CN1103874A - Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene - Google Patents
Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene Download PDFInfo
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- CN1103874A CN1103874A CN93115420A CN93115420A CN1103874A CN 1103874 A CN1103874 A CN 1103874A CN 93115420 A CN93115420 A CN 93115420A CN 93115420 A CN93115420 A CN 93115420A CN 1103874 A CN1103874 A CN 1103874A
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- 239000002699 waste material Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims description 26
- 239000004793 Polystyrene Substances 0.000 title claims description 19
- 229920002223 polystyrene Polymers 0.000 title claims description 18
- 230000001172 regenerating effect Effects 0.000 title claims description 3
- 239000006260 foam Substances 0.000 title description 10
- 239000002904 solvent Substances 0.000 claims abstract description 21
- 238000009835 boiling Methods 0.000 claims abstract description 11
- 239000012046 mixed solvent Substances 0.000 claims abstract description 11
- 239000011324 bead Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 18
- 239000004033 plastic Substances 0.000 claims description 13
- 229920003023 plastic Polymers 0.000 claims description 13
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000008188 pellet Substances 0.000 claims description 10
- 238000001879 gelation Methods 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 6
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 6
- KVNYFPKFSJIPBJ-UHFFFAOYSA-N 1,2-diethylbenzene Chemical compound CCC1=CC=CC=C1CC KVNYFPKFSJIPBJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004604 Blowing Agent Substances 0.000 claims description 4
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003063 flame retardant Substances 0.000 claims description 4
- -1 halogenated aryl hydrocarbon Chemical class 0.000 claims description 4
- 229920006327 polystyrene foam Polymers 0.000 claims description 4
- 229920006248 expandable polystyrene Polymers 0.000 claims description 3
- 239000003350 kerosene Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 2
- 239000002283 diesel fuel Substances 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000003502 gasoline Substances 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 238000005453 pelletization Methods 0.000 claims 2
- 239000003086 colorant Substances 0.000 claims 1
- 239000007854 depigmenting agent Substances 0.000 claims 1
- 229940117389 dichlorobenzene Drugs 0.000 claims 1
- 230000002087 whitening effect Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 abstract description 2
- 239000004088 foaming agent Substances 0.000 abstract 1
- 239000008187 granular material Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 239000011259 mixed solution Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000006261 foam material Substances 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 235000012054 meals Nutrition 0.000 description 2
- 238000007909 melt granulation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000206 moulding compound Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- DEIGXXQKDWULML-UHFFFAOYSA-N 1,2,5,6,9,10-hexabromocyclododecane Chemical compound BrC1CCC(Br)C(Br)CCC(Br)C(Br)CCC1Br DEIGXXQKDWULML-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical class N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- CMQUQOHNANGDOR-UHFFFAOYSA-N 2,3-dibromo-4-(2,4-dibromo-5-hydroxyphenyl)phenol Chemical compound BrC1=C(Br)C(O)=CC=C1C1=CC(O)=C(Br)C=C1Br CMQUQOHNANGDOR-UHFFFAOYSA-N 0.000 description 1
- BSWWXRFVMJHFBN-UHFFFAOYSA-N 2,4,6-tribromophenol Chemical compound OC1=C(Br)C=C(Br)C=C1Br BSWWXRFVMJHFBN-UHFFFAOYSA-N 0.000 description 1
- AZLJSZBHSPLYTL-UHFFFAOYSA-N Br[Cl](Br)(Br)(Br)Br Chemical compound Br[Cl](Br)(Br)(Br)Br AZLJSZBHSPLYTL-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical class CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000001045 blue dye Substances 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007046 ethoxylation reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229940095674 pellet product Drugs 0.000 description 1
- SVHOVVJFOWGYJO-UHFFFAOYSA-N pentabromophenol Chemical compound OC1=C(Br)C(Br)=C(Br)C(Br)=C1Br SVHOVVJFOWGYJO-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 235000011888 snacks Nutrition 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical class [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 235000019731 tricalcium phosphate Nutrition 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
High boiling point (higher than 100 deg.C) mixed solvent is added to PSF waste for gelatinized defoaming, which is then extruded from air-exhausting screw extruder for prilling, while the solvent is recovered. After the obtd. granules are crushed and screened, they are placed in an autoclave, and liquid foaming agent is added so as to form EPS beads through spheroidization. This invention can defoam the waste on site to save transportation of dispersed wastes. The produced EPS beads may be used as sandwiched core board, float, thermal insulation and packaging according to their quality grades.
Description
The invention provides a kind of employing gelling technique deaeration and reclaim polystyrene foamed plastics (PSF) waste, the Appropriate technology of regenerated foamable polystyrene (EPS) bead.
Human when entering the plastics epoch, be faced with the new problem of administering the plastic refuse contaminate environment again.Current global annual plastic refuse total amount is in 1,000,000 tons, if the PSF waste accounts for half by volume.About 2,000,000 tons of PSF world yearly capacity, wherein West Europe accounts for half.Aggregate consumption in 1992 is 1,480,000 tons, and the U.S. accounts for 1/3.The discarded amount of global PSF was above 500,000 tons in 1980.China only televisor packaging PSF waste peak period just once reached 1.5 ten thousand tons/year; Inshore fishery is also very considerable with the waste product and the scrap stock quantity of damaged renewal of buoy and porous plastics factory, and railway the convenient mess tin along the line and snack bar also can be found everywhere in addition.These light specific gravities, volume is big, the rot PSF porous plastics that absorbs of easy firing and be difficult in earth, the severe contamination that accumulates over a long period human living environment, is known as " white pollution " abroad.How to administer " white pollution " and become the task of top priority, cause the concern of brainstrust, disclosed a series of research papers and patent (plastics industry, 1991, (2) in recent years; 13).
Existing PSF reclamation of waste materials technology can be summarized as follows:
1. directly burn and utilize heat energy;
2. carbonization decomposition reclaims solvent and styrene monomer;
3. make soil improvement material after the mechanical disintegration, underdrain and manage filtering material and toy casting resin on every side;
4. light heat-insulating material, sound-proof material or seepy material are made with cement mixing in the broken back of mechanical glass;
5. make waterproof paint or binding agent after the dissolving;
6. thermoplastic is processed into moulding compound or modification moulding compound;
7. EPS regenerates.
EPS is the original article form of PSF, and 2.5 ten thousand tons/year of China's existing production capacities need about 100,000 tons of a large amount of imports throughout the year, and therefore reclaiming PSF waste material preparation, regeneration EPS is to solve to be badly in need of, and reduces import, rationally utilizes the preferred approach of useless PSF.The existing feasible patented method of external the mid-1960s for example, utilizes useless PSF to replace 30～50% vinylbenzene, is dissolved in and carries out suspension polymerization in the vinylbenzene, makes EPS(BP1021250 by single stage method).Maybe will give up adds whipping agent with water compositing dispersion medium after the deaeration of PSF hot melt, Mechanical Crushing, the thermoplastic granulation in autoclave, by two step method system EPS(BP988, and 289; BP988,290).Before during the molten material deaeration of method the vinylbenzene loss through volatilization serious, and be difficult to get rid of in the reclaimed materials impurity to the influence of polyreaction; Two step method hot melt deaeration plant efficiency is low, and hot oxygen cracking is serious, the product color depth; Regeneration EPS method (CN91108317) the deaerating agent boiling point that the contriver proposes in earlier stage is low, and consumption is bigger than normal, and is dangerous, and pellet is air-dry time-consuming, is unsuitable for scale operation; The method of the Chen Huai of Wuhan University nine grades exploitations (plastics industry 1991, (2): 13), be that the PSF softening and breaking is become bead, add behind the whipping agent directly molded.This method plant efficiency is low, only suitable little tonnage production.The utilization that above method all only solves the PSF waste material emphatically, and problems such as the collection of unresolved dispersion waste material, transportation, and the spatiotemporal efficiency of equipment is also lower.
The object of the present invention is to provide a kind of more economical rationality, be convenient to the method for in situ recovery polystyrene foamed plastics waste and then regenerated foamable polystyrene.
For overcoming the deficiencies in the prior art, technical scheme of the present invention is: the polystyrene foam waste material is filled in the high boiling point gelation mixed solvent, can rapid deaeration be become the gel material; It is passed through the exhaust screw extrusion press, when reclaiming mixed solvent, it is (if raw materials used purer that the thermoplastic granulation obtains the polystyrene pellet, the moldable system transparent polystyrene of gained pellet product), pellet adds dispersion agent, foam stabilizer, liquid blowing agent and other auxiliary agents with water compositing dispersion medium according to a conventional method again through coarse crushing, screening in autoclave, stirring is warming up to 130～140 ℃ and makes that pellet is softening to be become coccoidly, and infiltrates whipping agent.Cooling discharge then, drip washing, drain regenerated foamable polystyrene pearl pellet.This kind EPS pellet is pre-frothing and forming process according to a conventional method.
The mixed solvent that is used for the gelation of polystyrene foam waste material is made up of the good solvent of polystyrene (PS) and the non-solvent of PS, and the boiling point of mixed solvent is higher than 100 ℃.The good solvent that the present invention suits has: aromatic hydrocarbons such as toluene, dimethylbenzene, diethylbenzene, C10 aromartic wet goods; Halogenated aryl hydrocarbon such as chlorobenzene, orthodichlorobenzene etc.; Ester class such as N-BUTYL ACETATE, amyl acetate-n etc. and tar solvent oil or the like.
Suitable non-solvent comprises alkanes such as the petroleum cuts more than the C8, all kinds of SOLVENTS gasoline, kerosene, diesel oil etc. and alcohols such as Virahol, propyl carbinol, amylalcohol etc.
The content of good solvent is 10～80%(volume in the gelation mixed solvent), with 30～60%(volume) for well.
The service temperature that solvent is reclaimed in the granulation of gel material thermoplastic is 150～300 ℃, and working pressure is 101.3KPa～1KPa.
The liquid blowing agent that regeneration EPS uses is the alkane of C3～C6 or the halogenated alkane of boiling point lower (＜60 ℃), and consumption is a 3-15%(weight).
Require also can to add other auxiliary agent according to difference, as add a small amount of blue dye or pigment, add an amount of fluorescent bleaches increasing whiteness, or add the tinting material mark with the Huang that disappears.Also can add fire retardant and make fire-retardant kind.Fire retardant commonly used has pentabromo--chlorine hexanaphthene, hexabromocyclododecane and other brominated flame-retardant such as tribromophenol, and tetrabromo-bisphenol, pentabromophenol, decabromodiphynly oxides etc. can add antimonous oxide, aluminium hydroxide, magnesium hydroxide etc. in addition.Consumption is general＜35%(weight).
Polystyrene foam material proportion is very little, its bulk specific weight is usually between 0.01～0.02, and that the heap of its waste material is cut density is also half as large, one truck can only be adorned more than 200 kilogram at most, and the distribution region of waste is very wide, a difficult problem that therefore concentrate, transport, a large amount of recovery has become the recycling of foam dead meal.Method of the present invention can make volume-diminished arrive 1/50～100 of former stores on the spot with foam dead meal froth breaking, has fundamentally solved the collection of foam waste and the difficulty of transportation; This method has also been avoided the thermal-oxidative degradation of hot melt deaeration, and the product look of recovery is shallow.
The present invention adopts the high boiling point mixed solvent to handle useless foam material, and solvent evaporates is few, and consumption is little, and gained gel group was both tack-free, and also non-stick container is handled convenient, safety.Solvent can reclaim through the vented screw forcing machine, and reuses, and is both economical.
The polystyrene gel material that reclaims with this method can add various auxiliary agents and the mixing of easily kneading easily with the regenerated foamed plastic product.This legal system regeneration EPS is not strict especially to the requirement of reclaiming the waste material quality, can be wider utilize waste material.Expandable Polystyrene (EPS) by the present invention makes can make the foam article of different purposes, as make sandwich board, buoy, buoyant apparatus, insulation, lagging material or wrapping material etc. according to the difference that reclaims the waste material quality.The earth material that also can make freezer that bulk specific weight is bigger.
Embodiment one
Contain dimethylbenzene 30%(V/V) dimethylbenzene～kerosene mixed solution, when 10 ℃ of temperature, can make the PSF gel deaeration that blows slowly; As xylene content 10%(V/V in the mixed solution) time, also can make the PSF gelation deaeration that blows slowly under 45 ℃.
Embodiment two
Take by weighing the 10gPSF waste material, fill in 25ml dimethylbenzene～white oil equal-volume mixed solution, can be under 10 ℃ inner gel deaeration in 2 minutes, squeeze out unnecessary liquid material after the gained gel roll into a ball heavy 15.4 grams, rarer soft, dry-basis moisture content is 54%.
Embodiment three
The PSF waste material of cleaning is filled in gelation deaeration rapidly in the mixed solvent of recovery.Gained gel material is through steam discharge formula twin screw extruder, decompression, heating granulation (180 ℃ of feed ends, 101.3KPa; 280 ℃ of discharge ends 1KPa) get transparent good and look shallow pellet.
Embodiment four
Used PSF waste material can not contain a large amount of greasy dirts (for example not removing the smeary convenient mess tin).It is filled in the light mixed solvent of recovery, and gelation deaeration gained gel material group sends into steam discharge formula twin screw extruder, decompression granulation (180 ℃ of feed ends, 101.3KPa; 280 ℃ of discharge ends 1.33KPa) reclaim solvent simultaneously.The gained pellet sieves through shearing plastic crusher coarse crushing.
In autoclave, add 100 parts in water, 3 parts of tricalcium phosphates, 1 part in sodium-chlor, 0.02 part of sodium laurylsulfonate, 0.01 part of staybelite, the ethoxylation tallow alcohol stirs for 0.05 part, adds 150 parts in above-mentioned screening material again, 6.4 parts of pentanes.Airtight heated and stirred made temperature rise to 130-140 ℃ in 4 hours, constant temperature 2 hours; In 2 hours, be cooled to below 40 ℃ then.Discharging, drip washing, drain regeneration EPS bead material.The foam plastic product that makes of EPS thus, bulk specific weight about 0.02.
Claims (9)
1, a kind of method with polystyrene foamed plastics castoff regenerative system Expandable Polystyrene (EPS), it is characterized in that: the deaeration in high boiling point gelation mixed solvent of polystyrene foam waste material becomes gel group, through vented screw forcing machine extruding pelletization, reclaim solvent simultaneously, pellet through coarse crushing, screening, in autoclave, infiltrate whipping agent and nodularization becomes bead material.
2,, it is characterized in that high boiling point gelation mixed solvent is higher than 100 ℃ polystyrene good solvent and polystyrene non-solvent by boiling point and is mixed in proportion and forms according to the described method of claim 1.
3, according to the described method of claim 2, it is characterized in that used good solvent comprises aromatic hydrocarbons such as toluene, dimethylbenzene, diethylbenzene, C10 aromartic oil, halogenated aryl hydrocarbon such as chlorobenzene, neighbour-dichlorobenzene, ester class such as N-BUTYL ACETATE, amyl acetate-n and tar solvent oil, or the high boiling solvent of other energy dissolved polystyrene.
4,, it is characterized in that non-solvent comprises, the petroleum cuts of alkanes such as C8-C16, all kinds of SOLVENTS gasoline, kerosene, diesel oil, alcohols such as Virahol, propyl carbinol or amylalcohol according to the described method of claim 2.
5, according to the described method of claim 1, the service temperature that it is characterized in that the exhaust screw extrusion press is 150～300 ℃, and working pressure is 101.3KPa～1KPa.
6,, it is characterized in that used liquid blowing agent is the alkane of C3～C6 or the halogenated alkane of lower boiling (＜60 ℃) according to the described method of claim 1.
7, according to the described method of claim 6, it is characterized in that the liquid blowing agent consumption is for reclaiming the 3-15%(weight of polystyrene consumption).
8, in accordance with the method for claim 1, it is characterized in that the gel material of collecting added fire retardant, depigmenting agent, whitening agent or mark colorant in advance before extruding pelletization.
9, according to the described method of claim 1, the temperature that it is characterized in that the pellet nodularization is 130～140 ℃, or higher.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93115420A CN1103874A (en) | 1993-12-17 | 1993-12-17 | Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene |
| AU69934/94A AU6993494A (en) | 1993-06-24 | 1994-06-24 | Processes for recycling waste polystyrene foam |
| JP50229895A JPH09503235A (en) | 1993-06-24 | 1994-06-24 | Method of collecting and utilizing polystyrene foam plastic waste |
| PCT/CN1994/000051 WO1995000582A1 (en) | 1993-06-24 | 1994-06-24 | Processes for recycling waste polystyrene foam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93115420A CN1103874A (en) | 1993-12-17 | 1993-12-17 | Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1103874A true CN1103874A (en) | 1995-06-21 |
Family
ID=4991044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93115420A Pending CN1103874A (en) | 1993-06-24 | 1993-12-17 | Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1103874A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085225C (en) * | 1997-12-26 | 2002-05-22 | 中国轻工总会塑料加工应用研究所 | Foamed polystyrene waste recovering method and equipment |
| CN100404610C (en) * | 2006-08-24 | 2008-07-23 | 姚野 | Production method of polystyrene waste foam regeneration foaming |
| CN100569476C (en) * | 2005-02-21 | 2009-12-16 | 苏尔泽化学技术有限公司 | Preparation method of expandable polystyrene microspheres |
| CN101367956B (en) * | 2008-10-13 | 2011-02-02 | 吉林大学 | Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent |
| CN103692576A (en) * | 2013-04-03 | 2014-04-02 | 北京国兴五佳高分子纤维再生科技有限公司 | Method and system for recovering PTFE (Polytetrafluoroethylene) fibers and PPS (Polyphenylene Sulfide) in waste dust removing bag |
| CN103343354B (en) * | 2013-06-17 | 2017-05-31 | 张家界乾丰高科技术开发有限责任公司 | A kind of polystyrene（PS）Strength rust remover |
| CN108623928A (en) * | 2017-03-21 | 2018-10-09 | 洛阳尖端技术研究院 | A kind of suction wave foam and preparation method thereof |
| CN108976626A (en) * | 2018-06-20 | 2018-12-11 | 四川塑金科技有限公司 | A kind of regeneration fire protection flame retarding plastics |
| CN110551320A (en) * | 2019-10-21 | 2019-12-10 | 高庆武 | Solvent for recovering and dissolving expanded polystyrene and recovering and dissolving method |
| CN113372606A (en) * | 2021-06-17 | 2021-09-10 | 宋渊 | Process for preparing expandable polystyrene beads by polystyrene feed back solvent method |
| CN114851433A (en) * | 2022-04-26 | 2022-08-05 | 四川绵阳兴合益新材料科技有限公司 | Suspension polymerization expandable polystyrene solid waste separation and recovery method |
-
1993
- 1993-12-17 CN CN93115420A patent/CN1103874A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085225C (en) * | 1997-12-26 | 2002-05-22 | 中国轻工总会塑料加工应用研究所 | Foamed polystyrene waste recovering method and equipment |
| CN100569476C (en) * | 2005-02-21 | 2009-12-16 | 苏尔泽化学技术有限公司 | Preparation method of expandable polystyrene microspheres |
| CN100404610C (en) * | 2006-08-24 | 2008-07-23 | 姚野 | Production method of polystyrene waste foam regeneration foaming |
| CN101367956B (en) * | 2008-10-13 | 2011-02-02 | 吉林大学 | Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent |
| CN103692576A (en) * | 2013-04-03 | 2014-04-02 | 北京国兴五佳高分子纤维再生科技有限公司 | Method and system for recovering PTFE (Polytetrafluoroethylene) fibers and PPS (Polyphenylene Sulfide) in waste dust removing bag |
| CN103692576B (en) * | 2013-04-03 | 2016-05-18 | 北京国兴五佳高分子纤维再生科技有限公司 | Reclaim method and the system thereof of PTFE fiber and PPS in waste and old dust settling pocket |
| CN103343354B (en) * | 2013-06-17 | 2017-05-31 | 张家界乾丰高科技术开发有限责任公司 | A kind of polystyrene（PS）Strength rust remover |
| CN108623928A (en) * | 2017-03-21 | 2018-10-09 | 洛阳尖端技术研究院 | A kind of suction wave foam and preparation method thereof |
| CN108976626A (en) * | 2018-06-20 | 2018-12-11 | 四川塑金科技有限公司 | A kind of regeneration fire protection flame retarding plastics |
| CN110551320A (en) * | 2019-10-21 | 2019-12-10 | 高庆武 | Solvent for recovering and dissolving expanded polystyrene and recovering and dissolving method |
| CN113372606A (en) * | 2021-06-17 | 2021-09-10 | 宋渊 | Process for preparing expandable polystyrene beads by polystyrene feed back solvent method |
| CN114851433A (en) * | 2022-04-26 | 2022-08-05 | 四川绵阳兴合益新材料科技有限公司 | Suspension polymerization expandable polystyrene solid waste separation and recovery method |
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