concentration of the ammonia water is 18%, and the nano metal oxide is completely dispersed in the ammonia water through ultrasonic or stirring, so that nano metal oxide dispersion liquid is formed, then the base carbon is put into the nano metal oxide dispersion liquid, is uniformly stirred, and is statically placed in a vacuum environment for soaking for 0.6h, so that the nano metal oxide is absorbed in the base carbon; the mass ratio of the base carbon to the nano metal oxide is 550:1, the particle size of the base carbon is 400 mu m, the moisture content is not more than 5 percent, and the strength is not less than 90 percent; the nano metal oxide is nano titanium dioxide powder, and the particle size of the powder is 100 nm;
step S2: adding a salt solution into the soak solution A, stirring and mixing, wherein the salt solution is a silver nitrate solution with the concentration of 22%, then adding a first surfactant, mixing, stirring uniformly, soaking and soaking for 2h to obtain a soak solution B;
step S3: carrying out vacuum centrifugal drying dehydration on the soak solution B at 120 ℃ for 45%, cooling to 35 ℃, adding a certain amount of adhesive, continuing to carry out vacuum centrifugal drying dehydration at 60 ℃ for 24%, feeding the base carbon into a granulator, pressing, extruding and granulating to ensure that the strength of the granulated active base carbon is more than 87%, the particle size is 0.9mm-1.1mm, and the mass ratio of the adhesive to the base carbon is 1: 8;
step S4: finally, performing high-temperature drying and activation on the base carbon mixture subjected to granulation molding in high-temperature hot air at 110 ℃ for 5h, wherein drying and activation equipment mainly adopts a high-efficiency boiling dryer for drying and activation, and high-temperature hot air is introduced into the boiling dryer for drying and activation, so that micropores of the impregnated and dried activated carbon can be effectively prevented from being blocked, the physical adsorption performance and the chemical catalytic performance of the carbon are prevented from being greatly reduced, the activation effect of the pore structure of the base carbon is increased, the pore size distribution is more reasonable, after the base carbon mixture is cooled to 30 ℃, and then is aged at 60 ℃ for 12h, the base carbon mixture is naturally cooled and discharged to below 30 ℃, and a sterilized activated carbon finished product is obtained; after drying and activation and high-temperature aging by high-temperature air, the impregnation liquid in the activated carbon is completely dried and evaporated, and ionic components and nano metal oxide ions (ions formed by dissolving in the impregnation liquid and nano particles which are not dissolved in the impregnation liquid) in the impregnation liquid are loaded in micropores in the activated carbon carrier.
In the embodiment of the invention, the pre-configured impregnation liquid is prepared from the following raw materials in parts by mass: 0.05% of silver nitrate, 62% of ammonia water, 1.13% of ammonium carbonate, 3.6% of basic copper carbonate, 3.3% of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 24%; the sterilized activated carbon finished product prepared by the invention is applied to a filter screen in a ventilation pipeline, cyanogen chloride gas is introduced into the ventilation pipeline, the time for adsorbing and protecting benzene vapor is longer than 10 minutes, the sterilized activated carbon finished product has a good adsorption effect on toxic gas in the air, can effectively remove harmful gas in the air, and has good isolation and adsorption effects on harmful substances in the air
Example 12
This example provides a method for preparing sterilized activated carbon, which differs from example 10 in that the mass ratio of the base carbon to the nano metal oxide is 500:1, the particle size of the base carbon is 150 μm, the moisture content is not more than 5%, and the strength is not less than 87%; the nano metal oxide is nano zinc oxide powder, and the particle size of the powder is 120 nm-250 nm.
Example 13
This example provides a method for producing sterilized activated carbon, which differs from example 10 in that the base carbon is placed in a dispersion liquid to be dispersed by ultrasonic waves or stirring, and then left to stand and soak for 1 hour; the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the metal oxide is placed into the ammonia water with the temperature of 35 ℃ in the mixing process, the concentration of the ammonia water is 18 percent, the mass ratio of the base carbon to the nano metal oxide is 750:1, the particle size of the base carbon is 300 mu m, the moisture content is not more than 5 percent, and the strength is not less than 85 percent; the nano metal oxide is nano cerium oxide powder, and the particle size of the powder is 120 nm-250 nm.
Example 14
The difference between the preparation method of the sterilized activated carbon provided in this example and the preparation method of the sterilized activated carbon provided in this example 10 is that the base carbon is placed in the dispersion liquid and then subjected to dispersion treatment by ultrasonic waves or stirring, and then is left to stand and soak for 0.6 h; the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the metal oxide is placed into the ammonia water with the temperature of 330 ℃ in the mixing process, the concentration of the ammonia water is 20%, the mass ratio of the base carbon to the nano metal oxide is 850:1, the particle size of the base carbon is 350 mu m, the moisture content is not more than 5%, and the strength is not less than 85%; the nano metal oxide is nano manganese dioxide, and the particle size of the powder is 350-450 nm. The sterilization activated carbon prepared by the embodiment has the advantages of good effect of adsorbing various harmful gases, catalytic decomposition in the process of adsorbing the harmful gases, and very wide application prospect.
According to the preparation method of the sterilized activated carbon, various sterilized activated carbon finished products are obtained, the sterilized activated carbon has an excellent air purification effect, and has a good adsorption effect on harmful gases (ammonia gas, hydrogen sulfide, formaldehyde and the like) polluted by air, and the air purification effect and the adsorption effect mainly refer to the protection capability of the activated carbon on strong polar gases such as cyanogen chloride and hydrocyanic acid; the micropores of the activated carbon can adsorb a certain amount of nonpolar gases, such as benzene vapor, chloroethane vapor and other gases which are not easy to react, although the gases have toxicity and are easy to protect, the conventional activated carbon can meet the requirements, but the gases which are extremely toxic, strong in polarity and easy to react, such as cyanogen chloride and hydrocyanic acid, are difficult to adsorb, and the gases which are easy to react per se need to be catalyzed to react to generate harmless gases, namely, the harmful gases which are easy to react are decomposed into the harmless gases. In the experiment, according to GBT7702.10-2008 'test method of coal granular activated carbon, determination of benzene vapor and chloroethane vapor protection time', under the specified experimental conditions, air flow containing harmful gases such as benzene vapor, chloroethane vapor and cyanogen chloride is continuously passed through the sterilized activated carbon granular layer prepared by the invention until the air flow reaches the time when the harmful gases such as benzene vapor, chloroethane vapor and cyanogen chloride penetrate through the sterilized activated carbon granular layer, the harmful gases with certain concentration pass through the sterilized activated carbon granular layer at the flow rate of 2L/min-5L/min, the activated sterilized activated carbon granular layer is dense activated carbon with quantitative center, both ends of the determination equipment are respectively provided with an air inlet and an air outlet, initially, the air outlet of the determination equipment cannot detect that toxic gases leak out from the air flow due to the adsorption effect of the activated carbon, however, as the adsorption of the activated carbon is gradually saturated, the gas outlet can detect the leakage of the toxic gas contained in the air flow, and the time for preventing the gas leakage, namely the protection time, represents the adsorption capacity of the activated carbon for the test gas; the sterilized active carbon finished product has the protection time for benzene vapor of more than 45 minutes, the protection time for chloroethane of more than 27 minutes and the protection time for cyanogen chloride after aging of more than 10 minutes, thereby effectively adsorbing harmful gases in the air and killing bacteria and viruses in the air.
Application example 1
Air purification: the sterilization activated carbon is applied to filter screens in various air conditioners, air purifiers, gas masks, gas-proof clothes and ventilating ducts, is detected according to the method specified in GB21551.1-2008 general rules on antibacterial, degerming and purifying functions of household appliances and similar electric appliances and GB/T18883-2002 indoor air quality standard, has a good adsorption effect on particulate matters in the air, can effectively remove bacteria, viruses and harmful substances in the air, and has good isolation and adsorption effects on the harmful substances in the air; the sterilization active carbon has excellent air purification effect, antibacterial performance, reliable safety and excellent long-acting performance, can effectively avoid the growth of bacteria on the active carbon, and can effectively inhibit and kill escherichia coli, staphylococcus aureus, mould and the like.
Application example 2
The sterilizing active carbon of the invention is applied to the textile fabrics to absorb various harmful gases and kill bacteria.
Application example 3
The sterilized active carbon is applied to the decorative plate and is used for adsorbing various harmful gases, killing bacteria, activating oxygen and blocking and absorbing harmful substances released by building materials.
Application example 4
The sterilization active carbon is applied to sewage treatment, so that various harmful ions in water can be well removed, bacteria in filtered water can be effectively killed, and a good purification effect is achieved.
Application example 5
The sterilizing active carbon can be used as a medicine for treating skin trauma, can quickly stop bleeding of adsorbed wounds, prevent wound infection, and adsorb bacteria on the wounds and the skin, and has certain sterilizing and disinfecting properties.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (10)
1. A preparation method of sterilization active carbon is characterized in that: weighing the base carbon according to the mass, putting the base carbon into dispersion liquid, performing dispersion treatment by ultrasound or stirring, standing and soaking for 0.5-1h, adding pre-configured impregnation liquid, uniformly mixing, soaking for 10-20 h, performing vacuum centrifugal drying dehydration and cooling at 100-120 ℃, then performing granulation molding, finally drying and activating the granulated and molded active base carbon mixture in high-temperature hot air at 110-140 ℃ for 2-5 h, cooling to 30-40 ℃, and then aging at 50-60 ℃ for more than 8h to obtain the finished product of the sterilized active carbon.
2. The method for preparing sterilized activated carbon according to claim 1, wherein: the mass ratio of the dispersion liquid to the base carbon is 3: 1-10: 1.
3. The method for preparing sterilized activated carbon according to claim 1 or 2, wherein: the dispersion liquid is formed by mixing ammonia water and nano metal oxide, the metal oxide is placed into the ammonia water with the temperature of 25-35 ℃ in the mixing process, the dispersion treatment is carried out through ultrasound or stirring to enable the nano metal oxide to be completely dispersed in the ammonia water, so that the nano metal oxide dispersion liquid is formed, then the base carbon is placed into the nano metal oxide dispersion liquid to be uniformly stirred and stands still in a vacuum environment to be soaked for 0.5-1h, and the nano metal oxide is adsorbed in the base carbon.
4. The method for preparing sterilized activated carbon according to claim 3, wherein: the concentration of the ammonia water is 15% -24%, the mass ratio of the base carbon to the nano metal oxide is 400: 1-1000: 1, the particle size of the base carbon is 100-500 mu m, the moisture content is not more than 5%, and the strength is not less than 85%; the nano metal oxide is nano titanium dioxide powder, nano zinc oxide powder, nano aluminum oxide powder, nano cerium oxide powder or nano manganese dioxide, and the particle size of the powder is 50-500 nm.
5. The method for preparing sterilized activated carbon according to claim 3, wherein: when the nano metal oxide is completely dispersed in the ammonia water by ultrasonic or stirring, a first surfactant is also added, wherein the first surfactant is one or more of isopropanol, isobutanol, cetyl trimethyl ammonium bromide, cetyl trimethyl ammonium chloride, dodecyl dimethyl benzyl ammonium chloride, dodecyl benzene sulfonic acid sodium and dodecyl dimethyl benzyl ammonium chloride.
6. The method for preparing sterilized activated carbon according to claim 1, wherein: adding a pre-configured impregnation solution, uniformly mixing and soaking, then adding a salt solution, stirring and mixing, then adding a second surfactant, uniformly mixing and stirring, and soaking for 2-5 h, wherein the salt solution is an yttrium salt solution or a silver salt solution, the yttrium salt solution adopts yttrium nitrate or yttrium acetate with the concentration of 1% -6%, the silver salt solution adopts a silver nitrate solution with the concentration of 15% -24%, and the second surfactant is methanol or terpineol.
7. The method for preparing sterilized activated carbon according to claim 1 or 6, wherein: the pre-configured impregnation liquid is prepared from the following raw materials in percentage by mass: 0.05 to 1.13 percent of silver nitrate, 28 to 62 percent of ammonia water, 0.05 to 1.13 percent of ammonium carbonate, 3.6 to 5.8 percent of basic copper carbonate, 0.6 to 3.3 percent of chromic anhydride and the balance of deionized water, wherein the concentration of the ammonia water is 20 to 24 percent.
8. The method for preparing sterilized activated carbon according to claim 1, wherein: vacuum centrifugal drying dehydration is carried out at the temperature of 100-120 ℃ until the content of the active carbon reaches 35-50%, then the active carbon is cooled to 35-45 ℃, a certain amount of adhesive is added, vacuum centrifugal drying dehydration is continuously carried out at the temperature of 60-70 ℃, the base carbon is sent into a granulator to be pressed, extruded and granulated after the vacuum centrifugal drying dehydration reaches 20-30%, and the strength of the granulated active base carbon is larger than 87%, and the particle size is 0.7-1.25 mm.
9. The method for preparing sterilized activated carbon according to claim 8, wherein: the mass ratio of the adhesive to the base carbon is 1: 7-1: 12; the vacuum degree of the vacuum centrifugal drying dehydration is 0.04MPa-0.08 MPa.
10. Use of the sterilized activated carbon product prepared according to any one of claims 1 to 9 in the fields of medicine, ventilation systems, water purification and decorative materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122371.9A CN112371084A (en) | 2020-10-20 | 2020-10-20 | Preparation method and application of sterilized activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011122371.9A CN112371084A (en) | 2020-10-20 | 2020-10-20 | Preparation method and application of sterilized activated carbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112371084A true CN112371084A (en) | 2021-02-19 |
Family
ID=74581637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011122371.9A Pending CN112371084A (en) | 2020-10-20 | 2020-10-20 | Preparation method and application of sterilized activated carbon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112371084A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113385173A (en) * | 2021-06-26 | 2021-09-14 | 昆明理工大学 | Preparation method and application of coral stacked biomass charcoal-based catalyst |
| CN115382506A (en) * | 2022-10-26 | 2022-11-25 | 成都天佑晶创科技有限公司 | Zinc-silver-copper loaded active carbon composite material and preparation method and application thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772375A (en) * | 2005-10-27 | 2006-05-17 | 南京大学 | Nanometer doped zinc oxide and its prepn and application in photocatalysis to degrade organic matter and kill bacteria |
| CN1788799A (en) * | 2004-12-13 | 2006-06-21 | 张贵洲 | Air deodorant agent |
| US20070297858A1 (en) * | 2006-06-27 | 2007-12-27 | James Imbrie | Method for remediating a contaminated site |
| DE202012005818U1 (en) * | 2011-06-17 | 2012-07-13 | BLüCHER GMBH | Porous materials based on metallic mixed oxides |
| CN103535376A (en) * | 2013-09-15 | 2014-01-29 | 浙江理工大学 | Preparation method of nanometer zinc oxide-bamboo charcoal composite particle with antibacterial and adsorption functions |
| DE202013102315U1 (en) * | 2013-04-06 | 2014-04-09 | BLüCHER GMBH | Activated carbon with special equipment |
| CN104383877A (en) * | 2014-11-05 | 2015-03-04 | 上海纳米技术及应用国家工程研究中心有限公司 | Rare-earth metal modified integral activated carbon absorbent as well as preparation method and application thereof |
| CN106110883A (en) * | 2016-07-13 | 2016-11-16 | 吴美燕 | A kind of preparation method of the air purifying preparation removing harmful gas |
| CN106334520A (en) * | 2015-07-09 | 2017-01-18 | 惠州市银嘉环保科技有限公司 | Antibacterial water-purification active carbon based on nano ZnO and preparation method and application thereof |
| CN106344948A (en) * | 2016-11-10 | 2017-01-25 | 四川长虹电器股份有限公司 | Composite material with sterilization and odor-removal functions as well as preparation method and use method thereof |
| CN106513004A (en) * | 2016-10-31 | 2017-03-22 | 山西新华化工有限责任公司 | Zirconium-loaded impregnation carbon defending against HCN and CNCl toxic agents and preparation method thereof |
| CN106582519A (en) * | 2016-11-30 | 2017-04-26 | 浙江众幸新材料科技有限公司 | Catalytic carbon for absorbing and preventing GB nerve agent and preparation method |
| CN108821751A (en) * | 2018-07-18 | 2018-11-16 | 江西省子轩科技有限公司 | A kind of antimicrobial form active carbon ceramic and preparation method thereof |
| CN109438937A (en) * | 2018-09-29 | 2019-03-08 | 万卓（武汉）新材料有限公司 | A kind of antimicrobial form PLA base degradable food packaging material and preparation method thereof |
-
2020
- 2020-10-20 CN CN202011122371.9A patent/CN112371084A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1788799A (en) * | 2004-12-13 | 2006-06-21 | 张贵洲 | Air deodorant agent |
| CN1772375A (en) * | 2005-10-27 | 2006-05-17 | 南京大学 | Nanometer doped zinc oxide and its prepn and application in photocatalysis to degrade organic matter and kill bacteria |
| US20070297858A1 (en) * | 2006-06-27 | 2007-12-27 | James Imbrie | Method for remediating a contaminated site |
| DE202012005818U1 (en) * | 2011-06-17 | 2012-07-13 | BLüCHER GMBH | Porous materials based on metallic mixed oxides |
| DE202013102315U1 (en) * | 2013-04-06 | 2014-04-09 | BLüCHER GMBH | Activated carbon with special equipment |
| CN103535376A (en) * | 2013-09-15 | 2014-01-29 | 浙江理工大学 | Preparation method of nanometer zinc oxide-bamboo charcoal composite particle with antibacterial and adsorption functions |
| CN104383877A (en) * | 2014-11-05 | 2015-03-04 | 上海纳米技术及应用国家工程研究中心有限公司 | Rare-earth metal modified integral activated carbon absorbent as well as preparation method and application thereof |
| CN106334520A (en) * | 2015-07-09 | 2017-01-18 | 惠州市银嘉环保科技有限公司 | Antibacterial water-purification active carbon based on nano ZnO and preparation method and application thereof |
| CN106110883A (en) * | 2016-07-13 | 2016-11-16 | 吴美燕 | A kind of preparation method of the air purifying preparation removing harmful gas |
| CN106513004A (en) * | 2016-10-31 | 2017-03-22 | 山西新华化工有限责任公司 | Zirconium-loaded impregnation carbon defending against HCN and CNCl toxic agents and preparation method thereof |
| CN106344948A (en) * | 2016-11-10 | 2017-01-25 | 四川长虹电器股份有限公司 | Composite material with sterilization and odor-removal functions as well as preparation method and use method thereof |
| CN106582519A (en) * | 2016-11-30 | 2017-04-26 | 浙江众幸新材料科技有限公司 | Catalytic carbon for absorbing and preventing GB nerve agent and preparation method |
| CN108821751A (en) * | 2018-07-18 | 2018-11-16 | 江西省子轩科技有限公司 | A kind of antimicrobial form active carbon ceramic and preparation method thereof |
| CN109438937A (en) * | 2018-09-29 | 2019-03-08 | 万卓（武汉）新材料有限公司 | A kind of antimicrobial form PLA base degradable food packaging material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 商平等: "《环境矿物材料》", 31 January 2008 * |
| 孙昊等: "活性炭孔隙结构对炭基金属氧化物催化剂", 《林产化学与工业》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113385173A (en) * | 2021-06-26 | 2021-09-14 | 昆明理工大学 | Preparation method and application of coral stacked biomass charcoal-based catalyst |
| CN115382506A (en) * | 2022-10-26 | 2022-11-25 | 成都天佑晶创科技有限公司 | Zinc-silver-copper loaded active carbon composite material and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5771274B2 (en) | Multi-aperture carbon particle air purifier and method for producing the same | |
| CN103623780B (en) | A kind of purification adsorption for sterilization material and application thereof | |
| WO2018068729A1 (en) | Air purification composite catalyst and preparation method thereof | |
| CN103752157B (en) | A kind of benzene homologues agent for capturing and preparation method thereof | |
| CN103521174B (en) | Indoor air purification material and preparation method thereof | |
| CN105688660B (en) | Using photocatalyst of titanium dioxide as material for air purification of base material and preparation method thereof | |
| CN112371084A (en) | Preparation method and application of sterilized activated carbon | |
| CN104667860A (en) | Adsorbent and preparation method thereof | |
| CN103752287B (en) | A kind of construction and decoration pollutant inorganic agent and preparation method thereof | |
| CN108636354A (en) | A kind of novel air cleanser and its preparation process | |
| CN103537255A (en) | Nanometer oxide ceramic purification and adsorption material with decomposition and bactericidal performance | |
| CN104446283A (en) | Diatom ooze wall material capable of efficiently purifying air or resisting against bacteria or automatically humidifying and preparation method of diatom ooze wall material | |
| CN113103680A (en) | Antibacterial, purifying and humidifying diatom cloth | |
| CN1225288C (en) | Deodorization air purifying agent | |
| CN110538553B (en) | Preparation method of tourmaline-based negative ion air purification functional composite filter material | |
| CN107243343A (en) | A kind of air cleaning catalytic composite material and preparation method thereof | |
| CN110237702A (en) | A kind of material for air purification and preparation method thereof | |
| KR100773913B1 (en) | Preparing method of filter member for heat exchanger | |
| CN108554388A (en) | Jie's micro porouse chitoglycan particle of the particle containing nano-catalytic and its application | |
| CN108771965A (en) | A kind of graphene composite filter material and preparation method thereof | |
| CN109399726B (en) | Preparation method of iron lanthanum oxide molecular sieve type purification material | |
| WO2021037023A1 (en) | Solid material for purifying air and preparation method and use thereof | |
| CN109011920B (en) | Antibacterial air filtering membrane | |
| CN108892196B (en) | Preparation method of water purification material | |
| CN110624408A (en) | Air purifying agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210219 |
|
| RJ01 | Rejection of invention patent application after publication |