CN101367956B - Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent - Google Patents
Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent Download PDFInfo
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- CN101367956B CN101367956B CN2008100512610A CN200810051261A CN101367956B CN 101367956 B CN101367956 B CN 101367956B CN 2008100512610 A CN2008100512610 A CN 2008100512610A CN 200810051261 A CN200810051261 A CN 200810051261A CN 101367956 B CN101367956 B CN 101367956B
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- Prior art keywords
- reducing agent
- methyl ester
- volume reducing
- polystyrene
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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
Abstract
The invention discloses a method for reclaiming polystyrene foam plastics with the product of methyl esterification of vegetable grease used as volume reducing agent. The method comprises the following steps: the product of methyl esterification of vegetable grease is provided, the polysterene foam plastics is crushed, the polysterene foam plastics is dissolved, the polystyrene precipitation is separated, and the filtrate is processed; all the volume reducing agent and precipitator (0<#> diesel oil) are used to prepare compound biological diesel oil. The technical process is simple, the service efficiency of the volume reducing agent is above 98 percent; the energy consumption during the technical process is little, the reaction condition is mild, the recovery rate of polystyrene is above97 percent; the raw materials are rich, and secondary pollution is avoided with innocuity.
Description
Technical field:
The invention belongs to the environmental protection and energy saving field, be specifically related to make the method that volume reducing agent reclaims polystyrene foamed plastics with the vegetable fat methyl ester product.
Technical background:
As its name suggests, volume reducing agent is meant the solvent that the solid substance volume is reduced.At present the polystyrene foamed plastics volume reducing agent that uses mainly contains two kinds of natural constituents and petrochemical industry components: (1) the Du Xiang volatile oil component and the limonene of purifying from orange peel volatile oil; (2) dimethylbenzene of organic class, chlorobenzene, alkane and ester class thereof.
In above volume reducing agent, natural product Du Xiang volatile oil component and from orange peel volatile oil, extract limonene, obvious with its defoaming effect, and nontoxic, be easy to reclaim and be subjected to pay attention to (Guo Xueyi, ZL200510032267.X, 2007).This type of volume reducing agent is a natural extract, and raw material sources are less, and preparation cost is higher, and vacuum filtration, the underpressure distillation repeatedly of volume reducing agent recovery needs, and this is higher to subtract Rongcheng, has limited and has promoted the use of; And dimethylbenzene, chlorobenzene, alkane and the ester class thereof of the machine of use class are made volume reducing agent, and because of its toxicity is stronger, boiling point is lower, subtracts the appearance process and has potential safety hazard and less use (Lu Tingfeng, CN101153090A, 2008)
Summary of the invention:
Purpose of the present invention just provides that a kind of raw material sources are abundant, technology is simple, with low cost, subtract and hold outstanding effect and make the method that volume reducing agent reclaims polystyrene foamed plastics with the vegetable fat methyl ester product.
The fatty acid molecule of Vegetable oil lipoprotein is by C
14-C
18Carbochain is formed, and its esterification product overwhelming majority is by Uniphat A60 (C
16:0), methyl stearate (C
18:0), Witconol 2301 (C
18:1), methyl linoleate (C
18:2) and Linolenic acid methylester (C
18:3) waiting composition, these esterification products can the dissolved polystyrene porous plastics.Volume reducing agent of the present invention can be prepared through esterification by the various plants grease.For example soya-bean oil, rapeseed oil, plam oil, Semen Maydis oil, Rice pollard oil, peanut wet goods, it is identical that their esterification product subtracts the function of holding polystyrene foamed plastics as volume reducing agent, and waste edible oil fat is refining through handling, and the esterification product also has identical functions.
Carbonatoms in these vegetable fat methyl ester products and the petrifaction diesel molecule is close, physicochemical property and use properties and petrifaction diesel are close, it can use separately or with the petrifaction diesel mediation of any ratio, and the most frequently used composite biodiesel B20 is in harmonious proportion by 20% biofuel and 80% petrifaction diesel to form.At the petrifaction diesel worsening shortages, under the situation of Nonrenewable resources exploitation crisis, the research and development of composite biodiesel are significant.(Xu Ge, biofuel and 0
#Diesel oil mediation performance study, Jiangsu Polytechnic University's journal, 2003).
The preparation of vegetable fat methyl ester product is a known technology, and the triglyceride level in the Vegetable oil lipoprotein makes with methyl alcohol generation transesterification reaction in the presence of catalyzer, and its by product is a glycerine.
Get a certain amount of NaOH, be added in the methyl alcohol, stirring and dissolving is made sodium hydroxide-methanol solution; Acid value is heated to 60 ℃ less than 1.5mgKOH/g, moisture less than 0.1% Vegetable oil lipoprotein, adds the methanol solution for preparing in advance, stir, pick up counting; Behind the reaction 30min, gas chromatographic analysis is carried out in sampling, after rate to be transformed reaches 98%, with static 8 hours of mixed solution, gets supernatant liquor, is neutralized to neutrality with the vitriol oil, adds the less water washing, after the underpressure distillation product.Through gas chromatographic analysis, its component is: Uniphat A60 (C
16:0), methyl stearate (C
18:0), Witconol 2301, methyl linoleate (C
18:2), Linolenic acid methylester (C
18:3) etc., fatty acid methyl ester reaches more than 98%, and these fatty acid methyl esters are main components of biofuel.And waste edible oil fat is through behind centrifugal removal of impurities → normal hexane extracting → distillation → purifying waste edible oil fat (acid value 1.5mgKOH/g), by prepare the esterification product with quadrat method.
The present invention with the vegetable fat methyl ester product as volume reducing agent, realize polystyrene foamed plastics subtract hold reclaim after, volume reducing agent and precipitation agent (0
#Diesel oil) all be used to prepare composite biodiesel.In subtracting the appearance process, polystyrene foamed plastics proportion is less, and volume is bigger, and it floats on the volume reducing agent surface, and the consumption that increases volume reducing agent can increase the contact area of the two, improves and subtracts the volume flow rate degree.Equally, the increase system temperature also can improve and subtract the volume flow rate degree.
Provided by the inventionly make the method that volume reducing agent reclaims polystyrene foamed plastics with the vegetable fat methyl ester product and carry out according to the following steps:
(1). the vegetable fat methyl ester of making volume reducing agent product is provided;
(2). fragmentation: polystyrene foamed plastics is broken into diameter less than the 2cm particle;
(3). dissolving: press polystyrene foamed plastics: volume reducing agent=1: 2～6 (w/w), and in 15～60 ℃ of scopes, select constant solvent temperature, treat to dissolve fully, leave standstill to solution clarification after-filtration, reject leaches thing;
(4). precipitate and separate: in filtrate, add and volume reducing agent isopyknic 0
#Diesel oil (density 0.83g/cm
3), vibration, white depositions appears in solution, leaves standstill 5 minutes after-filtration, and leaching thing is polystyrene;
(5). filtrate is handled: filtrate is filtered through G4 glass sand core funnel again, and its component is the diesel oil solution that is dissolved with volume reducing agent, and fatty acid methyl ester in gas chromatographic detection filtrate continues to add 0 of an amount of volume
#Diesel oil makes that the fatty acid methyl ester mass percent is 20% in the system, stirs evenly, and promptly gets the composite biodiesel of B20.
The polystyrene performance relatively before and after table one reclaimed
| Performance | The standard level polystyrene | Reclaim the back polystyrene |
| Dimension card is heat-resisting/℃ | 80～87 | 86 |
| Dry back weight loss/% | 0.1～0.2 | 0.1 |
| Tensile strength/MPa | >60.0 | 62.0 |
| Flexural strength/MPa | 85.0～90.0 | 87.1 |
| Shock strength | 20 | 20 |
Technological process of the present invention is simple, particularly volume reducing agent needn't with precipitation agent 0
#Diesel oil separates, but, be prepared into composite biodiesel therewith directly as the main body composition of composite biodiesel, avoided the complicated technology that volume reducing agent reclaims in the background technology, avoided because of volume reducing agent reclaims the loss that brings, the service efficiency of volume reducing agent is up to more than 98%; The technological process energy consumption is little, and the reaction conditions gentleness subtracts the appearance process as long as heating even must not heated slightly.Polystyrene rate of recovery height reaches more than 97%; Polystyrene performance after the recovery and standard performance be (seeing Table one) quite, can be used as polystyrene raw material and use; The raw materials used source of the present invention is abundant, and safety non-toxic can not produce secondary pollution.
Embodiment:
Embodiment one
The soybean oil methyl ester product is provided;
Polystyrene foamed plastics 10.0g (density 0.02g/cm
3) be ground into the particle of diameter less than 2cm, join and fill 25mL soybean oil methyl ester product (density 0.88g/cm
3) beaker in, 15 ℃ of constant temperature are treated to dissolve fully, leave standstill to solution clarification after-filtration, reject leaches thing.Add 0 of 25mL in the filtrate
#Diesel oil, vibration, a large amount of white depositions appears in solution, leaves standstill after 5 minutes throw out is leached weighing mensuration, reclaims back polystyrene density 0.80g/cm
3, the rate of recovery 98.5%, the polystyrene after the recovery reaches standard performance.Filtrate is filtered with G4 glass sand core funnel, and its filtrate being is dissolved with the diesel oil solution of volume reducing agent, and through gas chromatographic detection, fatty acid methyl ester is 49.6%; In filtrate, add 76.23mL0
#Diesel oil stirs evenly, and obtains the B20 composite biodiesel.
Embodiment two:
The rapeseed methylester product is provided;
With polystyrene foamed plastics 10.0g (density 0.02g/cm
3) be ground into the particle of diameter less than 2cm, join and fill the 40mL rapeseed methylester
Product (density 0.88g/cm
3) beaker in, 25 ℃ of constant temperature are treated to dissolve fully, leave standstill to solution clarification after-filtration, reject leaches thing.In filtrate, add 0 of 40mL
#Diesel oil, vibration, a large amount of white depositions appears in solution, leaves standstill after 5 minutes throw out is leached weighing mensuration, reclaims back polystyrene density 0.80g/cm
3, the rate of recovery 98.5%, the polystyrene after the recovery reaches standard performance.Filtrate is filtered with G4 glass sand core funnel, and through gas chromatographic detection, fatty acid methyl ester is 49.3%; In filtrate, add 120.73mL0
#Diesel oil stirs evenly, and obtains the B20 composite biodiesel.
Embodiment three
Plam oil esterification product is provided;
Polystyrene foamed plastics 10.0g (density 0.02g/cm
3) be ground into the particle of diameter less than 2cm, join and fill 50mL plam oil esterification product (density 0.87g/cm
3) beaker in, 40 ℃ of constant temperature are treated to dissolve fully, leave standstill to solution clarification after-filtration, reject leaches thing.In filtrate, add 0 of 50mL
#Diesel oil, vibration, a large amount of white depositions appears in solution, leaves standstill after 5 minutes throw out is leached weighing mensuration, reclaims back polystyrene density 0.79g/cm
3, subtracting and hold the rate of recovery 98.0%, the polystyrene after the recovery reaches standard performance.Filtrate is filtered with G4 glass sand core funnel, and through gas chromatographic detection, fatty acid methyl ester is 49.2%, adds 150.40mL0 in filtrate
#Diesel oil stirs evenly, and obtains the B20 composite biodiesel.
Embodiment four:
Semen Maydis oil esterification product is provided:
Polystyrene foamed plastics 10.0g (density 0.02g/cm
3) be ground into the particle of diameter less than 2cm, join and fill 60mL Semen Maydis oil esterification product (density 0.88g/cm
3) beaker in, 50 ℃ of constant temperature are treated to dissolve fully, leave standstill to solution clarification after-filtration, reject leaches thing.In filtrate, add 0 of 60mL
#Diesel oil, vibration, a large amount of white depositions appears in solution, leaves standstill after 5 minutes throw out is leached weighing mensuration, reclaims back polystyrene density 0.82g/cm
3, the rate of recovery 98.6%, the polystyrene after the recovery reaches standard performance.Filtrate is filtered with G4 glass sand core funnel, and through gas chromatographic detection, fatty acid methyl ester is 49.5%; In filtrate, add 182.33mL0
#Diesel oil stirs evenly, and obtains the B20 composite biodiesel.
Embodiment five:
Esterification product behind the waste edible oil fat purifying is provided;
Polystyrene foamed plastics 10.0g (density 0.02g/cm
3) be ground into the particle of diameter less than 2cm, join esterification product (the density 0.88g/cm that fills behind the 50mL waste edible oil fat purifying
3) beaker in, 60 ℃ of constant temperature are treated to dissolve fully, leave standstill to solution clarification after-filtration, reject leaches thing.In filtrate, add 0 of 50mL
#Diesel oil, vibration, a large amount of white depositions appears in solution, leaves standstill after 5 minutes throw out is leached weighing mensuration, reclaims back polystyrene density 0.80g/cm
3, subtract and hold the rate of recovery 97.5%.Polystyrene after the recovery reaches standard performance.Filtrate is filtered with G4 glass sand core funnel, and through gas chromatographic detection, fatty acid methyl ester is 49.1%; In filtrate, add 149.88mL0
#Diesel oil stirs evenly, and obtains the B20 composite biodiesel.
Claims (2)
1. make the method that volume reducing agent reclaims polystyrene foamed plastics with the vegetable fat methyl ester product for one kind, it is characterized in that carrying out according to the following steps:
(1). the vegetable fat methyl ester of making volume reducing agent product is provided;
(2). fragmentation: polystyrene foamed plastics is broken into diameter less than the 2cm particle;
(3). dissolving: press polystyrene foamed plastics: volume reducing agent=1: 2～6 (w/w), and in 15～60 ℃ of scopes, select constant solvent temperature, treat to dissolve fully, leave standstill to solution clarification after-filtration, reject leaches thing;
(4). precipitate and separate: in filtrate, add and volume reducing agent isopyknic 0
#Diesel oil, vibration, white depositions appears in solution, leaves standstill 5 minutes after-filtration, and leaching thing is polystyrene;
(5). filtrate is handled: filtrate is filtered through G4 glass sand core funnel again, and its component is the diesel oil solution that is dissolved with volume reducing agent, through the gas chromatographic detection fatty acid methyl ester, continues to add 0 of an amount of volume
#Diesel oil makes that the fatty acid methyl ester mass percent is 20% in the system, stirs evenly, and promptly gets the composite biodiesel of B20.
2. according to the method for claim 1, it is characterized in that the vegetable fat methyl ester product in the step (1) is the esterification product of edible vegetable oil and fat and the esterification product behind the discarded edible vegetable oil and fat process purifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100512610A CN101367956B (en) | 2008-10-13 | 2008-10-13 | Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100512610A CN101367956B (en) | 2008-10-13 | 2008-10-13 | Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent |
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| Publication Number | Publication Date |
|---|---|
| CN101367956A CN101367956A (en) | 2009-02-18 |
| CN101367956B true CN101367956B (en) | 2011-02-02 |
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|---|---|---|---|
| CN2008100512610A Expired - Fee Related CN101367956B (en) | 2008-10-13 | 2008-10-13 | Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent |
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Families Citing this family (6)
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|---|---|---|---|---|
| CN114773665A (en) | 2014-10-03 | 2022-07-22 | 波利斯太沃特公司 | Processing method for recycling polystyrene waste |
| WO2018195997A1 (en) * | 2017-04-28 | 2018-11-01 | 陈颂华 | Polystyrene foam densification recycling apparatus and method of operation thereof |
| JP7221980B2 (en) | 2017-11-20 | 2023-02-14 | ポリスタイバート インコーポレイテッド | Process for recycling polystyrene waste |
| EP3870640A4 (en) | 2018-10-26 | 2022-08-03 | Polystyvert Inc. | Processes for recycling polystyrene waste and/or polystyrene copolymer waste |
| CN110412152B (en) * | 2019-06-25 | 2022-10-28 | 北京海新能源科技股份有限公司 | Composition analysis method for waste animal and vegetable oil hydrogenation product |
| CN111234307B (en) * | 2020-03-18 | 2022-07-01 | 井冈山大学 | Dissolving agent for polystyrene waste and preparation method and application thereof |
Citations (5)
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| CN1103874A (en) * | 1993-12-17 | 1995-06-21 | 化学工业部成都有机硅应用研究技术服务中心 | Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene |
| CN1228719A (en) * | 1996-08-29 | 1999-09-15 | F&P分类技术有限公司 | Process for separating low density plastic fraction |
| US6337413B1 (en) * | 2000-09-25 | 2002-01-08 | Shubhen Kapila | Fatty acid esters to dissolve polystyrene for production of commodity material useful for production of polymers |
| WO2003035729A2 (en) * | 2001-10-24 | 2003-05-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Recycling of waste expanded polystyrene foams to give products which may be re-expanded |
| CN1861728A (en) * | 2005-05-10 | 2006-11-15 | 姜左荣 | Composition for transparent bond |
-
2008
- 2008-10-13 CN CN2008100512610A patent/CN101367956B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103874A (en) * | 1993-12-17 | 1995-06-21 | 化学工业部成都有机硅应用研究技术服务中心 | Recovering waste foam polystyrene by gel foam remoing method and regenerating foamable polystyrene |
| CN1228719A (en) * | 1996-08-29 | 1999-09-15 | F&P分类技术有限公司 | Process for separating low density plastic fraction |
| US6337413B1 (en) * | 2000-09-25 | 2002-01-08 | Shubhen Kapila | Fatty acid esters to dissolve polystyrene for production of commodity material useful for production of polymers |
| WO2003035729A2 (en) * | 2001-10-24 | 2003-05-01 | Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. | Recycling of waste expanded polystyrene foams to give products which may be re-expanded |
| CN1861728A (en) * | 2005-05-10 | 2006-11-15 | 姜左荣 | Composition for transparent bond |
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