CN114196456A - Preparation method of derived fuel of scrap car crushing residue - Google Patents
Preparation method of derived fuel of scrap car crushing residue Download PDFInfo
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- CN114196456A CN114196456A CN202111518372.XA CN202111518372A CN114196456A CN 114196456 A CN114196456 A CN 114196456A CN 202111518372 A CN202111518372 A CN 202111518372A CN 114196456 A CN114196456 A CN 114196456A
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- 239000000446 fuel Substances 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 27
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000292 calcium oxide Substances 0.000 claims abstract description 24
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003245 coal Substances 0.000 claims abstract description 24
- 239000003607 modifier Substances 0.000 claims abstract description 23
- 229920000642 polymer Polymers 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 7
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 7
- 230000002708 enhancing effect Effects 0.000 claims abstract description 5
- 238000000748 compression moulding Methods 0.000 claims abstract description 4
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 238000001035 drying Methods 0.000 claims description 14
- 238000012216 screening Methods 0.000 claims description 13
- 238000000227 grinding Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 239000005060 rubber Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 239000011152 fibreglass Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000010419 fine particle Substances 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 3
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 3
- 229920001684 low density polyethylene Polymers 0.000 claims description 3
- 239000004702 low-density polyethylene Substances 0.000 claims description 3
- 239000002923 metal particle Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920005629 polypropylene homopolymer Polymers 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000012209 synthetic fiber Substances 0.000 claims description 3
- 229920002994 synthetic fiber Polymers 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 238000005056 compaction Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003473 refuse derived fuel Substances 0.000 description 2
- 239000002904 solvent Substances 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
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 150000004074 biphenyls Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000185 dioxinlike effect Effects 0.000 description 1
- USIUVYZYUHIAEV-UHFFFAOYSA-N diphenyl ether Chemical class C=1C=CC=CC=1OC1=CC=CC=C1 USIUVYZYUHIAEV-UHFFFAOYSA-N 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
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- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- -1 sawdust Substances 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/40—Solid fuels essentially based on materials of non-mineral origin
- C10L5/46—Solid fuels essentially based on materials of non-mineral origin on sewage, house, or town refuse
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/08—Methods of shaping, e.g. pelletizing or briquetting without the aid of extraneous binders
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a preparation method of a derived fuel of scrap automobile crushing residues, belonging to the technical field of resource utilization of automobile crushing residues; the method comprises the following steps: proportioning and mixing: adding a polymer modifier for enhancing component compatibility, calcium oxide for absorbing chloride and sulfide and coal for stabilizing combustion to the obtained crushed residue particles, and mixing the mixture sufficiently, wherein the ratio of the combustible particles, the polymer modifier, the calcium oxide and the coal in parts by weight in the mixture is as follows: crushing the residue particles: 40-60, polymer modifier: 10-20, calcium oxide: 15-25, coal: 10-20; and (3) compression molding: and putting the mixture into a cavity of a mold, applying pressure to the mold, pressurizing to 20-80 MPa, keeping the maximum pressure for 1-5 min, and demolding to obtain the derivative fuel with a regular shape. The invention can make the automobile broken residue into derived fuel and reduce pollution.
Description
Technical Field
The invention relates to the technical field of resource utilization of automobile broken residues, in particular to a preparation method of a derived fuel of a scraped automobile broken residue.
Background
Generally, after a scraped car is disassembled and parts are recovered, the rest part is compressed, crushed and sorted to recover metal and non-metal materials, and the rest part which is difficult to recover and is finely crushed is called as car crushing Residue (ASR). With the rapid development of the automobile market in China, the number of scrapped automobiles increases year by year, so that the resource and environmental problems caused by the broken residues of the scrapped automobiles are increasingly prominent. According to statistics, the quantity of automobile scrapped in China is about 700 thousands of automobiles per year, and 1200 thousands of automobiles are predicted to be scrapped in 2025, and the ASR generated at that time exceeds 300 ten thousand tons (the average weight of each automobile is 1000kg, and the ASR accounts for about 25 percent of the total weight of the scrapped automobiles), which forms a serious challenge for environmental management and pollution control. The current ASR disposal methods mainly comprise: landfill method, incineration method, gasification method and chemical solvent treatment method. These methods have some effectiveness in ASR processing, but also have disadvantages. For example, although the landfill method is low in cost and simple in operation, the ASR contains a large amount of harmful heavy metals, chlorobiphenyls (PCBs), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE) and other environmental load substances, and may pollute soil and groundwater; the incineration method can generate toxic substances such as dioxin, hydrogen chloride and the like, and the incineration residues contain heavy metals; the gasification method needs higher temperature, larger energy consumption and poor economic benefit; the chemical solvent treatment method only recovers specific substances and is not suitable for ASR recovery with complex components. Therefore, how to realize the harmless, quantitative reduction and resource treatment of the ASR becomes an important scientific and practical proposition which needs to be solved urgently in current research.
The existing automobile crushing residues are difficult to effectively treat, and the random disposal of the automobile crushing residues can cause great damage to the ecological environment.
Disclosure of Invention
In view of the above, there is a need for a method for preparing a fuel derived from scrap car scrap, which can solve the problem that the scrap car scrap cannot be effectively treated.
The invention provides a preparation method of a derived fuel of scrap automobile broken residues, which comprises the following steps:
drying and water controlling: conveying the automobile crushing residue into an oven for drying, and controlling the water content to be between 5 and 25 percent;
crushing and grinding: inputting the automobile crushing residue into a grinder for crushing and grinding to obtain fine particles with uniform particle size;
proportioning and mixing: adding a polymer modifier for enhancing component compatibility, calcium oxide for absorbing chloride and sulfide, and coal for stabilizing combustion to the obtained automobile crushing residue particles, and mixing the mixture sufficiently, wherein the ratio of the parts by weight of the automobile crushing residue particles, the polymer modifier, the calcium oxide, and the coal in the mixture is as follows:
automobile crushing residue particles: 40 to 60
Polymer modifier: 10 to 20
Calcium oxide: 15 to 25
Coal: 10-20;
and (3) compression molding: and putting the mixture into a cavity of a mold, applying pressure to the mold to 20-80 MPa, keeping the maximum pressure for 1-5 min, and demolding to obtain the composite refuse derived fuel with a regular shape.
Further, the polymer modifier is one or any combination of high-density polyethylene, low-density polyethylene, linear low-density polyethylene, homo-polypropylene, co-polypropylene, ethylene-propylene-diene copolymer and ethylene-octene copolymer.
Further, the drying temperature in the oven is 100-120 ℃, and the drying time is 20-70 min.
Further, in the crushing and grinding stage, firstly, the automobile crushing residue is subjected to coarse grinding to obtain particles with the particle size of 1mm-5mm, and then the crushing residue is subjected to fine grinding to obtain particles with the particle size of 0.5mm-1 mm.
And further, a vibration screening stage is arranged between the crushing and grinding stage and the proportioning and mixing stage, the obtained automobile crushing residue particles are screened by using a vibration screening instrument, and incombustible tiles, pottery clay and glass in the particles are screened out to obtain combustible plastics, rubber, fibers or foam.
Furthermore, the diameter of the mesh of the screen is 0.1mm-0.4mm, and the vibration screening instrument utilizes the screen to carry out screening for many times.
Further, the derived fuel is cylindrical, the diameter is 10mm-30mm, and the height is 40mm-100 mm.
Further, in the proportioning and mixing stage, the feeding mass ratio of the automobile crushing residue particles, the polymer modifier, the calcium oxide and the coal is 10:3:4: 3.
Further, dust generated in the whole preparation process of the derivative fuel is collected through a dust collecting device and is conveyed to a die for forced feeding.
Further, the automobile scrap residue is the residue obtained from scrap passenger cars, scrap passenger cars or scrap trucks after disassembly, compression, crushing, sorting and recycling of steel and nonferrous materials, including plastics, rubbers, paints, synthetic fibers, foams, phenolic fiberglass composites, epoxy fiberglass composites, metal particles, wood chips, cloth, and chips or powders of glass and sand.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention relates to a preparation method of a derived fuel of scrap automobile broken residues, which is characterized in that the automobile broken residues are prepared into the derived fuel, and the mixture of the automobile broken residues is treated in a combustion mode, so that the pollution to the environment is reduced, and the combustion heat energy is provided. The method has the advantages that the scraped car disassembly industry really becomes the environment-friendly industry of resource recycling, the industry chain of manufacturing, using and recycling of cars forms closed circulation, the pollution problem of scraped car disassembly residues is solved, the utilization rate and the added value of disassembly materials are improved, and social benefits and economic benefits are very obvious.
(2) The invention relates to a preparation method of a derived fuel of scrap automobile broken residues, which adds a polymer modifier for enhancing component compatibility, calcium oxide for absorbing chloride and sulfide and coal for stable combustion, and adopts specific proportion to mix the components to prepare the derived fuel. The calcium oxide absorbs the sulfide and chloride which may be produced, reducing pollution. The coal content improves the thermal stability of the derived fuel and increases the calorific value.
(3) According to the preparation method of the derived fuel of the scrap automobile broken residues, the automobile broken residues are dried and flammable, the viscosity among all components is reduced, and the automobile broken residues are conveniently broken and sorted.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a flowchart illustrating the steps of the present invention as a whole;
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the invention and together with the description, serve to explain the principles of the invention and not to limit the scope of the invention.
Referring to fig. 1, a method for preparing a fuel derived from crushed scrap of a scraped car in this embodiment includes the following steps:
collecting the residual part obtained by disassembling, compressing, crushing, sorting and recycling steel and nonferrous materials of a scrapped passenger car, a scrapped passenger car or a scrapped truck, wherein the residual part comprises plastics, rubber, paint, synthetic fibers, foam materials, phenolic resin glass fiber composite materials, epoxy resin glass fiber composite materials, metal particles, sawdust, cloth and fragments or powder of glass and silt.
Manual sorting: the worker sorts the machine sorted automobile scrap on a conveyor belt to remove iron, copper or aluminum which may be mixed in the automobile scrap. After the automobile broken residues are sorted by a machine, impurities such as iron, copper or aluminum are generally removed, but some missed metal wires or metal blocks may remain. In addition, during material handling, foreign metals may re-enter the automobile scrap. Before preparing the derived fuel, the derived fuel is firstly manually sorted, and the final step of sorting is carried out to remove possible mixed metals in the automobile crushing residues. During the incineration of the derived fuel, the metal can catalyze certain components in the combustion product to generate high-concentration dioxin-like derived compounds, and severe damage is caused to the environment.
Drying and water controlling: inputting the manually sorted automobile crushing residues into an industrial oven, wherein the drying temperature of the industrial oven is 100-120 ℃, the drying time is 20-70 min, and the water content of the automobile crushing residues is controlled to be 5-25%. The water content of the automobile broken residue is reduced, so that the automobile broken residue is more flammable. The viscosity among all the components is reduced, and the automobile crushing residue is conveniently crushed and sorted.
Vibration screening: and inputting the dried automobile crushing residue into a cutting type grinder for coarse crushing to obtain a crushed coarse material, and crushing the automobile crushing residue into particles with the particle size of 1mm-5 mm. Then the coarse material particles are input into a jaw crusher for fine crushing, and the automobile crushing residues are crushed into particles with the particle size of 0.5mm-1 mm. The contact surface area of the granular automobile crushing residues with the outside is larger, combustible materials are easier to burn, and meanwhile, the granules with basically consistent particle sizes can be conveniently screened and separated by the vibration screening instrument.
Vibration screening: inputting the obtained automobile crushed residue particles into a vibration screening instrument, wherein a screen with the mesh diameter of 0.1mm-0.4mm is adopted in the vibration screening instrument, and the automobile crushed residue particles are screened for multiple times, wherein the screened objects are incombustibles such as tiles, pottery clay and glass, and the obtained screened objects are raw material components for preparing derivative fuels and are combustible materials such as plastics, rubber, fibers or foam cotton. The incombustibles in the automobile broken residue particles are removed, so that the heat value of the automobile broken residue particles with the same mass can be increased, and the treatment efficiency of the automobile broken residue mixture is improved.
Proportioning and mixing: to the resulting automobile crash residue particles are added a polymer modifier for enhancing compatibility of components, calcium oxide for absorbing chloride and sulfide, and coal for stabilizing combustion, and the mixture is well mixed. The automobile broken residue particles are particles with the particle size of 0.5mm-1mm, the calcium oxide and the coal are generally powdery, the calcium oxide and the coal do not have viscosity, the calcium oxide and the coal are difficult to combine, and the polymer modifier is one or any combination of high-density polyethylene, low-density polyethylene, linear low-density polyethylene, homo-polypropylene, co-polypropylene, ethylene propylene diene copolymer and ethylene octene copolymer. The polymer modifier can improve the compatibility among the automobile crushing residue particles, calcium oxide and coal, so that the components can be mutually bonded and molded into a fixed body under the action of the polymer modifier. In the specific implementation process, the weight parts of the automobile crushing residue particles, the polymer modifier, the calcium oxide and the coal in the mixture are as follows:
automobile crushing residue particles: 40 to 60
Polymer modifier: 10 to 20
Calcium oxide: 15 to 25
Coal: 10-20;
within this range, the automobile crash residue particles are handled in a large amount, and the compatibility of the respective components is high, and molding is easy. The coal can improve the thermal stability of the derived fuel, avoid fragmentation in the combustion process and also can improve the calorific value of the derived fuel. The calcium oxide can remove sulfides and chlorides in the derived fuel to a certain extent, and the pollution is reduced.
The following are specifically mentioned: the lower the mass proportion of the automobile crushing residue particles in the derived fuel, the higher the combustion efficiency and the less pollutants are generated, but the treatment efficiency of the automobile crushing residue particles is reduced. Similarly, the higher the mass fraction of polymer modifier, the higher the compatibility between the components and the higher the chlorides produced. In addition, the higher the mass fraction of calcium oxide, the less sulfide and chloride are produced, but the higher the cost, the lower the calorific value of the derived fuel. Finally, the higher the mass fraction of coal, the higher the calorific value of the derived fuel, the less the consumption of the particles of automobile shredder residue, while generating more sulphidic pollutants. By considering various factors, and through tests and calculation, the best comprehensive performance can be obtained when the mass ratio of the automobile crushing residue particles, the polymer modifier, the calcium oxide and the coal is 10:3:4: 3.
And (3) compression molding: and (3) putting the mixture after proportioning and mixing into a cavity of a die, applying pretightening force to the material through a screw rod of an electronic universal tester, so that the mixture is subjected to the pressure of 20-80 MPa, and demoulding after the maximum pressure is kept for 1-5 min to prepare the derivative fuel with a regular shape. Specifically, the prepared derived fuel is a cylinder with the diameter of 10mm-30mm and the height of 40mm-100 mm.
Because each component of the derived fuel is fine particles or powder, a large amount of combustible dust is generated in the preparation process of the derived fuel, and the dust floats in the air, so that explosion is easily caused, and great potential safety hazard is brought to industrial production. The floating combustible dust is collected by arranging dust collecting equipment in each step of the preparation of the derivative fuel, and then the dust is conveyed to a mould for forced feeding. The utilization rate of the fuel is improved, and the probability of safety accidents is reduced.
And carrying out a furnace combustion experiment on the obtained derivative fuel to explore the pollutant emission condition in the combustion process of the derivative fuel. 10g to 100g of derived fuel is placed in an air-blast drying oven, the set temperature is 100 ℃ to 120 ℃, and the drying time is 2h to 4 h. And (3) putting the dried sample into a combustion furnace for burning for 6-12 h, and collecting slag generated after the burning process. And (3) adopting an EDX-700 analyzer to analyze chemical elements such as chlorine, calcium, sulfur and the like of the refuse derived fuel before and after combustion. When the charged mass ratio of the crushed residue particles, the polymer modifier, calcium oxide and coal was 10:3:4:3, the mass ratio of chlorine, calcium and sulfur before unburned was 0.36%, 17.51% and 0.24%. The mass ratio of chlorine, calcium and sulfur in the slag after combustion is 0.18%, 17.50% and 0.12%. The slag with the components has little difference with other slag in the combustion boiler, and can be uniformly and intensively treated.
The derived fuel prepared by the invention has physicochemical property and combustion performance meeting the requirement of alternative fuel, can be used for cooperatively treating solid wastes with a coal-fired circulating fluidized bed thermal power plant, a cement kiln and a circulating fluidized bed garbage incinerator power plant, and has the characteristics of low raw material cost, simple process, high-efficiency cleaning, high heat value and the like.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the present invention.
Claims (10)
1. A preparation method of a derived fuel of scrap car crushing residues is characterized by comprising the following steps:
drying and water controlling: conveying the automobile crushing residue into an oven for drying, and controlling the water content to be between 5 and 25 percent;
crushing and grinding: inputting the automobile crushing residue into a grinder for crushing and grinding to obtain fine particles with uniform particle size;
proportioning and mixing: adding a polymer modifier for enhancing component compatibility, calcium oxide for absorbing chloride and sulfide, and coal for stabilizing combustion to the obtained automobile crushing residue particles, and mixing the mixture sufficiently, wherein the ratio of the parts by weight of the automobile crushing residue particles, the polymer modifier, the calcium oxide, and the coal in the mixture is as follows:
automobile crushing residue particles: 40 to 60
Polymer modifier: 10 to 20
Calcium oxide: 15 to 25
Coal: 10-20;
and (3) compression molding: and putting the mixture into a cavity of a mold, applying pressure to the mold, pressurizing to 20-80 MPa, keeping the maximum pressure for 1-5 min, and demolding to obtain the derivative fuel with a regular shape.
2. The method for preparing the fuel derived from crushed scrap car residues according to claim 1, wherein the polymer modifier is one or any combination of high density polyethylene, low density polyethylene, linear low density polyethylene, homo polypropylene, co-polypropylene, ethylene propylene diene copolymer and ethylene octene copolymer.
3. The method for preparing the fuel derived from the crushed scrap car residues according to claim 1, wherein the drying temperature in the drying oven is 100-120 ℃, and the drying time is 20-70 min.
4. The method for preparing the fuel derived from crushed automobile residues according to claim 1, wherein in the crushing and grinding stage, the crushed automobile residues are firstly subjected to coarse grinding to obtain particles with the particle size of 1mm-5mm, and then the crushed automobile residues are subjected to fine grinding to obtain particles with the particle size of 0.5mm-1 mm.
5. The method for preparing the fuel derived from crushed automobile residues according to claim 1, wherein a vibration screening stage is arranged between the crushing and grinding stage and the proportioning and mixing stage, the obtained crushed automobile residue particles are screened by a vibration screening instrument, and incombustible tiles, clay and glass in the particles are screened out to obtain combustible plastics, rubber, fibers or foam.
6. The method for preparing the fuel derived from crushed scrap car residues according to claim 5, wherein the mesh diameter of the screen is 0.1mm-0.4mm, and the vibratory screening machine performs multiple screening by using the screen.
7. The method for preparing the derived fuel of the crushed residues of the scraped cars according to claim 1, wherein the derived fuel is cylindrical, the diameter of the derived fuel is 10mm-30mm, and the height of the derived fuel is 40mm-100 mm.
8. The method for preparing the fuel derived from the crushed automobile residues as claimed in claim 1, wherein the mass ratio of the crushed automobile residues, the polymer modifier, the calcium oxide and the coal is 10:3:4:3 in the proportioning mixing stage.
9. The method for preparing the derived fuel of the crushed residues of the scraped car as claimed in claim 1, wherein the dust generated in the whole process of preparing the derived fuel is collected by a dust collecting device and is conveyed to the die for forced feeding.
10. The method for preparing fuel derived from scrap car shredder residue according to any one of claims 1 to 9, wherein the scrap car shredder residue is the remainder of scrap cars, scrap passenger cars or scrap trucks after disassembly, compaction, shredding, sorting and recycling of steel and nonferrous materials, including plastics, rubbers, paints, synthetic fibers, foams, phenolic fiberglass composites, epoxy fiberglass composites, metal particles, wood chips, cloth, and chips or powders of glass and sand.
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| CN202111518372.XA CN114196456A (en) | 2021-12-13 | 2021-12-13 | Preparation method of derived fuel of scrap car crushing residue |
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| CN202111518372.XA CN114196456A (en) | 2021-12-13 | 2021-12-13 | Preparation method of derived fuel of scrap car crushing residue |
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| CN106350092A (en) * | 2016-10-10 | 2017-01-25 | 格林美（武汉）城市矿产循环产业园开发有限公司 | Method for catalyzing and thermally cracking automobile waste tires at low temperature into gas and oil |
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| US20060280669A1 (en) * | 2005-06-10 | 2006-12-14 | Jones Fred L | Waste conversion process |
| CN103343027A (en) * | 2013-07-03 | 2013-10-09 | 湖南万容科技股份有限公司 | Manufacturing equipment and method of fuel bar |
| TW201515727A (en) * | 2013-10-17 | 2015-05-01 | Univ Nat Kaohsiung 1St Univ Sc | Manufacturing method of solid refuse derived fuel for automobile shredder residue |
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