CN105771901B - The method for preparing sorbing material using plastics or waste plastic charing - Google Patents
The method for preparing sorbing material using plastics or waste plastic charing Download PDFInfo
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- CN105771901B CN105771901B CN201610363150.8A CN201610363150A CN105771901B CN 105771901 B CN105771901 B CN 105771901B CN 201610363150 A CN201610363150 A CN 201610363150A CN 105771901 B CN105771901 B CN 105771901B
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- plastics
- sorbing material
- charing
- catalyst
- polymer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4893—Residues derived from used synthetic products, e.g. rubber from used tyres
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of methods for preparing sorbing material using plastics or waste plastic charing, are prepared as follows：(1), it by polymer organic solvent stirring and dissolving, adds in catalyst after having dissolved and is uniformly mixed, the catalyst is lewis acid, and the polymer is plastics or waste plastic containing itrile group；(2), it is distilled to recover organic solvent and obtains precursors；(3), it by the precursors of step (2) under nitrogen protection, is warming up to 500 700 DEG C to be carbonized, taking out cleaning, drying after having carbonized obtains product.The present invention carbonizes plastics or waste plastic under the conditions of certain thermal decomposition, and target product is solid product, is used for feed separation and purification process, non-secondary pollution as sorbing material, yield can reach 12 20wt.%.
Description
Technical field
The present invention relates to a kind of methods for preparing sorbing material using plastics or waste plastic charing, belong to high molecular material
Field.
Background technology
With the continuous development of industry, waste and old plastics, the amount such as ABS, PAN or SAN are more and more.Recycling to them
Using being particularly important.
The chemical recovery method of waste plastic such as ABS mainly has degrading solvent, thermocatalytic degradation, the degradation of light heat oxygen at present
With it is overcritical degradation etc., mainly thermocatalytic edman degradation Edman is used to obtain liquid product at present.Common catalyst for cracking is divided into non-
It is homogeneously (solid acid, Metal Supported carbon, zeolite) and homogeneous.ABS thermocatalytic edman degradation Edmans prepare liquid product there are nitric efficiency it is low,
The problems such as complex process, catalyst easy in inactivation, while liquid product is obtained, has ignored the property of solid product, brings
The secondary pollution of residue.
Invention content
In order to solve the above-mentioned technical problem, the purpose of the present invention is to provide a kind of environmentally friendly utilizations for avoiding secondary pollution
The method that plastics or waste plastic charing prepare sorbing material.
To achieve these goals, the technical scheme is that：It is a kind of to prepare and inhale using plastics or waste plastic charing
The method of enclosure material, it is characterised in that：It is prepared as follows：
(1), it by polymer organic solvent stirring and dissolving, adds in catalyst after having dissolved and is uniformly mixed, it is described to urge
Agent is lewis acid, and the polymer is plastics or waste plastic containing itrile group；
(2), it is distilled to recover organic solvent and obtains precursors；
(3), it by the precursors of step (2) under nitrogen protection, is warming up to 500-700 DEG C and is carbonized, carbonized
Cleaning, drying is taken out afterwards obtains product.
In said program：The mass ratio of the plastics or waste plastic and catalyst is 6-12:1.
In said program：The polymer is ABS or at least one of PAN or SAN.
In said program：The organic solvent is THF or DMSO or Isosorbide-5-Nitrae-dioxane.These solvents can dissolve us
Plastics or waste plastic.
In said program：The lewis acid is zinc chloride, frerrous chloride, cobalt chloride, aluminium chloride, boron trifluoride, five
Niobium chloride.
Preferably：The lewis acid is zinc chloride, frerrous chloride, cobalt chloride.
In said program in step (2), distillation distillation is such as rotated using vacuum distillation.Distillation efficiency higher.
Advantageous effect：The present invention carbonizes plastics or waste plastic under the conditions of certain thermal decomposition, and target product is solid-state
Product is used for feed separation and purification process, non-secondary pollution as sorbing material, and yield can reach 12-20wt.%.
Specific embodiment
With reference to embodiment, the invention will be further described：
Embodiment 1：
By polymer waste plastic ABS stirring and dissolvings in solvents tetrahydrofurane, catalyst chlorination is added in after dissolving completely
Zinc is uniformly mixed, and the proportioning of polymer and catalyst is 9:1.Above compound after mixing, rotary evaporation recycling design four
Hydrogen furans obtains precursors.
Presoma is placed in quartz ampoule, under nitrogen protection, is warming up to 700 DEG C of progress carbonization reactions.By reaction product
It is filtered after washing with water, carbonizing production is obtained after filter residue drying, carbonizing production yield is 15.4wt.%.
Embodiment 2：
By polymer waste plastic SAN, stirring and dissolving, dissolving add in catalyst afterwards completely in solvent Isosorbide-5-Nitrae-dioxane
Cobalt chloride is uniformly mixed, and the proportioning of polymer and catalyst is 12:1.Above compound after mixing, in Rotary Evaporators
Recycling design Isosorbide-5-Nitrae-dioxane obtains precursors.
Presoma is placed in quartz ampoule, 600 DEG C is warming up in a nitrogen environment and is carbonized.Reaction product water is clear
It is filtered after washing, carbonizing production is obtained after filter residue drying, carbonizing production yield is 12.8wt.%.
Embodiment 3：
By polymer waste plastic ABS stirring and dissolvings in solvents tetrahydrofurane, catalyst chlorination is added in after dissolving completely
Cobalt is uniformly mixed, and the proportioning of polymer and catalyst is 6:1.Above compound after mixing, recycles in Rotary Evaporators
Solvents tetrahydrofurane obtains precursors.
Presoma is placed in quartz ampoule, 500 DEG C is warming up in a nitrogen environment and is carbonized.Reaction product water is clear
It is filtered after washing, carbonizing production is obtained after filter residue drying, carbonizing production yield is 12.1wt.%.
Embodiment 4：
By polymer waste plastic PAN stirring and dissolvings in solvents tetrahydrofurane, catalyst chlorination is added in after dissolving completely
Ferrous iron is uniformly mixed, and the proportioning of polymer and catalyst is 8:1.Above compound after mixing, is returned in Rotary Evaporators
Solvents tetrahydrofurane is received, obtains precursors.
Presoma is placed in quartz ampoule, 650 DEG C is warming up in a nitrogen environment and is carbonized.Reaction product water is clear
It is filtered after washing, carbonizing production is obtained after filter residue drying, carbonizing production yield is 13.4wt.%.
Embodiment 5
By polymer waste plastic ABS stirring and dissolvings in solvents tetrahydrofurane, catalyst chlorination is added in after dissolving completely
Cobalt is uniformly mixed, and the proportioning of polymer and catalyst is 9:1.Above compound after mixing, rotary evaporation recycling design four
Hydrogen furans obtains precursors.
Presoma is placed in quartz ampoule, under nitrogen protection, is warming up to 700 DEG C of progress carbonization reactions.By reaction product
It is filtered after washing with water, carbonizing production is obtained after filter residue drying, carbonizing production yield is 13.5wt.%.
Embodiment 6：
Polymer ABS is directly mixed with catalyst zinc chloride, the proportioning of polymer and catalyst is 9:1.Above-mentioned chemical combination
Object, which is uniformly mixed, to be placed in quartz ampoule, is warming up to 700 DEG C in a nitrogen environment and is carbonized, after reaction product is washed with water
It filters, carbonizing production is obtained after filter residue drying, carbonizing production yield is 4.8wt.%.
Embodiment 7：
Polymer ABS powder is directly mixed with catalyst cobalt chloride, the proportioning of polymer and catalyst is 9:1.It is above-mentioned
Compound, which is uniformly mixed, to be placed in quartz ampoule, is warming up to 700 DEG C in a nitrogen environment and is carbonized, and reaction product water is clear
It is filtered after washing, carbonizing production is obtained after filter residue drying, carbonizing production yield is 1.17wt.%.
Embodiment 8：
Polymer ABS powder is placed in quartz ampoule, 700 DEG C is warming up in a nitrogen environment and is carbonized, reaction is produced
Object filters after washing with water, and carbonizing production is obtained after filter residue drying, and carbonizing production yield is 1.89wt.%.
Can be seen that ABS from embodiment 1 and 5-8, directly to carbonize yield relatively low, mainly due to benzene second in ABS
The presence of alkene unit, in thermal degradation, it can prevent the cyclisation of propylene cyanogen, cause carbonizing production less.
In order to improve the charring rate of ABS, we introduce catalyst lewis acid, oxidative dehydrogenation can promote polymer into
Charcoal, it is the key that one step of charing to improve reactant closeness of contact and control oxidation process.Transition metal halide Lewis acid,
It can promote various polymer into charcoal, for the polymer containing phenyl ring, Lewis acid types transition metal halide or effective friendship
Join catalyst.But it have been found that after ABS and lewis acid are simply mixed, being carbonized, carbonization yield improves unobvious,
The yield that even might as well directly carbonize.
Using many experiments, after we introduce organic solvent dissolving, precursor is made, then carbonizes again, yield obtains
Apparent raising, achieves unexpected effect.The mechanism of reaction is：Waste plastic containing cyano, as on ABS and nitrile
H is released on the C that base is connected, free radical macromolecular backbone is formed, carbonizing production is formed after free radical recombination crosslinking.
The present invention is not limited to above-mentioned specific embodiment, it should be understood that those of ordinary skill in the art are without creative
Labour, which according to the present invention can conceive, makes many modifications and variations.In short, all technician in the art are according to this
The design of invention passes through the available technical side of logical analysis, reasoning, or a limited experiment on the basis of existing technology
Case, all should be in the protection domain being defined in the patent claims.
Claims (5)
- A kind of 1. method that sorbing material is prepared using plastics charing, it is characterised in that：It is prepared as follows：(1), it by polymer organic solvent stirring and dissolving, adds in catalyst after having dissolved and is uniformly mixed, the catalyst For lewis acid, the polymer is the plastics containing itrile group, and the mass ratio of plastics and catalyst is 6-12:1, it is described organic molten Agent is THF or DMSO or Isosorbide-5-Nitrae-dioxane；(2), it is distilled to recover organic solvent and obtains precursors；(3), it by the precursors of step (2) under nitrogen protection, is warming up to 500-700 DEG C and is carbonized, taken after having carbonized Go out cleaning, drying obtains product.
- 2. the method for sorbing material is prepared using plastics charing according to claim 1, it is characterised in that：The polymer is ABS or at least one of PAN or SAN.
- 3. the method according to claim 1 or claim 2 that sorbing material is prepared using plastics charing, it is characterised in that：The Louis This acid is zinc chloride, one kind in frerrous chloride, cobalt chloride, aluminium chloride, boron trifluoride, columbium pentachloride.
- 4. the method for sorbing material is prepared using plastics charing according to claim 3, it is characterised in that：The lewis acid For zinc chloride, frerrous chloride, cobalt chloride.
- 5. the method for sorbing material is prepared using plastics charing according to claim 3, it is characterised in that：In step (2), steam It evaporates using vacuum distillation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610363150.8A CN105771901B (en) | 2016-05-27 | 2016-05-27 | The method for preparing sorbing material using plastics or waste plastic charing |
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| CN201610363150.8A CN105771901B (en) | 2016-05-27 | 2016-05-27 | The method for preparing sorbing material using plastics or waste plastic charing |
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| CN105771901B true CN105771901B (en) | 2018-06-12 |
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| CN116272874B (en) * | 2023-05-06 | 2024-09-06 | 昆明理工大学 | Plastic carbon material based on waste plastic recycling and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368306A (en) * | 2014-08-19 | 2015-02-25 | 上海玉垒环境生物技术有限公司 | Preparation method of biochar-like matter used for heavy metal contaminated soil repair |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104368306A (en) * | 2014-08-19 | 2015-02-25 | 上海玉垒环境生物技术有限公司 | Preparation method of biochar-like matter used for heavy metal contaminated soil repair |
Non-Patent Citations (1)
| Title |
|---|
| Catalyzing carbonization function of ferric chloride based on acrylonitrilee butadiene styrene copolymer/organophilic montmorillonite nanocomposites;Yibing Cai et al.;《Polymer degradation and stability》;20070124;第92卷;第490-496页 * |
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