CN116553541A - Method for preparing activated carbon and cementing material by cooperatively utilizing waste incineration fly ash and oil sludge - Google Patents
Method for preparing activated carbon and cementing material by cooperatively utilizing waste incineration fly ash and oil sludge Download PDFInfo
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- CN116553541A CN116553541A CN202310470474.1A CN202310470474A CN116553541A CN 116553541 A CN116553541 A CN 116553541A CN 202310470474 A CN202310470474 A CN 202310470474A CN 116553541 A CN116553541 A CN 116553541A
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- oil sludge
- fly ash
- waste incineration
- activated carbon
- incineration fly
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 239000010802 sludge Substances 0.000 title claims abstract description 112
- 239000000463 material Substances 0.000 title claims abstract description 92
- 239000010881 fly ash Substances 0.000 title claims abstract description 76
- 238000004056 waste incineration Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 53
- 239000002893 slag Substances 0.000 claims abstract description 97
- 239000000843 powder Substances 0.000 claims abstract description 65
- 238000003763 carbonization Methods 0.000 claims abstract description 64
- GCICAPWZNUIIDV-UHFFFAOYSA-N lithium magnesium Chemical compound [Li].[Mg] GCICAPWZNUIIDV-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 32
- 239000010440 gypsum Substances 0.000 claims abstract description 32
- 238000001354 calcination Methods 0.000 claims abstract description 25
- 239000002956 ash Substances 0.000 claims description 52
- 238000003756 stirring Methods 0.000 claims description 50
- 239000002245 particle Substances 0.000 claims description 29
- 238000005303 weighing Methods 0.000 claims description 28
- 238000000227 grinding Methods 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000032683 aging Effects 0.000 claims description 11
- 238000007667 floating Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- 238000003837 high-temperature calcination Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 30
- 238000000926 separation method Methods 0.000 abstract description 15
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 abstract description 13
- 229910052740 iodine Inorganic materials 0.000 abstract description 13
- 239000011630 iodine Substances 0.000 abstract description 13
- 238000001179 sorption measurement Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 9
- 238000006555 catalytic reaction Methods 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 76
- 239000000126 substance Substances 0.000 description 11
- 239000000395 magnesium oxide Substances 0.000 description 9
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 9
- 239000004568 cement Substances 0.000 description 8
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 8
- 239000010813 municipal solid waste Substances 0.000 description 8
- 238000011056 performance test Methods 0.000 description 8
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 7
- 239000000920 calcium hydroxide Substances 0.000 description 7
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000005539 carbonized material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000004523 catalytic cracking Methods 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 3
- IQYKECCCHDLEPX-UHFFFAOYSA-N chloro hypochlorite;magnesium Chemical compound [Mg].ClOCl IQYKECCCHDLEPX-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 229920000876 geopolymer Polymers 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- 239000000391 magnesium silicate Substances 0.000 description 3
- 229910052919 magnesium silicate Inorganic materials 0.000 description 3
- 235000019792 magnesium silicate Nutrition 0.000 description 3
- ZADYMNAVLSWLEQ-UHFFFAOYSA-N magnesium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[Mg+2].[Si+4] ZADYMNAVLSWLEQ-UHFFFAOYSA-N 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- OLZDXDPSDUSGIS-UHFFFAOYSA-N sulfinylmagnesium Chemical compound [Mg].S=O OLZDXDPSDUSGIS-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 229910001424 calcium ion Inorganic materials 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 239000010779 crude oil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- NFMWFGXCDDYTEG-UHFFFAOYSA-N trimagnesium;diborate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]B([O-])[O-].[O-]B([O-])[O-] NFMWFGXCDDYTEG-UHFFFAOYSA-N 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 231100000378 teratogenic Toxicity 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/33—Preparation characterised by the starting materials from distillation residues of coal or petroleum; from petroleum acid sludge
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge, which has simple preparation process, and is beneficial to accelerating the catalysis of oil sludge carbonization and overcoming the problems in the oil sludge carbonization process by premixing the oil sludge, extracting lithium magnesium slag from salt lake and the waste incineration fly ash, and simultaneously can activate the oil sludge, extracting lithium magnesium slag from salt lake and the cementing activity of the waste incineration fly ash by cracking carbonized products of the oil sludge, thereby promoting the separation slag, gypsum and tuff powder to fully react under the calcination condition. The maximum iodine adsorption value of the activated carbon prepared by the invention is 921.65mg/g, and the maximum specific surface area is 824.43m2/g; the highest strength of the prepared cementing material can be 67.89MPa.
Description
Technical Field
The invention belongs to the technical research and development field of hazardous waste resource utilization, and particularly relates to a method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge.
Background
The incineration power generation technology not only can realize the rapid reduction of household garbage, but also can utilize garbage combustion heat to generate electric power. Considering that the garbage incineration process can generate a large amount of toxic and harmful smoke, the garbage incineration power generation process is usually provided with a complete smoke treatment system. And a great amount of waste incineration fly ash is generated in the waste incineration flue gas treatment process. The fly ash from garbage incineration is fluidized bed ash and fire grate ash, and both are listed as dangerous waste due to the heavy metal and dioxin pollutants contained in the fly ash. The fly ash output of the waste incineration is increased year by year, and the annual output of the fly ash in China is expected to reach 1.3 multiplied by 107 tons by 2025. Therefore, the realization of the efficient treatment of the waste incineration fly ash is very important for protecting the ecological environment and realizing the sustainable development of the waste incineration power generation.
Sludge is a viscous, black solid (or semi-solid) mixture produced during crude oil extraction, storage, transportation, and crude oil smelting. The oil sludge consists of water, composite emulsifier, a small amount of heavy metal, sediment, various chemical agent residues and the like, and contains various toxic substances such as: benzene series, phenol, anthracene, pyrene, heavy metal, sulfide and the like are toxic, carcinogenic and teratogenic, and any emission not only can pollute the ecological environment, but also can seriously endanger the health of human beings. Thus, sludge is also classified as hazardous solid waste (HW 08).
The preparation of activated carbon by using the oil sludge is one of the important directions for realizing the recycling of the oil sludge. However, the sludge itself has a high water content and a high viscosity, and thus has low dehydration and carbonization efficiency. The waste incineration fly ash has higher calcium content, good water absorption effect, various inorganic salts and the potential of realizing the enhanced carbonization and pyrolysis of the oil sludge. Therefore, a method for preparing the activated carbon and the cementing material by cooperatively utilizing the waste incineration fly ash and the oil sludge is developed, and the resource utilization path for synchronously realizing the waste incineration fly ash and the oil sludge is widened.
Disclosure of Invention
The invention aims to: the invention aims to solve the technical problem of providing a method for preparing activated carbon with iodine adsorption value and larger specific surface area and high-strength cementing material by cooperatively utilizing waste incineration fly ash and oil sludge.
The technical scheme is as follows: in order to solve the technical problems, the invention provides a method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge, which comprises the following steps:
1) Respectively weighing oil sludge, lithium magnesium slag extracted from salt lakes and waste incineration fly ash, stirring, extruding, granulating and aging to obtain oil sludge ash raw materials;
2) Introducing the sludge ash raw material into a carbonization furnace for carbonization treatment, taking out and cooling to room temperature to obtain carbonized ash slag;
3) Grinding the carbonized ash material to obtain carbonized ash material fine powder;
4) Respectively weighing water and carbonized ash material fine powder, stirring, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the bottom solid part to obtain separated slag;
5) Cleaning and drying black suspended particles recovered by floatation to obtain active carbon;
6) Respectively weighing gypsum, tuff powder and separated slag, uniformly stirring, calcining at high temperature, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material.
Wherein the mass ratio of the oil sludge to the lithium magnesium slag extracted from the salt lake in the step 1) to the waste incineration fly ash is 20-50:20-50:100.
Wherein, the stirring speed in the step 1) is 30-360 rpm, the stirring time is 0.5-1.5 hours, and the aging time is 2-6 days.
Wherein, the carbonization temperature in the step 2) is 300-900 ℃ and the carbonization time is 0.5-5.5 hours.
Wherein the grinding time in the step 3) is 0.5-2.5 hours.
Wherein, the liquid-solid ratio of the water to the carbonized ash slag fine powder in the step 4) is 1-4:1 g/mL.
Wherein, the stirring speed in the step 4) is 30-360 rpm, and the stirring time is 0.5-2.5 hours.
Wherein, in the step 6), the mass ratio of the gypsum to the tuff powder to the separation slag is 5-15:40-80:100.
Wherein the high-temperature calcination temperature in the step 6) is 900-1300 ℃.
Wherein the high temperature calcination time in step 6) is 0.5-4.5 hours.
The reaction mechanism of the invention: mixing the oil sludge, the lithium magnesium extracted from the salt lake and the waste incineration fly ash, and dissolving and transferring a small amount of sodium chloride, potassium chloride and a small amount of calcium ions in the waste incineration fly ash and a small amount of magnesium ions in the lithium magnesium extracted from the salt lake into the oil sludge pore liquid in the stirring and granulating processes. Meanwhile, in the mixing and stirring processes, calcium oxide in the waste incineration fly ash reacts with water to generate calcium hydroxide, and the calcium hydroxide mixes strong magnesium oxide and magnesium borate in the lithium magnesium slag extracted from the salt lake, so that hydroxide ion bodies are released, and oil-based substances in the oil sludge are efficiently adsorbed. Meanwhile, the oil sludge has good viscosity, and can well bond and wrap the fly ash and the lithium magnesium extracted from the salt lake. In the high-temperature carbonization process, calcium hydroxide and strong magnesium oxide are heated to decompose, and the generated calcium oxide and magnesium oxide can well catalyze cracking and carbonization of oil-based substances. Meanwhile, inorganic salt permeated into the oil sludge pore liquid moves rapidly in the oil sludge, and catalytic cracking of oil-based substances is further accelerated through catalysis and carbothermal chlorination, so that high-porosity activated carbon is induced. Meanwhile, the oil-based substance decomposition derivative of the oil sludge in the carbonization process can activate the gelling activity of the oil sludge, the lithium-magnesium slag extracted from the salt lake and the fly ash generated by waste incineration, so that the material fusion is promoted. And grinding carbonized ash slag, separating active carbon from ash slag in the grinding process, adding water, stirring, and floating the active carbon to the surface of the liquid in the aeration process, and sinking the ash slag to realize the separation of the active carbon from the ash slag. Mixing the separated slag, gypsum and tuff powder, and fully reacting the three materials in the calcination process to form the magnesium oxychloride, magnesium oxysulfide, magnesium silicate and geopolymer blended high-activity gelling (cement) material (a scanning electron microscope image is shown in figure 2).
The beneficial effects are that: compared with the prior art, the invention has the following advantages: the preparation process is simple, and the method is beneficial to accelerating the carbonization of catalytic oil sludge by premixing the oil sludge, extracting lithium magnesium slag from salt lakes and incinerating fly ash by garbage, overcomes the problems existing in the carbonization process of the oil sludge, and can also promote the full reaction of separated slag, gypsum and tuff powder under the calcination condition by activating the oil sludge by cracking carbonized products of the oil sludge, extracting lithium magnesium slag from salt lakes and gelling activity of the incinerated fly ash by garbage. The activated carbon prepared by the invention has the maximum iodine adsorption value of 921.65mg/g and the maximum specific surface area of 824.43m 2 /g; the highest strength of the prepared cementing material can be 67.89MPa.
Drawings
FIG. 1 is a flow chart of the process of the present invention;
FIG. 2 scanning electron microscope image of magnesium oxychloride, magnesium oxysulfide, magnesium silicate, and geopolymer blended highly active cementitious (cement) materials.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Oil sludge: the sludge was obtained from a petroleum refinery of Shaanxi and contains 34.51% extract oil, 21.73% heavy oil, 27.44% slag and 16.32% water.
Waste incineration fly ash: the waste incineration fly ash is obtained from a company of a waste incineration power plant which is commonly mature in Jiangsu, and mainly comprises 36.2 percent of CaO, 23.9 percent of Cl and 11.0 percent of SO 3 、11.6％Na 2 O、6.33％K 2 O、4.38％SiO 2 、1.40％Fe 2 O 3 、1.25％Al 2 O 3 And other components (unavoidable impurities and loss on ignition).
Tuff powder: tuff powder is obtained from Xinyang city flat bridge regionThe stone quarry of Wuli Zhenqiao village Yang Waxi mainly comprises 77.98% SiO 2 、11.44％Al 2 O 3 、7.28％K 2 O、1.18％Na 2 O、1.08％Fe 2 O 3 、0.35％CaO、0.17％MgO、0.13％TiO 2 And other components (unavoidable impurities and loss on ignition);
extracting lithium magnesium slag from salt lake: the lithium magnesium slag extracted from salt lake is obtained from Qinghai Zhongxin national Antechnique Co., ltd, and mainly comprises 61.34% Mg 2+ 、5.12％B 2 O 3 、1.04Cl - 、0.63％[SO 4 ] 2- 、0.57％Na + 、0.42％Ca 2+ 、0.36％Li + 、0.06％K + 30.46% loss on ignition.
Gypsum: gypsum is from AR,99% of the ara-latin biochemical technologies, inc.
Example 1 influence of sludge, lithium magnesium slag extracted from salt lake and fly ash from refuse incineration on the Performance of the prepared activated carbon and gel Material
The sludge, the lithium-magnesium slag extracted from salt lake and the waste incineration fly ash are respectively weighed according to the mass ratio of 20:5:100, 20:10:100, 20:15:100, 5:20:100, 10:20:100, 15:20:100, 20:20:100, 35:20:100, 30:20:100, 20:33:100, 35:35:100, 50:35:100, 20:50:100, 35:50:100, 50:50:100, 55:50:100, 60:50:100, 65:50:100, 50:55:100, 50:60:100 and 50:65:100, respectively stirred for 0.5 hour under the rotating speed of 30rpm, extruded and granulated, aged for 2 days, and the sludge ash raw material is obtained. Introducing the sludge slag ash raw material into a carbonization furnace for carbonization treatment for 0.5 hour, taking out and cooling to room temperature to obtain carbonized slag material, wherein the carbonization temperature is 300 ℃. Grinding the carbonized ash material for 0.5 hour to obtain carbonized ash material fine powder. Respectively weighing fine powder of water and carbonized ash according to the liquid-solid ratio of 1:1 g/mL, stirring for 0.5 hour at the rotating speed of 30rpm, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the solid part at the bottom to obtain separated slag. And (3) cleaning and drying the black suspended particles recovered by floatation to obtain the activated carbon. And (3) recovering the separated slag, respectively weighing gypsum, tuff powder and the separated slag according to the mass ratio of 5:40:100, uniformly stirring, calcining at high temperature for 0.5 hour, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material, wherein the calcining temperature is 900 ℃.
Strength performance test: the cementing material prepared by the invention is prepared into tested gel sand, the preparation of the gel sand, the preparation of a test piece, the maintenance of the test piece, the selection of the age of the test piece and the 28-day compressive strength (P 28 MPa) are all carried out according to the standard of the cement mortar strength test method (ISO method) GB/T17671-1999. The test piece is prepared by adopting ISO standard sand specified in the method for testing cement mortar strength (ISO method) GB/T17671-1999.
Activated carbon performance test: the activated carbon powder prepared by the invention is used for measuring the iodine adsorption value according to the method for measuring the iodine adsorption value of the coal particle activated carbon test method (GB/T7702.7-2008); the specific surface area of the activated carbon powder prepared by the invention is measured according to the method for measuring specific surface area of coal particle activated carbon test (GB/T7702.21-1997).
TABLE 1 influence of mass ratio of sludge, lithium magnesium slag extracted from salt lake and fly ash from garbage incineration on performance of prepared activated carbon and cementing material
As can be seen from table 1, when the mass ratio of the sludge, the salt lake lithium magnesium slag, and the waste incineration fly ash is less than 20:20:100 (as in table 1, the mass ratio of the sludge, the salt lake lithium magnesium slag, and the waste incineration fly ash=20:15:100, 20:10:100, 20:5:100, 15:20:100, 10:20:100, and 5:20:100, and lower ratios not listed in table 1), the sludge and the salt lake lithium magnesium slag are added less, and the waste incineration fly ash is added too much, resulting in that the iodine adsorption value, the specific surface area, and the strength of the prepared gel material of the activated carbon are significantly reduced as the mass ratio of the sludge, the salt lake lithium magnesium slag, and the waste incineration fly ash is reduced. When the mass ratio of the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash is equal to 20-50:20-50:100 (as in table 1, the mass ratio of the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash=20:20:100, 35:20:100, 50:20:100, 20:35:100, 35:35:100, 50:35:100, 20:50:100, 35:50:100 and 50:50:100), the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash are mixed, and sodium chloride, potassium chloride and a small amount of calcium ions in the waste incineration fly ash are dissolved and migrate into the pore liquid of the oil sludge in the process of stirring and granulating. Meanwhile, in the mixing and stirring processes, calcium oxide in the waste incineration fly ash reacts with water to generate calcium hydroxide, and the calcium hydroxide mixes strong magnesium oxide and magnesium borate in the lithium magnesium slag extracted from the salt lake, so that hydroxide ion bodies are released, and oil-based substances in the oil sludge are efficiently adsorbed. Meanwhile, the oil sludge has good viscosity, and can well bond and wrap the fly ash and the lithium magnesium extracted from the salt lake. In the high-temperature carbonization process, calcium hydroxide and strong magnesium oxide are heated to decompose, and the generated calcium oxide and magnesium oxide can well catalyze cracking and carbonization of oil-based substances. Meanwhile, inorganic salt permeated into the oil sludge pore liquid moves rapidly in the oil sludge, and catalytic cracking of oil-based substances is further accelerated through catalysis and carbothermal chlorination, so that high-porosity activated carbon is induced. Meanwhile, the oil-based substance decomposition derivative of the oil sludge in the carbonization process can activate the gelling activity of the oil sludge, the lithium-magnesium slag extracted from the salt lake and the fly ash generated by waste incineration, so that the material fusion is promoted. Finally, the iodine adsorption values of the prepared activated carbon are higher than 876mg/g, the specific surface areas of the activated carbon are higher than 784mg/g, and the gel strengths are higher than 54MPa. When the mass ratio of the sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash is greater than 50:50:100 (as in table 1, the mass ratio of the sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash=55:50:100, 60:50:100, 65:50:100, 50:55:100, 50:60:100, 50:65:100 and the higher ratio not listed in table 1), the mixing amount of the sludge and the lithium magnesium slag extracted from the salt lake is excessive, the carbonization catalysis and the material reaction are insufficient, so that the iodine adsorption value, the specific surface area and the strength of the prepared gel material of the prepared activated carbon are remarkably reduced as the mass ratio of the sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash is further increased. Finally, in general, the benefits and the cost are combined, and when the mass ratio of the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash is equal to 20-50:20-50:100, the performance of the prepared activated carbon and the cementing material is most favorable to be improved.
EXAMPLE 2 influence of carbonization time on the Properties of the activated carbon and the cementing Material prepared
Respectively weighing the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash according to the mass ratio of 50:50:100, stirring for 1 hour at the rotating speed of 195rpm, extruding and granulating, and aging for 4 days to obtain the oil sludge ash raw material. And (3) introducing the sludge ash raw material into a carbonization furnace for carbonization treatment, wherein the carbonization time is 0.25 hour, 0.3 hour, 0.4 hour, 0.5 hour, 3 hours, 5.5 hours, 6 hours, 6.5 hours and 7 hours, taking out and cooling to room temperature to obtain carbonized ash slag, and the carbonization temperature is 600 ℃. Grinding the carbonized ash material for 1.5 hours to obtain carbonized ash material fine powder. Respectively weighing fine powder of water and carbonized ash and slag according to the liquid-solid ratio of 2.5:1 g/mL, stirring for 1.5 hours at the rotating speed of 195rpm, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the solid part at the bottom to obtain separated slag. And (3) cleaning and drying the black suspended particles recovered by floatation to obtain the activated carbon. And (3) recovering the separated slag, respectively weighing gypsum, tuff powder and the separated slag according to the mass ratio of 10:60:100, uniformly stirring, calcining at high temperature for 2.5 hours, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material, wherein the calcining temperature is 1050 ℃.
The strength performance test and the activated carbon performance test are the same as in example 1, and the results of this example are shown in Table 2.
TABLE 2 influence of carbonization time on the properties of the prepared activated carbon and gelling materials
As can be seen from table 2, when the carbonization time is less than 0.5 hours (as in table 2, carbonization time=0.4 hours, 0.3 hours, 0.25 hours, and lower values not listed in table 2), the carbonization time is insufficient, the sludge carbonization and the material activation reaction are insufficient, resulting in a significant decrease in the iodine adsorption value, the specific surface area, and the strength of the prepared cement material with a decrease in the carbonization time. When the carbonization time is equal to 0.5-5.5 hours (as in table 2, carbonization time=0.5 hours, 3 hours, 5.5 hours), calcium hydroxide and strong magnesium oxide are decomposed by heating in the high-temperature carbonization process, and the generated calcium oxide and magnesium oxide can well catalyze the cracking and carbonization of oil-based substances. Meanwhile, inorganic salt permeated into the oil sludge pore liquid moves rapidly in the oil sludge, and catalytic cracking of oil-based substances is further accelerated through catalysis and carbothermal chlorination, so that high-porosity activated carbon is induced. Meanwhile, the oil-based substance decomposition derivative of the oil sludge in the carbonization process can activate the gelling activity of the oil sludge, the lithium-magnesium slag extracted from the salt lake and the fly ash generated by waste incineration, so that the material fusion is promoted. Finally, the iodine adsorption values of the prepared activated carbon are higher than 896mg/g, the specific surface areas of the activated carbon are higher than 806mg/g, and the gel strengths are higher than 61MPa. When the carbonization time is more than 5.5 hours (as in table 2, carbonization time=6 hours, 6.5 hours, 7 hours, and higher values not listed in table 2), the carbonization time is excessively long, the carbon structure collapses, and the material is excessively burned, resulting in a significant decrease in the iodine adsorption value, specific surface area, and strength of the prepared cement material as the carbonization time is further prolonged. Finally, overall, the benefits and costs are combined, and when the carbonization time is equal to 0.5-5.5 hours, the improvement of the prepared activated carbon and the cementing material performance is most facilitated.
Example 3 influence of the mass ratio of Gypsum, tuff powder and separated slag on the Performance of the prepared activated carbon and cementitious Material
Respectively weighing the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash according to the mass ratio of 50:50:100, stirring for 1.5 hours at the rotating speed of 360rpm, extruding and granulating, and aging for 6 days to obtain the oil sludge ash raw material. Introducing the sludge slag ash raw material into a carbonization furnace for carbonization treatment for 5.5 hours, taking out and cooling to room temperature to obtain carbonized slag material, wherein the carbonization temperature is 900 ℃. And grinding the carbonized ash material for 2.5 hours to obtain carbonized ash material fine powder. Respectively weighing fine powder of water and carbonized ash according to the liquid-solid ratio of 4:1 g/mL, stirring for 2.5 hours at the rotating speed of 360rpm, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the solid part at the bottom to obtain separated slag. And (3) cleaning and drying the black suspended particles recovered by floatation to obtain the activated carbon. The separation slag is recycled, gypsum, tuff powder and separation slag are respectively weighed according to the mass ratio of 5:25:100, 5:30:100, 5:35:100, 2.5:40:100, 3:40:100, 4:40:100, 5:40:100, 10:40:100, 15:40:100, 5:60:100, 10:60:100, 15:60:100, 5:80:100, 10:80:100, 15:80:100, 17:80:100, 19:80:100, 20:80:100, 15:85:100, 15:90:100 and 15:95:100, the mixture is stirred uniformly, the calcined material is taken out and cooled to room temperature after calcination for 4.5 hours, and is ground into powder, so that the fly ash oil sludge high-efficiency cementing material is obtained, wherein the calcination temperature is 1300 ℃.
The strength performance test and the activated carbon performance test are the same as in example 1, and the results of this example are shown in Table 3.
TABLE 3 influence of mass ratio of Gypsum, tuff powder and separation slag on the Performance of the prepared activated carbon and cementitious Material
As can be seen from Table 3, the iodine adsorption value and specific surface area of the activated carbon are not significantly changed with the mass ratio of the gypsum, tuff powder and separation slag, the iodine adsorption value is higher than 907mg/g, and the specific surface area of the activated carbon is higher than 816mg/g. When the mass ratio of gypsum, tuff powder, and separation slag is less than 5:40:100 (as in table 3, the mass ratio of gypsum, tuff powder, separation slag=5:35:100, 5:30:100, 5:25:100, 4:40:100, 3:40:100, 2.5:40:100, and lower ratios not listed in table 3), the gypsum and tuff powder are added less, and the three materials are insufficiently reacted during calcination, resulting in a significant decrease in the strength of the produced cement as the mass ratio of gypsum, tuff powder, and separation slag is reduced. When the mass ratio of gypsum, tuff powder, and separation slag is equal to 5-15:40-80:100 (as in table 3, gypsum, tuff powder, separation slag mass ratio=5:40:100, 10:40:100, 15:40:100, 5:60:100, 10:60:100, 5:80:100, 10:80:100, 15:80:100), the three materials react sufficiently during calcination to form magnesium oxychloride, magnesium oxysulfide, magnesium silicate, and geopolymer blended high-activity cementitious (cement) material. Finally, the strength of the prepared cementing material is higher than 64MPa. When the mass ratio of gypsum, tuff powder, separation slag is greater than 15:80:100 (as in table 3, gypsum, tuff powder, separation slag mass ratio = 17:80:100, 19:80:100, 20:80:100, 15:85:100, 15:90:100, 15:95:100, and higher ratios not listed in table 3), the gypsum and tuff powder are added in excess, the cement activity decreases, resulting in a significant decrease in the strength of the prepared cement as the mass ratio of gypsum, tuff powder, separation slag increases further. Finally, in general, the combination of benefits and costs is most beneficial to improving the performance of the prepared activated carbon and cementing material when the mass ratio of gypsum, tuff powder and separated slag is equal to 5-15:40-80:100.
Comparative example influence of different technologies on the properties of the prepared activated carbon and cementing material
The process comprises the following steps: respectively weighing the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash according to the mass ratio of 50:50:100, stirring for 1.5 hours at the rotating speed of 360rpm, extruding and granulating, and aging for 6 days to obtain the oil sludge ash raw material. Introducing the sludge slag ash raw material into a carbonization furnace for carbonization treatment for 5.5 hours, taking out and cooling to room temperature to obtain carbonized slag material, wherein the carbonization temperature is 900 ℃. And grinding the carbonized ash material for 2.5 hours to obtain carbonized ash material fine powder. Respectively weighing fine powder of water and carbonized ash according to the liquid-solid ratio of 4:1 g/mL, stirring for 2.5 hours at the rotating speed of 360rpm, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the solid part at the bottom to obtain separated slag. And (3) cleaning and drying the black suspended particles recovered by floatation to obtain the activated carbon. And (3) recycling the separated slag, respectively weighing gypsum, tuff powder and the separated slag according to the mass ratio of 15:80:100, uniformly stirring, calcining at high temperature for 4.5 hours, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material (the electron microscope diagram of which is shown in figure 2), wherein the calcining temperature is 1300 ℃.
Comparison Process 1: respectively weighing the oil sludge and the waste incineration fly ash according to the mass ratio of 50:100, stirring for 1.5 hours at the rotating speed of 360rpm, extruding and granulating, and aging for 6 days to obtain the oil sludge ash raw material. And (3) introducing the putty raw material into a carbonization furnace for carbonization treatment, wherein the carbonization time is 5.5 hours, taking out and cooling to room temperature to obtain carbonized putty, and the carbonization temperature is 900 ℃. Grinding the carbonized ash material for 2.5 hours to obtain carbonized ash material fine powder. Respectively weighing water and carbonized ash material fine powder according to the liquid-solid ratio of 4:1 g/mL, stirring for 2.5 hours at the rotating speed of 360rpm, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the solid part at the bottom to obtain separated slag. And (3) cleaning and drying the black suspended particles recovered by floatation to obtain the activated carbon. And (3) recovering the separated slag, respectively weighing gypsum, tuff powder and the separated slag according to the mass ratio of 15:80:100, uniformly stirring, calcining at high temperature for 4.5 hours, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material, wherein the calcining temperature is 1300 ℃.
Comparison process 2: respectively weighing the oil sludge and the lithium magnesium extracted from the salt lake according to the mass ratio of 50:50, stirring for 1.5 hours at the rotating speed of 360rpm, extruding and granulating, and aging for 6 days to obtain the oil sludge. Introducing the sludge into a carbonization furnace for carbonization treatment for 5.5 hours, taking out and cooling to room temperature to obtain carbonized sludge, wherein the carbonization temperature is 900 ℃. Grinding the carbonized ash for 2.5 hours to obtain carbonized ash fine powder. Respectively weighing fine powder of water and carbonized ash according to the liquid-solid ratio of 4:1 g/mL, stirring for 2.5 hours at the rotating speed of 360rpm, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the solid part at the bottom to obtain separated slag. And (3) cleaning and drying the black suspended particles recovered by floatation to obtain the activated carbon. And (3) recovering the separated slag, respectively weighing gypsum, tuff powder and the separated slag according to the mass ratio of 15:80:100, uniformly stirring, calcining at high temperature for 4.5 hours, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material, wherein the calcining temperature is 1300 ℃.
Contrast process 3: respectively weighing lithium magnesium slag extracted from salt lake and waste incineration fly ash according to the mass ratio of 50:100, stirring for 1.5 hours at the rotating speed of 360rpm, extruding and granulating, and aging for 6 days to obtain slag ash raw material. And (3) introducing the slag ash raw material into a carbonization furnace for carbonization treatment for 5.5 hours, taking out and cooling to room temperature to obtain slag clinker, wherein the carbonization temperature is 900 ℃. And grinding the clinker for 2.5 hours to obtain clinker fine powder. Respectively weighing gypsum, tuff powder and clinker fine powder according to the mass ratio of 15:80:100, stirring uniformly, calcining at high temperature for 4.5 hours, taking out the calcined material, cooling to room temperature, grinding into powder, and obtaining the fly ash oil sludge high-efficiency cementing material, wherein the calcining temperature is 1300 ℃.
Comparison process 4: and (3) introducing the oil sludge into a carbonization furnace for carbonization treatment for 5.5 hours, taking out and cooling to room temperature to obtain carbonized materials, wherein the carbonization temperature is 900 ℃. Grinding the carbonized material for 2.5 hours to obtain carbonized material fine powder. Respectively weighing water and carbonized material fine powder according to the liquid-solid ratio of 4:1 g/mL, stirring for 2.5 hours at the rotating speed of 360rpm, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and settling the black suspended particles at the bottom of the slurry into the solid part at the bottom to obtain separated slag. And (3) cleaning and drying the black suspended particles recovered by floatation to obtain the activated carbon. And (3) recovering the separated slag, respectively weighing gypsum, tuff powder and the separated slag according to the mass ratio of 15:80:100, uniformly stirring, calcining at high temperature for 4.5 hours, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material, wherein the calcining temperature is 1300 ℃.
Comparison process 5: respectively weighing the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash according to the mass ratio of 50:50:100, stirring for 1.5 hours at the rotating speed of 360rpm, extruding and granulating, and aging for 6 days to obtain the oil sludge ash raw material. Respectively weighing gypsum, tuff powder and sludge slag ash raw material according to the mass ratio of 15:80:100, uniformly stirring, calcining at high temperature for 4.5 hours, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash sludge high-efficiency cementing material, wherein the calcining temperature is 1300 ℃.
The strength performance test and the activated carbon performance test are the same as in example 1, and the results of this example are shown in Table 4.
TABLE 4 influence of different Processes on the Performance of the prepared activated carbon and gelling Material
As can be seen from Table 4, the performance of the activated carbon and the cementing material prepared by the process of the invention is obviously better than those of the activated carbon and the cementing material prepared by the comparative process 1, the comparative process 2, the comparative process 3, the comparative process 4 and the comparative process 5.
Claims (10)
1. The method for preparing the activated carbon and the cementing material by cooperatively utilizing the waste incineration fly ash and the oil sludge is characterized by comprising the following steps of:
1) Respectively weighing oil sludge, lithium magnesium slag extracted from salt lakes and waste incineration fly ash, stirring, extruding, granulating and aging to obtain oil sludge ash raw materials;
2) Introducing the sludge ash raw material into a carbonization furnace for carbonization treatment, taking out and cooling to room temperature to obtain carbonized ash slag;
3) Grinding the carbonized ash material to obtain carbonized ash material fine powder;
4) Respectively weighing water and carbonized ash material fine powder, stirring, then aerating the bottom of the stirring slurry, floating and recovering black suspended particles at the top of the slurry, and sinking the black suspended particles into the bottom solid part to obtain separated slag;
5) Cleaning and drying black suspended particles recovered by floatation to obtain active carbon;
6) Respectively weighing gypsum, tuff powder and separated slag, uniformly stirring, calcining at high temperature, taking out the calcined material, cooling to room temperature, and grinding into powder to obtain the fly ash oil sludge high-efficiency cementing material.
2. The method for preparing the activated carbon and the cementing material by cooperatively utilizing the waste incineration fly ash and the oil sludge, which is disclosed in claim 1, is characterized in that the mass ratio of the oil sludge, the lithium magnesium slag extracted from the salt lake and the waste incineration fly ash in the step 1) is 20-50:20-50:100.
3. The method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge according to claim 1, wherein the stirring speed in the step 1) is 30-360 rpm, the stirring time is 0.5-1.5 hours, and the aging time is 2-6 days.
4. The method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge according to claim 1, wherein the carbonization temperature in the step 2) is 300-900 ℃ and the carbonization time is 0.5-5.5 hours.
5. The method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge according to claim 1, wherein the grinding time in the step 3) is 0.5-2.5 hours.
6. The method for preparing the activated carbon and the cementing material by cooperatively utilizing the waste incineration fly ash and the oil sludge according to claim 1, wherein the liquid-solid ratio of the water to the carbonized ash fine powder in the step 4) is 1-4:1 g/mL.
7. The method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge according to claim 1, wherein the stirring speed in the step 4) is 30-360 rpm, and the stirring time is 0.5-2.5 hours.
8. The method for preparing the activated carbon and the cementing material by cooperatively utilizing the waste incineration fly ash and the oil sludge according to claim 1, wherein in the step 6), the mass ratio of gypsum, tuff powder and separated slag is 5-15:40-80:100.
9. The method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge according to claim 1, wherein the high-temperature calcination temperature in the step 6) is 900-1300 ℃.
10. The method for preparing activated carbon and a cementing material by cooperatively utilizing waste incineration fly ash and oil sludge according to claim 1, wherein the high-temperature calcination time in the step 6) is 0.5-4.5 hours.
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| CN116947342A (en) * | 2023-09-18 | 2023-10-27 | 常熟理工学院 | Method for preparing cement by utilizing lithium magnesium slag extracted from salt lake and waste incineration fly ash and product thereof |
| CN118127315A (en) * | 2024-05-08 | 2024-06-04 | 常熟理工学院 | Method for recycling high-grade composite heavy metal material and product thereof |
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| CN116947342A (en) * | 2023-09-18 | 2023-10-27 | 常熟理工学院 | Method for preparing cement by utilizing lithium magnesium slag extracted from salt lake and waste incineration fly ash and product thereof |
| CN116947342B (en) * | 2023-09-18 | 2024-02-23 | 常熟理工学院 | Method for preparing cement by utilizing lithium magnesium slag extracted from salt lake and waste incineration fly ash and product thereof |
| CN118127315A (en) * | 2024-05-08 | 2024-06-04 | 常熟理工学院 | Method for recycling high-grade composite heavy metal material and product thereof |
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