CN103304840A - Method for preparing polystyrene granules from waste polystyrene foam by using solvent method - Google Patents
Method for preparing polystyrene granules from waste polystyrene foam by using solvent method Download PDFInfo
- Publication number
- CN103304840A CN103304840A CN2013102789258A CN201310278925A CN103304840A CN 103304840 A CN103304840 A CN 103304840A CN 2013102789258 A CN2013102789258 A CN 2013102789258A CN 201310278925 A CN201310278925 A CN 201310278925A CN 103304840 A CN103304840 A CN 103304840A
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- CN
- China
- Prior art keywords
- polystyrene foam
- waste polystyrene
- toluene
- granules
- waste
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention relates to a method for preparing polystyrene granules from waste polystyrene foam by using a solvent method. The method comprises the main process flows of: dissolving the waste polystyrene foam into toluene so as to obtain viscous liquid; and transferring the viscous liquid into a stainless steel disc, putting the stainless steel disc in a vacuum baking oven, depressurizing by using a water circulating pump, recovering the toluene through condensation, cutting the obtained flaky substances into strips, cutting the cut strip-shaped substances into granules, and packaging the granules, thereby obtaining the products. The method disclosed by the invention is used for preparing the polystyrene granules, the cost is very low, and a large number of waste polystyrene foam generated by cities can be recovered effectively, so that resources are utilized reasonably, and the pollution caused by wastes is reduced.
Description
Technical field
The present invention relates to a kind of method with waste polystyrene foam preparation granules of polystyrene, this preparation method is dissolved in the waste polystyrene foam in the toluene, is cut into grain again after reclaiming toluene, slitting, just obtains the method for granules of polystyrene material.
Background technology
The present invention is primarily aimed at the serious public hazards that the waste polystyrene foam causes and does not rationally utilize, and existing recovery method need be concentrated, and reclaims then, because the proportion of polystyrene foam is very little, therefore transportation cost is too high and can't efficient recovery, thereby has caused the serious environmental pollution.
The present invention utilizes waste polystyrene foam solubleness in toluene very big, it is dissolved in the toluene, so just significantly reduced the waste polystyrene volume of foam, obtain sheet polystyrene, be cut into grain again through behind the slitting through reclaim under reduced pressure toluene under the heating again, just obtain the granules of polystyrene material, its cheap cost recovery makes it have wide application prospect.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of solvent method with the method for waste polystyrene foam preparation granules of polystyrene, and this preparation method is that raw material just can obtain granules of polystyrene through simple technological process with the waste polystyrene foam.
The technical problem to be solved in the present invention is solved by following scheme: solvent method is with the method for waste polystyrene foam preparation granules of polystyrene, it is characterized in that: the waste polystyrene foam is joined in the toluene, obtain thick liquid, thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product, and wherein the mass ratio of toluene and waste polystyrene foam is: 1:0.2-0.4.
Above-mentioned solvent method refers to the waste polystyrene foam in the method for waste polystyrene foam preparation granules of polystyrene: the waste polystyrene foam that wrapping waste polystyrene foam and disposable lunch-box are used etc.
Advantage of the present invention is: it is lower 1, to prepare the cost of granules of polystyrene with present method.2, a large amount of waste polystyrene foams that can the efficient recovery city produce.3, alleviate the pollution that waste causes.
Description of drawings
Fig. 1. solvent method is with the process flow sheet of waste polystyrene foam preparation granules of polystyrene.
Embodiment
Embodiment 1: add 50g waste polystyrene foam in 250g toluene, obtain thick liquid.Thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product.
Embodiment 2: add 60g waste polystyrene foam in 250g toluene, obtain thick liquid.Thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product.
Embodiment 3: add 70g waste polystyrene foam in 250g toluene, obtain thick liquid.Thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product.
Embodiment 4: add 80g waste polystyrene foam in 250g toluene, obtain thick liquid.Thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product.
Embodiment 5: add 90g waste polystyrene foam in 250g toluene, obtain thick liquid.Thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product.
Embodiment 6: add 100g waste polystyrene foam in 250g toluene, obtain thick liquid.Thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product.
Claims (2)
1. solvent method is with the method for waste polystyrene foam preparation granules of polystyrene, it is characterized in that: the waste polystyrene foam is joined in the toluene, obtain thick liquid, thick liquid is transferred in the Stainless Steel Disc, Stainless Steel Disc is put into vacuum drying oven, 120
0Utilize the water-circulating pump decompression under the C, reclaim toluene through condensation, the flap that obtains is cut into strip, is cut into grain again, packing namely gets product, and wherein the mass ratio of toluene and waste polystyrene foam is: 1:0.2-0.4.
2. the waste polystyrene foam in the claim 1 refers to: the waste polystyrene foam that wrapping waste polystyrene foam and disposable lunch-box are used etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102789258A CN103304840A (en) | 2013-07-04 | 2013-07-04 | Method for preparing polystyrene granules from waste polystyrene foam by using solvent method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102789258A CN103304840A (en) | 2013-07-04 | 2013-07-04 | Method for preparing polystyrene granules from waste polystyrene foam by using solvent method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103304840A true CN103304840A (en) | 2013-09-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102789258A Pending CN103304840A (en) | 2013-07-04 | 2013-07-04 | Method for preparing polystyrene granules from waste polystyrene foam by using solvent method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103304840A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307150A (en) * | 2008-07-10 | 2008-11-19 | 昆明理工大学 | Novel method for recovering waste and old polystyrol |
| CN101701073A (en) * | 2009-11-05 | 2010-05-05 | 吉林大学 | Method for functionally remolding waste polystyrene |
-
2013
- 2013-07-04 CN CN2013102789258A patent/CN103304840A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101307150A (en) * | 2008-07-10 | 2008-11-19 | 昆明理工大学 | Novel method for recovering waste and old polystyrol |
| CN101701073A (en) * | 2009-11-05 | 2010-05-05 | 吉林大学 | Method for functionally remolding waste polystyrene |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130918 |
|
| RJ01 | Rejection of invention patent application after publication |